cfg80211.h 129 KB
Newer Older
1 2
#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
Johannes Berg's avatar
Johannes Berg committed
3 4 5
/*
 * 802.11 device and configuration interface
 *
6
 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
Johannes Berg's avatar
Johannes Berg committed
7 8 9 10 11
 *
 * 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.
 */
12

Johannes Berg's avatar
Johannes Berg committed
13 14 15
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
16
#include <linux/bug.h>
17 18
#include <linux/netlink.h>
#include <linux/skbuff.h>
19
#include <linux/nl80211.h>
20 21
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
Johannes Berg's avatar
Johannes Berg committed
22 23
#include <net/regulatory.h>

24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
/**
 * 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.
 */

61
/*
Johannes Berg's avatar
Johannes Berg committed
62 63 64 65 66 67 68 69
 * wireless hardware capability structures
 */

/**
 * enum ieee80211_band - supported frequency bands
 *
 * The bands are assigned this way because the supported
 * bitrates differ in these bands.
70
 *
Johannes Berg's avatar
Johannes Berg committed
71 72
 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
73
 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz)
Johannes Berg's avatar
Johannes Berg committed
74
 * @IEEE80211_NUM_BANDS: number of defined bands
75
 */
Johannes Berg's avatar
Johannes Berg committed
76
enum ieee80211_band {
77 78
	IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
	IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
79
	IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ,
Johannes Berg's avatar
Johannes Berg committed
80 81 82 83

	/* keep last */
	IEEE80211_NUM_BANDS
};
84

85
/**
Johannes Berg's avatar
Johannes Berg committed
86 87 88 89 90 91 92 93 94
 * enum ieee80211_channel_flags - channel flags
 *
 * Channel flags set by the regulatory control code.
 *
 * @IEEE80211_CHAN_DISABLED: This channel is disabled.
 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted
 *	on this channel.
 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel.
 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
95
 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
Johannes Berg's avatar
Johannes Berg committed
96
 * 	is not permitted.
97
 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
Johannes Berg's avatar
Johannes Berg committed
98
 * 	is not permitted.
99
 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
100
 */
Johannes Berg's avatar
Johannes Berg committed
101 102 103 104 105
enum ieee80211_channel_flags {
	IEEE80211_CHAN_DISABLED		= 1<<0,
	IEEE80211_CHAN_PASSIVE_SCAN	= 1<<1,
	IEEE80211_CHAN_NO_IBSS		= 1<<2,
	IEEE80211_CHAN_RADAR		= 1<<3,
106 107
	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
108
	IEEE80211_CHAN_NO_OFDM		= 1<<6,
109 110
};

111
#define IEEE80211_CHAN_NO_HT40 \
112
	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
113

Johannes Berg's avatar
Johannes Berg committed
114 115 116 117 118 119 120 121 122 123 124 125 126 127
/**
 * 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)
128
 * @max_reg_power: maximum regulatory transmission power (in dBm)
Johannes Berg's avatar
Johannes Berg committed
129 130
 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
131
 *	to enable this, this is useful only on 5 GHz band.
Johannes Berg's avatar
Johannes Berg committed
132 133
 * @orig_mag: internal use
 * @orig_mpwr: internal use
Andy Green's avatar
Andy Green committed
134
 */
Johannes Berg's avatar
Johannes Berg committed
135 136 137 138 139 140 141
struct ieee80211_channel {
	enum ieee80211_band band;
	u16 center_freq;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
142
	int max_reg_power;
Johannes Berg's avatar
Johannes Berg committed
143 144 145 146 147
	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
};

Andy Green's avatar
Andy Green committed
148
/**
Johannes Berg's avatar
Johannes Berg committed
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
 * 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.
Andy Green's avatar
Andy Green committed
168
 */
Johannes Berg's avatar
Johannes Berg committed
169 170 171 172 173 174 175
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,
};
Andy Green's avatar
Andy Green committed
176

Johannes Berg's avatar
Johannes Berg committed
177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
/**
 * 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;
};
Andy Green's avatar
Andy Green committed
196

Johannes Berg's avatar
Johannes Berg committed
197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
/**
 * 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;
Andy Green's avatar
Andy Green committed
215 216
};

217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232
/**
 * 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;
};

Johannes Berg's avatar
Johannes Berg committed
233 234 235 236 237 238 239 240 241 242 243 244 245 246
/**
 * 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
Johannes Berg's avatar
Johannes Berg committed
247
 * @ht_cap: HT capabilities in this band
248
 * @vht_cap: VHT capabilities in this band
Johannes Berg's avatar
Johannes Berg committed
249 250 251 252 253 254 255 256
 */
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;
257
	struct ieee80211_sta_vht_cap vht_cap;
Johannes Berg's avatar
Johannes Berg committed
258
};
Andy Green's avatar
Andy Green committed
259

Johannes Berg's avatar
Johannes Berg committed
260 261 262
/*
 * Wireless hardware/device configuration structures and methods
 */
Andy Green's avatar
Andy Green committed
263

264 265 266 267 268 269 270 271 272 273 274 275 276 277 278
/**
 * 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.
 */

Johannes Berg's avatar
Johannes Berg committed
279 280
/**
 * struct vif_params - describes virtual interface parameters
281
 * @use_4addr: use 4-address frames
Johannes Berg's avatar
Johannes Berg committed
282 283
 */
struct vif_params {
284
       int use_4addr;
Johannes Berg's avatar
Johannes Berg committed
285
};
Andy Green's avatar
Andy Green committed
286

Johannes Berg's avatar
Johannes Berg committed
287
/**
288 289 290 291 292 293 294 295 296 297
 * 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.
Johannes Berg's avatar
Johannes Berg committed
298
 * @seq_len: length of @seq.
299 300 301 302 303 304 305 306 307
 */
struct key_params {
	u8 *key;
	u8 *seq;
	int key_len;
	int seq_len;
	u32 cipher;
};

308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
/**
 * struct cfg80211_chan_def - channel definition
 * @chan: the (control) channel
 * @_type: the channel type, don't use this field,
 *	use cfg80211_get_chandef_type() if needed.
 */
struct cfg80211_chan_def {
	struct ieee80211_channel *chan;
	enum nl80211_channel_type _type;
};

static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
	return chandef->_type;
}

325 326 327
/**
 * enum survey_info_flags - survey information flags
 *
Johannes Berg's avatar
Johannes Berg committed
328
 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
329
 * @SURVEY_INFO_IN_USE: channel is currently being used
330 331 332 333 334
 * @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
Johannes Berg's avatar
Johannes Berg committed
335
 *
336 337 338 339 340
 * 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,
341
	SURVEY_INFO_IN_USE = 1<<1,
342 343 344 345 346
	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,
347 348 349 350 351 352 353 354 355
};

/**
 * struct survey_info - channel survey response
 *
 * @channel: the channel this survey record reports, mandatory
 * @filled: bitflag of flags from &enum survey_info_flags
 * @noise: channel noise in dBm. This and all following fields are
 *     optional
356 357 358 359 360
 * @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
361
 *
Johannes Berg's avatar
Johannes Berg committed
362 363
 * Used by dump_survey() to report back per-channel survey information.
 *
364 365 366 367 368
 * This structure can later be expanded with things like
 * channel duty cycle etc.
 */
struct survey_info {
	struct ieee80211_channel *channel;
369 370 371 372 373
	u64 channel_time;
	u64 channel_time_busy;
	u64 channel_time_ext_busy;
	u64 channel_time_rx;
	u64 channel_time_tx;
374 375 376 377
	u32 filled;
	s8 noise;
};

378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407
/**
 * 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;
};

408
/**
409
 * struct cfg80211_beacon_data - beacon data
410 411 412 413 414 415
 * @head: head portion of beacon (before TIM IE)
 *     or %NULL if not changed
 * @tail: tail portion of beacon (after TIM IE)
 *     or %NULL if not changed
 * @head_len: length of @head
 * @tail_len: length of @tail
416 417 418 419 420 421 422 423
 * @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
424 425
 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
426
 */
427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445
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;
};

/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
446
 * @chandef: defines the channel to use
447 448 449 450 451 452 453 454 455 456
 * @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)
457
 * @inactivity_timeout: time in seconds to determine station's inactivity.
458 459
 */
struct cfg80211_ap_settings {
460
	struct cfg80211_chan_def chandef;
461

462 463 464
	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
465 466 467
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
468 469 470
	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
471
	int inactivity_timeout;
472 473
};

474 475 476 477 478
/**
 * enum plink_action - actions to perform in mesh peers
 *
 * @PLINK_ACTION_INVALID: action 0 is reserved
 * @PLINK_ACTION_OPEN: start mesh peer link establishment
Johannes Berg's avatar
Johannes Berg committed
479
 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer
480 481 482 483 484 485 486
 */
enum plink_actions {
	PLINK_ACTION_INVALID,
	PLINK_ACTION_OPEN,
	PLINK_ACTION_BLOCK,
};

487 488 489 490 491 492 493 494 495 496 497
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
 *
 * Not all station parameters have in-band "no change" signalling,
 * for those that don't these flags will are used.
 */
enum station_parameters_apply_mask {
	STATION_PARAM_APPLY_UAPSD = BIT(0),
};

498 499 500 501 502 503 504 505 506
/**
 * 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
507 508 509 510
 * @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_...))
511 512
 * @listen_interval: listen interval or -1 for no change
 * @aid: AID or zero for no change
Johannes Berg's avatar
Johannes Berg committed
513
 * @plink_action: plink action to take
514
 * @plink_state: set the peer link state for a station
Johannes Berg's avatar
Johannes Berg committed
515
 * @ht_capa: HT capabilities of station
516
 * @vht_capa: VHT capabilities of station
517 518 519 520
 * @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)
521 522 523
 * @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
524 525 526 527
 */
struct station_parameters {
	u8 *supported_rates;
	struct net_device *vlan;
528
	u32 sta_flags_mask, sta_flags_set;
529
	u32 sta_modify_mask;
530 531 532
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
533
	u8 plink_action;
534
	u8 plink_state;
535
	struct ieee80211_ht_cap *ht_capa;
536
	struct ieee80211_vht_cap *vht_capa;
537 538
	u8 uapsd_queues;
	u8 max_sp;
539 540
};

541
/**
542
 * enum station_info_flags - station information flags
543
 *
544 545
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
546
 *
547 548 549 550 551 552
 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
 * @STATION_INFO_RX_BYTES: @rx_bytes filled
 * @STATION_INFO_TX_BYTES: @tx_bytes filled
 * @STATION_INFO_LLID: @llid filled
 * @STATION_INFO_PLID: @plid filled
 * @STATION_INFO_PLINK_STATE: @plink_state filled
553
 * @STATION_INFO_SIGNAL: @signal filled
554
 * @STATION_INFO_TX_BITRATE: @txrate fields are filled
555
 *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
556 557
 * @STATION_INFO_RX_PACKETS: @rx_packets filled
 * @STATION_INFO_TX_PACKETS: @tx_packets filled
558 559
 * @STATION_INFO_TX_RETRIES: @tx_retries filled
 * @STATION_INFO_TX_FAILED: @tx_failed filled
560
 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
561
 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
562
 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
563
 * @STATION_INFO_BSS_PARAM: @bss_param filled
564
 * @STATION_INFO_CONNECTED_TIME: @connected_time filled
565
 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
566
 * @STATION_INFO_STA_FLAGS: @sta_flags filled
567
 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
568
 * @STATION_INFO_T_OFFSET: @t_offset filled
569
 */
570 571 572 573 574 575 576
enum station_info_flags {
	STATION_INFO_INACTIVE_TIME	= 1<<0,
	STATION_INFO_RX_BYTES		= 1<<1,
	STATION_INFO_TX_BYTES		= 1<<2,
	STATION_INFO_LLID		= 1<<3,
	STATION_INFO_PLID		= 1<<4,
	STATION_INFO_PLINK_STATE	= 1<<5,
577 578
	STATION_INFO_SIGNAL		= 1<<6,
	STATION_INFO_TX_BITRATE		= 1<<7,
579 580
	STATION_INFO_RX_PACKETS		= 1<<8,
	STATION_INFO_TX_PACKETS		= 1<<9,
581 582
	STATION_INFO_TX_RETRIES		= 1<<10,
	STATION_INFO_TX_FAILED		= 1<<11,
583
	STATION_INFO_RX_DROP_MISC	= 1<<12,
584
	STATION_INFO_SIGNAL_AVG		= 1<<13,
585
	STATION_INFO_RX_BITRATE		= 1<<14,
586
	STATION_INFO_BSS_PARAM          = 1<<15,
587
	STATION_INFO_CONNECTED_TIME	= 1<<16,
588
	STATION_INFO_ASSOC_REQ_IES	= 1<<17,
589
	STATION_INFO_STA_FLAGS		= 1<<18,
590 591
	STATION_INFO_BEACON_LOSS_COUNT	= 1<<19,
	STATION_INFO_T_OFFSET		= 1<<20,
592 593 594 595 596 597 598 599 600 601 602
};

/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled
 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
603
 * @RATE_INFO_FLAGS_60G: 60gHz MCS
604 605 606 607 608
 */
enum rate_info_flags {
	RATE_INFO_FLAGS_MCS		= 1<<0,
	RATE_INFO_FLAGS_40_MHZ_WIDTH	= 1<<1,
	RATE_INFO_FLAGS_SHORT_GI	= 1<<2,
609
	RATE_INFO_FLAGS_60G		= 1<<3,
610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
};

/**
 * 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
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
625 626
};

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657
/**
 * 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;
};

658
/**
659
 * struct station_info - station information
660
 *
661
 * Station information filled by driver for get_station() and dump_station.
662
 *
663
 * @filled: bitflag of flags from &enum station_info_flags
664
 * @connected_time: time(in secs) since a station is last connected
665 666 667
 * @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
668 669 670
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
671 672 673 674
 * @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_.
675 676
 * @txrate: current unicast bitrate from this station
 * @rxrate: current unicast bitrate to this station
677 678
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
679 680
 * @tx_retries: cumulative retry counts
 * @tx_failed: number of failed transmissions (retries exceeded, no ACK)
681
 * @rx_dropped_misc:  Dropped for un-specified reason.
682
 * @bss_param: current BSS parameters
683 684 685 686
 * @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.
687 688 689 690 691
 * @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.
692
 * @sta_flags: station flags mask & values
693
 * @beacon_loss_count: Number of times beacon loss event has triggered.
694
 * @t_offset: Time offset of the station relative to this host.
695
 */
696
struct station_info {
697
	u32 filled;
698
	u32 connected_time;
699 700 701
	u32 inactive_time;
	u32 rx_bytes;
	u32 tx_bytes;
702 703 704
	u16 llid;
	u16 plid;
	u8 plink_state;
705
	s8 signal;
706
	s8 signal_avg;
707
	struct rate_info txrate;
708
	struct rate_info rxrate;
709 710
	u32 rx_packets;
	u32 tx_packets;
711 712
	u32 tx_retries;
	u32 tx_failed;
713
	u32 rx_dropped_misc;
714
	struct sta_bss_parameters bss_param;
715
	struct nl80211_sta_flag_update sta_flags;
716 717

	int generation;
718 719 720

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
721

722
	u32 beacon_loss_count;
723
	s64 t_offset;
724

725 726 727 728
	/*
	 * Note: Add a new enum station_info_flags value for each new field and
	 * use it to check which fields are initialized.
	 */
729 730
};

731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
/**
 * enum monitor_flags - monitor flags
 *
 * Monitor interface configuration flags. Note that these must be the bits
 * according to the nl80211 flags.
 *
 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
 * @MONITOR_FLAG_CONTROL: pass control frames
 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing
 */
enum monitor_flags {
	MONITOR_FLAG_FCSFAIL		= 1<<NL80211_MNTR_FLAG_FCSFAIL,
	MONITOR_FLAG_PLCPFAIL		= 1<<NL80211_MNTR_FLAG_PLCPFAIL,
	MONITOR_FLAG_CONTROL		= 1<<NL80211_MNTR_FLAG_CONTROL,
	MONITOR_FLAG_OTHER_BSS		= 1<<NL80211_MNTR_FLAG_OTHER_BSS,
	MONITOR_FLAG_COOK_FRAMES	= 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
};

751 752 753 754 755 756
/**
 * 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().
 *
Johannes Berg's avatar
Johannes Berg committed
757 758 759 760 761 762 763
 * @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
764 765 766
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
767
	MPATH_INFO_SN			= BIT(1),
768 769 770 771 772 773 774 775 776 777 778 779 780 781
	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
782
 * @sn: target sequence number
783 784 785 786 787
 * @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
788 789 790 791
 * @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.
792 793 794 795
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
796
	u32 sn;
797 798 799 800 801
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
802 803

	int generation;
804 805
};

806 807 808 809 810 811 812 813 814 815 816
/**
 * 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)
817 818 819
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
820
 * @ap_isolate: do not forward packets between connected stations
821 822
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
823 824 825 826 827
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
828 829
	u8 *basic_rates;
	u8 basic_rates_len;
830
	int ap_isolate;
831
	int ht_opmode;
832
};
833

834
/**
835 836 837
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885
 *
 * @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
886 887 888 889 890 891 892
 *
 * @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.
893 894 895
 * @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.
896
 */
897 898 899 900 901
struct mesh_config {
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
902 903 904
	u8 dot11MeshMaxRetries;
	u8 dot11MeshTTL;
	u8 element_ttl;
905
	bool auto_open_plinks;
906
	u32 dot11MeshNbrOffsetMaxNeighbor;
907
	u8 dot11MeshHWMPmaxPREQretries;
908 909 910 911
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
912
	u16 dot11MeshHWMPperrMinInterval;
913
	u16 dot11MeshHWMPnetDiameterTraversalTime;
914
	u8 dot11MeshHWMPRootMode;
915
	u16 dot11MeshHWMPRannInterval;
916
	bool dot11MeshGateAnnouncementProtocol;
917
	bool dot11MeshForwarding;
918
	s32 rssi_threshold;
919
	u16 ht_opmode;
920 921
	u32 dot11MeshHWMPactivePathToRootTimeout;
	u16 dot11MeshHWMProotInterval;
922
	u16 dot11MeshHWMPconfirmationInterval;
923 924
};

925 926
/**
 * struct mesh_setup - 802.11s mesh setup configuration
927
 * @chandef: defines the channel to use
928 929
 * @mesh_id: the mesh ID
 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
930
 * @sync_method: which synchronization method to use
931 932
 * @path_sel_proto: which path selection protocol to use
 * @path_metric: which metric to use
933 934
 * @ie: vendor information elements (optional)
 * @ie_len: length of vendor information elements
935 936
 * @is_authenticated: this mesh requires authentication
 * @is_secure: this mesh uses security
937
 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
938 939 940 941
 *
 * These parameters are fixed when the mesh is created.
 */
struct mesh_setup {
942
	struct cfg80211_chan_def chandef;
943 944
	const u8 *mesh_id;
	u8 mesh_id_len;
945 946 947
	u8 sync_method;
	u8 path_sel_proto;
	u8 path_metric;
948 949
	const u8 *ie;
	u8 ie_len;
950
	bool is_authenticated;
951
	bool is_secure;
952
	int mcast_rate[IEEE80211_NUM_BANDS];
953 954
};

955 956
/**
 * struct ieee80211_txq_params - TX queue parameters
957
 * @ac: AC identifier
958 959 960 961 962 963 964 965
 * @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 {
966
	enum nl80211_ac ac;
967 968 969 970 971 972
	u16 txop;
	u16 cwmin;
	u16 cwmax;
	u8 aifs;
};

973 974 975
/* from net/wireless.h */
struct wiphy;

976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
/**
 * 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.
 */
998

999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
/**
 * 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.
1015
 * @n_channels: total number of channels to scan
1016 1017
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1018
 * @flags: bit field of flags controlling operation
1019
 * @rates: bitmap of rates to advertise for each band
1020
 * @wiphy: the wiphy this was for
1021
 * @scan_start: time (in jiffies) when the scan started
Johannes Berg's avatar
Johannes Berg committed
1022
 * @wdev: the wireless device to scan for
Johannes Berg's avatar
Johannes Berg committed
1023
 * @aborted: (internal) scan request was notified as aborted
1024
 * @no_cck: used to send probe requests at non CCK rate in 2GHz band
1025 1026 1027 1028 1029
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1030
	const u8 *ie;
1031
	size_t ie_len;
1032
	u32 flags;
1033

1034 1035
	u32 rates[IEEE80211_NUM_BANDS];

Johannes Berg's avatar
Johannes Berg committed
1036 1037
	struct wireless_dev *wdev;

1038 1039
	/* internal */
	struct wiphy *wiphy;
1040
	unsigned long scan_start;
Johannes Berg's avatar
Johannes Berg committed
1041
	bool aborted;
1042
	bool no_cck;
1043 1044 1045

	/* keep last */
	struct ieee80211_channel *channels[0];
1046 1047
};

1048 1049 1050 1051 1052 1053 1054 1055 1056
/**
 * struct cfg80211_match_set - sets of attributes to match
 *
 * @ssid: SSID to be matched
 */
struct cfg80211_match_set {
	struct cfg80211_ssid ssid;
};

1057 1058 1059 1060 1061 1062
/**
 * 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
1063
 * @interval: interval between each scheduled scan cycle
1064 1065
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
1066
 * @flags: bit field of flags controlling operation
1067 1068 1069 1070 1071
 * @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
1072 1073 1074
 * @wiphy: the wiphy this was for
 * @dev: the interface
 * @channels: channels to scan
1075
 * @rssi_thold: don't report scan results below this threshold (in s32 dBm)
1076 1077 1078 1079 1080
 */
struct cfg80211_sched_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	u32 n_channels;
1081
	u32 interval;
1082 1083
	const u8 *ie;
	size_t ie_len;
1084
	u32 flags;
1085 1086
	struct cfg80211_match_set *match_sets;
	int n_match_sets;
1087
	s32 rssi_thold;
1088 1089 1090 1091

	/* internal */
	struct wiphy *wiphy;
	struct net_device *dev;
1092
	unsigned long scan_start;
1093 1094 1095 1096 1097

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

1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
/**
 * 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,
};

/**
 * struct cfg80211_bss - BSS description
 *
 * This structure describes a BSS (which may also be a mesh network)
 * for use in scan results and similar.
 *
Johannes Berg's avatar
Johannes Berg committed
1117
 * @channel: channel this BSS is on
1118 1119 1120 1121 1122
 * @bssid: BSSID of the BSS
 * @tsf: timestamp of last received update
 * @beacon_interval: the beacon interval as from the frame
 * @capability: the capability field in host byte order
 * @information_elements: the information elements (Note that there
1123 1124 1125
 *	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
1126
 * @len_information_elements: total length of the information elements
1127 1128 1129 1130
 * @beacon_ies: the information elements from the last Beacon frame
 * @len_beacon_ies: total length of the beacon_ies
 * @proberesp_ies: the information elements from the last Probe Response frame
 * @len_proberesp_ies: total length of the proberesp_ies
Johannes Berg's avatar
Johannes Berg committed
1131
 * @signal: signal strength value (type depends on the wiphy's signal_type)
1132
 * @free_priv: function pointer to free private data
1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
 */
struct cfg80211_bss {
	struct ieee80211_channel *channel;

	u8 bssid[ETH_ALEN];
	u64 tsf;
	u16 beacon_interval;
	u16 capability;
	u8 *information_elements;
	size_t len_information_elements;
1144 1145 1146 1147
	u8 *beacon_ies;
	size_t len_beacon_ies;
	u8 *proberesp_ies;
	size_t len_proberesp_ies;
1148 1149 1150

	s32 signal;

1151
	void (*free_priv)(struct cfg80211_bss *bss);
1152 1153 1154
	u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
};

1155 1156 1157 1158 1159 1160 1161 1162 1163
/**
 * ieee80211_bss_get_ie - find IE with given ID
 * @bss: the bss to search
 * @ie: the IE ID
 * Returns %NULL if not found.
 */
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);


1164 1165 1166 1167 1168
/**
 * struct cfg80211_auth_request - Authentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * authentication.
Johannes Berg's avatar
Johannes Berg committed
1169 1170
 *
 * @bss: The BSS to authenticate with.
1171 1172 1173
 * @auth_type: Authentication type (algorithm)
 * @ie: Extra IEs to add to Authentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
Johannes Berg's avatar
Johannes Berg committed
1174 1175 1176
 * @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
1177 1178 1179
 * @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
1180 1181
 */
struct cfg80211_auth_request {
Johannes Berg's avatar
Johannes Berg committed
1182
	struct cfg80211_bss *bss;
1183 1184
	const u8 *ie;
	size_t ie_len;
Johannes Berg's avatar
Johannes Berg committed
1185
	enum nl80211_auth_type auth_type;
Johannes Berg's avatar
Johannes Berg committed
1186 1187
	const u8 *key;
	u8 key_len, key_idx;
1188 1189
	const u8 *sae_data;
	size_t sae_data_len;
1190 1191
};

1192 1193 1194 1195 1196 1197 1198 1199 1200
/**
 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
 *
 * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
 */
enum cfg80211_assoc_req_flags {
	ASSOC_REQ_DISABLE_HT		= BIT(0),
};

1201 1202 1203 1204 1205
/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
1206 1207 1208 1209 1210
 * @bss: The BSS to associate with. If the call is successful the driver
 *	is given a reference that it must release, normally via a call to
 *	cfg80211_send_rx_assoc(), or, if association timed out, with a
 *	call to cfg80211_put_bss() (in addition to calling
 *	cfg80211_send_assoc_timeout())
1211 1212
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
1213
 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association
1214
 * @crypto: crypto settings
1215
 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame
1216 1217 1218 1219
 * @flags:  See &enum cfg80211_assoc_req_flags
 * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
 *   will be used in ht_capa.  Un-supported values will be ignored.
 * @ht_capa_mask:  The bits of ht_capa which are to be used.
1220 1221
 */
struct cfg80211_assoc_request {
Johannes Berg's avatar
Johannes Berg committed
1222
	struct cfg80211_bss *bss;
1223
	const u8 *ie, *prev_bssid;
1224
	size_t ie_len;
1225
	struct cfg80211_crypto_settings crypto;
Johannes Berg's avatar
Johannes Berg committed
1226
	bool use_mfp;
Ben Greear's avatar