cfg80211.h 50.6 KB
Newer Older
1
2
#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
Johannes Berg's avatar
Johannes Berg committed
3
4
5
6
7
8
9
10
11
/*
 * 802.11 device and configuration interface
 *
 * Copyright 2006-2009	Johannes Berg <johannes@sipsolutions.net>
 *
 * 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
17
#include <linux/netlink.h>
#include <linux/skbuff.h>
18
#include <linux/nl80211.h>
19
20
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
Johannes Berg's avatar
Johannes Berg committed
21
22
#include <net/regulatory.h>

Johannes Berg's avatar
Johannes Berg committed
23
/* remove once we remove the wext stuff */
Johannes Berg's avatar
Johannes Berg committed
24
25
26
#include <net/iw_handler.h>
#include <linux/wireless.h>

27
28

/*
Johannes Berg's avatar
Johannes Berg committed
29
30
31
32
33
34
35
36
 * wireless hardware capability structures
 */

/**
 * enum ieee80211_band - supported frequency bands
 *
 * The bands are assigned this way because the supported
 * bitrates differ in these bands.
37
 *
Johannes Berg's avatar
Johannes Berg committed
38
39
 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
40
 */
Johannes Berg's avatar
Johannes Berg committed
41
42
43
44
45
46
47
enum ieee80211_band {
	IEEE80211_BAND_2GHZ,
	IEEE80211_BAND_5GHZ,

	/* keep last */
	IEEE80211_NUM_BANDS
};
48

49
/**
Johannes Berg's avatar
Johannes Berg committed
50
51
52
53
54
55
56
57
58
59
60
61
62
 * 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.
 * @IEEE80211_CHAN_NO_FAT_ABOVE: extension channel above this channel
 * 	is not permitted.
 * @IEEE80211_CHAN_NO_FAT_BELOW: extension channel below this channel
 * 	is not permitted.
63
 */
Johannes Berg's avatar
Johannes Berg committed
64
65
66
67
68
69
70
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,
	IEEE80211_CHAN_NO_FAT_ABOVE	= 1<<4,
	IEEE80211_CHAN_NO_FAT_BELOW	= 1<<5,
71
72
};

Johannes Berg's avatar
Johannes Berg committed
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/**
 * struct ieee80211_channel - channel definition
 *
 * This structure describes a single channel for use
 * with cfg80211.
 *
 * @center_freq: center frequency in MHz
 * @max_bandwidth: maximum allowed bandwidth for this channel, 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)
 * @beacon_found: helper to regulatory code to indicate when a beacon
 *	has been found on this channel. Use regulatory_hint_found_beacon()
 *	to enable this, this is is useful only on 5 GHz band.
 * @orig_mag: internal use
 * @orig_mpwr: internal use
Andy Green's avatar
Andy Green committed
93
 */
Johannes Berg's avatar
Johannes Berg committed
94
95
96
97
98
99
100
101
102
103
104
105
106
struct ieee80211_channel {
	enum ieee80211_band band;
	u16 center_freq;
	u8 max_bandwidth;
	u16 hw_value;
	u32 flags;
	int max_antenna_gain;
	int max_power;
	bool beacon_found;
	u32 orig_flags;
	int orig_mag, orig_mpwr;
};

Andy Green's avatar
Andy Green committed
107
/**
Johannes Berg's avatar
Johannes Berg committed
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
 * 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
127
 */
Johannes Berg's avatar
Johannes Berg committed
128
129
130
131
132
133
134
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
135

Johannes Berg's avatar
Johannes Berg committed
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/**
 * 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
155

Johannes Berg's avatar
Johannes Berg committed
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/**
 * 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
174
175
};

Johannes Berg's avatar
Johannes Berg committed
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/**
 * 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
 */
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;
};
Andy Green's avatar
Andy Green committed
199

Johannes Berg's avatar
Johannes Berg committed
200
201
202
/*
 * Wireless hardware/device configuration structures and methods
 */
Andy Green's avatar
Andy Green committed
203

Johannes Berg's avatar
Johannes Berg committed
204
205
206
207
208
209
210
211
212
/**
 * struct vif_params - describes virtual interface parameters
 * @mesh_id: mesh ID to use
 * @mesh_id_len: length of the mesh ID
 */
struct vif_params {
       u8 *mesh_id;
       int mesh_id_len;
};
Andy Green's avatar
Andy Green committed
213

Johannes Berg's avatar
Johannes Berg committed
214
/**
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
 * 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.
 */
struct key_params {
	u8 *key;
	u8 *seq;
	int key_len;
	int seq_len;
	u32 cipher;
};

234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
/**
 * struct beacon_parameters - beacon parameters
 *
 * Used to configure the beacon for an interface.
 *
 * @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
 * @interval: beacon interval or zero if not changed
 * @dtim_period: DTIM period or zero if not changed
 * @head_len: length of @head
 * @tail_len: length of @tail
 */
struct beacon_parameters {
	u8 *head, *tail;
	int interval, dtim_period;
	int head_len, tail_len;
};

254
255
256
257
258
259
260
261
262
263
264
/**
 * enum station_flags - station flags
 *
 * Station capability flags. Note that these must be the bits
 * according to the nl80211 flags.
 *
 * @STATION_FLAG_CHANGED: station flags were changed
 * @STATION_FLAG_AUTHORIZED: station is authorized to send frames (802.1X)
 * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
 *	with short preambles
 * @STATION_FLAG_WME: station is WME/QoS capable
265
 * @STATION_FLAG_MFP: station uses management frame protection
266
267
268
269
270
271
 */
enum station_flags {
	STATION_FLAG_CHANGED		= 1<<0,
	STATION_FLAG_AUTHORIZED		= 1<<NL80211_STA_FLAG_AUTHORIZED,
	STATION_FLAG_SHORT_PREAMBLE	= 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
	STATION_FLAG_WME		= 1<<NL80211_STA_FLAG_WME,
272
	STATION_FLAG_MFP		= 1<<NL80211_STA_FLAG_MFP,
273
274
};

275
276
277
278
279
280
281
282
283
284
285
286
287
/**
 * enum plink_action - actions to perform in mesh peers
 *
 * @PLINK_ACTION_INVALID: action 0 is reserved
 * @PLINK_ACTION_OPEN: start mesh peer link establishment
 * @PLINK_ACTION_BLOCL: block traffic from this mesh peer
 */
enum plink_actions {
	PLINK_ACTION_INVALID,
	PLINK_ACTION_OPEN,
	PLINK_ACTION_BLOCK,
};

288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
/**
 * 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
 * @station_flags: station flags (see &enum station_flags)
 * @listen_interval: listen interval or -1 for no change
 * @aid: AID or zero for no change
 */
struct station_parameters {
	u8 *supported_rates;
	struct net_device *vlan;
	u32 station_flags;
	int listen_interval;
	u16 aid;
	u8 supported_rates_len;
308
	u8 plink_action;
309
	struct ieee80211_ht_cap *ht_capa;
310
311
};

312
/**
313
 * enum station_info_flags - station information flags
314
 *
315
316
 * Used by the driver to indicate which info in &struct station_info
 * it has filled in during get_station() or dump_station().
317
 *
318
319
320
321
322
323
 * @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
324
325
326
 * @STATION_INFO_SIGNAL: @signal filled
 * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled
 *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
327
328
 * @STATION_INFO_RX_PACKETS: @rx_packets filled
 * @STATION_INFO_TX_PACKETS: @tx_packets filled
329
 */
330
331
332
333
334
335
336
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,
337
338
	STATION_INFO_SIGNAL		= 1<<6,
	STATION_INFO_TX_BITRATE		= 1<<7,
339
340
	STATION_INFO_RX_PACKETS		= 1<<8,
	STATION_INFO_TX_PACKETS		= 1<<9,
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
};

/**
 * 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
 */
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,
};

/**
 * 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;
372
373
374
};

/**
375
 * struct station_info - station information
376
 *
377
 * Station information filled by driver for get_station() and dump_station.
378
 *
379
 * @filled: bitflag of flags from &enum station_info_flags
380
381
382
 * @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
383
384
385
 * @llid: mesh local link id
 * @plid: mesh peer link id
 * @plink_state: mesh peer link state
386
387
 * @signal: signal strength of last received packet in dBm
 * @txrate: current unicast bitrate to this station
388
389
 * @rx_packets: packets received from this station
 * @tx_packets: packets transmitted to this station
390
 */
391
struct station_info {
392
393
394
395
	u32 filled;
	u32 inactive_time;
	u32 rx_bytes;
	u32 tx_bytes;
396
397
398
	u16 llid;
	u16 plid;
	u8 plink_state;
399
400
	s8 signal;
	struct rate_info txrate;
401
402
	u32 rx_packets;
	u32 tx_packets;
403
404
};

405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
/**
 * 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,
};

425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
/**
 * 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().
 *
 * MPATH_INFO_FRAME_QLEN: @frame_qlen filled
 * MPATH_INFO_DSN: @dsn 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
 */
enum mpath_info_flags {
	MPATH_INFO_FRAME_QLEN		= BIT(0),
	MPATH_INFO_DSN			= BIT(1),
	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
 * @dsn: destination sequence number
 * @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
 */
struct mpath_info {
	u32 filled;
	u32 frame_qlen;
	u32 dsn;
	u32 metric;
	u32 exptime;
	u32 discovery_timeout;
	u8 discovery_retries;
	u8 flags;
};

474
475
476
477
478
479
480
481
482
483
484
/**
 * 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)
485
486
487
 * @basic_rates: basic rates in IEEE 802.11 format
 *	(or NULL for no change)
 * @basic_rates_len: number of basic rates
488
489
490
491
492
 */
struct bss_parameters {
	int use_cts_prot;
	int use_short_preamble;
	int use_short_slot_time;
493
494
	u8 *basic_rates;
	u8 basic_rates_len;
495
};
496

497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
struct mesh_config {
	/* Timeouts in ms */
	/* Mesh plink management parameters */
	u16 dot11MeshRetryTimeout;
	u16 dot11MeshConfirmTimeout;
	u16 dot11MeshHoldingTimeout;
	u16 dot11MeshMaxPeerLinks;
	u8  dot11MeshMaxRetries;
	u8  dot11MeshTTL;
	bool auto_open_plinks;
	/* HWMP parameters */
	u8  dot11MeshHWMPmaxPREQretries;
	u32 path_refresh_time;
	u16 min_discovery_timeout;
	u32 dot11MeshHWMPactivePathTimeout;
	u16 dot11MeshHWMPpreqMinInterval;
	u16 dot11MeshHWMPnetDiameterTraversalTime;
};

516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
/**
 * struct ieee80211_txq_params - TX queue parameters
 * @queue: TX queue identifier (NL80211_TXQ_Q_*)
 * @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 {
	enum nl80211_txq_q queue;
	u16 txop;
	u16 cwmin;
	u16 cwmax;
	u8 aifs;
};

534
535
536
/* from net/wireless.h */
struct wiphy;

537
538
539
/* from net/ieee80211.h */
struct ieee80211_channel;

540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
/**
 * 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.
 * @n_channels: number of channels for each band
557
558
 * @ie: optional information element(s) to add into Probe Request or %NULL
 * @ie_len: length of ie in octets
559
560
561
562
563
564
565
566
 * @wiphy: the wiphy this was for
 * @ifidx: the interface index
 */
struct cfg80211_scan_request {
	struct cfg80211_ssid *ssids;
	int n_ssids;
	struct ieee80211_channel **channels;
	u32 n_channels;
567
	const u8 *ie;
568
	size_t ie_len;
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600

	/* internal */
	struct wiphy *wiphy;
	int ifidx;
};

/**
 * 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.
 *
 * @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
 *	is no guarantee that these are well-formed!)
 * @len_information_elements: total length of the information elements
Johannes Berg's avatar
Johannes Berg committed
601
 * @signal: signal strength value (type depends on the wiphy's signal_type)
Kalle Valo's avatar
Kalle Valo committed
602
 * @hold: BSS should not expire
603
 * @free_priv: function pointer to free private data
604
605
606
607
608
609
610
611
612
613
614
615
616
617
 * @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;

	s32 signal;

618
	void (*free_priv)(struct cfg80211_bss *bss);
619
620
621
	u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
};

622
623
624
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
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
/**
 * struct cfg80211_auth_request - Authentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * authentication.
 * NOTE: This structure will likely change when more code from mac80211 is
 * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too.
 * Before using this in a driver that does not use mac80211, it would be better
 * to check the status of that work and better yet, volunteer to work on it.
 *
 * @chan: The channel to use or %NULL if not specified (auto-select based on
 *	scan results)
 * @peer_addr: The address of the peer STA (AP BSSID in infrastructure case);
 *	this field is required to be present; if the driver wants to help with
 *	BSS selection, it should use (yet to be added) MLME event to allow user
 *	space SME to be notified of roaming candidate, so that the SME can then
 *	use the authentication request with the recommended BSSID and whatever
 *	other data may be needed for authentication/association
 * @ssid: SSID or %NULL if not yet available
 * @ssid_len: Length of ssid in octets
 * @auth_type: Authentication type (algorithm)
 * @ie: Extra IEs to add to Authentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
 */
struct cfg80211_auth_request {
	struct ieee80211_channel *chan;
	u8 *peer_addr;
	const u8 *ssid;
	size_t ssid_len;
	enum nl80211_auth_type auth_type;
	const u8 *ie;
	size_t ie_len;
};

/**
 * struct cfg80211_assoc_request - (Re)Association request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * (re)association.
 * NOTE: This structure will likely change when more code from mac80211 is
 * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too.
 * Before using this in a driver that does not use mac80211, it would be better
 * to check the status of that work and better yet, volunteer to work on it.
 *
 * @chan: The channel to use or %NULL if not specified (auto-select based on
 *	scan results)
 * @peer_addr: The address of the peer STA (AP BSSID); this field is required
 *	to be present and the STA must be in State 2 (authenticated) with the
 *	peer STA
 * @ssid: SSID
 * @ssid_len: Length of ssid in octets
 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL
 * @ie_len: Length of ie buffer in octets
 */
struct cfg80211_assoc_request {
	struct ieee80211_channel *chan;
	u8 *peer_addr;
	const u8 *ssid;
	size_t ssid_len;
	const u8 *ie;
	size_t ie_len;
};

/**
 * struct cfg80211_deauth_request - Deauthentication request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * deauthentication.
 *
 * @peer_addr: The address of the peer STA (AP BSSID); this field is required
 *	to be present and the STA must be authenticated with the peer STA
 * @ie: Extra IEs to add to Deauthentication frame or %NULL
 * @ie_len: Length of ie buffer in octets
 */
struct cfg80211_deauth_request {
	u8 *peer_addr;
	u16 reason_code;
	const u8 *ie;
	size_t ie_len;
};

/**
 * struct cfg80211_disassoc_request - Disassociation request data
 *
 * This structure provides information needed to complete IEEE 802.11
 * disassocation.
 *
 * @peer_addr: The address of the peer STA (AP BSSID); this field is required
 *	to be present and the STA must be associated with the peer STA
 * @ie: Extra IEs to add to Disassociation frame or %NULL
 * @ie_len: Length of ie buffer in octets
 */
struct cfg80211_disassoc_request {
	u8 *peer_addr;
	u16 reason_code;
	const u8 *ie;
	size_t ie_len;
};

Johannes Berg's avatar
Johannes Berg committed
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
/**
 * struct cfg80211_ibss_params - IBSS parameters
 *
 * This structure defines the IBSS parameters for the join_ibss()
 * method.
 *
 * @ssid: The SSID, will always be non-null.
 * @ssid_len: The length of the SSID, will always be non-zero.
 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not
 *	search for IBSSs with a different BSSID.
 * @channel: The channel to use if no IBSS can be found to join.
 * @channel_fixed: The channel should be fixed -- do not search for
 *	IBSSs to join on other channels.
 * @ie: information element(s) to include in the beacon
 * @ie_len: length of that
 */
struct cfg80211_ibss_params {
	u8 *ssid;
	u8 *bssid;
	struct ieee80211_channel *channel;
	u8 *ie;
	u8 ssid_len, ie_len;
	bool channel_fixed;
};

746
747
748
749
750
751
752
753
754
755
756
757
758
759
/**
 * enum wiphy_params_flags - set_wiphy_params bitfield values
 * WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed
 * WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed
 * WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed
 * WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed
 */
enum wiphy_params_flags {
	WIPHY_PARAM_RETRY_SHORT		= 1 << 0,
	WIPHY_PARAM_RETRY_LONG		= 1 << 1,
	WIPHY_PARAM_FRAG_THRESHOLD	= 1 << 2,
	WIPHY_PARAM_RTS_THRESHOLD	= 1 << 3,
};

760
761
762
763
764
765
766
767
768
/**
 * struct cfg80211_ops - backend description for wireless configuration
 *
 * This struct is registered by fullmac card drivers and/or wireless stacks
 * in order to handle configuration requests on their interfaces.
 *
 * All callbacks except where otherwise noted should return 0
 * on success or a negative error code.
 *
769
770
771
772
 * All operations are currently invoked under rtnl for consistency with the
 * wireless extensions but this is subject to reevaluation as soon as this
 * code is used more widely and we have a first user without wext.
 *
Johannes Berg's avatar
Johannes Berg committed
773
774
775
 * @suspend: wiphy device needs to be suspended
 * @resume: wiphy device needs to be resumed
 *
Johannes Berg's avatar
Johannes Berg committed
776
777
 * @add_virtual_intf: create a new virtual interface with the given name,
 *	must set the struct wireless_dev's iftype.
778
779
 *
 * @del_virtual_intf: remove the virtual interface determined by ifindex.
780
 *
Johannes Berg's avatar
Johannes Berg committed
781
782
 * @change_virtual_intf: change type/configuration of virtual interface,
 *	keep the struct wireless_dev's iftype updated.
783
 *
784
785
786
787
788
789
790
791
792
793
794
795
 * @add_key: add a key with the given parameters. @mac_addr will be %NULL
 *	when adding a group key.
 *
 * @get_key: get information about the key with the given parameters.
 *	@mac_addr will be %NULL when requesting information for a group
 *	key. All pointers given to the @callback function need not be valid
 *	after it returns.
 *
 * @del_key: remove a key given the @mac_addr (%NULL for a group key)
 *	and @key_index
 *
 * @set_default_key: set the default key on an interface
796
 *
797
798
 * @set_default_mgmt_key: set the default management frame key on an interface
 *
799
800
801
802
803
804
 * @add_beacon: Add a beacon with given parameters, @head, @interval
 *	and @dtim_period will be valid, @tail is optional.
 * @set_beacon: Change the beacon parameters for an access point mode
 *	interface. This should reject the call when no beacon has been
 *	configured.
 * @del_beacon: Remove beacon configuration and stop sending the beacon.
805
806
807
808
809
810
 *
 * @add_station: Add a new station.
 *
 * @del_station: Remove a station; @mac may be NULL to remove all stations.
 *
 * @change_station: Modify a given station.
811
 *
812
813
814
815
816
817
 * @get_mesh_params: Put the current mesh parameters into *params
 *
 * @set_mesh_params: Set mesh parameters.
 *	The mask is a bitfield which tells us which parameters to
 *	set, and which to leave alone.
 *
818
 * @set_mesh_cfg: set mesh parameters (by now, just mesh id)
819
820
 *
 * @change_bss: Modify parameters for a given BSS.
821
822
 *
 * @set_txq_params: Set TX queue parameters
823
824
 *
 * @set_channel: Set channel
825
 *
826
827
828
829
 * @scan: Request to do a scan. If returning zero, the scan request is given
 *	the driver, and will be valid until passed to cfg80211_scan_done().
 *	For scan results, call cfg80211_inform_bss(); you can call this outside
 *	the scan/scan_done bracket too.
830
831
832
833
834
 *
 * @auth: Request to authenticate with the specified peer
 * @assoc: Request to (re)associate with the specified peer
 * @deauth: Request to deauthenticate from the specified peer
 * @disassoc: Request to disassociate from the specified peer
Johannes Berg's avatar
Johannes Berg committed
835
836
837
838
839
 *
 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
 *	cfg80211_ibss_joined(), also call that function when changing BSSID due
 *	to a merge.
 * @leave_ibss: Leave the IBSS.
840
841
842
843
844
 *
 * @set_wiphy_params: Notify that wiphy parameters have changed;
 *	@changed bitfield (see &enum wiphy_params_flags) describes which values
 *	have changed. The actual parameter values are available in
 *	struct wiphy. If returning an error, no value should be changed.
845
846
 */
struct cfg80211_ops {
Johannes Berg's avatar
Johannes Berg committed
847
848
849
	int	(*suspend)(struct wiphy *wiphy);
	int	(*resume)(struct wiphy *wiphy);

850
	int	(*add_virtual_intf)(struct wiphy *wiphy, char *name,
851
852
				    enum nl80211_iftype type, u32 *flags,
				    struct vif_params *params);
853
	int	(*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
854
	int	(*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
855
856
				       enum nl80211_iftype type, u32 *flags,
				       struct vif_params *params);
857
858
859
860
861
862
863
864
865
866
867
868

	int	(*add_key)(struct wiphy *wiphy, struct net_device *netdev,
			   u8 key_index, u8 *mac_addr,
			   struct key_params *params);
	int	(*get_key)(struct wiphy *wiphy, struct net_device *netdev,
			   u8 key_index, u8 *mac_addr, void *cookie,
			   void (*callback)(void *cookie, struct key_params*));
	int	(*del_key)(struct wiphy *wiphy, struct net_device *netdev,
			   u8 key_index, u8 *mac_addr);
	int	(*set_default_key)(struct wiphy *wiphy,
				   struct net_device *netdev,
				   u8 key_index);
869
870
871
	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
					struct net_device *netdev,
					u8 key_index);
872
873
874
875
876
877

	int	(*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
			      struct beacon_parameters *info);
	int	(*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
			      struct beacon_parameters *info);
	int	(*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
878
879
880
881
882
883
884
885


	int	(*add_station)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *mac, struct station_parameters *params);
	int	(*del_station)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *mac);
	int	(*change_station)(struct wiphy *wiphy, struct net_device *dev,
				  u8 *mac, struct station_parameters *params);
886
	int	(*get_station)(struct wiphy *wiphy, struct net_device *dev,
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
			       u8 *mac, struct station_info *sinfo);
	int	(*dump_station)(struct wiphy *wiphy, struct net_device *dev,
			       int idx, u8 *mac, struct station_info *sinfo);

	int	(*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop);
	int	(*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst);
	int	(*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
				  u8 *dst, u8 *next_hop);
	int	(*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop,
			       struct mpath_info *pinfo);
	int	(*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
			       int idx, u8 *dst, u8 *next_hop,
			       struct mpath_info *pinfo);
903
904
905
906
907
908
	int	(*get_mesh_params)(struct wiphy *wiphy,
				struct net_device *dev,
				struct mesh_config *conf);
	int	(*set_mesh_params)(struct wiphy *wiphy,
				struct net_device *dev,
				const struct mesh_config *nconf, u32 mask);
909
910
	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
			      struct bss_parameters *params);
911
912
913

	int	(*set_txq_params)(struct wiphy *wiphy,
				  struct ieee80211_txq_params *params);
914
915
916

	int	(*set_channel)(struct wiphy *wiphy,
			       struct ieee80211_channel *chan,
Sujith's avatar
Sujith committed
917
			       enum nl80211_channel_type channel_type);
918

919
920
	int	(*scan)(struct wiphy *wiphy, struct net_device *dev,
			struct cfg80211_scan_request *request);
921
922
923
924
925
926
927
928
929

	int	(*auth)(struct wiphy *wiphy, struct net_device *dev,
			struct cfg80211_auth_request *req);
	int	(*assoc)(struct wiphy *wiphy, struct net_device *dev,
			 struct cfg80211_assoc_request *req);
	int	(*deauth)(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_deauth_request *req);
	int	(*disassoc)(struct wiphy *wiphy, struct net_device *dev,
			    struct cfg80211_disassoc_request *req);
Johannes Berg's avatar
Johannes Berg committed
930
931
932
933

	int	(*join_ibss)(struct wiphy *wiphy, struct net_device *dev,
			     struct cfg80211_ibss_params *params);
	int	(*leave_ibss)(struct wiphy *wiphy, struct net_device *dev);
934
935

	int	(*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
936
937
};

Johannes Berg's avatar
Johannes Berg committed
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
/*
 * wireless hardware and networking interfaces structures
 * and registration/helper functions
 */

/**
 * struct wiphy - wireless hardware description
 * @idx: the wiphy index assigned to this item
 * @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name>
 * @custom_regulatory: tells us the driver for this device
 * 	has its own custom regulatory domain and cannot identify the
 * 	ISO / IEC 3166 alpha2 it belongs to. When this is enabled
 * 	we will disregard the first regulatory hint (when the
 * 	initiator is %REGDOM_SET_BY_CORE).
 * @strict_regulatory: tells us the driver for this device will ignore
 * 	regulatory domain settings until it gets its own regulatory domain
 * 	via its regulatory_hint(). After its gets its own regulatory domain
 * 	it will only allow further regulatory domain settings to further
 * 	enhance compliance. For example if channel 13 and 14 are disabled
 * 	by this regulatory domain no user regulatory domain can enable these
 * 	channels at a later time. This can be used for devices which do not
 * 	have calibration information gauranteed for frequencies or settings
 * 	outside of its regulatory domain.
 * @reg_notifier: the driver's regulatory notification callback
 * @regd: the driver's regulatory domain, if one was requested via
 * 	the regulatory_hint() API. This can be used by the driver
 *	on the reg_notifier() if it chooses to ignore future
 *	regulatory domain changes caused by other drivers.
 * @signal_type: signal type reported in &struct cfg80211_bss.
 * @cipher_suites: supported cipher suites
 * @n_cipher_suites: number of supported cipher suites
969
970
971
972
973
 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit)
 * @retry_long: Retry limit for long frames (dot11LongRetryLimit)
 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold);
 *	-1 = fragmentation disabled, only odd values >= 256 used
 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled
Johannes Berg's avatar
Johannes Berg committed
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
 */
struct wiphy {
	/* assign these fields before you register the wiphy */

	/* permanent MAC address */
	u8 perm_addr[ETH_ALEN];

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

	bool custom_regulatory;
	bool strict_regulatory;

	enum cfg80211_signal_type signal_type;

	int bss_priv_size;
	u8 max_scan_ssids;
	u16 max_scan_ie_len;

	int n_cipher_suites;
	const u32 *cipher_suites;

996
997
998
999
1000
	u8 retry_short;
	u8 retry_long;
	u32 frag_threshold;
	u32 rts_threshold;

Johannes Berg's avatar
Johannes Berg committed
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
	/* If multiple wiphys are registered and you're handed e.g.
	 * a regular netdev with assigned ieee80211_ptr, you won't
	 * know whether it points to a wiphy your driver has registered
	 * or not. Assign this to something global to your driver to
	 * help determine whether you own this wiphy or not. */
	void *privid;

	struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];

	/* Lets us get back the wiphy on the callback */
	int (*reg_notifier)(struct wiphy *wiphy,
			    struct regulatory_request *request);

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

	const struct ieee80211_regdomain *regd;

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

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

	char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
};

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

/**
 * set_wiphy_dev - set device pointer for wiphy
 *
 * @wiphy: The wiphy whose device to bind
 * @dev: The device to parent it to
 */
static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev)
{
	wiphy->dev.parent = dev;
}

/**
 * wiphy_dev - get wiphy dev pointer
 *
 * @wiphy: The wiphy whose device struct to look up
 */
static inline struct device *wiphy_dev(struct wiphy *wiphy)
{
	return wiphy->dev.parent;
}

/**
 * wiphy_name - get wiphy name
 *
 * @wiphy: The wiphy whose name to return
 */
static inline const char *wiphy_name(struct wiphy *wiphy)
{
	return dev_name(&wiphy->dev);
}

/**
 * wiphy_new - create a new wiphy for use with cfg80211
 *
 * @ops: The configuration operations for this device
 * @sizeof_priv: The size of the private area to allocate
 *
 * Create a new wiphy and associate the given operations with it.
 * @sizeof_priv bytes are allocated for private use.
 *
 * The returned pointer must be assigned to each netdev's
 * ieee80211_ptr for proper operation.
 */
struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv);

/**
 * wiphy_register - register a wiphy with cfg80211
 *
 * @wiphy: The wiphy to register.
 *
 * Returns a non-negative wiphy index or a negative error code.
 */
extern int wiphy_register(struct wiphy *wiphy);

/**
 * wiphy_unregister - deregister a wiphy from cfg80211
 *
 * @wiphy: The wiphy to unregister.
 *
 * After this call, no more requests can be made with this priv
 * pointer, but the call may sleep to wait for an outstanding
 * request that is being handled.
 */
extern void wiphy_unregister(struct wiphy *wiphy);

/**
 * wiphy_free - free wiphy
 *
 * @wiphy: The wiphy to free
 */
extern void wiphy_free(struct wiphy *wiphy);

/**
 * struct wireless_dev - wireless per-netdev state
 *
 * This structure must be allocated by the driver/stack
 * that uses the ieee80211_ptr field in struct net_device
 * (this is intentional so it can be allocated along with
 * the netdev.)
 *
 * @wiphy: pointer to hardware description
 * @iftype: interface type
 * @list: (private) Used to collect the interfaces
 * @netdev: (private) Used to reference back to the netdev
 * @current_bss: (private) Used by the internal configuration code
 * @bssid: (private) Used by the internal configuration code
 * @ssid: (private) Used by the internal configuration code
 * @ssid_len: (private) Used by the internal configuration code
 * @wext: (private) Used by the internal wireless extensions compat code
 * @wext_bssid: (private) Used by the internal wireless extensions compat code
 */
struct wireless_dev {
	struct wiphy *wiphy;
	enum nl80211_iftype iftype;

	/* private to the generic wireless code */
	struct list_head list;
	struct net_device *netdev;

	/* currently used for IBSS - might be rearranged in the future */
	struct cfg80211_bss *current_bss;
	u8 bssid[ETH_ALEN];
	u8 ssid[IEEE80211_MAX_SSID_LEN];
	u8 ssid_len;

#ifdef CONFIG_WIRELESS_EXT
	/* wext data */
	struct cfg80211_ibss_params wext;
	u8 wext_bssid[ETH_ALEN];
#endif
};

/**
 * wdev_priv - return wiphy priv from wireless_dev
 *
 * @wdev: The wireless device whose wiphy's priv pointer to return
 */
static inline void *wdev_priv(struct wireless_dev *wdev)
{
	BUG_ON(!wdev);
	return wiphy_priv(wdev->wiphy);
}

/*
 * Utility functions
 */

/**
 * ieee80211_channel_to_frequency - convert channel number to frequency
 */
extern int ieee80211_channel_to_frequency(int chan);

/**
 * ieee80211_frequency_to_channel - convert frequency to channel number
 */
extern int ieee80211_frequency_to_channel(int freq);

/*
 * Name indirection necessary because the ieee80211 code also has
 * a function named "ieee80211_get_channel", so if you include
 * cfg80211's header file you get cfg80211's version, if you try
 * to include both header files you'll (rightfully!) get a symbol
 * clash.
 */
extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
							 int freq);
/**
 * ieee80211_get_channel - get channel struct from wiphy for specified frequency
 */
static inline struct ieee80211_channel *
ieee80211_get_channel(struct wiphy *wiphy, int freq)
{
	return __ieee80211_get_channel(wiphy, freq);
}

/**
 * ieee80211_get_response_rate - get basic rate for a given rate
 *
 * @sband: the band to look for rates in
 * @basic_rates: bitmap of basic rates
 * @bitrate: the bitrate for which to find the basic rate
 *
 * This function returns the basic rate corresponding to a given
 * bitrate, that is the next lower bitrate contained in the basic
 * rate map, which is, for this function, given as a bitmap of
 * indices of rates in the band's bitrate table.
 */
struct ieee80211_rate *
ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
			    u32 basic_rates, int bitrate);

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

/**
 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
 * @rtheader: pointer to the radiotap header we are walking through
 * @max_length: length of radiotap header in cpu byte ordering
 * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg
 * @this_arg: pointer to current radiotap arg
 * @arg_index: internal next argument index
 * @arg: internal next argument pointer
 * @next_bitmap: internal pointer to next present u32
 * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
 */

struct ieee80211_radiotap_iterator {
	struct ieee80211_radiotap_header *rtheader;
	int max_length;
	int this_arg_index;
	u8 *this_arg;

	int arg_index;
	u8 *arg;
	__le32 *next_bitmap;
	u32 bitmap_shifter;
};

extern int ieee80211_radiotap_iterator_init(
   struct ieee80211_radiotap_iterator *iterator,
   struct ieee80211_radiotap_header *radiotap_header,
   int max_length);

extern int ieee80211_radiotap_iterator_next(
   struct ieee80211_radiotap_iterator *iterator);

/*
 * Regulatory helper functions for wiphys
 */

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

/**
 * regulatory_hint_11d - hints a country IE as a regulatory domain
 * @wiphy: the wireless device giving the hint (used only for reporting
 *	conflicts)
 * @country_ie: pointer to the country IE
 * @country_ie_len: length of the country IE
 *
 * We will intersect the rd with the what CRDA tells us should apply
 * for the alpha2 this country IE belongs to, this prevents APs from
 * sending us incorrect or outdated information against a country.
 */
extern void regulatory_hint_11d(struct wiphy *wiphy,
				u8 *country_ie,
				u8 country_ie_len);
/**
 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
 * @wiphy: the wireless device we want to process the regulatory domain on
 * @regd: the custom regulatory domain to use for this wiphy
 *
 * Drivers can sometimes have custom regulatory domains which do not apply
 * to a specific country. Drivers can use this to apply such custom regulatory
 * domains. This routine must be called prior to wiphy registration. The
 * custom regulatory domain will be trusted completely and as such previous
 * default channel settings will be disregarded. If no rule is found for a
 * channel on the regulatory domain the channel will be disabled.
 */
extern void wiphy_apply_custom_regulatory(
	struct wiphy *wiphy,
	const struct ieee80211_regdomain *regd);

/**
 * freq_reg_info - get regulatory information for the given frequency
 * @wiphy: the wiphy for which we want to process this rule for
 * @center_freq: Frequency in KHz for which we want regulatory information for
 * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one
 * 	you can set this to 0. If this frequency is allowed we then set
 * 	this value to the maximum allowed bandwidth.
 * @reg_rule: the regulatory rule which we have for this frequency
 *
 * Use this function to get the regulatory rule for a specific frequency on
 * a given wireless device. If the device has a specific regulatory domain
 * it wants to follow we respect that unless a country IE has been received
 * and processed already.
 *
 * Returns 0 if it was able to find a valid regulatory rule which does
 * apply to the given center_freq otherwise it returns non-zero. It will
 * also return -ERANGE if we determine the given center_freq does not even have
 * a regulatory rule for a frequency range in the center_freq's band. See
 * freq_in_rule_band() for our current definition of a band -- this is purely
 * subjective and right now its 802.11 specific.
 */
extern int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth,
			 const struct ieee80211_reg_rule **reg_rule);

/*
 * Temporary wext handlers & helper functions
 *
 * In the future cfg80211 will simply assign the entire wext handler
 * structure to netdevs it manages, but we're not there yet.
 */
Johannes Berg's avatar
Johannes Berg committed
1338
1339
1340
int cfg80211_wext_giwname(struct net_device *dev,
			  struct iw_request_info *info,
			  char *name, char *extra);
1341
1342
1343
1344
int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
			  u32 *mode, char *extra);
int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
			  u32 *mode, char *extra);
1345
1346
1347
1348
1349
1350
int cfg80211_wext_siwscan(struct net_device *dev,
			  struct iw_request_info *info,
			  union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwscan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *data, char *extra);
1351
1352
1353
int cfg80211_wext_siwmlme(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *data, char *extra);
1354
1355
1356
int cfg80211_wext_giwrange(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *data, char *extra);
Johannes Berg's avatar
Johannes Berg committed
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_freq *freq, char *extra);
int cfg80211_ibss_wext_giwfreq(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_freq *freq, char *extra);
int cfg80211_ibss_wext_siwessid(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_point *data, char *ssid);
int cfg80211_ibss_wext_giwessid(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_point *data, char *ssid);
int cfg80211_ibss_wext_siwap(struct net_device *dev,
			     struct iw_request_info *info,
			     struct sockaddr *ap_addr, char *extra);
int cfg80211_ibss_wext_giwap(struct net_device *dev,
			     struct iw_request_info *info,
			     struct sockaddr *ap_addr, char *extra);

struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
					     struct iw_freq *freq);
1378

1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
int cfg80211_wext_siwrts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *rts, char *extra);
int cfg80211_wext_giwrts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *rts, char *extra);
int cfg80211_wext_siwfrag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *frag, char *extra);
int cfg80211_wext_giwfrag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *frag, char *extra);
int cfg80211_wext_siwretry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *retry, char *extra);
int cfg80211_wext_giwretry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *retry, char *extra);

Johannes Berg's avatar
Johannes Berg committed
1398
1399
1400
1401
1402
/*
 * callbacks for asynchronous cfg80211 methods, notification
 * functions and BSS handling helpers
 */

1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
/**
 * cfg80211_scan_done - notify that scan finished
 *
 * @request: the corresponding scan request
 * @aborted: set to true if the scan was aborted for any reason,
 *	userspace will be notified of that
 */
void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted);

/**
 * cfg80211_inform_bss - inform cfg80211 of a new BSS
 *
 * @wiphy: the wiphy reporting the BSS
 * @bss: the found BSS
Johannes Berg's avatar
Johannes Berg committed
1417
 * @signal: the signal strength, type depends on the wiphy's signal_type
1418
1419
1420
1421
1422
1423
1424
1425
1426
 * @gfp: context flags
 *
 * This informs cfg80211 that BSS information was found and
 * the BSS should be updated/added.
 */
struct cfg80211_bss*
cfg80211_inform_bss_frame(struct wiphy *wiphy,
			  struct ieee80211_channel *channel,
			  struct ieee80211_mgmt *mgmt, size_t len,
Johannes Berg's avatar
Johannes Berg committed
1427
			  s32 signal, gfp_t gfp);
1428

1429
1430
1431
1432
1433
1434
1435
1436
struct cfg80211_bss*
cfg80211_inform_bss(struct wiphy *wiphy,
		    struct ieee80211_channel *channel,
		    const u8 *bssid,
		    u64 timestamp, u16 capability, u16 beacon_interval,
		    const u8 *ie, size_t ielen,
		    s32 signal, gfp_t gfp);

1437
1438
1439
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
				      struct ieee80211_channel *channel,
				      const u8 *bssid,
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
				      const u8 *ssid, size_t ssid_len,
				      u16 capa_mask, u16 capa_val);
static inline struct cfg80211_bss *
cfg80211_get_ibss(struct wiphy *wiphy,
		  struct ieee80211_channel *channel,
		  const u8 *ssid, size_t ssid_len)
{
	return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len,
				WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
}

1451
1452
1453
1454
1455
struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
				       struct ieee80211_channel *channel,
				       const u8 *meshid, size_t meshidlen,
				       const u8 *meshcfg);
void cfg80211_put_bss(struct cfg80211_bss *bss);
Johannes Berg's avatar
Johannes Berg committed
1456

1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
/**
 * cfg80211_unlink_bss - unlink BSS from internal data structures
 * @wiphy: the wiphy
 * @bss: the bss to remove
 *
 * This function removes the given BSS from the internal data structures
 * thereby making it no longer show up in scan results etc. Use this
 * function when you detect a BSS is gone. Normally BSSes will also time
 * out, so it is not necessary to use this function at all.
 */
void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
Johannes Berg's avatar
Johannes Berg committed
1468

1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
/**
 * cfg80211_send_rx_auth - notification of processed authentication
 * @dev: network device
 * @buf: authentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever an authentication has been processed in
 * station mode.
 */
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);

/**
 * cfg80211_send_rx_assoc - notification of processed association
 * @dev: network device
 * @buf: (re)association response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever a (re)association response has been
 * processed in station mode.
 */
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len);

/**
1492
 * cfg80211_send_deauth - notification of processed deauthentication
1493
1494
1495
1496
1497
 * @dev: network device
 * @buf: deauthentication frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever deauthentication has been processed in
1498
1499
 * station mode. This includes both received deauthentication frames and
 * locally generated ones.
1500
 */
1501
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
1502
1503

/**
1504
 * cfg80211_send_disassoc - notification of processed disassociation
1505
1506
1507
1508
1509
 * @dev: network device
 * @buf: disassociation response frame (header + body)
 * @len: length of the frame data
 *
 * This function is called whenever disassociation has been processed in
1510
1511
 * station mode. This includes both received disassociation frames and locally
 * generated ones.
1512
 */
1513
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);
1514

Kalle Valo's avatar
Kalle Valo committed
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
/**
 * cfg80211_hold_bss - exclude bss from expiration
 * @bss: bss which should not expire
 *
 * In a case when the BSS is not updated but it shouldn't expire this
 * function can be used to mark the BSS to be excluded from expiration.
 */
void cfg80211_hold_bss(struct cfg80211_bss *bss);

/**
 * cfg80211_unhold_bss - remove expiration exception from the BSS
 * @bss: bss which can expire again
 *
 * This function marks the BSS to be expirable again.
 */
void cfg80211_unhold_bss(struct cfg80211_bss *bss);

1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
/**
 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
 * @dev: network device
 * @addr: The source MAC address of the frame
 * @key_type: The key type that the received frame used
 * @key_id: Key identifier (0..3)
 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
 *
 * This function is called whenever the local MAC detects a MIC failure in a
 * received frame. This matches with MLME-MICHAELMICFAILURE.indication()
 * primitive.
 */
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
				  enum nl80211_key_type key_type, int key_id,
				  const u8 *tsc);

Johannes Berg's avatar
Johannes Berg committed
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
/**
 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
 *
 * @dev: network device
 * @bssid: the BSSID of the IBSS joined
 * @gfp: allocation flags
 *
 * This function notifies cfg80211 that the device joined an IBSS or
 * switched to a different BSSID. Before this function can be called,
 * either a beacon has to have been received from the IBSS, or one of
 * the cfg80211_inform_bss{,_frame} functions must have been called
 * with the locally generated beacon -- this guarantees that there is
 * always a scan result for this IBSS. cfg80211 will handle the rest.
 */
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp);

1564
#endif /* __NET_CFG80211_H */