cfg80211.h 179.1 KB
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#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
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/*
 * 802.11 device and configuration interface
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 * 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
 * @IEEE80211_CHAN_GO_CONCURRENT: see %NL80211_FREQUENCY_ATTR_GO_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,
	IEEE80211_CHAN_GO_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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/**
 * 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_CHANNEL_TIME: channel active time (in ms) was filled in
 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in
 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in
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 *
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 * Used by the driver to indicate which info in &struct survey_info
 * it has filled in during the get_survey().
 */
enum survey_info_flags {
	SURVEY_INFO_NOISE_DBM = 1<<0,
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	SURVEY_INFO_IN_USE = 1<<1,
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	SURVEY_INFO_CHANNEL_TIME = 1<<2,
	SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3,
	SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4,
	SURVEY_INFO_CHANNEL_TIME_RX = 1<<5,
	SURVEY_INFO_CHANNEL_TIME_TX = 1<<6,
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};

/**
 * struct survey_info - channel survey response
 *
 * @channel: the channel this survey record reports, mandatory
 * @filled: bitflag of flags from &enum survey_info_flags
 * @noise: channel noise in dBm. This and all following fields are
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 *	optional
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 * @channel_time: amount of time in ms the radio spent on the channel
 * @channel_time_busy: amount of time the primary channel was sensed busy
 * @channel_time_ext_busy: amount of time the extension channel was sensed busy
 * @channel_time_rx: amount of time the radio spent receiving data
 * @channel_time_tx: amount of time the radio spent transmitting data
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 *
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 * Used by dump_survey() to report back per-channel survey information.
 *
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 * This structure can later be expanded with things like
 * channel duty cycle etc.
 */
struct survey_info {
	struct ieee80211_channel *channel;
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	u64 channel_time;
	u64 channel_time_busy;
	u64 channel_time_ext_busy;
	u64 channel_time_rx;
	u64 channel_time_tx;
567 568 569 570
	u32 filled;
	s8 noise;
};

571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600
/**
 * 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;
};

601
/**
602
 * struct cfg80211_beacon_data - beacon data
603
 * @head: head portion of beacon (before TIM IE)
604
 *	or %NULL if not changed
605
 * @tail: tail portion of beacon (after TIM IE)
606
 *	or %NULL if not changed
607 608
 * @head_len: length of @head
 * @tail_len: length of @tail
609 610 611 612 613 614 615 616
 * @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
617 618
 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
619
 */
620 621 622 623 624 625 626 627 628 629 630 631 632 633
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;
};

634 635 636 637
struct mac_address {
	u8 addr[ETH_ALEN];
};

638 639 640 641
/**
 * 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
643 644 645 646 647 648 649 650 651 652 653
 * @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[];
};

654 655 656 657 658
/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
659
 * @chandef: defines the channel to use
660 661 662 663 664 665 666 667 668 669
 * @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)
670
 * @smps_mode: SMPS mode
671
 * @inactivity_timeout: time in seconds to determine station's inactivity.
672 673
 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
674 675
 * @acl: ACL configuration used by the drivers which has support for
 *	MAC address based access control
676 677
 */
struct cfg80211_ap_settings {
678
	struct cfg80211_chan_def chandef;
679

680 681 682
	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
683 684 685
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
686 687 688
	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
689
	enum nl80211_smps_mode smps_mode;
690
	int inactivity_timeout;
691 692
	u8 p2p_ctwindow;
	bool p2p_opp_ps;
693
	const struct cfg80211_acl_data *acl;
694 695
};

696 697 698 699 700 701 702
/**
 * 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
703 704 705 706
 * @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
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 * @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;
715 716 717 718
	const u16 *counter_offsets_beacon;
	const u16 *counter_offsets_presp;
	unsigned int n_counter_offsets_beacon;
	unsigned int n_counter_offsets_presp;
719 720 721 722 723 724
	struct cfg80211_beacon_data beacon_after;
	bool radar_required;
	bool block_tx;
	u8 count;
};

725 726 727
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
728
 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
729
 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
730 731 732 733 734 735
 *
 * 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),
736
	STATION_PARAM_APPLY_CAPABILITY = BIT(1),
737
	STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
738 739
};

740 741 742 743 744 745 746 747 748
/**
 * 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
749 750 751 752
 * @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_...))
753 754
 * @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
756
 * @plink_state: set the peer link state for a station
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 * @ht_capa: HT capabilities of station
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 * @vht_capa: VHT capabilities of station
759 760 761 762
 * @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
766 767
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
768 769 770
 * @capability: station capability
 * @ext_capab: extended capabilities of the station
 * @ext_capab_len: number of extended capabilities
771 772 773 774
 * @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
775 776
 * @opmode_notif: operating mode field from Operating Mode Notification
 * @opmode_notif_used: information if operating mode field is used
777 778
 */
struct station_parameters {
779
	const u8 *supported_rates;
780
	struct net_device *vlan;
781
	u32 sta_flags_mask, sta_flags_set;
782
	u32 sta_modify_mask;
783 784 785
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
786
	u8 plink_action;
787
	u8 plink_state;
788 789
	const struct ieee80211_ht_cap *ht_capa;
	const struct ieee80211_vht_cap *vht_capa;
790 791
	u8 uapsd_queues;
	u8 max_sp;
792
	enum nl80211_mesh_power_mode local_pm;
793
	u16 capability;
794
	const u8 *ext_capab;
795
	u8 ext_capab_len;
796 797 798 799
	const u8 *supported_channels;
	u8 supported_channels_len;
	const u8 *supported_oper_classes;
	u8 supported_oper_classes_len;
800 801
	u8 opmode_notif;
	bool opmode_notif_used;
802 803
};

804 805 806 807 808 809
/**
 * 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
810 811 812
 * @subtype: Management frame subtype to use for indicating removal
 *	(10 = Disassociation, 12 = Deauthentication)
 * @reason_code: Reason code for the Disassociation/Deauthentication frame
813 814 815
 */
struct station_del_parameters {
	const u8 *mac;
816 817
	u8 subtype;
	u16 reason_code;
818 819
};

820 821 822 823 824 825 826 827 828 829 830 831 832
/**
 * 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)
833 834
 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
835 836 837 838 839 840 841 842
 */
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,
843 844
	CFG80211_STA_MESH_PEER_KERNEL,
	CFG80211_STA_MESH_PEER_USER,
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};

/**
 * 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);

863
/**
864
 * enum station_info_flags - station information flags
865
 *
866 867
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
868
 *
869 870 871
 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 * @STATION_INFO_RX_BYTES: @rx_bytes filled
 * @STATION_INFO_TX_BYTES: @tx_bytes filled
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 * @STATION_INFO_RX_BYTES64: @rx_bytes filled with 64-bit value
 * @STATION_INFO_TX_BYTES64: @tx_bytes filled with 64-bit value
874 875 876
 * @STATION_INFO_LLID: @llid filled
 * @STATION_INFO_PLID: @plid filled
 * @STATION_INFO_PLINK_STATE: @plink_state filled
877
 * @STATION_INFO_SIGNAL: @signal filled
878
 * @STATION_INFO_TX_BITRATE: @txrate fields are filled
879
 *	(tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
880 881
 * @STATION_INFO_RX_PACKETS: @rx_packets filled with 32-bit value
 * @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value
882 883
 * @STATION_INFO_TX_RETRIES: @tx_retries filled
 * @STATION_INFO_TX_FAILED: @tx_failed filled
884
 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
885
 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
886
 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
887
 * @STATION_INFO_BSS_PARAM: @bss_param filled
888
 * @STATION_INFO_CONNECTED_TIME: @connected_time filled
889
 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
890
 * @STATION_INFO_STA_FLAGS: @sta_flags filled
891
 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
892
 * @STATION_INFO_T_OFFSET: @t_offset filled
893 894 895
 * @STATION_INFO_LOCAL_PM: @local_pm filled
 * @STATION_INFO_PEER_PM: @peer_pm filled
 * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
896 897
 * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
 * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled
898
 * @STATION_INFO_EXPECTED_THROUGHPUT: @expected_throughput filled
899
 */
900
enum station_info_flags {
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929
	STATION_INFO_INACTIVE_TIME		= BIT(0),
	STATION_INFO_RX_BYTES			= BIT(1),
	STATION_INFO_TX_BYTES			= BIT(2),
	STATION_INFO_LLID			= BIT(3),
	STATION_INFO_PLID			= BIT(4),
	STATION_INFO_PLINK_STATE		= BIT(5),
	STATION_INFO_SIGNAL			= BIT(6),
	STATION_INFO_TX_BITRATE			= BIT(7),
	STATION_INFO_RX_PACKETS			= BIT(8),
	STATION_INFO_TX_PACKETS			= BIT(9),
	STATION_INFO_TX_RETRIES			= BIT(10),
	STATION_INFO_TX_FAILED			= BIT(11),
	STATION_INFO_RX_DROP_MISC		= BIT(12),
	STATION_INFO_SIGNAL_AVG			= BIT(13),
	STATION_INFO_RX_BITRATE			= BIT(14),
	STATION_INFO_BSS_PARAM			= BIT(15),
	STATION_INFO_CONNECTED_TIME		= BIT(16),
	STATION_INFO_ASSOC_REQ_IES		= BIT(17),
	STATION_INFO_STA_FLAGS			= BIT(18),
	STATION_INFO_BEACON_LOSS_COUNT		= BIT(19),
	STATION_INFO_T_OFFSET			= BIT(20),
	STATION_INFO_LOCAL_PM			= BIT(21),
	STATION_INFO_PEER_PM			= BIT(22),
	STATION_INFO_NONPEER_PM			= BIT(23),
	STATION_INFO_RX_BYTES64			= BIT(24),
	STATION_INFO_TX_BYTES64			= BIT(25),
	STATION_INFO_CHAIN_SIGNAL		= BIT(26),
	STATION_INFO_CHAIN_SIGNAL_AVG		= BIT(27),
	STATION_INFO_EXPECTED_THROUGHPUT	= BIT(28),
930 931 932 933 934 935 936 937
};

/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
938 939 940 941 942 943
 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
 * @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
 * @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
 * @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
944
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
945
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
946 947
 */
enum rate_info_flags {
948 949 950 951 952 953 954 955
	RATE_INFO_FLAGS_MCS			= BIT(0),
	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
	RATE_INFO_FLAGS_40_MHZ_WIDTH		= BIT(2),
	RATE_INFO_FLAGS_80_MHZ_WIDTH		= BIT(3),
	RATE_INFO_FLAGS_80P80_MHZ_WIDTH		= BIT(4),
	RATE_INFO_FLAGS_160_MHZ_WIDTH		= BIT(5),
	RATE_INFO_FLAGS_SHORT_GI		= BIT(6),
	RATE_INFO_FLAGS_60G			= BIT(7),
956 957 958 959 960 961 962 963 964 965
};

/**
 * 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
966
 * @nss: number of streams (VHT only)
967 968 969 970 971
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
972
	u8 nss;
973 974
};

975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
/**
 * 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;
};

1006 1007
#define IEEE80211_MAX_CHAINS	4

1008
/**
1009
 * struct station_info - station information
1010
 *
1011
 * Station information filled by driver for get_station() and dump_station.
1012
 *
1013
 * @filled: bitflag of flags from &enum station_info_flags
1014
 * @connected_time: time(in secs) since a station is last connected
1015 1016 1017
 * @inactive_time: time since last station activity (tx/rx) in milliseconds
 * @rx_bytes: bytes received from this station
 * @tx_bytes: bytes transmitted to this station
1018 1019 1020
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
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 * @signal: The signal strength, type depends on the wiphy's signal_type.
 *	For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type.
 *	For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
1025 1026 1027
 * @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
1028 1029
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
1030 1031
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
1032 1033
 * @tx_retries: cumulative retry counts
 * @tx_failed: number of failed transmissions (retries exceeded, no ACK)
1034
 * @rx_dropped_misc:  Dropped for un-specified reason.
1035
 * @bss_param: current BSS parameters
1036 1037 1038 1039
 * @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.
1040 1041 1042 1043 1044
 * @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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1045
 * @sta_flags: station flags mask & values
1046
 * @beacon_loss_count: Number of times beacon loss event has triggered.
1047
 * @t_offset: Time offset of the station relative to this host.
1048 1049 1050
 * @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
1051 1052
 * @expected_throughput: expected throughput in kbps (including 802.11 headers)
 *	towards this station.
1053
 */
1054
struct station_info {
1055
	u32 filled;
1056
	u32 connected_time;
1057
	u32 inactive_time;
1058 1059
	u64 rx_bytes;
	u64 tx_bytes;
1060 1061 1062
	u16 llid;
	u16 plid;
	u8 plink_state;
1063
	s8 signal;
1064
	s8 signal_avg;
1065 1066 1067 1068 1069

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

1070
	struct rate_info txrate;
1071
	struct rate_info rxrate;
1072 1073
	u32 rx_packets;
	u32 tx_packets;
1074 1075
	u32 tx_retries;
	u32 tx_failed;
1076
	u32 rx_dropped_misc;
1077
	struct sta_bss_parameters bss_param;
1078
	struct nl80211_sta_flag_update sta_flags;
1079 1080

	int generation;
1081 1082 1083

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
1084

1085
	u32 beacon_loss_count;
1086
	s64 t_offset;
1087 1088 1089
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
1090

1091 1092
	u32 expected_throughput;

1093 1094 1095 1096
	/*
	 * Note: Add a new enum station_info_flags value for each new field and
	 * use it to check which fields are initialized.
	 */
1097 1098
};

1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
/**
 * 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);

1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
/**
 * 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
1123
 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
1124 1125 1126 1127 1128 1129 1130
 */
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,
1131
	MONITOR_FLAG_ACTIVE		= 1<<NL80211_MNTR_FLAG_ACTIVE,
1132 1133
};

1134 1135 1136 1137 1138 1139
/**
 * 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
1147 1148 1149
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
1150
	MPATH_INFO_SN			= BIT(1),
1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164
	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
1165
 * @sn: target sequence number
1166 1167 1168 1169 1170
 * @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
1171 1172 1173 1174
 * @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.
1175 1176 1177 1178
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
1179
	u32 sn;
1180 1181 1182 1183 1184
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
1185 1186

	int generation;
1187 1188
};

1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
/**
 * 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)
1200 1201 1202
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
1203
 * @ap_isolate: do not forward packets between connected stations
1204 1205
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
1206 1207
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
1208 1209 1210 1211 1212
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
1213
	const u8 *basic_rates;
1214
	u8 basic_rates_len;
1215
	int ap_isolate;
1216
	int ht_opmode;
1217
	s8 p2p_ctwindow, p2p_opp_ps;
1218
};
1219

1220
/**
1221 1222 1223
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
1224 1225 1226 1227 1228 1229 1230 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
 *
 * @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
1272 1273 1274 1275 1276 1277 1278
 *
 * @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.
1279 1280 1281
 * @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.
1282 1283 1284 1285
 * @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.
1286 1287 1288
 * @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.
1289
 */
1290 1291 1292 1293 1294
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
1295 1296 1297
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
1298
	bool auto_open_plinks;
1299
	u32 dot11MeshNbrOffsetMaxNeighbor;
1300
	u8 dot11MeshHWMPmaxPREQretries;
1301 1302 1303 1304
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
1305
	u16 dot11MeshHWMPperrMinInterval;
1306
	u16 dot11MeshHWMPnetDiameterTraversalTime;
1307
	u8 dot11MeshHWMPRootMode;
1308
	u16 dot11MeshHWMPRannInterval;
1309
	bool dot11MeshGateAnnouncementProtocol;
1310
	bool dot11MeshForwarding;
1311
	s32 rssi_threshold;
1312
	u16 ht_opmode;
1313 1314
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
1315
	u16 dot11MeshHWMPconfirmationInterval;
1316 1317
	enum nl80211_mesh_power_mode power_mode;
	u16 dot11MeshAwakeWindowDuration;
1318
	u32 plink_timeout;
1319 1320
};

1321 1322
/**
 * struct mesh_setup - 802.11s mesh setup configuration
1323
 * @chandef: defines the channel to use
1324 1325
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
1326
 * @sync_method: which synchronization method to use
1327 1328
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
1329
 * @auth_id: which authentication method this mesh is using
1330 1331
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
1332 1333
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
1334
 * @user_mpm: userspace handles all MPM functions
1335 1336
 * @dtim_period: DTIM period to use
 * @beacon_interval: beacon interval to use
1337
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
1338
 * @basic_rates: basic rates to use when creating the mesh
1339 1340 1341 1342
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
1343
	struct cfg80211_chan_def chandef;
1344 1345
	const u8 *mesh_id;
	u8 mesh_id_len;
1346 1347 1348
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
1349
	u8 auth_id;
1350 1351
	const u8 *ie;
	u8 ie_len;
1352
	bool is_authenticated;
1353
	bool is_secure;
1354
	bool user_mpm;
1355 1356
	u8 dtim_period;
	u16 beacon_interval;
1357
	int mcast_rate[IEEE80211_NUM_BANDS];
1358
	u32 basic_rates;
1359 1360
};

1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
/**
 * 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;
};

1371 1372
/**
 * struct ieee80211_txq_params - TX queue parameters
1373
 * @ac: AC identifier
1374 1375 1376 1377 1378 1379 1380 1381
 * @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 {
1382
	enum nl80211_ac ac;
1383 1384 1385 1386 1387 1388
	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.
 */
1411

1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
/**
 * 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.
1428
 * @n_channels: total number of channels to scan
1429
 * @scan_width: channel width for scanning
1430 1431
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1432
 * @flags: bit field of flags controlling operation
1433
 * @rates: bitmap of rates to advertise for each band
1434
 * @wiphy: the wiphy this was for
1435
 * @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
1438
 * @notified: (internal) scan request was notified as done or aborted
1439
 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1440 1441 1442 1443
 * @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
1444 1445 1446 1447 1448
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1449
	enum nl80211_bss_scan_width scan_width;
1450
	const u8 *ie;
1451
	size_t ie_len;
1452
	u32 flags;
1453

1454 1455
	u32 rates[IEEE80211_NUM_BANDS];

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1456 1457
	struct wireless_dev *wdev;

1458 1459 1460
	u8 mac_addr[ETH_ALEN] __aligned(2);
	u8 mac_addr_mask[ETH_ALEN] __aligned(2);

1461 1462
	/* internal */
	struct wiphy *wiphy;
1463
	unsigned long scan_start;
1464
	bool aborted, notified;
1465
	bool no_cck;
1466 1467 1468

	/* keep last */
	struct ieee80211_channel *channels[0];
1469 1470
};

1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481
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];
	}
}

1482 1483 1484
/**
 * struct cfg80211_match_set - sets of attributes to match
 *
1485 1486
 * @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)
1487 1488 1489
 */
struct cfg80211_match_set {
	struct cfg80211_ssid ssid;
1490
	s32 rssi_thold;
1491 1492
};

1493 1494 1495 1496 1497 1498
/**
 * 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
1499
 * @scan_width: channel width for scanning
1500
 * @interval: interval between each scheduled scan cycle
1501 1502
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1503
 * @flags: bit field of flags controlling operation
1504 1505 1506 1507 1508
 * @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
1509 1510
 * @wiphy: the wiphy this was for
 * @dev: the interface
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 * @scan_start: start time of the scheduled scan
1512
 * @channels: channels to scan
1513 1514
 * @min_rssi_thold: for drivers only supporting a single threshold, this
 *	contains the minimum over all matchsets
1515 1516 1517 1518
 * @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
1519
 * @rcu_head: RCU callback used to free the struct
1520 1521
 * @owner_nlportid: netlink portid of owner (if this should is a request
 *	owned by a particular socket)
1522 1523 1524 1525 1526
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1527
	enum nl80211_bss_scan_width scan_width;
1528
	u32 interval;
1529 1530
	const u8 *ie;
	size_t ie_len;
1531
	u32 flags;
1532 1533
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1534
	s32 min_rssi_thold;
1535

1536 1537 1538
	u8 mac_addr[ETH_ALEN] __aligned(2);
	u8 mac_addr_mask[ETH_ALEN] __aligned(2);

1539 1540 1541
	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1542
	unsigned long scan_start;
1543
	struct rcu_head rcu_head;
1544
	u32 owner_nlportid;
1545 1546 1547 1548 1549

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

1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562
/**
 * 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,
};

1563 1564
/**
 * struct cfg80211_bss_ie_data - BSS entry IE data
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 * @tsf: TSF contained in the frame that carried these IEs
1566 1567
 * @rcu_head: internal use, for freeing
 * @len: length of the IEs
1568
 * @from_beacon: these IEs are known to come from a beacon
1569 1570 1571
 * @data: IE data
 */
struct cfg80211_bss_ies {
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1572
	u64 tsf;
1573 1574
	struct rcu_head rcu_head;
	int len;
1575
	bool from_beacon;
1576 1577 1578
	u8 data[];
};

1579 1580 1581 1582 1583 1584
/**
 * 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
1586
 * @scan_width: width of the control channel
1587 1588 1589
 * @bssid: BSSID of the BSS
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
1590 1591 1592 1593
 * @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.
1594
 * @beacon_ies: the information elements from the last Beacon frame
1595 1596 1597
 *	(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)
1598
 * @proberesp_ies: the information elements from the last Probe Response frame
1599 1600 1601 1602
 * @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)
1604 1605 1606 1607
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
	struct ieee80211_channel *channel;
1608
	enum nl80211_bss_scan_width scan_width;
1609

1610 1611 1612 1613
	const struct cfg80211_bss_ies __rcu *ies;
	const struct cfg80211_bss_ies __rcu *beacon_ies;
	const struct cfg80211_bss_ies __rcu *proberesp_ies;

1614
	struct cfg80211_bss *hidden_beacon_bss;
1615 1616 1617

	s32 signal;

1618 1619 1620
	u16 beacon_interval;
	u16 capability;

1621
	u8 bssid[ETH_ALEN];
1622

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	u8 priv[0] __aligned(sizeof(void *));
1624 1625
};

1626 1627 1628 1629
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
1630 1631 1632
 *
 * Note that the return value is an RCU-protected pointer, so
 * rcu_read_lock() must be held when calling this function.
1633
 * Return: %NULL if not found.
1634 1635 1636 1637
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1638 1639 1640 1641 1642
/**
 * struct cfg80211_auth_request - Authentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * authentication.
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 *
1644 1645
 * @bss: The BSS to authenticate with, the callee must obtain a reference
 *	to it if it needs to keep it.
1646 1647 1648
 * @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
1652 1653 1654
 * @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
1655 1656
 */
struct cfg80211_auth_request {
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	struct cfg80211_bss *bss;
1658 1659
	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;
1663 1664
	const u8 *sae_data;
	size_t sae_data_len;
1665 1666
};

1667 1668 1669 1670
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
1671
 * @ASSOC_REQ_DISABLE_VHT:  Disable VHT
1672
 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association
1673 1674 1675
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
1676
	ASSOC_REQ_DISABLE_VHT		= BIT(1),
1677
	ASSOC_REQ_USE_RRM		= BIT(2),
1678 1679
};

1680 1681 1682 1683 1684
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1685 1686 1687 1688
 * @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.
1689 1690
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1691
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
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 * @crypto: crypto settings
1693
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
1694 1695
 * @flags:  See &enum cfg80211_assoc_req_flags
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1696
 *	will be used in ht_capa.  Un-supported values will be ignored.
1697
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
1698 1699
 * @vht_capa: VHT capability override
 * @vht_capa_mask: VHT capability mask indicating which fields to use
1700 1701
 */
struct cfg80211_assoc_request {
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	struct cfg80211_bss *bss;
1703
	const u8 *ie, *prev_bssid;
1704
	size_t ie_len;
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	struct cfg80211_crypto_settings crypto;
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	bool use_mfp;
1707 1708 1709
	u32 flags;
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1710
	struct ieee80211_vht_cap vht_capa, vht_capa_mask;
1711 1712 1713 1714 1715 1716 1717 1718
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
1719
 * @bssid: the BSSID of the BSS to deauthenticate from
1720 1721
 * @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
1725 1726
 */
struct cfg80211_deauth_request {
1727
	const u8 *bssid;
1728 1729
	const u8 *ie;
	size_t ie_len;
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	u16 reason_code;
1731
	bool local_state_change;
1732 1733 1734 1735 1736 1737 1738 1739
};

/**
 * 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
1741 1742
 * @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
1744 1745
 * @local_state_change: This is a request for a local state only, i.e., no
 *	Disassociation frame is to be transmitted.
1746 1747
 */
struct cfg80211_disassoc_request {
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	struct cfg80211_bss *bss;
1749 1750
	const u8 *ie;
	size_t ie_len;
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1751
	u16 reason_code;
1752
	bool local_state_change;
1753 1754
};

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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.
1765
 * @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
1770
 * @beacon_interval: beacon interval to use
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 * @privacy: this is a protected network, keys will be configured
 *	after joining
1773 1774 1775 1776
 * @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.
1777 1778 1779
 * @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.
1780
 * @basic_rates: bitmap of basic rates to use when creating the IBSS
1781
 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
1782
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1783
 *	will be used in ht_capa.  Un-supported values will be ignored.
1784
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
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 */
struct cfg80211_ibss_params {
1787 1788
	const u8 *ssid;
	const u8 *bssid;
1789
	struct cfg80211_chan_def chandef;
1790
	const u8 *ie;
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	u8 ssid_len, ie_len;
1792
	u16 beacon_interval;
1793
	u32 basic_rates;
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	bool channel_fixed;
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	bool privacy;
1796
	bool control_port;
1797
	bool userspace_handles_dfs;
1798
	int mcast_rate[IEEE80211_NUM_BANDS];
1799 1800
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
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1801 1802
};

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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)
1811 1812
 * @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)
1815 1816 1817 1818
 * @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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1822 1823
 * @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
1825
 * @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
1830
 * @flags:  See &enum cfg80211_assoc_req_flags
1831
 * @bg_scan_period:  Background scan period in seconds
1832
 *	or -1 to indicate that default value is to be used.
1833
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
1834
 *	will be used in ht_capa.  Un-supported values will be ignored.
1835
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
1836 1837
 * @vht_capa:  VHT Capability overrides
 * @vht_capa_mask: The bits of vht_capa which are to be used.
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1838 1839 1840
 */
struct cfg80211_connect_params {
	struct ieee80211_channel *channel;
1841
	struct ieee80211_channel *channel_hint;
1842
	const u8 *bssid;
1843
	const u8 *bssid_hint;
1844
	const u8 *ssid;
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1845 1846
	size_t ssid_len;
	enum nl80211_auth_type auth_type;
1847
	const u8 *ie;
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1848 1849
	size_t ie_len;
	bool privacy;
1850
	enum nl80211_mfp mfp;
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1851
	struct cfg80211_crypto_settings crypto;
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1852 1853
	const u8 *key;
	u8 key_len, key_idx;
1854
	u32 flags;
1855
	int bg_scan_period;
1856 1857
	struct ieee80211_ht_cap ht_capa;
	struct ieee80211_ht_cap ht_capa_mask;
1858 1859
	struct ieee80211_vht_cap vht_capa;
	struct ieee80211_vht_cap vht_capa_mask;
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1860 1861
};

1862 1863
/**
 * 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
1869
 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled
1870 1871 1872 1873 1874 1875
 */
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,
1876
	WIPHY_PARAM_COVERAGE_CLASS	= 1 << 4,
1877
	WIPHY_PARAM_DYN_ACK		= 1 << 5,
1878 1879
};

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1880 1881 1882 1883 1884 1885
/*
 * cfg80211_bitrate_mask - masks for bitrate control
 */
struct cfg80211_bitrate_mask {
	struct {
		u32 legacy;
1886
		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
1887
		u16 vht_mcs[NL80211_VHT_NSS_MAX];
1888
		enum nl80211_txrate_gi gi;
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1889 1890
	} control[IEEE80211_NUM_BANDS];
};
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1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
/**
 * 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 {
1901 1902
	const u8 *bssid;
	const u8 *pmkid;
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1903
};
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/**
1906
 * 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)
1911
 * @pkt_offset: packet offset (in bytes)
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1912 1913 1914 1915
 *
 * Internal note: @mask and @pattern are allocated in one chunk of
 * memory, free @mask only!
 */
1916
struct cfg80211_pkt_pattern {
1917
	const u8 *mask, *pattern;
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	int pattern_len;
1919
	int pkt_offset;
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1920 1921
};

1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
/**
 * 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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1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
};

/**
 * 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
1967 1968 1969 1970
 * @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
1971 1972
 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
 *	NULL if not configured.
1973
 * @nd_config: configuration for the scan to be used for net detect wake.
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 */
struct cfg80211_wowlan {
1976 1977 1978
	bool any, disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
	     rfkill_release;
1979
	struct cfg80211_pkt_pattern *patterns;
1980
	struct cfg80211_wowlan_tcp *tcp;
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1981
	int n_patterns;
1982
	struct cfg80211_sched_scan_request *nd_config;
J
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1983 1984
};

1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
/**
 * 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;
};

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042
/**
 * 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[];
};

2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
/**
 * 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.
2059 2060 2061
 * @tcp_match: TCP wakeup packet received
 * @tcp_connlost: TCP connection lost or failed to establish
 * @tcp_nomoretokens: TCP data ran out of tokens
2062
 * @net_detect: if not %NULL, woke up because of net detect
2063 2064 2065 2066
 */
struct cfg80211_wowlan_wakeup {
	bool disconnect, magic_pkt, gtk_rekey_failure,
	     eap_identity_req, four_way_handshake,
2067 2068
	     rfkill_release, packet_80211,
	     tcp_match, tcp_connlost, tcp_nomoretokens;
2069 2070 2071
	s32 pattern_idx;
	u32 packet_present_len, packet_len;
	const void *packet;
2072
	struct cfg80211_wowlan_nd_info *net_detect;
2073 2074
};

2075 2076
/**
 * struct cfg80211_gtk_rekey_data - rekey data
2077 2078 2079
 * @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)
2080 2081
 */
struct cfg80211_gtk_rekey_data {
2082
	const u8 *kek, *kck, *replay_ctr;
2083 2084
};

2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
/**
 * 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;
};

2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111
/**
 * 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
2112 2113
 * @n_csa_offsets: length of csa_offsets array
 * @csa_offsets: array of all the csa offsets in the frame
2114 2115 2116 2117 2118 2119 2120 2121 2122
 */
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;
2123 2124
	int n_csa_offsets;
	const u16 *csa_offsets;
2125 2126
};

2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170
/**
 * 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];
};

2171 2172 2173 2174 2175 2176 2177 2178 2179
/**
 * 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.
 *
2180 2181 2182 2183
 * 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
2188 2189 2190
 * @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,
2193
 *	must set the struct wireless_dev's iftype. Beware: You must create
2194
 *	the new netdev in the wiphy's network namespace! Returns the struct
2195 2196
 *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
 *	also set the address member in the wdev.
2197
 *
2198
 * @del_virtual_intf: remove the virtual interface
2199
 *
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 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
2202
 *
2203 2204 2205 2206 2207 2208
 * @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
2209 2210
 *	after it returns. This function should return an error if it is
 *	not possible to retrieve the key, -ENOENT if it doesn't exist.
2211 2212
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
2213
 *	and @key_index, return -ENOENT if the key doesn't exist.
2214 2215
 *
 * @set_default_key: set the default key on an interface
2216
 *
2217 2218
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
2219 2220
 * @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.
2225 2226
 *
 * @add_station: Add a new station.
2227
 * @del_station: Remove a station
2228 2229 2230
 * @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
2231 2232
 *	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
2241 2242
 * @get_mpp: get a mesh proxy path for the given parameters
 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx
2243
 * @join_mesh: join the mesh network with the specified parameters
2244
 *	(invoked with the wireless_dev mutex held)
2245
 * @leave_mesh: leave the current mesh network
2246
 *	(invoked with the wireless_dev mutex held)
2247
 *
2248
 * @get_mesh_config: Get the current mesh configuration
2249
 *
2250
 * @update_mesh_config: Update mesh parameters on a running mesh.
2251 2252 2253
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
2254
 * @change_bss: Modify parameters for a given BSS.
2255 2256
 *
 * @set_txq_params: Set TX queue parameters
2257
 *
2258 2259 2260 2261 2262 2263 2264 2265
 * @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.
2266
 *
2267 2268 2269 2270
 * @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.
2271 2272
 *
 * @auth: Request to authenticate with the specified peer
2273
 *	(invoked with the wireless_dev mutex held)
2274
 * @assoc: Request to (re)associate with the specified peer
2275
 *	(invoked with the wireless_dev mutex held)
2276
 * @deauth: Request to deauthenticate from the specified peer
2277
 *	(invoked with the wireless_dev mutex held)
2278
 * @disassoc: Request to disassociate from the specified peer
2279
 *	(invoked with the wireless_dev mutex held)
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 *
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 * @connect: Connect to the ESS with the specified parameters. When connected,
 *	call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS.
 *	If the connection fails for some reason, call cfg80211_connect_result()
 *	with the status from the AP.
2285
 *	(invoked with the wireless_dev mutex held)
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 * @disconnect: Disconnect from the BSS/ESS.
2287
 *	(invoked with the wireless_dev mutex held)
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2288
 *
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 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
 *	cfg80211_ibss_joined(), also call that function when changing BSSID due
 *	to a merge.
2292
 *	(invoked with the wireless_dev mutex held)
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2293
 * @leave_ibss: Leave the IBSS.
2294
 *	(invoked with the wireless_dev mutex held)
2295
 *
2296 2297 2298
 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
 *	MESH mode)
 *
2299 2300 2301 2302
 * @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.
2303
 *
2304
 * @set_tx_power: set the transmit power according to the parameters,
2305 2306 2307 2308
 *	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.)
2309
 * @get_tx_power: store the current TX power into the dbm variable;
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2310 2311
 *	return 0 if successful
 *
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2312 2313
 * @set_wds_peer: set the WDS peer for a WDS interface
 *
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2314 2315
 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
 *	functions to adjust rfkill hw state
2316
 *
2317 2318
 * @dump_survey: get site survey information.
 *
2319 2320 2321 2322 2323 2324 2325 2326
 * @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.
2327 2328 2329
 * @mgmt_tx: Transmit a management frame.
 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
 *	frame on another channel
2330
 *
2331
 * @testmode_cmd: run a test mode command; @wdev may be %NULL
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 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be
 *	used by the function, but 0 and 1 must not be touched. Additionally,
 *	return error codes other than -ENOBUFS and -ENOENT will terminate the
 *	dump and return to userspace with an error, so be careful. If any data
 *	was passed in from userspace then the data/len arguments will be present
 *	and point to the data contained in %NL80211_ATTR_TESTDATA.
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2338
 *
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2339 2340
 * @set_bitrate_mask: set the bitrate mask configuration
 *
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2341 2342 2343 2344 2345
 * @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.
2346 2347
 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1
 *	allows the driver to adjust the dynamic ps timeout value.
2348
 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
2349 2350
 * @set_cqm_txe_config: Configure connection quality monitor TX error
 *	thresholds.
2351
 * @sched_scan_start: Tell the driver to start a scheduled scan.
2352 2353 2354 2355 2356 2357
 * @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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2358
 *
2359 2360 2361
 * @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.
2362 2363 2364 2365 2366 2367 2368
 *
 * @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).
2369
 *
2370 2371
 * @tdls_mgmt: Transmit a TDLS management frame.
 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
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2372 2373 2374
 *
 * @probe_client: probe an associated client, must return a cookie that it
 *	later passes to cfg80211_probe_status().
2375 2376
 *
 * @set_noack_map: Set the NoAck Map for the TIDs.
2377
 *
2378 2379 2380
 * @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.
2381 2382 2383
 *
 * @start_p2p_device: Start the given P2P device.
 * @stop_p2p_device: Stop the given P2P device.
2384 2385 2386 2387 2388 2389 2390
 *
 * @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.
2391 2392
 *
 * @start_radar_detection: Start radar detection in the driver.
2393 2394 2395 2396
 *
 * @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.
2397 2398 2399 2400 2401 2402
 *
 * @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.
2403
 * @set_coalesce: Set coalesce parameters.
2404
 *
2405 2406 2407 2408 2409 2410
 * @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.
2411 2412
 *
 * @set_qos_map: Set QoS mapping information to the driver
2413 2414 2415 2416
 *
 * @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.
2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427
 *
 * @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
2428 2429 2430 2431 2432
 *
 * @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)
2433 2434 2435 2436 2437 2438
 *
 * @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.
2439 2440
 */
struct cfg80211_ops {
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2441
	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
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2442
	int	(*resume)(struct wiphy *wiphy);
2443
	void	(*set_wakeup)(struct wiphy *wiphy, bool enabled);
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2444

2445
	struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
2446
						  const char *name,
2447 2448 2449 2450 2451
						  enum nl80211_iftype type,
						  u32 *flags,
						  struct vif_params *params);
	int	(*del_virtual_intf)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
2452 2453
	int	(*change_virtual_intf)(struct wiphy *wiphy,
				       struct net_device *dev,
2454 2455
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
2456 2457

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
2458
			   u8 key_index, bool pairwise, const u8 *mac_addr,
2459 2460
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
2461 2462
			   u8 key_index, bool pairwise, const u8 *mac_addr,
			   void *cookie,
2463 2464
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
2465
			   u8 key_index, bool pairwise, const u8 *mac_addr);
2466 2467
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
2468
				   u8 key_index, bool unicast, bool multicast);
2469 2470 2471
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
2472

2473 2474 2475 2476 2477
	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);
2478 2479 2480


	int	(*add_station)(struct wiphy *wiphy, struct net_device *dev,
2481 2482
			       const u8 *mac,
			       struct station_parameters *params);
2483
	int	(*del_station)(struct wiphy *wiphy, struct net_device *dev,
2484
			       struct station_del_parameters *params);
2485
	int	(*change_station)(struct wiphy *wiphy, struct net_device *dev,
2486 2487
				  const u8 *mac,
				  struct station_parameters *params);
2488
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
2489
			       const u8 *mac, struct station_info *sinfo);
2490
	int	(*dump_station)(struct wiphy *wiphy, struct net_device *dev,
2491
				int idx, u8 *mac, struct station_info *sinfo);
2492 2493

	int	(*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
2494
			       const u8 *dst, const u8 *next_hop);
2495
	int	(*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
2496
			       const u8 *dst);
2497
	int	(*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
2498
				  const u8 *dst, const u8 *next_hop);
2499
	int	(*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
2500
			     u8 *dst, u8 *next_hop, struct mpath_info *pinfo);
2501
	int	(*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
2502 2503
			      int idx, u8 *dst, u8 *next_hop,
			      struct mpath_info *pinfo);
2504 2505 2506 2507 2508
	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);
2509
	int	(*get_mesh_config)(struct wiphy *wiphy,
2510 2511
				struct net_device *dev,
				struct mesh_config *conf);
2512
	int	(*update_mesh_config)(struct wiphy *wiphy,
2513 2514 2515 2516 2517 2518 2519
				      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);

2520 2521 2522 2523
	int	(*join_ocb)(struct wiphy *wiphy, struct net_device *dev,
			    struct ocb_setup *setup);
	int	(*leave_ocb)(struct wiphy *wiphy, struct net_device *dev);

2524 2525
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
2526

2527
	int	(*set_txq_params)(struct wiphy *wiphy, struct net_device *dev,
2528
				  struct ieee80211_txq_params *params);
2529

2530 2531 2532 2533 2534
	int	(*libertas_set_mesh_channel)(struct wiphy *wiphy,
					     struct net_device *dev,
					     struct ieee80211_channel *chan);

	int	(*set_monitor_channel)(struct wiphy *wiphy,
2535
				       struct cfg80211_chan_def *chandef);
2536

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2537
	int	(*scan)(struct wiphy *wiphy,
2538
			struct cfg80211_scan_request *request);
2539 2540 2541 2542 2543 2544

	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,
2545
			  struct cfg80211_deauth_request *req);
2546
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
2547
			    struct cfg80211_disassoc_request *req);
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2548

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2549 2550 2551 2552 2553
	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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2554 2555 2556
	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);
2557

2558 2559 2560
	int	(*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
				  int rate[IEEE80211_NUM_BANDS]);

2561
	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
2562

2563
	int	(*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
2564
				enum nl80211_tx_power_setting type, int mbm);
2565 2566
	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
				int *dbm);
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2567

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2568
	int	(*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
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2569
				const u8 *addr);
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2570

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2571
	void	(*rfkill_poll)(struct wiphy *wiphy);
2572 2573

#ifdef CONFIG_NL80211_TESTMODE
2574 2575
	int	(*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev,
				void *data, int len);
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	int	(*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb,
				 struct netlink_callback *cb,
				 void *data, int len);
2579
#endif
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2581 2582 2583 2584 2585
	int	(*set_bitrate_mask)(struct wiphy *wiphy,
				    struct net_device *dev,
				    const u8 *peer,
				    const struct cfg80211_bitrate_mask *mask);

2586 2587 2588
	int	(*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
			int idx, struct survey_info *info);

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2589 2590 2591 2592 2593 2594
	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);

2595
	int	(*remain_on_channel)(struct wiphy *wiphy,
2596
				     struct wireless_dev *wdev,
2597 2598 2599 2600
				     struct ieee80211_channel *chan,
				     unsigned int duration,
				     u64 *cookie);
	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
2601
					    struct wireless_dev *wdev,
2602 2603
					    u64 cookie);

2604
	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
2605 2606
			   struct cfg80211_mgmt_tx_params *params,
			   u64 *cookie);
2607
	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
2608
				       struct wireless_dev *wdev,
2609
				       u64 cookie);
2610

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	int	(*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
				  bool enabled, int timeout);
2613 2614 2615 2616

	int	(*set_cqm_rssi_config)(struct wiphy *wiphy,
				       struct net_device *dev,
				       s32 rssi_thold, u32 rssi_hyst);
2617

2618 2619 2620 2621
	int	(*set_cqm_txe_config)(struct wiphy *wiphy,
				      struct net_device *dev,
				      u32 rate, u32 pkts, u32 intvl);

2622
	void	(*mgmt_frame_register)(struct wiphy *wiphy,
2623
				       struct wireless_dev *wdev,
2624
				       u16 frame_type, bool reg);
2625 2626 2627

	int	(*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
	int	(*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
2628

2629 2630 2631
	int	(*sched_scan_start)(struct wiphy *wiphy,
				struct net_device *dev,
				struct cfg80211_sched_scan_request *request);
2632
	int	(*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
2633 2634 2635

	int	(*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_gtk_rekey_data *data);
2636 2637

	int	(*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
2638
			     const u8 *peer, u8 action_code,  u8 dialog_token,
2639
			     u16 status_code, u32 peer_capability,
2640
			     bool initiator, const u8 *buf, size_t len);
2641
	int	(*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
2642
			     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);
2646

2647 2648 2649 2650
	int	(*set_noack_map)(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map);

2651
	int	(*get_channel)(struct wiphy *wiphy,
2652
			       struct wireless_dev *wdev,
2653
			       struct cfg80211_chan_def *chandef);
2654 2655 2656 2657 2658

	int	(*start_p2p_device)(struct wiphy *wiphy,
				    struct wireless_dev *wdev);
	void	(*stop_p2p_device)(struct wiphy *wiphy,
				   struct wireless_dev *wdev);
2659 2660 2661

	int	(*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
			       const struct cfg80211_acl_data *params);
2662 2663 2664

	int	(*start_radar_detection)(struct wiphy *wiphy,
					 struct net_device *dev,
2665 2666
					 struct cfg80211_chan_def *chandef,
					 u32 cac_time_ms);
2667 2668
	int	(*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
				 struct cfg80211_update_ft_ies_params *ftie);
2669 2670 2671 2672 2673 2674
	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);
2675 2676
	int	(*set_coalesce)(struct wiphy *wiphy,
				struct cfg80211_coalesce *coalesce);
2677 2678 2679 2680

	int	(*channel_switch)(struct wiphy *wiphy,
				  struct net_device *dev,
				  struct cfg80211_csa_settings *params);
2681

2682 2683 2684
	int     (*set_qos_map)(struct wiphy *wiphy,
			       struct net_device *dev,
			       struct cfg80211_qos_map *qos_map);
2685 2686 2687

	int	(*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
				    struct cfg80211_chan_def *chandef);
2688 2689 2690 2691 2692 2693

	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);
2694 2695 2696 2697 2698 2699 2700 2701

	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);
2702 2703
};

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

/**
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2710 2711 2712 2713 2714 2715 2716 2717
 * 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
2718 2719 2720
 * @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
2721 2722 2723
 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
 *	control port protocol ethertype. The device also honours the
 *	control_port_no_encrypt flag.
2724
 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
2725 2726
 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
 *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
2727
 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
2728 2729
 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
 *	firmware.
2730
 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
2731 2732 2733 2734 2735 2736
 * @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
2738 2739 2740
 * @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().
2741 2742
 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
 *	responds to probe-requests in hardware.
2743 2744
 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
2745
 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
2746 2747
 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in
 *	beaconing mode (AP, IBSS, Mesh, ...).
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 */
enum wiphy_flags {
2750
	/* use hole at 0 */
2751 2752
	/* use hole at 1 */
	/* use hole at 2 */
2753 2754 2755 2756 2757
	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),
2758
	WIPHY_FLAG_IBSS_RSN			= BIT(8),
2759
	WIPHY_FLAG_MESH_AUTH			= BIT(10),
2760
	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
2761
	/* use hole at 12 */
2762
	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
2763
	WIPHY_FLAG_AP_UAPSD			= BIT(14),
2764 2765
	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
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	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
2767
	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
2768
	WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD	= BIT(19),
2769 2770
	WIPHY_FLAG_OFFCHAN_TX			= BIT(20),
	WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL	= BIT(21),
2771
	WIPHY_FLAG_SUPPORTS_5_10_MHZ		= BIT(22),
2772
	WIPHY_FLAG_HAS_CHANNEL_SWITCH		= BIT(23),
2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794
};

/**
 * 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.
2795
 * @radar_detect_widths: bitmap of channel widths supported for radar detection
2796
 * @radar_detect_regions: bitmap of regions supported for radar detection
2797
 *
2798 2799
 * With this structure the driver can describe which interface
 * combinations it supports concurrently.
2800
 *
2801 2802 2803
 * Examples:
 *
 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total:
2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816
 *
 *  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,
 *  };
 *
 *
2817
 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total:
2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830
 *
 *  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,
 *  };
 *
 *
2831 2832
 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total.
 *
2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852
 * 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;
2853
	u8 radar_detect_widths;
2854
	u8 radar_detect_regions;
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2855 2856
};

2857 2858 2859 2860
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
2871 2872 2873 2874 2875
 * @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
2876
 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection
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 */
enum wiphy_wowlan_support_flags {
2879 2880 2881 2882 2883 2884 2885 2886
	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),
2887
	WIPHY_WOWLAN_NET_DETECT		= BIT(8),
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};

2890 2891 2892 2893 2894 2895 2896 2897
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
2905
 * @max_pkt_offset: maximum Rx packet offset
2906 2907 2908 2909 2910
 * @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.
2911
 * @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;
2918
	int max_pkt_offset;
2919
	int max_nd_match_sets;
2920
	const struct wiphy_wowlan_tcp_support *tcp;
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2921 2922
};

2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941
/**
 * 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
2972 2973 2974
 * @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
2982 2983 2984 2985 2986
 * @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
2988 2989 2990
 * @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
2991
 *	four bits are variable then set it to 00-00-00-00-00-0f. The actual
2992 2993 2994 2995 2996 2997 2998 2999
 *	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.
3000 3001
 * @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
3005
 * @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
3010 3011 3012 3013 3014
 * @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
3016 3017
 * @regulatory_flags: wiphy regulatory flags, see
 *	&enum ieee80211_regulatory_flags
3018
 * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
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 * @bss_priv_size: each BSS struct has private data allocated with it,
 *	this variable determines its size
 * @max_scan_ssids: maximum number of SSIDs the device can scan for in
 *	any given scan
3023 3024
 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan
 *	for in any given scheduled scan
3025 3026 3027
 * @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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3028 3029 3030
 * @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
3031 3032
 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled
 *	scans
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3033 3034 3035 3036 3037 3038 3039
 * @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
3040 3041 3042 3043
 *
 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
 *	transmitted through nl80211, points to an array indexed by interface
 *	type
3044
 *
3045 3046 3047 3048 3049 3050 3051
 * @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.
3052
 *
3053 3054 3055 3056 3057
 * @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.
 *
3058 3059
 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
 *	may request, if implemented.
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3060 3061
 *
 * @wowlan: WoWLAN support information
3062 3063 3064
 * @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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3065 3066
 *
 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
3067 3068
 * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
 *	If null, then none can be over-ridden.
3069 3070
 * @vht_capa_mod_mask:  Specify what VHT capabilities can be over-ridden.
 *	If null, then none can be over-ridden.
3071 3072 3073
 *
 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
 *	supports for ACL.
3074 3075 3076 3077 3078 3079 3080 3081
 *
 * @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
3082
 * @coalesce: packet coalescing support information
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3083 3084 3085
 *
 * @vendor_commands: array of vendor commands supported by the hardware
 * @n_vendor_commands: number of vendor commands
3086 3087
 * @vendor_events: array of vendor events supported by the hardware
 * @n_vendor_events: number of vendor events
3088 3089 3090 3091 3092
 *
 * @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.
3093 3094 3095 3096 3097
 *
 * @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.
3098 3099 3100 3101 3102 3103
 * @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.
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3104 3105 3106 3107
 */
struct wiphy {
	/* assign these fields before you register the wiphy */

3108
	/* permanent MAC address(es) */
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3109
	u8 perm_addr[ETH_ALEN];
3110 3111 3112
	u8 addr_mask[ETH_ALEN];

	struct mac_address *addresses;
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3113

3114 3115
	const struct ieee80211_txrx_stypes *mgmt_stypes;

3116 3117 3118 3119
	const struct ieee80211_iface_combination *iface_combinations;
	int n_iface_combinations;
	u16 software_iftypes;

3120 3121
	u16 n_addresses;

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3122 3123 3124
	/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
	u16 interface_modes;

3125 3126
	u16 max_acl_mac_addrs;

3127
	u32 flags, regulatory_flags, features;
3128

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3129 3130
	u32 ap_sme_capa;

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3131 3132 3133 3134
	enum cfg80211_signal_type signal_type;

	int bss_priv_size;
	u8 max_scan_ssids;
3135
	u8 max_sched_scan_ssids;
3136
	u8 max_match_sets;
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3137
	u16 max_scan_ie_len;
3138
	u16 max_sched_scan_ie_len;
J
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3139 3140 3141 3142

	int n_cipher_suites;
	const u32 *cipher_suites;

3143 3144 3145 3146
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;
3147
	u8 coverage_class;
3148

3149
	char fw_version[ETHTOOL_FWVERS_LEN];
3150 3151
	u32 hw_version;

3152
#ifdef CONFIG_PM
3153
	const struct wiphy_wowlan_support *wowlan;
3154
	struct cfg80211_wowlan *wowlan_config;
3155
#endif
J
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3156

3157 3158
	u16 max_remain_on_channel_duration;

S
Samuel Ortiz 已提交
3159 3160
	u8 max_num_pmkids;

3161 3162
	u32 available_antennas_tx;
	u32 available_antennas_rx;
3163

3164 3165 3166 3167 3168 3169 3170
	/*
	 * 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;

3171 3172 3173
	const u8 *extended_capabilities, *extended_capabilities_mask;
	u8 extended_capabilities_len;

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3174 3175 3176 3177 3178
	/* 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. */
3179
	const void *privid;
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3180 3181 3182 3183

	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
3184 3185
	void (*reg_notifier)(struct wiphy *wiphy,
			     struct regulatory_request *request);
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3186 3187 3188

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

3189
	const struct ieee80211_regdomain __rcu *regd;
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3190 3191 3192 3193 3194

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

3195 3196 3197
	/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
	bool registered;

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3198 3199 3200
	/* dir in debugfs: ieee80211/<wiphyname> */
	struct dentry *debugfsdir;

3201
	const struct ieee80211_ht_cap *ht_capa_mod_mask;
3202
	const struct ieee80211_vht_cap *vht_capa_mod_mask;
3203

3204 3205 3206 3207 3208
#ifdef CONFIG_NET_NS
	/* the network namespace this phy lives in currently */
	struct net *_net;
#endif

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3209 3210 3211 3212
#ifdef CONFIG_CFG80211_WEXT
	const struct iw_handler_def *wext;
#endif

3213 3214
	const struct wiphy_coalesce_support *coalesce;

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3215
	const struct wiphy_vendor_command *vendor_commands;
3216 3217
	const struct nl80211_vendor_cmd_info *vendor_events;
	int n_vendor_commands, n_vendor_events;
J
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3218

3219 3220
	u16 max_ap_assoc_sta;

3221
	u8 max_num_csa_counters;
3222
	u8 max_adj_channel_rssi_comp;
3223

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3224
	char priv[0] __aligned(NETDEV_ALIGN);
J
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3225 3226
};

3227 3228
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
E
Eric Dumazet 已提交
3229
	return read_pnet(&wiphy->_net);
3230 3231 3232 3233
}

static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
E
Eric Dumazet 已提交
3234
	write_pnet(&wiphy->_net, net);
3235 3236
}

J
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3237 3238 3239 3240
/**
 * wiphy_priv - return priv from wiphy
 *
 * @wiphy: the wiphy whose priv pointer to return
3241
 * Return: The priv of @wiphy.
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3242 3243 3244 3245 3246 3247 3248
 */
static inline void *wiphy_priv(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return &wiphy->priv;
}

3249 3250 3251 3252
/**
 * priv_to_wiphy - return the wiphy containing the priv
 *
 * @priv: a pointer previously returned by wiphy_priv
3253
 * Return: The wiphy of @priv.
3254 3255 3256 3257 3258 3259 3260
 */
static inline struct wiphy *priv_to_wiphy(void *priv)
{
	BUG_ON(!priv);
	return container_of(priv, struct wiphy, priv);
}

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3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275
/**
 * 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
3276
 * Return: The dev of @wiphy.
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3277 3278 3279 3280 3281 3282 3283 3284 3285 3286
 */
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
3287
 * Return: The name of @wiphy.
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3288
 */
3289
static inline const char *wiphy_name(const struct wiphy *wiphy)
J
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3290 3291 3292 3293
{
	return dev_name(&wiphy->dev);
}

3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310
/**
 * 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);

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3311 3312 3313 3314 3315 3316 3317 3318 3319
/**
 * 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.
 *
3320 3321
 * 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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3322
 */
3323 3324 3325 3326 3327
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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3328 3329 3330 3331 3332 3333

/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
3334
 * Return: A non-negative wiphy index or a negative error code.
J
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3335
 */
3336
int wiphy_register(struct wiphy *wiphy);
J
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3337 3338 3339 3340 3341 3342 3343 3344 3345 3346

/**
 * 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.
 */
3347
void wiphy_unregister(struct wiphy *wiphy);
J
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3348 3349 3350 3351 3352 3353

/**
 * wiphy_free - free wiphy
 *
 * @wiphy: The wiphy to free
 */
3354
void wiphy_free(struct wiphy *wiphy);
J
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3355

J
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3356
/* internal structs */
3357
struct cfg80211_conn;
J
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3358
struct cfg80211_internal_bss;
J
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3359
struct cfg80211_cached_keys;
J
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3360

J
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3361
/**
3362
 * struct wireless_dev - wireless device state
J
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3363
 *
3364 3365 3366 3367 3368 3369 3370 3371 3372 3373
 * For netdevs, this structure must be allocated by the driver
 * that uses the ieee80211_ptr field in struct net_device (this
 * is intentional so it can be allocated along with the netdev.)
 * It need not be registered then as netdev registration will
 * be intercepted by cfg80211 to see the new wireless device.
 *
 * For non-netdev uses, it must also be allocated by the driver
 * in response to the cfg80211 callbacks that require it, as
 * there's no netdev registration in that case it may not be
 * allocated outside of callback operations that return it.
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3374 3375 3376 3377
 *
 * @wiphy: pointer to hardware description
 * @iftype: interface type
 * @list: (private) Used to collect the interfaces
3378 3379 3380
 * @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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3381
 * @current_bss: (private) Used by the internal configuration code
3382 3383
 * @chandef: (private) Used by the internal configuration code to track
 *	the user-set channel definition.
J
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3384
 * @preset_chandef: (private) Used by the internal configuration code to
3385
 *	track the channel to be used for AP later
J
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3386 3387 3388
 * @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
3389 3390
 * @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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3391
 * @wext: (private) Used by the internal wireless extensions compat code
3392 3393 3394 3395
 * @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
3396 3397
 * @mgmt_registrations: list of registrations for management frames
 * @mgmt_registrations_lock: lock for the list
3398 3399
 * @mtx: mutex used to lock data in this struct, may be used by drivers
 *	and some API functions require it held
3400 3401
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
3402 3403
 * @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
3404 3405
 * @cac_started: true if DFS channel availability check has been started
 * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
3406
 * @cac_time_ms: CAC time in ms
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3407 3408 3409 3410 3411 3412 3413
 * @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
3414
 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel
J
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3415 3416
 * @event_list: (private) list for internal event processing
 * @event_lock: (private) lock for event list
3417
 * @owner_nlportid: (private) owner socket port ID
J
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3418 3419 3420 3421 3422
 */
struct wireless_dev {
	struct wiphy *wiphy;
	enum nl80211_iftype iftype;

J
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3423
	/* the remainder of this struct should be private to cfg80211 */
J
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3424 3425 3426
	struct list_head list;
	struct net_device *netdev;

3427 3428
	u32 identifier;

3429 3430
	struct list_head mgmt_registrations;
	spinlock_t mgmt_registrations_lock;
3431

J
Johannes Berg 已提交
3432 3433
	struct mutex mtx;

3434 3435 3436
	bool use_4addr, p2p_started;

	u8 address[ETH_ALEN] __aligned(sizeof(u16));
3437

S
Samuel Ortiz 已提交
3438
	/* currently used for IBSS and SME - might be rearranged later */
J
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3439
	u8 ssid[IEEE80211_MAX_SSID_LEN];
3440
	u8 ssid_len, mesh_id_len, mesh_id_up_len;
3441
	struct cfg80211_conn *conn;
J
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3442
	struct cfg80211_cached_keys *connect_keys;
J
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3443

J
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3444 3445 3446
	struct list_head event_list;
	spinlock_t event_lock;

J
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3447
	struct cfg80211_internal_bss *current_bss; /* associated / joined */
3448
	struct cfg80211_chan_def preset_chandef;
3449
	struct cfg80211_chan_def chandef;
3450

3451
	bool ibss_fixed;
3452
	bool ibss_dfs_possible;
3453

K
Kalle Valo 已提交
3454 3455 3456
	bool ps;
	int ps_timeout;

3457 3458
	int beacon_interval;

3459
	u32 ap_unexpected_nlportid;
3460

3461 3462
	bool cac_started;
	unsigned long cac_start_time;
3463
	unsigned int cac_time_ms;
3464

3465 3466
	u32 owner_nlportid;

J
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3467
#ifdef CONFIG_CFG80211_WEXT
J
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3468
	/* wext data */
3469
	struct {
3470 3471
		struct cfg80211_ibss_params ibss;
		struct cfg80211_connect_params connect;
J
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3472
		struct cfg80211_cached_keys *keys;
3473
		const u8 *ie;
3474
		size_t ie_len;
3475
		u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
3476
		u8 ssid[IEEE80211_MAX_SSID_LEN];
3477
		s8 default_key, default_mgmt_key;
K
Kalle Valo 已提交
3478
		bool prev_bssid_valid;
3479
	} wext;
J
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3480 3481 3482
#endif
};

3483 3484 3485 3486 3487 3488 3489
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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3490 3491 3492 3493
/**
 * wdev_priv - return wiphy priv from wireless_dev
 *
 * @wdev: The wireless device whose wiphy's priv pointer to return
3494
 * Return: The wiphy priv of @wdev.
J
Johannes Berg 已提交
3495 3496 3497 3498 3499 3500 3501
 */
static inline void *wdev_priv(struct wireless_dev *wdev)
{
	BUG_ON(!wdev);
	return wiphy_priv(wdev->wiphy);
}

J
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3502 3503 3504 3505
/**
 * DOC: Utility functions
 *
 * cfg80211 offers a number of utility functions that can be useful.
J
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3506 3507 3508 3509
 */

/**
 * ieee80211_channel_to_frequency - convert channel number to frequency
J
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3510
 * @chan: channel number
3511
 * @band: band, necessary due to channel number overlap
3512
 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
J
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3513
 */
3514
int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
J
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3515 3516 3517

/**
 * ieee80211_frequency_to_channel - convert frequency to channel number
J
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3518
 * @freq: center frequency
3519
 * Return: The corresponding channel, or 0 if the conversion failed.
J
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3520
 */
3521
int ieee80211_frequency_to_channel(int freq);
J
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3522 3523 3524 3525 3526 3527 3528 3529

/*
 * 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.
 */
3530 3531
struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
						  int freq);
J
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3532 3533
/**
 * ieee80211_get_channel - get channel struct from wiphy for specified frequency
J
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3534 3535
 * @wiphy: the struct wiphy to get the channel for
 * @freq: the center frequency of the channel
3536
 * Return: The channel struct from @wiphy at @freq.
J
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3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550
 */
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
 *
3551 3552 3553 3554
 * 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);

3560 3561 3562
/**
 * ieee80211_mandatory_rates - get mandatory rates for a given band
 * @sband: the band to look for rates in
3563
 * @scan_width: width of the control channel
3564 3565 3566 3567
 *
 * 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.
 */
3568 3569
u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
			      enum nl80211_bss_scan_width scan_width);
3570

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3571 3572 3573 3574 3575 3576 3577
/*
 * Radiotap parsing functions -- for controlled injection support
 *
 * Implemented in net/wireless/radiotap.c
 * Documentation in Documentation/networking/radiotap-headers.txt
 */

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3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593
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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3594 3595
/**
 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
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3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620
 * @this_arg_index: index of current arg, valid after each successful call
 *	to ieee80211_radiotap_iterator_next()
 * @this_arg: pointer to current radiotap arg; it is valid after each
 *	call to ieee80211_radiotap_iterator_next() but also after
 *	ieee80211_radiotap_iterator_init() where it will point to
 *	the beginning of the actual data portion
 * @this_arg_size: length of the current arg, for convenience
 * @current_namespace: pointer to the current namespace definition
 *	(or internally %NULL if the current namespace is unknown)
 * @is_radiotap_ns: indicates whether the current namespace is the default
 *	radiotap namespace or not
 *
 * @_rtheader: pointer to the radiotap header we are walking through
 * @_max_length: length of radiotap header in cpu byte ordering
 * @_arg_index: next argument index
 * @_arg: next argument pointer
 * @_next_bitmap: internal pointer to next present u32
 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
 * @_vns: vendor namespace definitions
 * @_next_ns_data: beginning of the next namespace's data
 * @_reset_on_ext: internal; reset the arg index to 0 when going to the
 *	next bitmap word
 *
 * Describes the radiotap parser state. Fields prefixed with an underscore
 * must not be used by users of the parser, only by the parser internally.
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 */

struct ieee80211_radiotap_iterator {
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3624 3625 3626 3627 3628
	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;
3629
	__le32 *_next_bitmap;
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3630 3631

	unsigned char *this_arg;
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3632
	int this_arg_index;
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3633
	int this_arg_size;
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3634

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3635 3636 3637 3638 3639 3640
	int is_radiotap_ns;

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

3643 3644 3645 3646 3647
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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3649 3650
int
ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator);
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3651

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3653 3654 3655 3656 3657 3658
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
 *
3659 3660
 * @skb: the frame
 *
3661
 * Given an skb with a raw 802.11 header at the data pointer this function
3662
 * returns the 802.11 header length.
3663
 *
3664 3665 3666
 * 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.
3667 3668 3669 3670 3671 3672
 */
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
3673
 * Return: The header length in bytes.
3674
 */
3675
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
3676

3677 3678 3679 3680
/**
 * ieee80211_get_mesh_hdrlen - get mesh extension header length
 * @meshhdr: the mesh extension header, only the flags field
 *	(first byte) will be accessed
3681
 * Return: The length of the extension header, which is always at
3682 3683 3684 3685
 * 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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3686 3687 3688 3689 3690 3691 3692 3693
/**
 * 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.
 */

3694 3695 3696 3697 3698
/**
 * 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
3699
 * Return: 0 on success. Non-zero on error.
3700
 */
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int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
3702 3703 3704 3705 3706 3707 3708 3709 3710
			   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
3711
 * Return: 0 on success, or a negative error code.
3712
 */
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int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
3714 3715
			     enum nl80211_iftype iftype, const u8 *bssid,
			     bool qos);
3716

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3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729
/**
 * 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.
3730
 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header.
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3731 3732 3733
 */
void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
			      const u8 *addr, enum nl80211_iftype iftype,
3734 3735
			      const unsigned int extra_headroom,
			      bool has_80211_header);
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3737 3738 3739
/**
 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
 * @skb: the data frame
3740
 * @qos_map: Interworking QoS mapping or %NULL if not in use
3741
 * Return: The 802.1p/1d tag.
3742
 */
3743 3744
unsigned int cfg80211_classify8021d(struct sk_buff *skb,
				    struct cfg80211_qos_map *qos_map);
3745

3746 3747 3748 3749 3750 3751 3752
/**
 * cfg80211_find_ie - find information element in data
 *
 * @eid: element ID
 * @ies: data consisting of IEs
 * @len: length of data
 *
3753 3754 3755 3756 3757 3758 3759
 * 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.
3760 3761 3762
 */
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);

3763 3764 3765 3766 3767 3768 3769 3770
/**
 * 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
 *
3771 3772 3773 3774 3775 3776 3777
 * 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.
3778 3779 3780 3781
 */
const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
				  const u8 *ies, int len);

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

/**
 * regulatory_hint - driver hint to the wireless core a regulatory domain
 * @wiphy: the wireless device giving the hint (used only for reporting
 *	conflicts)
 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain
 * 	should be in. If @rd is set this should be NULL. Note that if you
 * 	set this to NULL you should still set rd->alpha2 to some accepted
 * 	alpha2.
 *
 * Wireless drivers can use this function to hint to the wireless core
 * what it believes should be the current regulatory domain by
 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory
 * domain should be in or by providing a completely build regulatory domain.
 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried
 * for a regulatory domain structure for the respective country.
 *
 * The wiphy must have been registered to cfg80211 prior to this call.
 * For cfg80211 drivers this means you must first use wiphy_register(),
 * for mac80211 drivers you must first use ieee80211_register_hw().
 *
 * Drivers should check the return value, its possible you can get
 * an -ENOMEM.
3810 3811
 *
 * Return: 0 on success. -ENOMEM.
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3812
 */
3813
int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
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3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828
/**
 * 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);

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3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839
/**
 * 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.
3840
 * Drivers using this for a wiphy should also set the wiphy flag
3841
 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy
3842
 * that called this helper.
J
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3843
 */
3844 3845
void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
				   const struct ieee80211_regdomain *regd);
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3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856

/**
 * 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.
 *
3857 3858 3859 3860 3861 3862 3863
 * Return: A valid pointer, or, when an error occurs, for example if no rule
 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to
 * check and PTR_ERR() to obtain the numeric return value. The numeric return
 * value will be -ERANGE if we determine the given center_freq does not even
 * have a regulatory rule for a frequency range in the center_freq's band.
 * See freq_in_rule_band() for our current definition of a band -- this is
 * purely subjective and right now it's 802.11 specific.
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3864
 */
3865 3866
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
					       u32 center_freq);
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3867

3868 3869 3870 3871 3872 3873 3874 3875 3876
/**
 * 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);

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3877 3878 3879 3880 3881
/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

3882 3883 3884 3885 3886 3887 3888 3889 3890
/**
 * 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);

3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908
/**
 * 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);

3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919
/**
 * 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);
3920

3921
/**
3922
 * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame
3923 3924
 *
 * @wiphy: the wiphy reporting the BSS
3925
 * @rx_channel: The channel the frame was received on
3926
 * @scan_width: width of the control channel
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3927 3928
 * @mgmt: the management frame (probe response or beacon)
 * @len: length of the management frame
J
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3929
 * @signal: the signal strength, type depends on the wiphy's signal_type
3930 3931 3932 3933
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
3934
 *
3935 3936
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
3937
 */
3938
struct cfg80211_bss * __must_check
3939
cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
3940
				struct ieee80211_channel *rx_channel,
3941 3942 3943 3944 3945
				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
3946
cfg80211_inform_bss_frame(struct wiphy *wiphy,
3947
			  struct ieee80211_channel *rx_channel,
3948
			  struct ieee80211_mgmt *mgmt, size_t len,
3949 3950
			  s32 signal, gfp_t gfp)
{
3951
	return cfg80211_inform_bss_width_frame(wiphy, rx_channel,
3952 3953 3954
					       NL80211_BSS_CHAN_WIDTH_20,
					       mgmt, len, signal, gfp);
}
3955

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3956
/**
3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970
 * 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
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3971 3972
 *
 * @wiphy: the wiphy reporting the BSS
3973
 * @rx_channel: The channel the frame was received on
3974
 * @scan_width: width of the control channel
3975
 * @ftype: frame type (if known)
J
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3976
 * @bssid: the BSSID of the BSS
3977
 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
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3978 3979 3980 3981 3982 3983 3984 3985 3986
 * @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.
3987
 *
3988 3989
 * Return: A referenced struct, must be released with cfg80211_put_bss()!
 * Or %NULL on error.
J
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3990
 */
3991
struct cfg80211_bss * __must_check
3992
cfg80211_inform_bss_width(struct wiphy *wiphy,
3993
			  struct ieee80211_channel *rx_channel,
3994
			  enum nl80211_bss_scan_width scan_width,
3995
			  enum cfg80211_bss_frame_type ftype,
3996 3997 3998 3999 4000
			  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
4001
cfg80211_inform_bss(struct wiphy *wiphy,
4002
		    struct ieee80211_channel *rx_channel,
4003
		    enum cfg80211_bss_frame_type ftype,
4004 4005
		    const u8 *bssid, u64 tsf, u16 capability,
		    u16 beacon_interval, const u8 *ie, size_t ielen,
4006 4007
		    s32 signal, gfp_t gfp)
{
4008
	return cfg80211_inform_bss_width(wiphy, rx_channel,
4009
					 NL80211_BSS_CHAN_WIDTH_20, ftype,
4010 4011 4012 4013
					 bssid, tsf, capability,
					 beacon_interval, ie, ielen, signal,
					 gfp);
}
4014

4015 4016 4017
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028
				      const u8 *ssid, size_t ssid_len,
				      u16 capa_mask, u16 capa_val);
static inline struct cfg80211_bss *
cfg80211_get_ibss(struct wiphy *wiphy,
		  struct ieee80211_channel *channel,
		  const u8 *ssid, size_t ssid_len)
{
	return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len,
				WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
}

4029 4030
/**
 * cfg80211_ref_bss - reference BSS struct
4031
 * @wiphy: the wiphy this BSS struct belongs to
4032 4033 4034 4035
 * @bss: the BSS struct to reference
 *
 * Increments the refcount of the given BSS struct.
 */
4036
void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
4037 4038 4039

/**
 * cfg80211_put_bss - unref BSS struct
4040
 * @wiphy: the wiphy this BSS struct belongs to
4041 4042 4043 4044
 * @bss: the BSS struct
 *
 * Decrements the refcount of the given BSS struct.
 */
4045
void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
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4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057
/**
 * 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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4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071
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;
	}
}

4072
/**
4073
 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
4074 4075 4076 4077
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089
 * 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.
4090
 */
4091
void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
4092

4093
/**
4094
 * cfg80211_auth_timeout - notification of timed out authentication
4095 4096
 * @dev: network device
 * @addr: The MAC address of the device with which the authentication timed out
4097
 *
4098 4099
 * This function may sleep. The caller must hold the corresponding wdev's
 * mutex.
4100
 */
4101
void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
4102

4103
/**
4104
 * cfg80211_rx_assoc_resp - notification of processed association response
4105
 * @dev: network device
4106 4107 4108
 * @bss: the BSS that association was requested with, ownership of the pointer
 *	moves to cfg80211 in this call
 * @buf: authentication frame (header + body)
4109
 * @len: length of the frame data
4110
 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a.
4111
 *
4112 4113 4114 4115
 * 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.
4116
 */
4117 4118
void cfg80211_rx_assoc_resp(struct net_device *dev,
			    struct cfg80211_bss *bss,
4119 4120
			    const u8 *buf, size_t len,
			    int uapsd_queues);
4121

4122
/**
4123
 * cfg80211_assoc_timeout - notification of timed out association
4124
 * @dev: network device
4125
 * @bss: The BSS entry with which association timed out.
4126
 *
4127
 * This function may sleep. The caller must hold the corresponding wdev's mutex.
4128
 */
4129
void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss);
4130

4131
/**
4132
 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
4133
 * @dev: network device
4134
 * @buf: 802.11 frame (header + body)
4135 4136 4137
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
4138
 * station mode. This includes both received deauthentication frames and
4139 4140
 * locally generated ones. This function may sleep. The caller must hold the
 * corresponding wdev's mutex.
4141
 */
4142
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
4143

4144
/**
4145
 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
4146 4147 4148 4149
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
4150 4151
 * This function is called whenever a received deauthentication or dissassoc
 * frame has been dropped in station mode because of MFP being used but the
4152 4153
 * frame was not protected. This function may sleep.
 */
4154 4155
void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev,
				  const u8 *buf, size_t len);
4156

4157 4158 4159 4160 4161
/**
 * 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
4162
 * @key_id: Key identifier (0..3). Can be -1 if missing.
4163
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
4164
 * @gfp: allocation flags
4165 4166 4167 4168 4169 4170 4171
 *
 * 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,
4172
				  const u8 *tsc, gfp_t gfp);
4173

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Johannes Berg 已提交
4174 4175 4176 4177 4178
/**
 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
 *
 * @dev: network device
 * @bssid: the BSSID of the IBSS joined
4179
 * @channel: the channel of the IBSS joined
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Johannes Berg 已提交
4180 4181 4182 4183 4184 4185 4186 4187 4188
 * @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.
 */
4189 4190
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
			  struct ieee80211_channel *channel, gfp_t gfp);
J
Johannes Berg 已提交
4191

4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207
/**
 * 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
4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221
/**
 * 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
4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240
/**
 * 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);

J
Johannes Berg 已提交
4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265
/**
 * 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);

4266 4267 4268 4269 4270 4271 4272 4273
struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
					   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
4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317
/**
 * 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);

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 4349 4350 4351 4352 4353 4354 4355
/**
 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb
 * @wiphy: the wiphy
 * @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.
 *
 * When done filling the skb, call cfg80211_vendor_event() with the
 * skb to send the event.
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
 */
static inline struct sk_buff *
cfg80211_vendor_event_alloc(struct wiphy *wiphy, int approxlen,
			    int event_idx, gfp_t gfp)
{
	return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_VENDOR,
					  NL80211_ATTR_VENDOR_DATA,
					  event_idx, approxlen, gfp);
}

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

4356
#ifdef CONFIG_NL80211_TESTMODE
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Johannes Berg 已提交
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367
/**
 * 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.
 */

4368 4369 4370 4371 4372 4373 4374 4375 4376 4377
/**
 * 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.
 *
4378 4379 4380 4381 4382 4383 4384
 * 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.
4385 4386 4387
 *
 * When done, call cfg80211_testmode_reply() with the skb and return
 * its error code as the result of the @testmode_cmd operation.
4388 4389
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
4390
 */
J
Johannes Berg 已提交
4391 4392 4393 4394 4395 4396
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);
}
4397 4398 4399 4400 4401 4402

/**
 * cfg80211_testmode_reply - send the reply skb
 * @skb: The skb, must have been allocated with
 *	cfg80211_testmode_alloc_reply_skb()
 *
4403 4404 4405 4406 4407 4408
 * 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.
4409
 */
J
Johannes Berg 已提交
4410 4411 4412 4413
static inline int cfg80211_testmode_reply(struct sk_buff *skb)
{
	return cfg80211_vendor_cmd_reply(skb);
}
4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424

/**
 * 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.
 *
4425 4426 4427 4428 4429
 * 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.
4430 4431 4432
 *
 * When done filling the skb, call cfg80211_testmode_event() with the
 * skb to send the event.
4433 4434
 *
 * Return: An allocated and pre-filled skb. %NULL if any errors happen.
4435
 */
4436 4437 4438 4439 4440 4441 4442
static inline struct sk_buff *
cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp)
{
	return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_TESTMODE,
					  NL80211_ATTR_TESTDATA, -1,
					  approxlen, gfp);
}
4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453

/**
 * 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.
 */
4454 4455 4456 4457
static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
{
	__cfg80211_send_event_skb(skb, gfp);
}
4458 4459

#define CFG80211_TESTMODE_CMD(cmd)	.testmode_cmd = (cmd),
W
Wey-Yi Guy 已提交
4460
#define CFG80211_TESTMODE_DUMP(cmd)	.testmode_dump = (cmd),
4461 4462
#else
#define CFG80211_TESTMODE_CMD(cmd)
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Wey-Yi Guy 已提交
4463
#define CFG80211_TESTMODE_DUMP(cmd)
4464 4465
#endif

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Samuel Ortiz 已提交
4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491
/**
 * 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
4492
 * @channel: the channel of the new AP
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Samuel Ortiz 已提交
4493 4494 4495 4496 4497 4498 4499 4500 4501 4502
 * @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.
 */
4503 4504 4505
void cfg80211_roamed(struct net_device *dev,
		     struct ieee80211_channel *channel,
		     const u8 *bssid,
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Samuel Ortiz 已提交
4506 4507 4508
		     const u8 *req_ie, size_t req_ie_len,
		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);

4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534
/**
 * 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
4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547
/**
 * cfg80211_disconnected - notify cfg80211 that connection was dropped
 *
 * @dev: network device
 * @ie: information elements of the deauth/disassoc frame (may be %NULL)
 * @ie_len: length of IEs
 * @reason: reason code for the disconnection, set it to 0 if unknown
 * @gfp: allocation flags
 *
 * After it calls this function, the driver should enter an idle state
 * and not try to connect to any AP any more.
 */
void cfg80211_disconnected(struct net_device *dev, u16 reason,
4548
			   const u8 *ie, size_t ie_len, gfp_t gfp);
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Samuel Ortiz 已提交
4549

4550 4551
/**
 * cfg80211_ready_on_channel - notification of remain_on_channel start
4552
 * @wdev: wireless device
4553 4554 4555 4556 4557 4558
 * @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
 */
4559
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
4560 4561 4562 4563 4564
			       struct ieee80211_channel *chan,
			       unsigned int duration, gfp_t gfp);

/**
 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired
4565
 * @wdev: wireless device
4566 4567 4568 4569
 * @cookie: the request cookie
 * @chan: The current channel (from remain_on_channel request)
 * @gfp: allocation flags
 */
4570
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
4571 4572
					struct ieee80211_channel *chan,
					gfp_t gfp);
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Samuel Ortiz 已提交
4573

4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585

/**
 * 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);

4586 4587 4588 4589 4590 4591 4592 4593 4594
/**
 * cfg80211_del_sta - notify userspace about deletion of a station
 *
 * @dev: the netdev
 * @mac_addr: the station's address
 * @gfp: allocation flags
 */
void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp);

4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613
/**
 * 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);

4614
/**
4615
 * cfg80211_rx_mgmt - notification of received, unprocessed management frame
4616
 * @wdev: wireless device receiving the frame
4617
 * @freq: Frequency on which the frame was received in MHz
4618
 * @sig_dbm: signal strength in mBm, or 0 if unknown
4619
 * @buf: Management frame (header + body)
4620
 * @len: length of the frame data
4621
 * @flags: flags, as defined in enum nl80211_rxmgmt_flags
4622
 *
4623 4624 4625 4626
 * 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.
4627 4628 4629
 * 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.
4630
 */
4631
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
4632
		      const u8 *buf, size_t len, u32 flags);
4633 4634

/**
4635
 * cfg80211_mgmt_tx_status - notification of TX status for management frame
4636
 * @wdev: wireless device receiving the frame
4637 4638
 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
 * @buf: Management frame (header + body)
4639 4640 4641 4642
 * @len: length of the frame data
 * @ack: Whether frame was acknowledged
 * @gfp: context flags
 *
4643 4644
 * 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
4645 4646
 * transmission attempt.
 */
4647
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
4648
			     const u8 *buf, size_t len, bool ack, gfp_t gfp);
4649

4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663

/**
 * 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);

4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675
/**
 * 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);

4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690
/**
 * 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);

4691 4692 4693 4694 4695 4696 4697 4698 4699
/**
 * 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);

4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726
/**
 * 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);


4727 4728 4729 4730 4731
/**
 * 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
4732
 * @gfp: allocation flags
4733 4734 4735 4736
 */
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
			       const u8 *replay_ctr, gfp_t gfp);

4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747
/**
 * 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);

4748 4749 4750 4751 4752 4753 4754 4755 4756
/**
 * 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.
4757
 * Return: %true if the frame was passed to userspace (or this failed
4758 4759 4760 4761 4762
 * for a reason other than not having a subscription.)
 */
bool cfg80211_rx_spurious_frame(struct net_device *dev,
				const u8 *addr, gfp_t gfp);

4763 4764 4765 4766 4767 4768 4769 4770 4771 4772
/**
 * 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.
4773
 * Return: %true if the frame was passed to userspace (or this failed
4774 4775 4776 4777 4778
 * 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
4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789
/**
 * 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);

4790 4791 4792 4793 4794 4795
/**
 * 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
4796
 * @sig_dbm: signal strength in mBm, or 0 if unknown
4797 4798 4799 4800 4801 4802 4803
 *
 * 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,
4804
				 int freq, int sig_dbm);
4805

4806
/**
4807
 * cfg80211_reg_can_beacon - check if beaconing is allowed
4808
 * @wiphy: the wiphy
4809
 * @chandef: the channel definition
4810
 * @iftype: interface type
4811
 *
4812 4813
 * 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.)
4814
 */
4815
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
4816 4817
			     struct cfg80211_chan_def *chandef,
			     enum nl80211_iftype iftype);
4818

4819 4820 4821
/*
 * cfg80211_ch_switch_notify - update wdev channel and notify userspace
 * @dev: the device which switched channels
4822
 * @chandef: the new channel definition
4823
 *
4824 4825
 * Caller must acquire wdev_lock, therefore must only be called from sleepable
 * driver context!
4826
 */
4827 4828
void cfg80211_ch_switch_notify(struct net_device *dev,
			       struct cfg80211_chan_def *chandef);
4829

4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843
/*
 * 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);

4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854
/**
 * 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);

4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873
/*
 * 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);

4874 4875 4876 4877 4878 4879
/*
 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
 * @rate: given rate_info to calculate bitrate from
 *
 * return 0 if MCS index >= 32
 */
4880
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
4881

4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897
/**
 * 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);

4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921
/**
 * 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);

4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933
/**
 * 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.
 *
4934 4935 4936
 * 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).
4937
 */
4938 4939 4940
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
			  enum ieee80211_p2p_attr_id attr,
			  u8 *buf, unsigned int bufsize);
4941

4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956
/**
 * 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);

4957 4958 4959 4960
/**
 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
 *
 * @wdev: the wireless device for which critical protocol is stopped.
4961
 * @gfp: allocation flags
4962 4963 4964 4965 4966 4967 4968
 *
 * 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);

4969 4970 4971 4972 4973 4974 4975 4976
/**
 * 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);

4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998
/**
 * 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]);

4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025
/**
 * 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);

5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040
/*
 * 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);

5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054
/**
 * 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);

5055 5056 5057 5058

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

5059 5060 5061 5062 5063
/* Logging, debugging and troubleshooting/diagnostic helpers. */

/* wiphy_printk helpers, similar to dev_printk */

#define wiphy_printk(level, wiphy, format, args...)		\
5064
	dev_printk(level, &(wiphy)->dev, format, ##args)
5065
#define wiphy_emerg(wiphy, format, args...)			\
5066
	dev_emerg(&(wiphy)->dev, format, ##args)
5067
#define wiphy_alert(wiphy, format, args...)			\
5068
	dev_alert(&(wiphy)->dev, format, ##args)
5069
#define wiphy_crit(wiphy, format, args...)			\
5070
	dev_crit(&(wiphy)->dev, format, ##args)
5071
#define wiphy_err(wiphy, format, args...)			\
5072
	dev_err(&(wiphy)->dev, format, ##args)
5073
#define wiphy_warn(wiphy, format, args...)			\
5074
	dev_warn(&(wiphy)->dev, format, ##args)
5075
#define wiphy_notice(wiphy, format, args...)			\
5076
	dev_notice(&(wiphy)->dev, format, ##args)
5077
#define wiphy_info(wiphy, format, args...)			\
5078
	dev_info(&(wiphy)->dev, format, ##args)
5079

5080
#define wiphy_debug(wiphy, format, args...)			\
5081
	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
5082

5083
#define wiphy_dbg(wiphy, format, args...)			\
5084
	dev_dbg(&(wiphy)->dev, format, ##args)
5085 5086 5087 5088 5089 5090 5091 5092

#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);	\
5093
	0;								\
5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104
})
#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);

5105
#endif /* __NET_CFG80211_H */