cfg80211.h 183.3 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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 * Copyright 2013-2014 Intel Mobile Communications GmbH
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
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#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
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#include <linux/bug.h>
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#include <linux/netlink.h>
#include <linux/skbuff.h>
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#include <linux/nl80211.h>
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#include <linux/if_ether.h>
#include <linux/ieee80211.h>
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#include <linux/net.h>
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#include <net/regulatory.h>

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


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

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struct wiphy;

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/*
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 * wireless hardware capability structures
 */

/**
 * enum ieee80211_band - supported frequency bands
 *
 * The bands are assigned this way because the supported
 * bitrates differ in these bands.
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 *
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 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
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 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz)
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 * @IEEE80211_NUM_BANDS: number of defined bands
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 */
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enum ieee80211_band {
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	IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
	IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
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	IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ,
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	/* keep last */
	IEEE80211_NUM_BANDS
};
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/**
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 * enum ieee80211_channel_flags - channel flags
 *
 * Channel flags set by the regulatory control code.
 *
 * @IEEE80211_CHAN_DISABLED: This channel is disabled.
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 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes
 * 	sending probe requests or beaconing.
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 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
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 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
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 * 	is not permitted.
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 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
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 * 	is not permitted.
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 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
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 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
 *	this flag indicates that an 80 MHz channel cannot use this
 *	channel as the control or any of the secondary channels.
 *	This may be due to the driver or due to regulatory bandwidth
 *	restrictions.
 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
 *	this flag indicates that an 160 MHz channel cannot use this
 *	channel as the control or any of the secondary channels.
 *	This may be due to the driver or due to regulatory bandwidth
 *	restrictions.
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 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
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 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT
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 * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted
 *	on this channel.
 * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
 *	on this channel.
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 *
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 */
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enum ieee80211_channel_flags {
	IEEE80211_CHAN_DISABLED		= 1<<0,
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	IEEE80211_CHAN_NO_IR		= 1<<1,
	/* hole at 1<<2 */
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	IEEE80211_CHAN_RADAR		= 1<<3,
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	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
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	IEEE80211_CHAN_NO_OFDM		= 1<<6,
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	IEEE80211_CHAN_NO_80MHZ		= 1<<7,
	IEEE80211_CHAN_NO_160MHZ	= 1<<8,
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	IEEE80211_CHAN_INDOOR_ONLY	= 1<<9,
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	IEEE80211_CHAN_IR_CONCURRENT	= 1<<10,
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	IEEE80211_CHAN_NO_20MHZ		= 1<<11,
	IEEE80211_CHAN_NO_10MHZ		= 1<<12,
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};

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#define IEEE80211_CHAN_NO_HT40 \
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	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
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#define IEEE80211_DFS_MIN_CAC_TIME_MS		60000
#define IEEE80211_DFS_MIN_NOP_TIME_MS		(30 * 60 * 1000)

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/**
 * struct ieee80211_channel - channel definition
 *
 * This structure describes a single channel for use
 * with cfg80211.
 *
 * @center_freq: center frequency in MHz
 * @hw_value: hardware-specific value for the channel
 * @flags: channel flags from &enum ieee80211_channel_flags.
 * @orig_flags: channel flags at registration time, used by regulatory
 *	code to support devices with additional restrictions
 * @band: band this channel belongs to.
 * @max_antenna_gain: maximum antenna gain in dBi
 * @max_power: maximum transmission power (in dBm)
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 * @max_reg_power: maximum regulatory transmission power (in dBm)
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 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
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 *	to enable this, this is useful only on 5 GHz band.
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 * @orig_mag: internal use
 * @orig_mpwr: internal use
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 * @dfs_state: current state of this channel. Only relevant if radar is required
 *	on this channel.
 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered.
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 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels.
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 */
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struct ieee80211_channel {
	enum ieee80211_band band;
	u16 center_freq;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
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	int max_reg_power;
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	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
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	enum nl80211_dfs_state dfs_state;
	unsigned long dfs_state_entered;
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	unsigned int dfs_cac_ms;
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};

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/**
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 * enum ieee80211_rate_flags - rate flags
 *
 * Hardware/specification flags for rates. These are structured
 * in a way that allows using the same bitrate structure for
 * different bands/PHY modes.
 *
 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
 *	preamble on this bitrate; only relevant in 2.4GHz band and
 *	with CCK rates.
 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
 *	when used with 802.11a (on the 5 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
 *	when used with 802.11b (on the 2.4 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
 *	when used with 802.11g (on the 2.4 GHz band); filled by the
 *	core code when registering the wiphy.
 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
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 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode
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 */
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enum ieee80211_rate_flags {
	IEEE80211_RATE_SHORT_PREAMBLE	= 1<<0,
	IEEE80211_RATE_MANDATORY_A	= 1<<1,
	IEEE80211_RATE_MANDATORY_B	= 1<<2,
	IEEE80211_RATE_MANDATORY_G	= 1<<3,
	IEEE80211_RATE_ERP_G		= 1<<4,
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	IEEE80211_RATE_SUPPORTS_5MHZ	= 1<<5,
	IEEE80211_RATE_SUPPORTS_10MHZ	= 1<<6,
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};
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/**
 * enum ieee80211_bss_type - BSS type filter
 *
 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS
 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS
 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
 */
enum ieee80211_bss_type {
	IEEE80211_BSS_TYPE_ESS,
	IEEE80211_BSS_TYPE_PBSS,
	IEEE80211_BSS_TYPE_IBSS,
	IEEE80211_BSS_TYPE_MBSS,
	IEEE80211_BSS_TYPE_ANY
};

/**
 * enum ieee80211_privacy - BSS privacy filter
 *
 * @IEEE80211_PRIVACY_ON: privacy bit set
 * @IEEE80211_PRIVACY_OFF: privacy bit clear
 * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting
 */
enum ieee80211_privacy {
	IEEE80211_PRIVACY_ON,
	IEEE80211_PRIVACY_OFF,
	IEEE80211_PRIVACY_ANY
};

#define IEEE80211_PRIVACY(x)	\
	((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF)

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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.
 *	If this parameter is set to zero address the driver may
 *	determine the address as needed.
 *	This feature is only fully supported by drivers that enable the
 *	%NL80211_FEATURE_MAC_ON_CREATE flag.  Others may support creating
 **	only p2p devices with specified MAC.
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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 {
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	const u8 *key;
	const u8 *seq;
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	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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/**
 * cfg80211_chandef_dfs_required - checks if radar detection is required
 * @wiphy: the wiphy to validate against
 * @chandef: the channel definition to check
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 * @iftype: the interface type as specified in &enum nl80211_iftype
 * Returns:
 *	1 if radar detection is required, 0 if it is not, < 0 on error
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 */
int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
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				  const struct cfg80211_chan_def *chandef,
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				  enum nl80211_iftype iftype);
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/**
 * ieee80211_chandef_rate_flags - returns rate flags for a channel
 *
 * In some channel types, not all rates may be used - for example CCK
 * rates may not be used in 5/10 MHz channels.
 *
 * @chandef: channel definition for the channel
 *
 * Returns: rate flags which apply for this channel
 */
static inline enum ieee80211_rate_flags
ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_5:
		return IEEE80211_RATE_SUPPORTS_5MHZ;
	case NL80211_CHAN_WIDTH_10:
		return IEEE80211_RATE_SUPPORTS_10MHZ;
	default:
		break;
	}
	return 0;
}

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/**
 * ieee80211_chandef_max_power - maximum transmission power for the chandef
 *
 * In some regulations, the transmit power may depend on the configured channel
 * bandwidth which may be defined as dBm/MHz. This function returns the actual
 * max_power for non-standard (20 MHz) channels.
 *
 * @chandef: channel definition for the channel
 *
 * Returns: maximum allowed transmission power in dBm for the chandef
 */
static inline int
ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_5:
		return min(chandef->chan->max_reg_power - 6,
			   chandef->chan->max_power);
	case NL80211_CHAN_WIDTH_10:
		return min(chandef->chan->max_reg_power - 3,
			   chandef->chan->max_power);
	default:
		break;
	}
	return chandef->chan->max_power;
}

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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_TIME: active time (in ms) was filled in
 * @SURVEY_INFO_TIME_BUSY: busy time was filled in
 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in
 * @SURVEY_INFO_TIME_RX: receive time was filled in
 * @SURVEY_INFO_TIME_TX: transmit time was filled in
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 * @SURVEY_INFO_TIME_SCAN: scan 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 {
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	SURVEY_INFO_NOISE_DBM		= BIT(0),
	SURVEY_INFO_IN_USE		= BIT(1),
	SURVEY_INFO_TIME		= BIT(2),
	SURVEY_INFO_TIME_BUSY		= BIT(3),
	SURVEY_INFO_TIME_EXT_BUSY	= BIT(4),
	SURVEY_INFO_TIME_RX		= BIT(5),
	SURVEY_INFO_TIME_TX		= BIT(6),
574
	SURVEY_INFO_TIME_SCAN		= BIT(7),
575 576 577 578 579
};

/**
 * struct survey_info - channel survey response
 *
580 581
 * @channel: the channel this survey record reports, may be %NULL for a single
 *	record to report global statistics
582 583
 * @filled: bitflag of flags from &enum survey_info_flags
 * @noise: channel noise in dBm. This and all following fields are
584
 *	optional
585 586 587 588 589
 * @time: amount of time in ms the radio was turn on (on the channel)
 * @time_busy: amount of time the primary channel was sensed busy
 * @time_ext_busy: amount of time the extension channel was sensed busy
 * @time_rx: amount of time the radio spent receiving data
 * @time_tx: amount of time the radio spent transmitting data
590
 * @time_scan: amount of time the radio spent for scanning
591
 *
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 * Used by dump_survey() to report back per-channel survey information.
 *
594 595 596 597 598
 * This structure can later be expanded with things like
 * channel duty cycle etc.
 */
struct survey_info {
	struct ieee80211_channel *channel;
599 600 601 602 603
	u64 time;
	u64 time_busy;
	u64 time_ext_busy;
	u64 time_rx;
	u64 time_tx;
604
	u64 time_scan;
605 606 607 608
	u32 filled;
	s8 noise;
};

609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638
/**
 * 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;
};

639
/**
640
 * struct cfg80211_beacon_data - beacon data
641
 * @head: head portion of beacon (before TIM IE)
642
 *	or %NULL if not changed
643
 * @tail: tail portion of beacon (after TIM IE)
644
 *	or %NULL if not changed
645 646
 * @head_len: length of @head
 * @tail_len: length of @tail
647 648 649 650 651 652 653 654
 * @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
655 656
 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
657
 */
658 659 660 661 662 663 664 665 666 667 668 669 670 671
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;
};

672 673 674 675
struct mac_address {
	u8 addr[ETH_ALEN];
};

676 677 678 679
/**
 * struct cfg80211_acl_data - Access control list data
 *
 * @acl_policy: ACL policy to be applied on the station's
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 *	entry specified by mac_addr
681 682 683 684 685 686 687 688 689 690 691
 * @n_acl_entries: Number of MAC address entries passed
 * @mac_addrs: List of MAC addresses of stations to be used for ACL
 */
struct cfg80211_acl_data {
	enum nl80211_acl_policy acl_policy;
	int n_acl_entries;

	/* Keep it last */
	struct mac_address mac_addrs[];
};

692 693 694 695 696
/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
697
 * @chandef: defines the channel to use
698 699 700 701 702 703 704 705 706 707
 * @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)
708
 * @smps_mode: SMPS mode
709
 * @inactivity_timeout: time in seconds to determine station's inactivity.
710 711
 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
712 713
 * @acl: ACL configuration used by the drivers which has support for
 *	MAC address based access control
714 715
 */
struct cfg80211_ap_settings {
716
	struct cfg80211_chan_def chandef;
717

718 719 720
	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
721 722 723
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
724 725 726
	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
727
	enum nl80211_smps_mode smps_mode;
728
	int inactivity_timeout;
729 730
	u8 p2p_ctwindow;
	bool p2p_opp_ps;
731
	const struct cfg80211_acl_data *acl;
732 733
};

734 735 736 737 738 739 740
/**
 * struct cfg80211_csa_settings - channel switch settings
 *
 * Used for channel switch
 *
 * @chandef: defines the channel to use after the switch
 * @beacon_csa: beacon data while performing the switch
741 742 743 744
 * @counter_offsets_beacon: offsets of the counters within the beacon (tail)
 * @counter_offsets_presp: offsets of the counters within the probe response
 * @n_counter_offsets_beacon: number of csa counters the beacon (tail)
 * @n_counter_offsets_presp: number of csa counters in the probe response
745 746 747 748 749 750 751 752
 * @beacon_after: beacon data to be used on the new channel
 * @radar_required: whether radar detection is required on the new channel
 * @block_tx: whether transmissions should be blocked while changing
 * @count: number of beacons until switch
 */
struct cfg80211_csa_settings {
	struct cfg80211_chan_def chandef;
	struct cfg80211_beacon_data beacon_csa;
753 754 755 756
	const u16 *counter_offsets_beacon;
	const u16 *counter_offsets_presp;
	unsigned int n_counter_offsets_beacon;
	unsigned int n_counter_offsets_presp;
757 758 759 760 761 762
	struct cfg80211_beacon_data beacon_after;
	bool radar_required;
	bool block_tx;
	u8 count;
};

763 764 765
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
766
 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
767
 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
768 769 770 771 772 773
 *
 * 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),
774
	STATION_PARAM_APPLY_CAPABILITY = BIT(1),
775
	STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
776 777
};

778 779 780 781 782 783 784 785 786
/**
 * 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
787 788 789 790
 * @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_...))
791 792
 * @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
794
 * @plink_state: set the peer link state for a station
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 * @ht_capa: HT capabilities of station
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Mahesh Palivela 已提交
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 * @vht_capa: VHT capabilities of station
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 * @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
804 805
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
806 807 808
 * @capability: station capability
 * @ext_capab: extended capabilities of the station
 * @ext_capab_len: number of extended capabilities
809 810 811 812
 * @supported_channels: supported channels in IEEE 802.11 format
 * @supported_channels_len: number of supported channels
 * @supported_oper_classes: supported oper classes in IEEE 802.11 format
 * @supported_oper_classes_len: number of supported operating classes
813 814
 * @opmode_notif: operating mode field from Operating Mode Notification
 * @opmode_notif_used: information if operating mode field is used
815 816
 */
struct station_parameters {
817
	const u8 *supported_rates;
818
	struct net_device *vlan;
819
	u32 sta_flags_mask, sta_flags_set;
820
	u32 sta_modify_mask;
821 822 823
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
824
	u8 plink_action;
825
	u8 plink_state;
826 827
	const struct ieee80211_ht_cap *ht_capa;
	const struct ieee80211_vht_cap *vht_capa;
828 829
	u8 uapsd_queues;
	u8 max_sp;
830
	enum nl80211_mesh_power_mode local_pm;
831
	u16 capability;
832
	const u8 *ext_capab;
833
	u8 ext_capab_len;
834 835 836 837
	const u8 *supported_channels;
	u8 supported_channels_len;
	const u8 *supported_oper_classes;
	u8 supported_oper_classes_len;
838 839
	u8 opmode_notif;
	bool opmode_notif_used;
840 841
};

842 843 844 845 846 847
/**
 * struct station_del_parameters - station deletion parameters
 *
 * Used to delete a station entry (or all stations).
 *
 * @mac: MAC address of the station to remove or NULL to remove all stations
848 849 850
 * @subtype: Management frame subtype to use for indicating removal
 *	(10 = Disassociation, 12 = Deauthentication)
 * @reason_code: Reason code for the Disassociation/Deauthentication frame
851 852 853
 */
struct station_del_parameters {
	const u8 *mac;
854 855
	u8 subtype;
	u16 reason_code;
856 857
};

858 859 860 861 862 863 864 865 866 867 868 869 870
/**
 * enum cfg80211_station_type - the type of station being modified
 * @CFG80211_STA_AP_CLIENT: client of an AP interface
 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has
 *	the AP MLME in the device
 * @CFG80211_STA_AP_STA: AP station on managed interface
 * @CFG80211_STA_IBSS: IBSS station
 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry
 *	while TDLS setup is in progress, it moves out of this state when
 *	being marked authorized; use this only if TDLS with external setup is
 *	supported/used)
 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active
 *	entry that is operating, has been marked authorized by userspace)
871 872
 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
873 874 875 876 877 878 879 880
 */
enum cfg80211_station_type {
	CFG80211_STA_AP_CLIENT,
	CFG80211_STA_AP_MLME_CLIENT,
	CFG80211_STA_AP_STA,
	CFG80211_STA_IBSS,
	CFG80211_STA_TDLS_PEER_SETUP,
	CFG80211_STA_TDLS_PEER_ACTIVE,
881 882
	CFG80211_STA_MESH_PEER_KERNEL,
	CFG80211_STA_MESH_PEER_USER,
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900
};

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

901 902 903 904 905 906
/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
907 908
 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
909
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
910
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
911 912
 */
enum rate_info_flags {
913 914
	RATE_INFO_FLAGS_MCS			= BIT(0),
	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
	RATE_INFO_FLAGS_SHORT_GI		= BIT(2),
	RATE_INFO_FLAGS_60G			= BIT(3),
};

/**
 * enum rate_info_bw - rate bandwidth information
 *
 * Used by the driver to indicate the rate bandwidth.
 *
 * @RATE_INFO_BW_5: 5 MHz bandwidth
 * @RATE_INFO_BW_10: 10 MHz bandwidth
 * @RATE_INFO_BW_20: 20 MHz bandwidth
 * @RATE_INFO_BW_40: 40 MHz bandwidth
 * @RATE_INFO_BW_80: 80 MHz bandwidth
 * @RATE_INFO_BW_160: 160 MHz bandwidth
 */
enum rate_info_bw {
	RATE_INFO_BW_5,
	RATE_INFO_BW_10,
	RATE_INFO_BW_20,
	RATE_INFO_BW_40,
	RATE_INFO_BW_80,
	RATE_INFO_BW_160,
938 939 940 941 942 943 944 945 946 947
};

/**
 * 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
948
 * @nss: number of streams (VHT only)
949
 * @bw: bandwidth (from &enum rate_info_bw)
950 951 952 953 954
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
955
	u8 nss;
956
	u8 bw;
957 958
};

959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
/**
 * 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;
};

990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
/**
 * struct cfg80211_tid_stats - per-TID statistics
 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to
 *	indicate the relevant values in this struct are filled
 * @rx_msdu: number of received MSDUs
 * @tx_msdu: number of (attempted) transmitted MSDUs
 * @tx_msdu_retries: number of retries (not counting the first) for
 *	transmitted MSDUs
 * @tx_msdu_failed: number of failed transmitted MSDUs
 */
struct cfg80211_tid_stats {
	u32 filled;
	u64 rx_msdu;
	u64 tx_msdu;
	u64 tx_msdu_retries;
	u64 tx_msdu_failed;
};

1008 1009
#define IEEE80211_MAX_CHAINS	4

1010
/**
1011
 * struct station_info - station information
1012
 *
1013
 * Station information filled by driver for get_station() and dump_station.
1014
 *
1015 1016
 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to
 *	indicate the relevant values in this struct for them
1017
 * @connected_time: time(in secs) since a station is last connected
1018
 * @inactive_time: time since last station activity (tx/rx) in milliseconds
1019 1020
 * @rx_bytes: bytes (size of MPDUs) received from this station
 * @tx_bytes: bytes (size of MPDUs) transmitted to this station
1021 1022 1023
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
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Johannes Berg 已提交
1024 1025 1026 1027
 * @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_.
1028 1029 1030
 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg
 * @chain_signal: per-chain signal strength of last received packet in dBm
 * @chain_signal_avg: per-chain signal strength average in dBm
1031 1032
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
1033 1034 1035 1036
 * @rx_packets: packets (MSDUs & MMPDUs) received from this station
 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station
 * @tx_retries: cumulative retry counts (MPDUs)
 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK)
1037
 * @rx_dropped_misc:  Dropped for un-specified reason.
1038
 * @bss_param: current BSS parameters
1039 1040 1041 1042
 * @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.
1043 1044 1045 1046 1047
 * @assoc_req_ies: IEs from (Re)Association Request.
 *	This is used only when in AP mode with drivers that do not use
 *	user space MLME/SME implementation. The information is provided for
 *	the cfg80211_new_sta() calls to notify user space of the IEs.
 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets.
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Johannes Berg 已提交
1048
 * @sta_flags: station flags mask & values
1049
 * @beacon_loss_count: Number of times beacon loss event has triggered.
1050
 * @t_offset: Time offset of the station relative to this host.
1051 1052 1053
 * @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
1054 1055
 * @expected_throughput: expected throughput in kbps (including 802.11 headers)
 *	towards this station.
1056 1057 1058
 * @rx_beacon: number of beacons received from this peer
 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received
 *	from this peer
1059 1060
 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last
 *	(IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs.
1061
 */
1062
struct station_info {
1063
	u32 filled;
1064
	u32 connected_time;
1065
	u32 inactive_time;
1066 1067
	u64 rx_bytes;
	u64 tx_bytes;
1068 1069 1070
	u16 llid;
	u16 plid;
	u8 plink_state;
1071
	s8 signal;
1072
	s8 signal_avg;
1073 1074 1075 1076 1077

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

1078
	struct rate_info txrate;
1079
	struct rate_info rxrate;
1080 1081
	u32 rx_packets;
	u32 tx_packets;
1082 1083
	u32 tx_retries;
	u32 tx_failed;
1084
	u32 rx_dropped_misc;
1085
	struct sta_bss_parameters bss_param;
1086
	struct nl80211_sta_flag_update sta_flags;
1087 1088

	int generation;
1089 1090 1091

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
1092

1093
	u32 beacon_loss_count;
1094
	s64 t_offset;
1095 1096 1097
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
1098

1099
	u32 expected_throughput;
1100 1101 1102

	u64 rx_beacon;
	u8 rx_beacon_signal_avg;
1103
	struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1];
1104 1105
};

1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
/**
 * cfg80211_get_station - retrieve information about a given station
 * @dev: the device where the station is supposed to be connected to
 * @mac_addr: the mac address of the station of interest
 * @sinfo: pointer to the structure to fill with the information
 *
 * Returns 0 on success and sinfo is filled with the available information
 * otherwise returns a negative error code and the content of sinfo has to be
 * considered undefined.
 */
int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr,
			 struct station_info *sinfo);

1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
/**
 * 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
1130
 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
1131 1132 1133 1134 1135 1136 1137
 */
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,
1138
	MONITOR_FLAG_ACTIVE		= 1<<NL80211_MNTR_FLAG_ACTIVE,
1139 1140
};

1141 1142 1143 1144 1145 1146
/**
 * 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
1154 1155 1156
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
1157
	MPATH_INFO_SN			= BIT(1),
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
	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
1172
 * @sn: target sequence number
1173 1174 1175 1176 1177
 * @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
1178 1179 1180 1181
 * @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.
1182 1183 1184 1185
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
1186
	u32 sn;
1187 1188 1189 1190 1191
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
1192 1193

	int generation;
1194 1195
};

1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206
/**
 * 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)
1207 1208 1209
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
1210
 * @ap_isolate: do not forward packets between connected stations
1211 1212
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
1213 1214
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
1215 1216 1217 1218 1219
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
1220
	const u8 *basic_rates;
1221
	u8 basic_rates_len;
1222
	int ap_isolate;
1223
	int ht_opmode;
1224
	s8 p2p_ctwindow, p2p_opp_ps;
1225
};
1226

1227
/**
1228 1229 1230
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
 *
 * @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
1279 1280 1281 1282 1283 1284 1285
 *
 * @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.
1286 1287 1288
 * @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.
1289 1290 1291 1292
 * @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.
1293 1294 1295
 * @plink_timeout: If no tx activity is seen from a STA we've established
 *	peering with for longer than this time (in seconds), then remove it
 *	from the STA's list of peers.  Default is 30 minutes.
1296
 */
1297 1298 1299 1300 1301
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
1302 1303 1304
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
1305
	bool auto_open_plinks;
1306
	u32 dot11MeshNbrOffsetMaxNeighbor;
1307
	u8 dot11MeshHWMPmaxPREQretries;
1308 1309 1310 1311
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
1312
	u16 dot11MeshHWMPperrMinInterval;
1313
	u16 dot11MeshHWMPnetDiameterTraversalTime;
1314
	u8 dot11MeshHWMPRootMode;
1315
	u16 dot11MeshHWMPRannInterval;
1316
	bool dot11MeshGateAnnouncementProtocol;
1317
	bool dot11MeshForwarding;
1318
	s32 rssi_threshold;
1319
	u16 ht_opmode;
1320 1321
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
1322
	u16 dot11MeshHWMPconfirmationInterval;
1323 1324
	enum nl80211_mesh_power_mode power_mode;
	u16 dot11MeshAwakeWindowDuration;
1325
	u32 plink_timeout;
1326 1327
};

1328 1329
/**
 * struct mesh_setup - 802.11s mesh setup configuration
1330
 * @chandef: defines the channel to use
1331 1332
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
1333
 * @sync_method: which synchronization method to use
1334 1335
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
1336
 * @auth_id: which authentication method this mesh is using
1337 1338
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
1339 1340
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
1341
 * @user_mpm: userspace handles all MPM functions
1342 1343
 * @dtim_period: DTIM period to use
 * @beacon_interval: beacon interval to use
1344
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
1345
 * @basic_rates: basic rates to use when creating the mesh
1346 1347 1348 1349
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
1350
	struct cfg80211_chan_def chandef;
1351 1352
	const u8 *mesh_id;
	u8 mesh_id_len;
1353 1354 1355
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
1356
	u8 auth_id;
1357 1358
	const u8 *ie;
	u8 ie_len;
1359
	bool is_authenticated;
1360
	bool is_secure;
1361
	bool user_mpm;
1362 1363
	u8 dtim_period;
	u16 beacon_interval;
1364
	int mcast_rate[IEEE80211_NUM_BANDS];
1365
	u32 basic_rates;
1366 1367
};

1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
/**
 * struct ocb_setup - 802.11p OCB mode setup configuration
 * @chandef: defines the channel to use
 *
 * These parameters are fixed when connecting to the network
 */
struct ocb_setup {
	struct cfg80211_chan_def chandef;
};

1378 1379
/**
 * struct ieee80211_txq_params - TX queue parameters
1380
 * @ac: AC identifier
1381 1382 1383 1384 1385 1386 1387 1388
 * @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 {
1389
	enum nl80211_ac ac;
1390 1391 1392 1393 1394 1395
	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.
 */
1418

1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434
/**
 * 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.
1435
 * @n_channels: total number of channels to scan
1436
 * @scan_width: channel width for scanning
1437 1438
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1439
 * @flags: bit field of flags controlling operation
1440
 * @rates: bitmap of rates to advertise for each band
1441
 * @wiphy: the wiphy this was for
1442
 * @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
1445
 * @notified: (internal) scan request was notified as done or aborted
1446
 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1447 1448 1449 1450
 * @mac_addr: MAC address used with randomisation
 * @mac_addr_mask: MAC address mask used with randomisation, bits that
 *	are 0 in the mask should be randomised, bits that are 1 should
 *	be taken from the @mac_addr
1451 1452 1453 1454 1455
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1456
	enum nl80211_bss_scan_width scan_width;
1457
	const u8 *ie;
1458
	size_t ie_len;
1459
	u32 flags;
1460

1461 1462
	u32 rates[IEEE80211_NUM_BANDS];

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1463 1464
	struct wireless_dev *wdev;

1465 1466 1467
	u8 mac_addr[ETH_ALEN] __aligned(2);
	u8 mac_addr_mask[ETH_ALEN] __aligned(2);

1468 1469
	/* internal */
	struct wiphy *wiphy;
1470
	unsigned long scan_start;
1471
	bool aborted, notified;
1472
	bool no_cck;
1473 1474 1475

	/* keep last */
	struct ieee80211_channel *channels[0];
1476 1477
};

1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488
static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask)
{
	int i;

	get_random_bytes(buf, ETH_ALEN);
	for (i = 0; i < ETH_ALEN; i++) {
		buf[i] &= ~mask[i];
		buf[i] |= addr[i] & mask[i];
	}
}

1489 1490 1491
/**
 * struct cfg80211_match_set - sets of attributes to match
 *
1492 1493
 * @ssid: SSID to be matched; may be zero-length for no match (RSSI only)
 * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
1494 1495 1496
 */
struct cfg80211_match_set {
	struct cfg80211_ssid ssid;
1497
	s32 rssi_thold;
1498 1499
};

1500 1501 1502 1503 1504 1505
/**
 * 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
1506
 * @scan_width: channel width for scanning
1507
 * @interval: interval between each scheduled scan cycle
1508 1509
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1510
 * @flags: bit field of flags controlling operation
1511 1512 1513 1514 1515
 * @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
1516 1517
 * @wiphy: the wiphy this was for
 * @dev: the interface
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 * @scan_start: start time of the scheduled scan
1519
 * @channels: channels to scan
1520 1521
 * @min_rssi_thold: for drivers only supporting a single threshold, this
 *	contains the minimum over all matchsets
1522 1523 1524 1525
 * @mac_addr: MAC address used with randomisation
 * @mac_addr_mask: MAC address mask used with randomisation, bits that
 *	are 0 in the mask should be randomised, bits that are 1 should
 *	be taken from the @mac_addr
1526
 * @rcu_head: RCU callback used to free the struct
1527 1528
 * @owner_nlportid: netlink portid of owner (if this should is a request
 *	owned by a particular socket)
1529 1530 1531 1532
 * @delay: delay in seconds to use before starting the first scan
 *	cycle.  The driver may ignore this parameter and start
 *	immediately (or at any other time), if this feature is not
 *	supported.
1533 1534 1535 1536 1537
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1538
	enum nl80211_bss_scan_width scan_width;
1539
	u32 interval;
1540 1541
	const u8 *ie;
	size_t ie_len;
1542
	u32 flags;
1543 1544
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1545
	s32 min_rssi_thold;
1546
	u32 delay;
1547

1548 1549 1550
	u8 mac_addr[ETH_ALEN] __aligned(2);
	u8 mac_addr_mask[ETH_ALEN] __aligned(2);

1551 1552 1553
	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1554
	unsigned long scan_start;
1555
	struct rcu_head rcu_head;
1556
	u32 owner_nlportid;
1557 1558 1559 1560 1561

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

1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
/**
 * 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,
};

1575 1576
/**
 * struct cfg80211_bss_ie_data - BSS entry IE data
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 * @tsf: TSF contained in the frame that carried these IEs
1578 1579
 * @rcu_head: internal use, for freeing
 * @len: length of the IEs
1580
 * @from_beacon: these IEs are known to come from a beacon
1581 1582 1583
 * @data: IE data
 */
struct cfg80211_bss_ies {
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	u64 tsf;
1585 1586
	struct rcu_head rcu_head;
	int len;
1587
	bool from_beacon;
1588 1589 1590
	u8 data[];
};

1591 1592 1593 1594 1595 1596
/**
 * 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
1598
 * @scan_width: width of the control channel
1599 1600 1601
 * @bssid: BSSID of the BSS
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
1602 1603 1604 1605
 * @ies: the information elements (Note that there is no guarantee that these
 *	are well-formed!); this is a pointer to either the beacon_ies or
 *	proberesp_ies depending on whether Probe Response frame has been
 *	received. It is always non-%NULL.
1606
 * @beacon_ies: the information elements from the last Beacon frame
1607 1608 1609
 *	(implementation note: if @hidden_beacon_bss is set this struct doesn't
 *	own the beacon_ies, but they're just pointers to the ones from the
 *	@hidden_beacon_bss struct)
1610
 * @proberesp_ies: the information elements from the last Probe Response frame
1611 1612 1613 1614
 * @hidden_beacon_bss: in case this BSS struct represents a probe response from
 *	a BSS that hides the SSID in its beacon, this points to the BSS struct
 *	that holds the beacon data. @beacon_ies is still valid, of course, and
 *	points to the same data as hidden_beacon_bss->beacon_ies in that case.
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 * @signal: signal strength value (type depends on the wiphy's signal_type)
1616 1617 1618 1619
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
	struct ieee80211_channel *channel;
1620
	enum nl80211_bss_scan_width scan_width;
1621

1622 1623 1624 1625
	const struct cfg80211_bss_ies __rcu *ies;
	const struct cfg80211_bss_ies __rcu *beacon_ies;
	const struct cfg80211_bss_ies __rcu *proberesp_ies;

1626
	struct cfg80211_bss *hidden_beacon_bss;
1627 1628 1629

	s32 signal;

1630 1631 1632
	u16 beacon_interval;
	u16 capability;

1633
	u8 bssid[ETH_ALEN];
1634

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	u8 priv[0] __aligned(sizeof(void *));
1636 1637
};

1638 1639 1640 1641
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
1642 1643 1644
 *
 * Note that the return value is an RCU-protected pointer, so
 * rcu_read_lock() must be held when calling this function.
1645
 * Return: %NULL if not found.
1646 1647 1648 1649
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1650 1651 1652 1653 1654
/**
 * struct cfg80211_auth_request - Authentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * authentication.
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 *
1656 1657
 * @bss: The BSS to authenticate with, the callee must obtain a reference
 *	to it if it needs to keep it.
1658 1659 1660
 * @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
1664 1665 1666
 * @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
1667 1668
 */
struct cfg80211_auth_request {
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	struct cfg80211_bss *bss;
1670 1671
	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;
1675 1676
	const u8 *sae_data;
	size_t sae_data_len;
1677 1678
};

1679 1680 1681 1682
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
1683
 * @ASSOC_REQ_DISABLE_VHT:  Disable VHT
1684
 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association
1685 1686 1687
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
1688
	ASSOC_REQ_DISABLE_VHT		= BIT(1),
1689
	ASSOC_REQ_USE_RRM		= BIT(2),
1690 1691
};

1692 1693 1694 1695 1696
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1697 1698 1699 1700
 * @bss: The BSS to associate with. If the call is successful the driver is
 *	given a reference that it must give back to cfg80211_send_rx_assoc()
 *	or to cfg80211_assoc_timeout(). To ensure proper refcounting, new
 *	association requests while already associating must be rejected.
1701 1702
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1703
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
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 * @crypto: crypto settings
1705
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
1706 1707
 * @flags:  See &enum cfg80211_assoc_req_flags
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1708
 *	will be used in ht_capa.  Un-supported values will be ignored.
1709
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
1710 1711
 * @vht_capa: VHT capability override
 * @vht_capa_mask: VHT capability mask indicating which fields to use
1712 1713
 */
struct cfg80211_assoc_request {
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	struct cfg80211_bss *bss;
1715
	const u8 *ie, *prev_bssid;
1716
	size_t ie_len;
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	struct cfg80211_crypto_settings crypto;
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	bool use_mfp;
1719 1720 1721
	u32 flags;
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1722
	struct ieee80211_vht_cap vht_capa, vht_capa_mask;
1723 1724 1725 1726 1727 1728 1729 1730
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
1731
 * @bssid: the BSSID of the BSS to deauthenticate from
1732 1733
 * @ie: Extra IEs to add to Deauthentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
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 * @reason_code: The reason code for the deauthentication
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 * @local_state_change: if set, change local state only and
 *	do not set a deauth frame
1737 1738
 */
struct cfg80211_deauth_request {
1739
	const u8 *bssid;
1740 1741
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1743
	bool local_state_change;
1744 1745 1746 1747 1748 1749 1750 1751
};

/**
 * 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
1753 1754
 * @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
1756 1757
 * @local_state_change: This is a request for a local state only, i.e., no
 *	Disassociation frame is to be transmitted.
1758 1759
 */
struct cfg80211_disassoc_request {
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	struct cfg80211_bss *bss;
1761 1762
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1764
	bool local_state_change;
1765 1766
};

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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.
1777
 * @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
1782
 * @beacon_interval: beacon interval to use
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 * @privacy: this is a protected network, keys will be configured
 *	after joining
1785 1786 1787 1788
 * @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.
1789 1790 1791
 * @userspace_handles_dfs: whether user space controls DFS operation, i.e.
 *	changes the channel when a radar is detected. This is required
 *	to operate on DFS channels.
1792
 * @basic_rates: bitmap of basic rates to use when creating the IBSS
1793
 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
1794
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1795
 *	will be used in ht_capa.  Un-supported values will be ignored.
1796
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
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 */
struct cfg80211_ibss_params {
1799 1800
	const u8 *ssid;
	const u8 *bssid;
1801
	struct cfg80211_chan_def chandef;
1802
	const u8 *ie;
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	u8 ssid_len, ie_len;
1804
	u16 beacon_interval;
1805
	u32 basic_rates;
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	bool channel_fixed;
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	bool privacy;
1808
	bool control_port;
1809
	bool userspace_handles_dfs;
1810
	int mcast_rate[IEEE80211_NUM_BANDS];
1811 1812
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
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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)
1823 1824
 * @channel_hint: The channel of the recommended BSS for initial connection or
 *	%NULL if not specified
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 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan
 *	results)
1827 1828 1829 1830
 * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or
 *	%NULL if not specified. Unlike the @bssid parameter, the driver is
 *	allowed to ignore this @bssid_hint if it has knowledge of a better BSS
 *	to use.
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 * @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
1837
 * @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
1842
 * @flags:  See &enum cfg80211_assoc_req_flags
1843
 * @bg_scan_period:  Background scan period in seconds
1844
 *	or -1 to indicate that default value is to be used.
1845
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1846
 *	will be used in ht_capa.  Un-supported values will be ignored.
1847
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
1848 1849
 * @vht_capa:  VHT Capability overrides
 * @vht_capa_mask: The bits of vht_capa which are to be used.
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 */
struct cfg80211_connect_params {
	struct ieee80211_channel *channel;
1853
	struct ieee80211_channel *channel_hint;
1854
	const u8 *bssid;
1855
	const u8 *bssid_hint;
1856
	const u8 *ssid;
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	size_t ssid_len;
	enum nl80211_auth_type auth_type;
1859
	const u8 *ie;
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	size_t ie_len;
	bool privacy;
1862
	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;
1866
	u32 flags;
1867
	int bg_scan_period;
1868 1869
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1870 1871
	struct ieee80211_vht_cap vht_capa;
	struct ieee80211_vht_cap vht_capa_mask;
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};

1874 1875
/**
 * 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
1881
 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled
1882 1883 1884 1885 1886 1887
 */
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,
1888
	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
1889
	WIPHY_PARAM_DYN_ACK		= 1 << 5,
1890 1891
};

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/*
 * cfg80211_bitrate_mask - masks for bitrate control
 */
struct cfg80211_bitrate_mask {
	struct {
		u32 legacy;
1898
		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
1899
		u16 vht_mcs[NL80211_VHT_NSS_MAX];
1900
		enum nl80211_txrate_gi gi;
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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 {
1913 1914
	const u8 *bssid;
	const u8 *pmkid;
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};
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/**
1918
 * struct cfg80211_pkt_pattern - packet pattern
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 * @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)
1923
 * @pkt_offset: packet offset (in bytes)
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 *
 * Internal note: @mask and @pattern are allocated in one chunk of
 * memory, free @mask only!
 */
1928
struct cfg80211_pkt_pattern {
1929
	const u8 *mask, *pattern;
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	int pattern_len;
1931
	int pkt_offset;
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};

1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
/**
 * struct cfg80211_wowlan_tcp - TCP connection parameters
 *
 * @sock: (internal) socket for source port allocation
 * @src: source IP address
 * @dst: destination IP address
 * @dst_mac: destination MAC address
 * @src_port: source port
 * @dst_port: destination port
 * @payload_len: data payload length
 * @payload: data payload buffer
 * @payload_seq: payload sequence stamping configuration
 * @data_interval: interval at which to send data packets
 * @wake_len: wakeup payload match length
 * @wake_data: wakeup payload match data
 * @wake_mask: wakeup payload match mask
 * @tokens_size: length of the tokens buffer
 * @payload_tok: payload token usage configuration
 */
struct cfg80211_wowlan_tcp {
	struct socket *sock;
	__be32 src, dst;
	u16 src_port, dst_port;
	u8 dst_mac[ETH_ALEN];
	int payload_len;
	const u8 *payload;
	struct nl80211_wowlan_tcp_data_seq payload_seq;
	u32 data_interval;
	u32 wake_len;
	const u8 *wake_data, *wake_mask;
	u32 tokens_size;
	/* must be last, variable member */
	struct nl80211_wowlan_tcp_data_token payload_tok;
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};

/**
 * struct cfg80211_wowlan - Wake on Wireless-LAN support info
 *
 * This structure defines the enabled WoWLAN triggers for the device.
 * @any: wake up on any activity -- special trigger if device continues
 *	operating as normal during suspend
 * @disconnect: wake up if getting disconnected
 * @magic_pkt: wake up on receiving magic packet
 * @patterns: wake up on receiving packet matching a pattern
 * @n_patterns: number of patterns
1979 1980 1981 1982
 * @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
1983 1984
 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
 *	NULL if not configured.
1985
 * @nd_config: configuration for the scan to be used for net detect wake.
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 */
struct cfg80211_wowlan {
1988 1989 1990
	bool any, disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
	     rfkill_release;
1991
	struct cfg80211_pkt_pattern *patterns;
1992
	struct cfg80211_wowlan_tcp *tcp;
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1993
	int n_patterns;
1994
	struct cfg80211_sched_scan_request *nd_config;
J
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1995 1996
};

1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
/**
 * struct cfg80211_coalesce_rules - Coalesce rule parameters
 *
 * This structure defines coalesce rule for the device.
 * @delay: maximum coalescing delay in msecs.
 * @condition: condition for packet coalescence.
 *	see &enum nl80211_coalesce_condition.
 * @patterns: array of packet patterns
 * @n_patterns: number of patterns
 */
struct cfg80211_coalesce_rules {
	int delay;
	enum nl80211_coalesce_condition condition;
	struct cfg80211_pkt_pattern *patterns;
	int n_patterns;
};

/**
 * struct cfg80211_coalesce - Packet coalescing settings
 *
 * This structure defines coalescing settings.
 * @rules: array of coalesce rules
 * @n_rules: number of rules
 */
struct cfg80211_coalesce {
	struct cfg80211_coalesce_rules *rules;
	int n_rules;
};

2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054
/**
 * struct cfg80211_wowlan_nd_match - information about the match
 *
 * @ssid: SSID of the match that triggered the wake up
 * @n_channels: Number of channels where the match occurred.  This
 *	value may be zero if the driver can't report the channels.
 * @channels: center frequencies of the channels where a match
 *	occurred (in MHz)
 */
struct cfg80211_wowlan_nd_match {
	struct cfg80211_ssid ssid;
	int n_channels;
	u32 channels[];
};

/**
 * struct cfg80211_wowlan_nd_info - net detect wake up information
 *
 * @n_matches: Number of match information instances provided in
 *	@matches.  This value may be zero if the driver can't provide
 *	match information.
 * @matches: Array of pointers to matches containing information about
 *	the matches that triggered the wake up.
 */
struct cfg80211_wowlan_nd_info {
	int n_matches;
	struct cfg80211_wowlan_nd_match *matches[];
};

2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070
/**
 * struct cfg80211_wowlan_wakeup - wakeup report
 * @disconnect: woke up by getting disconnected
 * @magic_pkt: woke up by receiving magic packet
 * @gtk_rekey_failure: woke up by GTK rekey failure
 * @eap_identity_req: woke up by EAP identity request packet
 * @four_way_handshake: woke up by 4-way handshake
 * @rfkill_release: woke up by rfkill being released
 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern
 * @packet_present_len: copied wakeup packet data
 * @packet_len: original wakeup packet length
 * @packet: The packet causing the wakeup, if any.
 * @packet_80211:  For pattern match, magic packet and other data
 *	frame triggers an 802.3 frame should be reported, for
 *	disconnect due to deauth 802.11 frame. This indicates which
 *	it is.
2071 2072 2073
 * @tcp_match: TCP wakeup packet received
 * @tcp_connlost: TCP connection lost or failed to establish
 * @tcp_nomoretokens: TCP data ran out of tokens
2074
 * @net_detect: if not %NULL, woke up because of net detect
2075 2076 2077 2078
 */
struct cfg80211_wowlan_wakeup {
	bool disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
2079 2080
	     rfkill_release, packet_80211,
	     tcp_match, tcp_connlost, tcp_nomoretokens;
2081 2082 2083
	s32 pattern_idx;
	u32 packet_present_len, packet_len;
	const void *packet;
2084
	struct cfg80211_wowlan_nd_info *net_detect;
2085 2086
};

2087 2088
/**
 * struct cfg80211_gtk_rekey_data - rekey data
2089 2090 2091
 * @kek: key encryption key (NL80211_KEK_LEN bytes)
 * @kck: key confirmation key (NL80211_KCK_LEN bytes)
 * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes)
2092 2093
 */
struct cfg80211_gtk_rekey_data {
2094
	const u8 *kek, *kck, *replay_ctr;
2095 2096
};

2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111
/**
 * struct cfg80211_update_ft_ies_params - FT IE Information
 *
 * This structure provides information needed to update the fast transition IE
 *
 * @md: The Mobility Domain ID, 2 Octet value
 * @ie: Fast Transition IEs
 * @ie_len: Length of ft_ie in octets
 */
struct cfg80211_update_ft_ies_params {
	u16 md;
	const u8 *ie;
	size_t ie_len;
};

2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123
/**
 * struct cfg80211_mgmt_tx_params - mgmt tx parameters
 *
 * This structure provides information needed to transmit a mgmt frame
 *
 * @chan: channel to use
 * @offchan: indicates wether off channel operation is required
 * @wait: duration for ROC
 * @buf: buffer to transmit
 * @len: buffer length
 * @no_cck: don't use cck rates for this frame
 * @dont_wait_for_ack: tells the low level not to wait for an ack
2124 2125
 * @n_csa_offsets: length of csa_offsets array
 * @csa_offsets: array of all the csa offsets in the frame
2126 2127 2128 2129 2130 2131 2132 2133 2134
 */
struct cfg80211_mgmt_tx_params {
	struct ieee80211_channel *chan;
	bool offchan;
	unsigned int wait;
	const u8 *buf;
	size_t len;
	bool no_cck;
	bool dont_wait_for_ack;
2135 2136
	int n_csa_offsets;
	const u16 *csa_offsets;
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
/**
 * struct cfg80211_dscp_exception - DSCP exception
 *
 * @dscp: DSCP value that does not adhere to the user priority range definition
 * @up: user priority value to which the corresponding DSCP value belongs
 */
struct cfg80211_dscp_exception {
	u8 dscp;
	u8 up;
};

/**
 * struct cfg80211_dscp_range - DSCP range definition for user priority
 *
 * @low: lowest DSCP value of this user priority range, inclusive
 * @high: highest DSCP value of this user priority range, inclusive
 */
struct cfg80211_dscp_range {
	u8 low;
	u8 high;
};

/* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */
#define IEEE80211_QOS_MAP_MAX_EX	21
#define IEEE80211_QOS_MAP_LEN_MIN	16
#define IEEE80211_QOS_MAP_LEN_MAX \
	(IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX)

/**
 * struct cfg80211_qos_map - QoS Map Information
 *
 * This struct defines the Interworking QoS map setting for DSCP values
 *
 * @num_des: number of DSCP exceptions (0..21)
 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from
 *	the user priority DSCP range definition
 * @up: DSCP range definition for a particular user priority
 */
struct cfg80211_qos_map {
	u8 num_des;
	struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX];
	struct cfg80211_dscp_range up[8];
};

2183 2184 2185 2186 2187 2188 2189 2190 2191
/**
 * 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.
 *
2192 2193 2194 2195
 * 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
2200 2201 2202
 * @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,
2205
 *	must set the struct wireless_dev's iftype. Beware: You must create
2206
 *	the new netdev in the wiphy's network namespace! Returns the struct
2207 2208
 *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
 *	also set the address member in the wdev.
2209
 *
2210
 * @del_virtual_intf: remove the virtual interface
2211
 *
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 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
2214
 *
2215 2216 2217 2218 2219 2220
 * @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
2221 2222
 *	after it returns. This function should return an error if it is
 *	not possible to retrieve the key, -ENOENT if it doesn't exist.
2223 2224
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
2225
 *	and @key_index, return -ENOENT if the key doesn't exist.
2226 2227
 *
 * @set_default_key: set the default key on an interface
2228
 *
2229 2230
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
2231 2232
 * @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.
2237 2238
 *
 * @add_station: Add a new station.
2239
 * @del_station: Remove a station
2240 2241 2242
 * @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
2243 2244
 *	them, also against the existing state! Drivers must call
 *	cfg80211_check_station_change() to validate the information.
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 * @get_station: get station information for the station identified by @mac
 * @dump_station: dump station callback -- resume dump at index @idx
 *
 * @add_mpath: add a fixed mesh path
 * @del_mpath: delete a given mesh path
 * @change_mpath: change a given mesh path
 * @get_mpath: get a mesh path for the given parameters
 * @dump_mpath: dump mesh path callback -- resume dump at index @idx
2253 2254
 * @get_mpp: get a mesh proxy path for the given parameters
 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx
2255
 * @join_mesh: join the mesh network with the specified parameters
2256
 *	(invoked with the wireless_dev mutex held)
2257
 * @leave_mesh: leave the current mesh network
2258
 *	(invoked with the wireless_dev mutex held)
2259
 *
2260
 * @get_mesh_config: Get the current mesh configuration
2261
 *
2262
 * @update_mesh_config: Update mesh parameters on a running mesh.
2263 2264 2265
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
2266
 * @change_bss: Modify parameters for a given BSS.
2267 2268
 *
 * @set_txq_params: Set TX queue parameters
2269
 *
2270 2271 2272 2273 2274 2275 2276 2277
 * @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.
2278
 *
2279 2280 2281 2282
 * @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.
2283 2284
 *
 * @auth: Request to authenticate with the specified peer
2285
 *	(invoked with the wireless_dev mutex held)
2286
 * @assoc: Request to (re)associate with the specified peer
2287
 *	(invoked with the wireless_dev mutex held)
2288
 * @deauth: Request to deauthenticate from the specified peer
2289
 *	(invoked with the wireless_dev mutex held)
2290
 * @disassoc: Request to disassociate from the specified peer
2291
 *	(invoked with the wireless_dev mutex held)
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 *
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2293 2294 2295 2296
 * @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.
2297
 *	(invoked with the wireless_dev mutex held)
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2298
 * @disconnect: Disconnect from the BSS/ESS.
2299
 *	(invoked with the wireless_dev mutex held)
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2300
 *
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2301 2302 2303
 * @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.
2304
 *	(invoked with the wireless_dev mutex held)
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2305
 * @leave_ibss: Leave the IBSS.
2306
 *	(invoked with the wireless_dev mutex held)
2307
 *
2308 2309 2310
 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
 *	MESH mode)
 *
2311 2312 2313 2314
 * @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.
2315
 *
2316
 * @set_tx_power: set the transmit power according to the parameters,
2317 2318 2319 2320
 *	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.)
2321
 * @get_tx_power: store the current TX power into the dbm variable;
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2322 2323
 *	return 0 if successful
 *
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2324 2325
 * @set_wds_peer: set the WDS peer for a WDS interface
 *
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2326 2327
 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
 *	functions to adjust rfkill hw state
2328
 *
2329 2330
 * @dump_survey: get site survey information.
 *
2331 2332 2333 2334 2335 2336 2337 2338
 * @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.
2339 2340 2341
 * @mgmt_tx: Transmit a management frame.
 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
 *	frame on another channel
2342
 *
2343
 * @testmode_cmd: run a test mode command; @wdev may be %NULL
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2344 2345 2346 2347 2348 2349
 * @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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2350
 *
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2351 2352
 * @set_bitrate_mask: set the bitrate mask configuration
 *
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2353 2354 2355 2356 2357
 * @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.
2358 2359
 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
 *	allows the driver to adjust the dynamic ps timeout value.
2360
 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
2361 2362
 * @set_cqm_txe_config: Configure connection quality monitor TX error
 *	thresholds.
2363
 * @sched_scan_start: Tell the driver to start a scheduled scan.
2364 2365 2366 2367 2368 2369
 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This
 *	call must stop the scheduled scan and be ready for starting a new one
 *	before it returns, i.e. @sched_scan_start may be called immediately
 *	after that again and should not fail in that case. The driver should
 *	not call cfg80211_sched_scan_stopped() for a requested stop (when this
 *	method returns 0.)
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2370
 *
2371 2372 2373
 * @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.
2374 2375 2376 2377 2378 2379 2380
 *
 * @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).
2381
 *
2382 2383
 * @tdls_mgmt: Transmit a TDLS management frame.
 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
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2384 2385 2386
 *
 * @probe_client: probe an associated client, must return a cookie that it
 *	later passes to cfg80211_probe_status().
2387 2388
 *
 * @set_noack_map: Set the NoAck Map for the TIDs.
2389
 *
2390 2391 2392
 * @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.
2393 2394 2395
 *
 * @start_p2p_device: Start the given P2P device.
 * @stop_p2p_device: Stop the given P2P device.
2396 2397 2398 2399 2400 2401 2402
 *
 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode.
 *	Parameters include ACL policy, an array of MAC address of stations
 *	and the number of MAC addresses. If there is already a list in driver
 *	this new list replaces the existing one. Driver has to clear its ACL
 *	when number of MAC addresses entries is passed as 0. Drivers which
 *	advertise the support for MAC based ACL have to implement this callback.
2403 2404
 *
 * @start_radar_detection: Start radar detection in the driver.
2405 2406 2407 2408
 *
 * @update_ft_ies: Provide updated Fast BSS Transition information to the
 *	driver. If the SME is in the driver/firmware, this information can be
 *	used in building Authentication and Reassociation Request frames.
2409 2410 2411 2412 2413 2414
 *
 * @crit_proto_start: Indicates a critical protocol needs more link reliability
 *	for a given duration (milliseconds). The protocol is provided so the
 *	driver can take the most appropriate actions.
 * @crit_proto_stop: Indicates critical protocol no longer needs increased link
 *	reliability. This operation can not fail.
2415
 * @set_coalesce: Set coalesce parameters.
2416
 *
2417 2418 2419 2420 2421 2422
 * @channel_switch: initiate channel-switch procedure (with CSA). Driver is
 *	responsible for veryfing if the switch is possible. Since this is
 *	inherently tricky driver may decide to disconnect an interface later
 *	with cfg80211_stop_iface(). This doesn't mean driver can accept
 *	everything. It should do it's best to verify requests and reject them
 *	as soon as possible.
2423 2424
 *
 * @set_qos_map: Set QoS mapping information to the driver
2425 2426 2427 2428
 *
 * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the
 *	given interface This is used e.g. for dynamic HT 20/40 MHz channel width
 *	changes during the lifetime of the BSS.
2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439
 *
 * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device
 *	with the given parameters; action frame exchange has been handled by
 *	userspace so this just has to modify the TX path to take the TS into
 *	account.
 *	If the admitted time is 0 just validate the parameters to make sure
 *	the session can be created at all; it is valid to just always return
 *	success for that but that may result in inefficient behaviour (handshake
 *	with the peer followed by immediate teardown when the addition is later
 *	rejected)
 * @del_tx_ts: remove an existing TX TS
2440 2441 2442 2443 2444
 *
 * @join_ocb: join the OCB network with the specified parameters
 *	(invoked with the wireless_dev mutex held)
 * @leave_ocb: leave the current OCB network
 *	(invoked with the wireless_dev mutex held)
2445 2446 2447 2448 2449 2450
 *
 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
 *	is responsible for continually initiating channel-switching operations
 *	and returning to the base channel for communication with the AP.
 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
 *	peers must be on the base channel when the call completes.
2451 2452
 */
struct cfg80211_ops {
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2453
	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
J
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2454
	int	(*resume)(struct wiphy *wiphy);
2455
	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
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2456

2457
	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
2458
						  const char *name,
2459
						  unsigned char name_assign_type,
2460 2461 2462 2463 2464
						  enum nl80211_iftype type,
						  u32 *flags,
						  struct vif_params *params);
	int	(*del_virtual_intf)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
2465 2466
	int	(*change_virtual_intf)(struct wiphy *wiphy,
				       struct net_device *dev,
2467 2468
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
2469 2470

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
2471
			   u8 key_index, bool pairwise, const u8 *mac_addr,
2472 2473
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
2474 2475
			   u8 key_index, bool pairwise, const u8 *mac_addr,
			   void *cookie,
2476 2477
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
2478
			   u8 key_index, bool pairwise, const u8 *mac_addr);
2479 2480
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
2481
				   u8 key_index, bool unicast, bool multicast);
2482 2483 2484
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
2485

2486 2487 2488 2489 2490
	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);
2491 2492 2493


	int	(*add_station)(struct wiphy *wiphy, struct net_device *dev,
2494 2495
			       const u8 *mac,
			       struct station_parameters *params);
2496
	int	(*del_station)(struct wiphy *wiphy, struct net_device *dev,
2497
			       struct station_del_parameters *params);
2498
	int	(*change_station)(struct wiphy *wiphy, struct net_device *dev,
2499 2500
				  const u8 *mac,
				  struct station_parameters *params);
2501
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
2502
			       const u8 *mac, struct station_info *sinfo);
2503
	int	(*dump_station)(struct wiphy *wiphy, struct net_device *dev,
2504
				int idx, u8 *mac, struct station_info *sinfo);
2505 2506

	int	(*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
2507
			       const u8 *dst, const u8 *next_hop);
2508
	int	(*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
2509
			       const u8 *dst);
2510
	int	(*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
2511
				  const u8 *dst, const u8 *next_hop);
2512
	int	(*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
2513
			     u8 *dst, u8 *next_hop, struct mpath_info *pinfo);
2514
	int	(*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
2515 2516
			      int idx, u8 *dst, u8 *next_hop,
			      struct mpath_info *pinfo);
2517 2518 2519 2520 2521
	int	(*get_mpp)(struct wiphy *wiphy, struct net_device *dev,
			   u8 *dst, u8 *mpp, struct mpath_info *pinfo);
	int	(*dump_mpp)(struct wiphy *wiphy, struct net_device *dev,
			    int idx, u8 *dst, u8 *mpp,
			    struct mpath_info *pinfo);
2522
	int	(*get_mesh_config)(struct wiphy *wiphy,
2523 2524
				struct net_device *dev,
				struct mesh_config *conf);
2525
	int	(*update_mesh_config)(struct wiphy *wiphy,
2526 2527 2528 2529 2530 2531 2532
				      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);

2533 2534 2535 2536
	int	(*join_ocb)(struct wiphy *wiphy, struct net_device *dev,
			    struct ocb_setup *setup);
	int	(*leave_ocb)(struct wiphy *wiphy, struct net_device *dev);

2537 2538
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
2539

2540
	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
2541
				  struct ieee80211_txq_params *params);
2542

2543 2544 2545 2546 2547
	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
					     struct net_device *dev,
					     struct ieee80211_channel *chan);

	int	(*set_monitor_channel)(struct wiphy *wiphy,
2548
				       struct cfg80211_chan_def *chandef);
2549

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2550
	int	(*scan)(struct wiphy *wiphy,
2551
			struct cfg80211_scan_request *request);
2552 2553 2554 2555 2556 2557

	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,
2558
			  struct cfg80211_deauth_request *req);
2559
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
2560
			    struct cfg80211_disassoc_request *req);
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2561

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2562 2563 2564 2565 2566
	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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2567 2568 2569
	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);
2570

2571 2572 2573
	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
				  int rate[IEEE80211_NUM_BANDS]);

2574
	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
2575

2576
	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
2577
				enum nl80211_tx_power_setting type, int mbm);
2578 2579
	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
				int *dbm);
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2580

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2581
	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
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2582
				const u8 *addr);
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2583

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2584
	void	(*rfkill_poll)(struct wiphy *wiphy);
2585 2586

#ifdef CONFIG_NL80211_TESTMODE
2587 2588
	int	(*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev,
				void *data, int len);
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2589 2590 2591
	int	(*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb,
				 struct netlink_callback *cb,
				 void *data, int len);
2592
#endif
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2593

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2594 2595 2596 2597 2598
	int	(*set_bitrate_mask)(struct wiphy *wiphy,
				    struct net_device *dev,
				    const u8 *peer,
				    const struct cfg80211_bitrate_mask *mask);

2599 2600 2601
	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
			int idx, struct survey_info *info);

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2602 2603 2604 2605 2606 2607
	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);

2608
	int	(*remain_on_channel)(struct wiphy *wiphy,
2609
				     struct wireless_dev *wdev,
2610 2611 2612 2613
				     struct ieee80211_channel *chan,
				     unsigned int duration,
				     u64 *cookie);
	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
2614
					    struct wireless_dev *wdev,
2615 2616
					    u64 cookie);

2617
	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
2618 2619
			   struct cfg80211_mgmt_tx_params *params,
			   u64 *cookie);
2620
	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
2621
				       struct wireless_dev *wdev,
2622
				       u64 cookie);
2623

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	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
				  bool enabled, int timeout);
2626 2627 2628 2629

	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
				       struct net_device *dev,
				       s32 rssi_thold, u32 rssi_hyst);
2630

2631 2632 2633 2634
	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
				      struct net_device *dev,
				      u32 rate, u32 pkts, u32 intvl);

2635
	void	(*mgmt_frame_register)(struct wiphy *wiphy,
2636
				       struct wireless_dev *wdev,
2637
				       u16 frame_type, bool reg);
2638 2639 2640

	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
2641

2642 2643 2644
	int	(*sched_scan_start)(struct wiphy *wiphy,
				struct net_device *dev,
				struct cfg80211_sched_scan_request *request);
2645
	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
2646 2647 2648

	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_gtk_rekey_data *data);
2649 2650

	int	(*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
2651
			     const u8 *peer, u8 action_code,  u8 dialog_token,
2652
			     u16 status_code, u32 peer_capability,
2653
			     bool initiator, const u8 *buf, size_t len);
2654
	int	(*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
2655
			     const 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);
2659

2660 2661 2662 2663
	int	(*set_noack_map)(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map);

2664
	int	(*get_channel)(struct wiphy *wiphy,
2665
			       struct wireless_dev *wdev,
2666
			       struct cfg80211_chan_def *chandef);
2667 2668 2669 2670 2671

	int	(*start_p2p_device)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
	void	(*stop_p2p_device)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2672 2673 2674

	int	(*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
			       const struct cfg80211_acl_data *params);
2675 2676 2677

	int	(*start_radar_detection)(struct wiphy *wiphy,
					 struct net_device *dev,
2678 2679
					 struct cfg80211_chan_def *chandef,
					 u32 cac_time_ms);
2680 2681
	int	(*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
				 struct cfg80211_update_ft_ies_params *ftie);
2682 2683 2684 2685 2686 2687
	int	(*crit_proto_start)(struct wiphy *wiphy,
				    struct wireless_dev *wdev,
				    enum nl80211_crit_proto_id protocol,
				    u16 duration);
	void	(*crit_proto_stop)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2688 2689
	int	(*set_coalesce)(struct wiphy *wiphy,
				struct cfg80211_coalesce *coalesce);
2690 2691 2692 2693

	int	(*channel_switch)(struct wiphy *wiphy,
				  struct net_device *dev,
				  struct cfg80211_csa_settings *params);
2694

2695 2696 2697
	int     (*set_qos_map)(struct wiphy *wiphy,
			       struct net_device *dev,
			       struct cfg80211_qos_map *qos_map);
2698 2699 2700

	int	(*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
				    struct cfg80211_chan_def *chandef);
2701 2702 2703 2704 2705 2706

	int	(*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
			     u8 tsid, const u8 *peer, u8 user_prio,
			     u16 admitted_time);
	int	(*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
			     u8 tsid, const u8 *peer);
2707 2708 2709 2710 2711 2712 2713 2714

	int	(*tdls_channel_switch)(struct wiphy *wiphy,
				       struct net_device *dev,
				       const u8 *addr, u8 oper_class,
				       struct cfg80211_chan_def *chandef);
	void	(*tdls_cancel_channel_switch)(struct wiphy *wiphy,
					      struct net_device *dev,
					      const u8 *addr);
2715 2716
};

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

/**
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 * enum wiphy_flags - wiphy capability flags
 *
 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this
 *	wiphy at all
 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled
 *	by default -- this flag will be set depending on the kernel's default
 *	on wiphy_new(), but can be changed by the driver if it has a good
 *	reason to override the default
2731 2732 2733
 * @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
2734 2735 2736
 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
 *	control port protocol ethertype. The device also honours the
 *	control_port_no_encrypt flag.
2737
 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
2738 2739
 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
 *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
2740
 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
2741 2742
 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
 *	firmware.
2743
 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
2744 2745 2746 2747 2748 2749
 * @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
2751 2752 2753
 * @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().
2754 2755
 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
 *	responds to probe-requests in hardware.
2756 2757
 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
2758
 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
2759 2760
 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in
 *	beaconing mode (AP, IBSS, Mesh, ...).
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 */
enum wiphy_flags {
2763
	/* use hole at 0 */
2764 2765
	/* use hole at 1 */
	/* use hole at 2 */
2766 2767 2768 2769 2770
	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),
2771
	WIPHY_FLAG_IBSS_RSN			= BIT(8),
2772
	WIPHY_FLAG_MESH_AUTH			= BIT(10),
2773
	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
2774
	/* use hole at 12 */
2775
	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
2776
	WIPHY_FLAG_AP_UAPSD			= BIT(14),
2777 2778
	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
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	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
2780
	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
2781
	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
2782 2783
	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
2784
	WIPHY_FLAG_SUPPORTS_5_10_MHZ		= BIT(22),
2785
	WIPHY_FLAG_HAS_CHANNEL_SWITCH		= BIT(23),
2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807
};

/**
 * 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.
2808
 * @radar_detect_widths: bitmap of channel widths supported for radar detection
2809
 * @radar_detect_regions: bitmap of regions supported for radar detection
2810
 *
2811 2812
 * With this structure the driver can describe which interface
 * combinations it supports concurrently.
2813
 *
2814 2815 2816
 * Examples:
 *
 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total:
2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829
 *
 *  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,
 *  };
 *
 *
2830
 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total:
2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843
 *
 *  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,
 *  };
 *
 *
2844 2845
 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total.
 *
2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865
 * 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;
2866
	u8 radar_detect_widths;
2867
	u8 radar_detect_regions;
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2868 2869
};

2870 2871 2872 2873
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
2884 2885 2886 2887 2888
 * @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
2889
 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection
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 */
enum wiphy_wowlan_support_flags {
2892 2893 2894 2895 2896 2897 2898 2899
	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),
2900
	WIPHY_WOWLAN_NET_DETECT		= BIT(8),
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};

2903 2904 2905 2906 2907 2908 2909 2910
struct wiphy_wowlan_tcp_support {
	const struct nl80211_wowlan_tcp_data_token_feature *tok;
	u32 data_payload_max;
	u32 data_interval_max;
	u32 wake_payload_max;
	bool seq;
};

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/**
 * 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
2918
 * @max_pkt_offset: maximum Rx packet offset
2919 2920 2921 2922 2923
 * @max_nd_match_sets: maximum number of matchsets for net-detect,
 *	similar, but not necessarily identical, to max_match_sets for
 *	scheduled scans.
 *	See &struct cfg80211_sched_scan_request.@match_sets for more
 *	details.
2924
 * @tcp: TCP wakeup support information
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 */
struct wiphy_wowlan_support {
	u32 flags;
	int n_patterns;
	int pattern_max_len;
	int pattern_min_len;
2931
	int max_pkt_offset;
2932
	int max_nd_match_sets;
2933
	const struct wiphy_wowlan_tcp_support *tcp;
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};

2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954
/**
 * struct wiphy_coalesce_support - coalesce support data
 * @n_rules: maximum number of coalesce rules
 * @max_delay: maximum supported coalescing delay in msecs
 * @n_patterns: number of supported patterns in a rule
 *	(see nl80211.h for the pattern definition)
 * @pattern_max_len: maximum length of each pattern
 * @pattern_min_len: minimum length of each pattern
 * @max_pkt_offset: maximum Rx packet offset
 */
struct wiphy_coalesce_support {
	int n_rules;
	int max_delay;
	int n_patterns;
	int pattern_max_len;
	int pattern_min_len;
	int max_pkt_offset;
};

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/**
 * enum wiphy_vendor_command_flags - validation flags for vendor commands
 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev
 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev
 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running
 *	(must be combined with %_WDEV or %_NETDEV)
 */
enum wiphy_vendor_command_flags {
	WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0),
	WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1),
	WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2),
};

/**
 * struct wiphy_vendor_command - vendor command definition
 * @info: vendor command identifying information, as used in nl80211
 * @flags: flags, see &enum wiphy_vendor_command_flags
 * @doit: callback for the operation, note that wdev is %NULL if the
 *	flags didn't ask for a wdev and non-%NULL otherwise; the data
 *	pointer may be %NULL if userspace provided no data at all
 */
struct wiphy_vendor_command {
	struct nl80211_vendor_cmd_info info;
	u32 flags;
	int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev,
		    const void *data, int data_len);
};

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/**
 * struct wiphy - wireless hardware description
2985 2986 2987
 * @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
2995 2996 2997 2998 2999
 * @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
3001 3002 3003
 * @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
3004
 *	four bits are variable then set it to 00-00-00-00-00-0f. The actual
3005 3006 3007 3008 3009 3010 3011 3012
 *	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.
3013 3014
 * @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
3018
 * @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
3023 3024 3025 3026 3027
 * @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
3029 3030
 * @regulatory_flags: wiphy regulatory flags, see
 *	&enum ieee80211_regulatory_flags
3031
 * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
3032 3033
 * @ext_features: extended features advertised to nl80211, see
 *	&enum nl80211_ext_feature_index.
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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
3038 3039
 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
 *	for in any given scheduled scan
3040 3041 3042
 * @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
3046 3047
 * @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
3055 3056 3057 3058
 *
 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
 *	transmitted through nl80211, points to an array indexed by interface
 *	type
3059
 *
3060 3061 3062 3063 3064 3065 3066
 * @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.
3067
 *
3068 3069 3070 3071 3072
 * @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.
 *
3073 3074
 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
 *	may request, if implemented.
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3075 3076
 *
 * @wowlan: WoWLAN support information
3077 3078 3079
 * @wowlan_config: current WoWLAN configuration; this should usually not be
 *	used since access to it is necessarily racy, use the parameter passed
 *	to the suspend() operation instead.
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3080 3081
 *
 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
3082 3083
 * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
 *	If null, then none can be over-ridden.
3084 3085
 * @vht_capa_mod_mask:  Specify what VHT capabilities can be over-ridden.
 *	If null, then none can be over-ridden.
3086 3087 3088
 *
 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
 *	supports for ACL.
3089 3090 3091 3092 3093 3094 3095 3096
 *
 * @extended_capabilities: extended capabilities supported by the driver,
 *	additional capabilities might be supported by userspace; these are
 *	the 802.11 extended capabilities ("Extended Capabilities element")
 *	and are in the same format as in the information element. See
 *	802.11-2012 8.4.2.29 for the defined fields.
 * @extended_capabilities_mask: mask of the valid values
 * @extended_capabilities_len: length of the extended capabilities
3097
 * @coalesce: packet coalescing support information
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3098 3099 3100
 *
 * @vendor_commands: array of vendor commands supported by the hardware
 * @n_vendor_commands: number of vendor commands
3101 3102
 * @vendor_events: array of vendor events supported by the hardware
 * @n_vendor_events: number of vendor events
3103 3104 3105 3106 3107
 *
 * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode
 *	(including P2P GO) or 0 to indicate no such limit is advertised. The
 *	driver is allowed to advertise a theoretical limit that it can reach in
 *	some cases, but may not always reach.
3108 3109 3110 3111 3112
 *
 * @max_num_csa_counters: Number of supported csa_counters in beacons
 *	and probe responses.  This value should be set if the driver
 *	wishes to limit the number of csa counters. Default (0) means
 *	infinite.
3113 3114 3115 3116 3117 3118
 * @max_adj_channel_rssi_comp: max offset of between the channel on which the
 *	frame was sent and the channel on which the frame was heard for which
 *	the reported rssi is still valid. If a driver is able to compensate the
 *	low rssi when a frame is heard on different channel, then it should set
 *	this variable to the maximal offset for which it can compensate.
 *	This value should be set in MHz.
J
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3119 3120 3121 3122
 */
struct wiphy {
	/* assign these fields before you register the wiphy */

3123
	/* permanent MAC address(es) */
J
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3124
	u8 perm_addr[ETH_ALEN];
3125 3126 3127
	u8 addr_mask[ETH_ALEN];

	struct mac_address *addresses;
J
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3128

3129 3130
	const struct ieee80211_txrx_stypes *mgmt_stypes;

3131 3132 3133 3134
	const struct ieee80211_iface_combination *iface_combinations;
	int n_iface_combinations;
	u16 software_iftypes;

3135 3136
	u16 n_addresses;

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3137 3138 3139
	/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
	u16 interface_modes;

3140 3141
	u16 max_acl_mac_addrs;

3142
	u32 flags, regulatory_flags, features;
3143
	u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)];
3144

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3145 3146
	u32 ap_sme_capa;

J
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3147 3148 3149 3150
	enum cfg80211_signal_type signal_type;

	int bss_priv_size;
	u8 max_scan_ssids;
3151
	u8 max_sched_scan_ssids;
3152
	u8 max_match_sets;
J
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3153
	u16 max_scan_ie_len;
3154
	u16 max_sched_scan_ie_len;
J
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3155 3156 3157 3158

	int n_cipher_suites;
	const u32 *cipher_suites;

3159 3160 3161 3162
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;
3163
	u8 coverage_class;
3164

3165
	char fw_version[ETHTOOL_FWVERS_LEN];
3166 3167
	u32 hw_version;

3168
#ifdef CONFIG_PM
3169
	const struct wiphy_wowlan_support *wowlan;
3170
	struct cfg80211_wowlan *wowlan_config;
3171
#endif
J
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3172

3173 3174
	u16 max_remain_on_channel_duration;

S
Samuel Ortiz 已提交
3175 3176
	u8 max_num_pmkids;

3177 3178
	u32 available_antennas_tx;
	u32 available_antennas_rx;
3179

3180 3181 3182 3183 3184 3185 3186
	/*
	 * 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;

3187 3188 3189
	const u8 *extended_capabilities, *extended_capabilities_mask;
	u8 extended_capabilities_len;

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3190 3191 3192 3193 3194
	/* 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. */
3195
	const void *privid;
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3196 3197 3198 3199

	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
3200 3201
	void (*reg_notifier)(struct wiphy *wiphy,
			     struct regulatory_request *request);
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3202 3203 3204

	/* fields below are read-only, assigned by cfg80211 */

3205
	const struct ieee80211_regdomain __rcu *regd;
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3206 3207 3208 3209 3210

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

3211 3212 3213
	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
	bool registered;

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3214 3215 3216
	/* dir in debugfs: ieee80211/<wiphyname> */
	struct dentry *debugfsdir;

3217
	const struct ieee80211_ht_cap *ht_capa_mod_mask;
3218
	const struct ieee80211_vht_cap *vht_capa_mod_mask;
3219

3220
	/* the network namespace this phy lives in currently */
3221
	possible_net_t _net;
3222

J
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3223 3224 3225 3226
#ifdef CONFIG_CFG80211_WEXT
	const struct iw_handler_def *wext;
#endif

3227 3228
	const struct wiphy_coalesce_support *coalesce;

J
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3229
	const struct wiphy_vendor_command *vendor_commands;
3230 3231
	const struct nl80211_vendor_cmd_info *vendor_events;
	int n_vendor_commands, n_vendor_events;
J
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3232

3233 3234
	u16 max_ap_assoc_sta;

3235
	u8 max_num_csa_counters;
3236
	u8 max_adj_channel_rssi_comp;
3237

J
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3238
	char priv[0] __aligned(NETDEV_ALIGN);
J
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3239 3240
};

3241 3242
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
E
Eric Dumazet 已提交
3243
	return read_pnet(&wiphy->_net);
3244 3245 3246 3247
}

static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
E
Eric Dumazet 已提交
3248
	write_pnet(&wiphy->_net, net);
3249 3250
}

J
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3251 3252 3253 3254
/**
 * wiphy_priv - return priv from wiphy
 *
 * @wiphy: the wiphy whose priv pointer to return
3255
 * Return: The priv of @wiphy.
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3256 3257 3258 3259 3260 3261 3262
 */
static inline void *wiphy_priv(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return &wiphy->priv;
}

3263 3264 3265 3266
/**
 * priv_to_wiphy - return the wiphy containing the priv
 *
 * @priv: a pointer previously returned by wiphy_priv
3267
 * Return: The wiphy of @priv.
3268 3269 3270 3271 3272 3273 3274
 */
static inline struct wiphy *priv_to_wiphy(void *priv)
{
	BUG_ON(!priv);
	return container_of(priv, struct wiphy, priv);
}

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3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289
/**
 * 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
3290
 * Return: The dev of @wiphy.
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3291 3292 3293 3294 3295 3296 3297 3298 3299 3300
 */
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
3301
 * Return: The name of @wiphy.
J
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3302
 */
3303
static inline const char *wiphy_name(const struct wiphy *wiphy)
J
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3304 3305 3306 3307
{
	return dev_name(&wiphy->dev);
}

3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324
/**
 * wiphy_new_nm - create a new wiphy for use with cfg80211
 *
 * @ops: The configuration operations for this device
 * @sizeof_priv: The size of the private area to allocate
 * @requested_name: Request a particular name.
 *	NULL is valid value, and means use the default phy%d naming.
 *
 * Create a new wiphy and associate the given operations with it.
 * @sizeof_priv bytes are allocated for private use.
 *
 * Return: A pointer to the new wiphy. This pointer must be
 * assigned to each netdev's ieee80211_ptr for proper operation.
 */
struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
			   const char *requested_name);

J
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3325 3326 3327 3328 3329 3330 3331 3332 3333
/**
 * 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.
 *
3334 3335
 * Return: A pointer to the new wiphy. This pointer must be
 * assigned to each netdev's ieee80211_ptr for proper operation.
J
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3336
 */
3337 3338 3339 3340 3341
static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops,
				      int sizeof_priv)
{
	return wiphy_new_nm(ops, sizeof_priv, NULL);
}
J
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3342 3343 3344 3345 3346 3347

/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
3348
 * Return: A non-negative wiphy index or a negative error code.
J
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3349
 */
3350
int wiphy_register(struct wiphy *wiphy);
J
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3351 3352 3353 3354 3355 3356 3357 3358 3359 3360

/**
 * 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.
 */
3361
void wiphy_unregister(struct wiphy *wiphy);
J
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3362 3363 3364 3365 3366 3367

/**
 * wiphy_free - free wiphy
 *
 * @wiphy: The wiphy to free
 */
3368
void wiphy_free(struct wiphy *wiphy);
J
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3369

J
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3370
/* internal structs */
3371
struct cfg80211_conn;
J
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3372
struct cfg80211_internal_bss;
J
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3373
struct cfg80211_cached_keys;
J
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3374

J
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3375
/**
3376
 * struct wireless_dev - wireless device state
J
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3377
 *
3378 3379 3380 3381 3382 3383 3384 3385 3386 3387
 * 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.
J
Johannes Berg 已提交
3388 3389 3390 3391
 *
 * @wiphy: pointer to hardware description
 * @iftype: interface type
 * @list: (private) Used to collect the interfaces
3392 3393 3394
 * @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
J
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3395
 * @current_bss: (private) Used by the internal configuration code
3396 3397
 * @chandef: (private) Used by the internal configuration code to track
 *	the user-set channel definition.
J
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3398
 * @preset_chandef: (private) Used by the internal configuration code to
3399
 *	track the channel to be used for AP later
J
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3400 3401 3402
 * @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
3403 3404
 * @mesh_id_len: (private) Used by the internal configuration code
 * @mesh_id_up_len: (private) Used by the internal configuration code
J
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3405
 * @wext: (private) Used by the internal wireless extensions compat code
3406 3407 3408 3409
 * @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
3410 3411
 * @mgmt_registrations: list of registrations for management frames
 * @mgmt_registrations_lock: lock for the list
3412 3413
 * @mtx: mutex used to lock data in this struct, may be used by drivers
 *	and some API functions require it held
3414 3415
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
3416 3417
 * @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
3418 3419
 * @cac_started: true if DFS channel availability check has been started
 * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
3420
 * @cac_time_ms: CAC time in ms
J
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3421 3422 3423 3424 3425 3426 3427
 * @ps: powersave mode is enabled
 * @ps_timeout: dynamic powersave timeout
 * @ap_unexpected_nlportid: (private) netlink port ID of application
 *	registered for unexpected class 3 frames (AP mode)
 * @conn: (private) cfg80211 software SME connection state machine data
 * @connect_keys: (private) keys to set after connection is established
 * @ibss_fixed: (private) IBSS is using fixed BSSID
3428
 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel
J
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3429 3430
 * @event_list: (private) list for internal event processing
 * @event_lock: (private) lock for event list
3431
 * @owner_nlportid: (private) owner socket port ID
J
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3432 3433 3434 3435 3436
 */
struct wireless_dev {
	struct wiphy *wiphy;
	enum nl80211_iftype iftype;

J
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3437
	/* the remainder of this struct should be private to cfg80211 */
J
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3438 3439 3440
	struct list_head list;
	struct net_device *netdev;

3441 3442
	u32 identifier;

3443 3444
	struct list_head mgmt_registrations;
	spinlock_t mgmt_registrations_lock;
3445

J
Johannes Berg 已提交
3446 3447
	struct mutex mtx;

3448 3449 3450
	bool use_4addr, p2p_started;

	u8 address[ETH_ALEN] __aligned(sizeof(u16));
3451

S
Samuel Ortiz 已提交
3452
	/* currently used for IBSS and SME - might be rearranged later */
J
Johannes Berg 已提交
3453
	u8 ssid[IEEE80211_MAX_SSID_LEN];
3454
	u8 ssid_len, mesh_id_len, mesh_id_up_len;
3455
	struct cfg80211_conn *conn;
J
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3456
	struct cfg80211_cached_keys *connect_keys;
J
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3457

J
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3458 3459 3460
	struct list_head event_list;
	spinlock_t event_lock;

J
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3461
	struct cfg80211_internal_bss *current_bss; /* associated / joined */
3462
	struct cfg80211_chan_def preset_chandef;
3463
	struct cfg80211_chan_def chandef;
3464

3465
	bool ibss_fixed;
3466
	bool ibss_dfs_possible;
3467

K
Kalle Valo 已提交
3468 3469 3470
	bool ps;
	int ps_timeout;

3471 3472
	int beacon_interval;

3473
	u32 ap_unexpected_nlportid;
3474

3475 3476
	bool cac_started;
	unsigned long cac_start_time;
3477
	unsigned int cac_time_ms;
3478

3479 3480
	u32 owner_nlportid;

J
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3481
#ifdef CONFIG_CFG80211_WEXT
J
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3482
	/* wext data */
3483
	struct {
3484 3485
		struct cfg80211_ibss_params ibss;
		struct cfg80211_connect_params connect;
J
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3486
		struct cfg80211_cached_keys *keys;
3487
		const u8 *ie;
3488
		size_t ie_len;
3489
		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
3490
		u8 ssid[IEEE80211_MAX_SSID_LEN];
3491
		s8 default_key, default_mgmt_key;
K
Kalle Valo 已提交
3492
		bool prev_bssid_valid;
3493
	} wext;
J
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3494 3495 3496
#endif
};

3497 3498 3499 3500 3501 3502 3503
static inline u8 *wdev_address(struct wireless_dev *wdev)
{
	if (wdev->netdev)
		return wdev->netdev->dev_addr;
	return wdev->address;
}

J
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3504 3505 3506 3507
/**
 * wdev_priv - return wiphy priv from wireless_dev
 *
 * @wdev: The wireless device whose wiphy's priv pointer to return
3508
 * Return: The wiphy priv of @wdev.
J
Johannes Berg 已提交
3509 3510 3511 3512 3513 3514 3515
 */
static inline void *wdev_priv(struct wireless_dev *wdev)
{
	BUG_ON(!wdev);
	return wiphy_priv(wdev->wiphy);
}

J
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3516 3517 3518 3519
/**
 * DOC: Utility functions
 *
 * cfg80211 offers a number of utility functions that can be useful.
J
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3520 3521 3522 3523
 */

/**
 * ieee80211_channel_to_frequency - convert channel number to frequency
J
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3524
 * @chan: channel number
3525
 * @band: band, necessary due to channel number overlap
3526
 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
J
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3527
 */
3528
int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
J
Johannes Berg 已提交
3529 3530 3531

/**
 * ieee80211_frequency_to_channel - convert frequency to channel number
J
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3532
 * @freq: center frequency
3533
 * Return: The corresponding channel, or 0 if the conversion failed.
J
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3534
 */
3535
int ieee80211_frequency_to_channel(int freq);
J
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3536 3537 3538 3539 3540 3541 3542 3543

/*
 * 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.
 */
3544 3545
struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
						  int freq);
J
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3546 3547
/**
 * ieee80211_get_channel - get channel struct from wiphy for specified frequency
J
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3548 3549
 * @wiphy: the struct wiphy to get the channel for
 * @freq: the center frequency of the channel
3550
 * Return: The channel struct from @wiphy at @freq.
J
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3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564
 */
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
 *
3565 3566 3567 3568
 * 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);

3574 3575 3576
/**
 * ieee80211_mandatory_rates - get mandatory rates for a given band
 * @sband: the band to look for rates in
3577
 * @scan_width: width of the control channel
3578 3579 3580 3581
 *
 * This function returns a bitmap of the mandatory rates for the given
 * band, bits are set according to the rate position in the bitrates array.
 */
3582 3583
u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
			      enum nl80211_bss_scan_width scan_width);
3584

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3585 3586 3587 3588 3589 3590 3591
/*
 * Radiotap parsing functions -- for controlled injection support
 *
 * Implemented in net/wireless/radiotap.c
 * Documentation in Documentation/networking/radiotap-headers.txt
 */

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3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607
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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3608 3609
/**
 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
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3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634
 * @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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3635 3636 3637
 */

struct ieee80211_radiotap_iterator {
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3638 3639 3640 3641 3642
	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;
3643
	__le32 *_next_bitmap;
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3644 3645

	unsigned char *this_arg;
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3646
	int this_arg_index;
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3647
	int this_arg_size;
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3648

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3649 3650 3651 3652 3653 3654
	int is_radiotap_ns;

	int _max_length;
	int _arg_index;
	uint32_t _bitmap_shifter;
	int _reset_on_ext;
J
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3655 3656
};

3657 3658 3659 3660 3661
int
ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator,
				 struct ieee80211_radiotap_header *radiotap_header,
				 int max_length,
				 const struct ieee80211_radiotap_vendor_namespaces *vns);
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3662

3663 3664
int
ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator);
J
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3665

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3666

3667 3668 3669 3670 3671 3672
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
 *
3673 3674
 * @skb: the frame
 *
3675
 * Given an skb with a raw 802.11 header at the data pointer this function
3676
 * returns the 802.11 header length.
3677
 *
3678 3679 3680
 * 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.
3681 3682 3683 3684 3685 3686
 */
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
3687
 * Return: The header length in bytes.
3688
 */
3689
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
3690

3691 3692 3693 3694
/**
 * ieee80211_get_mesh_hdrlen - get mesh extension header length
 * @meshhdr: the mesh extension header, only the flags field
 *	(first byte) will be accessed
3695
 * Return: The length of the extension header, which is always at
3696 3697 3698 3699
 * 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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3700 3701 3702 3703 3704 3705 3706 3707
/**
 * 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.
 */

3708 3709 3710 3711 3712
/**
 * 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
3713
 * Return: 0 on success. Non-zero on error.
3714
 */
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3715
int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
3716 3717 3718 3719 3720 3721 3722 3723 3724
			   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
3725
 * Return: 0 on success, or a negative error code.
3726
 */
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3727
int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
3728 3729
			     enum nl80211_iftype iftype, const u8 *bssid,
			     bool qos);
3730

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3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743
/**
 * 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.
3744
 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header.
Z
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3745 3746 3747
 */
void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
			      const u8 *addr, enum nl80211_iftype iftype,
3748 3749
			      const unsigned int extra_headroom,
			      bool has_80211_header);
Z
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3750

3751 3752 3753
/**
 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
 * @skb: the data frame
3754
 * @qos_map: Interworking QoS mapping or %NULL if not in use
3755
 * Return: The 802.1p/1d tag.
3756
 */
3757 3758
unsigned int cfg80211_classify8021d(struct sk_buff *skb,
				    struct cfg80211_qos_map *qos_map);
3759

3760 3761 3762 3763 3764 3765 3766
/**
 * cfg80211_find_ie - find information element in data
 *
 * @eid: element ID
 * @ies: data consisting of IEs
 * @len: length of data
 *
3767 3768 3769 3770 3771 3772 3773
 * 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.
3774 3775 3776
 */
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);

3777 3778 3779 3780 3781 3782 3783 3784
/**
 * 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
 *
3785 3786 3787 3788 3789 3790 3791
 * 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.
3792 3793 3794 3795
 */
const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
				  const u8 *ies, int len);

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3796 3797 3798 3799
/**
 * DOC: Regulatory enforcement infrastructure
 *
 * TODO
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3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823
 */

/**
 * 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.
3824 3825
 *
 * Return: 0 on success. -ENOMEM.
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3826
 */
3827
int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
J
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3828

3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842
/**
 * regulatory_set_wiphy_regd - set regdom info for self managed drivers
 * @wiphy: the wireless device we want to process the regulatory domain on
 * @rd: the regulatory domain informatoin to use for this wiphy
 *
 * Set the regulatory domain information for self-managed wiphys, only they
 * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more
 * information.
 *
 * Return: 0 on success. -EINVAL, -EPERM
 */
int regulatory_set_wiphy_regd(struct wiphy *wiphy,
			      struct ieee80211_regdomain *rd);

3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856
/**
 * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers
 * @wiphy: the wireless device we want to process the regulatory domain on
 * @rd: the regulatory domain information to use for this wiphy
 *
 * This functions requires the RTNL to be held and applies the new regdomain
 * synchronously to this wiphy. For more details see
 * regulatory_set_wiphy_regd().
 *
 * Return: 0 on success. -EINVAL, -EPERM
 */
int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
					struct ieee80211_regdomain *rd);

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3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867
/**
 * 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.
3868
 * Drivers using this for a wiphy should also set the wiphy flag
3869
 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy
3870
 * that called this helper.
J
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3871
 */
3872 3873
void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
				   const struct ieee80211_regdomain *regd);
J
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3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884

/**
 * 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.
 *
3885 3886 3887 3888 3889 3890 3891
 * 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.
J
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3892
 */
3893 3894
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
					       u32 center_freq);
J
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3895

3896 3897 3898 3899 3900 3901 3902 3903 3904
/**
 * reg_initiator_name - map regulatory request initiator enum to name
 * @initiator: the regulatory request initiator
 *
 * You can use this to map the regulatory request initiator enum to a
 * proper string representation.
 */
const char *reg_initiator_name(enum nl80211_reg_initiator initiator);

J
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3905 3906 3907 3908 3909
/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

3910 3911 3912 3913 3914 3915 3916 3917 3918
/**
 * 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);

3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936
/**
 * 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);

3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947
/**
 * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped
 *
 * @wiphy: the wiphy on which the scheduled scan stopped
 *
 * The driver can call this function to inform cfg80211 that the
 * scheduled scan had to be stopped, for whatever reason.  The driver
 * is then called back via the sched_scan_stop operation when done.
 * This function should be called with rtnl locked.
 */
void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy);
3948

3949
/**
3950
 * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame
3951 3952
 *
 * @wiphy: the wiphy reporting the BSS
3953
 * @rx_channel: The channel the frame was received on
3954
 * @scan_width: width of the control channel
J
Johannes Berg 已提交
3955 3956
 * @mgmt: the management frame (probe response or beacon)
 * @len: length of the management frame
J
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3957
 * @signal: the signal strength, type depends on the wiphy's signal_type
3958 3959 3960 3961
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
3962
 *
3963 3964
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
3965
 */
3966
struct cfg80211_bss * __must_check
3967
cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
3968
				struct ieee80211_channel *rx_channel,
3969 3970 3971 3972 3973
				enum nl80211_bss_scan_width scan_width,
				struct ieee80211_mgmt *mgmt, size_t len,
				s32 signal, gfp_t gfp);

static inline struct cfg80211_bss * __must_check
3974
cfg80211_inform_bss_frame(struct wiphy *wiphy,
3975
			  struct ieee80211_channel *rx_channel,
3976
			  struct ieee80211_mgmt *mgmt, size_t len,
3977 3978
			  s32 signal, gfp_t gfp)
{
3979
	return cfg80211_inform_bss_width_frame(wiphy, rx_channel,
3980 3981 3982
					       NL80211_BSS_CHAN_WIDTH_20,
					       mgmt, len, signal, gfp);
}
3983

J
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3984
/**
3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998
 * enum cfg80211_bss_frame_type - frame type that the BSS data came from
 * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is
 *	from a beacon or probe response
 * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon
 * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response
 */
enum cfg80211_bss_frame_type {
	CFG80211_BSS_FTYPE_UNKNOWN,
	CFG80211_BSS_FTYPE_BEACON,
	CFG80211_BSS_FTYPE_PRESP,
};

/**
 * cfg80211_inform_bss_width - inform cfg80211 of a new BSS
J
Johannes Berg 已提交
3999 4000
 *
 * @wiphy: the wiphy reporting the BSS
4001
 * @rx_channel: The channel the frame was received on
4002
 * @scan_width: width of the control channel
4003
 * @ftype: frame type (if known)
J
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4004
 * @bssid: the BSSID of the BSS
4005
 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
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4006 4007 4008 4009 4010 4011 4012 4013 4014
 * @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.
4015
 *
4016 4017
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
J
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4018
 */
4019
struct cfg80211_bss * __must_check
4020
cfg80211_inform_bss_width(struct wiphy *wiphy,
4021
			  struct ieee80211_channel *rx_channel,
4022
			  enum nl80211_bss_scan_width scan_width,
4023
			  enum cfg80211_bss_frame_type ftype,
4024 4025 4026 4027 4028
			  const u8 *bssid, u64 tsf, u16 capability,
			  u16 beacon_interval, const u8 *ie, size_t ielen,
			  s32 signal, gfp_t gfp);

static inline struct cfg80211_bss * __must_check
4029
cfg80211_inform_bss(struct wiphy *wiphy,
4030
		    struct ieee80211_channel *rx_channel,
4031
		    enum cfg80211_bss_frame_type ftype,
4032 4033
		    const u8 *bssid, u64 tsf, u16 capability,
		    u16 beacon_interval, const u8 *ie, size_t ielen,
4034 4035
		    s32 signal, gfp_t gfp)
{
4036
	return cfg80211_inform_bss_width(wiphy, rx_channel,
4037
					 NL80211_BSS_CHAN_WIDTH_20, ftype,
4038 4039 4040 4041
					 bssid, tsf, capability,
					 beacon_interval, ie, ielen, signal,
					 gfp);
}
4042

4043 4044 4045
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
4046
				      const u8 *ssid, size_t ssid_len,
4047 4048
				      enum ieee80211_bss_type bss_type,
				      enum ieee80211_privacy);
4049 4050 4051 4052 4053 4054
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,
4055 4056
				IEEE80211_BSS_TYPE_IBSS,
				IEEE80211_PRIVACY_ANY);
4057 4058
}

4059 4060
/**
 * cfg80211_ref_bss - reference BSS struct
4061
 * @wiphy: the wiphy this BSS struct belongs to
4062 4063 4064 4065
 * @bss: the BSS struct to reference
 *
 * Increments the refcount of the given BSS struct.
 */
4066
void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
4067 4068 4069

/**
 * cfg80211_put_bss - unref BSS struct
4070
 * @wiphy: the wiphy this BSS struct belongs to
4071 4072 4073 4074
 * @bss: the BSS struct
 *
 * Decrements the refcount of the given BSS struct.
 */
4075
void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
J
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4076

4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087
/**
 * 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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4088

4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101
static inline enum nl80211_bss_scan_width
cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_5:
		return NL80211_BSS_CHAN_WIDTH_5;
	case NL80211_CHAN_WIDTH_10:
		return NL80211_BSS_CHAN_WIDTH_10;
	default:
		return NL80211_BSS_CHAN_WIDTH_20;
	}
}

4102
/**
4103
 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
4104 4105 4106 4107
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119
 * This function is called whenever an authentication, disassociation or
 * deauthentication frame has been received and processed in station mode.
 * After being asked to authenticate via cfg80211_ops::auth() the driver must
 * call either this function or cfg80211_auth_timeout().
 * After being asked to associate via cfg80211_ops::assoc() the driver must
 * call either this function or cfg80211_auth_timeout().
 * While connected, the driver must calls this for received and processed
 * disassociation and deauthentication frames. If the frame couldn't be used
 * because it was unprotected, the driver must call the function
 * cfg80211_rx_unprot_mlme_mgmt() instead.
 *
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
4120
 */
4121
void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
4122

4123
/**
4124
 * cfg80211_auth_timeout - notification of timed out authentication
4125 4126
 * @dev: network device
 * @addr: The MAC address of the device with which the authentication timed out
4127
 *
4128 4129
 * This function may sleep. The caller must hold the corresponding wdev's
 * mutex.
4130
 */
4131
void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
4132

4133
/**
4134
 * cfg80211_rx_assoc_resp - notification of processed association response
4135
 * @dev: network device
4136 4137 4138
 * @bss: the BSS that association was requested with, ownership of the pointer
 *	moves to cfg80211 in this call
 * @buf: authentication frame (header + body)
4139
 * @len: length of the frame data
4140
 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a.
4141
 *
4142 4143 4144 4145
 * After being asked to associate via cfg80211_ops::assoc() the driver must
 * call either this function or cfg80211_auth_timeout().
 *
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
4146
 */
4147 4148
void cfg80211_rx_assoc_resp(struct net_device *dev,
			    struct cfg80211_bss *bss,
4149 4150
			    const u8 *buf, size_t len,
			    int uapsd_queues);
4151

4152
/**
4153
 * cfg80211_assoc_timeout - notification of timed out association
4154
 * @dev: network device
4155
 * @bss: The BSS entry with which association timed out.
4156
 *
4157
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
4158
 */
4159
void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss);
4160

4161
/**
4162
 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
4163
 * @dev: network device
4164
 * @buf: 802.11 frame (header + body)
4165 4166 4167
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
4168
 * station mode. This includes both received deauthentication frames and
4169 4170
 * locally generated ones. This function may sleep. The caller must hold the
 * corresponding wdev's mutex.
4171
 */
4172
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
4173

4174
/**
4175
 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
4176 4177 4178 4179
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
4180 4181
 * This function is called whenever a received deauthentication or dissassoc
 * frame has been dropped in station mode because of MFP being used but the
4182 4183
 * frame was not protected. This function may sleep.
 */
4184 4185
void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev,
				  const u8 *buf, size_t len);
4186

4187 4188 4189 4190 4191
/**
 * 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
4192
 * @key_id: Key identifier (0..3). Can be -1 if missing.
4193
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
4194
 * @gfp: allocation flags
4195 4196 4197 4198 4199 4200 4201
 *
 * 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,
4202
				  const u8 *tsc, gfp_t gfp);
4203

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Johannes Berg 已提交
4204 4205 4206 4207 4208
/**
 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
 *
 * @dev: network device
 * @bssid: the BSSID of the IBSS joined
4209
 * @channel: the channel of the IBSS joined
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Johannes Berg 已提交
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 * @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.
 */
4219 4220
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
			  struct ieee80211_channel *channel, gfp_t gfp);
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Johannes Berg 已提交
4221

4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237
/**
 * 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);

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Johannes Berg 已提交
4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251
/**
 * 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
4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270
/**
 * 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);

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Johannes Berg 已提交
4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295
/**
 * DOC: Vendor commands
 *
 * Occasionally, there are special protocol or firmware features that
 * can't be implemented very openly. For this and similar cases, the
 * vendor command functionality allows implementing the features with
 * (typically closed-source) userspace and firmware, using nl80211 as
 * the configuration mechanism.
 *
 * A driver supporting vendor commands must register them as an array
 * in struct wiphy, with handlers for each one, each command has an
 * OUI and sub command ID to identify it.
 *
 * Note that this feature should not be (ab)used to implement protocol
 * features that could openly be shared across drivers. In particular,
 * it must never be required to use vendor commands to implement any
 * "normal" functionality that higher-level userspace like connection
 * managers etc. need.
 */

struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
					   enum nl80211_commands cmd,
					   enum nl80211_attrs attr,
					   int approxlen);

4296
struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
4297
					   struct wireless_dev *wdev,
4298 4299 4300 4301 4302 4303 4304
					   enum nl80211_commands cmd,
					   enum nl80211_attrs attr,
					   int vendor_event_idx,
					   int approxlen, gfp_t gfp);

void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp);

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Johannes Berg 已提交
4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348
/**
 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply
 * @wiphy: the wiphy
 * @approxlen: an upper bound of the length of the data that will
 *	be put into the skb
 *
 * This function allocates and pre-fills an skb for a reply to
 * a vendor command. Since it is intended for a reply, calling
 * it outside of a vendor command's doit() operation is invalid.
 *
 * The returned skb is pre-filled with some identifying data in
 * a way that any data that is put into the skb (with skb_put(),
 * nla_put() or similar) will end up being within the
 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done
 * with the skb is adding data for the corresponding userspace tool
 * which can then read that data out of the vendor data attribute.
 * You must not modify the skb in any other way.
 *
 * When done, call cfg80211_vendor_cmd_reply() with the skb and return
 * its error code as the result of the doit() operation.
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
 */
static inline struct sk_buff *
cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
{
	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR,
					  NL80211_ATTR_VENDOR_DATA, approxlen);
}

/**
 * cfg80211_vendor_cmd_reply - send the reply skb
 * @skb: The skb, must have been allocated with
 *	cfg80211_vendor_cmd_alloc_reply_skb()
 *
 * Since calling this function will usually be the last thing
 * before returning from the vendor command doit() you should
 * return the error code.  Note that this function consumes the
 * skb regardless of the return value.
 *
 * Return: An error code or 0 on success.
 */
int cfg80211_vendor_cmd_reply(struct sk_buff *skb);

4349 4350 4351
/**
 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb
 * @wiphy: the wiphy
4352
 * @wdev: the wireless device
4353 4354 4355 4356 4357 4358 4359 4360
 * @event_idx: index of the vendor event in the wiphy's vendor_events
 * @approxlen: an upper bound of the length of the data that will
 *	be put into the skb
 * @gfp: allocation flags
 *
 * This function allocates and pre-fills an skb for an event on the
 * vendor-specific multicast group.
 *
4361 4362 4363 4364
 * If wdev != NULL, both the ifindex and identifier of the specified
 * wireless device are added to the event message before the vendor data
 * attribute.
 *
4365 4366 4367 4368 4369 4370
 * When done filling the skb, call cfg80211_vendor_event() with the
 * skb to send the event.
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
 */
static inline struct sk_buff *
4371 4372
cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev,
			     int approxlen, int event_idx, gfp_t gfp)
4373
{
4374
	return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR,
4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391
					  NL80211_ATTR_VENDOR_DATA,
					  event_idx, approxlen, gfp);
}

/**
 * cfg80211_vendor_event - send the event
 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc()
 * @gfp: allocation flags
 *
 * This function sends the given @skb, which must have been allocated
 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it.
 */
static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp)
{
	__cfg80211_send_event_skb(skb, gfp);
}

4392
#ifdef CONFIG_NL80211_TESTMODE
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Johannes Berg 已提交
4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403
/**
 * 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.
 */

4404 4405 4406 4407 4408 4409 4410 4411 4412 4413
/**
 * 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.
 *
4414 4415 4416 4417 4418 4419 4420
 * 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.
4421 4422 4423
 *
 * When done, call cfg80211_testmode_reply() with the skb and return
 * its error code as the result of the @testmode_cmd operation.
4424 4425
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
4426
 */
J
Johannes Berg 已提交
4427 4428 4429 4430 4431 4432
static inline struct sk_buff *
cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
{
	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE,
					  NL80211_ATTR_TESTDATA, approxlen);
}
4433 4434 4435 4436 4437 4438

/**
 * cfg80211_testmode_reply - send the reply skb
 * @skb: The skb, must have been allocated with
 *	cfg80211_testmode_alloc_reply_skb()
 *
4439 4440 4441 4442 4443 4444
 * 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.
4445
 */
J
Johannes Berg 已提交
4446 4447 4448 4449
static inline int cfg80211_testmode_reply(struct sk_buff *skb)
{
	return cfg80211_vendor_cmd_reply(skb);
}
4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460

/**
 * 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.
 *
4461 4462 4463 4464 4465
 * 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.
4466 4467 4468
 *
 * When done filling the skb, call cfg80211_testmode_event() with the
 * skb to send the event.
4469 4470
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
4471
 */
4472 4473 4474
static inline struct sk_buff *
cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp)
{
4475
	return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE,
4476 4477 4478
					  NL80211_ATTR_TESTDATA, -1,
					  approxlen, gfp);
}
4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489

/**
 * 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.
 */
4490 4491 4492 4493
static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
{
	__cfg80211_send_event_skb(skb, gfp);
}
4494 4495

#define CFG80211_TESTMODE_CMD(cmd)	.testmode_cmd = (cmd),
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Wey-Yi Guy 已提交
4496
#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
4497 4498
#else
#define CFG80211_TESTMODE_CMD(cmd)
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Wey-Yi Guy 已提交
4499
#define CFG80211_TESTMODE_DUMP(cmd)
4500 4501
#endif

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Samuel Ortiz 已提交
4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527
/**
 * 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
4528
 * @channel: the channel of the new AP
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Samuel Ortiz 已提交
4529 4530 4531 4532 4533 4534 4535 4536 4537 4538
 * @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.
 */
4539 4540 4541
void cfg80211_roamed(struct net_device *dev,
		     struct ieee80211_channel *channel,
		     const u8 *bssid,
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Samuel Ortiz 已提交
4542 4543 4544
		     const u8 *req_ie, size_t req_ie_len,
		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570
/**
 * cfg80211_roamed_bss - notify cfg80211 of roaming
 *
 * @dev: network device
 * @bss: entry of bss to which STA got roamed
 * @req_ie: association request IEs (maybe be %NULL)
 * @req_ie_len: association request IEs length
 * @resp_ie: association response IEs (may be %NULL)
 * @resp_ie_len: assoc response IEs length
 * @gfp: allocation flags
 *
 * This is just a wrapper to notify cfg80211 of roaming event with driver
 * passing bss to avoid a race in timeout of the bss entry. It should be
 * called by the underlying driver whenever it roamed from one AP to another
 * while connected. Drivers which have roaming implemented in firmware
 * may use this function to avoid a race in bss entry timeout where the bss
 * entry of the new AP is seen in the driver, but gets timed out by the time
 * it is accessed in __cfg80211_roamed() due to delay in scheduling
 * rdev->event_work. In case of any failures, the reference is released
 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise,
 * it will be released while diconneting from the current bss.
 */
void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss,
			 const u8 *req_ie, size_t req_ie_len,
			 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

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Samuel Ortiz 已提交
4571 4572 4573 4574 4575 4576 4577
/**
 * 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
4578
 * @locally_generated: disconnection was requested locally
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Samuel Ortiz 已提交
4579 4580 4581 4582 4583 4584
 * @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,
4585 4586
			   const u8 *ie, size_t ie_len,
			   bool locally_generated, gfp_t gfp);
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Samuel Ortiz 已提交
4587

4588 4589
/**
 * cfg80211_ready_on_channel - notification of remain_on_channel start
4590
 * @wdev: wireless device
4591 4592 4593 4594 4595 4596
 * @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
 */
4597
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
4598 4599 4600 4601 4602
			       struct ieee80211_channel *chan,
			       unsigned int duration, gfp_t gfp);

/**
 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
4603
 * @wdev: wireless device
4604 4605 4606 4607
 * @cookie: the request cookie
 * @chan: The current channel (from remain_on_channel request)
 * @gfp: allocation flags
 */
4608
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
4609 4610
					struct ieee80211_channel *chan,
					gfp_t gfp);
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Samuel Ortiz 已提交
4611

4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623

/**
 * 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);

4624 4625 4626 4627 4628 4629 4630 4631 4632 4633
/**
 * cfg80211_del_sta_sinfo - notify userspace about deletion of a station
 * @dev: the netdev
 * @mac_addr: the station's address
 * @sinfo: the station information/statistics
 * @gfp: allocation flags
 */
void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
			    struct station_info *sinfo, gfp_t gfp);

4634 4635 4636 4637 4638 4639 4640
/**
 * cfg80211_del_sta - notify userspace about deletion of a station
 *
 * @dev: the netdev
 * @mac_addr: the station's address
 * @gfp: allocation flags
 */
4641 4642 4643 4644 4645
static inline void cfg80211_del_sta(struct net_device *dev,
				    const u8 *mac_addr, gfp_t gfp)
{
	cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp);
}
4646

4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665
/**
 * 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);

4666
/**
4667
 * cfg80211_rx_mgmt - notification of received, unprocessed management frame
4668
 * @wdev: wireless device receiving the frame
4669
 * @freq: Frequency on which the frame was received in MHz
4670
 * @sig_dbm: signal strength in mBm, or 0 if unknown
4671
 * @buf: Management frame (header + body)
4672
 * @len: length of the frame data
4673
 * @flags: flags, as defined in enum nl80211_rxmgmt_flags
4674
 *
4675 4676 4677 4678
 * 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.
4679 4680 4681
 * 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.
4682
 */
4683
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
4684
		      const u8 *buf, size_t len, u32 flags);
4685 4686

/**
4687
 * cfg80211_mgmt_tx_status - notification of TX status for management frame
4688
 * @wdev: wireless device receiving the frame
4689 4690
 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
 * @buf: Management frame (header + body)
4691 4692 4693 4694
 * @len: length of the frame data
 * @ack: Whether frame was acknowledged
 * @gfp: context flags
 *
4695 4696
 * 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
4697 4698
 * transmission attempt.
 */
4699
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
4700
			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
4701

4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715

/**
 * 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);

4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727
/**
 * 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);

4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742
/**
 * 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);

4743 4744 4745 4746 4747 4748 4749 4750 4751
/**
 * cfg80211_cqm_beacon_loss_notify - beacon loss event
 * @dev: network device
 * @gfp: context flags
 *
 * Notify userspace about beacon loss from the connected AP.
 */
void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp);

4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778
/**
 * cfg80211_radar_event - radar detection event
 * @wiphy: the wiphy
 * @chandef: chandef for the current channel
 * @gfp: context flags
 *
 * This function is called when a radar is detected on the current chanenl.
 */
void cfg80211_radar_event(struct wiphy *wiphy,
			  struct cfg80211_chan_def *chandef, gfp_t gfp);

/**
 * cfg80211_cac_event - Channel availability check (CAC) event
 * @netdev: network device
 * @chandef: chandef for the current channel
 * @event: type of event
 * @gfp: context flags
 *
 * This function is called when a Channel availability check (CAC) is finished
 * or aborted. This must be called to notify the completion of a CAC process,
 * also by full-MAC drivers.
 */
void cfg80211_cac_event(struct net_device *netdev,
			const struct cfg80211_chan_def *chandef,
			enum nl80211_radar_event event, gfp_t gfp);


4779 4780 4781 4782 4783
/**
 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
 * @dev: network device
 * @bssid: BSSID of AP (to avoid races)
 * @replay_ctr: new replay counter
J
Johannes Berg 已提交
4784
 * @gfp: allocation flags
4785 4786 4787 4788
 */
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
			       const u8 *replay_ctr, gfp_t gfp);

4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799
/**
 * 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);

4800 4801 4802 4803 4804 4805 4806 4807 4808
/**
 * 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.
4809
 * Return: %true if the frame was passed to userspace (or this failed
4810 4811 4812 4813 4814
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_spurious_frame(struct net_device *dev,
				const u8 *addr, gfp_t gfp);

4815 4816 4817 4818 4819 4820 4821 4822 4823 4824
/**
 * 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.
4825
 * Return: %true if the frame was passed to userspace (or this failed
4826 4827 4828 4829 4830
 * 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
4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841
/**
 * 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);

4842 4843 4844 4845 4846 4847
/**
 * 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
4848
 * @sig_dbm: signal strength in mBm, or 0 if unknown
4849 4850 4851 4852 4853 4854 4855
 *
 * 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,
4856
				 int freq, int sig_dbm);
4857

4858
/**
4859
 * cfg80211_reg_can_beacon - check if beaconing is allowed
4860
 * @wiphy: the wiphy
4861
 * @chandef: the channel definition
4862
 * @iftype: interface type
4863
 *
4864 4865
 * 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.)
4866
 */
4867
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
4868 4869
			     struct cfg80211_chan_def *chandef,
			     enum nl80211_iftype iftype);
4870

4871 4872 4873
/*
 * cfg80211_ch_switch_notify - update wdev channel and notify userspace
 * @dev: the device which switched channels
4874
 * @chandef: the new channel definition
4875
 *
4876 4877
 * Caller must acquire wdev_lock, therefore must only be called from sleepable
 * driver context!
4878
 */
4879 4880
void cfg80211_ch_switch_notify(struct net_device *dev,
			       struct cfg80211_chan_def *chandef);
4881

4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895
/*
 * cfg80211_ch_switch_started_notify - notify channel switch start
 * @dev: the device on which the channel switch started
 * @chandef: the future channel definition
 * @count: the number of TBTTs until the channel switch happens
 *
 * Inform the userspace about the channel switch that has just
 * started, so that it can take appropriate actions (eg. starting
 * channel switch on other vifs), if necessary.
 */
void cfg80211_ch_switch_started_notify(struct net_device *dev,
				       struct cfg80211_chan_def *chandef,
				       u8 count);

4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906
/**
 * ieee80211_operating_class_to_band - convert operating class to band
 *
 * @operating_class: the operating class to convert
 * @band: band pointer to fill
 *
 * Returns %true if the conversion was successful, %false otherwise.
 */
bool ieee80211_operating_class_to_band(u8 operating_class,
				       enum ieee80211_band *band);

4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917
/**
 * ieee80211_chandef_to_operating_class - convert chandef to operation class
 *
 * @chandef: the chandef to convert
 * @op_class: a pointer to the resulting operating class
 *
 * Returns %true if the conversion was successful, %false otherwise.
 */
bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef,
					  u8 *op_class);

4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936
/*
 * 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);

4937 4938 4939 4940 4941 4942
/*
 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
 * @rate: given rate_info to calculate bitrate from
 *
 * return 0 if MCS index >= 32
 */
4943
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
4944

4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960
/**
 * 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);

4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984
/**
 * struct cfg80211_ft_event - FT Information Elements
 * @ies: FT IEs
 * @ies_len: length of the FT IE in bytes
 * @target_ap: target AP's MAC address
 * @ric_ies: RIC IE
 * @ric_ies_len: length of the RIC IE in bytes
 */
struct cfg80211_ft_event_params {
	const u8 *ies;
	size_t ies_len;
	const u8 *target_ap;
	const u8 *ric_ies;
	size_t ric_ies_len;
};

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

4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996
/**
 * 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.
 *
4997 4998 4999
 * 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).
5000
 */
5001 5002 5003
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
			  enum ieee80211_p2p_attr_id attr,
			  u8 *buf, unsigned int bufsize);
5004

5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062
/**
 * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC)
 * @ies: the IE buffer
 * @ielen: the length of the IE buffer
 * @ids: an array with element IDs that are allowed before
 *	the split
 * @n_ids: the size of the element ID array
 * @after_ric: array IE types that come after the RIC element
 * @n_after_ric: size of the @after_ric array
 * @offset: offset where to start splitting in the buffer
 *
 * This function splits an IE buffer by updating the @offset
 * variable to point to the location where the buffer should be
 * split.
 *
 * It assumes that the given IE buffer is well-formed, this
 * has to be guaranteed by the caller!
 *
 * It also assumes that the IEs in the buffer are ordered
 * correctly, if not the result of using this function will not
 * be ordered correctly either, i.e. it does no reordering.
 *
 * The function returns the offset where the next part of the
 * buffer starts, which may be @ielen if the entire (remainder)
 * of the buffer should be used.
 */
size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen,
			      const u8 *ids, int n_ids,
			      const u8 *after_ric, int n_after_ric,
			      size_t offset);

/**
 * ieee80211_ie_split - split an IE buffer according to ordering
 * @ies: the IE buffer
 * @ielen: the length of the IE buffer
 * @ids: an array with element IDs that are allowed before
 *	the split
 * @n_ids: the size of the element ID array
 * @offset: offset where to start splitting in the buffer
 *
 * This function splits an IE buffer by updating the @offset
 * variable to point to the location where the buffer should be
 * split.
 *
 * It assumes that the given IE buffer is well-formed, this
 * has to be guaranteed by the caller!
 *
 * It also assumes that the IEs in the buffer are ordered
 * correctly, if not the result of using this function will not
 * be ordered correctly either, i.e. it does no reordering.
 *
 * The function returns the offset where the next part of the
 * buffer starts, which may be @ielen if the entire (remainder)
 * of the buffer should be used.
 */
size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
			  const u8 *ids, int n_ids, size_t offset);

5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077
/**
 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN
 * @wdev: the wireless device reporting the wakeup
 * @wakeup: the wakeup report
 * @gfp: allocation flags
 *
 * This function reports that the given device woke up. If it
 * caused the wakeup, report the reason(s), otherwise you may
 * pass %NULL as the @wakeup parameter to advertise that something
 * else caused the wakeup.
 */
void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
				   struct cfg80211_wowlan_wakeup *wakeup,
				   gfp_t gfp);

5078 5079 5080 5081
/**
 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
 *
 * @wdev: the wireless device for which critical protocol is stopped.
5082
 * @gfp: allocation flags
5083 5084 5085 5086 5087 5088 5089
 *
 * This function can be called by the driver to indicate it has reverted
 * operation back to normal. One reason could be that the duration given
 * by .crit_proto_start() has expired.
 */
void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp);

5090 5091 5092 5093 5094 5095 5096 5097
/**
 * ieee80211_get_num_supported_channels - get number of channels device has
 * @wiphy: the wiphy
 *
 * Return: the number of channels supported by the device.
 */
unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy);

5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119
/**
 * cfg80211_check_combinations - check interface combinations
 *
 * @wiphy: the wiphy
 * @num_different_channels: the number of different channels we want
 *	to use for verification
 * @radar_detect: a bitmap where each bit corresponds to a channel
 *	width where radar detection is needed, as in the definition of
 *	&struct ieee80211_iface_combination.@radar_detect_widths
 * @iftype_num: array with the numbers of interfaces of each interface
 *	type.  The index is the interface type as specified in &enum
 *	nl80211_iftype.
 *
 * This function can be called by the driver to check whether a
 * combination of interfaces and their types are allowed according to
 * the interface combinations.
 */
int cfg80211_check_combinations(struct wiphy *wiphy,
				const int num_different_channels,
				const u8 radar_detect,
				const int iftype_num[NUM_NL80211_IFTYPES]);

5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146
/**
 * cfg80211_iter_combinations - iterate over matching combinations
 *
 * @wiphy: the wiphy
 * @num_different_channels: the number of different channels we want
 *	to use for verification
 * @radar_detect: a bitmap where each bit corresponds to a channel
 *	width where radar detection is needed, as in the definition of
 *	&struct ieee80211_iface_combination.@radar_detect_widths
 * @iftype_num: array with the numbers of interfaces of each interface
 *	type.  The index is the interface type as specified in &enum
 *	nl80211_iftype.
 * @iter: function to call for each matching combination
 * @data: pointer to pass to iter function
 *
 * This function can be called by the driver to check what possible
 * combinations it fits in at a given moment, e.g. for channel switching
 * purposes.
 */
int cfg80211_iter_combinations(struct wiphy *wiphy,
			       const int num_different_channels,
			       const u8 radar_detect,
			       const int iftype_num[NUM_NL80211_IFTYPES],
			       void (*iter)(const struct ieee80211_iface_combination *c,
					    void *data),
			       void *data);

5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161
/*
 * cfg80211_stop_iface - trigger interface disconnection
 *
 * @wiphy: the wiphy
 * @wdev: wireless device
 * @gfp: context flags
 *
 * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA
 * disconnected.
 *
 * Note: This doesn't need any locks and is asynchronous.
 */
void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev,
			 gfp_t gfp);

5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175
/**
 * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy
 * @wiphy: the wiphy to shut down
 *
 * This function shuts down all interfaces belonging to this wiphy by
 * calling dev_close() (and treating non-netdev interfaces as needed).
 * It shouldn't really be used unless there are some fatal device errors
 * that really can't be recovered in any other way.
 *
 * Callers must hold the RTNL and be able to deal with callbacks into
 * the driver while the function is running.
 */
void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy);

5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211
/**
 * wiphy_ext_feature_set - set the extended feature flag
 *
 * @wiphy: the wiphy to modify.
 * @ftidx: extended feature bit index.
 *
 * The extended features are flagged in multiple bytes (see
 * &struct wiphy.@ext_features)
 */
static inline void wiphy_ext_feature_set(struct wiphy *wiphy,
					 enum nl80211_ext_feature_index ftidx)
{
	u8 *ft_byte;

	ft_byte = &wiphy->ext_features[ftidx / 8];
	*ft_byte |= BIT(ftidx % 8);
}

/**
 * wiphy_ext_feature_isset - check the extended feature flag
 *
 * @wiphy: the wiphy to modify.
 * @ftidx: extended feature bit index.
 *
 * The extended features are flagged in multiple bytes (see
 * &struct wiphy.@ext_features)
 */
static inline bool
wiphy_ext_feature_isset(struct wiphy *wiphy,
			enum nl80211_ext_feature_index ftidx)
{
	u8 ft_byte;

	ft_byte = wiphy->ext_features[ftidx / 8];
	return (ft_byte & BIT(ftidx % 8)) != 0;
}
5212 5213 5214 5215

/* ethtool helper */
void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info);

5216 5217 5218 5219 5220
/* Logging, debugging and troubleshooting/diagnostic helpers. */

/* wiphy_printk helpers, similar to dev_printk */

#define wiphy_printk(level, wiphy, format, args...)		\
5221
	dev_printk(level, &(wiphy)->dev, format, ##args)
5222
#define wiphy_emerg(wiphy, format, args...)			\
5223
	dev_emerg(&(wiphy)->dev, format, ##args)
5224
#define wiphy_alert(wiphy, format, args...)			\
5225
	dev_alert(&(wiphy)->dev, format, ##args)
5226
#define wiphy_crit(wiphy, format, args...)			\
5227
	dev_crit(&(wiphy)->dev, format, ##args)
5228
#define wiphy_err(wiphy, format, args...)			\
5229
	dev_err(&(wiphy)->dev, format, ##args)
5230
#define wiphy_warn(wiphy, format, args...)			\
5231
	dev_warn(&(wiphy)->dev, format, ##args)
5232
#define wiphy_notice(wiphy, format, args...)			\
5233
	dev_notice(&(wiphy)->dev, format, ##args)
5234
#define wiphy_info(wiphy, format, args...)			\
5235
	dev_info(&(wiphy)->dev, format, ##args)
5236

5237
#define wiphy_debug(wiphy, format, args...)			\
5238
	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
5239

5240
#define wiphy_dbg(wiphy, format, args...)			\
5241
	dev_dbg(&(wiphy)->dev, format, ##args)
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#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);	\
5250
	0;								\
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})
#endif

/*
 * wiphy_WARN() acts like wiphy_printk(), but with the key difference
 * of using a WARN/WARN_ON to get the message out, including the
 * file/line information and a backtrace.
 */
#define wiphy_WARN(wiphy, format, args...)			\
	WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args);

5262
#endif /* __NET_CFG80211_H */