cfg80211.h 134.1 KB
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#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
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/*
 * 802.11 device and configuration interface
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
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#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
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#include <linux/bug.h>
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#include <linux/netlink.h>
#include <linux/skbuff.h>
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#include <linux/nl80211.h>
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#include <linux/if_ether.h>
#include <linux/ieee80211.h>
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#include <net/regulatory.h>

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/**
 * DOC: Introduction
 *
 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges
 * userspace and drivers, and offers some utility functionality associated
 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used
 * by all modern wireless drivers in Linux, so that they offer a consistent
 * API through nl80211. For backward compatibility, cfg80211 also offers
 * wireless extensions to userspace, but hides them from drivers completely.
 *
 * Additionally, cfg80211 contains code to help enforce regulatory spectrum
 * use restrictions.
 */


/**
 * DOC: Device registration
 *
 * In order for a driver to use cfg80211, it must register the hardware device
 * with cfg80211. This happens through a number of hardware capability structs
 * described below.
 *
 * The fundamental structure for each device is the 'wiphy', of which each
 * instance describes a physical wireless device connected to the system. Each
 * such wiphy can have zero, one, or many virtual interfaces associated with
 * it, which need to be identified as such by pointing the network interface's
 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes
 * the wireless part of the interface, normally this struct is embedded in the
 * network interface's private data area. Drivers can optionally allow creating
 * or destroying virtual interfaces on the fly, but without at least one or the
 * ability to create some the wireless device isn't useful.
 *
 * Each wiphy structure contains device capability information, and also has
 * a pointer to the various operations the driver offers. The definitions and
 * structures here describe these capabilities in detail.
 */

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struct wiphy;

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/*
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 * wireless hardware capability structures
 */

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

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#define IEEE80211_CHAN_NO_HT40 \
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	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
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/**
 * struct ieee80211_channel - channel definition
 *
 * This structure describes a single channel for use
 * with cfg80211.
 *
 * @center_freq: center frequency in MHz
 * @hw_value: hardware-specific value for the channel
 * @flags: channel flags from &enum ieee80211_channel_flags.
 * @orig_flags: channel flags at registration time, used by regulatory
 *	code to support devices with additional restrictions
 * @band: band this channel belongs to.
 * @max_antenna_gain: maximum antenna gain in dBi
 * @max_power: maximum transmission power (in dBm)
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 * @max_reg_power: maximum regulatory transmission power (in dBm)
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 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
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 *	to enable this, this is useful only on 5 GHz band.
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 * @orig_mag: internal use
 * @orig_mpwr: internal use
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 */
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struct ieee80211_channel {
	enum ieee80211_band band;
	u16 center_freq;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
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	int max_reg_power;
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	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
};

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/**
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 * enum ieee80211_rate_flags - rate flags
 *
 * Hardware/specification flags for rates. These are structured
 * in a way that allows using the same bitrate structure for
 * different bands/PHY modes.
 *
 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
 *	preamble on this bitrate; only relevant in 2.4GHz band and
 *	with CCK rates.
 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
 *	when used with 802.11a (on the 5 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
 *	when used with 802.11b (on the 2.4 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
 *	when used with 802.11g (on the 2.4 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
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 */
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enum ieee80211_rate_flags {
	IEEE80211_RATE_SHORT_PREAMBLE	= 1<<0,
	IEEE80211_RATE_MANDATORY_A	= 1<<1,
	IEEE80211_RATE_MANDATORY_B	= 1<<2,
	IEEE80211_RATE_MANDATORY_G	= 1<<3,
	IEEE80211_RATE_ERP_G		= 1<<4,
};
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/**
 * struct ieee80211_rate - bitrate definition
 *
 * This structure describes a bitrate that an 802.11 PHY can
 * operate with. The two values @hw_value and @hw_value_short
 * are only for driver use when pointers to this structure are
 * passed around.
 *
 * @flags: rate-specific flags
 * @bitrate: bitrate in units of 100 Kbps
 * @hw_value: driver/hardware value for this rate
 * @hw_value_short: driver/hardware value for this rate when
 *	short preamble is used
 */
struct ieee80211_rate {
	u32 flags;
	u16 bitrate;
	u16 hw_value, hw_value_short;
};
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/**
 * struct ieee80211_sta_ht_cap - STA's HT capabilities
 *
 * This structure describes most essential parameters needed
 * to describe 802.11n HT capabilities for an STA.
 *
 * @ht_supported: is HT supported by the STA
 * @cap: HT capabilities map as described in 802.11n spec
 * @ampdu_factor: Maximum A-MPDU length factor
 * @ampdu_density: Minimum A-MPDU spacing
 * @mcs: Supported MCS rates
 */
struct ieee80211_sta_ht_cap {
	u16 cap; /* use IEEE80211_HT_CAP_ */
	bool ht_supported;
	u8 ampdu_factor;
	u8 ampdu_density;
	struct ieee80211_mcs_info mcs;
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};

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/**
 * struct ieee80211_sta_vht_cap - STA's VHT capabilities
 *
 * This structure describes most essential parameters needed
 * to describe 802.11ac VHT capabilities for an STA.
 *
 * @vht_supported: is VHT supported by the STA
 * @cap: VHT capabilities map as described in 802.11ac spec
 * @vht_mcs: Supported VHT MCS rates
 */
struct ieee80211_sta_vht_cap {
	bool vht_supported;
	u32 cap; /* use IEEE80211_VHT_CAP_ */
	struct ieee80211_vht_mcs_info vht_mcs;
};

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/**
 * struct ieee80211_supported_band - frequency band definition
 *
 * This structure describes a frequency band a wiphy
 * is able to operate in.
 *
 * @channels: Array of channels the hardware can operate in
 *	in this band.
 * @band: the band this structure represents
 * @n_channels: Number of channels in @channels
 * @bitrates: Array of bitrates the hardware can operate with
 *	in this band. Must be sorted to give a valid "supported
 *	rates" IE, i.e. CCK rates first, then OFDM.
 * @n_bitrates: Number of bitrates in @bitrates
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 * @ht_cap: HT capabilities in this band
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 * @vht_cap: VHT capabilities in this band
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 */
struct ieee80211_supported_band {
	struct ieee80211_channel *channels;
	struct ieee80211_rate *bitrates;
	enum ieee80211_band band;
	int n_channels;
	int n_bitrates;
	struct ieee80211_sta_ht_cap ht_cap;
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	struct ieee80211_sta_vht_cap vht_cap;
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};
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/*
 * Wireless hardware/device configuration structures and methods
 */
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/**
 * DOC: Actions and configuration
 *
 * Each wireless device and each virtual interface offer a set of configuration
 * operations and other actions that are invoked by userspace. Each of these
 * actions is described in the operations structure, and the parameters these
 * operations use are described separately.
 *
 * Additionally, some operations are asynchronous and expect to get status
 * information via some functions that drivers need to call.
 *
 * Scanning and BSS list handling with its associated functionality is described
 * in a separate chapter.
 */

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/**
 * struct vif_params - describes virtual interface parameters
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 * @use_4addr: use 4-address frames
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 * @macaddr: address to use for this virtual interface. This will only
 * 	be used for non-netdevice interfaces. If this parameter is set
 * 	to zero address the driver may determine the address as needed.
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 */
struct vif_params {
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       int use_4addr;
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       u8 macaddr[ETH_ALEN];
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};
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/**
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 * struct key_params - key information
 *
 * Information about a key
 *
 * @key: key material
 * @key_len: length of key material
 * @cipher: cipher suite selector
 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
 *	with the get_key() callback, must be in little endian,
 *	length given by @seq_len.
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 * @seq_len: length of @seq.
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 */
struct key_params {
	u8 *key;
	u8 *seq;
	int key_len;
	int seq_len;
	u32 cipher;
};

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

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/**
 * cfg80211_get_chandef_type - return old channel type from chandef
 * @chandef: the channel definition
 *
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 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given
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 * chandef, which must have a bandwidth allowing this conversion.
 */
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static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
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	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_20_NOHT:
		return NL80211_CHAN_NO_HT;
	case NL80211_CHAN_WIDTH_20:
		return NL80211_CHAN_HT20;
	case NL80211_CHAN_WIDTH_40:
		if (chandef->center_freq1 > chandef->chan->center_freq)
			return NL80211_CHAN_HT40PLUS;
		return NL80211_CHAN_HT40MINUS;
	default:
		WARN_ON(1);
		return NL80211_CHAN_NO_HT;
	}
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}

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/**
 * cfg80211_chandef_create - create channel definition using channel type
 * @chandef: the channel definition struct to fill
 * @channel: the control channel
 * @chantype: the channel type
 *
 * Given a channel type, create a channel definition.
 */
void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
			     struct ieee80211_channel *channel,
			     enum nl80211_channel_type chantype);

/**
 * cfg80211_chandef_identical - check if two channel definitions are identical
 * @chandef1: first channel definition
 * @chandef2: second channel definition
 *
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 * Return: %true if the channels defined by the channel definitions are
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 * identical, %false otherwise.
 */
static inline bool
cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1,
			   const struct cfg80211_chan_def *chandef2)
{
	return (chandef1->chan == chandef2->chan &&
		chandef1->width == chandef2->width &&
		chandef1->center_freq1 == chandef2->center_freq1 &&
		chandef1->center_freq2 == chandef2->center_freq2);
}

/**
 * cfg80211_chandef_compatible - check if two channel definitions are compatible
 * @chandef1: first channel definition
 * @chandef2: second channel definition
 *
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 * Return: %NULL if the given channel definitions are incompatible,
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 * chandef1 or chandef2 otherwise.
 */
const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
			    const struct cfg80211_chan_def *chandef2);

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/**
 * cfg80211_chandef_valid - check if a channel definition is valid
 * @chandef: the channel definition to check
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 * Return: %true if the channel definition is valid. %false otherwise.
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 */
bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef);

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

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/**
 * enum survey_info_flags - survey information flags
 *
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 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
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 * @SURVEY_INFO_IN_USE: channel is currently being used
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 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in
 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in
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 *
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 * Used by the driver to indicate which info in &struct survey_info
 * it has filled in during the get_survey().
 */
enum survey_info_flags {
	SURVEY_INFO_NOISE_DBM = 1<<0,
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	SURVEY_INFO_IN_USE = 1<<1,
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	SURVEY_INFO_CHANNEL_TIME = 1<<2,
	SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3,
	SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4,
	SURVEY_INFO_CHANNEL_TIME_RX = 1<<5,
	SURVEY_INFO_CHANNEL_TIME_TX = 1<<6,
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};

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

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/**
 * struct cfg80211_crypto_settings - Crypto settings
 * @wpa_versions: indicates which, if any, WPA versions are enabled
 *	(from enum nl80211_wpa_versions)
 * @cipher_group: group key cipher suite (or 0 if unset)
 * @n_ciphers_pairwise: number of AP supported unicast ciphers
 * @ciphers_pairwise: unicast key cipher suites
 * @n_akm_suites: number of AKM suites
 * @akm_suites: AKM suites
 * @control_port: Whether user space controls IEEE 802.1X port, i.e.,
 *	sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
 *	required to assume that the port is unauthorized until authorized by
 *	user space. Otherwise, port is marked authorized by default.
 * @control_port_ethertype: the control port protocol that should be
 *	allowed through even on unauthorized ports
 * @control_port_no_encrypt: TRUE to prevent encryption of control port
 *	protocol frames.
 */
struct cfg80211_crypto_settings {
	u32 wpa_versions;
	u32 cipher_group;
	int n_ciphers_pairwise;
	u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES];
	int n_akm_suites;
	u32 akm_suites[NL80211_MAX_NR_AKM_SUITES];
	bool control_port;
	__be16 control_port_ethertype;
	bool control_port_no_encrypt;
};

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/**
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 * struct cfg80211_beacon_data - beacon data
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 * @head: head portion of beacon (before TIM IE)
 *     or %NULL if not changed
 * @tail: tail portion of beacon (after TIM IE)
 *     or %NULL if not changed
 * @head_len: length of @head
 * @tail_len: length of @tail
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 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL
 * @beacon_ies_len: length of beacon_ies in octets
 * @proberesp_ies: extra information element(s) to add into Probe Response
 *	frames or %NULL
 * @proberesp_ies_len: length of proberesp_ies in octets
 * @assocresp_ies: extra information element(s) to add into (Re)Association
 *	Response frames or %NULL
 * @assocresp_ies_len: length of assocresp_ies in octets
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 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
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 */
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struct cfg80211_beacon_data {
	const u8 *head, *tail;
	const u8 *beacon_ies;
	const u8 *proberesp_ies;
	const u8 *assocresp_ies;
	const u8 *probe_resp;

	size_t head_len, tail_len;
	size_t beacon_ies_len;
	size_t proberesp_ies_len;
	size_t assocresp_ies_len;
	size_t probe_resp_len;
};

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struct mac_address {
	u8 addr[ETH_ALEN];
};

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/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
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 * @chandef: defines the channel to use
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 * @beacon: beacon data
 * @beacon_interval: beacon interval
 * @dtim_period: DTIM period
 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from
 *	user space)
 * @ssid_len: length of @ssid
 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames
 * @crypto: crypto settings
 * @privacy: the BSS uses privacy
 * @auth_type: Authentication type (algorithm)
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 * @inactivity_timeout: time in seconds to determine station's inactivity.
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 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
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 */
struct cfg80211_ap_settings {
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	struct cfg80211_chan_def chandef;
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	struct cfg80211_beacon_data beacon;

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

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/**
 * enum plink_action - actions to perform in mesh peers
 *
 * @PLINK_ACTION_INVALID: action 0 is reserved
 * @PLINK_ACTION_OPEN: start mesh peer link establishment
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 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer
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 */
enum plink_actions {
	PLINK_ACTION_INVALID,
	PLINK_ACTION_OPEN,
	PLINK_ACTION_BLOCK,
};

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/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
 *
 * Not all station parameters have in-band "no change" signalling,
 * for those that don't these flags will are used.
 */
enum station_parameters_apply_mask {
	STATION_PARAM_APPLY_UAPSD = BIT(0),
};

595 596 597 598 599 600 601 602 603
/**
 * 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
604 605 606 607
 * @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_...))
608 609
 * @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
611
 * @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
614 615 616 617
 * @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
621 622
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
623 624 625 626
 */
struct station_parameters {
	u8 *supported_rates;
	struct net_device *vlan;
627
	u32 sta_flags_mask, sta_flags_set;
628
	u32 sta_modify_mask;
629 630 631
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
632
	u8 plink_action;
633
	u8 plink_state;
634
	struct ieee80211_ht_cap *ht_capa;
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	struct ieee80211_vht_cap *vht_capa;
636 637
	u8 uapsd_queues;
	u8 max_sp;
638
	enum nl80211_mesh_power_mode local_pm;
639 640
};

641
/**
642
 * enum station_info_flags - station information flags
643
 *
644 645
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
646
 *
647 648 649 650 651 652
 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 * @STATION_INFO_RX_BYTES: @rx_bytes filled
 * @STATION_INFO_TX_BYTES: @tx_bytes filled
 * @STATION_INFO_LLID: @llid filled
 * @STATION_INFO_PLID: @plid filled
 * @STATION_INFO_PLINK_STATE: @plink_state filled
653
 * @STATION_INFO_SIGNAL: @signal filled
654
 * @STATION_INFO_TX_BITRATE: @txrate fields are filled
655
 *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
656 657
 * @STATION_INFO_RX_PACKETS: @rx_packets filled
 * @STATION_INFO_TX_PACKETS: @tx_packets filled
658 659
 * @STATION_INFO_TX_RETRIES: @tx_retries filled
 * @STATION_INFO_TX_FAILED: @tx_failed filled
660
 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
661
 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
662
 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
663
 * @STATION_INFO_BSS_PARAM: @bss_param filled
664
 * @STATION_INFO_CONNECTED_TIME: @connected_time filled
665
 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
666
 * @STATION_INFO_STA_FLAGS: @sta_flags filled
667
 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
668
 * @STATION_INFO_T_OFFSET: @t_offset filled
669 670 671
 * @STATION_INFO_LOCAL_PM: @local_pm filled
 * @STATION_INFO_PEER_PM: @peer_pm filled
 * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
672
 */
673 674 675 676 677 678 679
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,
680 681
	STATION_INFO_SIGNAL		= 1<<6,
	STATION_INFO_TX_BITRATE		= 1<<7,
682 683
	STATION_INFO_RX_PACKETS		= 1<<8,
	STATION_INFO_TX_PACKETS		= 1<<9,
684 685
	STATION_INFO_TX_RETRIES		= 1<<10,
	STATION_INFO_TX_FAILED		= 1<<11,
686
	STATION_INFO_RX_DROP_MISC	= 1<<12,
687
	STATION_INFO_SIGNAL_AVG		= 1<<13,
688
	STATION_INFO_RX_BITRATE		= 1<<14,
689
	STATION_INFO_BSS_PARAM          = 1<<15,
690
	STATION_INFO_CONNECTED_TIME	= 1<<16,
691
	STATION_INFO_ASSOC_REQ_IES	= 1<<17,
692
	STATION_INFO_STA_FLAGS		= 1<<18,
693 694
	STATION_INFO_BEACON_LOSS_COUNT	= 1<<19,
	STATION_INFO_T_OFFSET		= 1<<20,
695 696 697
	STATION_INFO_LOCAL_PM		= 1<<21,
	STATION_INFO_PEER_PM		= 1<<22,
	STATION_INFO_NONPEER_PM		= 1<<23,
698 699 700 701 702 703 704 705
};

/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
706 707 708 709 710 711
 * @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
712
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
713
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
714 715
 */
enum rate_info_flags {
716 717 718 719 720 721 722 723
	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),
724 725 726 727 728 729 730 731 732 733
};

/**
 * 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
734
 * @nss: number of streams (VHT only)
735 736 737 738 739
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
740
	u8 nss;
741 742
};

743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773
/**
 * 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;
};

774
/**
775
 * struct station_info - station information
776
 *
777
 * Station information filled by driver for get_station() and dump_station.
778
 *
779
 * @filled: bitflag of flags from &enum station_info_flags
780
 * @connected_time: time(in secs) since a station is last connected
781 782 783
 * @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
784 785 786
 * @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_.
791 792
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
793 794
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
795 796
 * @tx_retries: cumulative retry counts
 * @tx_failed: number of failed transmissions (retries exceeded, no ACK)
797
 * @rx_dropped_misc:  Dropped for un-specified reason.
798
 * @bss_param: current BSS parameters
799 800 801 802
 * @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.
803 804 805 806 807
 * @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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808
 * @sta_flags: station flags mask & values
809
 * @beacon_loss_count: Number of times beacon loss event has triggered.
810
 * @t_offset: Time offset of the station relative to this host.
811 812 813
 * @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
814
 */
815
struct station_info {
816
	u32 filled;
817
	u32 connected_time;
818 819 820
	u32 inactive_time;
	u32 rx_bytes;
	u32 tx_bytes;
821 822 823
	u16 llid;
	u16 plid;
	u8 plink_state;
824
	s8 signal;
825
	s8 signal_avg;
826
	struct rate_info txrate;
827
	struct rate_info rxrate;
828 829
	u32 rx_packets;
	u32 tx_packets;
830 831
	u32 tx_retries;
	u32 tx_failed;
832
	u32 rx_dropped_misc;
833
	struct sta_bss_parameters bss_param;
834
	struct nl80211_sta_flag_update sta_flags;
835 836

	int generation;
837 838 839

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
840

841
	u32 beacon_loss_count;
842
	s64 t_offset;
843 844 845
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
846

847 848 849 850
	/*
	 * Note: Add a new enum station_info_flags value for each new field and
	 * use it to check which fields are initialized.
	 */
851 852
};

853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
/**
 * enum monitor_flags - monitor flags
 *
 * Monitor interface configuration flags. Note that these must be the bits
 * according to the nl80211 flags.
 *
 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
 * @MONITOR_FLAG_CONTROL: pass control frames
 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing
 */
enum monitor_flags {
	MONITOR_FLAG_FCSFAIL		= 1<<NL80211_MNTR_FLAG_FCSFAIL,
	MONITOR_FLAG_PLCPFAIL		= 1<<NL80211_MNTR_FLAG_PLCPFAIL,
	MONITOR_FLAG_CONTROL		= 1<<NL80211_MNTR_FLAG_CONTROL,
	MONITOR_FLAG_OTHER_BSS		= 1<<NL80211_MNTR_FLAG_OTHER_BSS,
	MONITOR_FLAG_COOK_FRAMES	= 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
};

873 874 875 876 877 878
/**
 * 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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 * @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
886 887 888
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
889
	MPATH_INFO_SN			= BIT(1),
890 891 892 893 894 895 896 897 898 899 900 901 902 903
	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
904
 * @sn: target sequence number
905 906 907 908 909
 * @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
910 911 912 913
 * @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.
914 915 916 917
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
918
	u32 sn;
919 920 921 922 923
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
924 925

	int generation;
926 927
};

928 929 930 931 932 933 934 935 936 937 938
/**
 * 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)
939 940 941
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
942
 * @ap_isolate: do not forward packets between connected stations
943 944
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
945 946
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
947 948 949 950 951
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
952 953
	u8 *basic_rates;
	u8 basic_rates_len;
954
	int ap_isolate;
955
	int ht_opmode;
956
	s8 p2p_ctwindow, p2p_opp_ps;
957
};
958

959
/**
960 961 962
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
 *
 * @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
1011 1012 1013 1014 1015 1016 1017
 *
 * @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.
1018 1019 1020
 * @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.
1021 1022 1023 1024
 * @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.
1025
 */
1026 1027 1028 1029 1030
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
1031 1032 1033
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
1034
	bool auto_open_plinks;
1035
	u32 dot11MeshNbrOffsetMaxNeighbor;
1036
	u8 dot11MeshHWMPmaxPREQretries;
1037 1038 1039 1040
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
1041
	u16 dot11MeshHWMPperrMinInterval;
1042
	u16 dot11MeshHWMPnetDiameterTraversalTime;
1043
	u8 dot11MeshHWMPRootMode;
1044
	u16 dot11MeshHWMPRannInterval;
1045
	bool dot11MeshGateAnnouncementProtocol;
1046
	bool dot11MeshForwarding;
1047
	s32 rssi_threshold;
1048
	u16 ht_opmode;
1049 1050
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
1051
	u16 dot11MeshHWMPconfirmationInterval;
1052 1053
	enum nl80211_mesh_power_mode power_mode;
	u16 dot11MeshAwakeWindowDuration;
1054 1055
};

1056 1057
/**
 * struct mesh_setup - 802.11s mesh setup configuration
1058
 * @chandef: defines the channel to use
1059 1060
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
1061
 * @sync_method: which synchronization method to use
1062 1063
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
1064 1065
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
1066 1067
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
1068 1069
 * @dtim_period: DTIM period to use
 * @beacon_interval: beacon interval to use
1070
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
1071 1072 1073 1074
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
1075
	struct cfg80211_chan_def chandef;
1076 1077
	const u8 *mesh_id;
	u8 mesh_id_len;
1078 1079 1080
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
1081 1082
	const u8 *ie;
	u8 ie_len;
1083
	bool is_authenticated;
1084
	bool is_secure;
1085 1086
	u8 dtim_period;
	u16 beacon_interval;
1087
	int mcast_rate[IEEE80211_NUM_BANDS];
1088 1089
};

1090 1091
/**
 * struct ieee80211_txq_params - TX queue parameters
1092
 * @ac: AC identifier
1093 1094 1095 1096 1097 1098 1099 1100
 * @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 {
1101
	enum nl80211_ac ac;
1102 1103 1104 1105 1106 1107
	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.
 */
1130

1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146
/**
 * 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.
1147
 * @n_channels: total number of channels to scan
1148 1149
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1150
 * @flags: bit field of flags controlling operation
1151
 * @rates: bitmap of rates to advertise for each band
1152
 * @wiphy: the wiphy this was for
1153
 * @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
1156
 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1157 1158 1159 1160 1161
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1162
	const u8 *ie;
1163
	size_t ie_len;
1164
	u32 flags;
1165

1166 1167
	u32 rates[IEEE80211_NUM_BANDS];

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	struct wireless_dev *wdev;

1170 1171
	/* internal */
	struct wiphy *wiphy;
1172
	unsigned long scan_start;
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	bool aborted;
1174
	bool no_cck;
1175 1176 1177

	/* keep last */
	struct ieee80211_channel *channels[0];
1178 1179
};

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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;
};

1189 1190 1191 1192 1193 1194
/**
 * 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
1195
 * @interval: interval between each scheduled scan cycle
1196 1197
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1198
 * @flags: bit field of flags controlling operation
1199 1200 1201 1202 1203
 * @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
1204 1205 1206
 * @wiphy: the wiphy this was for
 * @dev: the interface
 * @channels: channels to scan
1207
 * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
1208 1209 1210 1211 1212
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1213
	u32 interval;
1214 1215
	const u8 *ie;
	size_t ie_len;
1216
	u32 flags;
1217 1218
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1219
	s32 rssi_thold;
1220 1221 1222 1223

	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1224
	unsigned long scan_start;
1225 1226 1227 1228 1229

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

1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
/**
 * 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,
};

1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
/**
 * struct cfg80211_bss_ie_data - BSS entry IE data
 * @rcu_head: internal use, for freeing
 * @len: length of the IEs
 * @data: IE data
 */
struct cfg80211_bss_ies {
	struct rcu_head rcu_head;
	int len;
	u8 data[];
};

1255 1256 1257 1258 1259 1260
/**
 * 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
1262 1263 1264 1265
 * @bssid: BSSID of the BSS
 * @tsf: timestamp of last received update
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
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 * @ies: the information elements (Note that there
1267 1268 1269 1270 1271
 *	is no guarantee that these are well-formed!); this is a pointer to
 *	either the beacon_ies or proberesp_ies depending on whether Probe
 *	Response frame has been received
 * @beacon_ies: the information elements from the last Beacon frame
 * @proberesp_ies: the information elements from the last Probe Response frame
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 * @signal: signal strength value (type depends on the wiphy's signal_type)
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 * @free_priv: function pointer to free private data
1274 1275 1276
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
1277 1278
	u64 tsf;

1279 1280
	struct ieee80211_channel *channel;

1281 1282 1283 1284 1285 1286 1287 1288
	const struct cfg80211_bss_ies __rcu *ies;
	const struct cfg80211_bss_ies __rcu *beacon_ies;
	const struct cfg80211_bss_ies __rcu *proberesp_ies;

	void (*free_priv)(struct cfg80211_bss *bss);

	s32 signal;

1289 1290 1291
	u16 beacon_interval;
	u16 capability;

1292
	u8 bssid[ETH_ALEN];
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	u8 priv[0] __aligned(sizeof(void *));
1295 1296
};

1297 1298 1299 1300
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
1301 1302 1303
 *
 * Note that the return value is an RCU-protected pointer, so
 * rcu_read_lock() must be held when calling this function.
1304
 * Return: %NULL if not found.
1305 1306 1307 1308
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1309 1310 1311 1312 1313
/**
 * 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.
1316 1317 1318
 * @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
1322 1323 1324
 * @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
1325 1326
 */
struct cfg80211_auth_request {
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	struct cfg80211_bss *bss;
1328 1329
	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;
1333 1334
	const u8 *sae_data;
	size_t sae_data_len;
1335 1336
};

1337 1338 1339 1340 1341 1342 1343 1344 1345
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
};

1346 1347 1348 1349 1350
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1351 1352 1353 1354 1355
 * @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())
1356 1357
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1358
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
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 * @crypto: crypto settings
1360
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
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 * @flags:  See &enum cfg80211_assoc_req_flags
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
 *   will be used in ht_capa.  Un-supported values will be ignored.
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
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 */
struct cfg80211_assoc_request {
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	struct cfg80211_bss *bss;
1368
	const u8 *ie, *prev_bssid;
1369
	size_t ie_len;
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	struct cfg80211_crypto_settings crypto;
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	bool use_mfp;
1372 1373 1374
	u32 flags;
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1375 1376 1377 1378 1379 1380 1381 1382
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
1383
 * @bssid: the BSSID of the BSS to deauthenticate from
1384 1385
 * @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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 */
struct cfg80211_deauth_request {
1389
	const u8 *bssid;
1390 1391
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1393
	bool local_state_change;
1394 1395 1396 1397 1398 1399 1400 1401
};

/**
 * 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
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 * @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
1406 1407
 * @local_state_change: This is a request for a local state only, i.e., no
 *	Disassociation frame is to be transmitted.
1408 1409
 */
struct cfg80211_disassoc_request {
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	struct cfg80211_bss *bss;
1411 1412
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1414
	bool local_state_change;
1415 1416
};

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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.
1427
 * @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
1432
 * @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.
1439
 * @basic_rates: bitmap of basic rates to use when creating the IBSS
1440
 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
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 */
struct cfg80211_ibss_params {
	u8 *ssid;
	u8 *bssid;
1445
	struct cfg80211_chan_def chandef;
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	u8 *ie;
	u8 ssid_len, ie_len;
1448
	u16 beacon_interval;
1449
	u32 basic_rates;
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	bool channel_fixed;
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	bool privacy;
1452
	bool control_port;
1453
	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
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 * @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
1477
 * @flags:  See &enum cfg80211_assoc_req_flags
1478 1479
 * @bg_scan_period:  Background scan period in seconds
 *   or -1 to indicate that default value is to be used.
1480 1481 1482
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
 *   will be used in ht_capa.  Un-supported values will be ignored.
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
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 */
struct cfg80211_connect_params {
	struct ieee80211_channel *channel;
	u8 *bssid;
	u8 *ssid;
	size_t ssid_len;
	enum nl80211_auth_type auth_type;
	u8 *ie;
	size_t ie_len;
	bool privacy;
1493
	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;
1497
	u32 flags;
1498
	int bg_scan_period;
1499 1500
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
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};

1503 1504
/**
 * 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
1510 1511 1512 1513 1514 1515
 */
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,
1516
	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
1517 1518
};

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/*
 * cfg80211_bitrate_mask - masks for bitrate control
 */
struct cfg80211_bitrate_mask {
	struct {
		u32 legacy;
1525
		u8 mcs[IEEE80211_HT_MCS_MASK_LEN];
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	} control[IEEE80211_NUM_BANDS];
};
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/**
 * struct cfg80211_pmksa - PMK Security Association
 *
 * This structure is passed to the set/del_pmksa() method for PMKSA
 * caching.
 *
 * @bssid: The AP's BSSID.
 * @pmkid: The PMK material itself.
 */
struct cfg80211_pmksa {
	u8 *bssid;
	u8 *pmkid;
};
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/**
 * struct cfg80211_wowlan_trig_pkt_pattern - packet pattern
 * @mask: bitmask where to match pattern and where to ignore bytes,
 *	one bit per byte, in same format as nl80211
 * @pattern: bytes to match where bitmask is 1
 * @pattern_len: length of pattern (in bytes)
 *
 * Internal note: @mask and @pattern are allocated in one chunk of
 * memory, free @mask only!
 */
struct cfg80211_wowlan_trig_pkt_pattern {
	u8 *mask, *pattern;
	int pattern_len;
};

/**
 * struct cfg80211_wowlan - Wake on Wireless-LAN support info
 *
 * This structure defines the enabled WoWLAN triggers for the device.
 * @any: wake up on any activity -- special trigger if device continues
 *	operating as normal during suspend
 * @disconnect: wake up if getting disconnected
 * @magic_pkt: wake up on receiving magic packet
 * @patterns: wake up on receiving packet matching a pattern
 * @n_patterns: number of patterns
1567 1568 1569 1570
 * @gtk_rekey_failure: wake up on GTK rekey failure
 * @eap_identity_req: wake up on EAP identity request packet
 * @four_way_handshake: wake up on 4-way handshake
 * @rfkill_release: wake up when rfkill is released
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 */
struct cfg80211_wowlan {
1573 1574 1575
	bool any, disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
	     rfkill_release;
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	struct cfg80211_wowlan_trig_pkt_pattern *patterns;
	int n_patterns;
};

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/**
 * struct cfg80211_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];
};

1592 1593 1594 1595 1596 1597 1598 1599 1600
/**
 * 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.
 *
1601 1602 1603 1604
 * 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
1609 1610 1611
 * @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,
1614
 *	must set the struct wireless_dev's iftype. Beware: You must create
1615
 *	the new netdev in the wiphy's network namespace! Returns the struct
1616 1617
 *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
 *	also set the address member in the wdev.
1618
 *
1619
 * @del_virtual_intf: remove the virtual interface
1620
 *
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 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
1623
 *
1624 1625 1626 1627 1628 1629
 * @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
1630 1631
 *	after it returns. This function should return an error if it is
 *	not possible to retrieve the key, -ENOENT if it doesn't exist.
1632 1633
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
1634
 *	and @key_index, return -ENOENT if the key doesn't exist.
1635 1636
 *
 * @set_default_key: set the default key on an interface
1637
 *
1638 1639
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
1640 1641
 * @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.
1646 1647 1648
 *
 * @add_station: Add a new station.
 * @del_station: Remove a station; @mac may be NULL to remove all stations.
1649 1650 1651 1652 1653 1654
 * @change_station: Modify a given station. Note that flags changes are not much
 *	validated in cfg80211, in particular the auth/assoc/authorized flags
 *	might come to the driver in invalid combinations -- make sure to check
 *	them, also against the existing state! Also, supported_rates changes are
 *	not checked in station mode -- drivers need to reject (or ignore) them
 *	for anything but TDLS peers.
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 * @get_station: get station information for the station identified by @mac
 * @dump_station: dump station callback -- resume dump at index @idx
 *
 * @add_mpath: add a fixed mesh path
 * @del_mpath: delete a given mesh path
 * @change_mpath: change a given mesh path
 * @get_mpath: get a mesh path for the given parameters
 * @dump_mpath: dump mesh path callback -- resume dump at index @idx
1663 1664
 * @join_mesh: join the mesh network with the specified parameters
 * @leave_mesh: leave the current mesh network
1665
 *
1666
 * @get_mesh_config: Get the current mesh configuration
1667
 *
1668
 * @update_mesh_config: Update mesh parameters on a running mesh.
1669 1670 1671
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
1672
 * @change_bss: Modify parameters for a given BSS.
1673 1674
 *
 * @set_txq_params: Set TX queue parameters
1675
 *
1676 1677 1678 1679 1680 1681 1682 1683
 * @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.
1684
 *
1685 1686 1687 1688
 * @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.
1689 1690 1691 1692 1693
 *
 * @auth: Request to authenticate with the specified peer
 * @assoc: Request to (re)associate with the specified peer
 * @deauth: Request to deauthenticate from the specified peer
 * @disassoc: Request to disassociate from the specified peer
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 *
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 * @connect: Connect to the ESS with the specified parameters. When connected,
 *	call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS.
 *	If the connection fails for some reason, call cfg80211_connect_result()
 *	with the status from the AP.
 * @disconnect: Disconnect from the BSS/ESS.
 *
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 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
 *	cfg80211_ibss_joined(), also call that function when changing BSSID due
 *	to a merge.
 * @leave_ibss: Leave the IBSS.
1705
 *
1706 1707 1708
 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
 *	MESH mode)
 *
1709 1710 1711 1712
 * @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.
1713
 *
1714
 * @set_tx_power: set the transmit power according to the parameters,
1715 1716 1717 1718
 *	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.)
1719
 * @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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1724 1725
 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
 *	functions to adjust rfkill hw state
1726
 *
1727 1728
 * @dump_survey: get site survey information.
 *
1729 1730 1731 1732 1733 1734 1735 1736
 * @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.
1737 1738 1739
 * @mgmt_tx: Transmit a management frame.
 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
 *	frame on another channel
1740
 *
1741
 * @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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1751 1752 1753 1754 1755
 * @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.
1756 1757
 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
 *	allows the driver to adjust the dynamic ps timeout value.
1758
 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
1759 1760
 * @set_cqm_txe_config: Configure connection quality monitor TX error
 *	thresholds.
1761
 * @sched_scan_start: Tell the driver to start a scheduled scan.
1762
 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan.
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 *
1764 1765 1766
 * @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.
1767 1768 1769 1770 1771 1772 1773
 *
 * @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).
1774 1775 1776 1777
 *
 * @set_ringparam: Set tx and rx ring sizes.
 *
 * @get_ringparam: Get tx and rx ring current and maximum sizes.
1778 1779 1780
 *
 * @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().
1784 1785
 *
 * @set_noack_map: Set the NoAck Map for the TIDs.
1786 1787 1788 1789 1790 1791 1792 1793 1794 1795
 *
 * @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
1796 1797 1798 1799
 *
 * @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.
1800 1801 1802
 *
 * @start_p2p_device: Start the given P2P device.
 * @stop_p2p_device: Stop the given P2P device.
1803 1804
 */
struct cfg80211_ops {
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	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
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	int	(*resume)(struct wiphy *wiphy);
1807
	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
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1809
	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
1810
						  const char *name,
1811 1812 1813 1814 1815
						  enum nl80211_iftype type,
						  u32 *flags,
						  struct vif_params *params);
	int	(*del_virtual_intf)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
1816 1817
	int	(*change_virtual_intf)(struct wiphy *wiphy,
				       struct net_device *dev,
1818 1819
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
1820 1821

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
1822
			   u8 key_index, bool pairwise, const u8 *mac_addr,
1823 1824
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
1825 1826
			   u8 key_index, bool pairwise, const u8 *mac_addr,
			   void *cookie,
1827 1828
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
1829
			   u8 key_index, bool pairwise, const u8 *mac_addr);
1830 1831
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
1832
				   u8 key_index, bool unicast, bool multicast);
1833 1834 1835
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
1836

1837 1838 1839 1840 1841
	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);
1842 1843 1844 1845 1846 1847 1848 1849


	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);
1850
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
			       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);
1867
	int	(*get_mesh_config)(struct wiphy *wiphy,
1868 1869
				struct net_device *dev,
				struct mesh_config *conf);
1870
	int	(*update_mesh_config)(struct wiphy *wiphy,
1871 1872 1873 1874 1875 1876 1877
				      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);

1878 1879
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
1880

1881
	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
1882
				  struct ieee80211_txq_params *params);
1883

1884 1885 1886 1887 1888
	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
					     struct net_device *dev,
					     struct ieee80211_channel *chan);

	int	(*set_monitor_channel)(struct wiphy *wiphy,
1889
				       struct cfg80211_chan_def *chandef);
1890

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	int	(*scan)(struct wiphy *wiphy,
1892
			struct cfg80211_scan_request *request);
1893 1894 1895 1896 1897 1898

	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,
1899
			  struct cfg80211_deauth_request *req);
1900
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
1901
			    struct cfg80211_disassoc_request *req);
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1903 1904 1905 1906 1907
	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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	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);
1911

1912 1913 1914
	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
				  int rate[IEEE80211_NUM_BANDS]);

1915
	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
1916

1917
	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
1918
				enum nl80211_tx_power_setting type, int mbm);
1919 1920
	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
				int *dbm);
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1921

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1922
	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
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1923
				const u8 *addr);
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1924

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1925
	void	(*rfkill_poll)(struct wiphy *wiphy);
1926 1927 1928

#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);
1932
#endif
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1934 1935 1936 1937 1938
	int	(*set_bitrate_mask)(struct wiphy *wiphy,
				    struct net_device *dev,
				    const u8 *peer,
				    const struct cfg80211_bitrate_mask *mask);

1939 1940 1941
	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
			int idx, struct survey_info *info);

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1942 1943 1944 1945 1946 1947
	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);

1948
	int	(*remain_on_channel)(struct wiphy *wiphy,
1949
				     struct wireless_dev *wdev,
1950 1951 1952 1953
				     struct ieee80211_channel *chan,
				     unsigned int duration,
				     u64 *cookie);
	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
1954
					    struct wireless_dev *wdev,
1955 1956
					    u64 cookie);

1957
	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
1958
			  struct ieee80211_channel *chan, bool offchan,
1959 1960
			  unsigned int wait, const u8 *buf, size_t len,
			  bool no_cck, bool dont_wait_for_ack, u64 *cookie);
1961
	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
1962
				       struct wireless_dev *wdev,
1963
				       u64 cookie);
1964

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1965 1966
	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
				  bool enabled, int timeout);
1967 1968 1969 1970

	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
				       struct net_device *dev,
				       s32 rssi_thold, u32 rssi_hyst);
1971

1972 1973 1974 1975
	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
				      struct net_device *dev,
				      u32 rate, u32 pkts, u32 intvl);

1976
	void	(*mgmt_frame_register)(struct wiphy *wiphy,
1977
				       struct wireless_dev *wdev,
1978
				       u16 frame_type, bool reg);
1979 1980 1981

	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
1982 1983 1984 1985

	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);
1986 1987 1988 1989

	int	(*sched_scan_start)(struct wiphy *wiphy,
				struct net_device *dev,
				struct cfg80211_sched_scan_request *request);
1990
	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
1991 1992 1993

	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_gtk_rekey_data *data);
1994 1995 1996 1997 1998 1999

	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);
2003

2004 2005 2006 2007
	int	(*set_noack_map)(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map);

2008 2009 2010 2011 2012 2013
	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);
2014

2015
	int	(*get_channel)(struct wiphy *wiphy,
2016
			       struct wireless_dev *wdev,
2017
			       struct cfg80211_chan_def *chandef);
2018 2019 2020 2021 2022

	int	(*start_p2p_device)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
	void	(*stop_p2p_device)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2023 2024
};

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2025 2026 2027 2028 2029 2030
/*
 * wireless hardware and networking interfaces structures
 * and registration/helper functions
 */

/**
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2031 2032 2033
 * enum wiphy_flags - wiphy capability flags
 *
 * @WIPHY_FLAG_CUSTOM_REGULATORY:  tells us the driver for this device
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2034 2035 2036 2037
 * 	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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2038 2039
 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will
 *	ignore regulatory domain settings until it gets its own regulatory
2040 2041 2042 2043 2044 2045 2046
 *	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
2047 2048 2049
 *	outside of its regulatory domain. If used in combination with
 *	WIPHY_FLAG_CUSTOM_REGULATORY the inspected country IE power settings
 *	will be followed.
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 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure
 *	that passive scan flags and beaconing flags may not be lifted by
 *	cfg80211 due to regulatory beacon hints. For more information on beacon
2053
 *	hints read the documenation for regulatory_hint_found_beacon()
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 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this
 *	wiphy at all
 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled
 *	by default -- this flag will be set depending on the kernel's default
 *	on wiphy_new(), but can be changed by the driver if it has a good
 *	reason to override the default
2060 2061 2062
 * @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
2063 2064 2065
 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
 *	control port protocol ethertype. The device also honours the
 *	control_port_no_encrypt flag.
2066
 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
2067 2068
 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
 *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
2069
 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
2070 2071
 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
 *	firmware.
2072
 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
2073 2074 2075 2076 2077 2078
 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation.
 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z)
 *	link setup/discovery operations internally. Setup, discovery and
 *	teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT
 *	command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
 *	used for asking the driver/firmware to perform a TDLS operation.
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 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
2080 2081 2082
 * @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().
2083 2084
 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
 *	responds to probe-requests in hardware.
2085 2086
 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
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 */
enum wiphy_flags {
2089 2090 2091 2092 2093 2094 2095 2096
	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),
2097
	WIPHY_FLAG_IBSS_RSN			= BIT(8),
2098
	WIPHY_FLAG_MESH_AUTH			= BIT(10),
2099
	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
2100
	/* use hole at 12 */
2101
	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
2102
	WIPHY_FLAG_AP_UAPSD			= BIT(14),
2103 2104
	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
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	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
2106
	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
2107
	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
2108 2109
	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131
};

/**
 * 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.
2132
 * @radar_detect_widths: bitmap of channel widths supported for radar detection
2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184
 *
 * 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;
2185
	u8 radar_detect_widths;
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};

2188 2189 2190 2191
struct ieee80211_txrx_stypes {
	u16 tx, rx;
};

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/**
 * enum wiphy_wowlan_support_flags - WoWLAN support flags
 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any"
 *	trigger that keeps the device operating as-is and
 *	wakes up the host on any activity, for example a
 *	received packet that passed filtering; note that the
 *	packet should be preserved in that case
 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet
 *	(see nl80211.h)
 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect
2202 2203 2204 2205 2206
 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep
 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure
 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request
 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure
 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release
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 */
enum wiphy_wowlan_support_flags {
2209 2210 2211 2212 2213 2214 2215 2216
	WIPHY_WOWLAN_ANY		= BIT(0),
	WIPHY_WOWLAN_MAGIC_PKT		= BIT(1),
	WIPHY_WOWLAN_DISCONNECT		= BIT(2),
	WIPHY_WOWLAN_SUPPORTS_GTK_REKEY	= BIT(3),
	WIPHY_WOWLAN_GTK_REKEY_FAILURE	= BIT(4),
	WIPHY_WOWLAN_EAP_IDENTITY_REQ	= BIT(5),
	WIPHY_WOWLAN_4WAY_HANDSHAKE	= BIT(6),
	WIPHY_WOWLAN_RFKILL_RELEASE	= BIT(7),
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};

/**
 * struct wiphy_wowlan_support - WoWLAN support data
 * @flags: see &enum wiphy_wowlan_support_flags
 * @n_patterns: number of supported wakeup patterns
 *	(see nl80211.h for the pattern definition)
 * @pattern_max_len: maximum length of each pattern
 * @pattern_min_len: minimum length of each pattern
 */
struct wiphy_wowlan_support {
	u32 flags;
	int n_patterns;
	int pattern_max_len;
	int pattern_min_len;
};

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/**
 * struct wiphy - wireless hardware description
2236 2237 2238
 * @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
2246 2247 2248 2249 2250
 * @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
2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263
 * @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.
2264 2265
 * @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
2269
 * @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
2274 2275 2276 2277 2278
 * @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
2280
 * @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
2285 2286
 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
 *	for in any given scheduled scan
2287 2288 2289
 * @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
2293 2294
 * @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
2302 2303 2304 2305
 *
 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
 *	transmitted through nl80211, points to an array indexed by interface
 *	type
2306
 *
2307 2308 2309 2310 2311 2312 2313
 * @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.
2314
 *
2315 2316 2317 2318 2319
 * @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.
 *
2320 2321
 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
 *	may request, if implemented.
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 *
 * @wowlan: WoWLAN support information
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 *
 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
2326 2327
 * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
 *	If null, then none can be over-ridden.
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 */
struct wiphy {
	/* assign these fields before you register the wiphy */

2332
	/* permanent MAC address(es) */
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	u8 perm_addr[ETH_ALEN];
2334 2335 2336
	u8 addr_mask[ETH_ALEN];

	struct mac_address *addresses;
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2338 2339
	const struct ieee80211_txrx_stypes *mgmt_stypes;

2340 2341 2342 2343
	const struct ieee80211_iface_combination *iface_combinations;
	int n_iface_combinations;
	u16 software_iftypes;

2344 2345
	u16 n_addresses;

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

2349
	u32 flags, features;
2350

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	u32 ap_sme_capa;

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2353 2354 2355 2356
	enum cfg80211_signal_type signal_type;

	int bss_priv_size;
	u8 max_scan_ssids;
2357
	u8 max_sched_scan_ssids;
2358
	u8 max_match_sets;
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	u16 max_scan_ie_len;
2360
	u16 max_sched_scan_ie_len;
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2361 2362 2363 2364

	int n_cipher_suites;
	const u32 *cipher_suites;

2365 2366 2367 2368
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;
2369
	u8 coverage_class;
2370

2371 2372 2373
	char fw_version[ETHTOOL_BUSINFO_LEN];
	u32 hw_version;

2374
#ifdef CONFIG_PM
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	struct wiphy_wowlan_support wowlan;
2376
#endif
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2378 2379
	u16 max_remain_on_channel_duration;

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2380 2381
	u8 max_num_pmkids;

2382 2383
	u32 available_antennas_tx;
	u32 available_antennas_rx;
2384

2385 2386 2387 2388 2389 2390 2391
	/*
	 * Bitmap of supported protocols for probe response offloading
	 * see &enum nl80211_probe_resp_offload_support_attr. Only valid
	 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
	 */
	u32 probe_resp_offload;

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	/* If multiple wiphys are registered and you're handed e.g.
	 * a regular netdev with assigned ieee80211_ptr, you won't
	 * know whether it points to a wiphy your driver has registered
	 * or not. Assign this to something global to your driver to
	 * help determine whether you own this wiphy or not. */
2397
	const void *privid;
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	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
2402 2403
	void (*reg_notifier)(struct wiphy *wiphy,
			     struct regulatory_request *request);
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	/* fields below are read-only, assigned by cfg80211 */

2407
	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;

2413 2414 2415
	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
	bool registered;

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2416 2417 2418
	/* dir in debugfs: ieee80211/<wiphyname> */
	struct dentry *debugfsdir;

2419 2420
	const struct ieee80211_ht_cap *ht_capa_mod_mask;

2421 2422 2423 2424 2425
#ifdef CONFIG_NET_NS
	/* the network namespace this phy lives in currently */
	struct net *_net;
#endif

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#ifdef CONFIG_CFG80211_WEXT
	const struct iw_handler_def *wext;
#endif

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	char priv[0] __aligned(NETDEV_ALIGN);
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2431 2432
};

2433 2434
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
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2435
	return read_pnet(&wiphy->_net);
2436 2437 2438 2439
}

static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
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2440
	write_pnet(&wiphy->_net, net);
2441 2442
}

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/**
 * wiphy_priv - return priv from wiphy
 *
 * @wiphy: the wiphy whose priv pointer to return
2447
 * Return: The priv of @wiphy.
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 */
static inline void *wiphy_priv(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return &wiphy->priv;
}

2455 2456 2457 2458
/**
 * priv_to_wiphy - return the wiphy containing the priv
 *
 * @priv: a pointer previously returned by wiphy_priv
2459
 * Return: The wiphy of @priv.
2460 2461 2462 2463 2464 2465 2466
 */
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
2482
 * 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
2493
 * Return: The name of @wiphy.
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 */
2495
static inline const char *wiphy_name(const struct wiphy *wiphy)
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{
	return dev_name(&wiphy->dev);
}

/**
 * wiphy_new - create a new wiphy for use with cfg80211
 *
 * @ops: The configuration operations for this device
 * @sizeof_priv: The size of the private area to allocate
 *
 * Create a new wiphy and associate the given operations with it.
 * @sizeof_priv bytes are allocated for private use.
 *
2509 2510
 * 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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 */
2512
struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv);
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/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
2519
 * 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 */
2542
struct cfg80211_conn;
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2543
struct cfg80211_internal_bss;
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struct cfg80211_cached_keys;
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2545

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/**
2547
 * struct wireless_dev - wireless device state
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 *
2549 2550 2551 2552 2553 2554 2555 2556 2557 2558
 * 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
2563 2564 2565
 * @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
2567
 * @channel: (private) Used by the internal configuration code to track
2568 2569 2570 2571
 *	the user-set AP, monitor and WDS channel
 * @preset_chan: (private) Used by the internal configuration code to
 *	track the channel to be used for AP later
 * @preset_chantype: (private) the corresponding channel type
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 * @bssid: (private) Used by the internal configuration code
 * @ssid: (private) Used by the internal configuration code
 * @ssid_len: (private) Used by the internal configuration code
2575 2576
 * @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
2578 2579 2580 2581
 * @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
2582 2583
 * @mgmt_registrations: list of registrations for management frames
 * @mgmt_registrations_lock: lock for the list
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 * @mtx: mutex used to lock data in this struct
 * @cleanup_work: work struct used for cleanup that can't be done directly
2586 2587
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
2588 2589
 * @address: The address for this device, valid only if @netdev is %NULL
 * @p2p_started: true if this is a P2P Device that has been started
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 */
struct wireless_dev {
	struct wiphy *wiphy;
	enum nl80211_iftype iftype;

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

2599 2600
	u32 identifier;

2601 2602
	struct list_head mgmt_registrations;
	spinlock_t mgmt_registrations_lock;
2603

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	struct mutex mtx;

2606 2607
	struct work_struct cleanup_work;

2608 2609 2610
	bool use_4addr, p2p_started;

	u8 address[ETH_ALEN] __aligned(sizeof(u16));
2611

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	/* currently used for IBSS and SME - might be rearranged later */
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	u8 ssid[IEEE80211_MAX_SSID_LEN];
2614
	u8 ssid_len, mesh_id_len, mesh_id_up_len;
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	enum {
		CFG80211_SME_IDLE,
2617
		CFG80211_SME_CONNECTING,
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		CFG80211_SME_CONNECTED,
	} sme_state;
2620
	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 */
2627
	struct cfg80211_chan_def preset_chandef;
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2629 2630 2631
	/* for AP and mesh channel tracking */
	struct ieee80211_channel *channel;

2632 2633
	bool ibss_fixed;

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	bool ps;
	int ps_timeout;

2637 2638
	int beacon_interval;

2639
	u32 ap_unexpected_nlportid;
2640

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#ifdef CONFIG_CFG80211_WEXT
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	/* wext data */
2643
	struct {
2644 2645
		struct cfg80211_ibss_params ibss;
		struct cfg80211_connect_params connect;
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		struct cfg80211_cached_keys *keys;
2647 2648
		u8 *ie;
		size_t ie_len;
2649
		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
2650
		u8 ssid[IEEE80211_MAX_SSID_LEN];
2651
		s8 default_key, default_mgmt_key;
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		bool prev_bssid_valid;
2653
	} wext;
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#endif
};

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

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/**
 * wdev_priv - return wiphy priv from wireless_dev
 *
 * @wdev: The wireless device whose wiphy's priv pointer to return
2668
 * 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
2685
 * @band: band, necessary due to channel number overlap
2686
 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
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 */
2688
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
2693
 * 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
2710
 * 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
 *
2725 2726 2727 2728
 * Return: The basic rate corresponding to a given bitrate, that
 * is the next lower bitrate contained in the basic rate map,
 * which is, for this function, given as a bitmap of indices of
 * rates in the band's bitrate table.
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 */
struct ieee80211_rate *
ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
			    u32 basic_rates, int bitrate);

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

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struct radiotap_align_size {
	uint8_t align:4, size:4;
};

struct ieee80211_radiotap_namespace {
	const struct radiotap_align_size *align_size;
	int n_bits;
	uint32_t oui;
	uint8_t subns;
};

struct ieee80211_radiotap_vendor_namespaces {
	const struct ieee80211_radiotap_namespace *ns;
	int n_ns;
};

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/**
 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
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 * @this_arg_index: index of current arg, valid after each successful call
 *	to ieee80211_radiotap_iterator_next()
 * @this_arg: pointer to current radiotap arg; it is valid after each
 *	call to ieee80211_radiotap_iterator_next() but also after
 *	ieee80211_radiotap_iterator_init() where it will point to
 *	the beginning of the actual data portion
 * @this_arg_size: length of the current arg, for convenience
 * @current_namespace: pointer to the current namespace definition
 *	(or internally %NULL if the current namespace is unknown)
 * @is_radiotap_ns: indicates whether the current namespace is the default
 *	radiotap namespace or not
 *
 * @_rtheader: pointer to the radiotap header we are walking through
 * @_max_length: length of radiotap header in cpu byte ordering
 * @_arg_index: next argument index
 * @_arg: next argument pointer
 * @_next_bitmap: internal pointer to next present u32
 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
 * @_vns: vendor namespace definitions
 * @_next_ns_data: beginning of the next namespace's data
 * @_reset_on_ext: internal; reset the arg index to 0 when going to the
 *	next bitmap word
 *
 * Describes the radiotap parser state. Fields prefixed with an underscore
 * must not be used by users of the parser, only by the parser internally.
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 */

struct ieee80211_radiotap_iterator {
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	struct ieee80211_radiotap_header *_rtheader;
	const struct ieee80211_radiotap_vendor_namespaces *_vns;
	const struct ieee80211_radiotap_namespace *current_namespace;

	unsigned char *_arg, *_next_ns_data;
2792
	__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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2815 2816 2817 2818 2819 2820
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
 *
2821 2822
 * @skb: the frame
 *
2823
 * Given an skb with a raw 802.11 header at the data pointer this function
2824
 * returns the 802.11 header length.
2825
 *
2826 2827 2828
 * 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.
2829 2830 2831 2832 2833 2834
 */
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
2835
 * Return: The header length in bytes.
2836
 */
2837
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
2838

2839 2840 2841 2842
/**
 * ieee80211_get_mesh_hdrlen - get mesh extension header length
 * @meshhdr: the mesh extension header, only the flags field
 *	(first byte) will be accessed
2843
 * Return: The length of the extension header, which is always at
2844 2845 2846 2847
 * 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.
 */

2856 2857 2858 2859 2860
/**
 * 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
2861
 * Return: 0 on success. Non-zero on error.
2862
 */
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int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
2864 2865 2866 2867 2868 2869 2870 2871 2872
			   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
2873
 * Return: 0 on success, or a negative error code.
2874
 */
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int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
2876 2877
			     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.
2891
 * @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,
2895 2896
			      const unsigned int extra_headroom,
			      bool has_80211_header);
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2898 2899 2900
/**
 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
 * @skb: the data frame
2901
 * Return: The 802.1p/1d tag.
2902 2903 2904
 */
unsigned int cfg80211_classify8021d(struct sk_buff *skb);

2905 2906 2907 2908 2909 2910 2911
/**
 * cfg80211_find_ie - find information element in data
 *
 * @eid: element ID
 * @ies: data consisting of IEs
 * @len: length of data
 *
2912 2913 2914 2915 2916 2917 2918
 * 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.
2919 2920 2921
 */
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);

2922 2923 2924 2925 2926 2927 2928 2929
/**
 * 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
 *
2930 2931 2932 2933 2934 2935 2936
 * 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.
2937 2938 2939 2940
 */
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.
2969 2970
 *
 * 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.
 *
3000 3001 3002 3003 3004 3005 3006
 * 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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 */
3008 3009
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
					       u32 center_freq);
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/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

3016 3017 3018 3019 3020 3021 3022 3023 3024
/**
 * 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);

3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042
/**
 * 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);

3043
/**
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 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame
3045 3046
 *
 * @wiphy: the wiphy reporting the BSS
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 * @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
3051 3052 3053 3054
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
3055
 *
3056 3057
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
3058
 */
3059
struct cfg80211_bss * __must_check
3060 3061 3062
cfg80211_inform_bss_frame(struct wiphy *wiphy,
			  struct ieee80211_channel *channel,
			  struct ieee80211_mgmt *mgmt, size_t len,
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			  s32 signal, gfp_t gfp);
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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
3071
 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
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Johannes Berg 已提交
3072 3073 3074 3075 3076 3077 3078 3079 3080
 * @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.
3081
 *
3082 3083
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
J
Johannes Berg 已提交
3084
 */
3085
struct cfg80211_bss * __must_check
3086 3087
cfg80211_inform_bss(struct wiphy *wiphy,
		    struct ieee80211_channel *channel,
3088 3089
		    const u8 *bssid, u64 tsf, u16 capability,
		    u16 beacon_interval, const u8 *ie, size_t ielen,
3090 3091
		    s32 signal, gfp_t gfp);

3092 3093 3094
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105
				      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);
}

3106 3107 3108 3109
struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
				       struct ieee80211_channel *channel,
				       const u8 *meshid, size_t meshidlen,
				       const u8 *meshcfg);
3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123
/**
 * cfg80211_ref_bss - reference BSS struct
 * @bss: the BSS struct to reference
 *
 * Increments the refcount of the given BSS struct.
 */
void cfg80211_ref_bss(struct cfg80211_bss *bss);

/**
 * cfg80211_put_bss - unref BSS struct
 * @bss: the BSS struct
 *
 * Decrements the refcount of the given BSS struct.
 */
3124
void cfg80211_put_bss(struct cfg80211_bss *bss);
J
Johannes Berg 已提交
3125

3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136
/**
 * cfg80211_unlink_bss - unlink BSS from internal data structures
 * @wiphy: the wiphy
 * @bss: the bss to remove
 *
 * This function removes the given BSS from the internal data structures
 * thereby making it no longer show up in scan results etc. Use this
 * function when you detect a BSS is gone. Normally BSSes will also time
 * out, so it is not necessary to use this function at all.
 */
void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
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Johannes Berg 已提交
3137

3138 3139 3140 3141 3142 3143 3144
/**
 * cfg80211_send_rx_auth - notification of processed authentication
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever an authentication has been processed in
3145 3146
 * station mode. The driver is required to call either this function or
 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth()
3147
 * call. This function may sleep.
3148
 */
3149
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
3150

3151 3152 3153 3154
/**
 * cfg80211_send_auth_timeout - notification of timed out authentication
 * @dev: network device
 * @addr: The MAC address of the device with which the authentication timed out
3155 3156
 *
 * This function may sleep.
3157
 */
3158
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
3159

3160 3161 3162
/**
 * cfg80211_send_rx_assoc - notification of processed association
 * @dev: network device
3163 3164
 * @bss: the BSS struct association was requested for, the struct reference
 *	is owned by cfg80211 after this call
3165 3166 3167 3168
 * @buf: (re)association response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a (re)association response has been
3169 3170
 * processed in station mode. The driver is required to call either this
 * function or cfg80211_send_assoc_timeout() to indicate the result of
3171
 * cfg80211_ops::assoc() call. This function may sleep.
3172
 */
3173 3174
void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
			    const u8 *buf, size_t len);
3175

3176 3177 3178 3179
/**
 * cfg80211_send_assoc_timeout - notification of timed out association
 * @dev: network device
 * @addr: The MAC address of the device with which the association timed out
3180 3181
 *
 * This function may sleep.
3182
 */
3183
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
3184

3185
/**
3186
 * cfg80211_send_deauth - notification of processed deauthentication
3187 3188 3189 3190 3191
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
3192
 * station mode. This includes both received deauthentication frames and
3193
 * locally generated ones. This function may sleep.
3194
 */
3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);

/**
 * __cfg80211_send_deauth - notification of processed deauthentication
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * Like cfg80211_send_deauth(), but doesn't take the wdev lock.
 */
void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
3206 3207

/**
3208
 * cfg80211_send_disassoc - notification of processed disassociation
3209 3210 3211 3212 3213
 * @dev: network device
 * @buf: disassociation response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever disassociation has been processed in
3214
 * station mode. This includes both received disassociation frames and locally
3215
 * generated ones. This function may sleep.
3216
 */
3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);

/**
 * __cfg80211_send_disassoc - notification of processed disassociation
 * @dev: network device
 * @buf: disassociation response frame (header + body)
 * @len: length of the frame data
 *
 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock.
 */
void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf,
	size_t len);
3229

3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255
/**
 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a received Deauthentication frame has been
 * dropped in station mode because of MFP being used but the Deauthentication
 * frame was not protected. This function may sleep.
 */
void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
				 size_t len);

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

3256 3257 3258 3259 3260
/**
 * 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
3261
 * @key_id: Key identifier (0..3). Can be -1 if missing.
3262
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
3263
 * @gfp: allocation flags
3264 3265 3266 3267 3268 3269 3270
 *
 * 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,
3271
				  const u8 *tsc, gfp_t gfp);
3272

J
Johannes Berg 已提交
3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288
/**
 * 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);

3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304
/**
 * 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
3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318
/**
 * 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
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337
/**
 * 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);

3338
#ifdef CONFIG_NL80211_TESTMODE
J
Johannes Berg 已提交
3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349
/**
 * 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.
 */

3350 3351 3352 3353 3354 3355 3356 3357 3358 3359
/**
 * 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.
 *
3360 3361 3362 3363 3364 3365 3366
 * 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.
3367 3368 3369
 *
 * When done, call cfg80211_testmode_reply() with the skb and return
 * its error code as the result of the @testmode_cmd operation.
3370 3371
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3372 3373 3374 3375 3376 3377 3378 3379 3380
 */
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()
 *
3381 3382 3383 3384 3385 3386
 * 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.
3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399
 */
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.
 *
3400 3401 3402 3403 3404
 * 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.
3405 3406 3407
 *
 * When done filling the skb, call cfg80211_testmode_event() with the
 * skb to send the event.
3408 3409
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426
 */
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
3427
#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
3428 3429
#else
#define CFG80211_TESTMODE_CMD(cmd)
W
Wey-Yi Guy 已提交
3430
#define CFG80211_TESTMODE_DUMP(cmd)
3431 3432
#endif

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Samuel Ortiz 已提交
3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458
/**
 * 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
3459
 * @channel: the channel of the new AP
S
Samuel Ortiz 已提交
3460 3461 3462 3463 3464 3465 3466 3467 3468 3469
 * @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.
 */
3470 3471 3472
void cfg80211_roamed(struct net_device *dev,
		     struct ieee80211_channel *channel,
		     const u8 *bssid,
S
Samuel Ortiz 已提交
3473 3474 3475
		     const u8 *req_ie, size_t req_ie_len,
		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501
/**
 * 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
3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516
/**
 * 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);

3517 3518
/**
 * cfg80211_ready_on_channel - notification of remain_on_channel start
3519
 * @wdev: wireless device
3520 3521 3522 3523 3524 3525
 * @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
 */
3526
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
3527 3528 3529 3530 3531
			       struct ieee80211_channel *chan,
			       unsigned int duration, gfp_t gfp);

/**
 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
3532
 * @wdev: wireless device
3533 3534 3535 3536
 * @cookie: the request cookie
 * @chan: The current channel (from remain_on_channel request)
 * @gfp: allocation flags
 */
3537
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
3538 3539
					struct ieee80211_channel *chan,
					gfp_t gfp);
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Samuel Ortiz 已提交
3540

3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552

/**
 * 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);

3553 3554 3555 3556 3557 3558 3559 3560 3561
/**
 * 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);

3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580
/**
 * 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);

3581
/**
3582
 * cfg80211_rx_mgmt - notification of received, unprocessed management frame
3583
 * @wdev: wireless device receiving the frame
3584
 * @freq: Frequency on which the frame was received in MHz
3585
 * @sig_dbm: signal strength in mBm, or 0 if unknown
3586
 * @buf: Management frame (header + body)
3587 3588
 * @len: length of the frame data
 * @gfp: context flags
3589
 *
3590 3591 3592 3593
 * 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.
3594 3595 3596
 * 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.
3597
 */
3598
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
3599
		      const u8 *buf, size_t len, gfp_t gfp);
3600 3601

/**
3602
 * cfg80211_mgmt_tx_status - notification of TX status for management frame
3603
 * @wdev: wireless device receiving the frame
3604 3605
 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
 * @buf: Management frame (header + body)
3606 3607 3608 3609
 * @len: length of the frame data
 * @ack: Whether frame was acknowledged
 * @gfp: context flags
 *
3610 3611
 * 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
3612 3613
 * transmission attempt.
 */
3614
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
3615
			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
3616

3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630

/**
 * 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);

3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642
/**
 * 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);

3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657
/**
 * 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);

3658 3659 3660 3661 3662
/**
 * 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
3663
 * @gfp: allocation flags
3664 3665 3666 3667
 */
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
			       const u8 *replay_ctr, gfp_t gfp);

3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678
/**
 * 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);

3679 3680 3681 3682 3683 3684 3685 3686 3687
/**
 * 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.
3688
 * Return: %true if the frame was passed to userspace (or this failed
3689 3690 3691 3692 3693
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_spurious_frame(struct net_device *dev,
				const u8 *addr, gfp_t gfp);

3694 3695 3696 3697 3698 3699 3700 3701 3702 3703
/**
 * 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.
3704
 * Return: %true if the frame was passed to userspace (or this failed
3705 3706 3707 3708 3709
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
					const u8 *addr, gfp_t gfp);

J
Johannes Berg 已提交
3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720
/**
 * 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);

3721 3722 3723 3724 3725 3726
/**
 * 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
3727
 * @sig_dbm: signal strength in mBm, or 0 if unknown
3728 3729 3730 3731 3732 3733 3734
 *
 * 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,
3735
				 int freq, int sig_dbm);
3736

3737
/**
3738
 * cfg80211_reg_can_beacon - check if beaconing is allowed
3739
 * @wiphy: the wiphy
3740
 * @chandef: the channel definition
3741
 *
3742 3743
 * 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.)
3744
 */
3745 3746
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
			     struct cfg80211_chan_def *chandef);
3747

3748 3749 3750
/*
 * cfg80211_ch_switch_notify - update wdev channel and notify userspace
 * @dev: the device which switched channels
3751
 * @chandef: the new channel definition
3752 3753 3754
 *
 * Acquires wdev_lock, so must only be called from sleepable driver context!
 */
3755 3756
void cfg80211_ch_switch_notify(struct net_device *dev,
			       struct cfg80211_chan_def *chandef);
3757

3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776
/*
 * 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);

3777 3778 3779 3780 3781 3782
/*
 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
 * @rate: given rate_info to calculate bitrate from
 *
 * return 0 if MCS index >= 32
 */
3783
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
3784

3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800
/**
 * 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);

3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812
/**
 * 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.
 *
3813 3814 3815
 * 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).
3816
 */
3817 3818 3819
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
			  enum ieee80211_p2p_attr_id attr,
			  u8 *buf, unsigned int bufsize);
3820

3821 3822 3823 3824 3825
/* Logging, debugging and troubleshooting/diagnostic helpers. */

/* wiphy_printk helpers, similar to dev_printk */

#define wiphy_printk(level, wiphy, format, args...)		\
3826
	dev_printk(level, &(wiphy)->dev, format, ##args)
3827
#define wiphy_emerg(wiphy, format, args...)			\
3828
	dev_emerg(&(wiphy)->dev, format, ##args)
3829
#define wiphy_alert(wiphy, format, args...)			\
3830
	dev_alert(&(wiphy)->dev, format, ##args)
3831
#define wiphy_crit(wiphy, format, args...)			\
3832
	dev_crit(&(wiphy)->dev, format, ##args)
3833
#define wiphy_err(wiphy, format, args...)			\
3834
	dev_err(&(wiphy)->dev, format, ##args)
3835
#define wiphy_warn(wiphy, format, args...)			\
3836
	dev_warn(&(wiphy)->dev, format, ##args)
3837
#define wiphy_notice(wiphy, format, args...)			\
3838
	dev_notice(&(wiphy)->dev, format, ##args)
3839
#define wiphy_info(wiphy, format, args...)			\
3840
	dev_info(&(wiphy)->dev, format, ##args)
3841

3842
#define wiphy_debug(wiphy, format, args...)			\
3843
	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
3844

3845
#define wiphy_dbg(wiphy, format, args...)			\
3846
	dev_dbg(&(wiphy)->dev, format, ##args)
3847 3848 3849 3850 3851 3852 3853 3854

#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);	\
3855
	0;								\
3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866
})
#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);

3867
#endif /* __NET_CFG80211_H */