All new accounts created on Gitlab now require administrator approval. If you invite any collaborators, please let Flux staff know so they can approve the accounts.

cfg80211.h 195 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>
7
 * Copyright 2013-2014 Intel Mobile Communications GmbH
8
 * Copyright 2015	Intel Deutschland GmbH
Johannes Berg's avatar
Johannes Berg committed
9 10 11 12 13
 *
 * 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.
 */
14

Johannes Berg's avatar
Johannes Berg committed
15 16 17
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
18
#include <linux/bug.h>
19 20
#include <linux/netlink.h>
#include <linux/skbuff.h>
21
#include <linux/nl80211.h>
22 23
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
24
#include <linux/net.h>
Johannes Berg's avatar
Johannes Berg committed
25 26
#include <net/regulatory.h>

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 61 62 63
/**
 * 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.
 */

64 65
struct wiphy;

66
/*
Johannes Berg's avatar
Johannes Berg committed
67 68 69
 * wireless hardware capability structures
 */

70
/**
Johannes Berg's avatar
Johannes Berg committed
71 72 73 74 75
 * enum ieee80211_channel_flags - channel flags
 *
 * Channel flags set by the regulatory control code.
 *
 * @IEEE80211_CHAN_DISABLED: This channel is disabled.
76 77
 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes
 * 	sending probe requests or beaconing.
Johannes Berg's avatar
Johannes Berg committed
78
 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
79
 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
Johannes Berg's avatar
Johannes Berg committed
80
 * 	is not permitted.
81
 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
Johannes Berg's avatar
Johannes Berg committed
82
 * 	is not permitted.
83
 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
84 85 86 87 88 89 90 91 92 93
 * @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.
94
 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
95
 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT
96 97 98 99
 * @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.
100
 *
101
 */
Johannes Berg's avatar
Johannes Berg committed
102 103
enum ieee80211_channel_flags {
	IEEE80211_CHAN_DISABLED		= 1<<0,
104 105
	IEEE80211_CHAN_NO_IR		= 1<<1,
	/* hole at 1<<2 */
Johannes Berg's avatar
Johannes Berg committed
106
	IEEE80211_CHAN_RADAR		= 1<<3,
107 108
	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
109
	IEEE80211_CHAN_NO_OFDM		= 1<<6,
110 111
	IEEE80211_CHAN_NO_80MHZ		= 1<<7,
	IEEE80211_CHAN_NO_160MHZ	= 1<<8,
112
	IEEE80211_CHAN_INDOOR_ONLY	= 1<<9,
113
	IEEE80211_CHAN_IR_CONCURRENT	= 1<<10,
114 115
	IEEE80211_CHAN_NO_20MHZ		= 1<<11,
	IEEE80211_CHAN_NO_10MHZ		= 1<<12,
116 117
};

118
#define IEEE80211_CHAN_NO_HT40 \
119
	(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
120

121 122 123
#define IEEE80211_DFS_MIN_CAC_TIME_MS		60000
#define IEEE80211_DFS_MIN_NOP_TIME_MS		(30 * 60 * 1000)

Johannes Berg's avatar
Johannes Berg committed
124 125 126 127 128 129 130 131 132 133 134 135 136 137
/**
 * 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)
138
 * @max_reg_power: maximum regulatory transmission power (in dBm)
Johannes Berg's avatar
Johannes Berg committed
139 140
 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
141
 *	to enable this, this is useful only on 5 GHz band.
Johannes Berg's avatar
Johannes Berg committed
142 143
 * @orig_mag: internal use
 * @orig_mpwr: internal use
144 145 146
 * @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.
147
 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels.
Andy Green's avatar
Andy Green committed
148
 */
Johannes Berg's avatar
Johannes Berg committed
149
struct ieee80211_channel {
150
	enum nl80211_band band;
Johannes Berg's avatar
Johannes Berg committed
151 152 153 154 155
	u16 center_freq;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
156
	int max_reg_power;
Johannes Berg's avatar
Johannes Berg committed
157 158 159
	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
160 161
	enum nl80211_dfs_state dfs_state;
	unsigned long dfs_state_entered;
162
	unsigned int dfs_cac_ms;
Johannes Berg's avatar
Johannes Berg committed
163 164
};

Andy Green's avatar
Andy Green committed
165
/**
Johannes Berg's avatar
Johannes Berg committed
166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
 * 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.
185 186
 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode
Andy Green's avatar
Andy Green committed
187
 */
Johannes Berg's avatar
Johannes Berg committed
188 189 190 191 192 193
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,
194 195
	IEEE80211_RATE_SUPPORTS_5MHZ	= 1<<5,
	IEEE80211_RATE_SUPPORTS_10MHZ	= 1<<6,
Johannes Berg's avatar
Johannes Berg committed
196
};
Andy Green's avatar
Andy Green committed
197

198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230
/**
 * enum ieee80211_bss_type - BSS type filter
 *
 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS
 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS
 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
 */
enum ieee80211_bss_type {
	IEEE80211_BSS_TYPE_ESS,
	IEEE80211_BSS_TYPE_PBSS,
	IEEE80211_BSS_TYPE_IBSS,
	IEEE80211_BSS_TYPE_MBSS,
	IEEE80211_BSS_TYPE_ANY
};

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

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

Johannes Berg's avatar
Johannes Berg committed
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249
/**
 * 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
250

Johannes Berg's avatar
Johannes Berg committed
251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
/**
 * 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
269 270
};

271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286
/**
 * 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
287 288 289 290 291 292 293 294 295 296 297 298 299 300
/**
 * 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
301
 * @ht_cap: HT capabilities in this band
302
 * @vht_cap: VHT capabilities in this band
Johannes Berg's avatar
Johannes Berg committed
303 304 305 306
 */
struct ieee80211_supported_band {
	struct ieee80211_channel *channels;
	struct ieee80211_rate *bitrates;
307
	enum nl80211_band band;
Johannes Berg's avatar
Johannes Berg committed
308 309 310
	int n_channels;
	int n_bitrates;
	struct ieee80211_sta_ht_cap ht_cap;
311
	struct ieee80211_sta_vht_cap vht_cap;
Johannes Berg's avatar
Johannes Berg committed
312
};
Andy Green's avatar
Andy Green committed
313

Johannes Berg's avatar
Johannes Berg committed
314 315 316
/*
 * Wireless hardware/device configuration structures and methods
 */
Andy Green's avatar
Andy Green committed
317

318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
/**
 * 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.
 */

333 334 335
#define VHT_MUMIMO_GROUPS_DATA_LEN (WLAN_MEMBERSHIP_LEN +\
				    WLAN_USER_POSITION_LEN)

Johannes Berg's avatar
Johannes Berg committed
336 337
/**
 * struct vif_params - describes virtual interface parameters
338
 * @use_4addr: use 4-address frames
339 340 341 342 343 344
 * @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.
345 346
 * @vht_mumimo_groups: MU-MIMO groupID. used for monitoring only
 *	 packets belonging to that MU-MIMO groupID.
Johannes Berg's avatar
Johannes Berg committed
347 348
 */
struct vif_params {
349 350 351
	int use_4addr;
	u8 macaddr[ETH_ALEN];
	u8 vht_mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN];
Johannes Berg's avatar
Johannes Berg committed
352
};
Andy Green's avatar
Andy Green committed
353

Johannes Berg's avatar
Johannes Berg committed
354
/**
355 356 357 358 359 360 361 362 363 364
 * 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
365
 * @seq_len: length of @seq.
366 367
 */
struct key_params {
368 369
	const u8 *key;
	const u8 *seq;
370 371 372 373 374
	int key_len;
	int seq_len;
	u32 cipher;
};

375 376 377
/**
 * struct cfg80211_chan_def - channel definition
 * @chan: the (control) channel
378 379 380 381
 * @width: channel width
 * @center_freq1: center frequency of first segment
 * @center_freq2: center frequency of second segment
 *	(only with 80+80 MHz)
382 383 384
 */
struct cfg80211_chan_def {
	struct ieee80211_channel *chan;
385 386 387
	enum nl80211_chan_width width;
	u32 center_freq1;
	u32 center_freq2;
388 389
};

390 391 392 393
/**
 * cfg80211_get_chandef_type - return old channel type from chandef
 * @chandef: the channel definition
 *
394
 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given
395 396
 * chandef, which must have a bandwidth allowing this conversion.
 */
397 398 399
static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
400 401 402 403 404 405 406 407 408 409 410 411 412
	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;
	}
413 414
}

415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431
/**
 * 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
 *
432
 * Return: %true if the channels defined by the channel definitions are
433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
 * 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
 *
450
 * Return: %NULL if the given channel definitions are incompatible,
451 452 453 454 455 456
 * chandef1 or chandef2 otherwise.
 */
const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
			    const struct cfg80211_chan_def *chandef2);

457 458 459
/**
 * cfg80211_chandef_valid - check if a channel definition is valid
 * @chandef: the channel definition to check
460
 * Return: %true if the channel definition is valid. %false otherwise.
461 462 463 464 465 466 467
 */
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
468 469
 * @prohibited_flags: the regulatory channel flags that must not be set
 * Return: %true if secondary channels are usable. %false otherwise.
470 471 472 473 474
 */
bool cfg80211_chandef_usable(struct wiphy *wiphy,
			     const struct cfg80211_chan_def *chandef,
			     u32 prohibited_flags);

475 476 477 478
/**
 * cfg80211_chandef_dfs_required - checks if radar detection is required
 * @wiphy: the wiphy to validate against
 * @chandef: the channel definition to check
479 480 481
 * @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
482 483
 */
int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
484
				  const struct cfg80211_chan_def *chandef,
Luciano Coelho's avatar
Luciano Coelho committed
485
				  enum nl80211_iftype iftype);
486

487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510
/**
 * 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;
}

511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537
/**
 * 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;
}

538 539 540
/**
 * enum survey_info_flags - survey information flags
 *
Johannes Berg's avatar
Johannes Berg committed
541
 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
542
 * @SURVEY_INFO_IN_USE: channel is currently being used
543 544 545 546 547
 * @SURVEY_INFO_TIME: active time (in ms) was filled in
 * @SURVEY_INFO_TIME_BUSY: busy time was filled in
 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in
 * @SURVEY_INFO_TIME_RX: receive time was filled in
 * @SURVEY_INFO_TIME_TX: transmit time was filled in
548
 * @SURVEY_INFO_TIME_SCAN: scan time was filled in
Johannes Berg's avatar
Johannes Berg committed
549
 *
550 551 552 553
 * Used by the driver to indicate which info in &struct survey_info
 * it has filled in during the get_survey().
 */
enum survey_info_flags {
554 555 556 557 558 559 560
	SURVEY_INFO_NOISE_DBM		= BIT(0),
	SURVEY_INFO_IN_USE		= BIT(1),
	SURVEY_INFO_TIME		= BIT(2),
	SURVEY_INFO_TIME_BUSY		= BIT(3),
	SURVEY_INFO_TIME_EXT_BUSY	= BIT(4),
	SURVEY_INFO_TIME_RX		= BIT(5),
	SURVEY_INFO_TIME_TX		= BIT(6),
561
	SURVEY_INFO_TIME_SCAN		= BIT(7),
562 563 564 565 566
};

/**
 * struct survey_info - channel survey response
 *
567 568
 * @channel: the channel this survey record reports, may be %NULL for a single
 *	record to report global statistics
569 570
 * @filled: bitflag of flags from &enum survey_info_flags
 * @noise: channel noise in dBm. This and all following fields are
571
 *	optional
572 573 574 575 576
 * @time: amount of time in ms the radio was turn on (on the channel)
 * @time_busy: amount of time the primary channel was sensed busy
 * @time_ext_busy: amount of time the extension channel was sensed busy
 * @time_rx: amount of time the radio spent receiving data
 * @time_tx: amount of time the radio spent transmitting data
577
 * @time_scan: amount of time the radio spent for scanning
578
 *
Johannes Berg's avatar
Johannes Berg committed
579 580
 * Used by dump_survey() to report back per-channel survey information.
 *
581 582 583 584 585
 * This structure can later be expanded with things like
 * channel duty cycle etc.
 */
struct survey_info {
	struct ieee80211_channel *channel;
586 587 588 589 590
	u64 time;
	u64 time_busy;
	u64 time_ext_busy;
	u64 time_rx;
	u64 time_tx;
591
	u64 time_scan;
592 593 594 595
	u32 filled;
	s8 noise;
};

596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625
/**
 * 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;
};

626
/**
627
 * struct cfg80211_beacon_data - beacon data
628
 * @head: head portion of beacon (before TIM IE)
629
 *	or %NULL if not changed
630
 * @tail: tail portion of beacon (after TIM IE)
631
 *	or %NULL if not changed
632 633
 * @head_len: length of @head
 * @tail_len: length of @tail
634 635 636 637 638 639 640 641
 * @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
642 643
 * @probe_resp_len: length of probe response template (@probe_resp)
 * @probe_resp: probe response template (AP mode only)
644
 */
645 646 647 648 649 650 651 652 653 654 655 656 657 658
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;
};

659 660 661 662
struct mac_address {
	u8 addr[ETH_ALEN];
};

663 664 665 666
/**
 * struct cfg80211_acl_data - Access control list data
 *
 * @acl_policy: ACL policy to be applied on the station's
Johannes Berg's avatar
Johannes Berg committed
667
 *	entry specified by mac_addr
668 669 670 671 672 673 674 675 676 677 678
 * @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[];
};

679 680 681 682 683
/**
 * struct cfg80211_ap_settings - AP configuration
 *
 * Used to configure an AP interface.
 *
684
 * @chandef: defines the channel to use
685 686 687 688 689 690 691 692 693 694
 * @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)
695
 * @smps_mode: SMPS mode
696
 * @inactivity_timeout: time in seconds to determine station's inactivity.
697 698
 * @p2p_ctwindow: P2P CT Window
 * @p2p_opp_ps: P2P opportunistic PS
699 700
 * @acl: ACL configuration used by the drivers which has support for
 *	MAC address based access control
701 702
 * @pbss: If set, start as a PCP instead of AP. Relevant for DMG
 *	networks.
703 704
 */
struct cfg80211_ap_settings {
705
	struct cfg80211_chan_def chandef;
706

707 708 709
	struct cfg80211_beacon_data beacon;

	int beacon_interval, dtim_period;
710 711 712
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_hidden_ssid hidden_ssid;
713 714 715
	struct cfg80211_crypto_settings crypto;
	bool privacy;
	enum nl80211_auth_type auth_type;
716
	enum nl80211_smps_mode smps_mode;
717
	int inactivity_timeout;
718 719
	u8 p2p_ctwindow;
	bool p2p_opp_ps;
720
	const struct cfg80211_acl_data *acl;
721
	bool pbss;
722 723
};

724 725 726 727 728 729 730
/**
 * 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
731 732 733 734
 * @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
735 736 737 738 739 740 741 742
 * @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;
743 744 745 746
	const u16 *counter_offsets_beacon;
	const u16 *counter_offsets_presp;
	unsigned int n_counter_offsets_beacon;
	unsigned int n_counter_offsets_presp;
747 748 749 750 751 752
	struct cfg80211_beacon_data beacon_after;
	bool radar_required;
	bool block_tx;
	u8 count;
};

753 754 755
/**
 * enum station_parameters_apply_mask - station parameter values to apply
 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
756
 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
757
 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
758 759 760 761 762 763
 *
 * 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),
764
	STATION_PARAM_APPLY_CAPABILITY = BIT(1),
765
	STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
766 767
};

768 769 770 771 772 773 774 775 776
/**
 * 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
777 778 779 780
 * @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_...))
781 782
 * @listen_interval: listen interval or -1 for no change
 * @aid: AID or zero for no change
783
 * @peer_aid: mesh peer AID or zero for no change
Johannes Berg's avatar
Johannes Berg committed
784
 * @plink_action: plink action to take
785
 * @plink_state: set the peer link state for a station
Johannes Berg's avatar
Johannes Berg committed
786
 * @ht_capa: HT capabilities of station
787
 * @vht_capa: VHT capabilities of station
788 789 790 791
 * @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)
792 793 794
 * @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
795 796
 * @local_pm: local link-specific mesh power save mode (no change when set
 *	to unknown)
797 798 799
 * @capability: station capability
 * @ext_capab: extended capabilities of the station
 * @ext_capab_len: number of extended capabilities
800 801 802 803
 * @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
804 805
 * @opmode_notif: operating mode field from Operating Mode Notification
 * @opmode_notif_used: information if operating mode field is used
806
 * @support_p2p_ps: information if station supports P2P PS mechanism
807 808
 */
struct station_parameters {
809
	const u8 *supported_rates;
810
	struct net_device *vlan;
811
	u32 sta_flags_mask, sta_flags_set;
812
	u32 sta_modify_mask;
813 814
	int listen_interval;
	u16 aid;
815
	u16 peer_aid;
816
	u8 supported_rates_len;
817
	u8 plink_action;
818
	u8 plink_state;
819 820
	const struct ieee80211_ht_cap *ht_capa;
	const struct ieee80211_vht_cap *vht_capa;
821 822
	u8 uapsd_queues;
	u8 max_sp;
823
	enum nl80211_mesh_power_mode local_pm;
824
	u16 capability;
825
	const u8 *ext_capab;
826
	u8 ext_capab_len;
827 828 829 830
	const u8 *supported_channels;
	u8 supported_channels_len;
	const u8 *supported_oper_classes;
	u8 supported_oper_classes_len;
831 832
	u8 opmode_notif;
	bool opmode_notif_used;
833
	int support_p2p_ps;
834 835
};

836 837 838 839 840 841
/**
 * 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
842 843 844
 * @subtype: Management frame subtype to use for indicating removal
 *	(10 = Disassociation, 12 = Deauthentication)
 * @reason_code: Reason code for the Disassociation/Deauthentication frame
845 846 847
 */
struct station_del_parameters {
	const u8 *mac;
848 849
	u8 subtype;
	u16 reason_code;
850 851
};

852 853 854
/**
 * enum cfg80211_station_type - the type of station being modified
 * @CFG80211_STA_AP_CLIENT: client of an AP interface
855 856
 * @CFG80211_STA_AP_CLIENT_UNASSOC: client of an AP interface that is still
 *	unassociated (update properties for this type of client is permitted)
857 858 859 860 861 862 863 864 865 866
 * @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)
867 868
 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
869 870 871
 */
enum cfg80211_station_type {
	CFG80211_STA_AP_CLIENT,
872
	CFG80211_STA_AP_CLIENT_UNASSOC,
873 874 875 876 877
	CFG80211_STA_AP_MLME_CLIENT,
	CFG80211_STA_AP_STA,
	CFG80211_STA_IBSS,
	CFG80211_STA_TDLS_PEER_SETUP,
	CFG80211_STA_TDLS_PEER_ACTIVE,
878 879
	CFG80211_STA_MESH_PEER_KERNEL,
	CFG80211_STA_MESH_PEER_USER,
880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897
};

/**
 * 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);

898 899 900 901 902 903
/**
 * enum station_info_rate_flags - bitrate info flags
 *
 * Used by the driver to indicate the specific rate transmission
 * type for 802.11n transmissions.
 *
904 905
 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
906
 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
907
 * @RATE_INFO_FLAGS_60G: 60GHz MCS
908 909
 */
enum rate_info_flags {
910 911
	RATE_INFO_FLAGS_MCS			= BIT(0),
	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934
	RATE_INFO_FLAGS_SHORT_GI		= BIT(2),
	RATE_INFO_FLAGS_60G			= BIT(3),
};

/**
 * enum rate_info_bw - rate bandwidth information
 *
 * Used by the driver to indicate the rate bandwidth.
 *
 * @RATE_INFO_BW_5: 5 MHz bandwidth
 * @RATE_INFO_BW_10: 10 MHz bandwidth
 * @RATE_INFO_BW_20: 20 MHz bandwidth
 * @RATE_INFO_BW_40: 40 MHz bandwidth
 * @RATE_INFO_BW_80: 80 MHz bandwidth
 * @RATE_INFO_BW_160: 160 MHz bandwidth
 */
enum rate_info_bw {
	RATE_INFO_BW_5,
	RATE_INFO_BW_10,
	RATE_INFO_BW_20,
	RATE_INFO_BW_40,
	RATE_INFO_BW_80,
	RATE_INFO_BW_160,
935 936 937 938 939 940 941 942 943 944
};

/**
 * 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
945
 * @nss: number of streams (VHT only)
946
 * @bw: bandwidth (from &enum rate_info_bw)
947 948 949 950 951
 */
struct rate_info {
	u8 flags;
	u8 mcs;
	u16 legacy;
952
	u8 nss;
953
	u8 bw;
954 955
};

956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986
/**
 * 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;
};

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
/**
 * struct cfg80211_tid_stats - per-TID statistics
 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to
 *	indicate the relevant values in this struct are filled
 * @rx_msdu: number of received MSDUs
 * @tx_msdu: number of (attempted) transmitted MSDUs
 * @tx_msdu_retries: number of retries (not counting the first) for
 *	transmitted MSDUs
 * @tx_msdu_failed: number of failed transmitted MSDUs
 */
struct cfg80211_tid_stats {
	u32 filled;
	u64 rx_msdu;
	u64 tx_msdu;
	u64 tx_msdu_retries;
	u64 tx_msdu_failed;
};

1005 1006
#define IEEE80211_MAX_CHAINS	4

1007
/**
1008
 * struct station_info - station information
1009
 *
1010
 * Station information filled by driver for get_station() and dump_station.
1011
 *
1012 1013
 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to
 *	indicate the relevant values in this struct for them
1014
 * @connected_time: time(in secs) since a station is last connected
1015
 * @inactive_time: time since last station activity (tx/rx) in milliseconds
1016 1017
 * @rx_bytes: bytes (size of MPDUs) received from this station
 * @tx_bytes: bytes (size of MPDUs) transmitted to this station
1018 1019 1020
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
1021 1022 1023 1024
 * @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 1032 1033
 * @rx_packets: packets (MSDUs & MMPDUs) received from this station
 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station
 * @tx_retries: cumulative retry counts (MPDUs)
 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK)
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.
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 1055
 * @rx_beacon: number of beacons received from this peer
 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received
 *	from this peer
1056
 * @rx_duration: aggregate PPDU duration(usecs) for all the frames from a peer
1057 1058
 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last
 *	(IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs.
1059
 */
1060
struct station_info {
1061
	u64 filled;
1062
	u32 connected_time;
1063
	u32 inactive_time;
1064 1065
	u64 rx_bytes;
	u64 tx_bytes;
1066 1067 1068
	u16 llid;
	u16 plid;
	u8 plink_state;
1069
	s8 signal;
1070
	s8 signal_avg;
1071 1072 1073 1074 1075

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

1076
	struct rate_info txrate;
1077
	struct rate_info rxrate;
1078 1079
	u32 rx_packets;
	u32 tx_packets;
1080 1081
	u32 tx_retries;
	u32 tx_failed;
1082
	u32 rx_dropped_misc;
1083
	struct sta_bss_parameters bss_param;
1084
	struct nl80211_sta_flag_update sta_flags;
1085 1086

	int generation;
1087 1088 1089

	const u8 *assoc_req_ies;
	size_t assoc_req_ies_len;
1090

1091
	u32 beacon_loss_count;
1092
	s64 t_offset;
1093 1094 1095
	enum nl80211_mesh_power_mode local_pm;
	enum nl80211_mesh_power_mode peer_pm;
	enum nl80211_mesh_power_mode nonpeer_pm;
1096

1097
	u32 expected_throughput;
1098 1099

	u64 rx_beacon;
1100
	u64 rx_duration;
1101
	u8 rx_beacon_signal_avg;
1102
	struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1];
1103 1104
};

1105
#if IS_ENABLED(CONFIG_CFG80211)
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117
/**
 * 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);
1118 1119 1120 1121 1122 1123 1124 1125
#else
static inline int cfg80211_get_station(struct net_device *dev,
				       const u8 *mac_addr,
				       struct station_info *sinfo)
{
	return -ENOENT;
}
#endif
1126

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
/**
 * 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
1138
 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
1139 1140 1141 1142 1143 1144 1145
 */
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,
1146
	MONITOR_FLAG_ACTIVE		= 1<<NL80211_MNTR_FLAG_ACTIVE,
1147 1148
};

1149 1150 1151 1152 1153 1154
/**
 * 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
1155 1156 1157 1158 1159 1160 1161
 * @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
1162 1163 1164
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
1165
	MPATH_INFO_SN			= BIT(1),
1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
	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
1180
 * @sn: target sequence number
1181 1182 1183 1184 1185
 * @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
1186 1187 1188 1189
 * @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.
1190 1191 1192 1193
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
1194
	u32 sn;
1195 1196 1197 1198 1199
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
1200 1201

	int generation;
1202 1203
};

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214
/**
 * 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)
1215 1216 1217
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
1218
 * @ap_isolate: do not forward packets between connected stations
1219 1220
 * @ht_opmode: HT Operation mode
 * 	(u16 = opmode, -1 = do not change)
1221 1222
 * @p2p_ctwindow: P2P CT Window (-1 = no change)
 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
1223 1224 1225 1226 1227
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
1228
	const u8 *basic_rates;
1229
	u8 basic_rates_len;
1230
	int ap_isolate;
1231
	int ht_opmode;
1232
	s8 p2p_ctwindow, p2p_opp_ps;
1233
};
1234

1235
/**
1236 1237 1238
 * struct mesh_config - 802.11s mesh configuration
 *
 * These parameters can be changed while the mesh is active.
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