cfg80211.h 149.4 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 <linux/net.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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 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
 *	this flag indicates that an 80 MHz channel cannot use this
 *	channel as the control or any of the secondary channels.
 *	This may be due to the driver or due to regulatory bandwidth
 *	restrictions.
 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
 *	this flag indicates that an 160 MHz channel cannot use this
 *	channel as the control or any of the secondary channels.
 *	This may be due to the driver or due to regulatory bandwidth
 *	restrictions.
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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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	IEEE80211_CHAN_NO_80MHZ		= 1<<7,
	IEEE80211_CHAN_NO_160MHZ	= 1<<8,
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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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#define IEEE80211_DFS_MIN_CAC_TIME_MS		60000
#define IEEE80211_DFS_MIN_NOP_TIME_MS		(30 * 60 * 1000)

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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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 * @dfs_state: current state of this channel. Only relevant if radar is required
 *	on this channel.
 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered.
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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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	enum nl80211_dfs_state dfs_state;
	unsigned long dfs_state_entered;
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};

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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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 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz 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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	IEEE80211_RATE_SUPPORTS_5MHZ	= 1<<5,
	IEEE80211_RATE_SUPPORTS_10MHZ	= 1<<6,
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};
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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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/**
 * ieee80211_chandef_rate_flags - returns rate flags for a channel
 *
 * In some channel types, not all rates may be used - for example CCK
 * rates may not be used in 5/10 MHz channels.
 *
 * @chandef: channel definition for the channel
 *
 * Returns: rate flags which apply for this channel
 */
static inline enum ieee80211_rate_flags
ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_5:
		return IEEE80211_RATE_SUPPORTS_5MHZ;
	case NL80211_CHAN_WIDTH_10:
		return IEEE80211_RATE_SUPPORTS_10MHZ;
	default:
		break;
	}
	return 0;
}

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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;
};

579 580 581 582
struct mac_address {
	u8 addr[ETH_ALEN];
};

583 584 585 586
/**
 * struct cfg80211_acl_data - Access control list data
 *
 * @acl_policy: ACL policy to be applied on the station's
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 *	entry specified by mac_addr
588 589 590 591 592 593 594 595 596 597 598
 * @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[];
};

599 600 601 602 603
/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
604
 * @chandef: defines the channel to use
605 606 607 608 609 610 611 612 613 614
 * @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)
615
 * @inactivity_timeout: time in seconds to determine station's inactivity.
616 617
 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
618 619
 * @acl: ACL configuration used by the drivers which has support for
 *	MAC address based access control
620
 * @radar_required: set if radar detection is required
621 622
 */
struct cfg80211_ap_settings {
623
	struct cfg80211_chan_def chandef;
624

625 626 627
	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
628 629 630
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
631 632 633
	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
634
	int inactivity_timeout;
635 636
	u8 p2p_ctwindow;
	bool p2p_opp_ps;
637
	const struct cfg80211_acl_data *acl;
638
	bool radar_required;
639 640
};

641 642 643
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
644
 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
645
 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
646 647 648 649 650 651
 *
 * 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),
652
	STATION_PARAM_APPLY_CAPABILITY = BIT(1),
653
	STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
654 655
};

656 657 658 659 660 661 662 663 664
/**
 * 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
665 666 667 668
 * @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_...))
669 670
 * @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
672
 * @plink_state: set the peer link state for a station
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 * @ht_capa: HT capabilities of station
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 * @vht_capa: VHT capabilities of station
675 676 677 678
 * @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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 * @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
682 683
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
684 685 686
 * @capability: station capability
 * @ext_capab: extended capabilities of the station
 * @ext_capab_len: number of extended capabilities
687 688
 */
struct station_parameters {
689
	const u8 *supported_rates;
690
	struct net_device *vlan;
691
	u32 sta_flags_mask, sta_flags_set;
692
	u32 sta_modify_mask;
693 694 695
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
696
	u8 plink_action;
697
	u8 plink_state;
698 699
	const struct ieee80211_ht_cap *ht_capa;
	const struct ieee80211_vht_cap *vht_capa;
700 701
	u8 uapsd_queues;
	u8 max_sp;
702
	enum nl80211_mesh_power_mode local_pm;
703
	u16 capability;
704
	const u8 *ext_capab;
705
	u8 ext_capab_len;
706 707
};

708 709 710 711 712 713 714 715 716 717 718 719 720
/**
 * enum cfg80211_station_type - the type of station being modified
 * @CFG80211_STA_AP_CLIENT: client of an AP interface
 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has
 *	the AP MLME in the device
 * @CFG80211_STA_AP_STA: AP station on managed interface
 * @CFG80211_STA_IBSS: IBSS station
 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry
 *	while TDLS setup is in progress, it moves out of this state when
 *	being marked authorized; use this only if TDLS with external setup is
 *	supported/used)
 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active
 *	entry that is operating, has been marked authorized by userspace)
721 722
 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
723 724 725 726 727 728 729 730
 */
enum cfg80211_station_type {
	CFG80211_STA_AP_CLIENT,
	CFG80211_STA_AP_MLME_CLIENT,
	CFG80211_STA_AP_STA,
	CFG80211_STA_IBSS,
	CFG80211_STA_TDLS_PEER_SETUP,
	CFG80211_STA_TDLS_PEER_ACTIVE,
731 732
	CFG80211_STA_MESH_PEER_KERNEL,
	CFG80211_STA_MESH_PEER_USER,
733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
};

/**
 * cfg80211_check_station_change - validate parameter changes
 * @wiphy: the wiphy this operates on
 * @params: the new parameters for a station
 * @statype: the type of station being modified
 *
 * Utility function for the @change_station driver method. Call this function
 * with the appropriate station type looking up the station (and checking that
 * it exists). It will verify whether the station change is acceptable, and if
 * not will return an error code. Note that it may modify the parameters for
 * backward compatibility reasons, so don't use them before calling this.
 */
int cfg80211_check_station_change(struct wiphy *wiphy,
				  struct station_parameters *params,
				  enum cfg80211_station_type statype);

751
/**
752
 * enum station_info_flags - station information flags
753
 *
754 755
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
756
 *
757 758 759
 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 * @STATION_INFO_RX_BYTES: @rx_bytes filled
 * @STATION_INFO_TX_BYTES: @tx_bytes filled
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 * @STATION_INFO_RX_BYTES64: @rx_bytes filled with 64-bit value
 * @STATION_INFO_TX_BYTES64: @tx_bytes filled with 64-bit value
762 763 764
 * @STATION_INFO_LLID: @llid filled
 * @STATION_INFO_PLID: @plid filled
 * @STATION_INFO_PLINK_STATE: @plink_state filled
765
 * @STATION_INFO_SIGNAL: @signal filled
766
 * @STATION_INFO_TX_BITRATE: @txrate fields are filled
767
 *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
768 769
 * @STATION_INFO_RX_PACKETS: @rx_packets filled with 32-bit value
 * @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value
770 771
 * @STATION_INFO_TX_RETRIES: @tx_retries filled
 * @STATION_INFO_TX_FAILED: @tx_failed filled
772
 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
773
 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
774
 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
775
 * @STATION_INFO_BSS_PARAM: @bss_param filled
776
 * @STATION_INFO_CONNECTED_TIME: @connected_time filled
777
 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
778
 * @STATION_INFO_STA_FLAGS: @sta_flags filled
779
 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
780
 * @STATION_INFO_T_OFFSET: @t_offset filled
781 782 783
 * @STATION_INFO_LOCAL_PM: @local_pm filled
 * @STATION_INFO_PEER_PM: @peer_pm filled
 * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
784 785
 * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
 * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled
786
 */
787 788 789 790 791 792 793
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,
794 795
	STATION_INFO_SIGNAL		= 1<<6,
	STATION_INFO_TX_BITRATE		= 1<<7,
796 797
	STATION_INFO_RX_PACKETS		= 1<<8,
	STATION_INFO_TX_PACKETS		= 1<<9,
798 799
	STATION_INFO_TX_RETRIES		= 1<<10,
	STATION_INFO_TX_FAILED		= 1<<11,
800
	STATION_INFO_RX_DROP_MISC	= 1<<12,
801
	STATION_INFO_SIGNAL_AVG		= 1<<13,
802
	STATION_INFO_RX_BITRATE		= 1<<14,
803
	STATION_INFO_BSS_PARAM          = 1<<15,
804
	STATION_INFO_CONNECTED_TIME	= 1<<16,
805
	STATION_INFO_ASSOC_REQ_IES	= 1<<17,
806
	STATION_INFO_STA_FLAGS		= 1<<18,
807 808
	STATION_INFO_BEACON_LOSS_COUNT	= 1<<19,
	STATION_INFO_T_OFFSET		= 1<<20,
809 810 811
	STATION_INFO_LOCAL_PM		= 1<<21,
	STATION_INFO_PEER_PM		= 1<<22,
	STATION_INFO_NONPEER_PM		= 1<<23,
812 813
	STATION_INFO_RX_BYTES64		= 1<<24,
	STATION_INFO_TX_BYTES64		= 1<<25,
814 815
	STATION_INFO_CHAIN_SIGNAL	= 1<<26,
	STATION_INFO_CHAIN_SIGNAL_AVG	= 1<<27,
816 817 818 819 820 821 822 823
};

/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
824 825 826 827 828 829
 * @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
830
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
831
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
832 833
 */
enum rate_info_flags {
834 835 836 837 838 839 840 841
	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),
842 843 844 845 846 847 848 849 850 851
};

/**
 * 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
852
 * @nss: number of streams (VHT only)
853 854 855 856 857
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
858
	u8 nss;
859 860
};

861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
/**
 * 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;
};

892 893
#define IEEE80211_MAX_CHAINS	4

894
/**
895
 * struct station_info - station information
896
 *
897
 * Station information filled by driver for get_station() and dump_station.
898
 *
899
 * @filled: bitflag of flags from &enum station_info_flags
900
 * @connected_time: time(in secs) since a station is last connected
901 902 903
 * @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
904 905 906
 * @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_.
911 912 913
 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg
 * @chain_signal: per-chain signal strength of last received packet in dBm
 * @chain_signal_avg: per-chain signal strength average in dBm
914 915
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
916 917
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
918 919
 * @tx_retries: cumulative retry counts
 * @tx_failed: number of failed transmissions (retries exceeded, no ACK)
920
 * @rx_dropped_misc:  Dropped for un-specified reason.
921
 * @bss_param: current BSS parameters
922 923 924 925
 * @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.
926 927 928 929 930
 * @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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931
 * @sta_flags: station flags mask & values
932
 * @beacon_loss_count: Number of times beacon loss event has triggered.
933
 * @t_offset: Time offset of the station relative to this host.
934 935 936
 * @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
937
 */
938
struct station_info {
939
	u32 filled;
940
	u32 connected_time;
941
	u32 inactive_time;
942 943
	u64 rx_bytes;
	u64 tx_bytes;
944 945 946
	u16 llid;
	u16 plid;
	u8 plink_state;
947
	s8 signal;
948
	s8 signal_avg;
949 950 951 952 953

	u8 chains;
	s8 chain_signal[IEEE80211_MAX_CHAINS];
	s8 chain_signal_avg[IEEE80211_MAX_CHAINS];

954
	struct rate_info txrate;
955
	struct rate_info rxrate;
956 957
	u32 rx_packets;
	u32 tx_packets;
958 959
	u32 tx_retries;
	u32 tx_failed;
960
	u32 rx_dropped_misc;
961
	struct sta_bss_parameters bss_param;
962
	struct nl80211_sta_flag_update sta_flags;
963 964

	int generation;
965 966 967

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
968

969
	u32 beacon_loss_count;
970
	s64 t_offset;
971 972 973
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
974

975 976 977 978
	/*
	 * Note: Add a new enum station_info_flags value for each new field and
	 * use it to check which fields are initialized.
	 */
979 980
};

981 982 983 984 985 986 987 988 989 990 991
/**
 * 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
992
 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
993 994 995 996 997 998 999
 */
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,
1000
	MONITOR_FLAG_ACTIVE		= 1<<NL80211_MNTR_FLAG_ACTIVE,
1001 1002
};

1003 1004 1005 1006 1007 1008
/**
 * 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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1009 1010 1011 1012 1013 1014 1015
 * @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
1016 1017 1018
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
1019
	MPATH_INFO_SN			= BIT(1),
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
	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
1034
 * @sn: target sequence number
1035 1036 1037 1038 1039
 * @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
1040 1041 1042 1043
 * @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.
1044 1045 1046 1047
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
1048
	u32 sn;
1049 1050 1051 1052 1053
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
1054 1055

	int generation;
1056 1057
};

1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
/**
 * 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)
1069 1070 1071
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
1072
 * @ap_isolate: do not forward packets between connected stations
1073 1074
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
1075 1076
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
1077 1078 1079 1080 1081
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
1082 1083
	u8 *basic_rates;
	u8 basic_rates_len;
1084
	int ap_isolate;
1085
	int ht_opmode;
1086
	s8 p2p_ctwindow, p2p_opp_ps;
1087
};
1088

1089
/**
1090 1091 1092
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
 *
 * @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
1141 1142 1143 1144 1145 1146 1147
 *
 * @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.
1148 1149 1150
 * @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.
1151 1152 1153 1154
 * @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.
1155 1156 1157
 * @plink_timeout: If no tx activity is seen from a STA we've established
 *	peering with for longer than this time (in seconds), then remove it
 *	from the STA's list of peers.  Default is 30 minutes.
1158
 */
1159 1160 1161 1162 1163
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
1164 1165 1166
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
1167
	bool auto_open_plinks;
1168
	u32 dot11MeshNbrOffsetMaxNeighbor;
1169
	u8 dot11MeshHWMPmaxPREQretries;
1170 1171 1172 1173
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
1174
	u16 dot11MeshHWMPperrMinInterval;
1175
	u16 dot11MeshHWMPnetDiameterTraversalTime;
1176
	u8 dot11MeshHWMPRootMode;
1177
	u16 dot11MeshHWMPRannInterval;
1178
	bool dot11MeshGateAnnouncementProtocol;
1179
	bool dot11MeshForwarding;
1180
	s32 rssi_threshold;
1181
	u16 ht_opmode;
1182 1183
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
1184
	u16 dot11MeshHWMPconfirmationInterval;
1185 1186
	enum nl80211_mesh_power_mode power_mode;
	u16 dot11MeshAwakeWindowDuration;
1187
	u32 plink_timeout;
1188 1189
};

1190 1191
/**
 * struct mesh_setup - 802.11s mesh setup configuration
1192
 * @chandef: defines the channel to use
1193 1194
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
1195
 * @sync_method: which synchronization method to use
1196 1197
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
1198
 * @auth_id: which authentication method this mesh is using
1199 1200
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
1201 1202
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
1203
 * @user_mpm: userspace handles all MPM functions
1204 1205
 * @dtim_period: DTIM period to use
 * @beacon_interval: beacon interval to use
1206
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
1207
 * @basic_rates: basic rates to use when creating the mesh
1208 1209 1210 1211
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
1212
	struct cfg80211_chan_def chandef;
1213 1214
	const u8 *mesh_id;
	u8 mesh_id_len;
1215 1216 1217
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
1218
	u8 auth_id;
1219 1220
	const u8 *ie;
	u8 ie_len;
1221
	bool is_authenticated;
1222
	bool is_secure;
1223
	bool user_mpm;
1224 1225
	u8 dtim_period;
	u16 beacon_interval;
1226
	int mcast_rate[IEEE80211_NUM_BANDS];
1227
	u32 basic_rates;
1228 1229
};

1230 1231
/**
 * struct ieee80211_txq_params - TX queue parameters
1232
 * @ac: AC identifier
1233 1234 1235 1236 1237 1238 1239 1240
 * @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 {
1241
	enum nl80211_ac ac;
1242 1243 1244 1245 1246 1247
	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.
 */
1270

1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
/**
 * 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.
1287
 * @n_channels: total number of channels to scan
1288 1289
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1290
 * @flags: bit field of flags controlling operation
1291
 * @rates: bitmap of rates to advertise for each band
1292
 * @wiphy: the wiphy this was for
1293
 * @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
1296
 * @notified: (internal) scan request was notified as done or aborted
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 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1298 1299 1300 1301 1302
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1303
	const u8 *ie;
1304
	size_t ie_len;
1305
	u32 flags;
1306

1307 1308
	u32 rates[IEEE80211_NUM_BANDS];

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	struct wireless_dev *wdev;

1311 1312
	/* internal */
	struct wiphy *wiphy;
1313
	unsigned long scan_start;
1314
	bool aborted, notified;
1315
	bool no_cck;
1316 1317 1318

	/* keep last */
	struct ieee80211_channel *channels[0];
1319 1320
};

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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;
};

1330 1331 1332 1333 1334 1335
/**
 * 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
1336
 * @interval: interval between each scheduled scan cycle
1337 1338
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1339
 * @flags: bit field of flags controlling operation
1340 1341 1342 1343 1344
 * @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
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 * @wiphy: the wiphy this was for
 * @dev: the interface
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 * @scan_start: start time of the scheduled scan
1348
 * @channels: channels to scan
1349
 * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
1350 1351 1352 1353 1354
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1355
	u32 interval;
1356 1357
	const u8 *ie;
	size_t ie_len;
1358
	u32 flags;
1359 1360
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1361
	s32 rssi_thold;
1362 1363 1364 1365

	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1366
	unsigned long scan_start;
1367 1368 1369 1370 1371

	/* 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,
};

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/**
 * struct cfg80211_bss_ie_data - BSS entry IE data
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 * @tsf: TSF contained in the frame that carried these IEs
1388 1389 1390 1391 1392
 * @rcu_head: internal use, for freeing
 * @len: length of the IEs
 * @data: IE data
 */
struct cfg80211_bss_ies {
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	u64 tsf;
1394 1395 1396 1397 1398
	struct rcu_head rcu_head;
	int len;
	u8 data[];
};

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/**
 * 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
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 * @bssid: BSSID of the BSS
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
1409 1410 1411 1412
 * @ies: the information elements (Note that there is no guarantee that these
 *	are well-formed!); this is a pointer to either the beacon_ies or
 *	proberesp_ies depending on whether Probe Response frame has been
 *	received. It is always non-%NULL.
1413
 * @beacon_ies: the information elements from the last Beacon frame
1414 1415 1416
 *	(implementation note: if @hidden_beacon_bss is set this struct doesn't
 *	own the beacon_ies, but they're just pointers to the ones from the
 *	@hidden_beacon_bss struct)
1417
 * @proberesp_ies: the information elements from the last Probe Response frame
1418 1419 1420 1421
 * @hidden_beacon_bss: in case this BSS struct represents a probe response from
 *	a BSS that hides the SSID in its beacon, this points to the BSS struct
 *	that holds the beacon data. @beacon_ies is still valid, of course, and
 *	points to the same data as hidden_beacon_bss->beacon_ies in that case.
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 * @signal: signal strength value (type depends on the wiphy's signal_type)
1423 1424 1425 1426 1427
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
	struct ieee80211_channel *channel;

1428 1429 1430 1431
	const struct cfg80211_bss_ies __rcu *ies;
	const struct cfg80211_bss_ies __rcu *beacon_ies;
	const struct cfg80211_bss_ies __rcu *proberesp_ies;

1432
	struct cfg80211_bss *hidden_beacon_bss;
1433 1434 1435

	s32 signal;

1436 1437 1438
	u16 beacon_interval;
	u16 capability;

1439
	u8 bssid[ETH_ALEN];
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	u8 priv[0] __aligned(sizeof(void *));
1442 1443
};

1444 1445 1446 1447
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
1448 1449 1450
 *
 * Note that the return value is an RCU-protected pointer, so
 * rcu_read_lock() must be held when calling this function.
1451
 * Return: %NULL if not found.
1452 1453 1454 1455
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1456 1457 1458 1459 1460
/**
 * 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.
1463 1464 1465
 * @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
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 * @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
1472 1473
 */
struct cfg80211_auth_request {
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	struct cfg80211_bss *bss;
1475 1476
	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;
1480 1481
	const u8 *sae_data;
	size_t sae_data_len;
1482 1483
};

1484 1485 1486 1487
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
1488
 * @ASSOC_REQ_DISABLE_VHT:  Disable VHT
1489 1490 1491
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
1492
	ASSOC_REQ_DISABLE_VHT		= BIT(1),
1493 1494
};

1495 1496 1497 1498 1499
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1500 1501 1502 1503 1504
 * @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())
1505 1506
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1507
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
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 * @crypto: crypto settings
1509
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
1510 1511 1512 1513
 * @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.
1514 1515
 * @vht_capa: VHT capability override
 * @vht_capa_mask: VHT capability mask indicating which fields to use
1516 1517
 */
struct cfg80211_assoc_request {
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	struct cfg80211_bss *bss;
1519
	const u8 *ie, *prev_bssid;
1520
	size_t ie_len;
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	struct cfg80211_crypto_settings crypto;
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	bool use_mfp;
1523 1524 1525
	u32 flags;
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1526
	struct ieee80211_vht_cap vht_capa, vht_capa_mask;
1527 1528 1529 1530 1531 1532 1533 1534
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
1535
 * @bssid: the BSSID of the BSS to deauthenticate from
1536 1537
 * @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
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 * @local_state_change: if set, change local state only and
 *	do not set a deauth frame
1541 1542
 */
struct cfg80211_deauth_request {
1543
	const u8 *bssid;
1544 1545
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1547
	bool local_state_change;
1548 1549 1550 1551 1552 1553 1554 1555
};

/**
 * 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
1557 1558
 * @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
1560 1561
 * @local_state_change: This is a request for a local state only, i.e., no
 *	Disassociation frame is to be transmitted.
1562 1563
 */
struct cfg80211_disassoc_request {
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	struct cfg80211_bss *bss;
1565 1566
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1568
	bool local_state_change;
1569 1570
};

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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.
1581
 * @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
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 * @beacon_interval: beacon interval to use
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 * @privacy: this is a protected network, keys will be configured
 *	after joining
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 * @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.
1593
 * @basic_rates: bitmap of basic rates to use when creating the IBSS
1594
 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
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 */
struct cfg80211_ibss_params {
	u8 *ssid;
	u8 *bssid;
1599
	struct cfg80211_chan_def chandef;
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	u8 *ie;
	u8 ssid_len, ie_len;
1602
	u16 beacon_interval;
1603
	u32 basic_rates;
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	bool channel_fixed;
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	bool privacy;
1606
	bool control_port;
1607
	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
1626
 * @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
1631
 * @flags:  See &enum cfg80211_assoc_req_flags
1632 1633
 * @bg_scan_period:  Background scan period in seconds
 *   or -1 to indicate that default value is to be used.
1634 1635 1636
 * @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.
1637 1638
 * @vht_capa:  VHT Capability overrides
 * @vht_capa_mask: The bits of vht_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;
1649
	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;
1653
	u32 flags;
1654
	int bg_scan_period;
1655 1656
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1657 1658
	struct ieee80211_vht_cap vht_capa;
	struct ieee80211_vht_cap vht_capa_mask;
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};

1661 1662
/**
 * 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
1668 1669 1670 1671 1672 1673
 */
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,
1674
	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
1675 1676
};

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/*
 * cfg80211_bitrate_mask - masks for bitrate control
 */
struct cfg80211_bitrate_mask {
	struct {
		u32 legacy;
1683
		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)
1706
 * @pkt_offset: packet offset (in bytes)
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 *
 * 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;
1714
	int pkt_offset;
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};

1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749
/**
 * struct cfg80211_wowlan_tcp - TCP connection parameters
 *
 * @sock: (internal) socket for source port allocation
 * @src: source IP address
 * @dst: destination IP address
 * @dst_mac: destination MAC address
 * @src_port: source port
 * @dst_port: destination port
 * @payload_len: data payload length
 * @payload: data payload buffer
 * @payload_seq: payload sequence stamping configuration
 * @data_interval: interval at which to send data packets
 * @wake_len: wakeup payload match length
 * @wake_data: wakeup payload match data
 * @wake_mask: wakeup payload match mask
 * @tokens_size: length of the tokens buffer
 * @payload_tok: payload token usage configuration
 */
struct cfg80211_wowlan_tcp {
	struct socket *sock;
	__be32 src, dst;
	u16 src_port, dst_port;
	u8 dst_mac[ETH_ALEN];
	int payload_len;
	const u8 *payload;
	struct nl80211_wowlan_tcp_data_seq payload_seq;
	u32 data_interval;
	u32 wake_len;
	const u8 *wake_data, *wake_mask;
	u32 tokens_size;
	/* must be last, variable member */
	struct nl80211_wowlan_tcp_data_token payload_tok;
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};

/**
 * 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
1762 1763 1764 1765
 * @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
1766 1767
 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
 *	NULL if not configured.
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 */
struct cfg80211_wowlan {
1770 1771 1772
	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;
1774
	struct cfg80211_wowlan_tcp *tcp;
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	int n_patterns;
};

1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793
/**
 * 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.
1794 1795 1796
 * @tcp_match: TCP wakeup packet received
 * @tcp_connlost: TCP connection lost or failed to establish
 * @tcp_nomoretokens: TCP data ran out of tokens
1797 1798 1799 1800
 */
struct cfg80211_wowlan_wakeup {
	bool disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
1801 1802
	     rfkill_release, packet_80211,
	     tcp_match, tcp_connlost, tcp_nomoretokens;
1803 1804 1805 1806 1807
	s32 pattern_idx;
	u32 packet_present_len, packet_len;
	const void *packet;
};

1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819
/**
 * 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];
};

1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834
/**
 * struct cfg80211_update_ft_ies_params - FT IE Information
 *
 * This structure provides information needed to update the fast transition IE
 *
 * @md: The Mobility Domain ID, 2 Octet value
 * @ie: Fast Transition IEs
 * @ie_len: Length of ft_ie in octets
 */
struct cfg80211_update_ft_ies_params {
	u16 md;
	const u8 *ie;
	size_t ie_len;
};

1835 1836 1837 1838 1839 1840 1841 1842 1843
/**
 * 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.
 *
1844 1845 1846 1847
 * 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
1852 1853 1854
 * @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,
1857
 *	must set the struct wireless_dev's iftype. Beware: You must create
1858
 *	the new netdev in the wiphy's network namespace! Returns the struct
1859 1860
 *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
 *	also set the address member in the wdev.
1861
 *
1862
 * @del_virtual_intf: remove the virtual interface
1863
 *
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 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
1866
 *
1867 1868 1869 1870 1871 1872
 * @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
1873 1874
 *	after it returns. This function should return an error if it is
 *	not possible to retrieve the key, -ENOENT if it doesn't exist.
1875 1876
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
1877
 *	and @key_index, return -ENOENT if the key doesn't exist.
1878 1879
 *
 * @set_default_key: set the default key on an interface
1880
 *
1881 1882
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
1883 1884
 * @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.
1889 1890 1891
 *
 * @add_station: Add a new station.
 * @del_station: Remove a station; @mac may be NULL to remove all stations.
1892 1893 1894
 * @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
1895 1896
 *	them, also against the existing state! Drivers must call
 *	cfg80211_check_station_change() to validate the information.
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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
1905
 * @join_mesh: join the mesh network with the specified parameters
1906
 *	(invoked with the wireless_dev mutex held)
1907
 * @leave_mesh: leave the current mesh network
1908
 *	(invoked with the wireless_dev mutex held)
1909
 *
1910
 * @get_mesh_config: Get the current mesh configuration
1911
 *
1912
 * @update_mesh_config: Update mesh parameters on a running mesh.
1913 1914 1915
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
1916
 * @change_bss: Modify parameters for a given BSS.
1917 1918
 *
 * @set_txq_params: Set TX queue parameters
1919
 *
1920 1921 1922 1923 1924 1925 1926 1927
 * @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.
1928
 *
1929 1930 1931 1932
 * @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.
1933 1934
 *
 * @auth: Request to authenticate with the specified peer
1935
 *	(invoked with the wireless_dev mutex held)
1936
 * @assoc: Request to (re)associate with the specified peer
1937
 *	(invoked with the wireless_dev mutex held)
1938
 * @deauth: Request to deauthenticate from the specified peer
1939
 *	(invoked with the wireless_dev mutex held)
1940
 * @disassoc: Request to disassociate from the specified peer
1941
 *	(invoked with the wireless_dev mutex held)
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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.
1947
 *	(invoked with the wireless_dev mutex held)
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 * @disconnect: Disconnect from the BSS/ESS.
1949
 *	(invoked with the wireless_dev mutex held)
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 *
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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.
1954
 *	(invoked with the wireless_dev mutex held)
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 * @leave_ibss: Leave the IBSS.
1956
 *	(invoked with the wireless_dev mutex held)
1957
 *
1958 1959 1960
 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
 *	MESH mode)
 *
1961 1962 1963 1964
 * @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.
1965
 *
1966
 * @set_tx_power: set the transmit power according to the parameters,
1967 1968 1969 1970
 *	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.)
1971
 * @get_tx_power: store the current TX power into the dbm variable;
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 *	return 0 if successful
 *
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 * @set_wds_peer: set the WDS peer for a WDS interface
 *
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 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
 *	functions to adjust rfkill hw state
1978
 *
1979 1980
 * @dump_survey: get site survey information.
 *
1981 1982 1983 1984 1985 1986 1987 1988
 * @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.
1989 1990 1991
 * @mgmt_tx: Transmit a management frame.
 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
 *	frame on another channel
1992
 *
1993
 * @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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 * @set_bitrate_mask: set the bitrate mask configuration
 *
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 * @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.
2008 2009
 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
 *	allows the driver to adjust the dynamic ps timeout value.
2010
 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
2011 2012
 * @set_cqm_txe_config: Configure connection quality monitor TX error
 *	thresholds.
2013
 * @sched_scan_start: Tell the driver to start a scheduled scan.
2014
 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan.
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 *
2016 2017 2018
 * @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.
2019 2020 2021 2022 2023 2024 2025
 *
 * @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).
2026 2027 2028 2029
 *
 * @set_ringparam: Set tx and rx ring sizes.
 *
 * @get_ringparam: Get tx and rx ring current and maximum sizes.
2030 2031 2032
 *
 * @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().
2036 2037
 *
 * @set_noack_map: Set the NoAck Map for the TIDs.
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047
 *
 * @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
2048 2049 2050 2051
 *
 * @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.
2052 2053 2054
 *
 * @start_p2p_device: Start the given P2P device.
 * @stop_p2p_device: Stop the given P2P device.
2055 2056 2057 2058 2059 2060 2061
 *
 * @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.
2062 2063
 *
 * @start_radar_detection: Start radar detection in the driver.
2064 2065 2066 2067
 *
 * @update_ft_ies: Provide updated Fast BSS Transition information to the
 *	driver. If the SME is in the driver/firmware, this information can be
 *	used in building Authentication and Reassociation Request frames.
2068 2069 2070 2071 2072 2073
 *
 * @crit_proto_start: Indicates a critical protocol needs more link reliability
 *	for a given duration (milliseconds). The protocol is provided so the
 *	driver can take the most appropriate actions.
 * @crit_proto_stop: Indicates critical protocol no longer needs increased link
 *	reliability. This operation can not fail.
2074 2075
 */
struct cfg80211_ops {
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	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
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2077
	int	(*resume)(struct wiphy *wiphy);
2078
	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
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2080
	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
2081
						  const char *name,
2082 2083 2084 2085 2086
						  enum nl80211_iftype type,
						  u32 *flags,
						  struct vif_params *params);
	int	(*del_virtual_intf)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
2087 2088
	int	(*change_virtual_intf)(struct wiphy *wiphy,
				       struct net_device *dev,
2089 2090
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
2091 2092

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
2093
			   u8 key_index, bool pairwise, const u8 *mac_addr,
2094 2095
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
2096 2097
			   u8 key_index, bool pairwise, const u8 *mac_addr,
			   void *cookie,
2098 2099
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
2100
			   u8 key_index, bool pairwise, const u8 *mac_addr);
2101 2102
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
2103
				   u8 key_index, bool unicast, bool multicast);
2104 2105 2106
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
2107

2108 2109 2110 2111 2112
	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);
2113 2114 2115 2116 2117 2118 2119 2120


	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);
2121
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137
			       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);
2138
	int	(*get_mesh_config)(struct wiphy *wiphy,
2139 2140
				struct net_device *dev,
				struct mesh_config *conf);
2141
	int	(*update_mesh_config)(struct wiphy *wiphy,
2142 2143 2144 2145 2146 2147 2148
				      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);

2149 2150
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
2151

2152
	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
2153
				  struct ieee80211_txq_params *params);
2154

2155 2156 2157 2158 2159
	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
					     struct net_device *dev,
					     struct ieee80211_channel *chan);

	int	(*set_monitor_channel)(struct wiphy *wiphy,
2160
				       struct cfg80211_chan_def *chandef);
2161

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	int	(*scan)(struct wiphy *wiphy,
2163
			struct cfg80211_scan_request *request);
2164 2165 2166 2167 2168 2169

	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,
2170
			  struct cfg80211_deauth_request *req);
2171
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
2172
			    struct cfg80211_disassoc_request *req);
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2174 2175 2176 2177 2178
	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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2179 2180 2181
	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);
2182

2183 2184 2185
	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
				  int rate[IEEE80211_NUM_BANDS]);

2186
	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
2187

2188
	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
2189
				enum nl80211_tx_power_setting type, int mbm);
2190 2191
	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
				int *dbm);
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2192

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2193
	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
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2194
				const u8 *addr);
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2195

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2196
	void	(*rfkill_poll)(struct wiphy *wiphy);
2197 2198 2199

#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);
2203
#endif
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2205 2206 2207 2208 2209
	int	(*set_bitrate_mask)(struct wiphy *wiphy,
				    struct net_device *dev,
				    const u8 *peer,
				    const struct cfg80211_bitrate_mask *mask);

2210 2211 2212
	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
			int idx, struct survey_info *info);

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2213 2214 2215 2216 2217 2218
	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);

2219
	int	(*remain_on_channel)(struct wiphy *wiphy,
2220
				     struct wireless_dev *wdev,
2221 2222 2223 2224
				     struct ieee80211_channel *chan,
				     unsigned int duration,
				     u64 *cookie);
	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
2225
					    struct wireless_dev *wdev,
2226 2227
					    u64 cookie);

2228
	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
2229
			  struct ieee80211_channel *chan, bool offchan,
2230 2231
			  unsigned int wait, const u8 *buf, size_t len,
			  bool no_cck, bool dont_wait_for_ack, u64 *cookie);
2232
	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
2233
				       struct wireless_dev *wdev,
2234
				       u64 cookie);
2235

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2236 2237
	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
				  bool enabled, int timeout);
2238 2239 2240 2241

	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
				       struct net_device *dev,
				       s32 rssi_thold, u32 rssi_hyst);
2242

2243 2244 2245 2246
	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
				      struct net_device *dev,
				      u32 rate, u32 pkts, u32 intvl);

2247
	void	(*mgmt_frame_register)(struct wiphy *wiphy,
2248
				       struct wireless_dev *wdev,
2249
				       u16 frame_type, bool reg);
2250 2251 2252

	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
2253 2254 2255 2256

	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);
2257 2258 2259 2260

	int	(*sched_scan_start)(struct wiphy *wiphy,
				struct net_device *dev,
				struct cfg80211_sched_scan_request *request);
2261
	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
2262 2263 2264

	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_gtk_rekey_data *data);
2265 2266 2267 2268 2269 2270

	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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	int	(*probe_client)(struct wiphy *wiphy, struct net_device *dev,
				const u8 *peer, u64 *cookie);
2274

2275 2276 2277 2278
	int	(*set_noack_map)(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map);

2279 2280 2281 2282 2283 2284
	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);
2285

2286
	int	(*get_channel)(struct wiphy *wiphy,
2287
			       struct wireless_dev *wdev,
2288
			       struct cfg80211_chan_def *chandef);
2289 2290 2291 2292 2293

	int	(*start_p2p_device)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
	void	(*stop_p2p_device)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2294 2295 2296

	int	(*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
			       const struct cfg80211_acl_data *params);
2297 2298 2299 2300

	int	(*start_radar_detection)(struct wiphy *wiphy,
					 struct net_device *dev,
					 struct cfg80211_chan_def *chandef);
2301 2302
	int	(*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
				 struct cfg80211_update_ft_ies_params *ftie);
2303 2304 2305 2306 2307 2308
	int	(*crit_proto_start)(struct wiphy *wiphy,
				    struct wireless_dev *wdev,
				    enum nl80211_crit_proto_id protocol,
				    u16 duration);
	void	(*crit_proto_stop)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2309 2310
};

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2311 2312 2313 2314 2315 2316
/*
 * wireless hardware and networking interfaces structures
 * and registration/helper functions
 */

/**
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2317 2318 2319
 * enum wiphy_flags - wiphy capability flags
 *
 * @WIPHY_FLAG_CUSTOM_REGULATORY:  tells us the driver for this device
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2320 2321 2322 2323
 * 	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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2324 2325
 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will
 *	ignore regulatory domain settings until it gets its own regulatory
2326 2327 2328 2329 2330 2331 2332
 *	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
2333 2334 2335
 *	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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2336 2337 2338
 * @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
2339
 *	hints read the documenation for regulatory_hint_found_beacon()
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2340 2341 2342 2343 2344 2345
 * @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
2346 2347 2348
 * @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
2349 2350 2351
 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
 *	control port protocol ethertype. The device also honours the
 *	control_port_no_encrypt flag.
2352
 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
2353 2354
 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
 *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
2355
 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
2356 2357
 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
 *	firmware.
2358
 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
2359 2360 2361 2362 2363 2364
 * @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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2365
 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
2366 2367 2368
 * @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().
2369 2370
 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
 *	responds to probe-requests in hardware.
2371 2372
 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
2373
 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
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2374 2375
 */
enum wiphy_flags {
2376 2377 2378 2379 2380 2381 2382 2383
	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),
2384
	WIPHY_FLAG_IBSS_RSN			= BIT(8),
2385
	WIPHY_FLAG_MESH_AUTH			= BIT(10),
2386
	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
2387
	/* use hole at 12 */
2388
	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
2389
	WIPHY_FLAG_AP_UAPSD			= BIT(14),
2390 2391
	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
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2392
	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
2393
	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
2394
	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
2395 2396
	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
2397
	WIPHY_FLAG_SUPPORTS_5_10_MHZ		= BIT(22),
2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419
};

/**
 * 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.
2420
 * @radar_detect_widths: bitmap of channel widths supported for radar detection
2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
 *
 * 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;
2473
	u8 radar_detect_widths;
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2474 2475
};

2476 2477 2478 2479
struct ieee80211_txrx_stypes {
	u16 tx, rx;
};

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2480 2481 2482 2483 2484 2485 2486 2487 2488 2489
/**
 * 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
2490 2491 2492 2493 2494
 * @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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2495 2496
 */
enum wiphy_wowlan_support_flags {
2497 2498 2499 2500 2501 2502 2503 2504
	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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2505 2506
};

2507 2508 2509 2510 2511 2512 2513 2514
struct wiphy_wowlan_tcp_support {
	const struct nl80211_wowlan_tcp_data_token_feature *tok;
	u32 data_payload_max;
	u32 data_interval_max;
	u32 wake_payload_max;
	bool seq;
};

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2515 2516 2517 2518 2519 2520 2521
/**
 * 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
2522
 * @max_pkt_offset: maximum Rx packet offset
2523
 * @tcp: TCP wakeup support information
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 */
struct wiphy_wowlan_support {
	u32 flags;
	int n_patterns;
	int pattern_max_len;
	int pattern_min_len;
2530
	int max_pkt_offset;
2531
	const struct wiphy_wowlan_tcp_support *tcp;
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};

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/**
 * struct wiphy - wireless hardware description
2536 2537 2538
 * @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
2546 2547 2548 2549 2550
 * @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
2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563
 * @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.
2564 2565
 * @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
2569
 * @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
2574 2575 2576 2577 2578
 * @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
2580
 * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
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 * @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
2585 2586
 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
 *	for in any given scheduled scan
2587 2588 2589
 * @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
2593 2594
 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled
 *	scans
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 * @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
2602 2603 2604 2605
 *
 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
 *	transmitted through nl80211, points to an array indexed by interface
 *	type
2606
 *
2607 2608 2609 2610 2611 2612 2613
 * @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.
2614
 *
2615 2616 2617 2618 2619
 * @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.
 *
2620 2621
 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
 *	may request, if implemented.
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 *
 * @wowlan: WoWLAN support information
2624 2625 2626
 * @wowlan_config: current WoWLAN configuration; this should usually not be
 *	used since access to it is necessarily racy, use the parameter passed
 *	to the suspend() operation instead.
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 *
 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
2629 2630
 * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
 *	If null, then none can be over-ridden.
2631 2632
 * @vht_capa_mod_mask:  Specify what VHT capabilities can be over-ridden.
 *	If null, then none can be over-ridden.
2633 2634 2635
 *
 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
 *	supports for ACL.
2636 2637 2638 2639 2640 2641 2642 2643
 *
 * @extended_capabilities: extended capabilities supported by the driver,
 *	additional capabilities might be supported by userspace; these are
 *	the 802.11 extended capabilities ("Extended Capabilities element")
 *	and are in the same format as in the information element. See
 *	802.11-2012 8.4.2.29 for the defined fields.
 * @extended_capabilities_mask: mask of the valid values
 * @extended_capabilities_len: length of the extended capabilities
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 */
struct wiphy {
	/* assign these fields before you register the wiphy */

2648
	/* permanent MAC address(es) */
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	u8 perm_addr[ETH_ALEN];
2650 2651 2652
	u8 addr_mask[ETH_ALEN];

	struct mac_address *addresses;
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2654 2655
	const struct ieee80211_txrx_stypes *mgmt_stypes;

2656 2657 2658 2659
	const struct ieee80211_iface_combination *iface_combinations;
	int n_iface_combinations;
	u16 software_iftypes;

2660 2661
	u16 n_addresses;

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

2665 2666
	u16 max_acl_mac_addrs;

2667
	u32 flags, features;
2668

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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;
2675
	u8 max_sched_scan_ssids;
2676
	u8 max_match_sets;
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	u16 max_scan_ie_len;
2678
	u16 max_sched_scan_ie_len;
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	int n_cipher_suites;
	const u32 *cipher_suites;

2683 2684 2685 2686
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;
2687
	u8 coverage_class;
2688

2689
	char fw_version[ETHTOOL_FWVERS_LEN];
2690 2691
	u32 hw_version;

2692
#ifdef CONFIG_PM
2693
	const struct wiphy_wowlan_support *wowlan;
2694
	struct cfg80211_wowlan *wowlan_config;
2695
#endif
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2697 2698
	u16 max_remain_on_channel_duration;

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	u8 max_num_pmkids;

2701 2702
	u32 available_antennas_tx;
	u32 available_antennas_rx;
2703

2704 2705 2706 2707 2708 2709 2710
	/*
	 * 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;

2711 2712 2713
	const u8 *extended_capabilities, *extended_capabilities_mask;
	u8 extended_capabilities_len;

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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. */
2719
	const void *privid;
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2720 2721 2722 2723

	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
2724 2725
	void (*reg_notifier)(struct wiphy *wiphy,
			     struct regulatory_request *request);
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	/* fields below are read-only, assigned by cfg80211 */

2729
	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;

2735 2736 2737
	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
	bool registered;

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

2741
	const struct ieee80211_ht_cap *ht_capa_mod_mask;
2742
	const struct ieee80211_vht_cap *vht_capa_mod_mask;
2743

2744 2745 2746 2747 2748
#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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2753
	char priv[0] __aligned(NETDEV_ALIGN);
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2754 2755
};

2756 2757
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
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2758
	return read_pnet(&wiphy->_net);
2759 2760 2761 2762
}

static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
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2763
	write_pnet(&wiphy->_net, net);
2764 2765
}

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/**
 * wiphy_priv - return priv from wiphy
 *
 * @wiphy: the wiphy whose priv pointer to return
2770
 * Return: The priv of @wiphy.
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 */
static inline void *wiphy_priv(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return &wiphy->priv;
}

2778 2779 2780 2781
/**
 * priv_to_wiphy - return the wiphy containing the priv
 *
 * @priv: a pointer previously returned by wiphy_priv
2782
 * Return: The wiphy of @priv.
2783 2784 2785 2786 2787 2788 2789
 */
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
2805
 * 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
2816
 * Return: The name of @wiphy.
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2817
 */
2818
static inline const char *wiphy_name(const struct wiphy *wiphy)
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2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831
{
	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.
 *
2832 2833
 * 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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 */
2835
struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv);
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2836 2837 2838 2839 2840 2841

/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
2842
 * 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 */
2865
struct cfg80211_conn;
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2866
struct cfg80211_internal_bss;
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2867
struct cfg80211_cached_keys;
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2868

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2869
/**
2870
 * struct wireless_dev - wireless device state
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2871
 *
2872 2873 2874 2875 2876 2877 2878 2879 2880 2881
 * 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
2886 2887 2888
 * @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
2890
 * @channel: (private) Used by the internal configuration code to track
2891
 *	the user-set AP, monitor and WDS channel
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 * @preset_chandef: (private) Used by the internal configuration code to
2893
 *	track the channel to be used for AP later
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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
2897 2898
 * @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
2900 2901 2902 2903
 * @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
2904 2905
 * @mgmt_registrations: list of registrations for management frames
 * @mgmt_registrations_lock: lock for the list
2906 2907
 * @mtx: mutex used to lock data in this struct, may be used by drivers
 *	and some API functions require it held
2908 2909
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
2910 2911
 * @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
2912 2913
 * @cac_started: true if DFS channel availability check has been started
 * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
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 * @ps: powersave mode is enabled
 * @ps_timeout: dynamic powersave timeout
 * @ap_unexpected_nlportid: (private) netlink port ID of application
 *	registered for unexpected class 3 frames (AP mode)
 * @conn: (private) cfg80211 software SME connection state machine data
 * @connect_keys: (private) keys to set after connection is established
 * @ibss_fixed: (private) IBSS is using fixed BSSID
 * @event_list: (private) list for internal event processing
 * @event_lock: (private) lock for event list
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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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2929 2930 2931
	struct list_head list;
	struct net_device *netdev;

2932 2933
	u32 identifier;

2934 2935
	struct list_head mgmt_registrations;
	spinlock_t mgmt_registrations_lock;
2936

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	struct mutex mtx;

2939 2940 2941
	bool use_4addr, p2p_started;

	u8 address[ETH_ALEN] __aligned(sizeof(u16));
2942

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	/* currently used for IBSS and SME - might be rearranged later */
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	u8 ssid[IEEE80211_MAX_SSID_LEN];
2945
	u8 ssid_len, mesh_id_len, mesh_id_up_len;
2946
	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 */
2953
	struct cfg80211_chan_def preset_chandef;
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2955 2956 2957
	/* for AP and mesh channel tracking */
	struct ieee80211_channel *channel;

2958 2959
	bool ibss_fixed;

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	bool ps;
	int ps_timeout;

2963 2964
	int beacon_interval;

2965
	u32 ap_unexpected_nlportid;
2966

2967 2968 2969
	bool cac_started;
	unsigned long cac_start_time;

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#ifdef CONFIG_CFG80211_WEXT
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	/* wext data */
2972
	struct {
2973 2974
		struct cfg80211_ibss_params ibss;
		struct cfg80211_connect_params connect;
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		struct cfg80211_cached_keys *keys;
2976 2977
		u8 *ie;
		size_t ie_len;
2978
		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
2979
		u8 ssid[IEEE80211_MAX_SSID_LEN];
2980
		s8 default_key, default_mgmt_key;
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		bool prev_bssid_valid;
2982
	} wext;
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#endif
};

2986 2987 2988 2989 2990 2991 2992
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
2997
 * 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
3014
 * @band: band, necessary due to channel number overlap
3015
 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
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 */
3017
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
3022
 * 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
3039
 * 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
 *
3054 3055 3056 3057
 * 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);

3063 3064 3065 3066 3067 3068 3069 3070 3071
/**
 * ieee80211_mandatory_rates - get mandatory rates for a given band
 * @sband: the band to look for rates in
 *
 * This function returns a bitmap of the mandatory rates for the given
 * band, bits are set according to the rate position in the bitrates array.
 */
u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband);

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/*
 * 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;
3130
	__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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3153 3154 3155 3156 3157 3158
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
 *
3159 3160
 * @skb: the frame
 *
3161
 * Given an skb with a raw 802.11 header at the data pointer this function
3162
 * returns the 802.11 header length.
3163
 *
3164 3165 3166
 * 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.
3167 3168 3169 3170 3171 3172
 */
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
3173
 * Return: The header length in bytes.
3174
 */
3175
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
3176

3177 3178 3179 3180
/**
 * ieee80211_get_mesh_hdrlen - get mesh extension header length
 * @meshhdr: the mesh extension header, only the flags field
 *	(first byte) will be accessed
3181
 * Return: The length of the extension header, which is always at
3182 3183 3184 3185
 * 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.
 */

3194 3195 3196 3197 3198
/**
 * 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
3199
 * Return: 0 on success. Non-zero on error.
3200
 */
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int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
3202 3203 3204 3205 3206 3207 3208 3209 3210
			   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
3211
 * Return: 0 on success, or a negative error code.
3212
 */
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int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
3214 3215
			     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.
3229
 * @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,
3233 3234
			      const unsigned int extra_headroom,
			      bool has_80211_header);
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3236 3237 3238
/**
 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
 * @skb: the data frame
3239
 * Return: The 802.1p/1d tag.
3240 3241 3242
 */
unsigned int cfg80211_classify8021d(struct sk_buff *skb);

3243 3244 3245 3246 3247 3248 3249
/**
 * cfg80211_find_ie - find information element in data
 *
 * @eid: element ID
 * @ies: data consisting of IEs
 * @len: length of data
 *
3250 3251 3252 3253 3254 3255 3256
 * 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.
3257 3258 3259
 */
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);

3260 3261 3262 3263 3264 3265 3266 3267
/**
 * 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
 *
3268 3269 3270 3271 3272 3273 3274
 * 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.
3275 3276 3277 3278
 */
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.
3307 3308
 *
 * 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.
 *
3338 3339 3340 3341 3342 3343 3344
 * 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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 */
3346 3347
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
					       u32 center_freq);
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3348 3349 3350 3351 3352 3353

/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

3354 3355 3356 3357 3358 3359 3360 3361 3362
/**
 * 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);

3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380
/**
 * 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);

3381
/**
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3382
 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame
3383 3384
 *
 * @wiphy: the wiphy reporting the BSS
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3385 3386 3387
 * @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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 * @signal: the signal strength, type depends on the wiphy's signal_type
3389 3390 3391 3392
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
3393
 *
3394 3395
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
3396
 */
3397
struct cfg80211_bss * __must_check
3398 3399 3400
cfg80211_inform_bss_frame(struct wiphy *wiphy,
			  struct ieee80211_channel *channel,
			  struct ieee80211_mgmt *mgmt, size_t len,
J
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			  s32 signal, gfp_t gfp);
3402

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/**
 * 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
3409
 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
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 * @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.
3419
 *
3420 3421
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
J
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3422
 */
3423
struct cfg80211_bss * __must_check
3424 3425
cfg80211_inform_bss(struct wiphy *wiphy,
		    struct ieee80211_channel *channel,
3426 3427
		    const u8 *bssid, u64 tsf, u16 capability,
		    u16 beacon_interval, const u8 *ie, size_t ielen,
3428 3429
		    s32 signal, gfp_t gfp);

3430 3431 3432
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443
				      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);
}

3444 3445
/**
 * cfg80211_ref_bss - reference BSS struct
3446
 * @wiphy: the wiphy this BSS struct belongs to
3447 3448 3449 3450
 * @bss: the BSS struct to reference
 *
 * Increments the refcount of the given BSS struct.
 */
3451
void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
3452 3453 3454

/**
 * cfg80211_put_bss - unref BSS struct
3455
 * @wiphy: the wiphy this BSS struct belongs to
3456 3457 3458 3459
 * @bss: the BSS struct
 *
 * Decrements the refcount of the given BSS struct.
 */
3460
void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
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3461

3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472
/**
 * 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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3473

3474
/**
3475
 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
3476 3477 3478 3479
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491
 * This function is called whenever an authentication, disassociation or
 * deauthentication frame has been received and processed in station mode.
 * After being asked to authenticate via cfg80211_ops::auth() the driver must
 * call either this function or cfg80211_auth_timeout().
 * After being asked to associate via cfg80211_ops::assoc() the driver must
 * call either this function or cfg80211_auth_timeout().
 * While connected, the driver must calls this for received and processed
 * disassociation and deauthentication frames. If the frame couldn't be used
 * because it was unprotected, the driver must call the function
 * cfg80211_rx_unprot_mlme_mgmt() instead.
 *
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
3492
 */
3493
void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
3494

3495
/**
3496
 * cfg80211_auth_timeout - notification of timed out authentication
3497 3498
 * @dev: network device
 * @addr: The MAC address of the device with which the authentication timed out
3499
 *
3500 3501
 * This function may sleep. The caller must hold the corresponding wdev's
 * mutex.
3502
 */
3503
void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
3504

3505
/**
3506
 * cfg80211_rx_assoc_resp - notification of processed association response
3507
 * @dev: network device
3508 3509 3510
 * @bss: the BSS that association was requested with, ownership of the pointer
 *	moves to cfg80211 in this call
 * @buf: authentication frame (header + body)
3511 3512
 * @len: length of the frame data
 *
3513 3514 3515 3516
 * After being asked to associate via cfg80211_ops::assoc() the driver must
 * call either this function or cfg80211_auth_timeout().
 *
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
3517
 */
3518 3519
void cfg80211_rx_assoc_resp(struct net_device *dev,
			    struct cfg80211_bss *bss,
3520
			    const u8 *buf, size_t len);
3521

3522
/**
3523
 * cfg80211_assoc_timeout - notification of timed out association
3524 3525
 * @dev: network device
 * @addr: The MAC address of the device with which the association timed out
3526
 *
3527
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
3528
 */
3529
void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr);
3530

3531
/**
3532
 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
3533
 * @dev: network device
3534
 * @buf: 802.11 frame (header + body)
3535 3536 3537
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
3538
 * station mode. This includes both received deauthentication frames and
3539 3540
 * locally generated ones. This function may sleep. The caller must hold the
 * corresponding wdev's mutex.
3541
 */
3542
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
3543

3544
/**
3545
 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
3546 3547 3548 3549
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
3550 3551
 * This function is called whenever a received deauthentication or dissassoc
 * frame has been dropped in station mode because of MFP being used but the
3552 3553
 * frame was not protected. This function may sleep.
 */
3554 3555
void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev,
				  const u8 *buf, size_t len);
3556

3557 3558 3559 3560 3561
/**
 * 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
3562
 * @key_id: Key identifier (0..3). Can be -1 if missing.
3563
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
3564
 * @gfp: allocation flags
3565 3566 3567 3568 3569 3570 3571
 *
 * 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,
3572
				  const u8 *tsc, gfp_t gfp);
3573

J
Johannes Berg 已提交
3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
/**
 * 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);

3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605
/**
 * 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
3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619
/**
 * 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.
 */

J
Johannes Berg 已提交
3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638
/**
 * 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);

3639
#ifdef CONFIG_NL80211_TESTMODE
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Johannes Berg 已提交
3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650
/**
 * 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.
 */

3651 3652 3653 3654 3655 3656 3657 3658 3659 3660
/**
 * 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.
 *
3661 3662 3663 3664 3665 3666 3667
 * 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.
3668 3669 3670
 *
 * When done, call cfg80211_testmode_reply() with the skb and return
 * its error code as the result of the @testmode_cmd operation.
3671 3672
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3673 3674 3675 3676 3677 3678 3679 3680 3681
 */
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()
 *
3682 3683 3684 3685 3686 3687
 * 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.
3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700
 */
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.
 *
3701 3702 3703 3704 3705
 * 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.
3706 3707 3708
 *
 * When done filling the skb, call cfg80211_testmode_event() with the
 * skb to send the event.
3709 3710
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727
 */
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
3728
#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
3729 3730
#else
#define CFG80211_TESTMODE_CMD(cmd)
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Wey-Yi Guy 已提交
3731
#define CFG80211_TESTMODE_DUMP(cmd)
3732 3733
#endif

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Samuel Ortiz 已提交
3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759
/**
 * 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
3760
 * @channel: the channel of the new AP
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Samuel Ortiz 已提交
3761 3762 3763 3764 3765 3766 3767 3768 3769 3770
 * @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.
 */
3771 3772 3773
void cfg80211_roamed(struct net_device *dev,
		     struct ieee80211_channel *channel,
		     const u8 *bssid,
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Samuel Ortiz 已提交
3774 3775 3776
		     const u8 *req_ie, size_t req_ie_len,
		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802
/**
 * 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);

S
Samuel Ortiz 已提交
3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817
/**
 * 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);

3818 3819
/**
 * cfg80211_ready_on_channel - notification of remain_on_channel start
3820
 * @wdev: wireless device
3821 3822 3823 3824 3825 3826
 * @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
 */
3827
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
3828 3829 3830 3831 3832
			       struct ieee80211_channel *chan,
			       unsigned int duration, gfp_t gfp);

/**
 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
3833
 * @wdev: wireless device
3834 3835 3836 3837
 * @cookie: the request cookie
 * @chan: The current channel (from remain_on_channel request)
 * @gfp: allocation flags
 */
3838
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
3839 3840
					struct ieee80211_channel *chan,
					gfp_t gfp);
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Samuel Ortiz 已提交
3841

3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853

/**
 * 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);

3854 3855 3856 3857 3858 3859 3860 3861 3862
/**
 * 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);

3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881
/**
 * 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);

3882
/**
3883
 * cfg80211_rx_mgmt - notification of received, unprocessed management frame
3884
 * @wdev: wireless device receiving the frame
3885
 * @freq: Frequency on which the frame was received in MHz
3886
 * @sig_dbm: signal strength in mBm, or 0 if unknown
3887
 * @buf: Management frame (header + body)
3888 3889
 * @len: length of the frame data
 * @gfp: context flags
3890
 *
3891 3892 3893 3894
 * 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.
3895 3896 3897
 * 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.
3898
 */
3899
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
3900
		      const u8 *buf, size_t len, gfp_t gfp);
3901 3902

/**
3903
 * cfg80211_mgmt_tx_status - notification of TX status for management frame
3904
 * @wdev: wireless device receiving the frame
3905 3906
 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
 * @buf: Management frame (header + body)
3907 3908 3909 3910
 * @len: length of the frame data
 * @ack: Whether frame was acknowledged
 * @gfp: context flags
 *
3911 3912
 * 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
3913 3914
 * transmission attempt.
 */
3915
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
3916
			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
3917

3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931

/**
 * 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);

3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956
/**
 * cfg80211_radar_event - radar detection event
 * @wiphy: the wiphy
 * @chandef: chandef for the current channel
 * @gfp: context flags
 *
 * This function is called when a radar is detected on the current chanenl.
 */
void cfg80211_radar_event(struct wiphy *wiphy,
			  struct cfg80211_chan_def *chandef, gfp_t gfp);

/**
 * cfg80211_cac_event - Channel availability check (CAC) event
 * @netdev: network device
 * @event: type of event
 * @gfp: context flags
 *
 * This function is called when a Channel availability check (CAC) is finished
 * or aborted. This must be called to notify the completion of a CAC process,
 * also by full-MAC drivers.
 */
void cfg80211_cac_event(struct net_device *netdev,
			enum nl80211_radar_event event, gfp_t gfp);


3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968
/**
 * 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);

3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983
/**
 * 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);

3984 3985 3986 3987 3988
/**
 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
 * @dev: network device
 * @bssid: BSSID of AP (to avoid races)
 * @replay_ctr: new replay counter
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Johannes Berg 已提交
3989
 * @gfp: allocation flags
3990 3991 3992 3993
 */
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
			       const u8 *replay_ctr, gfp_t gfp);

3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004
/**
 * 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);

4005 4006 4007 4008 4009 4010 4011 4012 4013
/**
 * 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.
4014
 * Return: %true if the frame was passed to userspace (or this failed
4015 4016 4017 4018 4019
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_spurious_frame(struct net_device *dev,
				const u8 *addr, gfp_t gfp);

4020 4021 4022 4023 4024 4025 4026 4027 4028 4029
/**
 * 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.
4030
 * Return: %true if the frame was passed to userspace (or this failed
4031 4032 4033 4034 4035
 * 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);

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Johannes Berg 已提交
4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046
/**
 * 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);

4047 4048 4049 4050 4051 4052
/**
 * 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
4053
 * @sig_dbm: signal strength in mBm, or 0 if unknown
4054 4055 4056 4057 4058 4059 4060
 *
 * 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,
4061
				 int freq, int sig_dbm);
4062

4063
/**
4064
 * cfg80211_reg_can_beacon - check if beaconing is allowed
4065
 * @wiphy: the wiphy
4066
 * @chandef: the channel definition
4067
 *
4068 4069
 * 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.)
4070
 */
4071 4072
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
			     struct cfg80211_chan_def *chandef);
4073

4074 4075 4076
/*
 * cfg80211_ch_switch_notify - update wdev channel and notify userspace
 * @dev: the device which switched channels
4077
 * @chandef: the new channel definition
4078 4079 4080
 *
 * Acquires wdev_lock, so must only be called from sleepable driver context!
 */
4081 4082
void cfg80211_ch_switch_notify(struct net_device *dev,
			       struct cfg80211_chan_def *chandef);
4083

4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094
/**
 * ieee80211_operating_class_to_band - convert operating class to band
 *
 * @operating_class: the operating class to convert
 * @band: band pointer to fill
 *
 * Returns %true if the conversion was successful, %false otherwise.
 */
bool ieee80211_operating_class_to_band(u8 operating_class,
				       enum ieee80211_band *band);

4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113
/*
 * 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);

4114 4115 4116 4117 4118 4119
/*
 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
 * @rate: given rate_info to calculate bitrate from
 *
 * return 0 if MCS index >= 32
 */
4120
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
4121

4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137
/**
 * 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);

4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161
/**
 * struct cfg80211_ft_event - FT Information Elements
 * @ies: FT IEs
 * @ies_len: length of the FT IE in bytes
 * @target_ap: target AP's MAC address
 * @ric_ies: RIC IE
 * @ric_ies_len: length of the RIC IE in bytes
 */
struct cfg80211_ft_event_params {
	const u8 *ies;
	size_t ies_len;
	const u8 *target_ap;
	const u8 *ric_ies;
	size_t ric_ies_len;
};

/**
 * cfg80211_ft_event - notify userspace about FT IE and RIC IE
 * @netdev: network device
 * @ft_event: IE information
 */
void cfg80211_ft_event(struct net_device *netdev,
		       struct cfg80211_ft_event_params *ft_event);

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/**
 * 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.
 *
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 * 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).
4177
 */
4178 4179 4180
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
			  enum ieee80211_p2p_attr_id attr,
			  u8 *buf, unsigned int bufsize);
4181

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/**
 * 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);

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/**
 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
 *
 * @wdev: the wireless device for which critical protocol is stopped.
4201
 * @gfp: allocation flags
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 *
 * This function can be called by the driver to indicate it has reverted
 * operation back to normal. One reason could be that the duration given
 * by .crit_proto_start() has expired.
 */
void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp);

4209 4210 4211 4212 4213
/* Logging, debugging and troubleshooting/diagnostic helpers. */

/* wiphy_printk helpers, similar to dev_printk */

#define wiphy_printk(level, wiphy, format, args...)		\
4214
	dev_printk(level, &(wiphy)->dev, format, ##args)
4215
#define wiphy_emerg(wiphy, format, args...)			\
4216
	dev_emerg(&(wiphy)->dev, format, ##args)
4217
#define wiphy_alert(wiphy, format, args...)			\
4218
	dev_alert(&(wiphy)->dev, format, ##args)
4219
#define wiphy_crit(wiphy, format, args...)			\
4220
	dev_crit(&(wiphy)->dev, format, ##args)
4221
#define wiphy_err(wiphy, format, args...)			\
4222
	dev_err(&(wiphy)->dev, format, ##args)
4223
#define wiphy_warn(wiphy, format, args...)			\
4224
	dev_warn(&(wiphy)->dev, format, ##args)
4225
#define wiphy_notice(wiphy, format, args...)			\
4226
	dev_notice(&(wiphy)->dev, format, ##args)
4227
#define wiphy_info(wiphy, format, args...)			\
4228
	dev_info(&(wiphy)->dev, format, ##args)
4229

4230
#define wiphy_debug(wiphy, format, args...)			\
4231
	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
4232

4233
#define wiphy_dbg(wiphy, format, args...)			\
4234
	dev_dbg(&(wiphy)->dev, format, ##args)
4235 4236 4237 4238 4239 4240 4241 4242

#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);	\
4243
	0;								\
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})
#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);

4255
#endif /* __NET_CFG80211_H */