Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 5260 insertions, 0 deletions

diff --git a/kernel/include/net/cfg80211.h b/kernel/include/net/cfg80211.h
new file mode 100644
index 000000000..f8d6813cd
--- /dev/null
+++ b/kernel/include/net/cfg80211.h
@@ -0,0 +1,5260 @@
+#ifndef __NET_CFG80211_H
+#define __NET_CFG80211_H
+/*
+ * 802.11 device and configuration interface
+ *
+ * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/debugfs.h>
+#include <linux/list.h>
+#include <linux/bug.h>
+#include <linux/netlink.h>
+#include <linux/skbuff.h>
+#include <linux/nl80211.h>
+#include <linux/if_ether.h>
+#include <linux/ieee80211.h>
+#include <linux/net.h>
+#include <net/regulatory.h>
+
+/**
+ * DOC: Introduction
+ *
+ * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges
+ * userspace and drivers, and offers some utility functionality associated
+ * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used
+ * by all modern wireless drivers in Linux, so that they offer a consistent
+ * API through nl80211. For backward compatibility, cfg80211 also offers
+ * wireless extensions to userspace, but hides them from drivers completely.
+ *
+ * Additionally, cfg80211 contains code to help enforce regulatory spectrum
+ * use restrictions.
+ */
+
+
+/**
+ * DOC: Device registration
+ *
+ * In order for a driver to use cfg80211, it must register the hardware device
+ * with cfg80211. This happens through a number of hardware capability structs
+ * described below.
+ *
+ * The fundamental structure for each device is the 'wiphy', of which each
+ * instance describes a physical wireless device connected to the system. Each
+ * such wiphy can have zero, one, or many virtual interfaces associated with
+ * it, which need to be identified as such by pointing the network interface's
+ * @ieee80211_ptr pointer to a &struct wireless_dev which further describes
+ * the wireless part of the interface, normally this struct is embedded in the
+ * network interface's private data area. Drivers can optionally allow creating
+ * or destroying virtual interfaces on the fly, but without at least one or the
+ * ability to create some the wireless device isn't useful.
+ *
+ * Each wiphy structure contains device capability information, and also has
+ * a pointer to the various operations the driver offers. The definitions and
+ * structures here describe these capabilities in detail.
+ */
+
+struct wiphy;
+
+/*
+ * wireless hardware capability structures
+ */
+
+/**
+ * enum ieee80211_band - supported frequency bands
+ *
+ * The bands are assigned this way because the supported
+ * bitrates differ in these bands.
+ *
+ * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
+ * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
+ * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz)
+ * @IEEE80211_NUM_BANDS: number of defined bands
+ */
+enum ieee80211_band {
+	IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
+	IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
+	IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ,
+
+	/* keep last */
+	IEEE80211_NUM_BANDS
+};
+
+/**
+ * enum ieee80211_channel_flags - channel flags
+ *
+ * Channel flags set by the regulatory control code.
+ *
+ * @IEEE80211_CHAN_DISABLED: This channel is disabled.
+ * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes
+ * 	sending probe requests or beaconing.
+ * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
+ * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
+ * 	is not permitted.
+ * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
+ * 	is not permitted.
+ * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
+ * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
+ *	this flag indicates that an 80 MHz channel cannot use this
+ *	channel as the control or any of the secondary channels.
+ *	This may be due to the driver or due to regulatory bandwidth
+ *	restrictions.
+ * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
+ *	this flag indicates that an 160 MHz channel cannot use this
+ *	channel as the control or any of the secondary channels.
+ *	This may be due to the driver or due to regulatory bandwidth
+ *	restrictions.
+ * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
+ * @IEEE80211_CHAN_GO_CONCURRENT: see %NL80211_FREQUENCY_ATTR_GO_CONCURRENT
+ * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted
+ *	on this channel.
+ * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
+ *	on this channel.
+ *
+ */
+enum ieee80211_channel_flags {
+	IEEE80211_CHAN_DISABLED		= 1<<0,
+	IEEE80211_CHAN_NO_IR		= 1<<1,
+	/* hole at 1<<2 */
+	IEEE80211_CHAN_RADAR		= 1<<3,
+	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
+	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
+	IEEE80211_CHAN_NO_OFDM		= 1<<6,
+	IEEE80211_CHAN_NO_80MHZ		= 1<<7,
+	IEEE80211_CHAN_NO_160MHZ	= 1<<8,
+	IEEE80211_CHAN_INDOOR_ONLY	= 1<<9,
+	IEEE80211_CHAN_GO_CONCURRENT	= 1<<10,
+	IEEE80211_CHAN_NO_20MHZ		= 1<<11,
+	IEEE80211_CHAN_NO_10MHZ		= 1<<12,
+};
+
+#define IEEE80211_CHAN_NO_HT40 \
+	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
+
+#define IEEE80211_DFS_MIN_CAC_TIME_MS		60000
+#define IEEE80211_DFS_MIN_NOP_TIME_MS		(30 * 60 * 1000)
+
+/**
+ * struct ieee80211_channel - channel definition
+ *
+ * This structure describes a single channel for use
+ * with cfg80211.
+ *
+ * @center_freq: center frequency in MHz
+ * @hw_value: hardware-specific value for the channel
+ * @flags: channel flags from &enum ieee80211_channel_flags.
+ * @orig_flags: channel flags at registration time, used by regulatory
+ *	code to support devices with additional restrictions
+ * @band: band this channel belongs to.
+ * @max_antenna_gain: maximum antenna gain in dBi
+ * @max_power: maximum transmission power (in dBm)
+ * @max_reg_power: maximum regulatory transmission power (in dBm)
+ * @beacon_found: helper to regulatory code to indicate when a beacon
+ *	has been found on this channel. Use regulatory_hint_found_beacon()
+ *	to enable this, this is useful only on 5 GHz band.
+ * @orig_mag: internal use
+ * @orig_mpwr: internal use
+ * @dfs_state: current state of this channel. Only relevant if radar is required
+ *	on this channel.
+ * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered.
+ * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels.
+ */
+struct ieee80211_channel {
+	enum ieee80211_band band;
+	u16 center_freq;
+	u16 hw_value;
+	u32 flags;
+	int max_antenna_gain;
+	int max_power;
+	int max_reg_power;
+	bool beacon_found;
+	u32 orig_flags;
+	int orig_mag, orig_mpwr;
+	enum nl80211_dfs_state dfs_state;
+	unsigned long dfs_state_entered;
+	unsigned int dfs_cac_ms;
+};
+
+/**
+ * enum ieee80211_rate_flags - rate flags
+ *
+ * Hardware/specification flags for rates. These are structured
+ * in a way that allows using the same bitrate structure for
+ * different bands/PHY modes.
+ *
+ * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
+ *	preamble on this bitrate; only relevant in 2.4GHz band and
+ *	with CCK rates.
+ * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
+ *	when used with 802.11a (on the 5 GHz band); filled by the
+ *	core code when registering the wiphy.
+ * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
+ *	when used with 802.11b (on the 2.4 GHz band); filled by the
+ *	core code when registering the wiphy.
+ * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
+ *	when used with 802.11g (on the 2.4 GHz band); filled by the
+ *	core code when registering the wiphy.
+ * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
+ * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
+ * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode
+ */
+enum ieee80211_rate_flags {
+	IEEE80211_RATE_SHORT_PREAMBLE	= 1<<0,
+	IEEE80211_RATE_MANDATORY_A	= 1<<1,
+	IEEE80211_RATE_MANDATORY_B	= 1<<2,
+	IEEE80211_RATE_MANDATORY_G	= 1<<3,
+	IEEE80211_RATE_ERP_G		= 1<<4,
+	IEEE80211_RATE_SUPPORTS_5MHZ	= 1<<5,
+	IEEE80211_RATE_SUPPORTS_10MHZ	= 1<<6,
+};
+
+/**
+ * enum ieee80211_bss_type - BSS type filter
+ *
+ * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
+ * @IEEE80211_BSS_TYPE_PBSS: Personal BSS
+ * @IEEE80211_BSS_TYPE_IBSS: Independent BSS
+ * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
+ * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
+ */
+enum ieee80211_bss_type {
+	IEEE80211_BSS_TYPE_ESS,
+	IEEE80211_BSS_TYPE_PBSS,
+	IEEE80211_BSS_TYPE_IBSS,
+	IEEE80211_BSS_TYPE_MBSS,
+	IEEE80211_BSS_TYPE_ANY
+};
+
+/**
+ * enum ieee80211_privacy - BSS privacy filter
+ *
+ * @IEEE80211_PRIVACY_ON: privacy bit set
+ * @IEEE80211_PRIVACY_OFF: privacy bit clear
+ * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting
+ */
+enum ieee80211_privacy {
+	IEEE80211_PRIVACY_ON,
+	IEEE80211_PRIVACY_OFF,
+	IEEE80211_PRIVACY_ANY
+};
+
+#define IEEE80211_PRIVACY(x)	\
+	((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF)
+
+/**
+ * struct ieee80211_rate - bitrate definition
+ *
+ * This structure describes a bitrate that an 802.11 PHY can
+ * operate with. The two values @hw_value and @hw_value_short
+ * are only for driver use when pointers to this structure are
+ * passed around.
+ *
+ * @flags: rate-specific flags
+ * @bitrate: bitrate in units of 100 Kbps
+ * @hw_value: driver/hardware value for this rate
+ * @hw_value_short: driver/hardware value for this rate when
+ *	short preamble is used
+ */
+struct ieee80211_rate {
+	u32 flags;
+	u16 bitrate;
+	u16 hw_value, hw_value_short;
+};
+
+/**
+ * struct ieee80211_sta_ht_cap - STA's HT capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11n HT capabilities for an STA.
+ *
+ * @ht_supported: is HT supported by the STA
+ * @cap: HT capabilities map as described in 802.11n spec
+ * @ampdu_factor: Maximum A-MPDU length factor
+ * @ampdu_density: Minimum A-MPDU spacing
+ * @mcs: Supported MCS rates
+ */
+struct ieee80211_sta_ht_cap {
+	u16 cap; /* use IEEE80211_HT_CAP_ */
+	bool ht_supported;
+	u8 ampdu_factor;
+	u8 ampdu_density;
+	struct ieee80211_mcs_info mcs;
+};
+
+/**
+ * struct ieee80211_sta_vht_cap - STA's VHT capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11ac VHT capabilities for an STA.
+ *
+ * @vht_supported: is VHT supported by the STA
+ * @cap: VHT capabilities map as described in 802.11ac spec
+ * @vht_mcs: Supported VHT MCS rates
+ */
+struct ieee80211_sta_vht_cap {
+	bool vht_supported;
+	u32 cap; /* use IEEE80211_VHT_CAP_ */
+	struct ieee80211_vht_mcs_info vht_mcs;
+};
+
+/**
+ * struct ieee80211_supported_band - frequency band definition
+ *
+ * This structure describes a frequency band a wiphy
+ * is able to operate in.
+ *
+ * @channels: Array of channels the hardware can operate in
+ *	in this band.
+ * @band: the band this structure represents
+ * @n_channels: Number of channels in @channels
+ * @bitrates: Array of bitrates the hardware can operate with
+ *	in this band. Must be sorted to give a valid "supported
+ *	rates" IE, i.e. CCK rates first, then OFDM.
+ * @n_bitrates: Number of bitrates in @bitrates
+ * @ht_cap: HT capabilities in this band
+ * @vht_cap: VHT capabilities in this band
+ */
+struct ieee80211_supported_band {
+	struct ieee80211_channel *channels;
+	struct ieee80211_rate *bitrates;
+	enum ieee80211_band band;
+	int n_channels;
+	int n_bitrates;
+	struct ieee80211_sta_ht_cap ht_cap;
+	struct ieee80211_sta_vht_cap vht_cap;
+};
+
+/*
+ * Wireless hardware/device configuration structures and methods
+ */
+
+/**
+ * DOC: Actions and configuration
+ *
+ * Each wireless device and each virtual interface offer a set of configuration
+ * operations and other actions that are invoked by userspace. Each of these
+ * actions is described in the operations structure, and the parameters these
+ * operations use are described separately.
+ *
+ * Additionally, some operations are asynchronous and expect to get status
+ * information via some functions that drivers need to call.
+ *
+ * Scanning and BSS list handling with its associated functionality is described
+ * in a separate chapter.
+ */
+
+/**
+ * struct vif_params - describes virtual interface parameters
+ * @use_4addr: use 4-address frames
+ * @macaddr: address to use for this virtual interface.
+ *	If this parameter is set to zero address the driver may
+ *	determine the address as needed.
+ *	This feature is only fully supported by drivers that enable the
+ *	%NL80211_FEATURE_MAC_ON_CREATE flag.  Others may support creating
+ **	only p2p devices with specified MAC.
+ */
+struct vif_params {
+       int use_4addr;
+       u8 macaddr[ETH_ALEN];
+};
+
+/**
+ * struct key_params - key information
+ *
+ * Information about a key
+ *
+ * @key: key material
+ * @key_len: length of key material
+ * @cipher: cipher suite selector
+ * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
+ *	with the get_key() callback, must be in little endian,
+ *	length given by @seq_len.
+ * @seq_len: length of @seq.
+ */
+struct key_params {
+	const u8 *key;
+	const u8 *seq;
+	int key_len;
+	int seq_len;
+	u32 cipher;
+};
+
+/**
+ * struct cfg80211_chan_def - channel definition
+ * @chan: the (control) channel
+ * @width: channel width
+ * @center_freq1: center frequency of first segment
+ * @center_freq2: center frequency of second segment
+ *	(only with 80+80 MHz)
+ */
+struct cfg80211_chan_def {
+	struct ieee80211_channel *chan;
+	enum nl80211_chan_width width;
+	u32 center_freq1;
+	u32 center_freq2;
+};
+
+/**
+ * cfg80211_get_chandef_type - return old channel type from chandef
+ * @chandef: the channel definition
+ *
+ * Return: The old channel type (NOHT, HT20, HT40+/-) from a given
+ * chandef, which must have a bandwidth allowing this conversion.
+ */
+static inline enum nl80211_channel_type
+cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		return NL80211_CHAN_NO_HT;
+	case NL80211_CHAN_WIDTH_20:
+		return NL80211_CHAN_HT20;
+	case NL80211_CHAN_WIDTH_40:
+		if (chandef->center_freq1 > chandef->chan->center_freq)
+			return NL80211_CHAN_HT40PLUS;
+		return NL80211_CHAN_HT40MINUS;
+	default:
+		WARN_ON(1);
+		return NL80211_CHAN_NO_HT;
+	}
+}
+
+/**
+ * cfg80211_chandef_create - create channel definition using channel type
+ * @chandef: the channel definition struct to fill
+ * @channel: the control channel
+ * @chantype: the channel type
+ *
+ * Given a channel type, create a channel definition.
+ */
+void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
+			     struct ieee80211_channel *channel,
+			     enum nl80211_channel_type chantype);
+
+/**
+ * cfg80211_chandef_identical - check if two channel definitions are identical
+ * @chandef1: first channel definition
+ * @chandef2: second channel definition
+ *
+ * Return: %true if the channels defined by the channel definitions are
+ * identical, %false otherwise.
+ */
+static inline bool
+cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1,
+			   const struct cfg80211_chan_def *chandef2)
+{
+	return (chandef1->chan == chandef2->chan &&
+		chandef1->width == chandef2->width &&
+		chandef1->center_freq1 == chandef2->center_freq1 &&
+		chandef1->center_freq2 == chandef2->center_freq2);
+}
+
+/**
+ * cfg80211_chandef_compatible - check if two channel definitions are compatible
+ * @chandef1: first channel definition
+ * @chandef2: second channel definition
+ *
+ * Return: %NULL if the given channel definitions are incompatible,
+ * chandef1 or chandef2 otherwise.
+ */
+const struct cfg80211_chan_def *
+cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
+			    const struct cfg80211_chan_def *chandef2);
+
+/**
+ * cfg80211_chandef_valid - check if a channel definition is valid
+ * @chandef: the channel definition to check
+ * Return: %true if the channel definition is valid. %false otherwise.
+ */
+bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef);
+
+/**
+ * cfg80211_chandef_usable - check if secondary channels can be used
+ * @wiphy: the wiphy to validate against
+ * @chandef: the channel definition to check
+ * @prohibited_flags: the regulatory channel flags that must not be set
+ * Return: %true if secondary channels are usable. %false otherwise.
+ */
+bool cfg80211_chandef_usable(struct wiphy *wiphy,
+			     const struct cfg80211_chan_def *chandef,
+			     u32 prohibited_flags);
+
+/**
+ * cfg80211_chandef_dfs_required - checks if radar detection is required
+ * @wiphy: the wiphy to validate against
+ * @chandef: the channel definition to check
+ * @iftype: the interface type as specified in &enum nl80211_iftype
+ * Returns:
+ *	1 if radar detection is required, 0 if it is not, < 0 on error
+ */
+int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
+				  const struct cfg80211_chan_def *chandef,
+				  enum nl80211_iftype iftype);
+
+/**
+ * ieee80211_chandef_rate_flags - returns rate flags for a channel
+ *
+ * In some channel types, not all rates may be used - for example CCK
+ * rates may not be used in 5/10 MHz channels.
+ *
+ * @chandef: channel definition for the channel
+ *
+ * Returns: rate flags which apply for this channel
+ */
+static inline enum ieee80211_rate_flags
+ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		return IEEE80211_RATE_SUPPORTS_5MHZ;
+	case NL80211_CHAN_WIDTH_10:
+		return IEEE80211_RATE_SUPPORTS_10MHZ;
+	default:
+		break;
+	}
+	return 0;
+}
+
+/**
+ * ieee80211_chandef_max_power - maximum transmission power for the chandef
+ *
+ * In some regulations, the transmit power may depend on the configured channel
+ * bandwidth which may be defined as dBm/MHz. This function returns the actual
+ * max_power for non-standard (20 MHz) channels.
+ *
+ * @chandef: channel definition for the channel
+ *
+ * Returns: maximum allowed transmission power in dBm for the chandef
+ */
+static inline int
+ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		return min(chandef->chan->max_reg_power - 6,
+			   chandef->chan->max_power);
+	case NL80211_CHAN_WIDTH_10:
+		return min(chandef->chan->max_reg_power - 3,
+			   chandef->chan->max_power);
+	default:
+		break;
+	}
+	return chandef->chan->max_power;
+}
+
+/**
+ * enum survey_info_flags - survey information flags
+ *
+ * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
+ * @SURVEY_INFO_IN_USE: channel is currently being used
+ * @SURVEY_INFO_TIME: active time (in ms) was filled in
+ * @SURVEY_INFO_TIME_BUSY: busy time was filled in
+ * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in
+ * @SURVEY_INFO_TIME_RX: receive time was filled in
+ * @SURVEY_INFO_TIME_TX: transmit time was filled in
+ * @SURVEY_INFO_TIME_SCAN: scan time was filled in
+ *
+ * Used by the driver to indicate which info in &struct survey_info
+ * it has filled in during the get_survey().
+ */
+enum survey_info_flags {
+	SURVEY_INFO_NOISE_DBM		= BIT(0),
+	SURVEY_INFO_IN_USE		= BIT(1),
+	SURVEY_INFO_TIME		= BIT(2),
+	SURVEY_INFO_TIME_BUSY		= BIT(3),
+	SURVEY_INFO_TIME_EXT_BUSY	= BIT(4),
+	SURVEY_INFO_TIME_RX		= BIT(5),
+	SURVEY_INFO_TIME_TX		= BIT(6),
+	SURVEY_INFO_TIME_SCAN		= BIT(7),
+};
+
+/**
+ * struct survey_info - channel survey response
+ *
+ * @channel: the channel this survey record reports, may be %NULL for a single
+ *	record to report global statistics
+ * @filled: bitflag of flags from &enum survey_info_flags
+ * @noise: channel noise in dBm. This and all following fields are
+ *	optional
+ * @time: amount of time in ms the radio was turn on (on the channel)
+ * @time_busy: amount of time the primary channel was sensed busy
+ * @time_ext_busy: amount of time the extension channel was sensed busy
+ * @time_rx: amount of time the radio spent receiving data
+ * @time_tx: amount of time the radio spent transmitting data
+ * @time_scan: amount of time the radio spent for scanning
+ *
+ * Used by dump_survey() to report back per-channel survey information.
+ *
+ * This structure can later be expanded with things like
+ * channel duty cycle etc.
+ */
+struct survey_info {
+	struct ieee80211_channel *channel;
+	u64 time;
+	u64 time_busy;
+	u64 time_ext_busy;
+	u64 time_rx;
+	u64 time_tx;
+	u64 time_scan;
+	u32 filled;
+	s8 noise;
+};
+
+/**
+ * struct cfg80211_crypto_settings - Crypto settings
+ * @wpa_versions: indicates which, if any, WPA versions are enabled
+ *	(from enum nl80211_wpa_versions)
+ * @cipher_group: group key cipher suite (or 0 if unset)
+ * @n_ciphers_pairwise: number of AP supported unicast ciphers
+ * @ciphers_pairwise: unicast key cipher suites
+ * @n_akm_suites: number of AKM suites
+ * @akm_suites: AKM suites
+ * @control_port: Whether user space controls IEEE 802.1X port, i.e.,
+ *	sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
+ *	required to assume that the port is unauthorized until authorized by
+ *	user space. Otherwise, port is marked authorized by default.
+ * @control_port_ethertype: the control port protocol that should be
+ *	allowed through even on unauthorized ports
+ * @control_port_no_encrypt: TRUE to prevent encryption of control port
+ *	protocol frames.
+ */
+struct cfg80211_crypto_settings {
+	u32 wpa_versions;
+	u32 cipher_group;
+	int n_ciphers_pairwise;
+	u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES];
+	int n_akm_suites;
+	u32 akm_suites[NL80211_MAX_NR_AKM_SUITES];
+	bool control_port;
+	__be16 control_port_ethertype;
+	bool control_port_no_encrypt;
+};
+
+/**
+ * struct cfg80211_beacon_data - beacon data
+ * @head: head portion of beacon (before TIM IE)
+ *	or %NULL if not changed
+ * @tail: tail portion of beacon (after TIM IE)
+ *	or %NULL if not changed
+ * @head_len: length of @head
+ * @tail_len: length of @tail
+ * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL
+ * @beacon_ies_len: length of beacon_ies in octets
+ * @proberesp_ies: extra information element(s) to add into Probe Response
+ *	frames or %NULL
+ * @proberesp_ies_len: length of proberesp_ies in octets
+ * @assocresp_ies: extra information element(s) to add into (Re)Association
+ *	Response frames or %NULL
+ * @assocresp_ies_len: length of assocresp_ies in octets
+ * @probe_resp_len: length of probe response template (@probe_resp)
+ * @probe_resp: probe response template (AP mode only)
+ */
+struct cfg80211_beacon_data {
+	const u8 *head, *tail;
+	const u8 *beacon_ies;
+	const u8 *proberesp_ies;
+	const u8 *assocresp_ies;
+	const u8 *probe_resp;
+
+	size_t head_len, tail_len;
+	size_t beacon_ies_len;
+	size_t proberesp_ies_len;
+	size_t assocresp_ies_len;
+	size_t probe_resp_len;
+};
+
+struct mac_address {
+	u8 addr[ETH_ALEN];
+};
+
+/**
+ * struct cfg80211_acl_data - Access control list data
+ *
+ * @acl_policy: ACL policy to be applied on the station's
+ *	entry specified by mac_addr
+ * @n_acl_entries: Number of MAC address entries passed
+ * @mac_addrs: List of MAC addresses of stations to be used for ACL
+ */
+struct cfg80211_acl_data {
+	enum nl80211_acl_policy acl_policy;
+	int n_acl_entries;
+
+	/* Keep it last */
+	struct mac_address mac_addrs[];
+};
+
+/**
+ * struct cfg80211_ap_settings - AP configuration
+ *
+ * Used to configure an AP interface.
+ *
+ * @chandef: defines the channel to use
+ * @beacon: beacon data
+ * @beacon_interval: beacon interval
+ * @dtim_period: DTIM period
+ * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from
+ *	user space)
+ * @ssid_len: length of @ssid
+ * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames
+ * @crypto: crypto settings
+ * @privacy: the BSS uses privacy
+ * @auth_type: Authentication type (algorithm)
+ * @smps_mode: SMPS mode
+ * @inactivity_timeout: time in seconds to determine station's inactivity.
+ * @p2p_ctwindow: P2P CT Window
+ * @p2p_opp_ps: P2P opportunistic PS
+ * @acl: ACL configuration used by the drivers which has support for
+ *	MAC address based access control
+ */
+struct cfg80211_ap_settings {
+	struct cfg80211_chan_def chandef;
+
+	struct cfg80211_beacon_data beacon;
+
+	int beacon_interval, dtim_period;
+	const u8 *ssid;
+	size_t ssid_len;
+	enum nl80211_hidden_ssid hidden_ssid;
+	struct cfg80211_crypto_settings crypto;
+	bool privacy;
+	enum nl80211_auth_type auth_type;
+	enum nl80211_smps_mode smps_mode;
+	int inactivity_timeout;
+	u8 p2p_ctwindow;
+	bool p2p_opp_ps;
+	const struct cfg80211_acl_data *acl;
+};
+
+/**
+ * struct cfg80211_csa_settings - channel switch settings
+ *
+ * Used for channel switch
+ *
+ * @chandef: defines the channel to use after the switch
+ * @beacon_csa: beacon data while performing the switch
+ * @counter_offsets_beacon: offsets of the counters within the beacon (tail)
+ * @counter_offsets_presp: offsets of the counters within the probe response
+ * @n_counter_offsets_beacon: number of csa counters the beacon (tail)
+ * @n_counter_offsets_presp: number of csa counters in the probe response
+ * @beacon_after: beacon data to be used on the new channel
+ * @radar_required: whether radar detection is required on the new channel
+ * @block_tx: whether transmissions should be blocked while changing
+ * @count: number of beacons until switch
+ */
+struct cfg80211_csa_settings {
+	struct cfg80211_chan_def chandef;
+	struct cfg80211_beacon_data beacon_csa;
+	const u16 *counter_offsets_beacon;
+	const u16 *counter_offsets_presp;
+	unsigned int n_counter_offsets_beacon;
+	unsigned int n_counter_offsets_presp;
+	struct cfg80211_beacon_data beacon_after;
+	bool radar_required;
+	bool block_tx;
+	u8 count;
+};
+
+/**
+ * enum station_parameters_apply_mask - station parameter values to apply
+ * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
+ * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
+ * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
+ *
+ * Not all station parameters have in-band "no change" signalling,
+ * for those that don't these flags will are used.
+ */
+enum station_parameters_apply_mask {
+	STATION_PARAM_APPLY_UAPSD = BIT(0),
+	STATION_PARAM_APPLY_CAPABILITY = BIT(1),
+	STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
+};
+
+/**
+ * struct station_parameters - station parameters
+ *
+ * Used to change and create a new station.
+ *
+ * @vlan: vlan interface station should belong to
+ * @supported_rates: supported rates in IEEE 802.11 format
+ *	(or NULL for no change)
+ * @supported_rates_len: number of supported rates
+ * @sta_flags_mask: station flags that changed
+ *	(bitmask of BIT(NL80211_STA_FLAG_...))
+ * @sta_flags_set: station flags values
+ *	(bitmask of BIT(NL80211_STA_FLAG_...))
+ * @listen_interval: listen interval or -1 for no change
+ * @aid: AID or zero for no change
+ * @plink_action: plink action to take
+ * @plink_state: set the peer link state for a station
+ * @ht_capa: HT capabilities of station
+ * @vht_capa: VHT capabilities of station
+ * @uapsd_queues: bitmap of queues configured for uapsd. same format
+ *	as the AC bitmap in the QoS info field
+ * @max_sp: max Service Period. same format as the MAX_SP in the
+ *	QoS info field (but already shifted down)
+ * @sta_modify_mask: bitmap indicating which parameters changed
+ *	(for those that don't have a natural "no change" value),
+ *	see &enum station_parameters_apply_mask
+ * @local_pm: local link-specific mesh power save mode (no change when set
+ *	to unknown)
+ * @capability: station capability
+ * @ext_capab: extended capabilities of the station
+ * @ext_capab_len: number of extended capabilities
+ * @supported_channels: supported channels in IEEE 802.11 format
+ * @supported_channels_len: number of supported channels
+ * @supported_oper_classes: supported oper classes in IEEE 802.11 format
+ * @supported_oper_classes_len: number of supported operating classes
+ * @opmode_notif: operating mode field from Operating Mode Notification
+ * @opmode_notif_used: information if operating mode field is used
+ */
+struct station_parameters {
+	const u8 *supported_rates;
+	struct net_device *vlan;
+	u32 sta_flags_mask, sta_flags_set;
+	u32 sta_modify_mask;
+	int listen_interval;
+	u16 aid;
+	u8 supported_rates_len;
+	u8 plink_action;
+	u8 plink_state;
+	const struct ieee80211_ht_cap *ht_capa;
+	const struct ieee80211_vht_cap *vht_capa;
+	u8 uapsd_queues;
+	u8 max_sp;
+	enum nl80211_mesh_power_mode local_pm;
+	u16 capability;
+	const u8 *ext_capab;
+	u8 ext_capab_len;
+	const u8 *supported_channels;
+	u8 supported_channels_len;
+	const u8 *supported_oper_classes;
+	u8 supported_oper_classes_len;
+	u8 opmode_notif;
+	bool opmode_notif_used;
+};
+
+/**
+ * struct station_del_parameters - station deletion parameters
+ *
+ * Used to delete a station entry (or all stations).
+ *
+ * @mac: MAC address of the station to remove or NULL to remove all stations
+ * @subtype: Management frame subtype to use for indicating removal
+ *	(10 = Disassociation, 12 = Deauthentication)
+ * @reason_code: Reason code for the Disassociation/Deauthentication frame
+ */
+struct station_del_parameters {
+	const u8 *mac;
+	u8 subtype;
+	u16 reason_code;
+};
+
+/**
+ * enum cfg80211_station_type - the type of station being modified
+ * @CFG80211_STA_AP_CLIENT: client of an AP interface
+ * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has
+ *	the AP MLME in the device
+ * @CFG80211_STA_AP_STA: AP station on managed interface
+ * @CFG80211_STA_IBSS: IBSS station
+ * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry
+ *	while TDLS setup is in progress, it moves out of this state when
+ *	being marked authorized; use this only if TDLS with external setup is
+ *	supported/used)
+ * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active
+ *	entry that is operating, has been marked authorized by userspace)
+ * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
+ * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
+ */
+enum cfg80211_station_type {
+	CFG80211_STA_AP_CLIENT,
+	CFG80211_STA_AP_MLME_CLIENT,
+	CFG80211_STA_AP_STA,
+	CFG80211_STA_IBSS,
+	CFG80211_STA_TDLS_PEER_SETUP,
+	CFG80211_STA_TDLS_PEER_ACTIVE,
+	CFG80211_STA_MESH_PEER_KERNEL,
+	CFG80211_STA_MESH_PEER_USER,
+};
+
+/**
+ * cfg80211_check_station_change - validate parameter changes
+ * @wiphy: the wiphy this operates on
+ * @params: the new parameters for a station
+ * @statype: the type of station being modified
+ *
+ * Utility function for the @change_station driver method. Call this function
+ * with the appropriate station type looking up the station (and checking that
+ * it exists). It will verify whether the station change is acceptable, and if
+ * not will return an error code. Note that it may modify the parameters for
+ * backward compatibility reasons, so don't use them before calling this.
+ */
+int cfg80211_check_station_change(struct wiphy *wiphy,
+				  struct station_parameters *params,
+				  enum cfg80211_station_type statype);
+
+/**
+ * enum station_info_rate_flags - bitrate info flags
+ *
+ * Used by the driver to indicate the specific rate transmission
+ * type for 802.11n transmissions.
+ *
+ * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
+ * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
+ * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
+ * @RATE_INFO_FLAGS_60G: 60GHz MCS
+ */
+enum rate_info_flags {
+	RATE_INFO_FLAGS_MCS			= BIT(0),
+	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
+	RATE_INFO_FLAGS_SHORT_GI		= BIT(2),
+	RATE_INFO_FLAGS_60G			= BIT(3),
+};
+
+/**
+ * enum rate_info_bw - rate bandwidth information
+ *
+ * Used by the driver to indicate the rate bandwidth.
+ *
+ * @RATE_INFO_BW_5: 5 MHz bandwidth
+ * @RATE_INFO_BW_10: 10 MHz bandwidth
+ * @RATE_INFO_BW_20: 20 MHz bandwidth
+ * @RATE_INFO_BW_40: 40 MHz bandwidth
+ * @RATE_INFO_BW_80: 80 MHz bandwidth
+ * @RATE_INFO_BW_160: 160 MHz bandwidth
+ */
+enum rate_info_bw {
+	RATE_INFO_BW_5,
+	RATE_INFO_BW_10,
+	RATE_INFO_BW_20,
+	RATE_INFO_BW_40,
+	RATE_INFO_BW_80,
+	RATE_INFO_BW_160,
+};
+
+/**
+ * struct rate_info - bitrate information
+ *
+ * Information about a receiving or transmitting bitrate
+ *
+ * @flags: bitflag of flags from &enum rate_info_flags
+ * @mcs: mcs index if struct describes a 802.11n bitrate
+ * @legacy: bitrate in 100kbit/s for 802.11abg
+ * @nss: number of streams (VHT only)
+ * @bw: bandwidth (from &enum rate_info_bw)
+ */
+struct rate_info {
+	u8 flags;
+	u8 mcs;
+	u16 legacy;
+	u8 nss;
+	u8 bw;
+};
+
+/**
+ * enum station_info_rate_flags - bitrate info flags
+ *
+ * Used by the driver to indicate the specific rate transmission
+ * type for 802.11n transmissions.
+ *
+ * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled
+ * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled
+ * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled
+ */
+enum bss_param_flags {
+	BSS_PARAM_FLAGS_CTS_PROT	= 1<<0,
+	BSS_PARAM_FLAGS_SHORT_PREAMBLE	= 1<<1,
+	BSS_PARAM_FLAGS_SHORT_SLOT_TIME	= 1<<2,
+};
+
+/**
+ * struct sta_bss_parameters - BSS parameters for the attached station
+ *
+ * Information about the currently associated BSS
+ *
+ * @flags: bitflag of flags from &enum bss_param_flags
+ * @dtim_period: DTIM period for the BSS
+ * @beacon_interval: beacon interval
+ */
+struct sta_bss_parameters {
+	u8 flags;
+	u8 dtim_period;
+	u16 beacon_interval;
+};
+
+/**
+ * struct cfg80211_tid_stats - per-TID statistics
+ * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to
+ *	indicate the relevant values in this struct are filled
+ * @rx_msdu: number of received MSDUs
+ * @tx_msdu: number of (attempted) transmitted MSDUs
+ * @tx_msdu_retries: number of retries (not counting the first) for
+ *	transmitted MSDUs
+ * @tx_msdu_failed: number of failed transmitted MSDUs
+ */
+struct cfg80211_tid_stats {
+	u32 filled;
+	u64 rx_msdu;
+	u64 tx_msdu;
+	u64 tx_msdu_retries;
+	u64 tx_msdu_failed;
+};
+
+#define IEEE80211_MAX_CHAINS	4
+
+/**
+ * struct station_info - station information
+ *
+ * Station information filled by driver for get_station() and dump_station.
+ *
+ * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to
+ *	indicate the relevant values in this struct for them
+ * @connected_time: time(in secs) since a station is last connected
+ * @inactive_time: time since last station activity (tx/rx) in milliseconds
+ * @rx_bytes: bytes (size of MPDUs) received from this station
+ * @tx_bytes: bytes (size of MPDUs) transmitted to this station
+ * @llid: mesh local link id
+ * @plid: mesh peer link id
+ * @plink_state: mesh peer link state
+ * @signal: The signal strength, type depends on the wiphy's signal_type.
+ *	For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
+ * @signal_avg: Average signal strength, type depends on the wiphy's signal_type.
+ *	For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
+ * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg
+ * @chain_signal: per-chain signal strength of last received packet in dBm
+ * @chain_signal_avg: per-chain signal strength average in dBm
+ * @txrate: current unicast bitrate from this station
+ * @rxrate: current unicast bitrate to this station
+ * @rx_packets: packets (MSDUs & MMPDUs) received from this station
+ * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station
+ * @tx_retries: cumulative retry counts (MPDUs)
+ * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK)
+ * @rx_dropped_misc:  Dropped for un-specified reason.
+ * @bss_param: current BSS parameters
+ * @generation: generation number for nl80211 dumps.
+ *	This number should increase every time the list of stations
+ *	changes, i.e. when a station is added or removed, so that
+ *	userspace can tell whether it got a consistent snapshot.
+ * @assoc_req_ies: IEs from (Re)Association Request.
+ *	This is used only when in AP mode with drivers that do not use
+ *	user space MLME/SME implementation. The information is provided for
+ *	the cfg80211_new_sta() calls to notify user space of the IEs.
+ * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets.
+ * @sta_flags: station flags mask & values
+ * @beacon_loss_count: Number of times beacon loss event has triggered.
+ * @t_offset: Time offset of the station relative to this host.
+ * @local_pm: local mesh STA power save mode
+ * @peer_pm: peer mesh STA power save mode
+ * @nonpeer_pm: non-peer mesh STA power save mode
+ * @expected_throughput: expected throughput in kbps (including 802.11 headers)
+ *	towards this station.
+ * @rx_beacon: number of beacons received from this peer
+ * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received
+ *	from this peer
+ * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last
+ *	(IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs.
+ */
+struct station_info {
+	u32 filled;
+	u32 connected_time;
+	u32 inactive_time;
+	u64 rx_bytes;
+	u64 tx_bytes;
+	u16 llid;
+	u16 plid;
+	u8 plink_state;
+	s8 signal;
+	s8 signal_avg;
+
+	u8 chains;
+	s8 chain_signal[IEEE80211_MAX_CHAINS];
+	s8 chain_signal_avg[IEEE80211_MAX_CHAINS];
+
+	struct rate_info txrate;
+	struct rate_info rxrate;
+	u32 rx_packets;
+	u32 tx_packets;
+	u32 tx_retries;
+	u32 tx_failed;
+	u32 rx_dropped_misc;
+	struct sta_bss_parameters bss_param;
+	struct nl80211_sta_flag_update sta_flags;
+
+	int generation;
+
+	const u8 *assoc_req_ies;
+	size_t assoc_req_ies_len;
+
+	u32 beacon_loss_count;
+	s64 t_offset;
+	enum nl80211_mesh_power_mode local_pm;
+	enum nl80211_mesh_power_mode peer_pm;
+	enum nl80211_mesh_power_mode nonpeer_pm;
+
+	u32 expected_throughput;
+
+	u64 rx_beacon;
+	u8 rx_beacon_signal_avg;
+	struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1];
+};
+
+/**
+ * cfg80211_get_station - retrieve information about a given station
+ * @dev: the device where the station is supposed to be connected to
+ * @mac_addr: the mac address of the station of interest
+ * @sinfo: pointer to the structure to fill with the information
+ *
+ * Returns 0 on success and sinfo is filled with the available information
+ * otherwise returns a negative error code and the content of sinfo has to be
+ * considered undefined.
+ */
+int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr,
+			 struct station_info *sinfo);
+
+/**
+ * enum monitor_flags - monitor flags
+ *
+ * Monitor interface configuration flags. Note that these must be the bits
+ * according to the nl80211 flags.
+ *
+ * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
+ * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
+ * @MONITOR_FLAG_CONTROL: pass control frames
+ * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
+ * @MONITOR_FLAG_COOK_FRAMES: report frames after processing
+ * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
+ */
+enum monitor_flags {
+	MONITOR_FLAG_FCSFAIL		= 1<<NL80211_MNTR_FLAG_FCSFAIL,
+	MONITOR_FLAG_PLCPFAIL		= 1<<NL80211_MNTR_FLAG_PLCPFAIL,
+	MONITOR_FLAG_CONTROL		= 1<<NL80211_MNTR_FLAG_CONTROL,
+	MONITOR_FLAG_OTHER_BSS		= 1<<NL80211_MNTR_FLAG_OTHER_BSS,
+	MONITOR_FLAG_COOK_FRAMES	= 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
+	MONITOR_FLAG_ACTIVE		= 1<<NL80211_MNTR_FLAG_ACTIVE,
+};
+
+/**
+ * enum mpath_info_flags -  mesh path information flags
+ *
+ * Used by the driver to indicate which info in &struct mpath_info it has filled
+ * in during get_station() or dump_station().
+ *
+ * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled
+ * @MPATH_INFO_SN: @sn filled
+ * @MPATH_INFO_METRIC: @metric filled
+ * @MPATH_INFO_EXPTIME: @exptime filled
+ * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
+ * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
+ * @MPATH_INFO_FLAGS: @flags filled
+ */
+enum mpath_info_flags {
+	MPATH_INFO_FRAME_QLEN		= BIT(0),
+	MPATH_INFO_SN			= BIT(1),
+	MPATH_INFO_METRIC		= BIT(2),
+	MPATH_INFO_EXPTIME		= BIT(3),
+	MPATH_INFO_DISCOVERY_TIMEOUT	= BIT(4),
+	MPATH_INFO_DISCOVERY_RETRIES	= BIT(5),
+	MPATH_INFO_FLAGS		= BIT(6),
+};
+
+/**
+ * struct mpath_info - mesh path information
+ *
+ * Mesh path information filled by driver for get_mpath() and dump_mpath().
+ *
+ * @filled: bitfield of flags from &enum mpath_info_flags
+ * @frame_qlen: number of queued frames for this destination
+ * @sn: target sequence number
+ * @metric: metric (cost) of this mesh path
+ * @exptime: expiration time for the mesh path from now, in msecs
+ * @flags: mesh path flags
+ * @discovery_timeout: total mesh path discovery timeout, in msecs
+ * @discovery_retries: mesh path discovery retries
+ * @generation: generation number for nl80211 dumps.
+ *	This number should increase every time the list of mesh paths
+ *	changes, i.e. when a station is added or removed, so that
+ *	userspace can tell whether it got a consistent snapshot.
+ */
+struct mpath_info {
+	u32 filled;
+	u32 frame_qlen;
+	u32 sn;
+	u32 metric;
+	u32 exptime;
+	u32 discovery_timeout;
+	u8 discovery_retries;
+	u8 flags;
+
+	int generation;
+};
+
+/**
+ * struct bss_parameters - BSS parameters
+ *
+ * Used to change BSS parameters (mainly for AP mode).
+ *
+ * @use_cts_prot: Whether to use CTS protection
+ *	(0 = no, 1 = yes, -1 = do not change)
+ * @use_short_preamble: Whether the use of short preambles is allowed
+ *	(0 = no, 1 = yes, -1 = do not change)
+ * @use_short_slot_time: Whether the use of short slot time is allowed
+ *	(0 = no, 1 = yes, -1 = do not change)
+ * @basic_rates: basic rates in IEEE 802.11 format
+ *	(or NULL for no change)
+ * @basic_rates_len: number of basic rates
+ * @ap_isolate: do not forward packets between connected stations
+ * @ht_opmode: HT Operation mode
+ * 	(u16 = opmode, -1 = do not change)
+ * @p2p_ctwindow: P2P CT Window (-1 = no change)
+ * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
+ */
+struct bss_parameters {
+	int use_cts_prot;
+	int use_short_preamble;
+	int use_short_slot_time;
+	const u8 *basic_rates;
+	u8 basic_rates_len;
+	int ap_isolate;
+	int ht_opmode;
+	s8 p2p_ctwindow, p2p_opp_ps;
+};
+
+/**
+ * struct mesh_config - 802.11s mesh configuration
+ *
+ * These parameters can be changed while the mesh is active.
+ *
+ * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used
+ *	by the Mesh Peering Open message
+ * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units
+ *	used by the Mesh Peering Open message
+ * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by
+ *	the mesh peering management to close a mesh peering
+ * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this
+ *	mesh interface
+ * @dot11MeshMaxRetries: the maximum number of peer link open retries that can
+ *	be sent to establish a new peer link instance in a mesh
+ * @dot11MeshTTL: the value of TTL field set at a source mesh STA
+ * @element_ttl: the value of TTL field set at a mesh STA for path selection
+ *	elements
+ * @auto_open_plinks: whether we should automatically open peer links when we
+ *	detect compatible mesh peers
+ * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to
+ *	synchronize to for 11s default synchronization method
+ * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ
+ *	that an originator mesh STA can send to a particular path target
+ * @path_refresh_time: how frequently to refresh mesh paths in milliseconds
+ * @min_discovery_timeout: the minimum length of time to wait until giving up on
+ *	a path discovery in milliseconds
+ * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs
+ *	receiving a PREQ shall consider the forwarding information from the
+ *	root to be valid. (TU = time unit)
+ * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during
+ *	which a mesh STA can send only one action frame containing a PREQ
+ *	element
+ * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during
+ *	which a mesh STA can send only one Action frame containing a PERR
+ *	element
+ * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that
+ *	it takes for an HWMP information element to propagate across the mesh
+ * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA
+ * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root
+ *	announcements are transmitted
+ * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh
+ *	station has access to a broader network beyond the MBSS. (This is
+ *	missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true
+ *	only means that the station will announce others it's a mesh gate, but
+ *	not necessarily using the gate announcement protocol. Still keeping the
+ *	same nomenclature to be in sync with the spec)
+ * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding
+ *	entity (default is TRUE - forwarding entity)
+ * @rssi_threshold: the threshold for average signal strength of candidate
+ *	station to establish a peer link
+ * @ht_opmode: mesh HT protection mode
+ *
+ * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs
+ *	receiving a proactive PREQ shall consider the forwarding information to
+ *	the root mesh STA to be valid.
+ *
+ * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive
+ *	PREQs are transmitted.
+ * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs)
+ *	during which a mesh STA can send only one Action frame containing
+ *	a PREQ element for root path confirmation.
+ * @power_mode: The default mesh power save mode which will be the initial
+ *	setting for new peer links.
+ * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake
+ *	after transmitting its beacon.
+ * @plink_timeout: If no tx activity is seen from a STA we've established
+ *	peering with for longer than this time (in seconds), then remove it
+ *	from the STA's list of peers.  Default is 30 minutes.
+ */
+struct mesh_config {
+	u16 dot11MeshRetryTimeout;
+	u16 dot11MeshConfirmTimeout;
+	u16 dot11MeshHoldingTimeout;
+	u16 dot11MeshMaxPeerLinks;
+	u8 dot11MeshMaxRetries;
+	u8 dot11MeshTTL;
+	u8 element_ttl;
+	bool auto_open_plinks;
+	u32 dot11MeshNbrOffsetMaxNeighbor;
+	u8 dot11MeshHWMPmaxPREQretries;
+	u32 path_refresh_time;
+	u16 min_discovery_timeout;
+	u32 dot11MeshHWMPactivePathTimeout;
+	u16 dot11MeshHWMPpreqMinInterval;
+	u16 dot11MeshHWMPperrMinInterval;
+	u16 dot11MeshHWMPnetDiameterTraversalTime;
+	u8 dot11MeshHWMPRootMode;
+	u16 dot11MeshHWMPRannInterval;
+	bool dot11MeshGateAnnouncementProtocol;
+	bool dot11MeshForwarding;
+	s32 rssi_threshold;
+	u16 ht_opmode;
+	u32 dot11MeshHWMPactivePathToRootTimeout;
+	u16 dot11MeshHWMProotInterval;
+	u16 dot11MeshHWMPconfirmationInterval;
+	enum nl80211_mesh_power_mode power_mode;
+	u16 dot11MeshAwakeWindowDuration;
+	u32 plink_timeout;
+};
+
+/**
+ * struct mesh_setup - 802.11s mesh setup configuration
+ * @chandef: defines the channel to use
+ * @mesh_id: the mesh ID
+ * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
+ * @sync_method: which synchronization method to use
+ * @path_sel_proto: which path selection protocol to use
+ * @path_metric: which metric to use
+ * @auth_id: which authentication method this mesh is using
+ * @ie: vendor information elements (optional)
+ * @ie_len: length of vendor information elements
+ * @is_authenticated: this mesh requires authentication
+ * @is_secure: this mesh uses security
+ * @user_mpm: userspace handles all MPM functions
+ * @dtim_period: DTIM period to use
+ * @beacon_interval: beacon interval to use
+ * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
+ * @basic_rates: basic rates to use when creating the mesh
+ *
+ * These parameters are fixed when the mesh is created.
+ */
+struct mesh_setup {
+	struct cfg80211_chan_def chandef;
+	const u8 *mesh_id;
+	u8 mesh_id_len;
+	u8 sync_method;
+	u8 path_sel_proto;
+	u8 path_metric;
+	u8 auth_id;
+	const u8 *ie;
+	u8 ie_len;
+	bool is_authenticated;
+	bool is_secure;
+	bool user_mpm;
+	u8 dtim_period;
+	u16 beacon_interval;
+	int mcast_rate[IEEE80211_NUM_BANDS];
+	u32 basic_rates;
+};
+
+/**
+ * struct ocb_setup - 802.11p OCB mode setup configuration
+ * @chandef: defines the channel to use
+ *
+ * These parameters are fixed when connecting to the network
+ */
+struct ocb_setup {
+	struct cfg80211_chan_def chandef;
+};
+
+/**
+ * struct ieee80211_txq_params - TX queue parameters
+ * @ac: AC identifier
+ * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled
+ * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range
+ *	1..32767]
+ * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range
+ *	1..32767]
+ * @aifs: Arbitration interframe space [0..255]
+ */
+struct ieee80211_txq_params {
+	enum nl80211_ac ac;
+	u16 txop;
+	u16 cwmin;
+	u16 cwmax;
+	u8 aifs;
+};
+
+/**
+ * DOC: Scanning and BSS list handling
+ *
+ * The scanning process itself is fairly simple, but cfg80211 offers quite
+ * a bit of helper functionality. To start a scan, the scan operation will
+ * be invoked with a scan definition. This scan definition contains the
+ * channels to scan, and the SSIDs to send probe requests for (including the
+ * wildcard, if desired). A passive scan is indicated by having no SSIDs to
+ * probe. Additionally, a scan request may contain extra information elements
+ * that should be added to the probe request. The IEs are guaranteed to be
+ * well-formed, and will not exceed the maximum length the driver advertised
+ * in the wiphy structure.
+ *
+ * When scanning finds a BSS, cfg80211 needs to be notified of that, because
+ * it is responsible for maintaining the BSS list; the driver should not
+ * maintain a list itself. For this notification, various functions exist.
+ *
+ * Since drivers do not maintain a BSS list, there are also a number of
+ * functions to search for a BSS and obtain information about it from the
+ * BSS structure cfg80211 maintains. The BSS list is also made available
+ * to userspace.
+ */
+
+/**
+ * struct cfg80211_ssid - SSID description
+ * @ssid: the SSID
+ * @ssid_len: length of the ssid
+ */
+struct cfg80211_ssid {
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	u8 ssid_len;
+};
+
+/**
+ * struct cfg80211_scan_request - scan request description
+ *
+ * @ssids: SSIDs to scan for (active scan only)
+ * @n_ssids: number of SSIDs
+ * @channels: channels to scan on.
+ * @n_channels: total number of channels to scan
+ * @scan_width: channel width for scanning
+ * @ie: optional information element(s) to add into Probe Request or %NULL
+ * @ie_len: length of ie in octets
+ * @flags: bit field of flags controlling operation
+ * @rates: bitmap of rates to advertise for each band
+ * @wiphy: the wiphy this was for
+ * @scan_start: time (in jiffies) when the scan started
+ * @wdev: the wireless device to scan for
+ * @aborted: (internal) scan request was notified as aborted
+ * @notified: (internal) scan request was notified as done or aborted
+ * @no_cck: used to send probe requests at non CCK rate in 2GHz band
+ * @mac_addr: MAC address used with randomisation
+ * @mac_addr_mask: MAC address mask used with randomisation, bits that
+ *	are 0 in the mask should be randomised, bits that are 1 should
+ *	be taken from the @mac_addr
+ */
+struct cfg80211_scan_request {
+	struct cfg80211_ssid *ssids;
+	int n_ssids;
+	u32 n_channels;
+	enum nl80211_bss_scan_width scan_width;
+	const u8 *ie;
+	size_t ie_len;
+	u32 flags;
+
+	u32 rates[IEEE80211_NUM_BANDS];
+
+	struct wireless_dev *wdev;
+
+	u8 mac_addr[ETH_ALEN] __aligned(2);
+	u8 mac_addr_mask[ETH_ALEN] __aligned(2);
+
+	/* internal */
+	struct wiphy *wiphy;
+	unsigned long scan_start;
+	bool aborted, notified;
+	bool no_cck;
+
+	/* keep last */
+	struct ieee80211_channel *channels[0];
+};
+
+static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask)
+{
+	int i;
+
+	get_random_bytes(buf, ETH_ALEN);
+	for (i = 0; i < ETH_ALEN; i++) {
+		buf[i] &= ~mask[i];
+		buf[i] |= addr[i] & mask[i];
+	}
+}
+
+/**
+ * struct cfg80211_match_set - sets of attributes to match
+ *
+ * @ssid: SSID to be matched; may be zero-length for no match (RSSI only)
+ * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
+ */
+struct cfg80211_match_set {
+	struct cfg80211_ssid ssid;
+	s32 rssi_thold;
+};
+
+/**
+ * struct cfg80211_sched_scan_request - scheduled scan request description
+ *
+ * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans)
+ * @n_ssids: number of SSIDs
+ * @n_channels: total number of channels to scan
+ * @scan_width: channel width for scanning
+ * @interval: interval between each scheduled scan cycle
+ * @ie: optional information element(s) to add into Probe Request or %NULL
+ * @ie_len: length of ie in octets
+ * @flags: bit field of flags controlling operation
+ * @match_sets: sets of parameters to be matched for a scan result
+ * 	entry to be considered valid and to be passed to the host
+ * 	(others are filtered out).
+ *	If ommited, all results are passed.
+ * @n_match_sets: number of match sets
+ * @wiphy: the wiphy this was for
+ * @dev: the interface
+ * @scan_start: start time of the scheduled scan
+ * @channels: channels to scan
+ * @min_rssi_thold: for drivers only supporting a single threshold, this
+ *	contains the minimum over all matchsets
+ * @mac_addr: MAC address used with randomisation
+ * @mac_addr_mask: MAC address mask used with randomisation, bits that
+ *	are 0 in the mask should be randomised, bits that are 1 should
+ *	be taken from the @mac_addr
+ * @rcu_head: RCU callback used to free the struct
+ * @owner_nlportid: netlink portid of owner (if this should is a request
+ *	owned by a particular socket)
+ * @delay: delay in seconds to use before starting the first scan
+ *	cycle.  The driver may ignore this parameter and start
+ *	immediately (or at any other time), if this feature is not
+ *	supported.
+ */
+struct cfg80211_sched_scan_request {
+	struct cfg80211_ssid *ssids;
+	int n_ssids;
+	u32 n_channels;
+	enum nl80211_bss_scan_width scan_width;
+	u32 interval;
+	const u8 *ie;
+	size_t ie_len;
+	u32 flags;
+	struct cfg80211_match_set *match_sets;
+	int n_match_sets;
+	s32 min_rssi_thold;
+	u32 delay;
+
+	u8 mac_addr[ETH_ALEN] __aligned(2);
+	u8 mac_addr_mask[ETH_ALEN] __aligned(2);
+
+	/* internal */
+	struct wiphy *wiphy;
+	struct net_device *dev;
+	unsigned long scan_start;
+	struct rcu_head rcu_head;
+	u32 owner_nlportid;
+
+	/* keep last */
+	struct ieee80211_channel *channels[0];
+};
+
+/**
+ * enum cfg80211_signal_type - signal type
+ *
+ * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available
+ * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm)
+ * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100
+ */
+enum cfg80211_signal_type {
+	CFG80211_SIGNAL_TYPE_NONE,
+	CFG80211_SIGNAL_TYPE_MBM,
+	CFG80211_SIGNAL_TYPE_UNSPEC,
+};
+
+/**
+ * struct cfg80211_bss_ie_data - BSS entry IE data
+ * @tsf: TSF contained in the frame that carried these IEs
+ * @rcu_head: internal use, for freeing
+ * @len: length of the IEs
+ * @from_beacon: these IEs are known to come from a beacon
+ * @data: IE data
+ */
+struct cfg80211_bss_ies {
+	u64 tsf;
+	struct rcu_head rcu_head;
+	int len;
+	bool from_beacon;
+	u8 data[];
+};
+
+/**
+ * struct cfg80211_bss - BSS description
+ *
+ * This structure describes a BSS (which may also be a mesh network)
+ * for use in scan results and similar.
+ *
+ * @channel: channel this BSS is on
+ * @scan_width: width of the control channel
+ * @bssid: BSSID of the BSS
+ * @beacon_interval: the beacon interval as from the frame
+ * @capability: the capability field in host byte order
+ * @ies: the information elements (Note that there is no guarantee that these
+ *	are well-formed!); this is a pointer to either the beacon_ies or
+ *	proberesp_ies depending on whether Probe Response frame has been
+ *	received. It is always non-%NULL.
+ * @beacon_ies: the information elements from the last Beacon frame
+ *	(implementation note: if @hidden_beacon_bss is set this struct doesn't
+ *	own the beacon_ies, but they're just pointers to the ones from the
+ *	@hidden_beacon_bss struct)
+ * @proberesp_ies: the information elements from the last Probe Response frame
+ * @hidden_beacon_bss: in case this BSS struct represents a probe response from
+ *	a BSS that hides the SSID in its beacon, this points to the BSS struct
+ *	that holds the beacon data. @beacon_ies is still valid, of course, and
+ *	points to the same data as hidden_beacon_bss->beacon_ies in that case.
+ * @signal: signal strength value (type depends on the wiphy's signal_type)
+ * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
+ */
+struct cfg80211_bss {
+	struct ieee80211_channel *channel;
+	enum nl80211_bss_scan_width scan_width;
+
+	const struct cfg80211_bss_ies __rcu *ies;
+	const struct cfg80211_bss_ies __rcu *beacon_ies;
+	const struct cfg80211_bss_ies __rcu *proberesp_ies;
+
+	struct cfg80211_bss *hidden_beacon_bss;
+
+	s32 signal;
+
+	u16 beacon_interval;
+	u16 capability;
+
+	u8 bssid[ETH_ALEN];
+
+	u8 priv[0] __aligned(sizeof(void *));
+};
+
+/**
+ * ieee80211_bss_get_ie - find IE with given ID
+ * @bss: the bss to search
+ * @ie: the IE ID
+ *
+ * Note that the return value is an RCU-protected pointer, so
+ * rcu_read_lock() must be held when calling this function.
+ * Return: %NULL if not found.
+ */
+const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);
+
+
+/**
+ * struct cfg80211_auth_request - Authentication request data
+ *
+ * This structure provides information needed to complete IEEE 802.11
+ * authentication.
+ *
+ * @bss: The BSS to authenticate with, the callee must obtain a reference
+ *	to it if it needs to keep it.
+ * @auth_type: Authentication type (algorithm)
+ * @ie: Extra IEs to add to Authentication frame or %NULL
+ * @ie_len: Length of ie buffer in octets
+ * @key_len: length of WEP key for shared key authentication
+ * @key_idx: index of WEP key for shared key authentication
+ * @key: WEP key for shared key authentication
+ * @sae_data: Non-IE data to use with SAE or %NULL. This starts with
+ *	Authentication transaction sequence number field.
+ * @sae_data_len: Length of sae_data buffer in octets
+ */
+struct cfg80211_auth_request {
+	struct cfg80211_bss *bss;
+	const u8 *ie;
+	size_t ie_len;
+	enum nl80211_auth_type auth_type;
+	const u8 *key;
+	u8 key_len, key_idx;
+	const u8 *sae_data;
+	size_t sae_data_len;
+};
+
+/**
+ * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
+ *
+ * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
+ * @ASSOC_REQ_DISABLE_VHT:  Disable VHT
+ * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association
+ */
+enum cfg80211_assoc_req_flags {
+	ASSOC_REQ_DISABLE_HT		= BIT(0),
+	ASSOC_REQ_DISABLE_VHT		= BIT(1),
+	ASSOC_REQ_USE_RRM		= BIT(2),
+};
+
+/**
+ * struct cfg80211_assoc_request - (Re)Association request data
+ *
+ * This structure provides information needed to complete IEEE 802.11
+ * (re)association.
+ * @bss: The BSS to associate with. If the call is successful the driver is
+ *	given a reference that it must give back to cfg80211_send_rx_assoc()
+ *	or to cfg80211_assoc_timeout(). To ensure proper refcounting, new
+ *	association requests while already associating must be rejected.
+ * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
+ * @ie_len: Length of ie buffer in octets
+ * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
+ * @crypto: crypto settings
+ * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
+ * @flags:  See &enum cfg80211_assoc_req_flags
+ * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
+ *	will be used in ht_capa.  Un-supported values will be ignored.
+ * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ * @vht_capa: VHT capability override
+ * @vht_capa_mask: VHT capability mask indicating which fields to use
+ */
+struct cfg80211_assoc_request {
+	struct cfg80211_bss *bss;
+	const u8 *ie, *prev_bssid;
+	size_t ie_len;
+	struct cfg80211_crypto_settings crypto;
+	bool use_mfp;
+	u32 flags;
+	struct ieee80211_ht_cap ht_capa;
+	struct ieee80211_ht_cap ht_capa_mask;
+	struct ieee80211_vht_cap vht_capa, vht_capa_mask;
+};
+
+/**
+ * struct cfg80211_deauth_request - Deauthentication request data
+ *
+ * This structure provides information needed to complete IEEE 802.11
+ * deauthentication.
+ *
+ * @bssid: the BSSID of the BSS to deauthenticate from
+ * @ie: Extra IEs to add to Deauthentication frame or %NULL
+ * @ie_len: Length of ie buffer in octets
+ * @reason_code: The reason code for the deauthentication
+ * @local_state_change: if set, change local state only and
+ *	do not set a deauth frame
+ */
+struct cfg80211_deauth_request {
+	const u8 *bssid;
+	const u8 *ie;
+	size_t ie_len;
+	u16 reason_code;
+	bool local_state_change;
+};
+
+/**
+ * struct cfg80211_disassoc_request - Disassociation request data
+ *
+ * This structure provides information needed to complete IEEE 802.11
+ * disassocation.
+ *
+ * @bss: the BSS to disassociate from
+ * @ie: Extra IEs to add to Disassociation frame or %NULL
+ * @ie_len: Length of ie buffer in octets
+ * @reason_code: The reason code for the disassociation
+ * @local_state_change: This is a request for a local state only, i.e., no
+ *	Disassociation frame is to be transmitted.
+ */
+struct cfg80211_disassoc_request {
+	struct cfg80211_bss *bss;
+	const u8 *ie;
+	size_t ie_len;
+	u16 reason_code;
+	bool local_state_change;
+};
+
+/**
+ * struct cfg80211_ibss_params - IBSS parameters
+ *
+ * This structure defines the IBSS parameters for the join_ibss()
+ * method.
+ *
+ * @ssid: The SSID, will always be non-null.
+ * @ssid_len: The length of the SSID, will always be non-zero.
+ * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not
+ *	search for IBSSs with a different BSSID.
+ * @chandef: defines the channel to use if no other IBSS to join can be found
+ * @channel_fixed: The channel should be fixed -- do not search for
+ *	IBSSs to join on other channels.
+ * @ie: information element(s) to include in the beacon
+ * @ie_len: length of that
+ * @beacon_interval: beacon interval to use
+ * @privacy: this is a protected network, keys will be configured
+ *	after joining
+ * @control_port: whether user space controls IEEE 802.1X port, i.e.,
+ *	sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
+ *	required to assume that the port is unauthorized until authorized by
+ *	user space. Otherwise, port is marked authorized by default.
+ * @userspace_handles_dfs: whether user space controls DFS operation, i.e.
+ *	changes the channel when a radar is detected. This is required
+ *	to operate on DFS channels.
+ * @basic_rates: bitmap of basic rates to use when creating the IBSS
+ * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
+ * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
+ *	will be used in ht_capa.  Un-supported values will be ignored.
+ * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ */
+struct cfg80211_ibss_params {
+	const u8 *ssid;
+	const u8 *bssid;
+	struct cfg80211_chan_def chandef;
+	const u8 *ie;
+	u8 ssid_len, ie_len;
+	u16 beacon_interval;
+	u32 basic_rates;
+	bool channel_fixed;
+	bool privacy;
+	bool control_port;
+	bool userspace_handles_dfs;
+	int mcast_rate[IEEE80211_NUM_BANDS];
+	struct ieee80211_ht_cap ht_capa;
+	struct ieee80211_ht_cap ht_capa_mask;
+};
+
+/**
+ * struct cfg80211_connect_params - Connection parameters
+ *
+ * This structure provides information needed to complete IEEE 802.11
+ * authentication and association.
+ *
+ * @channel: The channel to use or %NULL if not specified (auto-select based
+ *	on scan results)
+ * @channel_hint: The channel of the recommended BSS for initial connection or
+ *	%NULL if not specified
+ * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan
+ *	results)
+ * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or
+ *	%NULL if not specified. Unlike the @bssid parameter, the driver is
+ *	allowed to ignore this @bssid_hint if it has knowledge of a better BSS
+ *	to use.
+ * @ssid: SSID
+ * @ssid_len: Length of ssid in octets
+ * @auth_type: Authentication type (algorithm)
+ * @ie: IEs for association request
+ * @ie_len: Length of assoc_ie in octets
+ * @privacy: indicates whether privacy-enabled APs should be used
+ * @mfp: indicate whether management frame protection is used
+ * @crypto: crypto settings
+ * @key_len: length of WEP key for shared key authentication
+ * @key_idx: index of WEP key for shared key authentication
+ * @key: WEP key for shared key authentication
+ * @flags:  See &enum cfg80211_assoc_req_flags
+ * @bg_scan_period:  Background scan period in seconds
+ *	or -1 to indicate that default value is to be used.
+ * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
+ *	will be used in ht_capa.  Un-supported values will be ignored.
+ * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ * @vht_capa:  VHT Capability overrides
+ * @vht_capa_mask: The bits of vht_capa which are to be used.
+ */
+struct cfg80211_connect_params {
+	struct ieee80211_channel *channel;
+	struct ieee80211_channel *channel_hint;
+	const u8 *bssid;
+	const u8 *bssid_hint;
+	const u8 *ssid;
+	size_t ssid_len;
+	enum nl80211_auth_type auth_type;
+	const u8 *ie;
+	size_t ie_len;
+	bool privacy;
+	enum nl80211_mfp mfp;
+	struct cfg80211_crypto_settings crypto;
+	const u8 *key;
+	u8 key_len, key_idx;
+	u32 flags;
+	int bg_scan_period;
+	struct ieee80211_ht_cap ht_capa;
+	struct ieee80211_ht_cap ht_capa_mask;
+	struct ieee80211_vht_cap vht_capa;
+	struct ieee80211_vht_cap vht_capa_mask;
+};
+
+/**
+ * enum wiphy_params_flags - set_wiphy_params bitfield values
+ * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed
+ * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed
+ * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed
+ * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed
+ * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed
+ * @WIPHY_PARAM_DYN_ACK: dynack has been enabled
+ */
+enum wiphy_params_flags {
+	WIPHY_PARAM_RETRY_SHORT		= 1 << 0,
+	WIPHY_PARAM_RETRY_LONG		= 1 << 1,
+	WIPHY_PARAM_FRAG_THRESHOLD	= 1 << 2,
+	WIPHY_PARAM_RTS_THRESHOLD	= 1 << 3,
+	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
+	WIPHY_PARAM_DYN_ACK		= 1 << 5,
+};
+
+/*
+ * cfg80211_bitrate_mask - masks for bitrate control
+ */
+struct cfg80211_bitrate_mask {
+	struct {
+		u32 legacy;
+		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
+		u16 vht_mcs[NL80211_VHT_NSS_MAX];
+		enum nl80211_txrate_gi gi;
+	} control[IEEE80211_NUM_BANDS];
+};
+/**
+ * struct cfg80211_pmksa - PMK Security Association
+ *
+ * This structure is passed to the set/del_pmksa() method for PMKSA
+ * caching.
+ *
+ * @bssid: The AP's BSSID.
+ * @pmkid: The PMK material itself.
+ */
+struct cfg80211_pmksa {
+	const u8 *bssid;
+	const u8 *pmkid;
+};
+
+/**
+ * struct cfg80211_pkt_pattern - packet pattern
+ * @mask: bitmask where to match pattern and where to ignore bytes,
+ *	one bit per byte, in same format as nl80211
+ * @pattern: bytes to match where bitmask is 1
+ * @pattern_len: length of pattern (in bytes)
+ * @pkt_offset: packet offset (in bytes)
+ *
+ * Internal note: @mask and @pattern are allocated in one chunk of
+ * memory, free @mask only!
+ */
+struct cfg80211_pkt_pattern {
+	const u8 *mask, *pattern;
+	int pattern_len;
+	int pkt_offset;
+};
+
+/**
+ * struct cfg80211_wowlan_tcp - TCP connection parameters
+ *
+ * @sock: (internal) socket for source port allocation
+ * @src: source IP address
+ * @dst: destination IP address
+ * @dst_mac: destination MAC address
+ * @src_port: source port
+ * @dst_port: destination port
+ * @payload_len: data payload length
+ * @payload: data payload buffer
+ * @payload_seq: payload sequence stamping configuration
+ * @data_interval: interval at which to send data packets
+ * @wake_len: wakeup payload match length
+ * @wake_data: wakeup payload match data
+ * @wake_mask: wakeup payload match mask
+ * @tokens_size: length of the tokens buffer
+ * @payload_tok: payload token usage configuration
+ */
+struct cfg80211_wowlan_tcp {
+	struct socket *sock;
+	__be32 src, dst;
+	u16 src_port, dst_port;
+	u8 dst_mac[ETH_ALEN];
+	int payload_len;
+	const u8 *payload;
+	struct nl80211_wowlan_tcp_data_seq payload_seq;
+	u32 data_interval;
+	u32 wake_len;
+	const u8 *wake_data, *wake_mask;
+	u32 tokens_size;
+	/* must be last, variable member */
+	struct nl80211_wowlan_tcp_data_token payload_tok;
+};
+
+/**
+ * struct cfg80211_wowlan - Wake on Wireless-LAN support info
+ *
+ * This structure defines the enabled WoWLAN triggers for the device.
+ * @any: wake up on any activity -- special trigger if device continues
+ *	operating as normal during suspend
+ * @disconnect: wake up if getting disconnected
+ * @magic_pkt: wake up on receiving magic packet
+ * @patterns: wake up on receiving packet matching a pattern
+ * @n_patterns: number of patterns
+ * @gtk_rekey_failure: wake up on GTK rekey failure
+ * @eap_identity_req: wake up on EAP identity request packet
+ * @four_way_handshake: wake up on 4-way handshake
+ * @rfkill_release: wake up when rfkill is released
+ * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
+ *	NULL if not configured.
+ * @nd_config: configuration for the scan to be used for net detect wake.
+ */
+struct cfg80211_wowlan {
+	bool any, disconnect, magic_pkt, gtk_rekey_failure,
+	     eap_identity_req, four_way_handshake,
+	     rfkill_release;
+	struct cfg80211_pkt_pattern *patterns;
+	struct cfg80211_wowlan_tcp *tcp;
+	int n_patterns;
+	struct cfg80211_sched_scan_request *nd_config;
+};
+
+/**
+ * struct cfg80211_coalesce_rules - Coalesce rule parameters
+ *
+ * This structure defines coalesce rule for the device.
+ * @delay: maximum coalescing delay in msecs.
+ * @condition: condition for packet coalescence.
+ *	see &enum nl80211_coalesce_condition.
+ * @patterns: array of packet patterns
+ * @n_patterns: number of patterns
+ */
+struct cfg80211_coalesce_rules {
+	int delay;
+	enum nl80211_coalesce_condition condition;
+	struct cfg80211_pkt_pattern *patterns;
+	int n_patterns;
+};
+
+/**
+ * struct cfg80211_coalesce - Packet coalescing settings
+ *
+ * This structure defines coalescing settings.
+ * @rules: array of coalesce rules
+ * @n_rules: number of rules
+ */
+struct cfg80211_coalesce {
+	struct cfg80211_coalesce_rules *rules;
+	int n_rules;
+};
+
+/**
+ * struct cfg80211_wowlan_nd_match - information about the match
+ *
+ * @ssid: SSID of the match that triggered the wake up
+ * @n_channels: Number of channels where the match occurred.  This
+ *	value may be zero if the driver can't report the channels.
+ * @channels: center frequencies of the channels where a match
+ *	occurred (in MHz)
+ */
+struct cfg80211_wowlan_nd_match {
+	struct cfg80211_ssid ssid;
+	int n_channels;
+	u32 channels[];
+};
+
+/**
+ * struct cfg80211_wowlan_nd_info - net detect wake up information
+ *
+ * @n_matches: Number of match information instances provided in
+ *	@matches.  This value may be zero if the driver can't provide
+ *	match information.
+ * @matches: Array of pointers to matches containing information about
+ *	the matches that triggered the wake up.
+ */
+struct cfg80211_wowlan_nd_info {
+	int n_matches;
+	struct cfg80211_wowlan_nd_match *matches[];
+};
+
+/**
+ * struct cfg80211_wowlan_wakeup - wakeup report
+ * @disconnect: woke up by getting disconnected
+ * @magic_pkt: woke up by receiving magic packet
+ * @gtk_rekey_failure: woke up by GTK rekey failure
+ * @eap_identity_req: woke up by EAP identity request packet
+ * @four_way_handshake: woke up by 4-way handshake
+ * @rfkill_release: woke up by rfkill being released
+ * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern
+ * @packet_present_len: copied wakeup packet data
+ * @packet_len: original wakeup packet length
+ * @packet: The packet causing the wakeup, if any.
+ * @packet_80211:  For pattern match, magic packet and other data
+ *	frame triggers an 802.3 frame should be reported, for
+ *	disconnect due to deauth 802.11 frame. This indicates which
+ *	it is.
+ * @tcp_match: TCP wakeup packet received
+ * @tcp_connlost: TCP connection lost or failed to establish
+ * @tcp_nomoretokens: TCP data ran out of tokens
+ * @net_detect: if not %NULL, woke up because of net detect
+ */
+struct cfg80211_wowlan_wakeup {
+	bool disconnect, magic_pkt, gtk_rekey_failure,
+	     eap_identity_req, four_way_handshake,
+	     rfkill_release, packet_80211,
+	     tcp_match, tcp_connlost, tcp_nomoretokens;
+	s32 pattern_idx;
+	u32 packet_present_len, packet_len;
+	const void *packet;
+	struct cfg80211_wowlan_nd_info *net_detect;
+};
+
+/**
+ * struct cfg80211_gtk_rekey_data - rekey data
+ * @kek: key encryption key (NL80211_KEK_LEN bytes)
+ * @kck: key confirmation key (NL80211_KCK_LEN bytes)
+ * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes)
+ */
+struct cfg80211_gtk_rekey_data {
+	const u8 *kek, *kck, *replay_ctr;
+};
+
+/**
+ * struct cfg80211_update_ft_ies_params - FT IE Information
+ *
+ * This structure provides information needed to update the fast transition IE
+ *
+ * @md: The Mobility Domain ID, 2 Octet value
+ * @ie: Fast Transition IEs
+ * @ie_len: Length of ft_ie in octets
+ */
+struct cfg80211_update_ft_ies_params {
+	u16 md;
+	const u8 *ie;
+	size_t ie_len;
+};
+
+/**
+ * struct cfg80211_mgmt_tx_params - mgmt tx parameters
+ *
+ * This structure provides information needed to transmit a mgmt frame
+ *
+ * @chan: channel to use
+ * @offchan: indicates wether off channel operation is required
+ * @wait: duration for ROC
+ * @buf: buffer to transmit
+ * @len: buffer length
+ * @no_cck: don't use cck rates for this frame
+ * @dont_wait_for_ack: tells the low level not to wait for an ack
+ * @n_csa_offsets: length of csa_offsets array
+ * @csa_offsets: array of all the csa offsets in the frame
+ */
+struct cfg80211_mgmt_tx_params {
+	struct ieee80211_channel *chan;
+	bool offchan;
+	unsigned int wait;
+	const u8 *buf;
+	size_t len;
+	bool no_cck;
+	bool dont_wait_for_ack;
+	int n_csa_offsets;
+	const u16 *csa_offsets;
+};
+
+/**
+ * struct cfg80211_dscp_exception - DSCP exception
+ *
+ * @dscp: DSCP value that does not adhere to the user priority range definition
+ * @up: user priority value to which the corresponding DSCP value belongs
+ */
+struct cfg80211_dscp_exception {
+	u8 dscp;
+	u8 up;
+};
+
+/**
+ * struct cfg80211_dscp_range - DSCP range definition for user priority
+ *
+ * @low: lowest DSCP value of this user priority range, inclusive
+ * @high: highest DSCP value of this user priority range, inclusive
+ */
+struct cfg80211_dscp_range {
+	u8 low;
+	u8 high;
+};
+
+/* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */
+#define IEEE80211_QOS_MAP_MAX_EX	21
+#define IEEE80211_QOS_MAP_LEN_MIN	16
+#define IEEE80211_QOS_MAP_LEN_MAX \
+	(IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX)
+
+/**
+ * struct cfg80211_qos_map - QoS Map Information
+ *
+ * This struct defines the Interworking QoS map setting for DSCP values
+ *
+ * @num_des: number of DSCP exceptions (0..21)
+ * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from
+ *	the user priority DSCP range definition
+ * @up: DSCP range definition for a particular user priority
+ */
+struct cfg80211_qos_map {
+	u8 num_des;
+	struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX];
+	struct cfg80211_dscp_range up[8];
+};
+
+/**
+ * struct cfg80211_ops - backend description for wireless configuration
+ *
+ * This struct is registered by fullmac card drivers and/or wireless stacks
+ * in order to handle configuration requests on their interfaces.
+ *
+ * All callbacks except where otherwise noted should return 0
+ * on success or a negative error code.
+ *
+ * All operations are currently invoked under rtnl for consistency with the
+ * wireless extensions but this is subject to reevaluation as soon as this
+ * code is used more widely and we have a first user without wext.
+ *
+ * @suspend: wiphy device needs to be suspended. The variable @wow will
+ *	be %NULL or contain the enabled Wake-on-Wireless triggers that are
+ *	configured for the device.
+ * @resume: wiphy device needs to be resumed
+ * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback
+ *	to call device_set_wakeup_enable() to enable/disable wakeup from
+ *	the device.
+ *
+ * @add_virtual_intf: create a new virtual interface with the given name,
+ *	must set the struct wireless_dev's iftype. Beware: You must create
+ *	the new netdev in the wiphy's network namespace! Returns the struct
+ *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
+ *	also set the address member in the wdev.
+ *
+ * @del_virtual_intf: remove the virtual interface
+ *
+ * @change_virtual_intf: change type/configuration of virtual interface,
+ *	keep the struct wireless_dev's iftype updated.
+ *
+ * @add_key: add a key with the given parameters. @mac_addr will be %NULL
+ *	when adding a group key.
+ *
+ * @get_key: get information about the key with the given parameters.
+ *	@mac_addr will be %NULL when requesting information for a group
+ *	key. All pointers given to the @callback function need not be valid
+ *	after it returns. This function should return an error if it is
+ *	not possible to retrieve the key, -ENOENT if it doesn't exist.
+ *
+ * @del_key: remove a key given the @mac_addr (%NULL for a group key)
+ *	and @key_index, return -ENOENT if the key doesn't exist.
+ *
+ * @set_default_key: set the default key on an interface
+ *
+ * @set_default_mgmt_key: set the default management frame key on an interface
+ *
+ * @set_rekey_data: give the data necessary for GTK rekeying to the driver
+ *
+ * @start_ap: Start acting in AP mode defined by the parameters.
+ * @change_beacon: Change the beacon parameters for an access point mode
+ *	interface. This should reject the call when AP mode wasn't started.
+ * @stop_ap: Stop being an AP, including stopping beaconing.
+ *
+ * @add_station: Add a new station.
+ * @del_station: Remove a station
+ * @change_station: Modify a given station. Note that flags changes are not much
+ *	validated in cfg80211, in particular the auth/assoc/authorized flags
+ *	might come to the driver in invalid combinations -- make sure to check
+ *	them, also against the existing state! Drivers must call
+ *	cfg80211_check_station_change() to validate the information.
+ * @get_station: get station information for the station identified by @mac
+ * @dump_station: dump station callback -- resume dump at index @idx
+ *
+ * @add_mpath: add a fixed mesh path
+ * @del_mpath: delete a given mesh path
+ * @change_mpath: change a given mesh path
+ * @get_mpath: get a mesh path for the given parameters
+ * @dump_mpath: dump mesh path callback -- resume dump at index @idx
+ * @get_mpp: get a mesh proxy path for the given parameters
+ * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx
+ * @join_mesh: join the mesh network with the specified parameters
+ *	(invoked with the wireless_dev mutex held)
+ * @leave_mesh: leave the current mesh network
+ *	(invoked with the wireless_dev mutex held)
+ *
+ * @get_mesh_config: Get the current mesh configuration
+ *
+ * @update_mesh_config: Update mesh parameters on a running mesh.
+ *	The mask is a bitfield which tells us which parameters to
+ *	set, and which to leave alone.
+ *
+ * @change_bss: Modify parameters for a given BSS.
+ *
+ * @set_txq_params: Set TX queue parameters
+ *
+ * @libertas_set_mesh_channel: Only for backward compatibility for libertas,
+ *	as it doesn't implement join_mesh and needs to set the channel to
+ *	join the mesh instead.
+ *
+ * @set_monitor_channel: Set the monitor mode channel for the device. If other
+ *	interfaces are active this callback should reject the configuration.
+ *	If no interfaces are active or the device is down, the channel should
+ *	be stored for when a monitor interface becomes active.
+ *
+ * @scan: Request to do a scan. If returning zero, the scan request is given
+ *	the driver, and will be valid until passed to cfg80211_scan_done().
+ *	For scan results, call cfg80211_inform_bss(); you can call this outside
+ *	the scan/scan_done bracket too.
+ *
+ * @auth: Request to authenticate with the specified peer
+ *	(invoked with the wireless_dev mutex held)
+ * @assoc: Request to (re)associate with the specified peer
+ *	(invoked with the wireless_dev mutex held)
+ * @deauth: Request to deauthenticate from the specified peer
+ *	(invoked with the wireless_dev mutex held)
+ * @disassoc: Request to disassociate from the specified peer
+ *	(invoked with the wireless_dev mutex held)
+ *
+ * @connect: Connect to the ESS with the specified parameters. When connected,
+ *	call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS.
+ *	If the connection fails for some reason, call cfg80211_connect_result()
+ *	with the status from the AP.
+ *	(invoked with the wireless_dev mutex held)
+ * @disconnect: Disconnect from the BSS/ESS.
+ *	(invoked with the wireless_dev mutex held)
+ *
+ * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
+ *	cfg80211_ibss_joined(), also call that function when changing BSSID due
+ *	to a merge.
+ *	(invoked with the wireless_dev mutex held)
+ * @leave_ibss: Leave the IBSS.
+ *	(invoked with the wireless_dev mutex held)
+ *
+ * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
+ *	MESH mode)
+ *
+ * @set_wiphy_params: Notify that wiphy parameters have changed;
+ *	@changed bitfield (see &enum wiphy_params_flags) describes which values
+ *	have changed. The actual parameter values are available in
+ *	struct wiphy. If returning an error, no value should be changed.
+ *
+ * @set_tx_power: set the transmit power according to the parameters,
+ *	the power passed is in mBm, to get dBm use MBM_TO_DBM(). The
+ *	wdev may be %NULL if power was set for the wiphy, and will
+ *	always be %NULL unless the driver supports per-vif TX power
+ *	(as advertised by the nl80211 feature flag.)
+ * @get_tx_power: store the current TX power into the dbm variable;
+ *	return 0 if successful
+ *
+ * @set_wds_peer: set the WDS peer for a WDS interface
+ *
+ * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
+ *	functions to adjust rfkill hw state
+ *
+ * @dump_survey: get site survey information.
+ *
+ * @remain_on_channel: Request the driver to remain awake on the specified
+ *	channel for the specified duration to complete an off-channel
+ *	operation (e.g., public action frame exchange). When the driver is
+ *	ready on the requested channel, it must indicate this with an event
+ *	notification by calling cfg80211_ready_on_channel().
+ * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation.
+ *	This allows the operation to be terminated prior to timeout based on
+ *	the duration value.
+ * @mgmt_tx: Transmit a management frame.
+ * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
+ *	frame on another channel
+ *
+ * @testmode_cmd: run a test mode command; @wdev may be %NULL
+ * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be
+ *	used by the function, but 0 and 1 must not be touched. Additionally,
+ *	return error codes other than -ENOBUFS and -ENOENT will terminate the
+ *	dump and return to userspace with an error, so be careful. If any data
+ *	was passed in from userspace then the data/len arguments will be present
+ *	and point to the data contained in %NL80211_ATTR_TESTDATA.
+ *
+ * @set_bitrate_mask: set the bitrate mask configuration
+ *
+ * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac
+ *	devices running firmwares capable of generating the (re) association
+ *	RSN IE. It allows for faster roaming between WPA2 BSSIDs.
+ * @del_pmksa: Delete a cached PMKID.
+ * @flush_pmksa: Flush all cached PMKIDs.
+ * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
+ *	allows the driver to adjust the dynamic ps timeout value.
+ * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
+ * @set_cqm_txe_config: Configure connection quality monitor TX error
+ *	thresholds.
+ * @sched_scan_start: Tell the driver to start a scheduled scan.
+ * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This
+ *	call must stop the scheduled scan and be ready for starting a new one
+ *	before it returns, i.e. @sched_scan_start may be called immediately
+ *	after that again and should not fail in that case. The driver should
+ *	not call cfg80211_sched_scan_stopped() for a requested stop (when this
+ *	method returns 0.)
+ *
+ * @mgmt_frame_register: Notify driver that a management frame type was
+ *	registered. Note that this callback may not sleep, and cannot run
+ *	concurrently with itself.
+ *
+ * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device.
+ *	Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may
+ *	reject TX/RX mask combinations they cannot support by returning -EINVAL
+ *	(also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX).
+ *
+ * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant).
+ *
+ * @tdls_mgmt: Transmit a TDLS management frame.
+ * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
+ *
+ * @probe_client: probe an associated client, must return a cookie that it
+ *	later passes to cfg80211_probe_status().
+ *
+ * @set_noack_map: Set the NoAck Map for the TIDs.
+ *
+ * @get_channel: Get the current operating channel for the virtual interface.
+ *	For monitor interfaces, it should return %NULL unless there's a single
+ *	current monitoring channel.
+ *
+ * @start_p2p_device: Start the given P2P device.
+ * @stop_p2p_device: Stop the given P2P device.
+ *
+ * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode.
+ *	Parameters include ACL policy, an array of MAC address of stations
+ *	and the number of MAC addresses. If there is already a list in driver
+ *	this new list replaces the existing one. Driver has to clear its ACL
+ *	when number of MAC addresses entries is passed as 0. Drivers which
+ *	advertise the support for MAC based ACL have to implement this callback.
+ *
+ * @start_radar_detection: Start radar detection in the driver.
+ *
+ * @update_ft_ies: Provide updated Fast BSS Transition information to the
+ *	driver. If the SME is in the driver/firmware, this information can be
+ *	used in building Authentication and Reassociation Request frames.
+ *
+ * @crit_proto_start: Indicates a critical protocol needs more link reliability
+ *	for a given duration (milliseconds). The protocol is provided so the
+ *	driver can take the most appropriate actions.
+ * @crit_proto_stop: Indicates critical protocol no longer needs increased link
+ *	reliability. This operation can not fail.
+ * @set_coalesce: Set coalesce parameters.
+ *
+ * @channel_switch: initiate channel-switch procedure (with CSA). Driver is
+ *	responsible for veryfing if the switch is possible. Since this is
+ *	inherently tricky driver may decide to disconnect an interface later
+ *	with cfg80211_stop_iface(). This doesn't mean driver can accept
+ *	everything. It should do it's best to verify requests and reject them
+ *	as soon as possible.
+ *
+ * @set_qos_map: Set QoS mapping information to the driver
+ *
+ * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the
+ *	given interface This is used e.g. for dynamic HT 20/40 MHz channel width
+ *	changes during the lifetime of the BSS.
+ *
+ * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device
+ *	with the given parameters; action frame exchange has been handled by
+ *	userspace so this just has to modify the TX path to take the TS into
+ *	account.
+ *	If the admitted time is 0 just validate the parameters to make sure
+ *	the session can be created at all; it is valid to just always return
+ *	success for that but that may result in inefficient behaviour (handshake
+ *	with the peer followed by immediate teardown when the addition is later
+ *	rejected)
+ * @del_tx_ts: remove an existing TX TS
+ *
+ * @join_ocb: join the OCB network with the specified parameters
+ *	(invoked with the wireless_dev mutex held)
+ * @leave_ocb: leave the current OCB network
+ *	(invoked with the wireless_dev mutex held)
+ *
+ * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
+ *	is responsible for continually initiating channel-switching operations
+ *	and returning to the base channel for communication with the AP.
+ * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
+ *	peers must be on the base channel when the call completes.
+ */
+struct cfg80211_ops {
+	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
+	int	(*resume)(struct wiphy *wiphy);
+	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
+
+	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
+						  const char *name,
+						  unsigned char name_assign_type,
+						  enum nl80211_iftype type,
+						  u32 *flags,
+						  struct vif_params *params);
+	int	(*del_virtual_intf)(struct wiphy *wiphy,
+				    struct wireless_dev *wdev);
+	int	(*change_virtual_intf)(struct wiphy *wiphy,
+				       struct net_device *dev,
+				       enum nl80211_iftype type, u32 *flags,
+				       struct vif_params *params);
+
+	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
+			   u8 key_index, bool pairwise, const u8 *mac_addr,
+			   struct key_params *params);
+	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
+			   u8 key_index, bool pairwise, const u8 *mac_addr,
+			   void *cookie,
+			   void (*callback)(void *cookie, struct key_params*));
+	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
+			   u8 key_index, bool pairwise, const u8 *mac_addr);
+	int	(*set_default_key)(struct wiphy *wiphy,
+				   struct net_device *netdev,
+				   u8 key_index, bool unicast, bool multicast);
+	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
+					struct net_device *netdev,
+					u8 key_index);
+
+	int	(*start_ap)(struct wiphy *wiphy, struct net_device *dev,
+			    struct cfg80211_ap_settings *settings);
+	int	(*change_beacon)(struct wiphy *wiphy, struct net_device *dev,
+				 struct cfg80211_beacon_data *info);
+	int	(*stop_ap)(struct wiphy *wiphy, struct net_device *dev);
+
+
+	int	(*add_station)(struct wiphy *wiphy, struct net_device *dev,
+			       const u8 *mac,
+			       struct station_parameters *params);
+	int	(*del_station)(struct wiphy *wiphy, struct net_device *dev,
+			       struct station_del_parameters *params);
+	int	(*change_station)(struct wiphy *wiphy, struct net_device *dev,
+				  const u8 *mac,
+				  struct station_parameters *params);
+	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
+			       const u8 *mac, struct station_info *sinfo);
+	int	(*dump_station)(struct wiphy *wiphy, struct net_device *dev,
+				int idx, u8 *mac, struct station_info *sinfo);
+
+	int	(*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
+			       const u8 *dst, const u8 *next_hop);
+	int	(*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
+			       const u8 *dst);
+	int	(*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
+				  const u8 *dst, const u8 *next_hop);
+	int	(*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
+			     u8 *dst, u8 *next_hop, struct mpath_info *pinfo);
+	int	(*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
+			      int idx, u8 *dst, u8 *next_hop,
+			      struct mpath_info *pinfo);
+	int	(*get_mpp)(struct wiphy *wiphy, struct net_device *dev,
+			   u8 *dst, u8 *mpp, struct mpath_info *pinfo);
+	int	(*dump_mpp)(struct wiphy *wiphy, struct net_device *dev,
+			    int idx, u8 *dst, u8 *mpp,
+			    struct mpath_info *pinfo);
+	int	(*get_mesh_config)(struct wiphy *wiphy,
+				struct net_device *dev,
+				struct mesh_config *conf);
+	int	(*update_mesh_config)(struct wiphy *wiphy,
+				      struct net_device *dev, u32 mask,
+				      const struct mesh_config *nconf);
+	int	(*join_mesh)(struct wiphy *wiphy, struct net_device *dev,
+			     const struct mesh_config *conf,
+			     const struct mesh_setup *setup);
+	int	(*leave_mesh)(struct wiphy *wiphy, struct net_device *dev);
+
+	int	(*join_ocb)(struct wiphy *wiphy, struct net_device *dev,
+			    struct ocb_setup *setup);
+	int	(*leave_ocb)(struct wiphy *wiphy, struct net_device *dev);
+
+	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
+			      struct bss_parameters *params);
+
+	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
+				  struct ieee80211_txq_params *params);
+
+	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
+					     struct net_device *dev,
+					     struct ieee80211_channel *chan);
+
+	int	(*set_monitor_channel)(struct wiphy *wiphy,
+				       struct cfg80211_chan_def *chandef);
+
+	int	(*scan)(struct wiphy *wiphy,
+			struct cfg80211_scan_request *request);
+
+	int	(*auth)(struct wiphy *wiphy, struct net_device *dev,
+			struct cfg80211_auth_request *req);
+	int	(*assoc)(struct wiphy *wiphy, struct net_device *dev,
+			 struct cfg80211_assoc_request *req);
+	int	(*deauth)(struct wiphy *wiphy, struct net_device *dev,
+			  struct cfg80211_deauth_request *req);
+	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
+			    struct cfg80211_disassoc_request *req);
+
+	int	(*connect)(struct wiphy *wiphy, struct net_device *dev,
+			   struct cfg80211_connect_params *sme);
+	int	(*disconnect)(struct wiphy *wiphy, struct net_device *dev,
+			      u16 reason_code);
+
+	int	(*join_ibss)(struct wiphy *wiphy, struct net_device *dev,
+			     struct cfg80211_ibss_params *params);
+	int	(*leave_ibss)(struct wiphy *wiphy, struct net_device *dev);
+
+	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
+				  int rate[IEEE80211_NUM_BANDS]);
+
+	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
+
+	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
+				enum nl80211_tx_power_setting type, int mbm);
+	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
+				int *dbm);
+
+	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
+				const u8 *addr);
+
+	void	(*rfkill_poll)(struct wiphy *wiphy);
+
+#ifdef CONFIG_NL80211_TESTMODE
+	int	(*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev,
+				void *data, int len);
+	int	(*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb,
+				 struct netlink_callback *cb,
+				 void *data, int len);
+#endif
+
+	int	(*set_bitrate_mask)(struct wiphy *wiphy,
+				    struct net_device *dev,
+				    const u8 *peer,
+				    const struct cfg80211_bitrate_mask *mask);
+
+	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
+			int idx, struct survey_info *info);
+
+	int	(*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
+			     struct cfg80211_pmksa *pmksa);
+	int	(*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
+			     struct cfg80211_pmksa *pmksa);
+	int	(*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev);
+
+	int	(*remain_on_channel)(struct wiphy *wiphy,
+				     struct wireless_dev *wdev,
+				     struct ieee80211_channel *chan,
+				     unsigned int duration,
+				     u64 *cookie);
+	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
+					    struct wireless_dev *wdev,
+					    u64 cookie);
+
+	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
+			   struct cfg80211_mgmt_tx_params *params,
+			   u64 *cookie);
+	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
+				       struct wireless_dev *wdev,
+				       u64 cookie);
+
+	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
+				  bool enabled, int timeout);
+
+	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
+				       struct net_device *dev,
+				       s32 rssi_thold, u32 rssi_hyst);
+
+	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
+				      struct net_device *dev,
+				      u32 rate, u32 pkts, u32 intvl);
+
+	void	(*mgmt_frame_register)(struct wiphy *wiphy,
+				       struct wireless_dev *wdev,
+				       u16 frame_type, bool reg);
+
+	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
+	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
+
+	int	(*sched_scan_start)(struct wiphy *wiphy,
+				struct net_device *dev,
+				struct cfg80211_sched_scan_request *request);
+	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
+
+	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
+				  struct cfg80211_gtk_rekey_data *data);
+
+	int	(*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
+			     const u8 *peer, u8 action_code,  u8 dialog_token,
+			     u16 status_code, u32 peer_capability,
+			     bool initiator, const u8 *buf, size_t len);
+	int	(*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
+			     const u8 *peer, enum nl80211_tdls_operation oper);
+
+	int	(*probe_client)(struct wiphy *wiphy, struct net_device *dev,
+				const u8 *peer, u64 *cookie);
+
+	int	(*set_noack_map)(struct wiphy *wiphy,
+				  struct net_device *dev,
+				  u16 noack_map);
+
+	int	(*get_channel)(struct wiphy *wiphy,
+			       struct wireless_dev *wdev,
+			       struct cfg80211_chan_def *chandef);
+
+	int	(*start_p2p_device)(struct wiphy *wiphy,
+				    struct wireless_dev *wdev);
+	void	(*stop_p2p_device)(struct wiphy *wiphy,
+				   struct wireless_dev *wdev);
+
+	int	(*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
+			       const struct cfg80211_acl_data *params);
+
+	int	(*start_radar_detection)(struct wiphy *wiphy,
+					 struct net_device *dev,
+					 struct cfg80211_chan_def *chandef,
+					 u32 cac_time_ms);
+	int	(*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
+				 struct cfg80211_update_ft_ies_params *ftie);
+	int	(*crit_proto_start)(struct wiphy *wiphy,
+				    struct wireless_dev *wdev,
+				    enum nl80211_crit_proto_id protocol,
+				    u16 duration);
+	void	(*crit_proto_stop)(struct wiphy *wiphy,
+				   struct wireless_dev *wdev);
+	int	(*set_coalesce)(struct wiphy *wiphy,
+				struct cfg80211_coalesce *coalesce);
+
+	int	(*channel_switch)(struct wiphy *wiphy,
+				  struct net_device *dev,
+				  struct cfg80211_csa_settings *params);
+
+	int     (*set_qos_map)(struct wiphy *wiphy,
+			       struct net_device *dev,
+			       struct cfg80211_qos_map *qos_map);
+
+	int	(*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
+				    struct cfg80211_chan_def *chandef);
+
+	int	(*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
+			     u8 tsid, const u8 *peer, u8 user_prio,
+			     u16 admitted_time);
+	int	(*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
+			     u8 tsid, const u8 *peer);
+
+	int	(*tdls_channel_switch)(struct wiphy *wiphy,
+				       struct net_device *dev,
+				       const u8 *addr, u8 oper_class,
+				       struct cfg80211_chan_def *chandef);
+	void	(*tdls_cancel_channel_switch)(struct wiphy *wiphy,
+					      struct net_device *dev,
+					      const u8 *addr);
+};
+
+/*
+ * wireless hardware and networking interfaces structures
+ * and registration/helper functions
+ */
+
+/**
+ * enum wiphy_flags - wiphy capability flags
+ *
+ * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this
+ *	wiphy at all
+ * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled
+ *	by default -- this flag will be set depending on the kernel's default
+ *	on wiphy_new(), but can be changed by the driver if it has a good
+ *	reason to override the default
+ * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station
+ *	on a VLAN interface)
+ * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station
+ * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
+ *	control port protocol ethertype. The device also honours the
+ *	control_port_no_encrypt flag.
+ * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
+ * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
+ *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
+ * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
+ * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
+ *	firmware.
+ * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
+ * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation.
+ * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z)
+ *	link setup/discovery operations internally. Setup, discovery and
+ *	teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT
+ *	command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
+ *	used for asking the driver/firmware to perform a TDLS operation.
+ * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
+ * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes
+ *	when there are virtual interfaces in AP mode by calling
+ *	cfg80211_report_obss_beacon().
+ * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
+ *	responds to probe-requests in hardware.
+ * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
+ * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
+ * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
+ * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in
+ *	beaconing mode (AP, IBSS, Mesh, ...).
+ */
+enum wiphy_flags {
+	/* use hole at 0 */
+	/* use hole at 1 */
+	/* use hole at 2 */
+	WIPHY_FLAG_NETNS_OK			= BIT(3),
+	WIPHY_FLAG_PS_ON_BY_DEFAULT		= BIT(4),
+	WIPHY_FLAG_4ADDR_AP			= BIT(5),
+	WIPHY_FLAG_4ADDR_STATION		= BIT(6),
+	WIPHY_FLAG_CONTROL_PORT_PROTOCOL	= BIT(7),
+	WIPHY_FLAG_IBSS_RSN			= BIT(8),
+	WIPHY_FLAG_MESH_AUTH			= BIT(10),
+	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
+	/* use hole at 12 */
+	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
+	WIPHY_FLAG_AP_UAPSD			= BIT(14),
+	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
+	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
+	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
+	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
+	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
+	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
+	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
+	WIPHY_FLAG_SUPPORTS_5_10_MHZ		= BIT(22),
+	WIPHY_FLAG_HAS_CHANNEL_SWITCH		= BIT(23),
+};
+
+/**
+ * struct ieee80211_iface_limit - limit on certain interface types
+ * @max: maximum number of interfaces of these types
+ * @types: interface types (bits)
+ */
+struct ieee80211_iface_limit {
+	u16 max;
+	u16 types;
+};
+
+/**
+ * struct ieee80211_iface_combination - possible interface combination
+ * @limits: limits for the given interface types
+ * @n_limits: number of limitations
+ * @num_different_channels: can use up to this many different channels
+ * @max_interfaces: maximum number of interfaces in total allowed in this
+ *	group
+ * @beacon_int_infra_match: In this combination, the beacon intervals
+ *	between infrastructure and AP types must match. This is required
+ *	only in special cases.
+ * @radar_detect_widths: bitmap of channel widths supported for radar detection
+ * @radar_detect_regions: bitmap of regions supported for radar detection
+ *
+ * With this structure the driver can describe which interface
+ * combinations it supports concurrently.
+ *
+ * Examples:
+ *
+ * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total:
+ *
+ *  struct ieee80211_iface_limit limits1[] = {
+ *	{ .max = 1, .types = BIT(NL80211_IFTYPE_STATION), },
+ *	{ .max = 1, .types = BIT(NL80211_IFTYPE_AP}, },
+ *  };
+ *  struct ieee80211_iface_combination combination1 = {
+ *	.limits = limits1,
+ *	.n_limits = ARRAY_SIZE(limits1),
+ *	.max_interfaces = 2,
+ *	.beacon_int_infra_match = true,
+ *  };
+ *
+ *
+ * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total:
+ *
+ *  struct ieee80211_iface_limit limits2[] = {
+ *	{ .max = 8, .types = BIT(NL80211_IFTYPE_AP) |
+ *			     BIT(NL80211_IFTYPE_P2P_GO), },
+ *  };
+ *  struct ieee80211_iface_combination combination2 = {
+ *	.limits = limits2,
+ *	.n_limits = ARRAY_SIZE(limits2),
+ *	.max_interfaces = 8,
+ *	.num_different_channels = 1,
+ *  };
+ *
+ *
+ * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total.
+ *
+ * This allows for an infrastructure connection and three P2P connections.
+ *
+ *  struct ieee80211_iface_limit limits3[] = {
+ *	{ .max = 1, .types = BIT(NL80211_IFTYPE_STATION), },
+ *	{ .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) |
+ *			     BIT(NL80211_IFTYPE_P2P_CLIENT), },
+ *  };
+ *  struct ieee80211_iface_combination combination3 = {
+ *	.limits = limits3,
+ *	.n_limits = ARRAY_SIZE(limits3),
+ *	.max_interfaces = 4,
+ *	.num_different_channels = 2,
+ *  };
+ */
+struct ieee80211_iface_combination {
+	const struct ieee80211_iface_limit *limits;
+	u32 num_different_channels;
+	u16 max_interfaces;
+	u8 n_limits;
+	bool beacon_int_infra_match;
+	u8 radar_detect_widths;
+	u8 radar_detect_regions;
+};
+
+struct ieee80211_txrx_stypes {
+	u16 tx, rx;
+};
+
+/**
+ * enum wiphy_wowlan_support_flags - WoWLAN support flags
+ * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any"
+ *	trigger that keeps the device operating as-is and
+ *	wakes up the host on any activity, for example a
+ *	received packet that passed filtering; note that the
+ *	packet should be preserved in that case
+ * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet
+ *	(see nl80211.h)
+ * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect
+ * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep
+ * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure
+ * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request
+ * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure
+ * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release
+ * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection
+ */
+enum wiphy_wowlan_support_flags {
+	WIPHY_WOWLAN_ANY		= BIT(0),
+	WIPHY_WOWLAN_MAGIC_PKT		= BIT(1),
+	WIPHY_WOWLAN_DISCONNECT		= BIT(2),
+	WIPHY_WOWLAN_SUPPORTS_GTK_REKEY	= BIT(3),
+	WIPHY_WOWLAN_GTK_REKEY_FAILURE	= BIT(4),
+	WIPHY_WOWLAN_EAP_IDENTITY_REQ	= BIT(5),
+	WIPHY_WOWLAN_4WAY_HANDSHAKE	= BIT(6),
+	WIPHY_WOWLAN_RFKILL_RELEASE	= BIT(7),
+	WIPHY_WOWLAN_NET_DETECT		= BIT(8),
+};
+
+struct wiphy_wowlan_tcp_support {
+	const struct nl80211_wowlan_tcp_data_token_feature *tok;
+	u32 data_payload_max;
+	u32 data_interval_max;
+	u32 wake_payload_max;
+	bool seq;
+};
+
+/**
+ * struct wiphy_wowlan_support - WoWLAN support data
+ * @flags: see &enum wiphy_wowlan_support_flags
+ * @n_patterns: number of supported wakeup patterns
+ *	(see nl80211.h for the pattern definition)
+ * @pattern_max_len: maximum length of each pattern
+ * @pattern_min_len: minimum length of each pattern
+ * @max_pkt_offset: maximum Rx packet offset
+ * @max_nd_match_sets: maximum number of matchsets for net-detect,
+ *	similar, but not necessarily identical, to max_match_sets for
+ *	scheduled scans.
+ *	See &struct cfg80211_sched_scan_request.@match_sets for more
+ *	details.
+ * @tcp: TCP wakeup support information
+ */
+struct wiphy_wowlan_support {
+	u32 flags;
+	int n_patterns;
+	int pattern_max_len;
+	int pattern_min_len;
+	int max_pkt_offset;
+	int max_nd_match_sets;
+	const struct wiphy_wowlan_tcp_support *tcp;
+};
+
+/**
+ * struct wiphy_coalesce_support - coalesce support data
+ * @n_rules: maximum number of coalesce rules
+ * @max_delay: maximum supported coalescing delay in msecs
+ * @n_patterns: number of supported patterns in a rule
+ *	(see nl80211.h for the pattern definition)
+ * @pattern_max_len: maximum length of each pattern
+ * @pattern_min_len: minimum length of each pattern
+ * @max_pkt_offset: maximum Rx packet offset
+ */
+struct wiphy_coalesce_support {
+	int n_rules;
+	int max_delay;
+	int n_patterns;
+	int pattern_max_len;
+	int pattern_min_len;
+	int max_pkt_offset;
+};
+
+/**
+ * enum wiphy_vendor_command_flags - validation flags for vendor commands
+ * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev
+ * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev
+ * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running
+ *	(must be combined with %_WDEV or %_NETDEV)
+ */
+enum wiphy_vendor_command_flags {
+	WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0),
+	WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1),
+	WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2),
+};
+
+/**
+ * struct wiphy_vendor_command - vendor command definition
+ * @info: vendor command identifying information, as used in nl80211
+ * @flags: flags, see &enum wiphy_vendor_command_flags
+ * @doit: callback for the operation, note that wdev is %NULL if the
+ *	flags didn't ask for a wdev and non-%NULL otherwise; the data
+ *	pointer may be %NULL if userspace provided no data at all
+ */
+struct wiphy_vendor_command {
+	struct nl80211_vendor_cmd_info info;
+	u32 flags;
+	int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev,
+		    const void *data, int data_len);
+};
+
+/**
+ * struct wiphy - wireless hardware description
+ * @reg_notifier: the driver's regulatory notification callback,
+ *	note that if your driver uses wiphy_apply_custom_regulatory()
+ *	the reg_notifier's request can be passed as NULL
+ * @regd: the driver's regulatory domain, if one was requested via
+ * 	the regulatory_hint() API. This can be used by the driver
+ *	on the reg_notifier() if it chooses to ignore future
+ *	regulatory domain changes caused by other drivers.
+ * @signal_type: signal type reported in &struct cfg80211_bss.
+ * @cipher_suites: supported cipher suites
+ * @n_cipher_suites: number of supported cipher suites
+ * @retry_short: Retry limit for short frames (dot11ShortRetryLimit)
+ * @retry_long: Retry limit for long frames (dot11LongRetryLimit)
+ * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold);
+ *	-1 = fragmentation disabled, only odd values >= 256 used
+ * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled
+ * @_net: the network namespace this wiphy currently lives in
+ * @perm_addr: permanent MAC address of this device
+ * @addr_mask: If the device supports multiple MAC addresses by masking,
+ *	set this to a mask with variable bits set to 1, e.g. if the last
+ *	four bits are variable then set it to 00-00-00-00-00-0f. The actual
+ *	variable bits shall be determined by the interfaces added, with
+ *	interfaces not matching the mask being rejected to be brought up.
+ * @n_addresses: number of addresses in @addresses.
+ * @addresses: If the device has more than one address, set this pointer
+ *	to a list of addresses (6 bytes each). The first one will be used
+ *	by default for perm_addr. In this case, the mask should be set to
+ *	all-zeroes. In this case it is assumed that the device can handle
+ *	the same number of arbitrary MAC addresses.
+ * @registered: protects ->resume and ->suspend sysfs callbacks against
+ *	unregister hardware
+ * @debugfsdir: debugfs directory used for this wiphy, will be renamed
+ *	automatically on wiphy renames
+ * @dev: (virtual) struct device for this wiphy
+ * @registered: helps synchronize suspend/resume with wiphy unregister
+ * @wext: wireless extension handlers
+ * @priv: driver private data (sized according to wiphy_new() parameter)
+ * @interface_modes: bitmask of interfaces types valid for this wiphy,
+ *	must be set by driver
+ * @iface_combinations: Valid interface combinations array, should not
+ *	list single interface types.
+ * @n_iface_combinations: number of entries in @iface_combinations array.
+ * @software_iftypes: bitmask of software interface types, these are not
+ *	subject to any restrictions since they are purely managed in SW.
+ * @flags: wiphy flags, see &enum wiphy_flags
+ * @regulatory_flags: wiphy regulatory flags, see
+ *	&enum ieee80211_regulatory_flags
+ * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
+ * @ext_features: extended features advertised to nl80211, see
+ *	&enum nl80211_ext_feature_index.
+ * @bss_priv_size: each BSS struct has private data allocated with it,
+ *	this variable determines its size
+ * @max_scan_ssids: maximum number of SSIDs the device can scan for in
+ *	any given scan
+ * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
+ *	for in any given scheduled scan
+ * @max_match_sets: maximum number of match sets the device can handle
+ *	when performing a scheduled scan, 0 if filtering is not
+ *	supported.
+ * @max_scan_ie_len: maximum length of user-controlled IEs device can
+ *	add to probe request frames transmitted during a scan, must not
+ *	include fixed IEs like supported rates
+ * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled
+ *	scans
+ * @coverage_class: current coverage class
+ * @fw_version: firmware version for ethtool reporting
+ * @hw_version: hardware version for ethtool reporting
+ * @max_num_pmkids: maximum number of PMKIDs supported by device
+ * @privid: a pointer that drivers can use to identify if an arbitrary
+ *	wiphy is theirs, e.g. in global notifiers
+ * @bands: information about bands/channels supported by this device
+ *
+ * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
+ *	transmitted through nl80211, points to an array indexed by interface
+ *	type
+ *
+ * @available_antennas_tx: bitmap of antennas which are available to be
+ *	configured as TX antennas. Antenna configuration commands will be
+ *	rejected unless this or @available_antennas_rx is set.
+ *
+ * @available_antennas_rx: bitmap of antennas which are available to be
+ *	configured as RX antennas. Antenna configuration commands will be
+ *	rejected unless this or @available_antennas_tx is set.
+ *
+ * @probe_resp_offload:
+ *	 Bitmap of supported protocols for probe response offloading.
+ *	 See &enum nl80211_probe_resp_offload_support_attr. Only valid
+ *	 when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
+ *
+ * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
+ *	may request, if implemented.
+ *
+ * @wowlan: WoWLAN support information
+ * @wowlan_config: current WoWLAN configuration; this should usually not be
+ *	used since access to it is necessarily racy, use the parameter passed
+ *	to the suspend() operation instead.
+ *
+ * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
+ * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
+ *	If null, then none can be over-ridden.
+ * @vht_capa_mod_mask:  Specify what VHT capabilities can be over-ridden.
+ *	If null, then none can be over-ridden.
+ *
+ * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
+ *	supports for ACL.
+ *
+ * @extended_capabilities: extended capabilities supported by the driver,
+ *	additional capabilities might be supported by userspace; these are
+ *	the 802.11 extended capabilities ("Extended Capabilities element")
+ *	and are in the same format as in the information element. See
+ *	802.11-2012 8.4.2.29 for the defined fields.
+ * @extended_capabilities_mask: mask of the valid values
+ * @extended_capabilities_len: length of the extended capabilities
+ * @coalesce: packet coalescing support information
+ *
+ * @vendor_commands: array of vendor commands supported by the hardware
+ * @n_vendor_commands: number of vendor commands
+ * @vendor_events: array of vendor events supported by the hardware
+ * @n_vendor_events: number of vendor events
+ *
+ * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode
+ *	(including P2P GO) or 0 to indicate no such limit is advertised. The
+ *	driver is allowed to advertise a theoretical limit that it can reach in
+ *	some cases, but may not always reach.
+ *
+ * @max_num_csa_counters: Number of supported csa_counters in beacons
+ *	and probe responses.  This value should be set if the driver
+ *	wishes to limit the number of csa counters. Default (0) means
+ *	infinite.
+ * @max_adj_channel_rssi_comp: max offset of between the channel on which the
+ *	frame was sent and the channel on which the frame was heard for which
+ *	the reported rssi is still valid. If a driver is able to compensate the
+ *	low rssi when a frame is heard on different channel, then it should set
+ *	this variable to the maximal offset for which it can compensate.
+ *	This value should be set in MHz.
+ */
+struct wiphy {
+	/* assign these fields before you register the wiphy */
+
+	/* permanent MAC address(es) */
+	u8 perm_addr[ETH_ALEN];
+	u8 addr_mask[ETH_ALEN];
+
+	struct mac_address *addresses;
+
+	const struct ieee80211_txrx_stypes *mgmt_stypes;
+
+	const struct ieee80211_iface_combination *iface_combinations;
+	int n_iface_combinations;
+	u16 software_iftypes;
+
+	u16 n_addresses;
+
+	/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
+	u16 interface_modes;
+
+	u16 max_acl_mac_addrs;
+
+	u32 flags, regulatory_flags, features;
+	u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)];
+
+	u32 ap_sme_capa;
+
+	enum cfg80211_signal_type signal_type;
+
+	int bss_priv_size;
+	u8 max_scan_ssids;
+	u8 max_sched_scan_ssids;
+	u8 max_match_sets;
+	u16 max_scan_ie_len;
+	u16 max_sched_scan_ie_len;
+
+	int n_cipher_suites;
+	const u32 *cipher_suites;
+
+	u8 retry_short;
+	u8 retry_long;
+	u32 frag_threshold;
+	u32 rts_threshold;
+	u8 coverage_class;
+
+	char fw_version[ETHTOOL_FWVERS_LEN];
+	u32 hw_version;
+
+#ifdef CONFIG_PM
+	const struct wiphy_wowlan_support *wowlan;
+	struct cfg80211_wowlan *wowlan_config;
+#endif
+
+	u16 max_remain_on_channel_duration;
+
+	u8 max_num_pmkids;
+
+	u32 available_antennas_tx;
+	u32 available_antennas_rx;
+
+	/*
+	 * Bitmap of supported protocols for probe response offloading
+	 * see &enum nl80211_probe_resp_offload_support_attr. Only valid
+	 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
+	 */
+	u32 probe_resp_offload;
+
+	const u8 *extended_capabilities, *extended_capabilities_mask;
+	u8 extended_capabilities_len;
+
+	/* If multiple wiphys are registered and you're handed e.g.
+	 * a regular netdev with assigned ieee80211_ptr, you won't
+	 * know whether it points to a wiphy your driver has registered
+	 * or not. Assign this to something global to your driver to
+	 * help determine whether you own this wiphy or not. */
+	const void *privid;
+
+	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];
+
+	/* Lets us get back the wiphy on the callback */
+	void (*reg_notifier)(struct wiphy *wiphy,
+			     struct regulatory_request *request);
+
+	/* fields below are read-only, assigned by cfg80211 */
+
+	const struct ieee80211_regdomain __rcu *regd;
+
+	/* the item in /sys/class/ieee80211/ points to this,
+	 * you need use set_wiphy_dev() (see below) */
+	struct device dev;
+
+	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
+	bool registered;
+
+	/* dir in debugfs: ieee80211/<wiphyname> */
+	struct dentry *debugfsdir;
+
+	const struct ieee80211_ht_cap *ht_capa_mod_mask;
+	const struct ieee80211_vht_cap *vht_capa_mod_mask;
+
+	/* the network namespace this phy lives in currently */
+	possible_net_t _net;
+
+#ifdef CONFIG_CFG80211_WEXT
+	const struct iw_handler_def *wext;
+#endif
+
+	const struct wiphy_coalesce_support *coalesce;
+
+	const struct wiphy_vendor_command *vendor_commands;
+	const struct nl80211_vendor_cmd_info *vendor_events;
+	int n_vendor_commands, n_vendor_events;
+
+	u16 max_ap_assoc_sta;
+
+	u8 max_num_csa_counters;
+	u8 max_adj_channel_rssi_comp;
+
+	char priv[0] __aligned(NETDEV_ALIGN);
+};
+
+static inline struct net *wiphy_net(struct wiphy *wiphy)
+{
+	return read_pnet(&wiphy->_net);
+}
+
+static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
+{
+	write_pnet(&wiphy->_net, net);
+}
+
+/**
+ * wiphy_priv - return priv from wiphy
+ *
+ * @wiphy: the wiphy whose priv pointer to return
+ * Return: The priv of @wiphy.
+ */
+static inline void *wiphy_priv(struct wiphy *wiphy)
+{
+	BUG_ON(!wiphy);
+	return &wiphy->priv;
+}
+
+/**
+ * priv_to_wiphy - return the wiphy containing the priv
+ *
+ * @priv: a pointer previously returned by wiphy_priv
+ * Return: The wiphy of @priv.
+ */
+static inline struct wiphy *priv_to_wiphy(void *priv)
+{
+	BUG_ON(!priv);
+	return container_of(priv, struct wiphy, priv);
+}
+
+/**
+ * set_wiphy_dev - set device pointer for wiphy
+ *
+ * @wiphy: The wiphy whose device to bind
+ * @dev: The device to parent it to
+ */
+static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev)
+{
+	wiphy->dev.parent = dev;
+}
+
+/**
+ * wiphy_dev - get wiphy dev pointer
+ *
+ * @wiphy: The wiphy whose device struct to look up
+ * Return: The dev of @wiphy.
+ */
+static inline struct device *wiphy_dev(struct wiphy *wiphy)
+{
+	return wiphy->dev.parent;
+}
+
+/**
+ * wiphy_name - get wiphy name
+ *
+ * @wiphy: The wiphy whose name to return
+ * Return: The name of @wiphy.
+ */
+static inline const char *wiphy_name(const struct wiphy *wiphy)
+{
+	return dev_name(&wiphy->dev);
+}
+
+/**
+ * wiphy_new_nm - create a new wiphy for use with cfg80211
+ *
+ * @ops: The configuration operations for this device
+ * @sizeof_priv: The size of the private area to allocate
+ * @requested_name: Request a particular name.
+ *	NULL is valid value, and means use the default phy%d naming.
+ *
+ * Create a new wiphy and associate the given operations with it.
+ * @sizeof_priv bytes are allocated for private use.
+ *
+ * Return: A pointer to the new wiphy. This pointer must be
+ * assigned to each netdev's ieee80211_ptr for proper operation.
+ */
+struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
+			   const char *requested_name);
+
+/**
+ * wiphy_new - create a new wiphy for use with cfg80211
+ *
+ * @ops: The configuration operations for this device
+ * @sizeof_priv: The size of the private area to allocate
+ *
+ * Create a new wiphy and associate the given operations with it.
+ * @sizeof_priv bytes are allocated for private use.
+ *
+ * Return: A pointer to the new wiphy. This pointer must be
+ * assigned to each netdev's ieee80211_ptr for proper operation.
+ */
+static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops,
+				      int sizeof_priv)
+{
+	return wiphy_new_nm(ops, sizeof_priv, NULL);
+}
+
+/**
+ * wiphy_register - register a wiphy with cfg80211
+ *
+ * @wiphy: The wiphy to register.
+ *
+ * Return: A non-negative wiphy index or a negative error code.
+ */
+int wiphy_register(struct wiphy *wiphy);
+
+/**
+ * wiphy_unregister - deregister a wiphy from cfg80211
+ *
+ * @wiphy: The wiphy to unregister.
+ *
+ * After this call, no more requests can be made with this priv
+ * pointer, but the call may sleep to wait for an outstanding
+ * request that is being handled.
+ */
+void wiphy_unregister(struct wiphy *wiphy);
+
+/**
+ * wiphy_free - free wiphy
+ *
+ * @wiphy: The wiphy to free
+ */
+void wiphy_free(struct wiphy *wiphy);
+
+/* internal structs */
+struct cfg80211_conn;
+struct cfg80211_internal_bss;
+struct cfg80211_cached_keys;
+
+/**
+ * struct wireless_dev - wireless device state
+ *
+ * For netdevs, this structure must be allocated by the driver
+ * that uses the ieee80211_ptr field in struct net_device (this
+ * is intentional so it can be allocated along with the netdev.)
+ * It need not be registered then as netdev registration will
+ * be intercepted by cfg80211 to see the new wireless device.
+ *
+ * For non-netdev uses, it must also be allocated by the driver
+ * in response to the cfg80211 callbacks that require it, as
+ * there's no netdev registration in that case it may not be
+ * allocated outside of callback operations that return it.
+ *
+ * @wiphy: pointer to hardware description
+ * @iftype: interface type
+ * @list: (private) Used to collect the interfaces
+ * @netdev: (private) Used to reference back to the netdev, may be %NULL
+ * @identifier: (private) Identifier used in nl80211 to identify this
+ *	wireless device if it has no netdev
+ * @current_bss: (private) Used by the internal configuration code
+ * @chandef: (private) Used by the internal configuration code to track
+ *	the user-set channel definition.
+ * @preset_chandef: (private) Used by the internal configuration code to
+ *	track the channel to be used for AP later
+ * @bssid: (private) Used by the internal configuration code
+ * @ssid: (private) Used by the internal configuration code
+ * @ssid_len: (private) Used by the internal configuration code
+ * @mesh_id_len: (private) Used by the internal configuration code
+ * @mesh_id_up_len: (private) Used by the internal configuration code
+ * @wext: (private) Used by the internal wireless extensions compat code
+ * @use_4addr: indicates 4addr mode is used on this interface, must be
+ *	set by driver (if supported) on add_interface BEFORE registering the
+ *	netdev and may otherwise be used by driver read-only, will be update
+ *	by cfg80211 on change_interface
+ * @mgmt_registrations: list of registrations for management frames
+ * @mgmt_registrations_lock: lock for the list
+ * @mtx: mutex used to lock data in this struct, may be used by drivers
+ *	and some API functions require it held
+ * @beacon_interval: beacon interval used on this device for transmitting
+ *	beacons, 0 when not valid
+ * @address: The address for this device, valid only if @netdev is %NULL
+ * @p2p_started: true if this is a P2P Device that has been started
+ * @cac_started: true if DFS channel availability check has been started
+ * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
+ * @cac_time_ms: CAC time in ms
+ * @ps: powersave mode is enabled
+ * @ps_timeout: dynamic powersave timeout
+ * @ap_unexpected_nlportid: (private) netlink port ID of application
+ *	registered for unexpected class 3 frames (AP mode)
+ * @conn: (private) cfg80211 software SME connection state machine data
+ * @connect_keys: (private) keys to set after connection is established
+ * @ibss_fixed: (private) IBSS is using fixed BSSID
+ * @ibss_dfs_possible: (private) IBSS may change to a DFS channel
+ * @event_list: (private) list for internal event processing
+ * @event_lock: (private) lock for event list
+ * @owner_nlportid: (private) owner socket port ID
+ */
+struct wireless_dev {
+	struct wiphy *wiphy;
+	enum nl80211_iftype iftype;
+
+	/* the remainder of this struct should be private to cfg80211 */
+	struct list_head list;
+	struct net_device *netdev;
+
+	u32 identifier;
+
+	struct list_head mgmt_registrations;
+	spinlock_t mgmt_registrations_lock;
+
+	struct mutex mtx;
+
+	bool use_4addr, p2p_started;
+
+	u8 address[ETH_ALEN] __aligned(sizeof(u16));
+
+	/* currently used for IBSS and SME - might be rearranged later */
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	u8 ssid_len, mesh_id_len, mesh_id_up_len;
+	struct cfg80211_conn *conn;
+	struct cfg80211_cached_keys *connect_keys;
+
+	struct list_head event_list;
+	spinlock_t event_lock;
+
+	struct cfg80211_internal_bss *current_bss; /* associated / joined */
+	struct cfg80211_chan_def preset_chandef;
+	struct cfg80211_chan_def chandef;
+
+	bool ibss_fixed;
+	bool ibss_dfs_possible;
+
+	bool ps;
+	int ps_timeout;
+
+	int beacon_interval;
+
+	u32 ap_unexpected_nlportid;
+
+	bool cac_started;
+	unsigned long cac_start_time;
+	unsigned int cac_time_ms;
+
+	u32 owner_nlportid;
+
+#ifdef CONFIG_CFG80211_WEXT
+	/* wext data */
+	struct {
+		struct cfg80211_ibss_params ibss;
+		struct cfg80211_connect_params connect;
+		struct cfg80211_cached_keys *keys;
+		const u8 *ie;
+		size_t ie_len;
+		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+		u8 ssid[IEEE80211_MAX_SSID_LEN];
+		s8 default_key, default_mgmt_key;
+		bool prev_bssid_valid;
+	} wext;
+#endif
+};
+
+static inline u8 *wdev_address(struct wireless_dev *wdev)
+{
+	if (wdev->netdev)
+		return wdev->netdev->dev_addr;
+	return wdev->address;
+}
+
+/**
+ * wdev_priv - return wiphy priv from wireless_dev
+ *
+ * @wdev: The wireless device whose wiphy's priv pointer to return
+ * Return: The wiphy priv of @wdev.
+ */
+static inline void *wdev_priv(struct wireless_dev *wdev)
+{
+	BUG_ON(!wdev);
+	return wiphy_priv(wdev->wiphy);
+}
+
+/**
+ * DOC: Utility functions
+ *
+ * cfg80211 offers a number of utility functions that can be useful.
+ */
+
+/**
+ * ieee80211_channel_to_frequency - convert channel number to frequency
+ * @chan: channel number
+ * @band: band, necessary due to channel number overlap
+ * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
+ */
+int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
+
+/**
+ * ieee80211_frequency_to_channel - convert frequency to channel number
+ * @freq: center frequency
+ * Return: The corresponding channel, or 0 if the conversion failed.
+ */
+int ieee80211_frequency_to_channel(int freq);
+
+/*
+ * Name indirection necessary because the ieee80211 code also has
+ * a function named "ieee80211_get_channel", so if you include
+ * cfg80211's header file you get cfg80211's version, if you try
+ * to include both header files you'll (rightfully!) get a symbol
+ * clash.
+ */
+struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
+						  int freq);
+/**
+ * ieee80211_get_channel - get channel struct from wiphy for specified frequency
+ * @wiphy: the struct wiphy to get the channel for
+ * @freq: the center frequency of the channel
+ * Return: The channel struct from @wiphy at @freq.
+ */
+static inline struct ieee80211_channel *
+ieee80211_get_channel(struct wiphy *wiphy, int freq)
+{
+	return __ieee80211_get_channel(wiphy, freq);
+}
+
+/**
+ * ieee80211_get_response_rate - get basic rate for a given rate
+ *
+ * @sband: the band to look for rates in
+ * @basic_rates: bitmap of basic rates
+ * @bitrate: the bitrate for which to find the basic rate
+ *
+ * Return: The basic rate corresponding to a given bitrate, that
+ * is the next lower bitrate contained in the basic rate map,
+ * which is, for this function, given as a bitmap of indices of
+ * rates in the band's bitrate table.
+ */
+struct ieee80211_rate *
+ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
+			    u32 basic_rates, int bitrate);
+
+/**
+ * ieee80211_mandatory_rates - get mandatory rates for a given band
+ * @sband: the band to look for rates in
+ * @scan_width: width of the control channel
+ *
+ * This function returns a bitmap of the mandatory rates for the given
+ * band, bits are set according to the rate position in the bitrates array.
+ */
+u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
+			      enum nl80211_bss_scan_width scan_width);
+
+/*
+ * Radiotap parsing functions -- for controlled injection support
+ *
+ * Implemented in net/wireless/radiotap.c
+ * Documentation in Documentation/networking/radiotap-headers.txt
+ */
+
+struct radiotap_align_size {
+	uint8_t align:4, size:4;
+};
+
+struct ieee80211_radiotap_namespace {
+	const struct radiotap_align_size *align_size;
+	int n_bits;
+	uint32_t oui;
+	uint8_t subns;
+};
+
+struct ieee80211_radiotap_vendor_namespaces {
+	const struct ieee80211_radiotap_namespace *ns;
+	int n_ns;
+};
+
+/**
+ * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
+ * @this_arg_index: index of current arg, valid after each successful call
+ *	to ieee80211_radiotap_iterator_next()
+ * @this_arg: pointer to current radiotap arg; it is valid after each
+ *	call to ieee80211_radiotap_iterator_next() but also after
+ *	ieee80211_radiotap_iterator_init() where it will point to
+ *	the beginning of the actual data portion
+ * @this_arg_size: length of the current arg, for convenience
+ * @current_namespace: pointer to the current namespace definition
+ *	(or internally %NULL if the current namespace is unknown)
+ * @is_radiotap_ns: indicates whether the current namespace is the default
+ *	radiotap namespace or not
+ *
+ * @_rtheader: pointer to the radiotap header we are walking through
+ * @_max_length: length of radiotap header in cpu byte ordering
+ * @_arg_index: next argument index
+ * @_arg: next argument pointer
+ * @_next_bitmap: internal pointer to next present u32
+ * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
+ * @_vns: vendor namespace definitions
+ * @_next_ns_data: beginning of the next namespace's data
+ * @_reset_on_ext: internal; reset the arg index to 0 when going to the
+ *	next bitmap word
+ *
+ * Describes the radiotap parser state. Fields prefixed with an underscore
+ * must not be used by users of the parser, only by the parser internally.
+ */
+
+struct ieee80211_radiotap_iterator {
+	struct ieee80211_radiotap_header *_rtheader;
+	const struct ieee80211_radiotap_vendor_namespaces *_vns;
+	const struct ieee80211_radiotap_namespace *current_namespace;
+
+	unsigned char *_arg, *_next_ns_data;
+	__le32 *_next_bitmap;
+
+	unsigned char *this_arg;
+	int this_arg_index;
+	int this_arg_size;
+
+	int is_radiotap_ns;
+
+	int _max_length;
+	int _arg_index;
+	uint32_t _bitmap_shifter;
+	int _reset_on_ext;
+};
+
+int
+ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator,
+				 struct ieee80211_radiotap_header *radiotap_header,
+				 int max_length,
+				 const struct ieee80211_radiotap_vendor_namespaces *vns);
+
+int
+ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator);
+
+
+extern const unsigned char rfc1042_header[6];
+extern const unsigned char bridge_tunnel_header[6];
+
+/**
+ * ieee80211_get_hdrlen_from_skb - get header length from data
+ *
+ * @skb: the frame
+ *
+ * Given an skb with a raw 802.11 header at the data pointer this function
+ * returns the 802.11 header length.
+ *
+ * Return: The 802.11 header length in bytes (not including encryption
+ * headers). Or 0 if the data in the sk_buff is too short to contain a valid
+ * 802.11 header.
+ */
+unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
+
+/**
+ * ieee80211_hdrlen - get header length in bytes from frame control
+ * @fc: frame control field in little-endian format
+ * Return: The header length in bytes.
+ */
+unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
+
+/**
+ * ieee80211_get_mesh_hdrlen - get mesh extension header length
+ * @meshhdr: the mesh extension header, only the flags field
+ *	(first byte) will be accessed
+ * Return: The length of the extension header, which is always at
+ * least 6 bytes and at most 18 if address 5 and 6 are present.
+ */
+unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);
+
+/**
+ * DOC: Data path helpers
+ *
+ * In addition to generic utilities, cfg80211 also offers
+ * functions that help implement the data path for devices
+ * that do not do the 802.11/802.3 conversion on the device.
+ */
+
+/**
+ * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3
+ * @skb: the 802.11 data frame
+ * @addr: the device MAC address
+ * @iftype: the virtual interface type
+ * Return: 0 on success. Non-zero on error.
+ */
+int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
+			   enum nl80211_iftype iftype);
+
+/**
+ * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11
+ * @skb: the 802.3 frame
+ * @addr: the device MAC address
+ * @iftype: the virtual interface type
+ * @bssid: the network bssid (used only for iftype STATION and ADHOC)
+ * @qos: build 802.11 QoS data frame
+ * Return: 0 on success, or a negative error code.
+ */
+int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
+			     enum nl80211_iftype iftype, const u8 *bssid,
+			     bool qos);
+
+/**
+ * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame
+ *
+ * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of
+ * 802.3 frames. The @list will be empty if the decode fails. The
+ * @skb is consumed after the function returns.
+ *
+ * @skb: The input IEEE 802.11n A-MSDU frame.
+ * @list: The output list of 802.3 frames. It must be allocated and
+ *	initialized by by the caller.
+ * @addr: The device MAC address.
+ * @iftype: The device interface type.
+ * @extra_headroom: The hardware extra headroom for SKBs in the @list.
+ * @has_80211_header: Set it true if SKB is with IEEE 802.11 header.
+ */
+void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
+			      const u8 *addr, enum nl80211_iftype iftype,
+			      const unsigned int extra_headroom,
+			      bool has_80211_header);
+
+/**
+ * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
+ * @skb: the data frame
+ * @qos_map: Interworking QoS mapping or %NULL if not in use
+ * Return: The 802.1p/1d tag.
+ */
+unsigned int cfg80211_classify8021d(struct sk_buff *skb,
+				    struct cfg80211_qos_map *qos_map);
+
+/**
+ * cfg80211_find_ie - find information element in data
+ *
+ * @eid: element ID
+ * @ies: data consisting of IEs
+ * @len: length of data
+ *
+ * Return: %NULL if the element ID could not be found or if
+ * the element is invalid (claims to be longer than the given
+ * data), or a pointer to the first byte of the requested
+ * element, that is the byte containing the element ID.
+ *
+ * Note: There are no checks on the element length other than
+ * having to fit into the given data.
+ */
+const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);
+
+/**
+ * cfg80211_find_vendor_ie - find vendor specific information element in data
+ *
+ * @oui: vendor OUI
+ * @oui_type: vendor-specific OUI type
+ * @ies: data consisting of IEs
+ * @len: length of data
+ *
+ * Return: %NULL if the vendor specific element ID could not be found or if the
+ * element is invalid (claims to be longer than the given data), or a pointer to
+ * the first byte of the requested element, that is the byte containing the
+ * element ID.
+ *
+ * Note: There are no checks on the element length other than having to fit into
+ * the given data.
+ */
+const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
+				  const u8 *ies, int len);
+
+/**
+ * DOC: Regulatory enforcement infrastructure
+ *
+ * TODO
+ */
+
+/**
+ * regulatory_hint - driver hint to the wireless core a regulatory domain
+ * @wiphy: the wireless device giving the hint (used only for reporting
+ *	conflicts)
+ * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain
+ * 	should be in. If @rd is set this should be NULL. Note that if you
+ * 	set this to NULL you should still set rd->alpha2 to some accepted
+ * 	alpha2.
+ *
+ * Wireless drivers can use this function to hint to the wireless core
+ * what it believes should be the current regulatory domain by
+ * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory
+ * domain should be in or by providing a completely build regulatory domain.
+ * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried
+ * for a regulatory domain structure for the respective country.
+ *
+ * The wiphy must have been registered to cfg80211 prior to this call.
+ * For cfg80211 drivers this means you must first use wiphy_register(),
+ * for mac80211 drivers you must first use ieee80211_register_hw().
+ *
+ * Drivers should check the return value, its possible you can get
+ * an -ENOMEM.
+ *
+ * Return: 0 on success. -ENOMEM.
+ */
+int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
+
+/**
+ * regulatory_set_wiphy_regd - set regdom info for self managed drivers
+ * @wiphy: the wireless device we want to process the regulatory domain on
+ * @rd: the regulatory domain informatoin to use for this wiphy
+ *
+ * Set the regulatory domain information for self-managed wiphys, only they
+ * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more
+ * information.
+ *
+ * Return: 0 on success. -EINVAL, -EPERM
+ */
+int regulatory_set_wiphy_regd(struct wiphy *wiphy,
+			      struct ieee80211_regdomain *rd);
+
+/**
+ * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers
+ * @wiphy: the wireless device we want to process the regulatory domain on
+ * @rd: the regulatory domain information to use for this wiphy
+ *
+ * This functions requires the RTNL to be held and applies the new regdomain
+ * synchronously to this wiphy. For more details see
+ * regulatory_set_wiphy_regd().
+ *
+ * Return: 0 on success. -EINVAL, -EPERM
+ */
+int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
+					struct ieee80211_regdomain *rd);
+
+/**
+ * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
+ * @wiphy: the wireless device we want to process the regulatory domain on
+ * @regd: the custom regulatory domain to use for this wiphy
+ *
+ * Drivers can sometimes have custom regulatory domains which do not apply
+ * to a specific country. Drivers can use this to apply such custom regulatory
+ * domains. This routine must be called prior to wiphy registration. The
+ * custom regulatory domain will be trusted completely and as such previous
+ * default channel settings will be disregarded. If no rule is found for a
+ * channel on the regulatory domain the channel will be disabled.
+ * Drivers using this for a wiphy should also set the wiphy flag
+ * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy
+ * that called this helper.
+ */
+void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
+				   const struct ieee80211_regdomain *regd);
+
+/**
+ * freq_reg_info - get regulatory information for the given frequency
+ * @wiphy: the wiphy for which we want to process this rule for
+ * @center_freq: Frequency in KHz for which we want regulatory information for
+ *
+ * Use this function to get the regulatory rule for a specific frequency on
+ * a given wireless device. If the device has a specific regulatory domain
+ * it wants to follow we respect that unless a country IE has been received
+ * and processed already.
+ *
+ * Return: A valid pointer, or, when an error occurs, for example if no rule
+ * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to
+ * check and PTR_ERR() to obtain the numeric return value. The numeric return
+ * value will be -ERANGE if we determine the given center_freq does not even
+ * have a regulatory rule for a frequency range in the center_freq's band.
+ * See freq_in_rule_band() for our current definition of a band -- this is
+ * purely subjective and right now it's 802.11 specific.
+ */
+const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
+					       u32 center_freq);
+
+/**
+ * reg_initiator_name - map regulatory request initiator enum to name
+ * @initiator: the regulatory request initiator
+ *
+ * You can use this to map the regulatory request initiator enum to a
+ * proper string representation.
+ */
+const char *reg_initiator_name(enum nl80211_reg_initiator initiator);
+
+/*
+ * callbacks for asynchronous cfg80211 methods, notification
+ * functions and BSS handling helpers
+ */
+
+/**
+ * cfg80211_scan_done - notify that scan finished
+ *
+ * @request: the corresponding scan request
+ * @aborted: set to true if the scan was aborted for any reason,
+ *	userspace will be notified of that
+ */
+void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted);
+
+/**
+ * cfg80211_sched_scan_results - notify that new scan results are available
+ *
+ * @wiphy: the wiphy which got scheduled scan results
+ */
+void cfg80211_sched_scan_results(struct wiphy *wiphy);
+
+/**
+ * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped
+ *
+ * @wiphy: the wiphy on which the scheduled scan stopped
+ *
+ * The driver can call this function to inform cfg80211 that the
+ * scheduled scan had to be stopped, for whatever reason.  The driver
+ * is then called back via the sched_scan_stop operation when done.
+ */
+void cfg80211_sched_scan_stopped(struct wiphy *wiphy);
+
+/**
+ * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped
+ *
+ * @wiphy: the wiphy on which the scheduled scan stopped
+ *
+ * The driver can call this function to inform cfg80211 that the
+ * scheduled scan had to be stopped, for whatever reason.  The driver
+ * is then called back via the sched_scan_stop operation when done.
+ * This function should be called with rtnl locked.
+ */
+void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy);
+
+/**
+ * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame
+ *
+ * @wiphy: the wiphy reporting the BSS
+ * @rx_channel: The channel the frame was received on
+ * @scan_width: width of the control channel
+ * @mgmt: the management frame (probe response or beacon)
+ * @len: length of the management frame
+ * @signal: the signal strength, type depends on the wiphy's signal_type
+ * @gfp: context flags
+ *
+ * This informs cfg80211 that BSS information was found and
+ * the BSS should be updated/added.
+ *
+ * Return: A referenced struct, must be released with cfg80211_put_bss()!
+ * Or %NULL on error.
+ */
+struct cfg80211_bss * __must_check
+cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
+				struct ieee80211_channel *rx_channel,
+				enum nl80211_bss_scan_width scan_width,
+				struct ieee80211_mgmt *mgmt, size_t len,
+				s32 signal, gfp_t gfp);
+
+static inline struct cfg80211_bss * __must_check
+cfg80211_inform_bss_frame(struct wiphy *wiphy,
+			  struct ieee80211_channel *rx_channel,
+			  struct ieee80211_mgmt *mgmt, size_t len,
+			  s32 signal, gfp_t gfp)
+{
+	return cfg80211_inform_bss_width_frame(wiphy, rx_channel,
+					       NL80211_BSS_CHAN_WIDTH_20,
+					       mgmt, len, signal, gfp);
+}
+
+/**
+ * enum cfg80211_bss_frame_type - frame type that the BSS data came from
+ * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is
+ *	from a beacon or probe response
+ * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon
+ * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response
+ */
+enum cfg80211_bss_frame_type {
+	CFG80211_BSS_FTYPE_UNKNOWN,
+	CFG80211_BSS_FTYPE_BEACON,
+	CFG80211_BSS_FTYPE_PRESP,
+};
+
+/**
+ * cfg80211_inform_bss_width - inform cfg80211 of a new BSS
+ *
+ * @wiphy: the wiphy reporting the BSS
+ * @rx_channel: The channel the frame was received on
+ * @scan_width: width of the control channel
+ * @ftype: frame type (if known)
+ * @bssid: the BSSID of the BSS
+ * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
+ * @capability: the capability field sent by the peer
+ * @beacon_interval: the beacon interval announced by the peer
+ * @ie: additional IEs sent by the peer
+ * @ielen: length of the additional IEs
+ * @signal: the signal strength, type depends on the wiphy's signal_type
+ * @gfp: context flags
+ *
+ * This informs cfg80211 that BSS information was found and
+ * the BSS should be updated/added.
+ *
+ * Return: A referenced struct, must be released with cfg80211_put_bss()!
+ * Or %NULL on error.
+ */
+struct cfg80211_bss * __must_check
+cfg80211_inform_bss_width(struct wiphy *wiphy,
+			  struct ieee80211_channel *rx_channel,
+			  enum nl80211_bss_scan_width scan_width,
+			  enum cfg80211_bss_frame_type ftype,
+			  const u8 *bssid, u64 tsf, u16 capability,
+			  u16 beacon_interval, const u8 *ie, size_t ielen,
+			  s32 signal, gfp_t gfp);
+
+static inline struct cfg80211_bss * __must_check
+cfg80211_inform_bss(struct wiphy *wiphy,
+		    struct ieee80211_channel *rx_channel,
+		    enum cfg80211_bss_frame_type ftype,
+		    const u8 *bssid, u64 tsf, u16 capability,
+		    u16 beacon_interval, const u8 *ie, size_t ielen,
+		    s32 signal, gfp_t gfp)
+{
+	return cfg80211_inform_bss_width(wiphy, rx_channel,
+					 NL80211_BSS_CHAN_WIDTH_20, ftype,
+					 bssid, tsf, capability,
+					 beacon_interval, ie, ielen, signal,
+					 gfp);
+}
+
+struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
+				      struct ieee80211_channel *channel,
+				      const u8 *bssid,
+				      const u8 *ssid, size_t ssid_len,
+				      enum ieee80211_bss_type bss_type,
+				      enum ieee80211_privacy);
+static inline struct cfg80211_bss *
+cfg80211_get_ibss(struct wiphy *wiphy,
+		  struct ieee80211_channel *channel,
+		  const u8 *ssid, size_t ssid_len)
+{
+	return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len,
+				IEEE80211_BSS_TYPE_IBSS,
+				IEEE80211_PRIVACY_ANY);
+}
+
+/**
+ * cfg80211_ref_bss - reference BSS struct
+ * @wiphy: the wiphy this BSS struct belongs to
+ * @bss: the BSS struct to reference
+ *
+ * Increments the refcount of the given BSS struct.
+ */
+void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
+
+/**
+ * cfg80211_put_bss - unref BSS struct
+ * @wiphy: the wiphy this BSS struct belongs to
+ * @bss: the BSS struct
+ *
+ * Decrements the refcount of the given BSS struct.
+ */
+void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
+
+/**
+ * cfg80211_unlink_bss - unlink BSS from internal data structures
+ * @wiphy: the wiphy
+ * @bss: the bss to remove
+ *
+ * This function removes the given BSS from the internal data structures
+ * thereby making it no longer show up in scan results etc. Use this
+ * function when you detect a BSS is gone. Normally BSSes will also time
+ * out, so it is not necessary to use this function at all.
+ */
+void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
+
+static inline enum nl80211_bss_scan_width
+cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		return NL80211_BSS_CHAN_WIDTH_5;
+	case NL80211_CHAN_WIDTH_10:
+		return NL80211_BSS_CHAN_WIDTH_10;
+	default:
+		return NL80211_BSS_CHAN_WIDTH_20;
+	}
+}
+
+/**
+ * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
+ * @dev: network device
+ * @buf: authentication frame (header + body)
+ * @len: length of the frame data
+ *
+ * This function is called whenever an authentication, disassociation or
+ * deauthentication frame has been received and processed in station mode.
+ * After being asked to authenticate via cfg80211_ops::auth() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ * After being asked to associate via cfg80211_ops::assoc() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ * While connected, the driver must calls this for received and processed
+ * disassociation and deauthentication frames. If the frame couldn't be used
+ * because it was unprotected, the driver must call the function
+ * cfg80211_rx_unprot_mlme_mgmt() instead.
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's mutex.
+ */
+void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
+
+/**
+ * cfg80211_auth_timeout - notification of timed out authentication
+ * @dev: network device
+ * @addr: The MAC address of the device with which the authentication timed out
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's
+ * mutex.
+ */
+void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
+
+/**
+ * cfg80211_rx_assoc_resp - notification of processed association response
+ * @dev: network device
+ * @bss: the BSS that association was requested with, ownership of the pointer
+ *	moves to cfg80211 in this call
+ * @buf: authentication frame (header + body)
+ * @len: length of the frame data
+ * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a.
+ *
+ * After being asked to associate via cfg80211_ops::assoc() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's mutex.
+ */
+void cfg80211_rx_assoc_resp(struct net_device *dev,
+			    struct cfg80211_bss *bss,
+			    const u8 *buf, size_t len,
+			    int uapsd_queues);
+
+/**
+ * cfg80211_assoc_timeout - notification of timed out association
+ * @dev: network device
+ * @bss: The BSS entry with which association timed out.
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's mutex.
+ */
+void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss);
+
+/**
+ * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
+ * @dev: network device
+ * @buf: 802.11 frame (header + body)
+ * @len: length of the frame data
+ *
+ * This function is called whenever deauthentication has been processed in
+ * station mode. This includes both received deauthentication frames and
+ * locally generated ones. This function may sleep. The caller must hold the
+ * corresponding wdev's mutex.
+ */
+void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
+
+/**
+ * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
+ * @dev: network device
+ * @buf: deauthentication frame (header + body)
+ * @len: length of the frame data
+ *
+ * This function is called whenever a received deauthentication or dissassoc
+ * frame has been dropped in station mode because of MFP being used but the
+ * frame was not protected. This function may sleep.
+ */
+void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev,
+				  const u8 *buf, size_t len);
+
+/**
+ * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
+ * @dev: network device
+ * @addr: The source MAC address of the frame
+ * @key_type: The key type that the received frame used
+ * @key_id: Key identifier (0..3). Can be -1 if missing.
+ * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
+ * @gfp: allocation flags
+ *
+ * This function is called whenever the local MAC detects a MIC failure in a
+ * received frame. This matches with MLME-MICHAELMICFAILURE.indication()
+ * primitive.
+ */
+void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
+				  enum nl80211_key_type key_type, int key_id,
+				  const u8 *tsc, gfp_t gfp);
+
+/**
+ * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
+ *
+ * @dev: network device
+ * @bssid: the BSSID of the IBSS joined
+ * @channel: the channel of the IBSS joined
+ * @gfp: allocation flags
+ *
+ * This function notifies cfg80211 that the device joined an IBSS or
+ * switched to a different BSSID. Before this function can be called,
+ * either a beacon has to have been received from the IBSS, or one of
+ * the cfg80211_inform_bss{,_frame} functions must have been called
+ * with the locally generated beacon -- this guarantees that there is
+ * always a scan result for this IBSS. cfg80211 will handle the rest.
+ */
+void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
+			  struct ieee80211_channel *channel, gfp_t gfp);
+
+/**
+ * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate
+ *
+ * @dev: network device
+ * @macaddr: the MAC address of the new candidate
+ * @ie: information elements advertised by the peer candidate
+ * @ie_len: lenght of the information elements buffer
+ * @gfp: allocation flags
+ *
+ * This function notifies cfg80211 that the mesh peer candidate has been
+ * detected, most likely via a beacon or, less likely, via a probe response.
+ * cfg80211 then sends a notification to userspace.
+ */
+void cfg80211_notify_new_peer_candidate(struct net_device *dev,
+		const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp);
+
+/**
+ * DOC: RFkill integration
+ *
+ * RFkill integration in cfg80211 is almost invisible to drivers,
+ * as cfg80211 automatically registers an rfkill instance for each
+ * wireless device it knows about. Soft kill is also translated
+ * into disconnecting and turning all interfaces off, drivers are
+ * expected to turn off the device when all interfaces are down.
+ *
+ * However, devices may have a hard RFkill line, in which case they
+ * also need to interact with the rfkill subsystem, via cfg80211.
+ * They can do this with a few helper functions documented here.
+ */
+
+/**
+ * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state
+ * @wiphy: the wiphy
+ * @blocked: block status
+ */
+void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked);
+
+/**
+ * wiphy_rfkill_start_polling - start polling rfkill
+ * @wiphy: the wiphy
+ */
+void wiphy_rfkill_start_polling(struct wiphy *wiphy);
+
+/**
+ * wiphy_rfkill_stop_polling - stop polling rfkill
+ * @wiphy: the wiphy
+ */
+void wiphy_rfkill_stop_polling(struct wiphy *wiphy);
+
+/**
+ * DOC: Vendor commands
+ *
+ * Occasionally, there are special protocol or firmware features that
+ * can't be implemented very openly. For this and similar cases, the
+ * vendor command functionality allows implementing the features with
+ * (typically closed-source) userspace and firmware, using nl80211 as
+ * the configuration mechanism.
+ *
+ * A driver supporting vendor commands must register them as an array
+ * in struct wiphy, with handlers for each one, each command has an
+ * OUI and sub command ID to identify it.
+ *
+ * Note that this feature should not be (ab)used to implement protocol
+ * features that could openly be shared across drivers. In particular,
+ * it must never be required to use vendor commands to implement any
+ * "normal" functionality that higher-level userspace like connection
+ * managers etc. need.
+ */
+
+struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
+					   enum nl80211_commands cmd,
+					   enum nl80211_attrs attr,
+					   int approxlen);
+
+struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
+					   struct wireless_dev *wdev,
+					   enum nl80211_commands cmd,
+					   enum nl80211_attrs attr,
+					   int vendor_event_idx,
+					   int approxlen, gfp_t gfp);
+
+void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp);
+
+/**
+ * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply
+ * @wiphy: the wiphy
+ * @approxlen: an upper bound of the length of the data that will
+ *	be put into the skb
+ *
+ * This function allocates and pre-fills an skb for a reply to
+ * a vendor command. Since it is intended for a reply, calling
+ * it outside of a vendor command's doit() operation is invalid.
+ *
+ * The returned skb is pre-filled with some identifying data in
+ * a way that any data that is put into the skb (with skb_put(),
+ * nla_put() or similar) will end up being within the
+ * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done
+ * with the skb is adding data for the corresponding userspace tool
+ * which can then read that data out of the vendor data attribute.
+ * You must not modify the skb in any other way.
+ *
+ * When done, call cfg80211_vendor_cmd_reply() with the skb and return
+ * its error code as the result of the doit() operation.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
+{
+	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR,
+					  NL80211_ATTR_VENDOR_DATA, approxlen);
+}
+
+/**
+ * cfg80211_vendor_cmd_reply - send the reply skb
+ * @skb: The skb, must have been allocated with
+ *	cfg80211_vendor_cmd_alloc_reply_skb()
+ *
+ * Since calling this function will usually be the last thing
+ * before returning from the vendor command doit() you should
+ * return the error code.  Note that this function consumes the
+ * skb regardless of the return value.
+ *
+ * Return: An error code or 0 on success.
+ */
+int cfg80211_vendor_cmd_reply(struct sk_buff *skb);
+
+/**
+ * cfg80211_vendor_event_alloc - allocate vendor-specific event skb
+ * @wiphy: the wiphy
+ * @wdev: the wireless device
+ * @event_idx: index of the vendor event in the wiphy's vendor_events
+ * @approxlen: an upper bound of the length of the data that will
+ *	be put into the skb
+ * @gfp: allocation flags
+ *
+ * This function allocates and pre-fills an skb for an event on the
+ * vendor-specific multicast group.
+ *
+ * If wdev != NULL, both the ifindex and identifier of the specified
+ * wireless device are added to the event message before the vendor data
+ * attribute.
+ *
+ * When done filling the skb, call cfg80211_vendor_event() with the
+ * skb to send the event.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev,
+			     int approxlen, int event_idx, gfp_t gfp)
+{
+	return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR,
+					  NL80211_ATTR_VENDOR_DATA,
+					  event_idx, approxlen, gfp);
+}
+
+/**
+ * cfg80211_vendor_event - send the event
+ * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc()
+ * @gfp: allocation flags
+ *
+ * This function sends the given @skb, which must have been allocated
+ * by cfg80211_vendor_event_alloc(), as an event. It always consumes it.
+ */
+static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp)
+{
+	__cfg80211_send_event_skb(skb, gfp);
+}
+
+#ifdef CONFIG_NL80211_TESTMODE
+/**
+ * DOC: Test mode
+ *
+ * Test mode is a set of utility functions to allow drivers to
+ * interact with driver-specific tools to aid, for instance,
+ * factory programming.
+ *
+ * This chapter describes how drivers interact with it, for more
+ * information see the nl80211 book's chapter on it.
+ */
+
+/**
+ * cfg80211_testmode_alloc_reply_skb - allocate testmode reply
+ * @wiphy: the wiphy
+ * @approxlen: an upper bound of the length of the data that will
+ *	be put into the skb
+ *
+ * This function allocates and pre-fills an skb for a reply to
+ * the testmode command. Since it is intended for a reply, calling
+ * it outside of the @testmode_cmd operation is invalid.
+ *
+ * The returned skb is pre-filled with the wiphy index and set up in
+ * a way that any data that is put into the skb (with skb_put(),
+ * nla_put() or similar) will end up being within the
+ * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done
+ * with the skb is adding data for the corresponding userspace tool
+ * which can then read that data out of the testdata attribute. You
+ * must not modify the skb in any other way.
+ *
+ * When done, call cfg80211_testmode_reply() with the skb and return
+ * its error code as the result of the @testmode_cmd operation.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
+{
+	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE,
+					  NL80211_ATTR_TESTDATA, approxlen);
+}
+
+/**
+ * cfg80211_testmode_reply - send the reply skb
+ * @skb: The skb, must have been allocated with
+ *	cfg80211_testmode_alloc_reply_skb()
+ *
+ * Since calling this function will usually be the last thing
+ * before returning from the @testmode_cmd you should return
+ * the error code.  Note that this function consumes the skb
+ * regardless of the return value.
+ *
+ * Return: An error code or 0 on success.
+ */
+static inline int cfg80211_testmode_reply(struct sk_buff *skb)
+{
+	return cfg80211_vendor_cmd_reply(skb);
+}
+
+/**
+ * cfg80211_testmode_alloc_event_skb - allocate testmode event
+ * @wiphy: the wiphy
+ * @approxlen: an upper bound of the length of the data that will
+ *	be put into the skb
+ * @gfp: allocation flags
+ *
+ * This function allocates and pre-fills an skb for an event on the
+ * testmode multicast group.
+ *
+ * The returned skb is set up in the same way as with
+ * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As
+ * there, you should simply add data to it that will then end up in the
+ * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb
+ * in any other way.
+ *
+ * When done filling the skb, call cfg80211_testmode_event() with the
+ * skb to send the event.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp)
+{
+	return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE,
+					  NL80211_ATTR_TESTDATA, -1,
+					  approxlen, gfp);
+}
+
+/**
+ * cfg80211_testmode_event - send the event
+ * @skb: The skb, must have been allocated with
+ *	cfg80211_testmode_alloc_event_skb()
+ * @gfp: allocation flags
+ *
+ * This function sends the given @skb, which must have been allocated
+ * by cfg80211_testmode_alloc_event_skb(), as an event. It always
+ * consumes it.
+ */
+static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
+{
+	__cfg80211_send_event_skb(skb, gfp);
+}
+
+#define CFG80211_TESTMODE_CMD(cmd)	.testmode_cmd = (cmd),
+#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
+#else
+#define CFG80211_TESTMODE_CMD(cmd)
+#define CFG80211_TESTMODE_DUMP(cmd)
+#endif
+
+/**
+ * cfg80211_connect_result - notify cfg80211 of connection result
+ *
+ * @dev: network device
+ * @bssid: the BSSID of the AP
+ * @req_ie: association request IEs (maybe be %NULL)
+ * @req_ie_len: association request IEs length
+ * @resp_ie: association response IEs (may be %NULL)
+ * @resp_ie_len: assoc response IEs length
+ * @status: status code, 0 for successful connection, use
+ *	%WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you
+ *	the real status code for failures.
+ * @gfp: allocation flags
+ *
+ * It should be called by the underlying driver whenever connect() has
+ * succeeded.
+ */
+void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+			     const u8 *req_ie, size_t req_ie_len,
+			     const u8 *resp_ie, size_t resp_ie_len,
+			     u16 status, gfp_t gfp);
+
+/**
+ * cfg80211_roamed - notify cfg80211 of roaming
+ *
+ * @dev: network device
+ * @channel: the channel of the new AP
+ * @bssid: the BSSID of the new AP
+ * @req_ie: association request IEs (maybe be %NULL)
+ * @req_ie_len: association request IEs length
+ * @resp_ie: association response IEs (may be %NULL)
+ * @resp_ie_len: assoc response IEs length
+ * @gfp: allocation flags
+ *
+ * It should be called by the underlying driver whenever it roamed
+ * from one AP to another while connected.
+ */
+void cfg80211_roamed(struct net_device *dev,
+		     struct ieee80211_channel *channel,
+		     const u8 *bssid,
+		     const u8 *req_ie, size_t req_ie_len,
+		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
+
+/**
+ * cfg80211_roamed_bss - notify cfg80211 of roaming
+ *
+ * @dev: network device
+ * @bss: entry of bss to which STA got roamed
+ * @req_ie: association request IEs (maybe be %NULL)
+ * @req_ie_len: association request IEs length
+ * @resp_ie: association response IEs (may be %NULL)
+ * @resp_ie_len: assoc response IEs length
+ * @gfp: allocation flags
+ *
+ * This is just a wrapper to notify cfg80211 of roaming event with driver
+ * passing bss to avoid a race in timeout of the bss entry. It should be
+ * called by the underlying driver whenever it roamed from one AP to another
+ * while connected. Drivers which have roaming implemented in firmware
+ * may use this function to avoid a race in bss entry timeout where the bss
+ * entry of the new AP is seen in the driver, but gets timed out by the time
+ * it is accessed in __cfg80211_roamed() due to delay in scheduling
+ * rdev->event_work. In case of any failures, the reference is released
+ * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise,
+ * it will be released while diconneting from the current bss.
+ */
+void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss,
+			 const u8 *req_ie, size_t req_ie_len,
+			 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
+
+/**
+ * cfg80211_disconnected - notify cfg80211 that connection was dropped
+ *
+ * @dev: network device
+ * @ie: information elements of the deauth/disassoc frame (may be %NULL)
+ * @ie_len: length of IEs
+ * @reason: reason code for the disconnection, set it to 0 if unknown
+ * @gfp: allocation flags
+ *
+ * After it calls this function, the driver should enter an idle state
+ * and not try to connect to any AP any more.
+ */
+void cfg80211_disconnected(struct net_device *dev, u16 reason,
+			   const u8 *ie, size_t ie_len, gfp_t gfp);
+
+/**
+ * cfg80211_ready_on_channel - notification of remain_on_channel start
+ * @wdev: wireless device
+ * @cookie: the request cookie
+ * @chan: The current channel (from remain_on_channel request)
+ * @duration: Duration in milliseconds that the driver intents to remain on the
+ *	channel
+ * @gfp: allocation flags
+ */
+void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
+			       struct ieee80211_channel *chan,
+			       unsigned int duration, gfp_t gfp);
+
+/**
+ * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
+ * @wdev: wireless device
+ * @cookie: the request cookie
+ * @chan: The current channel (from remain_on_channel request)
+ * @gfp: allocation flags
+ */
+void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
+					struct ieee80211_channel *chan,
+					gfp_t gfp);
+
+
+/**
+ * cfg80211_new_sta - notify userspace about station
+ *
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @sinfo: the station information
+ * @gfp: allocation flags
+ */
+void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
+		      struct station_info *sinfo, gfp_t gfp);
+
+/**
+ * cfg80211_del_sta_sinfo - notify userspace about deletion of a station
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @sinfo: the station information/statistics
+ * @gfp: allocation flags
+ */
+void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
+			    struct station_info *sinfo, gfp_t gfp);
+
+/**
+ * cfg80211_del_sta - notify userspace about deletion of a station
+ *
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @gfp: allocation flags
+ */
+static inline void cfg80211_del_sta(struct net_device *dev,
+				    const u8 *mac_addr, gfp_t gfp)
+{
+	cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp);
+}
+
+/**
+ * cfg80211_conn_failed - connection request failed notification
+ *
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @reason: the reason for connection failure
+ * @gfp: allocation flags
+ *
+ * Whenever a station tries to connect to an AP and if the station
+ * could not connect to the AP as the AP has rejected the connection
+ * for some reasons, this function is called.
+ *
+ * The reason for connection failure can be any of the value from
+ * nl80211_connect_failed_reason enum
+ */
+void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
+			  enum nl80211_connect_failed_reason reason,
+			  gfp_t gfp);
+
+/**
+ * cfg80211_rx_mgmt - notification of received, unprocessed management frame
+ * @wdev: wireless device receiving the frame
+ * @freq: Frequency on which the frame was received in MHz
+ * @sig_dbm: signal strength in mBm, or 0 if unknown
+ * @buf: Management frame (header + body)
+ * @len: length of the frame data
+ * @flags: flags, as defined in enum nl80211_rxmgmt_flags
+ *
+ * This function is called whenever an Action frame is received for a station
+ * mode interface, but is not processed in kernel.
+ *
+ * Return: %true if a user space application has registered for this frame.
+ * For action frames, that makes it responsible for rejecting unrecognized
+ * action frames; %false otherwise, in which case for action frames the
+ * driver is responsible for rejecting the frame.
+ */
+bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
+		      const u8 *buf, size_t len, u32 flags);
+
+/**
+ * cfg80211_mgmt_tx_status - notification of TX status for management frame
+ * @wdev: wireless device receiving the frame
+ * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
+ * @buf: Management frame (header + body)
+ * @len: length of the frame data
+ * @ack: Whether frame was acknowledged
+ * @gfp: context flags
+ *
+ * This function is called whenever a management frame was requested to be
+ * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the
+ * transmission attempt.
+ */
+void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
+			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
+
+
+/**
+ * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event
+ * @dev: network device
+ * @rssi_event: the triggered RSSI event
+ * @gfp: context flags
+ *
+ * This function is called when a configured connection quality monitoring
+ * rssi threshold reached event occurs.
+ */
+void cfg80211_cqm_rssi_notify(struct net_device *dev,
+			      enum nl80211_cqm_rssi_threshold_event rssi_event,
+			      gfp_t gfp);
+
+/**
+ * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer
+ * @dev: network device
+ * @peer: peer's MAC address
+ * @num_packets: how many packets were lost -- should be a fixed threshold
+ *	but probably no less than maybe 50, or maybe a throughput dependent
+ *	threshold (to account for temporary interference)
+ * @gfp: context flags
+ */
+void cfg80211_cqm_pktloss_notify(struct net_device *dev,
+				 const u8 *peer, u32 num_packets, gfp_t gfp);
+
+/**
+ * cfg80211_cqm_txe_notify - TX error rate event
+ * @dev: network device
+ * @peer: peer's MAC address
+ * @num_packets: how many packets were lost
+ * @rate: % of packets which failed transmission
+ * @intvl: interval (in s) over which the TX failure threshold was breached.
+ * @gfp: context flags
+ *
+ * Notify userspace when configured % TX failures over number of packets in a
+ * given interval is exceeded.
+ */
+void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer,
+			     u32 num_packets, u32 rate, u32 intvl, gfp_t gfp);
+
+/**
+ * cfg80211_cqm_beacon_loss_notify - beacon loss event
+ * @dev: network device
+ * @gfp: context flags
+ *
+ * Notify userspace about beacon loss from the connected AP.
+ */
+void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp);
+
+/**
+ * cfg80211_radar_event - radar detection event
+ * @wiphy: the wiphy
+ * @chandef: chandef for the current channel
+ * @gfp: context flags
+ *
+ * This function is called when a radar is detected on the current chanenl.
+ */
+void cfg80211_radar_event(struct wiphy *wiphy,
+			  struct cfg80211_chan_def *chandef, gfp_t gfp);
+
+/**
+ * cfg80211_cac_event - Channel availability check (CAC) event
+ * @netdev: network device
+ * @chandef: chandef for the current channel
+ * @event: type of event
+ * @gfp: context flags
+ *
+ * This function is called when a Channel availability check (CAC) is finished
+ * or aborted. This must be called to notify the completion of a CAC process,
+ * also by full-MAC drivers.
+ */
+void cfg80211_cac_event(struct net_device *netdev,
+			const struct cfg80211_chan_def *chandef,
+			enum nl80211_radar_event event, gfp_t gfp);
+
+
+/**
+ * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
+ * @dev: network device
+ * @bssid: BSSID of AP (to avoid races)
+ * @replay_ctr: new replay counter
+ * @gfp: allocation flags
+ */
+void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
+			       const u8 *replay_ctr, gfp_t gfp);
+
+/**
+ * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate
+ * @dev: network device
+ * @index: candidate index (the smaller the index, the higher the priority)
+ * @bssid: BSSID of AP
+ * @preauth: Whether AP advertises support for RSN pre-authentication
+ * @gfp: allocation flags
+ */
+void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
+				     const u8 *bssid, bool preauth, gfp_t gfp);
+
+/**
+ * cfg80211_rx_spurious_frame - inform userspace about a spurious frame
+ * @dev: The device the frame matched to
+ * @addr: the transmitter address
+ * @gfp: context flags
+ *
+ * This function is used in AP mode (only!) to inform userspace that
+ * a spurious class 3 frame was received, to be able to deauth the
+ * sender.
+ * Return: %true if the frame was passed to userspace (or this failed
+ * for a reason other than not having a subscription.)
+ */
+bool cfg80211_rx_spurious_frame(struct net_device *dev,
+				const u8 *addr, gfp_t gfp);
+
+/**
+ * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame
+ * @dev: The device the frame matched to
+ * @addr: the transmitter address
+ * @gfp: context flags
+ *
+ * This function is used in AP mode (only!) to inform userspace that
+ * an associated station sent a 4addr frame but that wasn't expected.
+ * It is allowed and desirable to send this event only once for each
+ * station to avoid event flooding.
+ * Return: %true if the frame was passed to userspace (or this failed
+ * for a reason other than not having a subscription.)
+ */
+bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
+					const u8 *addr, gfp_t gfp);
+
+/**
+ * cfg80211_probe_status - notify userspace about probe status
+ * @dev: the device the probe was sent on
+ * @addr: the address of the peer
+ * @cookie: the cookie filled in @probe_client previously
+ * @acked: indicates whether probe was acked or not
+ * @gfp: allocation flags
+ */
+void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
+			   u64 cookie, bool acked, gfp_t gfp);
+
+/**
+ * cfg80211_report_obss_beacon - report beacon from other APs
+ * @wiphy: The wiphy that received the beacon
+ * @frame: the frame
+ * @len: length of the frame
+ * @freq: frequency the frame was received on
+ * @sig_dbm: signal strength in mBm, or 0 if unknown
+ *
+ * Use this function to report to userspace when a beacon was
+ * received. It is not useful to call this when there is no
+ * netdev that is in AP/GO mode.
+ */
+void cfg80211_report_obss_beacon(struct wiphy *wiphy,
+				 const u8 *frame, size_t len,
+				 int freq, int sig_dbm);
+
+/**
+ * cfg80211_reg_can_beacon - check if beaconing is allowed
+ * @wiphy: the wiphy
+ * @chandef: the channel definition
+ * @iftype: interface type
+ *
+ * Return: %true if there is no secondary channel or the secondary channel(s)
+ * can be used for beaconing (i.e. is not a radar channel etc.)
+ */
+bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
+			     struct cfg80211_chan_def *chandef,
+			     enum nl80211_iftype iftype);
+
+/*
+ * cfg80211_ch_switch_notify - update wdev channel and notify userspace
+ * @dev: the device which switched channels
+ * @chandef: the new channel definition
+ *
+ * Caller must acquire wdev_lock, therefore must only be called from sleepable
+ * driver context!
+ */
+void cfg80211_ch_switch_notify(struct net_device *dev,
+			       struct cfg80211_chan_def *chandef);
+
+/*
+ * cfg80211_ch_switch_started_notify - notify channel switch start
+ * @dev: the device on which the channel switch started
+ * @chandef: the future channel definition
+ * @count: the number of TBTTs until the channel switch happens
+ *
+ * Inform the userspace about the channel switch that has just
+ * started, so that it can take appropriate actions (eg. starting
+ * channel switch on other vifs), if necessary.
+ */
+void cfg80211_ch_switch_started_notify(struct net_device *dev,
+				       struct cfg80211_chan_def *chandef,
+				       u8 count);
+
+/**
+ * ieee80211_operating_class_to_band - convert operating class to band
+ *
+ * @operating_class: the operating class to convert
+ * @band: band pointer to fill
+ *
+ * Returns %true if the conversion was successful, %false otherwise.
+ */
+bool ieee80211_operating_class_to_band(u8 operating_class,
+				       enum ieee80211_band *band);
+
+/**
+ * ieee80211_chandef_to_operating_class - convert chandef to operation class
+ *
+ * @chandef: the chandef to convert
+ * @op_class: a pointer to the resulting operating class
+ *
+ * Returns %true if the conversion was successful, %false otherwise.
+ */
+bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef,
+					  u8 *op_class);
+
+/*
+ * cfg80211_tdls_oper_request - request userspace to perform TDLS operation
+ * @dev: the device on which the operation is requested
+ * @peer: the MAC address of the peer device
+ * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or
+ *	NL80211_TDLS_TEARDOWN)
+ * @reason_code: the reason code for teardown request
+ * @gfp: allocation flags
+ *
+ * This function is used to request userspace to perform TDLS operation that
+ * requires knowledge of keys, i.e., link setup or teardown when the AP
+ * connection uses encryption. This is optional mechanism for the driver to use
+ * if it can automatically determine when a TDLS link could be useful (e.g.,
+ * based on traffic and signal strength for a peer).
+ */
+void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
+				enum nl80211_tdls_operation oper,
+				u16 reason_code, gfp_t gfp);
+
+/*
+ * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
+ * @rate: given rate_info to calculate bitrate from
+ *
+ * return 0 if MCS index >= 32
+ */
+u32 cfg80211_calculate_bitrate(struct rate_info *rate);
+
+/**
+ * cfg80211_unregister_wdev - remove the given wdev
+ * @wdev: struct wireless_dev to remove
+ *
+ * Call this function only for wdevs that have no netdev assigned,
+ * e.g. P2P Devices. It removes the device from the list so that
+ * it can no longer be used. It is necessary to call this function
+ * even when cfg80211 requests the removal of the interface by
+ * calling the del_virtual_intf() callback. The function must also
+ * be called when the driver wishes to unregister the wdev, e.g.
+ * when the device is unbound from the driver.
+ *
+ * Requires the RTNL to be held.
+ */
+void cfg80211_unregister_wdev(struct wireless_dev *wdev);
+
+/**
+ * struct cfg80211_ft_event - FT Information Elements
+ * @ies: FT IEs
+ * @ies_len: length of the FT IE in bytes
+ * @target_ap: target AP's MAC address
+ * @ric_ies: RIC IE
+ * @ric_ies_len: length of the RIC IE in bytes
+ */
+struct cfg80211_ft_event_params {
+	const u8 *ies;
+	size_t ies_len;
+	const u8 *target_ap;
+	const u8 *ric_ies;
+	size_t ric_ies_len;
+};
+
+/**
+ * cfg80211_ft_event - notify userspace about FT IE and RIC IE
+ * @netdev: network device
+ * @ft_event: IE information
+ */
+void cfg80211_ft_event(struct net_device *netdev,
+		       struct cfg80211_ft_event_params *ft_event);
+
+/**
+ * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer
+ * @ies: the input IE buffer
+ * @len: the input length
+ * @attr: the attribute ID to find
+ * @buf: output buffer, can be %NULL if the data isn't needed, e.g.
+ *	if the function is only called to get the needed buffer size
+ * @bufsize: size of the output buffer
+ *
+ * The function finds a given P2P attribute in the (vendor) IEs and
+ * copies its contents to the given buffer.
+ *
+ * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is
+ * malformed or the attribute can't be found (respectively), or the
+ * length of the found attribute (which can be zero).
+ */
+int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
+			  enum ieee80211_p2p_attr_id attr,
+			  u8 *buf, unsigned int bufsize);
+
+/**
+ * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC)
+ * @ies: the IE buffer
+ * @ielen: the length of the IE buffer
+ * @ids: an array with element IDs that are allowed before
+ *	the split
+ * @n_ids: the size of the element ID array
+ * @after_ric: array IE types that come after the RIC element
+ * @n_after_ric: size of the @after_ric array
+ * @offset: offset where to start splitting in the buffer
+ *
+ * This function splits an IE buffer by updating the @offset
+ * variable to point to the location where the buffer should be
+ * split.
+ *
+ * It assumes that the given IE buffer is well-formed, this
+ * has to be guaranteed by the caller!
+ *
+ * It also assumes that the IEs in the buffer are ordered
+ * correctly, if not the result of using this function will not
+ * be ordered correctly either, i.e. it does no reordering.
+ *
+ * The function returns the offset where the next part of the
+ * buffer starts, which may be @ielen if the entire (remainder)
+ * of the buffer should be used.
+ */
+size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen,
+			      const u8 *ids, int n_ids,
+			      const u8 *after_ric, int n_after_ric,
+			      size_t offset);
+
+/**
+ * ieee80211_ie_split - split an IE buffer according to ordering
+ * @ies: the IE buffer
+ * @ielen: the length of the IE buffer
+ * @ids: an array with element IDs that are allowed before
+ *	the split
+ * @n_ids: the size of the element ID array
+ * @offset: offset where to start splitting in the buffer
+ *
+ * This function splits an IE buffer by updating the @offset
+ * variable to point to the location where the buffer should be
+ * split.
+ *
+ * It assumes that the given IE buffer is well-formed, this
+ * has to be guaranteed by the caller!
+ *
+ * It also assumes that the IEs in the buffer are ordered
+ * correctly, if not the result of using this function will not
+ * be ordered correctly either, i.e. it does no reordering.
+ *
+ * The function returns the offset where the next part of the
+ * buffer starts, which may be @ielen if the entire (remainder)
+ * of the buffer should be used.
+ */
+size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
+			  const u8 *ids, int n_ids, size_t offset);
+
+/**
+ * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN
+ * @wdev: the wireless device reporting the wakeup
+ * @wakeup: the wakeup report
+ * @gfp: allocation flags
+ *
+ * This function reports that the given device woke up. If it
+ * caused the wakeup, report the reason(s), otherwise you may
+ * pass %NULL as the @wakeup parameter to advertise that something
+ * else caused the wakeup.
+ */
+void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
+				   struct cfg80211_wowlan_wakeup *wakeup,
+				   gfp_t gfp);
+
+/**
+ * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
+ *
+ * @wdev: the wireless device for which critical protocol is stopped.
+ * @gfp: allocation flags
+ *
+ * This function can be called by the driver to indicate it has reverted
+ * operation back to normal. One reason could be that the duration given
+ * by .crit_proto_start() has expired.
+ */
+void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp);
+
+/**
+ * ieee80211_get_num_supported_channels - get number of channels device has
+ * @wiphy: the wiphy
+ *
+ * Return: the number of channels supported by the device.
+ */
+unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy);
+
+/**
+ * cfg80211_check_combinations - check interface combinations
+ *
+ * @wiphy: the wiphy
+ * @num_different_channels: the number of different channels we want
+ *	to use for verification
+ * @radar_detect: a bitmap where each bit corresponds to a channel
+ *	width where radar detection is needed, as in the definition of
+ *	&struct ieee80211_iface_combination.@radar_detect_widths
+ * @iftype_num: array with the numbers of interfaces of each interface
+ *	type.  The index is the interface type as specified in &enum
+ *	nl80211_iftype.
+ *
+ * This function can be called by the driver to check whether a
+ * combination of interfaces and their types are allowed according to
+ * the interface combinations.
+ */
+int cfg80211_check_combinations(struct wiphy *wiphy,
+				const int num_different_channels,
+				const u8 radar_detect,
+				const int iftype_num[NUM_NL80211_IFTYPES]);
+
+/**
+ * cfg80211_iter_combinations - iterate over matching combinations
+ *
+ * @wiphy: the wiphy
+ * @num_different_channels: the number of different channels we want
+ *	to use for verification
+ * @radar_detect: a bitmap where each bit corresponds to a channel
+ *	width where radar detection is needed, as in the definition of
+ *	&struct ieee80211_iface_combination.@radar_detect_widths
+ * @iftype_num: array with the numbers of interfaces of each interface
+ *	type.  The index is the interface type as specified in &enum
+ *	nl80211_iftype.
+ * @iter: function to call for each matching combination
+ * @data: pointer to pass to iter function
+ *
+ * This function can be called by the driver to check what possible
+ * combinations it fits in at a given moment, e.g. for channel switching
+ * purposes.
+ */
+int cfg80211_iter_combinations(struct wiphy *wiphy,
+			       const int num_different_channels,
+			       const u8 radar_detect,
+			       const int iftype_num[NUM_NL80211_IFTYPES],
+			       void (*iter)(const struct ieee80211_iface_combination *c,
+					    void *data),
+			       void *data);
+
+/*
+ * cfg80211_stop_iface - trigger interface disconnection
+ *
+ * @wiphy: the wiphy
+ * @wdev: wireless device
+ * @gfp: context flags
+ *
+ * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA
+ * disconnected.
+ *
+ * Note: This doesn't need any locks and is asynchronous.
+ */
+void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev,
+			 gfp_t gfp);
+
+/**
+ * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy
+ * @wiphy: the wiphy to shut down
+ *
+ * This function shuts down all interfaces belonging to this wiphy by
+ * calling dev_close() (and treating non-netdev interfaces as needed).
+ * It shouldn't really be used unless there are some fatal device errors
+ * that really can't be recovered in any other way.
+ *
+ * Callers must hold the RTNL and be able to deal with callbacks into
+ * the driver while the function is running.
+ */
+void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy);
+
+/**
+ * wiphy_ext_feature_set - set the extended feature flag
+ *
+ * @wiphy: the wiphy to modify.
+ * @ftidx: extended feature bit index.
+ *
+ * The extended features are flagged in multiple bytes (see
+ * &struct wiphy.@ext_features)
+ */
+static inline void wiphy_ext_feature_set(struct wiphy *wiphy,
+					 enum nl80211_ext_feature_index ftidx)
+{
+	u8 *ft_byte;
+
+	ft_byte = &wiphy->ext_features[ftidx / 8];
+	*ft_byte |= BIT(ftidx % 8);
+}
+
+/**
+ * wiphy_ext_feature_isset - check the extended feature flag
+ *
+ * @wiphy: the wiphy to modify.
+ * @ftidx: extended feature bit index.
+ *
+ * The extended features are flagged in multiple bytes (see
+ * &struct wiphy.@ext_features)
+ */
+static inline bool
+wiphy_ext_feature_isset(struct wiphy *wiphy,
+			enum nl80211_ext_feature_index ftidx)
+{
+	u8 ft_byte;
+
+	ft_byte = wiphy->ext_features[ftidx / 8];
+	return (ft_byte & BIT(ftidx % 8)) != 0;
+}
+
+/* ethtool helper */
+void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info);
+
+/* Logging, debugging and troubleshooting/diagnostic helpers. */
+
+/* wiphy_printk helpers, similar to dev_printk */
+
+#define wiphy_printk(level, wiphy, format, args...)		\
+	dev_printk(level, &(wiphy)->dev, format, ##args)
+#define wiphy_emerg(wiphy, format, args...)			\
+	dev_emerg(&(wiphy)->dev, format, ##args)
+#define wiphy_alert(wiphy, format, args...)			\
+	dev_alert(&(wiphy)->dev, format, ##args)
+#define wiphy_crit(wiphy, format, args...)			\
+	dev_crit(&(wiphy)->dev, format, ##args)
+#define wiphy_err(wiphy, format, args...)			\
+	dev_err(&(wiphy)->dev, format, ##args)
+#define wiphy_warn(wiphy, format, args...)			\
+	dev_warn(&(wiphy)->dev, format, ##args)
+#define wiphy_notice(wiphy, format, args...)			\
+	dev_notice(&(wiphy)->dev, format, ##args)
+#define wiphy_info(wiphy, format, args...)			\
+	dev_info(&(wiphy)->dev, format, ##args)
+
+#define wiphy_debug(wiphy, format, args...)			\
+	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
+
+#define wiphy_dbg(wiphy, format, args...)			\
+	dev_dbg(&(wiphy)->dev, format, ##args)
+
+#if defined(VERBOSE_DEBUG)
+#define wiphy_vdbg	wiphy_dbg
+#else
+#define wiphy_vdbg(wiphy, format, args...)				\
+({									\
+	if (0)								\
+		wiphy_printk(KERN_DEBUG, wiphy, format, ##args);	\
+	0;								\
+})
+#endif
+
+/*
+ * wiphy_WARN() acts like wiphy_printk(), but with the key difference
+ * of using a WARN/WARN_ON to get the message out, including the
+ * file/line information and a backtrace.
+ */
+#define wiphy_WARN(wiphy, format, args...)			\
+	WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args);
+
+#endif /* __NET_CFG80211_H */