cfg80211.h 136.8 KB
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#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
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/*
 * 802.11 device and configuration interface
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 *
 * 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.
 */
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#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
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#include <linux/bug.h>
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#include <linux/netlink.h>
#include <linux/skbuff.h>
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#include <linux/nl80211.h>
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#include <linux/if_ether.h>
#include <linux/ieee80211.h>
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#include <net/regulatory.h>

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/**
 * 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.
 */

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struct wiphy;

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/*
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 * wireless hardware capability structures
 */

/**
 * enum ieee80211_band - supported frequency bands
 *
 * The bands are assigned this way because the supported
 * bitrates differ in these bands.
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 *
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 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
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 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz)
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 * @IEEE80211_NUM_BANDS: number of defined bands
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 */
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enum ieee80211_band {
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	IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
	IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
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	IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ,
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	/* keep last */
	IEEE80211_NUM_BANDS
};
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/**
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 * enum ieee80211_channel_flags - channel flags
 *
 * Channel flags set by the regulatory control code.
 *
 * @IEEE80211_CHAN_DISABLED: This channel is disabled.
 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted
 *	on this channel.
 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel.
 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
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 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
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 * 	is not permitted.
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 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
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 * 	is not permitted.
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 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
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 */
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enum ieee80211_channel_flags {
	IEEE80211_CHAN_DISABLED		= 1<<0,
	IEEE80211_CHAN_PASSIVE_SCAN	= 1<<1,
	IEEE80211_CHAN_NO_IBSS		= 1<<2,
	IEEE80211_CHAN_RADAR		= 1<<3,
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	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
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	IEEE80211_CHAN_NO_OFDM		= 1<<6,
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};

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#define IEEE80211_CHAN_NO_HT40 \
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	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
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/**
 * 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)
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 * @max_reg_power: maximum regulatory transmission power (in dBm)
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 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
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 *	to enable this, this is useful only on 5 GHz band.
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 * @orig_mag: internal use
 * @orig_mpwr: internal use
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 */
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struct ieee80211_channel {
	enum ieee80211_band band;
	u16 center_freq;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
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	int max_reg_power;
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	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
};

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/**
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 * 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.
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 */
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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,
};
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/**
 * 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;
};
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/**
 * 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;
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};

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/**
 * 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;
};

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/**
 * 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
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 * @ht_cap: HT capabilities in this band
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 * @vht_cap: VHT capabilities in this band
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 */
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;
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	struct ieee80211_sta_vht_cap vht_cap;
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};
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/*
 * Wireless hardware/device configuration structures and methods
 */
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/**
 * 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.
 */

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/**
 * struct vif_params - describes virtual interface parameters
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 * @use_4addr: use 4-address frames
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 * @macaddr: address to use for this virtual interface. This will only
 * 	be used for non-netdevice interfaces. If this parameter is set
 * 	to zero address the driver may determine the address as needed.
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 */
struct vif_params {
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       int use_4addr;
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       u8 macaddr[ETH_ALEN];
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};
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/**
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 * 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.
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 * @seq_len: length of @seq.
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 */
struct key_params {
	u8 *key;
	u8 *seq;
	int key_len;
	int seq_len;
	u32 cipher;
};

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/**
 * struct cfg80211_chan_def - channel definition
 * @chan: the (control) channel
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 * @width: channel width
 * @center_freq1: center frequency of first segment
 * @center_freq2: center frequency of second segment
 *	(only with 80+80 MHz)
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 */
struct cfg80211_chan_def {
	struct ieee80211_channel *chan;
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	enum nl80211_chan_width width;
	u32 center_freq1;
	u32 center_freq2;
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};

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/**
 * cfg80211_get_chandef_type - return old channel type from chandef
 * @chandef: the channel definition
 *
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 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given
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 * chandef, which must have a bandwidth allowing this conversion.
 */
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static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
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	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;
	}
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}

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/**
 * 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
 *
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 * Return: %true if the channels defined by the channel definitions are
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 * 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
 *
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 * Return: %NULL if the given channel definitions are incompatible,
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 * chandef1 or chandef2 otherwise.
 */
const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
			    const struct cfg80211_chan_def *chandef2);

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/**
 * cfg80211_chandef_valid - check if a channel definition is valid
 * @chandef: the channel definition to check
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 * Return: %true if the channel definition is valid. %false otherwise.
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 */
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
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 * @prohibited_flags: the regulatory channel flags that must not be set
 * Return: %true if secondary channels are usable. %false otherwise.
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 */
bool cfg80211_chandef_usable(struct wiphy *wiphy,
			     const struct cfg80211_chan_def *chandef,
			     u32 prohibited_flags);

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/**
 * enum survey_info_flags - survey information flags
 *
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 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
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 * @SURVEY_INFO_IN_USE: channel is currently being used
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 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in
 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in
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 *
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 * 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 = 1<<0,
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	SURVEY_INFO_IN_USE = 1<<1,
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	SURVEY_INFO_CHANNEL_TIME = 1<<2,
	SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3,
	SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4,
	SURVEY_INFO_CHANNEL_TIME_RX = 1<<5,
	SURVEY_INFO_CHANNEL_TIME_TX = 1<<6,
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};

/**
 * struct survey_info - channel survey response
 *
 * @channel: the channel this survey record reports, mandatory
 * @filled: bitflag of flags from &enum survey_info_flags
 * @noise: channel noise in dBm. This and all following fields are
 *     optional
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 * @channel_time: amount of time in ms the radio spent on the channel
 * @channel_time_busy: amount of time the primary channel was sensed busy
 * @channel_time_ext_busy: amount of time the extension channel was sensed busy
 * @channel_time_rx: amount of time the radio spent receiving data
 * @channel_time_tx: amount of time the radio spent transmitting data
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 *
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 * Used by dump_survey() to report back per-channel survey information.
 *
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 * This structure can later be expanded with things like
 * channel duty cycle etc.
 */
struct survey_info {
	struct ieee80211_channel *channel;
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	u64 channel_time;
	u64 channel_time_busy;
	u64 channel_time_ext_busy;
	u64 channel_time_rx;
	u64 channel_time_tx;
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	u32 filled;
	s8 noise;
};

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/**
 * 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;
};

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/**
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 * struct cfg80211_beacon_data - beacon data
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 * @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
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 * @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
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 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
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 */
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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;
};

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struct mac_address {
	u8 addr[ETH_ALEN];
};

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/**
 * 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[];
};

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/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
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 * @chandef: defines the channel to use
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 * @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)
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 * @inactivity_timeout: time in seconds to determine station's inactivity.
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 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
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 * @acl: ACL configuration used by the drivers which has support for
 *	MAC address based access control
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 */
struct cfg80211_ap_settings {
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	struct cfg80211_chan_def chandef;
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	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
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	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
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	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
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	int inactivity_timeout;
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	u8 p2p_ctwindow;
	bool p2p_opp_ps;
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	const struct cfg80211_acl_data *acl;
588 589
};

590 591 592 593 594
/**
 * enum plink_action - actions to perform in mesh peers
 *
 * @PLINK_ACTION_INVALID: action 0 is reserved
 * @PLINK_ACTION_OPEN: start mesh peer link establishment
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 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer
596 597 598 599 600 601 602
 */
enum plink_actions {
	PLINK_ACTION_INVALID,
	PLINK_ACTION_OPEN,
	PLINK_ACTION_BLOCK,
};

603 604 605 606 607 608 609 610 611 612 613
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
 *
 * 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),
};

614 615 616 617 618 619 620 621 622
/**
 * 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
623 624 625 626
 * @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_...))
627 628
 * @listen_interval: listen interval or -1 for no change
 * @aid: AID or zero for no change
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 * @plink_action: plink action to take
630
 * @plink_state: set the peer link state for a station
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631
 * @ht_capa: HT capabilities of station
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 * @vht_capa: VHT capabilities of station
633 634 635 636
 * @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)
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637 638 639
 * @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
640 641
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
642 643 644 645
 */
struct station_parameters {
	u8 *supported_rates;
	struct net_device *vlan;
646
	u32 sta_flags_mask, sta_flags_set;
647
	u32 sta_modify_mask;
648 649 650
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
651
	u8 plink_action;
652
	u8 plink_state;
653
	struct ieee80211_ht_cap *ht_capa;
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	struct ieee80211_vht_cap *vht_capa;
655 656
	u8 uapsd_queues;
	u8 max_sp;
657
	enum nl80211_mesh_power_mode local_pm;
658 659
};

660
/**
661
 * enum station_info_flags - station information flags
662
 *
663 664
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
665
 *
666 667 668 669 670 671
 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 * @STATION_INFO_RX_BYTES: @rx_bytes filled
 * @STATION_INFO_TX_BYTES: @tx_bytes filled
 * @STATION_INFO_LLID: @llid filled
 * @STATION_INFO_PLID: @plid filled
 * @STATION_INFO_PLINK_STATE: @plink_state filled
672
 * @STATION_INFO_SIGNAL: @signal filled
673
 * @STATION_INFO_TX_BITRATE: @txrate fields are filled
674
 *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
675 676
 * @STATION_INFO_RX_PACKETS: @rx_packets filled
 * @STATION_INFO_TX_PACKETS: @tx_packets filled
677 678
 * @STATION_INFO_TX_RETRIES: @tx_retries filled
 * @STATION_INFO_TX_FAILED: @tx_failed filled
679
 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
680
 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
681
 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
682
 * @STATION_INFO_BSS_PARAM: @bss_param filled
683
 * @STATION_INFO_CONNECTED_TIME: @connected_time filled
684
 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
685
 * @STATION_INFO_STA_FLAGS: @sta_flags filled
686
 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
687
 * @STATION_INFO_T_OFFSET: @t_offset filled
688 689 690
 * @STATION_INFO_LOCAL_PM: @local_pm filled
 * @STATION_INFO_PEER_PM: @peer_pm filled
 * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
691
 */
692 693 694 695 696 697 698
enum station_info_flags {
	STATION_INFO_INACTIVE_TIME	= 1<<0,
	STATION_INFO_RX_BYTES		= 1<<1,
	STATION_INFO_TX_BYTES		= 1<<2,
	STATION_INFO_LLID		= 1<<3,
	STATION_INFO_PLID		= 1<<4,
	STATION_INFO_PLINK_STATE	= 1<<5,
699 700
	STATION_INFO_SIGNAL		= 1<<6,
	STATION_INFO_TX_BITRATE		= 1<<7,
701 702
	STATION_INFO_RX_PACKETS		= 1<<8,
	STATION_INFO_TX_PACKETS		= 1<<9,
703 704
	STATION_INFO_TX_RETRIES		= 1<<10,
	STATION_INFO_TX_FAILED		= 1<<11,
705
	STATION_INFO_RX_DROP_MISC	= 1<<12,
706
	STATION_INFO_SIGNAL_AVG		= 1<<13,
707
	STATION_INFO_RX_BITRATE		= 1<<14,
708
	STATION_INFO_BSS_PARAM          = 1<<15,
709
	STATION_INFO_CONNECTED_TIME	= 1<<16,
710
	STATION_INFO_ASSOC_REQ_IES	= 1<<17,
711
	STATION_INFO_STA_FLAGS		= 1<<18,
712 713
	STATION_INFO_BEACON_LOSS_COUNT	= 1<<19,
	STATION_INFO_T_OFFSET		= 1<<20,
714 715 716
	STATION_INFO_LOCAL_PM		= 1<<21,
	STATION_INFO_PEER_PM		= 1<<22,
	STATION_INFO_NONPEER_PM		= 1<<23,
717 718 719 720 721 722 723 724
};

/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
725 726 727 728 729 730
 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
 * @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
 * @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
 * @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
731
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
732
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
733 734
 */
enum rate_info_flags {
735 736 737 738 739 740 741 742
	RATE_INFO_FLAGS_MCS			= BIT(0),
	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
	RATE_INFO_FLAGS_40_MHZ_WIDTH		= BIT(2),
	RATE_INFO_FLAGS_80_MHZ_WIDTH		= BIT(3),
	RATE_INFO_FLAGS_80P80_MHZ_WIDTH		= BIT(4),
	RATE_INFO_FLAGS_160_MHZ_WIDTH		= BIT(5),
	RATE_INFO_FLAGS_SHORT_GI		= BIT(6),
	RATE_INFO_FLAGS_60G			= BIT(7),
743 744 745 746 747 748 749 750 751 752
};

/**
 * 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
753
 * @nss: number of streams (VHT only)
754 755 756 757 758
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
759
	u8 nss;
760 761
};

762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792
/**
 * 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;
};

793
/**
794
 * struct station_info - station information
795
 *
796
 * Station information filled by driver for get_station() and dump_station.
797
 *
798
 * @filled: bitflag of flags from &enum station_info_flags
799
 * @connected_time: time(in secs) since a station is last connected
800 801 802
 * @inactive_time: time since last station activity (tx/rx) in milliseconds
 * @rx_bytes: bytes received from this station
 * @tx_bytes: bytes transmitted to this station
803 804 805
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
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 * @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_.
810 811
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
812 813
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
814 815
 * @tx_retries: cumulative retry counts
 * @tx_failed: number of failed transmissions (retries exceeded, no ACK)
816
 * @rx_dropped_misc:  Dropped for un-specified reason.
817
 * @bss_param: current BSS parameters
818 819 820 821
 * @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.
822 823 824 825 826
 * @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.
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Johannes Berg 已提交
827
 * @sta_flags: station flags mask & values
828
 * @beacon_loss_count: Number of times beacon loss event has triggered.
829
 * @t_offset: Time offset of the station relative to this host.
830 831 832
 * @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
833
 */
834
struct station_info {
835
	u32 filled;
836
	u32 connected_time;
837 838 839
	u32 inactive_time;
	u32 rx_bytes;
	u32 tx_bytes;
840 841 842
	u16 llid;
	u16 plid;
	u8 plink_state;
843
	s8 signal;
844
	s8 signal_avg;
845
	struct rate_info txrate;
846
	struct rate_info rxrate;
847 848
	u32 rx_packets;
	u32 tx_packets;
849 850
	u32 tx_retries;
	u32 tx_failed;
851
	u32 rx_dropped_misc;
852
	struct sta_bss_parameters bss_param;
853
	struct nl80211_sta_flag_update sta_flags;
854 855

	int generation;
856 857 858

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
859

860
	u32 beacon_loss_count;
861
	s64 t_offset;
862 863 864
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
865

866 867 868 869
	/*
	 * Note: Add a new enum station_info_flags value for each new field and
	 * use it to check which fields are initialized.
	 */
870 871
};

872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
/**
 * 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
 */
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,
};

892 893 894 895 896 897
/**
 * 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().
 *
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Johannes Berg 已提交
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 * @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
905 906 907
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
908
	MPATH_INFO_SN			= BIT(1),
909 910 911 912 913 914 915 916 917 918 919 920 921 922
	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
923
 * @sn: target sequence number
924 925 926 927 928
 * @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
929 930 931 932
 * @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.
933 934 935 936
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
937
	u32 sn;
938 939 940 941 942
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
943 944

	int generation;
945 946
};

947 948 949 950 951 952 953 954 955 956 957
/**
 * 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)
958 959 960
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
961
 * @ap_isolate: do not forward packets between connected stations
962 963
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
964 965
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
966 967 968 969 970
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
971 972
	u8 *basic_rates;
	u8 basic_rates_len;
973
	int ap_isolate;
974
	int ht_opmode;
975
	s8 p2p_ctwindow, p2p_opp_ps;
976
};
977

978
/**
979 980 981
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
 *
 * @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
1030 1031 1032 1033 1034 1035 1036
 *
 * @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.
1037 1038 1039
 * @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.
1040 1041 1042 1043
 * @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.
1044
 */
1045 1046 1047 1048 1049
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
1050 1051 1052
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
1053
	bool auto_open_plinks;
1054
	u32 dot11MeshNbrOffsetMaxNeighbor;
1055
	u8 dot11MeshHWMPmaxPREQretries;
1056 1057 1058 1059
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
1060
	u16 dot11MeshHWMPperrMinInterval;
1061
	u16 dot11MeshHWMPnetDiameterTraversalTime;
1062
	u8 dot11MeshHWMPRootMode;
1063
	u16 dot11MeshHWMPRannInterval;
1064
	bool dot11MeshGateAnnouncementProtocol;
1065
	bool dot11MeshForwarding;
1066
	s32 rssi_threshold;
1067
	u16 ht_opmode;
1068 1069
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
1070
	u16 dot11MeshHWMPconfirmationInterval;
1071 1072
	enum nl80211_mesh_power_mode power_mode;
	u16 dot11MeshAwakeWindowDuration;
1073 1074
};

1075 1076
/**
 * struct mesh_setup - 802.11s mesh setup configuration
1077
 * @chandef: defines the channel to use
1078 1079
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
1080
 * @sync_method: which synchronization method to use
1081 1082
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
1083 1084
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
1085 1086
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
1087 1088
 * @dtim_period: DTIM period to use
 * @beacon_interval: beacon interval to use
1089
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
1090 1091 1092 1093
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
1094
	struct cfg80211_chan_def chandef;
1095 1096
	const u8 *mesh_id;
	u8 mesh_id_len;
1097 1098 1099
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
1100 1101
	const u8 *ie;
	u8 ie_len;
1102
	bool is_authenticated;
1103
	bool is_secure;
1104 1105
	u8 dtim_period;
	u16 beacon_interval;
1106
	int mcast_rate[IEEE80211_NUM_BANDS];
1107 1108
};

1109 1110
/**
 * struct ieee80211_txq_params - TX queue parameters
1111
 * @ac: AC identifier
1112 1113 1114 1115 1116 1117 1118 1119
 * @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 {
1120
	enum nl80211_ac ac;
1121 1122 1123 1124 1125 1126
	u16 txop;
	u16 cwmin;
	u16 cwmax;
	u8 aifs;
};

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/**
 * 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.
 */
1149

1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165
/**
 * 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.
1166
 * @n_channels: total number of channels to scan
1167 1168
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1169
 * @flags: bit field of flags controlling operation
1170
 * @rates: bitmap of rates to advertise for each band
1171
 * @wiphy: the wiphy this was for
1172
 * @scan_start: time (in jiffies) when the scan started
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 * @wdev: the wireless device to scan for
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 * @aborted: (internal) scan request was notified as aborted
1175
 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1176 1177 1178 1179 1180
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1181
	const u8 *ie;
1182
	size_t ie_len;
1183
	u32 flags;
1184

1185 1186
	u32 rates[IEEE80211_NUM_BANDS];

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	struct wireless_dev *wdev;

1189 1190
	/* internal */
	struct wiphy *wiphy;
1191
	unsigned long scan_start;
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	bool aborted;
1193
	bool no_cck;
1194 1195 1196

	/* keep last */
	struct ieee80211_channel *channels[0];
1197 1198
};

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/**
 * struct cfg80211_match_set - sets of attributes to match
 *
 * @ssid: SSID to be matched
 */
struct cfg80211_match_set {
	struct cfg80211_ssid ssid;
};

1208 1209 1210 1211 1212 1213
/**
 * 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
1214
 * @interval: interval between each scheduled scan cycle
1215 1216
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1217
 * @flags: bit field of flags controlling operation
1218 1219 1220 1221 1222
 * @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
1223 1224 1225
 * @wiphy: the wiphy this was for
 * @dev: the interface
 * @channels: channels to scan
1226
 * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
1227 1228 1229 1230 1231
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1232
	u32 interval;
1233 1234
	const u8 *ie;
	size_t ie_len;
1235
	u32 flags;
1236 1237
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1238
	s32 rssi_thold;
1239 1240 1241 1242

	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1243
	unsigned long scan_start;
1244 1245 1246 1247 1248

	/* keep last */
	struct ieee80211_channel *channels[0];
};

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/**
 * 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,
};

1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
/**
 * struct cfg80211_bss_ie_data - BSS entry IE data
 * @rcu_head: internal use, for freeing
 * @len: length of the IEs
 * @data: IE data
 */
struct cfg80211_bss_ies {
	struct rcu_head rcu_head;
	int len;
	u8 data[];
};

1274 1275 1276 1277 1278 1279
/**
 * struct cfg80211_bss - BSS description
 *
 * This structure describes a BSS (which may also be a mesh network)
 * for use in scan results and similar.
 *
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 * @channel: channel this BSS is on
1281 1282 1283 1284
 * @bssid: BSSID of the BSS
 * @tsf: timestamp of last received update
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
1285
 * @ies: the information elements (Note that there
1286 1287 1288 1289 1290
 *	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
 * @beacon_ies: the information elements from the last Beacon frame
 * @proberesp_ies: the information elements from the last Probe Response frame
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 * @signal: signal strength value (type depends on the wiphy's signal_type)
1292 1293 1294
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
1295 1296
	u64 tsf;

1297 1298
	struct ieee80211_channel *channel;

1299 1300 1301 1302 1303 1304
	const struct cfg80211_bss_ies __rcu *ies;
	const struct cfg80211_bss_ies __rcu *beacon_ies;
	const struct cfg80211_bss_ies __rcu *proberesp_ies;

	s32 signal;

1305 1306 1307
	u16 beacon_interval;
	u16 capability;

1308
	u8 bssid[ETH_ALEN];
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	u8 priv[0] __aligned(sizeof(void *));
1311 1312
};

1313 1314 1315 1316
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
1317 1318 1319
 *
 * Note that the return value is an RCU-protected pointer, so
 * rcu_read_lock() must be held when calling this function.
1320
 * Return: %NULL if not found.
1321 1322 1323 1324
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1325 1326 1327 1328 1329
/**
 * struct cfg80211_auth_request - Authentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * authentication.
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 *
 * @bss: The BSS to authenticate with.
1332 1333 1334
 * @auth_type: Authentication type (algorithm)
 * @ie: Extra IEs to add to Authentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
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 * @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
1338 1339 1340
 * @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
1341 1342
 */
struct cfg80211_auth_request {
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	struct cfg80211_bss *bss;
1344 1345
	const u8 *ie;
	size_t ie_len;
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	enum nl80211_auth_type auth_type;
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	const u8 *key;
	u8 key_len, key_idx;
1349 1350
	const u8 *sae_data;
	size_t sae_data_len;
1351 1352
};

1353 1354 1355 1356 1357 1358 1359 1360 1361
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
};

1362 1363 1364 1365 1366
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1367 1368 1369 1370 1371
 * @bss: The BSS to associate with. If the call is successful the driver
 *	is given a reference that it must release, normally via a call to
 *	cfg80211_send_rx_assoc(), or, if association timed out, with a
 *	call to cfg80211_put_bss() (in addition to calling
 *	cfg80211_send_assoc_timeout())
1372 1373
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1374
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
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 * @crypto: crypto settings
1376
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
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 * @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.
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 */
struct cfg80211_assoc_request {
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	struct cfg80211_bss *bss;
1384
	const u8 *ie, *prev_bssid;
1385
	size_t ie_len;
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	struct cfg80211_crypto_settings crypto;
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	bool use_mfp;
1388 1389 1390
	u32 flags;
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1391 1392 1393 1394 1395 1396 1397 1398
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
1399
 * @bssid: the BSSID of the BSS to deauthenticate from
1400 1401
 * @ie: Extra IEs to add to Deauthentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
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 * @reason_code: The reason code for the deauthentication
1403 1404
 */
struct cfg80211_deauth_request {
1405
	const u8 *bssid;
1406 1407
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1409
	bool local_state_change;
1410 1411 1412 1413 1414 1415 1416 1417
};

/**
 * struct cfg80211_disassoc_request - Disassociation request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * disassocation.
 *
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 * @bss: the BSS to disassociate from
1419 1420
 * @ie: Extra IEs to add to Disassociation frame or %NULL
 * @ie_len: Length of ie buffer in octets
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 * @reason_code: The reason code for the disassociation
1422 1423
 * @local_state_change: This is a request for a local state only, i.e., no
 *	Disassociation frame is to be transmitted.
1424 1425
 */
struct cfg80211_disassoc_request {
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	struct cfg80211_bss *bss;
1427 1428
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1430
	bool local_state_change;
1431 1432
};

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/**
 * 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.
1443
 * @chandef: defines the channel to use if no other IBSS to join can be found
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 * @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
1448
 * @beacon_interval: beacon interval to use
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 * @privacy: this is a protected network, keys will be configured
 *	after joining
1451 1452 1453 1454
 * @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.
1455
 * @basic_rates: bitmap of basic rates to use when creating the IBSS
1456
 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
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 */
struct cfg80211_ibss_params {
	u8 *ssid;
	u8 *bssid;
1461
	struct cfg80211_chan_def chandef;
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	u8 *ie;
	u8 ssid_len, ie_len;
1464
	u16 beacon_interval;
1465
	u32 basic_rates;
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	bool channel_fixed;
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	bool privacy;
1468
	bool control_port;
1469
	int mcast_rate[IEEE80211_NUM_BANDS];
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};

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/**
 * 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)
 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan
 *	results)
 * @ssid: SSID
 * @ssid_len: Length of ssid in octets
 * @auth_type: Authentication type (algorithm)
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 * @ie: IEs for association request
 * @ie_len: Length of assoc_ie in octets
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 * @privacy: indicates whether privacy-enabled APs should be used
1488
 * @mfp: indicate whether management frame protection is used
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 * @crypto: crypto settings
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 * @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
1493
 * @flags:  See &enum cfg80211_assoc_req_flags
1494 1495
 * @bg_scan_period:  Background scan period in seconds
 *   or -1 to indicate that default value is to be used.
1496 1497 1498
 * @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.
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 */
struct cfg80211_connect_params {
	struct ieee80211_channel *channel;
	u8 *bssid;
	u8 *ssid;
	size_t ssid_len;
	enum nl80211_auth_type auth_type;
	u8 *ie;
	size_t ie_len;
	bool privacy;
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	enum nl80211_mfp mfp;
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	struct cfg80211_crypto_settings crypto;
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	const u8 *key;
	u8 key_len, key_idx;
1513
	u32 flags;
1514
	int bg_scan_period;
1515 1516
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
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};

1519 1520
/**
 * enum wiphy_params_flags - set_wiphy_params bitfield values
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 * @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
1526 1527 1528 1529 1530 1531
 */
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,
1532
	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
1533 1534
};

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/*
 * cfg80211_bitrate_mask - masks for bitrate control
 */
struct cfg80211_bitrate_mask {
	struct {
		u32 legacy;
1541
		u8 mcs[IEEE80211_HT_MCS_MASK_LEN];
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	} control[IEEE80211_NUM_BANDS];
};
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/**
 * 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 {
	u8 *bssid;
	u8 *pmkid;
};
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/**
 * struct cfg80211_wowlan_trig_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)
 *
 * Internal note: @mask and @pattern are allocated in one chunk of
 * memory, free @mask only!
 */
struct cfg80211_wowlan_trig_pkt_pattern {
	u8 *mask, *pattern;
	int pattern_len;
};

/**
 * 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
1583 1584 1585 1586
 * @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
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 */
struct cfg80211_wowlan {
1589 1590 1591
	bool any, disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
	     rfkill_release;
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	struct cfg80211_wowlan_trig_pkt_pattern *patterns;
	int n_patterns;
};

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/**
 * 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.
 */
struct cfg80211_wowlan_wakeup {
	bool disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
	     rfkill_release, packet_80211;
	s32 pattern_idx;
	u32 packet_present_len, packet_len;
	const void *packet;
};

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/**
 * struct cfg80211_gtk_rekey_data - rekey data
 * @kek: key encryption key
 * @kck: key confirmation key
 * @replay_ctr: replay counter
 */
struct cfg80211_gtk_rekey_data {
	u8 kek[NL80211_KEK_LEN];
	u8 kck[NL80211_KCK_LEN];
	u8 replay_ctr[NL80211_REPLAY_CTR_LEN];
};

1634 1635 1636 1637 1638 1639 1640 1641 1642
/**
 * 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.
 *
1643 1644 1645 1646
 * 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.
 *
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 * @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.
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 * @resume: wiphy device needs to be resumed
1651 1652 1653
 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback
 *	to call device_set_wakeup_enable() to enable/disable wakeup from
 *	the device.
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 *
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 * @add_virtual_intf: create a new virtual interface with the given name,
1656
 *	must set the struct wireless_dev's iftype. Beware: You must create
1657
 *	the new netdev in the wiphy's network namespace! Returns the struct
1658 1659
 *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
 *	also set the address member in the wdev.
1660
 *
1661
 * @del_virtual_intf: remove the virtual interface
1662
 *
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 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
1665
 *
1666 1667 1668 1669 1670 1671
 * @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
1672 1673
 *	after it returns. This function should return an error if it is
 *	not possible to retrieve the key, -ENOENT if it doesn't exist.
1674 1675
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
1676
 *	and @key_index, return -ENOENT if the key doesn't exist.
1677 1678
 *
 * @set_default_key: set the default key on an interface
1679
 *
1680 1681
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
1682 1683
 * @set_rekey_data: give the data necessary for GTK rekeying to the driver
 *
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 * @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.
1688 1689 1690
 *
 * @add_station: Add a new station.
 * @del_station: Remove a station; @mac may be NULL to remove all stations.
1691 1692 1693 1694 1695 1696
 * @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! Also, supported_rates changes are
 *	not checked in station mode -- drivers need to reject (or ignore) them
 *	for anything but TDLS peers.
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 * @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
1705 1706
 * @join_mesh: join the mesh network with the specified parameters
 * @leave_mesh: leave the current mesh network
1707
 *
1708
 * @get_mesh_config: Get the current mesh configuration
1709
 *
1710
 * @update_mesh_config: Update mesh parameters on a running mesh.
1711 1712 1713
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
1714
 * @change_bss: Modify parameters for a given BSS.
1715 1716
 *
 * @set_txq_params: Set TX queue parameters
1717
 *
1718 1719 1720 1721 1722 1723 1724 1725
 * @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.
1726
 *
1727 1728 1729 1730
 * @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.
1731 1732 1733 1734 1735
 *
 * @auth: Request to authenticate with the specified peer
 * @assoc: Request to (re)associate with the specified peer
 * @deauth: Request to deauthenticate from the specified peer
 * @disassoc: Request to disassociate from the specified peer
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 *
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 * @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.
 * @disconnect: Disconnect from the BSS/ESS.
 *
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 * @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.
 * @leave_ibss: Leave the IBSS.
1747
 *
1748 1749 1750
 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
 *	MESH mode)
 *
1751 1752 1753 1754
 * @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.
1755
 *
1756
 * @set_tx_power: set the transmit power according to the parameters,
1757 1758 1759 1760
 *	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.)
1761
 * @get_tx_power: store the current TX power into the dbm variable;
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 *	return 0 if successful
 *
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1764 1765
 * @set_wds_peer: set the WDS peer for a WDS interface
 *
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1766 1767
 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
 *	functions to adjust rfkill hw state
1768
 *
1769 1770
 * @dump_survey: get site survey information.
 *
1771 1772 1773 1774 1775 1776 1777 1778
 * @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.
1779 1780 1781
 * @mgmt_tx: Transmit a management frame.
 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
 *	frame on another channel
1782
 *
1783
 * @testmode_cmd: run a test mode command
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 * @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.
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 *
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1791 1792
 * @set_bitrate_mask: set the bitrate mask configuration
 *
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1793 1794 1795 1796 1797
 * @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.
1798 1799
 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
 *	allows the driver to adjust the dynamic ps timeout value.
1800
 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
1801 1802
 * @set_cqm_txe_config: Configure connection quality monitor TX error
 *	thresholds.
1803
 * @sched_scan_start: Tell the driver to start a scheduled scan.
1804
 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan.
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 *
1806 1807 1808
 * @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.
1809 1810 1811 1812 1813 1814 1815
 *
 * @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).
1816 1817 1818 1819
 *
 * @set_ringparam: Set tx and rx ring sizes.
 *
 * @get_ringparam: Get tx and rx ring current and maximum sizes.
1820 1821 1822
 *
 * @tdls_mgmt: Transmit a TDLS management frame.
 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
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 *
 * @probe_client: probe an associated client, must return a cookie that it
 *	later passes to cfg80211_probe_status().
1826 1827
 *
 * @set_noack_map: Set the NoAck Map for the TIDs.
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837
 *
 * @get_et_sset_count:  Ethtool API to get string-set count.
 *	See @ethtool_ops.get_sset_count
 *
 * @get_et_stats:  Ethtool API to get a set of u64 stats.
 *	See @ethtool_ops.get_ethtool_stats
 *
 * @get_et_strings:  Ethtool API to get a set of strings to describe stats
 *	and perhaps other supported types of ethtool data-sets.
 *	See @ethtool_ops.get_strings
1838 1839 1840 1841
 *
 * @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.
1842 1843 1844
 *
 * @start_p2p_device: Start the given P2P device.
 * @stop_p2p_device: Stop the given P2P device.
1845 1846 1847 1848 1849 1850 1851
 *
 * @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.
1852 1853
 */
struct cfg80211_ops {
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	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
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1855
	int	(*resume)(struct wiphy *wiphy);
1856
	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
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1857

1858
	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
1859
						  const char *name,
1860 1861 1862 1863 1864
						  enum nl80211_iftype type,
						  u32 *flags,
						  struct vif_params *params);
	int	(*del_virtual_intf)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
1865 1866
	int	(*change_virtual_intf)(struct wiphy *wiphy,
				       struct net_device *dev,
1867 1868
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
1869 1870

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
1871
			   u8 key_index, bool pairwise, const u8 *mac_addr,
1872 1873
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
1874 1875
			   u8 key_index, bool pairwise, const u8 *mac_addr,
			   void *cookie,
1876 1877
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
1878
			   u8 key_index, bool pairwise, const u8 *mac_addr);
1879 1880
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
1881
				   u8 key_index, bool unicast, bool multicast);
1882 1883 1884
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
1885

1886 1887 1888 1889 1890
	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);
1891 1892 1893 1894 1895 1896 1897 1898


	int	(*add_station)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *mac, struct station_parameters *params);
	int	(*del_station)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *mac);
	int	(*change_station)(struct wiphy *wiphy, struct net_device *dev,
				  u8 *mac, struct station_parameters *params);
1899
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915
			       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,
			       u8 *dst, u8 *next_hop);
	int	(*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst);
	int	(*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
				  u8 *dst, 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);
1916
	int	(*get_mesh_config)(struct wiphy *wiphy,
1917 1918
				struct net_device *dev,
				struct mesh_config *conf);
1919
	int	(*update_mesh_config)(struct wiphy *wiphy,
1920 1921 1922 1923 1924 1925 1926
				      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);

1927 1928
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
1929

1930
	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
1931
				  struct ieee80211_txq_params *params);
1932

1933 1934 1935 1936 1937
	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
					     struct net_device *dev,
					     struct ieee80211_channel *chan);

	int	(*set_monitor_channel)(struct wiphy *wiphy,
1938
				       struct cfg80211_chan_def *chandef);
1939

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	int	(*scan)(struct wiphy *wiphy,
1941
			struct cfg80211_scan_request *request);
1942 1943 1944 1945 1946 1947

	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,
1948
			  struct cfg80211_deauth_request *req);
1949
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
1950
			    struct cfg80211_disassoc_request *req);
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1951

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1952 1953 1954 1955 1956
	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);

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1957 1958 1959
	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);
1960

1961 1962 1963
	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
				  int rate[IEEE80211_NUM_BANDS]);

1964
	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
1965

1966
	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
1967
				enum nl80211_tx_power_setting type, int mbm);
1968 1969
	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
				int *dbm);
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1970

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1971
	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
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1972
				const u8 *addr);
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1973

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1974
	void	(*rfkill_poll)(struct wiphy *wiphy);
1975 1976 1977

#ifdef CONFIG_NL80211_TESTMODE
	int	(*testmode_cmd)(struct wiphy *wiphy, void *data, int len);
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	int	(*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb,
				 struct netlink_callback *cb,
				 void *data, int len);
1981
#endif
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1983 1984 1985 1986 1987
	int	(*set_bitrate_mask)(struct wiphy *wiphy,
				    struct net_device *dev,
				    const u8 *peer,
				    const struct cfg80211_bitrate_mask *mask);

1988 1989 1990
	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
			int idx, struct survey_info *info);

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1991 1992 1993 1994 1995 1996
	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);

1997
	int	(*remain_on_channel)(struct wiphy *wiphy,
1998
				     struct wireless_dev *wdev,
1999 2000 2001 2002
				     struct ieee80211_channel *chan,
				     unsigned int duration,
				     u64 *cookie);
	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
2003
					    struct wireless_dev *wdev,
2004 2005
					    u64 cookie);

2006
	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
2007
			  struct ieee80211_channel *chan, bool offchan,
2008 2009
			  unsigned int wait, const u8 *buf, size_t len,
			  bool no_cck, bool dont_wait_for_ack, u64 *cookie);
2010
	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
2011
				       struct wireless_dev *wdev,
2012
				       u64 cookie);
2013

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2014 2015
	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
				  bool enabled, int timeout);
2016 2017 2018 2019

	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
				       struct net_device *dev,
				       s32 rssi_thold, u32 rssi_hyst);
2020

2021 2022 2023 2024
	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
				      struct net_device *dev,
				      u32 rate, u32 pkts, u32 intvl);

2025
	void	(*mgmt_frame_register)(struct wiphy *wiphy,
2026
				       struct wireless_dev *wdev,
2027
				       u16 frame_type, bool reg);
2028 2029 2030

	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
2031 2032 2033 2034

	int	(*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx);
	void	(*get_ringparam)(struct wiphy *wiphy,
				 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
2035 2036 2037 2038

	int	(*sched_scan_start)(struct wiphy *wiphy,
				struct net_device *dev,
				struct cfg80211_sched_scan_request *request);
2039
	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
2040 2041 2042

	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_gtk_rekey_data *data);
2043 2044 2045 2046 2047 2048

	int	(*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
			     u8 *peer, u8 action_code,  u8 dialog_token,
			     u16 status_code, const u8 *buf, size_t len);
	int	(*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
			     u8 *peer, enum nl80211_tdls_operation oper);
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2049 2050 2051

	int	(*probe_client)(struct wiphy *wiphy, struct net_device *dev,
				const u8 *peer, u64 *cookie);
2052

2053 2054 2055 2056
	int	(*set_noack_map)(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map);

2057 2058 2059 2060 2061 2062
	int	(*get_et_sset_count)(struct wiphy *wiphy,
				     struct net_device *dev, int sset);
	void	(*get_et_stats)(struct wiphy *wiphy, struct net_device *dev,
				struct ethtool_stats *stats, u64 *data);
	void	(*get_et_strings)(struct wiphy *wiphy, struct net_device *dev,
				  u32 sset, u8 *data);
2063

2064
	int	(*get_channel)(struct wiphy *wiphy,
2065
			       struct wireless_dev *wdev,
2066
			       struct cfg80211_chan_def *chandef);
2067 2068 2069 2070 2071

	int	(*start_p2p_device)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
	void	(*stop_p2p_device)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2072 2073 2074

	int	(*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
			       const struct cfg80211_acl_data *params);
2075 2076
};

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/*
 * wireless hardware and networking interfaces structures
 * and registration/helper functions
 */

/**
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2083 2084 2085
 * enum wiphy_flags - wiphy capability flags
 *
 * @WIPHY_FLAG_CUSTOM_REGULATORY:  tells us the driver for this device
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 * 	has its own custom regulatory domain and cannot identify the
 * 	ISO / IEC 3166 alpha2 it belongs to. When this is enabled
 * 	we will disregard the first regulatory hint (when the
 * 	initiator is %REGDOM_SET_BY_CORE).
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 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will
 *	ignore regulatory domain settings until it gets its own regulatory
2092 2093 2094 2095 2096 2097 2098
 *	domain via its regulatory_hint() unless the regulatory hint is
 *	from a country IE. After its gets its own regulatory domain it will
 *	only allow further regulatory domain settings to further enhance
 *	compliance. For example if channel 13 and 14 are disabled by this
 *	regulatory domain no user regulatory domain can enable these channels
 *	at a later time. This can be used for devices which do not have
 *	calibration information guaranteed for frequencies or settings
2099 2100 2101
 *	outside of its regulatory domain. If used in combination with
 *	WIPHY_FLAG_CUSTOM_REGULATORY the inspected country IE power settings
 *	will be followed.
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 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure
 *	that passive scan flags and beaconing flags may not be lifted by
 *	cfg80211 due to regulatory beacon hints. For more information on beacon
2105
 *	hints read the documenation for regulatory_hint_found_beacon()
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 * @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
2112 2113 2114
 * @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
2115 2116 2117
 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
 *	control port protocol ethertype. The device also honours the
 *	control_port_no_encrypt flag.
2118
 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
2119 2120
 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
 *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
2121
 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
2122 2123
 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
 *	firmware.
2124
 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
2125 2126 2127 2128 2129 2130
 * @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.
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 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
2132 2133 2134
 * @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().
2135 2136
 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
 *	responds to probe-requests in hardware.
2137 2138
 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
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 */
enum wiphy_flags {
2141 2142 2143 2144 2145 2146 2147 2148
	WIPHY_FLAG_CUSTOM_REGULATORY		= BIT(0),
	WIPHY_FLAG_STRICT_REGULATORY		= BIT(1),
	WIPHY_FLAG_DISABLE_BEACON_HINTS		= BIT(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),
2149
	WIPHY_FLAG_IBSS_RSN			= BIT(8),
2150
	WIPHY_FLAG_MESH_AUTH			= BIT(10),
2151
	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
2152
	/* use hole at 12 */
2153
	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
2154
	WIPHY_FLAG_AP_UAPSD			= BIT(14),
2155 2156
	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
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	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
2158
	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
2159
	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
2160 2161
	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183
};

/**
 * 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.
2184
 * @radar_detect_widths: bitmap of channel widths supported for radar detection
2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236
 *
 * These examples can be expressed as follows:
 *
 * 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,
 *  };
 *
 *
 * 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,
 *  };
 *
 *
 * 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;
2237
	u8 radar_detect_widths;
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};

2240 2241 2242 2243
struct ieee80211_txrx_stypes {
	u16 tx, rx;
};

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/**
 * 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
2254 2255 2256 2257 2258
 * @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
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 */
enum wiphy_wowlan_support_flags {
2261 2262 2263 2264 2265 2266 2267 2268
	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),
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};

/**
 * 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
 */
struct wiphy_wowlan_support {
	u32 flags;
	int n_patterns;
	int pattern_max_len;
	int pattern_min_len;
};

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/**
 * struct wiphy - wireless hardware description
2288 2289 2290
 * @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
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 * @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
2298 2299 2300 2301 2302
 * @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
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 * @_net: the network namespace this wiphy currently lives in
2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315
 * @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:...:00:0f. 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.
2316 2317
 * @registered: protects ->resume and ->suspend sysfs callbacks against
 *	unregister hardware
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 * @debugfsdir: debugfs directory used for this wiphy, will be renamed
 *	automatically on wiphy renames
 * @dev: (virtual) struct device for this wiphy
2321
 * @registered: helps synchronize suspend/resume with wiphy unregister
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 * @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
2326 2327 2328 2329 2330
 * @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.
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 * @flags: wiphy flags, see &enum wiphy_flags
2332
 * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
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2333 2334 2335 2336
 * @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
2337 2338
 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
 *	for in any given scheduled scan
2339 2340 2341
 * @max_match_sets: maximum number of match sets the device can handle
 *	when performing a scheduled scan, 0 if filtering is not
 *	supported.
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 * @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
2345 2346
 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled
 *	scans
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2347 2348 2349 2350 2351 2352 2353
 * @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
2354 2355 2356 2357
 *
 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
 *	transmitted through nl80211, points to an array indexed by interface
 *	type
2358
 *
2359 2360 2361 2362 2363 2364 2365
 * @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.
2366
 *
2367 2368 2369 2370 2371
 * @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.
 *
2372 2373
 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
 *	may request, if implemented.
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 *
 * @wowlan: WoWLAN support information
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 *
 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
2378 2379
 * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
 *	If null, then none can be over-ridden.
2380 2381 2382
 *
 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
 *	supports for ACL.
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 */
struct wiphy {
	/* assign these fields before you register the wiphy */

2387
	/* permanent MAC address(es) */
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	u8 perm_addr[ETH_ALEN];
2389 2390 2391
	u8 addr_mask[ETH_ALEN];

	struct mac_address *addresses;
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2393 2394
	const struct ieee80211_txrx_stypes *mgmt_stypes;

2395 2396 2397 2398
	const struct ieee80211_iface_combination *iface_combinations;
	int n_iface_combinations;
	u16 software_iftypes;

2399 2400
	u16 n_addresses;

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	/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
	u16 interface_modes;

2404 2405
	u16 max_acl_mac_addrs;

2406
	u32 flags, features;
2407

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	u32 ap_sme_capa;

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	enum cfg80211_signal_type signal_type;

	int bss_priv_size;
	u8 max_scan_ssids;
2414
	u8 max_sched_scan_ssids;
2415
	u8 max_match_sets;
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	u16 max_scan_ie_len;
2417
	u16 max_sched_scan_ie_len;
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2418 2419 2420 2421

	int n_cipher_suites;
	const u32 *cipher_suites;

2422 2423 2424 2425
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;
2426
	u8 coverage_class;
2427

2428 2429 2430
	char fw_version[ETHTOOL_BUSINFO_LEN];
	u32 hw_version;

2431
#ifdef CONFIG_PM
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	struct wiphy_wowlan_support wowlan;
2433
#endif
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2435 2436
	u16 max_remain_on_channel_duration;

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	u8 max_num_pmkids;

2439 2440
	u32 available_antennas_tx;
	u32 available_antennas_rx;
2441

2442 2443 2444 2445 2446 2447 2448
	/*
	 * 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;

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	/* 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. */
2454
	const void *privid;
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	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
2459 2460
	void (*reg_notifier)(struct wiphy *wiphy,
			     struct regulatory_request *request);
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	/* fields below are read-only, assigned by cfg80211 */

2464
	const struct ieee80211_regdomain __rcu *regd;
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	/* the item in /sys/class/ieee80211/ points to this,
	 * you need use set_wiphy_dev() (see below) */
	struct device dev;

2470 2471 2472
	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
	bool registered;

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	/* dir in debugfs: ieee80211/<wiphyname> */
	struct dentry *debugfsdir;

2476 2477
	const struct ieee80211_ht_cap *ht_capa_mod_mask;

2478 2479 2480 2481 2482
#ifdef CONFIG_NET_NS
	/* the network namespace this phy lives in currently */
	struct net *_net;
#endif

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#ifdef CONFIG_CFG80211_WEXT
	const struct iw_handler_def *wext;
#endif

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	char priv[0] __aligned(NETDEV_ALIGN);
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2488 2489
};

2490 2491
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
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	return read_pnet(&wiphy->_net);
2493 2494 2495 2496
}

static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
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	write_pnet(&wiphy->_net, net);
2498 2499
}

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/**
 * wiphy_priv - return priv from wiphy
 *
 * @wiphy: the wiphy whose priv pointer to return
2504
 * Return: The priv of @wiphy.
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 */
static inline void *wiphy_priv(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return &wiphy->priv;
}

2512 2513 2514 2515
/**
 * priv_to_wiphy - return the wiphy containing the priv
 *
 * @priv: a pointer previously returned by wiphy_priv
2516
 * Return: The wiphy of @priv.
2517 2518 2519 2520 2521 2522 2523
 */
static inline struct wiphy *priv_to_wiphy(void *priv)
{
	BUG_ON(!priv);
	return container_of(priv, struct wiphy, priv);
}

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/**
 * 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
2539
 * Return: The dev of @wiphy.
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 */
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
2550
 * Return: The name of @wiphy.
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 */
2552
static inline const char *wiphy_name(const struct wiphy *wiphy)
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{
	return dev_name(&wiphy->dev);
}

/**
 * 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.
 *
2566 2567
 * Return: A pointer to the new wiphy. This pointer must be
 * assigned to each netdev's ieee80211_ptr for proper operation.
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 */
2569
struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv);
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/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
2576
 * Return: A non-negative wiphy index or a negative error code.
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 */
extern 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.
 */
extern void wiphy_unregister(struct wiphy *wiphy);

/**
 * wiphy_free - free wiphy
 *
 * @wiphy: The wiphy to free
 */
extern void wiphy_free(struct wiphy *wiphy);

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/* internal structs */
2599
struct cfg80211_conn;
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struct cfg80211_internal_bss;
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struct cfg80211_cached_keys;
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/**
2604
 * struct wireless_dev - wireless device state
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 *
2606 2607 2608 2609 2610 2611 2612 2613 2614 2615
 * 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.
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 *
 * @wiphy: pointer to hardware description
 * @iftype: interface type
 * @list: (private) Used to collect the interfaces
2620 2621 2622
 * @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
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 * @current_bss: (private) Used by the internal configuration code
2624
 * @channel: (private) Used by the internal configuration code to track
2625 2626 2627 2628
 *	the user-set AP, monitor and WDS channel
 * @preset_chan: (private) Used by the internal configuration code to
 *	track the channel to be used for AP later
 * @preset_chantype: (private) the corresponding channel type
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 * @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
2632 2633
 * @mesh_id_len: (private) Used by the internal configuration code
 * @mesh_id_up_len: (private) Used by the internal configuration code
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 * @wext: (private) Used by the internal wireless extensions compat code
2635 2636 2637 2638
 * @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
2639 2640
 * @mgmt_registrations: list of registrations for management frames
 * @mgmt_registrations_lock: lock for the list
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 * @mtx: mutex used to lock data in this struct
 * @cleanup_work: work struct used for cleanup that can't be done directly
2643 2644
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
2645 2646
 * @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
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 */
struct wireless_dev {
	struct wiphy *wiphy;
	enum nl80211_iftype iftype;

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	/* the remainder of this struct should be private to cfg80211 */
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	struct list_head list;
	struct net_device *netdev;

2656 2657
	u32 identifier;

2658 2659
	struct list_head mgmt_registrations;
	spinlock_t mgmt_registrations_lock;
2660

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	struct mutex mtx;

2663 2664
	struct work_struct cleanup_work;

2665 2666 2667
	bool use_4addr, p2p_started;

	u8 address[ETH_ALEN] __aligned(sizeof(u16));
2668

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	/* currently used for IBSS and SME - might be rearranged later */
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	u8 ssid[IEEE80211_MAX_SSID_LEN];
2671
	u8 ssid_len, mesh_id_len, mesh_id_up_len;
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	enum {
		CFG80211_SME_IDLE,
2674
		CFG80211_SME_CONNECTING,
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		CFG80211_SME_CONNECTED,
	} sme_state;
2677
	struct cfg80211_conn *conn;
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	struct cfg80211_cached_keys *connect_keys;
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	struct list_head event_list;
	spinlock_t event_lock;

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	struct cfg80211_internal_bss *current_bss; /* associated / joined */
2684
	struct cfg80211_chan_def preset_chandef;
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2686 2687 2688
	/* for AP and mesh channel tracking */
	struct ieee80211_channel *channel;

2689 2690
	bool ibss_fixed;

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	bool ps;
	int ps_timeout;

2694 2695
	int beacon_interval;

2696
	u32 ap_unexpected_nlportid;
2697

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#ifdef CONFIG_CFG80211_WEXT
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	/* wext data */
2700
	struct {
2701 2702
		struct cfg80211_ibss_params ibss;
		struct cfg80211_connect_params connect;
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		struct cfg80211_cached_keys *keys;
2704 2705
		u8 *ie;
		size_t ie_len;
2706
		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
2707
		u8 ssid[IEEE80211_MAX_SSID_LEN];
2708
		s8 default_key, default_mgmt_key;
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		bool prev_bssid_valid;
2710
	} wext;
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#endif
};

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static inline u8 *wdev_address(struct wireless_dev *wdev)
{
	if (wdev->netdev)
		return wdev->netdev->dev_addr;
	return wdev->address;
}

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/**
 * wdev_priv - return wiphy priv from wireless_dev
 *
 * @wdev: The wireless device whose wiphy's priv pointer to return
2725
 * Return: The wiphy priv of @wdev.
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 */
static inline void *wdev_priv(struct wireless_dev *wdev)
{
	BUG_ON(!wdev);
	return wiphy_priv(wdev->wiphy);
}

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/**
 * DOC: Utility functions
 *
 * cfg80211 offers a number of utility functions that can be useful.
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 */

/**
 * ieee80211_channel_to_frequency - convert channel number to frequency
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 * @chan: channel number
2742
 * @band: band, necessary due to channel number overlap
2743
 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
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 */
2745
extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
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/**
 * ieee80211_frequency_to_channel - convert frequency to channel number
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 * @freq: center frequency
2750
 * Return: The corresponding channel, or 0 if the conversion failed.
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 */
extern 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.
 */
extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
							 int freq);
/**
 * ieee80211_get_channel - get channel struct from wiphy for specified frequency
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 * @wiphy: the struct wiphy to get the channel for
 * @freq: the center frequency of the channel
2767
 * Return: The channel struct from @wiphy at @freq.
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 */
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
 *
2782 2783 2784 2785
 * 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.
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 */
struct ieee80211_rate *
ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
			    u32 basic_rates, int bitrate);

/*
 * Radiotap parsing functions -- for controlled injection support
 *
 * Implemented in net/wireless/radiotap.c
 * Documentation in Documentation/networking/radiotap-headers.txt
 */

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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;
};

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/**
 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
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 * @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.
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 */

struct ieee80211_radiotap_iterator {
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	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;
2849
	__le32 *_next_bitmap;
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	unsigned char *this_arg;
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	int this_arg_index;
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	int this_arg_size;
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	int is_radiotap_ns;

	int _max_length;
	int _arg_index;
	uint32_t _bitmap_shifter;
	int _reset_on_ext;
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};

extern int ieee80211_radiotap_iterator_init(
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	struct ieee80211_radiotap_iterator *iterator,
	struct ieee80211_radiotap_header *radiotap_header,
	int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns);
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extern int ieee80211_radiotap_iterator_next(
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	struct ieee80211_radiotap_iterator *iterator);

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2872 2873 2874 2875 2876 2877
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
 *
2878 2879
 * @skb: the frame
 *
2880
 * Given an skb with a raw 802.11 header at the data pointer this function
2881
 * returns the 802.11 header length.
2882
 *
2883 2884 2885
 * 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.
2886 2887 2888 2889 2890 2891
 */
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
2892
 * Return: The header length in bytes.
2893
 */
2894
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
2895

2896 2897 2898 2899
/**
 * ieee80211_get_mesh_hdrlen - get mesh extension header length
 * @meshhdr: the mesh extension header, only the flags field
 *	(first byte) will be accessed
2900
 * Return: The length of the extension header, which is always at
2901 2902 2903 2904
 * least 6 bytes and at most 18 if address 5 and 6 are present.
 */
unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);

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/**
 * 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.
 */

2913 2914 2915 2916 2917
/**
 * 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
2918
 * Return: 0 on success. Non-zero on error.
2919
 */
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int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
2921 2922 2923 2924 2925 2926 2927 2928 2929
			   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
2930
 * Return: 0 on success, or a negative error code.
2931
 */
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int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
2933 2934
			     enum nl80211_iftype iftype, u8 *bssid, bool qos);

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/**
 * 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.
2948
 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header.
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 */
void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
			      const u8 *addr, enum nl80211_iftype iftype,
2952 2953
			      const unsigned int extra_headroom,
			      bool has_80211_header);
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2955 2956 2957
/**
 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
 * @skb: the data frame
2958
 * Return: The 802.1p/1d tag.
2959 2960 2961
 */
unsigned int cfg80211_classify8021d(struct sk_buff *skb);

2962 2963 2964 2965 2966 2967 2968
/**
 * cfg80211_find_ie - find information element in data
 *
 * @eid: element ID
 * @ies: data consisting of IEs
 * @len: length of data
 *
2969 2970 2971 2972 2973 2974 2975
 * 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.
2976 2977 2978
 */
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);

2979 2980 2981 2982 2983 2984 2985 2986
/**
 * 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
 *
2987 2988 2989 2990 2991 2992 2993
 * 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.
2994 2995 2996 2997
 */
const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
				  const u8 *ies, int len);

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/**
 * DOC: Regulatory enforcement infrastructure
 *
 * TODO
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 */

/**
 * 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.
3026 3027
 *
 * Return: 0 on success. -ENOMEM.
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 */
extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2);

/**
 * 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.
 */
extern 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.
 *
3057 3058 3059 3060 3061 3062 3063
 * 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.
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 */
3065 3066
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
					       u32 center_freq);
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/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

3073 3074 3075 3076 3077 3078 3079 3080 3081
/**
 * 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);

3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099
/**
 * 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);

3100
/**
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Johannes Berg 已提交
3101
 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame
3102 3103
 *
 * @wiphy: the wiphy reporting the BSS
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Johannes Berg 已提交
3104 3105 3106
 * @channel: The channel the frame was received on
 * @mgmt: the management frame (probe response or beacon)
 * @len: length of the management frame
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Johannes Berg 已提交
3107
 * @signal: the signal strength, type depends on the wiphy's signal_type
3108 3109 3110 3111
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
3112
 *
3113 3114
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
3115
 */
3116
struct cfg80211_bss * __must_check
3117 3118 3119
cfg80211_inform_bss_frame(struct wiphy *wiphy,
			  struct ieee80211_channel *channel,
			  struct ieee80211_mgmt *mgmt, size_t len,
J
Johannes Berg 已提交
3120
			  s32 signal, gfp_t gfp);
3121

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Johannes Berg 已提交
3122 3123 3124 3125 3126 3127
/**
 * cfg80211_inform_bss - inform cfg80211 of a new BSS
 *
 * @wiphy: the wiphy reporting the BSS
 * @channel: The channel the frame was received on
 * @bssid: the BSSID of the BSS
3128
 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
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Johannes Berg 已提交
3129 3130 3131 3132 3133 3134 3135 3136 3137
 * @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.
3138
 *
3139 3140
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
J
Johannes Berg 已提交
3141
 */
3142
struct cfg80211_bss * __must_check
3143 3144
cfg80211_inform_bss(struct wiphy *wiphy,
		    struct ieee80211_channel *channel,
3145 3146
		    const u8 *bssid, u64 tsf, u16 capability,
		    u16 beacon_interval, const u8 *ie, size_t ielen,
3147 3148
		    s32 signal, gfp_t gfp);

3149 3150 3151
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162
				      const u8 *ssid, size_t ssid_len,
				      u16 capa_mask, u16 capa_val);
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,
				WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
}

3163 3164 3165 3166
struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
				       struct ieee80211_channel *channel,
				       const u8 *meshid, size_t meshidlen,
				       const u8 *meshcfg);
3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180
/**
 * cfg80211_ref_bss - reference BSS struct
 * @bss: the BSS struct to reference
 *
 * Increments the refcount of the given BSS struct.
 */
void cfg80211_ref_bss(struct cfg80211_bss *bss);

/**
 * cfg80211_put_bss - unref BSS struct
 * @bss: the BSS struct
 *
 * Decrements the refcount of the given BSS struct.
 */
3181
void cfg80211_put_bss(struct cfg80211_bss *bss);
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Johannes Berg 已提交
3182

3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
/**
 * 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);
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Johannes Berg 已提交
3194

3195 3196 3197 3198 3199 3200 3201
/**
 * cfg80211_send_rx_auth - notification of processed authentication
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever an authentication has been processed in
3202 3203
 * station mode. The driver is required to call either this function or
 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth()
3204
 * call. This function may sleep.
3205
 */
3206
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
3207

3208 3209 3210 3211
/**
 * cfg80211_send_auth_timeout - notification of timed out authentication
 * @dev: network device
 * @addr: The MAC address of the device with which the authentication timed out
3212 3213
 *
 * This function may sleep.
3214
 */
3215
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
3216

3217 3218 3219
/**
 * cfg80211_send_rx_assoc - notification of processed association
 * @dev: network device
3220 3221
 * @bss: the BSS struct association was requested for, the struct reference
 *	is owned by cfg80211 after this call
3222 3223 3224 3225
 * @buf: (re)association response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a (re)association response has been
3226 3227
 * processed in station mode. The driver is required to call either this
 * function or cfg80211_send_assoc_timeout() to indicate the result of
3228
 * cfg80211_ops::assoc() call. This function may sleep.
3229
 */
3230 3231
void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
			    const u8 *buf, size_t len);
3232

3233 3234 3235 3236
/**
 * cfg80211_send_assoc_timeout - notification of timed out association
 * @dev: network device
 * @addr: The MAC address of the device with which the association timed out
3237 3238
 *
 * This function may sleep.
3239
 */
3240
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
3241

3242
/**
3243
 * cfg80211_send_deauth - notification of processed deauthentication
3244 3245 3246 3247 3248
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
3249
 * station mode. This includes both received deauthentication frames and
3250
 * locally generated ones. This function may sleep.
3251
 */
3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);

/**
 * __cfg80211_send_deauth - notification of processed deauthentication
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * Like cfg80211_send_deauth(), but doesn't take the wdev lock.
 */
void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
3263 3264

/**
3265
 * cfg80211_send_disassoc - notification of processed disassociation
3266 3267 3268 3269 3270
 * @dev: network device
 * @buf: disassociation response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever disassociation has been processed in
3271
 * station mode. This includes both received disassociation frames and locally
3272
 * generated ones. This function may sleep.
3273
 */
3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);

/**
 * __cfg80211_send_disassoc - notification of processed disassociation
 * @dev: network device
 * @buf: disassociation response frame (header + body)
 * @len: length of the frame data
 *
 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock.
 */
void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf,
	size_t len);
3286

3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312
/**
 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a received Deauthentication frame has been
 * dropped in station mode because of MFP being used but the Deauthentication
 * frame was not protected. This function may sleep.
 */
void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
				 size_t len);

/**
 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation
 * @dev: network device
 * @buf: disassociation frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a received Disassociation frame has been
 * dropped in station mode because of MFP being used but the Disassociation
 * frame was not protected. This function may sleep.
 */
void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
				   size_t len);

3313 3314 3315 3316 3317
/**
 * 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
3318
 * @key_id: Key identifier (0..3). Can be -1 if missing.
3319
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
3320
 * @gfp: allocation flags
3321 3322 3323 3324 3325 3326 3327
 *
 * 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,
3328
				  const u8 *tsc, gfp_t gfp);
3329

J
Johannes Berg 已提交
3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345
/**
 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
 *
 * @dev: network device
 * @bssid: the BSSID 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, gfp_t gfp);

3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361
/**
 * 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);

J
Johannes Berg 已提交
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375
/**
 * 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.
 */

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Johannes Berg 已提交
3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394
/**
 * 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);

3395
#ifdef CONFIG_NL80211_TESTMODE
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Johannes Berg 已提交
3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406
/**
 * 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.
 */

3407 3408 3409 3410 3411 3412 3413 3414 3415 3416
/**
 * 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.
 *
3417 3418 3419 3420 3421 3422 3423
 * 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.
3424 3425 3426
 *
 * When done, call cfg80211_testmode_reply() with the skb and return
 * its error code as the result of the @testmode_cmd operation.
3427 3428
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3429 3430 3431 3432 3433 3434 3435 3436 3437
 */
struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
						  int approxlen);

/**
 * cfg80211_testmode_reply - send the reply skb
 * @skb: The skb, must have been allocated with
 *	cfg80211_testmode_alloc_reply_skb()
 *
3438 3439 3440 3441 3442 3443
 * 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.
3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456
 */
int cfg80211_testmode_reply(struct sk_buff *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.
 *
3457 3458 3459 3460 3461
 * 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.
3462 3463 3464
 *
 * When done filling the skb, call cfg80211_testmode_event() with the
 * skb to send the event.
3465 3466
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483
 */
struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
						  int approxlen, gfp_t 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.
 */
void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp);

#define CFG80211_TESTMODE_CMD(cmd)	.testmode_cmd = (cmd),
W
Wey-Yi Guy 已提交
3484
#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
3485 3486
#else
#define CFG80211_TESTMODE_CMD(cmd)
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Wey-Yi Guy 已提交
3487
#define CFG80211_TESTMODE_DUMP(cmd)
3488 3489
#endif

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Samuel Ortiz 已提交
3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
/**
 * 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
3516
 * @channel: the channel of the new AP
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Samuel Ortiz 已提交
3517 3518 3519 3520 3521 3522 3523 3524 3525 3526
 * @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.
 */
3527 3528 3529
void cfg80211_roamed(struct net_device *dev,
		     struct ieee80211_channel *channel,
		     const u8 *bssid,
S
Samuel Ortiz 已提交
3530 3531 3532
		     const u8 *req_ie, size_t req_ie_len,
		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558
/**
 * 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);

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Samuel Ortiz 已提交
3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573
/**
 * 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,
			   u8 *ie, size_t ie_len, gfp_t gfp);

3574 3575
/**
 * cfg80211_ready_on_channel - notification of remain_on_channel start
3576
 * @wdev: wireless device
3577 3578 3579 3580 3581 3582
 * @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
 */
3583
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
3584 3585 3586 3587 3588
			       struct ieee80211_channel *chan,
			       unsigned int duration, gfp_t gfp);

/**
 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
3589
 * @wdev: wireless device
3590 3591 3592 3593
 * @cookie: the request cookie
 * @chan: The current channel (from remain_on_channel request)
 * @gfp: allocation flags
 */
3594
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
3595 3596
					struct ieee80211_channel *chan,
					gfp_t gfp);
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Samuel Ortiz 已提交
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3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609

/**
 * 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);

3610 3611 3612 3613 3614 3615 3616 3617 3618
/**
 * cfg80211_del_sta - notify userspace about deletion of a station
 *
 * @dev: the netdev
 * @mac_addr: the station's address
 * @gfp: allocation flags
 */
void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp);

3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637
/**
 * 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);

3638
/**
3639
 * cfg80211_rx_mgmt - notification of received, unprocessed management frame
3640
 * @wdev: wireless device receiving the frame
3641
 * @freq: Frequency on which the frame was received in MHz
3642
 * @sig_dbm: signal strength in mBm, or 0 if unknown
3643
 * @buf: Management frame (header + body)
3644 3645
 * @len: length of the frame data
 * @gfp: context flags
3646
 *
3647 3648 3649 3650
 * 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.
3651 3652 3653
 * 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.
3654
 */
3655
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
3656
		      const u8 *buf, size_t len, gfp_t gfp);
3657 3658

/**
3659
 * cfg80211_mgmt_tx_status - notification of TX status for management frame
3660
 * @wdev: wireless device receiving the frame
3661 3662
 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
 * @buf: Management frame (header + body)
3663 3664 3665 3666
 * @len: length of the frame data
 * @ack: Whether frame was acknowledged
 * @gfp: context flags
 *
3667 3668
 * 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
3669 3670
 * transmission attempt.
 */
3671
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
3672
			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
3673

3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687

/**
 * 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);

3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699
/**
 * 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);

3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714
/**
 * 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);

3715 3716 3717 3718 3719
/**
 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
 * @dev: network device
 * @bssid: BSSID of AP (to avoid races)
 * @replay_ctr: new replay counter
J
Johannes Berg 已提交
3720
 * @gfp: allocation flags
3721 3722 3723 3724
 */
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
			       const u8 *replay_ctr, gfp_t gfp);

3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735
/**
 * 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);

3736 3737 3738 3739 3740 3741 3742 3743 3744
/**
 * 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.
3745
 * Return: %true if the frame was passed to userspace (or this failed
3746 3747 3748 3749 3750
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_spurious_frame(struct net_device *dev,
				const u8 *addr, gfp_t gfp);

3751 3752 3753 3754 3755 3756 3757 3758 3759 3760
/**
 * 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.
3761
 * Return: %true if the frame was passed to userspace (or this failed
3762 3763 3764 3765 3766
 * 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);

J
Johannes Berg 已提交
3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777
/**
 * 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);

3778 3779 3780 3781 3782 3783
/**
 * 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
3784
 * @sig_dbm: signal strength in mBm, or 0 if unknown
3785 3786 3787 3788 3789 3790 3791
 *
 * 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,
3792
				 int freq, int sig_dbm);
3793

3794
/**
3795
 * cfg80211_reg_can_beacon - check if beaconing is allowed
3796
 * @wiphy: the wiphy
3797
 * @chandef: the channel definition
3798
 *
3799 3800
 * 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.)
3801
 */
3802 3803
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
			     struct cfg80211_chan_def *chandef);
3804

3805 3806 3807
/*
 * cfg80211_ch_switch_notify - update wdev channel and notify userspace
 * @dev: the device which switched channels
3808
 * @chandef: the new channel definition
3809 3810 3811
 *
 * Acquires wdev_lock, so must only be called from sleepable driver context!
 */
3812 3813
void cfg80211_ch_switch_notify(struct net_device *dev,
			       struct cfg80211_chan_def *chandef);
3814

3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833
/*
 * 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);

3834 3835 3836 3837 3838 3839
/*
 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
 * @rate: given rate_info to calculate bitrate from
 *
 * return 0 if MCS index >= 32
 */
3840
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
3841

3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857
/**
 * 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);

3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869
/**
 * 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.
 *
3870 3871 3872
 * 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).
3873
 */
3874 3875 3876
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
			  enum ieee80211_p2p_attr_id attr,
			  u8 *buf, unsigned int bufsize);
3877

3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892
/**
 * 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);

3893 3894 3895 3896 3897
/* Logging, debugging and troubleshooting/diagnostic helpers. */

/* wiphy_printk helpers, similar to dev_printk */

#define wiphy_printk(level, wiphy, format, args...)		\
3898
	dev_printk(level, &(wiphy)->dev, format, ##args)
3899
#define wiphy_emerg(wiphy, format, args...)			\
3900
	dev_emerg(&(wiphy)->dev, format, ##args)
3901
#define wiphy_alert(wiphy, format, args...)			\
3902
	dev_alert(&(wiphy)->dev, format, ##args)
3903
#define wiphy_crit(wiphy, format, args...)			\
3904
	dev_crit(&(wiphy)->dev, format, ##args)
3905
#define wiphy_err(wiphy, format, args...)			\
3906
	dev_err(&(wiphy)->dev, format, ##args)
3907
#define wiphy_warn(wiphy, format, args...)			\
3908
	dev_warn(&(wiphy)->dev, format, ##args)
3909
#define wiphy_notice(wiphy, format, args...)			\
3910
	dev_notice(&(wiphy)->dev, format, ##args)
3911
#define wiphy_info(wiphy, format, args...)			\
3912
	dev_info(&(wiphy)->dev, format, ##args)
3913

3914
#define wiphy_debug(wiphy, format, args...)			\
3915
	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
3916

3917
#define wiphy_dbg(wiphy, format, args...)			\
3918
	dev_dbg(&(wiphy)->dev, format, ##args)
3919 3920 3921 3922 3923 3924 3925 3926

#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);	\
3927
	0;								\
3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938
})
#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);

3939
#endif /* __NET_CFG80211_H */