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CommitLineData
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1/*
2 * IEEE 802.11 defines
3 *
4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
5 * <jkmaline@cc.hut.fi>
6 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
7 * Copyright (c) 2005, Devicescape Software, Inc.
8 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
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15#ifndef LINUX_IEEE80211_H
16#define LINUX_IEEE80211_H
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17
18#include <linux/types.h>
f97df02e 19#include <asm/byteorder.h>
a9de8ce0 20
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21/*
22 * DS bit usage
23 *
24 * TA = transmitter address
25 * RA = receiver address
26 * DA = destination address
27 * SA = source address
28 *
29 * ToDS FromDS A1(RA) A2(TA) A3 A4 Use
30 * -----------------------------------------------------------------
31 * 0 0 DA SA BSSID - IBSS/DLS
32 * 0 1 DA BSSID SA - AP -> STA
33 * 1 0 BSSID SA DA - AP <- STA
34 * 1 1 RA TA DA SA unspecified (WDS)
35 */
36
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37#define FCS_LEN 4
38
39#define IEEE80211_FCTL_VERS 0x0003
40#define IEEE80211_FCTL_FTYPE 0x000c
41#define IEEE80211_FCTL_STYPE 0x00f0
42#define IEEE80211_FCTL_TODS 0x0100
43#define IEEE80211_FCTL_FROMDS 0x0200
44#define IEEE80211_FCTL_MOREFRAGS 0x0400
45#define IEEE80211_FCTL_RETRY 0x0800
46#define IEEE80211_FCTL_PM 0x1000
47#define IEEE80211_FCTL_MOREDATA 0x2000
48#define IEEE80211_FCTL_PROTECTED 0x4000
49#define IEEE80211_FCTL_ORDER 0x8000
50
51#define IEEE80211_SCTL_FRAG 0x000F
52#define IEEE80211_SCTL_SEQ 0xFFF0
53
54#define IEEE80211_FTYPE_MGMT 0x0000
55#define IEEE80211_FTYPE_CTL 0x0004
56#define IEEE80211_FTYPE_DATA 0x0008
57
58/* management */
59#define IEEE80211_STYPE_ASSOC_REQ 0x0000
60#define IEEE80211_STYPE_ASSOC_RESP 0x0010
61#define IEEE80211_STYPE_REASSOC_REQ 0x0020
62#define IEEE80211_STYPE_REASSOC_RESP 0x0030
63#define IEEE80211_STYPE_PROBE_REQ 0x0040
64#define IEEE80211_STYPE_PROBE_RESP 0x0050
65#define IEEE80211_STYPE_BEACON 0x0080
66#define IEEE80211_STYPE_ATIM 0x0090
67#define IEEE80211_STYPE_DISASSOC 0x00A0
68#define IEEE80211_STYPE_AUTH 0x00B0
69#define IEEE80211_STYPE_DEAUTH 0x00C0
70#define IEEE80211_STYPE_ACTION 0x00D0
71
72/* control */
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73#define IEEE80211_STYPE_BACK_REQ 0x0080
74#define IEEE80211_STYPE_BACK 0x0090
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75#define IEEE80211_STYPE_PSPOLL 0x00A0
76#define IEEE80211_STYPE_RTS 0x00B0
77#define IEEE80211_STYPE_CTS 0x00C0
78#define IEEE80211_STYPE_ACK 0x00D0
79#define IEEE80211_STYPE_CFEND 0x00E0
80#define IEEE80211_STYPE_CFENDACK 0x00F0
81
82/* data */
83#define IEEE80211_STYPE_DATA 0x0000
84#define IEEE80211_STYPE_DATA_CFACK 0x0010
85#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
86#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
87#define IEEE80211_STYPE_NULLFUNC 0x0040
88#define IEEE80211_STYPE_CFACK 0x0050
89#define IEEE80211_STYPE_CFPOLL 0x0060
90#define IEEE80211_STYPE_CFACKPOLL 0x0070
91#define IEEE80211_STYPE_QOS_DATA 0x0080
92#define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090
93#define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0
94#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0
95#define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0
96#define IEEE80211_STYPE_QOS_CFACK 0x00D0
97#define IEEE80211_STYPE_QOS_CFPOLL 0x00E0
98#define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0
99
100
101/* miscellaneous IEEE 802.11 constants */
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102#define IEEE80211_MAX_FRAG_THRESHOLD 2352
103#define IEEE80211_MAX_RTS_THRESHOLD 2353
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104#define IEEE80211_MAX_AID 2007
105#define IEEE80211_MAX_TIM_LEN 251
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106/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
107 6.2.1.1.2.
108
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109 802.11e clarifies the figure in section 7.1.2. The frame body is
110 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
111#define IEEE80211_MAX_DATA_LEN 2304
112/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
113#define IEEE80211_MAX_FRAME_LEN 2352
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114
115#define IEEE80211_MAX_SSID_LEN 32
1239cd58 116
37c57989 117#define IEEE80211_MAX_MESH_ID_LEN 32
1239cd58 118
fd7c8a40 119#define IEEE80211_QOS_CTL_LEN 2
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120#define IEEE80211_QOS_CTL_TID_MASK 0x000F
121#define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
a9de8ce0 122
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123/* U-APSD queue for WMM IEs sent by AP */
124#define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7)
125
126/* U-APSD queues for WMM IEs sent by STA */
127#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0)
128#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1)
129#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2)
130#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3)
131#define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f
132
133/* U-APSD max SP length for WMM IEs sent by STA */
134#define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00
135#define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01
136#define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02
137#define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03
138#define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03
139#define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5
140
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141#define IEEE80211_HT_CTL_LEN 4
142
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143struct ieee80211_hdr {
144 __le16 frame_control;
145 __le16 duration_id;
146 u8 addr1[6];
147 u8 addr2[6];
148 u8 addr3[6];
149 __le16 seq_ctrl;
150 u8 addr4[6];
151} __attribute__ ((packed));
152
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153struct ieee80211_hdr_3addr {
154 __le16 frame_control;
155 __le16 duration_id;
156 u8 addr1[6];
157 u8 addr2[6];
158 u8 addr3[6];
159 __le16 seq_ctrl;
160} __attribute__ ((packed));
161
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162struct ieee80211_qos_hdr {
163 __le16 frame_control;
164 __le16 duration_id;
165 u8 addr1[6];
166 u8 addr2[6];
167 u8 addr3[6];
168 __le16 seq_ctrl;
169 __le16 qos_ctrl;
170} __attribute__ ((packed));
171
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172/**
173 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
174 * @fc: frame control bytes in little-endian byteorder
175 */
176static inline int ieee80211_has_tods(__le16 fc)
177{
178 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
179}
180
181/**
182 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
183 * @fc: frame control bytes in little-endian byteorder
184 */
185static inline int ieee80211_has_fromds(__le16 fc)
186{
187 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
188}
189
190/**
191 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
192 * @fc: frame control bytes in little-endian byteorder
193 */
194static inline int ieee80211_has_a4(__le16 fc)
195{
196 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
197 return (fc & tmp) == tmp;
198}
199
200/**
201 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
202 * @fc: frame control bytes in little-endian byteorder
203 */
204static inline int ieee80211_has_morefrags(__le16 fc)
205{
206 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
207}
208
209/**
210 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
211 * @fc: frame control bytes in little-endian byteorder
212 */
213static inline int ieee80211_has_retry(__le16 fc)
214{
215 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
216}
217
218/**
219 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
220 * @fc: frame control bytes in little-endian byteorder
221 */
222static inline int ieee80211_has_pm(__le16 fc)
223{
224 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
225}
226
227/**
228 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
229 * @fc: frame control bytes in little-endian byteorder
230 */
231static inline int ieee80211_has_moredata(__le16 fc)
232{
233 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
234}
235
236/**
237 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
238 * @fc: frame control bytes in little-endian byteorder
239 */
240static inline int ieee80211_has_protected(__le16 fc)
241{
242 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
243}
244
245/**
246 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
247 * @fc: frame control bytes in little-endian byteorder
248 */
249static inline int ieee80211_has_order(__le16 fc)
250{
251 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
252}
253
254/**
255 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
256 * @fc: frame control bytes in little-endian byteorder
257 */
258static inline int ieee80211_is_mgmt(__le16 fc)
259{
260 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
261 cpu_to_le16(IEEE80211_FTYPE_MGMT);
262}
263
264/**
265 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
266 * @fc: frame control bytes in little-endian byteorder
267 */
268static inline int ieee80211_is_ctl(__le16 fc)
269{
270 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
271 cpu_to_le16(IEEE80211_FTYPE_CTL);
272}
273
274/**
275 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
276 * @fc: frame control bytes in little-endian byteorder
277 */
278static inline int ieee80211_is_data(__le16 fc)
279{
280 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
281 cpu_to_le16(IEEE80211_FTYPE_DATA);
282}
283
284/**
285 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
286 * @fc: frame control bytes in little-endian byteorder
287 */
288static inline int ieee80211_is_data_qos(__le16 fc)
289{
290 /*
291 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
292 * to check the one bit
293 */
294 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
295 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
296}
297
298/**
299 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
300 * @fc: frame control bytes in little-endian byteorder
301 */
302static inline int ieee80211_is_data_present(__le16 fc)
303{
304 /*
305 * mask with 0x40 and test that that bit is clear to only return true
306 * for the data-containing substypes.
307 */
308 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
309 cpu_to_le16(IEEE80211_FTYPE_DATA);
310}
311
312/**
313 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
314 * @fc: frame control bytes in little-endian byteorder
315 */
316static inline int ieee80211_is_assoc_req(__le16 fc)
317{
318 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
319 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
320}
321
322/**
323 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
324 * @fc: frame control bytes in little-endian byteorder
325 */
326static inline int ieee80211_is_assoc_resp(__le16 fc)
327{
328 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
329 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
330}
331
332/**
333 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
334 * @fc: frame control bytes in little-endian byteorder
335 */
336static inline int ieee80211_is_reassoc_req(__le16 fc)
337{
338 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
339 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
340}
341
342/**
343 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
344 * @fc: frame control bytes in little-endian byteorder
345 */
346static inline int ieee80211_is_reassoc_resp(__le16 fc)
347{
348 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
349 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
350}
351
352/**
353 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
354 * @fc: frame control bytes in little-endian byteorder
355 */
356static inline int ieee80211_is_probe_req(__le16 fc)
357{
358 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
359 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
360}
361
362/**
363 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
364 * @fc: frame control bytes in little-endian byteorder
365 */
366static inline int ieee80211_is_probe_resp(__le16 fc)
367{
368 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
369 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
370}
371
372/**
373 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
374 * @fc: frame control bytes in little-endian byteorder
375 */
376static inline int ieee80211_is_beacon(__le16 fc)
377{
378 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
379 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
380}
381
382/**
383 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
384 * @fc: frame control bytes in little-endian byteorder
385 */
386static inline int ieee80211_is_atim(__le16 fc)
387{
388 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
389 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
390}
391
392/**
393 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
394 * @fc: frame control bytes in little-endian byteorder
395 */
396static inline int ieee80211_is_disassoc(__le16 fc)
397{
398 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
399 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
400}
401
402/**
403 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
404 * @fc: frame control bytes in little-endian byteorder
405 */
406static inline int ieee80211_is_auth(__le16 fc)
407{
408 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
409 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
410}
411
412/**
413 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
414 * @fc: frame control bytes in little-endian byteorder
415 */
416static inline int ieee80211_is_deauth(__le16 fc)
417{
418 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
419 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
420}
421
422/**
423 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
424 * @fc: frame control bytes in little-endian byteorder
425 */
426static inline int ieee80211_is_action(__le16 fc)
427{
428 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
429 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
430}
431
432/**
433 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
434 * @fc: frame control bytes in little-endian byteorder
435 */
436static inline int ieee80211_is_back_req(__le16 fc)
437{
438 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
439 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
440}
441
442/**
443 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
444 * @fc: frame control bytes in little-endian byteorder
445 */
446static inline int ieee80211_is_back(__le16 fc)
447{
448 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
449 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
450}
451
452/**
453 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
454 * @fc: frame control bytes in little-endian byteorder
455 */
456static inline int ieee80211_is_pspoll(__le16 fc)
457{
458 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
459 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
460}
461
462/**
463 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
464 * @fc: frame control bytes in little-endian byteorder
465 */
466static inline int ieee80211_is_rts(__le16 fc)
467{
468 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
469 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
470}
471
472/**
473 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
474 * @fc: frame control bytes in little-endian byteorder
475 */
476static inline int ieee80211_is_cts(__le16 fc)
477{
478 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
479 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
480}
481
482/**
483 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
484 * @fc: frame control bytes in little-endian byteorder
485 */
486static inline int ieee80211_is_ack(__le16 fc)
487{
488 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
489 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
490}
491
492/**
493 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
494 * @fc: frame control bytes in little-endian byteorder
495 */
496static inline int ieee80211_is_cfend(__le16 fc)
497{
498 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
499 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
500}
501
502/**
503 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
504 * @fc: frame control bytes in little-endian byteorder
505 */
506static inline int ieee80211_is_cfendack(__le16 fc)
507{
508 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
509 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
510}
511
512/**
22403def 513 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
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514 * @fc: frame control bytes in little-endian byteorder
515 */
516static inline int ieee80211_is_nullfunc(__le16 fc)
517{
518 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
519 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
520}
a9de8ce0 521
22403def
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522/**
523 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
524 * @fc: frame control bytes in little-endian byteorder
525 */
526static inline int ieee80211_is_qos_nullfunc(__le16 fc)
527{
528 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
529 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
530}
531
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532struct ieee80211s_hdr {
533 u8 flags;
534 u8 ttl;
51ceddad 535 __le32 seqnum;
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536 u8 eaddr1[6];
537 u8 eaddr2[6];
538 u8 eaddr3[6];
539} __attribute__ ((packed));
540
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541/* Mesh flags */
542#define MESH_FLAGS_AE_A4 0x1
543#define MESH_FLAGS_AE_A5_A6 0x2
e31a16d6 544#define MESH_FLAGS_AE 0x3
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545#define MESH_FLAGS_PS_DEEP 0x4
546
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547/**
548 * struct ieee80211_quiet_ie
549 *
550 * This structure refers to "Quiet information element"
551 */
552struct ieee80211_quiet_ie {
553 u8 count;
554 u8 period;
555 __le16 duration;
556 __le16 offset;
557} __attribute__ ((packed));
558
559/**
560 * struct ieee80211_msrment_ie
561 *
562 * This structure refers to "Measurement Request/Report information element"
563 */
564struct ieee80211_msrment_ie {
565 u8 token;
566 u8 mode;
567 u8 type;
568 u8 request[0];
569} __attribute__ ((packed));
570
571/**
572 * struct ieee80211_channel_sw_ie
573 *
574 * This structure refers to "Channel Switch Announcement information element"
575 */
576struct ieee80211_channel_sw_ie {
577 u8 mode;
578 u8 new_ch_num;
579 u8 count;
580} __attribute__ ((packed));
37c57989 581
98f7dfd8
EG
582/**
583 * struct ieee80211_tim
584 *
585 * This structure refers to "Traffic Indication Map information element"
586 */
587struct ieee80211_tim_ie {
588 u8 dtim_count;
589 u8 dtim_period;
590 u8 bitmap_ctrl;
591 /* variable size: 1 - 251 bytes */
e7ec86f5 592 u8 virtual_map[1];
98f7dfd8
EG
593} __attribute__ ((packed));
594
136cfa28
RP
595/**
596 * struct ieee80211_meshconf_ie
597 *
598 * This structure refers to "Mesh Configuration information element"
599 */
600struct ieee80211_meshconf_ie {
601 u8 meshconf_psel;
602 u8 meshconf_pmetric;
603 u8 meshconf_congest;
604 u8 meshconf_synch;
605 u8 meshconf_auth;
606 u8 meshconf_form;
607 u8 meshconf_cap;
608} __attribute__ ((packed));
609
90a5e169
RP
610/**
611 * struct ieee80211_rann_ie
612 *
613 * This structure refers to "Root Announcement information element"
614 */
615struct ieee80211_rann_ie {
616 u8 rann_flags;
617 u8 rann_hopcount;
618 u8 rann_ttl;
619 u8 rann_addr[6];
620 u32 rann_seq;
621 u32 rann_metric;
622} __attribute__ ((packed));
623
9dfd6ba3 624#define WLAN_SA_QUERY_TR_ID_LEN 2
fea14732 625
a9de8ce0
JB
626struct ieee80211_mgmt {
627 __le16 frame_control;
628 __le16 duration;
629 u8 da[6];
630 u8 sa[6];
631 u8 bssid[6];
632 __le16 seq_ctrl;
633 union {
634 struct {
635 __le16 auth_alg;
636 __le16 auth_transaction;
637 __le16 status_code;
638 /* possibly followed by Challenge text */
639 u8 variable[0];
640 } __attribute__ ((packed)) auth;
641 struct {
642 __le16 reason_code;
643 } __attribute__ ((packed)) deauth;
644 struct {
645 __le16 capab_info;
646 __le16 listen_interval;
647 /* followed by SSID and Supported rates */
648 u8 variable[0];
649 } __attribute__ ((packed)) assoc_req;
650 struct {
651 __le16 capab_info;
652 __le16 status_code;
653 __le16 aid;
654 /* followed by Supported rates */
655 u8 variable[0];
656 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
657 struct {
658 __le16 capab_info;
659 __le16 listen_interval;
660 u8 current_ap[6];
661 /* followed by SSID and Supported rates */
662 u8 variable[0];
663 } __attribute__ ((packed)) reassoc_req;
664 struct {
665 __le16 reason_code;
666 } __attribute__ ((packed)) disassoc;
667 struct {
668 __le64 timestamp;
669 __le16 beacon_int;
670 __le16 capab_info;
671 /* followed by some of SSID, Supported rates,
672 * FH Params, DS Params, CF Params, IBSS Params, TIM */
673 u8 variable[0];
674 } __attribute__ ((packed)) beacon;
675 struct {
676 /* only variable items: SSID, Supported rates */
677 u8 variable[0];
678 } __attribute__ ((packed)) probe_req;
679 struct {
680 __le64 timestamp;
681 __le16 beacon_int;
682 __le16 capab_info;
683 /* followed by some of SSID, Supported rates,
684 * FH Params, DS Params, CF Params, IBSS Params */
685 u8 variable[0];
686 } __attribute__ ((packed)) probe_resp;
687 struct {
688 u8 category;
689 union {
690 struct {
691 u8 action_code;
692 u8 dialog_token;
693 u8 status_code;
694 u8 variable[0];
695 } __attribute__ ((packed)) wme_action;
696 struct{
697 u8 action_code;
698 u8 element_id;
699 u8 length;
f2df3859 700 struct ieee80211_channel_sw_ie sw_elem;
a9de8ce0 701 } __attribute__((packed)) chan_switch;
f2df3859
AK
702 struct{
703 u8 action_code;
704 u8 dialog_token;
705 u8 element_id;
706 u8 length;
707 struct ieee80211_msrment_ie msr_elem;
708 } __attribute__((packed)) measurement;
6b4e3241
RR
709 struct{
710 u8 action_code;
711 u8 dialog_token;
712 __le16 capab;
713 __le16 timeout;
714 __le16 start_seq_num;
715 } __attribute__((packed)) addba_req;
716 struct{
717 u8 action_code;
718 u8 dialog_token;
719 __le16 status;
720 __le16 capab;
721 __le16 timeout;
722 } __attribute__((packed)) addba_resp;
723 struct{
724 u8 action_code;
725 __le16 params;
726 __le16 reason_code;
727 } __attribute__((packed)) delba;
37c57989
LCC
728 struct{
729 u8 action_code;
730 /* capab_info for open and confirm,
731 * reason for close
732 */
733 __le16 aux;
734 /* Followed in plink_confirm by status
735 * code, AID and supported rates,
736 * and directly by supported rates in
737 * plink_open and plink_close
738 */
739 u8 variable[0];
740 } __attribute__((packed)) plink_action;
741 struct{
742 u8 action_code;
743 u8 variable[0];
744 } __attribute__((packed)) mesh_action;
fea14732
JM
745 struct {
746 u8 action;
747 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
748 } __attribute__ ((packed)) sa_query;
0f78231b
JB
749 struct {
750 u8 action;
751 u8 smps_control;
752 } __attribute__ ((packed)) ht_smps;
a9de8ce0
JB
753 } u;
754 } __attribute__ ((packed)) action;
755 } u;
756} __attribute__ ((packed));
757
44d414db
JB
758/* mgmt header + 1 byte category code */
759#define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
760
a9de8ce0 761
765cb46a
JM
762/* Management MIC information element (IEEE 802.11w) */
763struct ieee80211_mmie {
764 u8 element_id;
765 u8 length;
766 __le16 key_id;
767 u8 sequence_number[6];
768 u8 mic[8];
769} __attribute__ ((packed));
770
a9de8ce0
JB
771/* Control frames */
772struct ieee80211_rts {
773 __le16 frame_control;
774 __le16 duration;
775 u8 ra[6];
776 u8 ta[6];
777} __attribute__ ((packed));
778
779struct ieee80211_cts {
780 __le16 frame_control;
781 __le16 duration;
782 u8 ra[6];
783} __attribute__ ((packed));
784
fc6971d4
JM
785struct ieee80211_pspoll {
786 __le16 frame_control;
787 __le16 aid;
788 u8 bssid[6];
789 u8 ta[6];
790} __attribute__ ((packed));
791
6b4e3241
RR
792/**
793 * struct ieee80211_bar - HT Block Ack Request
794 *
795 * This structure refers to "HT BlockAckReq" as
796 * described in 802.11n draft section 7.2.1.7.1
797 */
798struct ieee80211_bar {
799 __le16 frame_control;
800 __le16 duration;
801 __u8 ra[6];
802 __u8 ta[6];
a8b47ea3
RR
803 __le16 control;
804 __le16 start_seq_num;
6b4e3241
RR
805} __attribute__((packed));
806
429a3805
RR
807/* 802.11 BAR control masks */
808#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
809#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
810
d9fe60de
JB
811
812#define IEEE80211_HT_MCS_MASK_LEN 10
813
814/**
815 * struct ieee80211_mcs_info - MCS information
816 * @rx_mask: RX mask
9da3e068
LR
817 * @rx_highest: highest supported RX rate. If set represents
818 * the highest supported RX data rate in units of 1 Mbps.
819 * If this field is 0 this value should not be used to
820 * consider the highest RX data rate supported.
d9fe60de
JB
821 * @tx_params: TX parameters
822 */
823struct ieee80211_mcs_info {
824 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
825 __le16 rx_highest;
826 u8 tx_params;
827 u8 reserved[3];
828} __attribute__((packed));
829
830/* 802.11n HT capability MSC set */
831#define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
832#define IEEE80211_HT_MCS_TX_DEFINED 0x01
833#define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
834/* value 0 == 1 stream etc */
835#define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
836#define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
837#define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
838#define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
839
840/*
841 * 802.11n D5.0 20.3.5 / 20.6 says:
842 * - indices 0 to 7 and 32 are single spatial stream
843 * - 8 to 31 are multiple spatial streams using equal modulation
844 * [8..15 for two streams, 16..23 for three and 24..31 for four]
845 * - remainder are multiple spatial streams using unequal modulation
846 */
847#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
848#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
849 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
850
6b4e3241
RR
851/**
852 * struct ieee80211_ht_cap - HT capabilities
853 *
d9fe60de
JB
854 * This structure is the "HT capabilities element" as
855 * described in 802.11n D5.0 7.3.2.57
6b4e3241
RR
856 */
857struct ieee80211_ht_cap {
858 __le16 cap_info;
859 u8 ampdu_params_info;
d9fe60de
JB
860
861 /* 16 bytes MCS information */
862 struct ieee80211_mcs_info mcs;
863
6b4e3241
RR
864 __le16 extended_ht_cap_info;
865 __le32 tx_BF_cap_info;
866 u8 antenna_selection_info;
867} __attribute__ ((packed));
868
d9fe60de
JB
869/* 802.11n HT capabilities masks (for cap_info) */
870#define IEEE80211_HT_CAP_LDPC_CODING 0x0001
871#define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
872#define IEEE80211_HT_CAP_SM_PS 0x000C
0f78231b 873#define IEEE80211_HT_CAP_SM_PS_SHIFT 2
d9fe60de
JB
874#define IEEE80211_HT_CAP_GRN_FLD 0x0010
875#define IEEE80211_HT_CAP_SGI_20 0x0020
876#define IEEE80211_HT_CAP_SGI_40 0x0040
877#define IEEE80211_HT_CAP_TX_STBC 0x0080
878#define IEEE80211_HT_CAP_RX_STBC 0x0300
f79d9bad 879#define IEEE80211_HT_CAP_RX_STBC_SHIFT 8
d9fe60de
JB
880#define IEEE80211_HT_CAP_DELAY_BA 0x0400
881#define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
882#define IEEE80211_HT_CAP_DSSSCCK40 0x1000
9a418af5 883#define IEEE80211_HT_CAP_RESERVED 0x2000
d9fe60de
JB
884#define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
885#define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
886
887/* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
888#define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
889#define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
0f78231b 890#define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2
d9fe60de 891
d1eba248
S
892/*
893 * Maximum length of AMPDU that the STA can receive.
894 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
895 */
896enum ieee80211_max_ampdu_length_exp {
897 IEEE80211_HT_MAX_AMPDU_8K = 0,
898 IEEE80211_HT_MAX_AMPDU_16K = 1,
899 IEEE80211_HT_MAX_AMPDU_32K = 2,
900 IEEE80211_HT_MAX_AMPDU_64K = 3
901};
902
903#define IEEE80211_HT_MAX_AMPDU_FACTOR 13
904
905/* Minimum MPDU start spacing */
906enum ieee80211_min_mpdu_spacing {
907 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */
908 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */
909 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */
910 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */
911 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */
912 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */
913 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */
914 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */
915};
916
6b4e3241 917/**
d9fe60de 918 * struct ieee80211_ht_info - HT information
6b4e3241 919 *
d9fe60de
JB
920 * This structure is the "HT information element" as
921 * described in 802.11n D5.0 7.3.2.58
6b4e3241 922 */
d9fe60de 923struct ieee80211_ht_info {
6b4e3241
RR
924 u8 control_chan;
925 u8 ht_param;
926 __le16 operation_mode;
927 __le16 stbc_param;
928 u8 basic_set[16];
929} __attribute__ ((packed));
930
d9fe60de
JB
931/* for ht_param */
932#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
933#define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
934#define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
935#define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
936#define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
937#define IEEE80211_HT_PARAM_RIFS_MODE 0x08
938#define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
939#define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
940
941/* for operation_mode */
942#define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
943#define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
944#define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
945#define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
946#define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
947#define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
948#define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
949
950/* for stbc_param */
951#define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
952#define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
953#define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
954#define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
955#define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
956#define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
957
a9de8ce0 958
44d414db
JB
959/* block-ack parameters */
960#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
961#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
962#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
963#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
964#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
965
966/*
967 * A-PMDU buffer sizes
968 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
969 */
970#define IEEE80211_MIN_AMPDU_BUF 0x8
971#define IEEE80211_MAX_AMPDU_BUF 0x40
972
973
0f78231b 974/* Spatial Multiplexing Power Save Modes (for capability) */
00c5ae2f
TW
975#define WLAN_HT_CAP_SM_PS_STATIC 0
976#define WLAN_HT_CAP_SM_PS_DYNAMIC 1
977#define WLAN_HT_CAP_SM_PS_INVALID 2
978#define WLAN_HT_CAP_SM_PS_DISABLED 3
e53cfe0e 979
0f78231b
JB
980/* for SM power control field lower two bits */
981#define WLAN_HT_SMPS_CONTROL_DISABLED 0
982#define WLAN_HT_SMPS_CONTROL_STATIC 1
983#define WLAN_HT_SMPS_CONTROL_DYNAMIC 3
984
a9de8ce0
JB
985/* Authentication algorithms */
986#define WLAN_AUTH_OPEN 0
987#define WLAN_AUTH_SHARED_KEY 1
636a5d36 988#define WLAN_AUTH_FT 2
bb608e9d 989#define WLAN_AUTH_LEAP 128
a9de8ce0
JB
990
991#define WLAN_AUTH_CHALLENGE_LEN 128
992
993#define WLAN_CAPABILITY_ESS (1<<0)
994#define WLAN_CAPABILITY_IBSS (1<<1)
995#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
996#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
997#define WLAN_CAPABILITY_PRIVACY (1<<4)
998#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
999#define WLAN_CAPABILITY_PBCC (1<<6)
1000#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
b6623486 1001
a9de8ce0
JB
1002/* 802.11h */
1003#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
1004#define WLAN_CAPABILITY_QOS (1<<9)
1005#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1006#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
b6623486
AK
1007/* measurement */
1008#define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
1009#define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
1010#define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
1011
1012#define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
1013#define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
1014#define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
1015
a9de8ce0 1016
5628221c
DD
1017/* 802.11g ERP information element */
1018#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1019#define WLAN_ERP_USE_PROTECTION (1<<1)
1020#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1021
1022/* WLAN_ERP_BARKER_PREAMBLE values */
1023enum {
1024 WLAN_ERP_PREAMBLE_SHORT = 0,
1025 WLAN_ERP_PREAMBLE_LONG = 1,
1026};
1027
a9de8ce0
JB
1028/* Status codes */
1029enum ieee80211_statuscode {
1030 WLAN_STATUS_SUCCESS = 0,
1031 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1032 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1033 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1034 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1035 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1036 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1037 WLAN_STATUS_CHALLENGE_FAIL = 15,
1038 WLAN_STATUS_AUTH_TIMEOUT = 16,
1039 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1040 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1041 /* 802.11b */
1042 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1043 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1044 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1045 /* 802.11h */
1046 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1047 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1048 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1049 /* 802.11g */
1050 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1051 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
63a5ab82
JM
1052 /* 802.11w */
1053 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1054 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
a9de8ce0
JB
1055 /* 802.11i */
1056 WLAN_STATUS_INVALID_IE = 40,
1057 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1058 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1059 WLAN_STATUS_INVALID_AKMP = 43,
1060 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1061 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1062 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
6b4e3241
RR
1063 /* 802.11e */
1064 WLAN_STATUS_UNSPECIFIED_QOS = 32,
1065 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1066 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1067 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1068 WLAN_STATUS_REQUEST_DECLINED = 37,
1069 WLAN_STATUS_INVALID_QOS_PARAM = 38,
1070 WLAN_STATUS_CHANGE_TSPEC = 39,
1071 WLAN_STATUS_WAIT_TS_DELAY = 47,
1072 WLAN_STATUS_NO_DIRECT_LINK = 48,
1073 WLAN_STATUS_STA_NOT_PRESENT = 49,
1074 WLAN_STATUS_STA_NOT_QSTA = 50,
a9de8ce0
JB
1075};
1076
1077
1078/* Reason codes */
1079enum ieee80211_reasoncode {
1080 WLAN_REASON_UNSPECIFIED = 1,
1081 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1082 WLAN_REASON_DEAUTH_LEAVING = 3,
1083 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1084 WLAN_REASON_DISASSOC_AP_BUSY = 5,
1085 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1086 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1087 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1088 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1089 /* 802.11h */
1090 WLAN_REASON_DISASSOC_BAD_POWER = 10,
1091 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1092 /* 802.11i */
1093 WLAN_REASON_INVALID_IE = 13,
1094 WLAN_REASON_MIC_FAILURE = 14,
1095 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1096 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1097 WLAN_REASON_IE_DIFFERENT = 17,
1098 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1099 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1100 WLAN_REASON_INVALID_AKMP = 20,
1101 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1102 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1103 WLAN_REASON_IEEE8021X_FAILED = 23,
1104 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
6b4e3241
RR
1105 /* 802.11e */
1106 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1107 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1108 WLAN_REASON_DISASSOC_LOW_ACK = 34,
1109 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1110 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1111 WLAN_REASON_QSTA_NOT_USE = 37,
1112 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1113 WLAN_REASON_QSTA_TIMEOUT = 39,
1114 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
a9de8ce0
JB
1115};
1116
1117
1118/* Information Element IDs */
1119enum ieee80211_eid {
1120 WLAN_EID_SSID = 0,
1121 WLAN_EID_SUPP_RATES = 1,
1122 WLAN_EID_FH_PARAMS = 2,
1123 WLAN_EID_DS_PARAMS = 3,
1124 WLAN_EID_CF_PARAMS = 4,
1125 WLAN_EID_TIM = 5,
1126 WLAN_EID_IBSS_PARAMS = 6,
1127 WLAN_EID_CHALLENGE = 16,
8e664fb3 1128
a9de8ce0
JB
1129 WLAN_EID_COUNTRY = 7,
1130 WLAN_EID_HP_PARAMS = 8,
1131 WLAN_EID_HP_TABLE = 9,
1132 WLAN_EID_REQUEST = 10,
8e664fb3 1133
6b4e3241
RR
1134 WLAN_EID_QBSS_LOAD = 11,
1135 WLAN_EID_EDCA_PARAM_SET = 12,
1136 WLAN_EID_TSPEC = 13,
1137 WLAN_EID_TCLAS = 14,
1138 WLAN_EID_SCHEDULE = 15,
1139 WLAN_EID_TS_DELAY = 43,
1140 WLAN_EID_TCLAS_PROCESSING = 44,
1141 WLAN_EID_QOS_CAPA = 46,
d619ee08
LCC
1142 /* 802.11s
1143 *
1144 * All mesh EID numbers are pending IEEE 802.11 ANA approval.
1145 * The numbers have been incremented from those suggested in
1146 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
1147 * EXT_SUPP_RATES.
1148 */
1149 WLAN_EID_MESH_CONFIG = 51,
1150 WLAN_EID_MESH_ID = 52,
1151 WLAN_EID_PEER_LINK = 55,
1152 WLAN_EID_PREQ = 68,
1153 WLAN_EID_PREP = 69,
1154 WLAN_EID_PERR = 70,
90a5e169 1155 WLAN_EID_RANN = 49, /* compatible with FreeBSD */
8e664fb3 1156
a9de8ce0
JB
1157 WLAN_EID_PWR_CONSTRAINT = 32,
1158 WLAN_EID_PWR_CAPABILITY = 33,
1159 WLAN_EID_TPC_REQUEST = 34,
1160 WLAN_EID_TPC_REPORT = 35,
1161 WLAN_EID_SUPPORTED_CHANNELS = 36,
1162 WLAN_EID_CHANNEL_SWITCH = 37,
1163 WLAN_EID_MEASURE_REQUEST = 38,
1164 WLAN_EID_MEASURE_REPORT = 39,
1165 WLAN_EID_QUIET = 40,
1166 WLAN_EID_IBSS_DFS = 41,
8e664fb3 1167
a9de8ce0
JB
1168 WLAN_EID_ERP_INFO = 42,
1169 WLAN_EID_EXT_SUPP_RATES = 50,
8e664fb3 1170
6b4e3241 1171 WLAN_EID_HT_CAPABILITY = 45,
d9fe60de 1172 WLAN_EID_HT_INFORMATION = 61,
8e664fb3 1173
a9de8ce0 1174 WLAN_EID_RSN = 48,
8e664fb3 1175 WLAN_EID_MMIE = 76,
a9de8ce0
JB
1176 WLAN_EID_WPA = 221,
1177 WLAN_EID_GENERIC = 221,
1178 WLAN_EID_VENDOR_SPECIFIC = 221,
8e664fb3
JB
1179 WLAN_EID_QOS_PARAMETER = 222,
1180
1181 WLAN_EID_AP_CHAN_REPORT = 51,
1182 WLAN_EID_NEIGHBOR_REPORT = 52,
1183 WLAN_EID_RCPI = 53,
1184 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1185 WLAN_EID_ANTENNA_INFO = 64,
1186 WLAN_EID_RSNI = 65,
1187 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1188 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1189 WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1190 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1191 WLAN_EID_MULTIPLE_BSSID = 71,
1192
1193 WLAN_EID_MOBILITY_DOMAIN = 54,
1194 WLAN_EID_FAST_BSS_TRANSITION = 55,
1195 WLAN_EID_TIMEOUT_INTERVAL = 56,
1196 WLAN_EID_RIC_DATA = 57,
1197 WLAN_EID_RIC_DESCRIPTOR = 75,
1198
1199 WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1200 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1201 WLAN_EID_EXT_CHANSWITCH_ANN = 60,
a9de8ce0
JB
1202};
1203
6b4e3241
RR
1204/* Action category code */
1205enum ieee80211_category {
1206 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1207 WLAN_CATEGORY_QOS = 1,
1208 WLAN_CATEGORY_DLS = 2,
1209 WLAN_CATEGORY_BACK = 3,
fb733336 1210 WLAN_CATEGORY_PUBLIC = 4,
528769cf 1211 WLAN_CATEGORY_HT = 7,
fea14732 1212 WLAN_CATEGORY_SA_QUERY = 8,
528769cf 1213 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
6b4e3241 1214 WLAN_CATEGORY_WMM = 17,
97ad9139
JC
1215 WLAN_CATEGORY_MESH_PLINK = 30, /* Pending ANA approval */
1216 WLAN_CATEGORY_MESH_PATH_SEL = 32, /* Pending ANA approval */
528769cf
JM
1217 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1218 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
6b4e3241
RR
1219};
1220
f2df3859
AK
1221/* SPECTRUM_MGMT action code */
1222enum ieee80211_spectrum_mgmt_actioncode {
1223 WLAN_ACTION_SPCT_MSR_REQ = 0,
1224 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1225 WLAN_ACTION_SPCT_TPC_REQ = 2,
1226 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1227 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1228};
1229
0f78231b
JB
1230/* HT action codes */
1231enum ieee80211_ht_actioncode {
1232 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1233 WLAN_HT_ACTION_SMPS = 1,
1234 WLAN_HT_ACTION_PSMP = 2,
1235 WLAN_HT_ACTION_PCO_PHASE = 3,
1236 WLAN_HT_ACTION_CSI = 4,
1237 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1238 WLAN_HT_ACTION_COMPRESSED_BF = 6,
1239 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1240};
1241
e31a16d6
ZY
1242/* Security key length */
1243enum ieee80211_key_len {
1244 WLAN_KEY_LEN_WEP40 = 5,
1245 WLAN_KEY_LEN_WEP104 = 13,
1246 WLAN_KEY_LEN_CCMP = 16,
1247 WLAN_KEY_LEN_TKIP = 32,
8fc0fee0 1248 WLAN_KEY_LEN_AES_CMAC = 16,
e31a16d6
ZY
1249};
1250
3f2355cb
LR
1251/*
1252 * IEEE 802.11-2007 7.3.2.9 Country information element
1253 *
1254 * Minimum length is 8 octets, ie len must be evenly
1255 * divisible by 2
1256 */
1257
1258/* Although the spec says 8 I'm seeing 6 in practice */
1259#define IEEE80211_COUNTRY_IE_MIN_LEN 6
1260
1261/*
1262 * For regulatory extension stuff see IEEE 802.11-2007
1263 * Annex I (page 1141) and Annex J (page 1147). Also
1264 * review 7.3.2.9.
1265 *
1266 * When dot11RegulatoryClassesRequired is true and the
1267 * first_channel/reg_extension_id is >= 201 then the IE
1268 * compromises of the 'ext' struct represented below:
1269 *
1270 * - Regulatory extension ID - when generating IE this just needs
1271 * to be monotonically increasing for each triplet passed in
1272 * the IE
1273 * - Regulatory class - index into set of rules
1274 * - Coverage class - index into air propagation time (Table 7-27),
1275 * in microseconds, you can compute the air propagation time from
1276 * the index by multiplying by 3, so index 10 yields a propagation
1277 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1278 * yet. A value of 0 inicates air propagation of <= 1 us.
1279 *
1280 * See also Table I.2 for Emission limit sets and table
1281 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1282 * a reg_class to an emission limit set and behavior limit set.
1283 */
1284#define IEEE80211_COUNTRY_EXTENSION_ID 201
1285
1286/*
1287 * Channels numbers in the IE must be monotonically increasing
1288 * if dot11RegulatoryClassesRequired is not true.
1289 *
1290 * If dot11RegulatoryClassesRequired is true consecutive
1291 * subband triplets following a regulatory triplet shall
1292 * have monotonically increasing first_channel number fields.
1293 *
1294 * Channel numbers shall not overlap.
1295 *
1296 * Note that max_power is signed.
1297 */
1298struct ieee80211_country_ie_triplet {
1299 union {
1300 struct {
1301 u8 first_channel;
1302 u8 num_channels;
1303 s8 max_power;
1304 } __attribute__ ((packed)) chans;
1305 struct {
1306 u8 reg_extension_id;
1307 u8 reg_class;
1308 u8 coverage_class;
1309 } __attribute__ ((packed)) ext;
1310 };
1311} __attribute__ ((packed));
1312
f797eb7e
JM
1313enum ieee80211_timeout_interval_type {
1314 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1315 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1316 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1317};
1318
6b4e3241
RR
1319/* BACK action code */
1320enum ieee80211_back_actioncode {
1321 WLAN_ACTION_ADDBA_REQ = 0,
1322 WLAN_ACTION_ADDBA_RESP = 1,
1323 WLAN_ACTION_DELBA = 2,
1324};
1325
07db2183
RR
1326/* BACK (block-ack) parties */
1327enum ieee80211_back_parties {
1328 WLAN_BACK_RECIPIENT = 0,
1329 WLAN_BACK_INITIATOR = 1,
07db2183
RR
1330};
1331
fea14732
JM
1332/* SA Query action */
1333enum ieee80211_sa_query_action {
1334 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1335 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1336};
1337
1338
6b4e3241
RR
1339/* A-MSDU 802.11n */
1340#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1341
a9de8ce0
JB
1342/* cipher suite selectors */
1343#define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1344#define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1345#define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1346/* reserved: 0x000FAC03 */
1347#define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1348#define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
3cfcf6ac 1349#define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
a9de8ce0 1350
6a669e65
JB
1351/* AKM suite selectors */
1352#define WLAN_AKM_SUITE_8021X 0x000FAC01
1353#define WLAN_AKM_SUITE_PSK 0x000FAC02
1354
a9de8ce0
JB
1355#define WLAN_MAX_KEY_LEN 32
1356
67fbb16b
SO
1357#define WLAN_PMKID_LEN 16
1358
fd7c8a40
HH
1359/**
1360 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1361 * @hdr: the frame
1362 *
1363 * The qos ctrl bytes come after the frame_control, duration, seq_num
1364 * and 3 or 4 addresses of length ETH_ALEN.
1365 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1366 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1367 */
1368static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1369{
1370 if (ieee80211_has_a4(hdr->frame_control))
1371 return (u8 *)hdr + 30;
1372 else
1373 return (u8 *)hdr + 24;
1374}
1375
f97df02e
JB
1376/**
1377 * ieee80211_get_SA - get pointer to SA
fd7c8a40 1378 * @hdr: the frame
f97df02e
JB
1379 *
1380 * Given an 802.11 frame, this function returns the offset
1381 * to the source address (SA). It does not verify that the
1382 * header is long enough to contain the address, and the
1383 * header must be long enough to contain the frame control
1384 * field.
f97df02e
JB
1385 */
1386static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1387{
fd7c8a40 1388 if (ieee80211_has_a4(hdr->frame_control))
5a433b3a 1389 return hdr->addr4;
fd7c8a40
HH
1390 if (ieee80211_has_fromds(hdr->frame_control))
1391 return hdr->addr3;
1392 return hdr->addr2;
f97df02e
JB
1393}
1394
1395/**
1396 * ieee80211_get_DA - get pointer to DA
fd7c8a40 1397 * @hdr: the frame
f97df02e
JB
1398 *
1399 * Given an 802.11 frame, this function returns the offset
1400 * to the destination address (DA). It does not verify that
1401 * the header is long enough to contain the address, and the
1402 * header must be long enough to contain the frame control
1403 * field.
f97df02e
JB
1404 */
1405static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1406{
fd7c8a40 1407 if (ieee80211_has_tods(hdr->frame_control))
f97df02e 1408 return hdr->addr3;
5a433b3a
HH
1409 else
1410 return hdr->addr1;
f97df02e
JB
1411}
1412
fb733336
JM
1413/**
1414 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1415 * @hdr: the frame (buffer must include at least the first octet of payload)
1416 */
1417static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1418{
1419 if (ieee80211_is_disassoc(hdr->frame_control) ||
1420 ieee80211_is_deauth(hdr->frame_control))
1421 return true;
1422
1423 if (ieee80211_is_action(hdr->frame_control)) {
1424 u8 *category;
1425
1426 /*
1427 * Action frames, excluding Public Action frames, are Robust
1428 * Management Frames. However, if we are looking at a Protected
1429 * frame, skip the check since the data may be encrypted and
1430 * the frame has already been found to be a Robust Management
1431 * Frame (by the other end).
1432 */
1433 if (ieee80211_has_protected(hdr->frame_control))
1434 return true;
1435 category = ((u8 *) hdr) + 24;
528769cf
JM
1436 return *category != WLAN_CATEGORY_PUBLIC &&
1437 *category != WLAN_CATEGORY_HT &&
1438 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
fb733336
JM
1439 }
1440
1441 return false;
1442}
1443
9ee677c2
DK
1444/**
1445 * ieee80211_fhss_chan_to_freq - get channel frequency
1446 * @channel: the FHSS channel
1447 *
1448 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1449 * Ref IEEE 802.11-2007 section 14.6
1450 */
1451static inline int ieee80211_fhss_chan_to_freq(int channel)
1452{
1453 if ((channel > 1) && (channel < 96))
1454 return channel + 2400;
1455 else
1456 return -1;
1457}
1458
1459/**
1460 * ieee80211_freq_to_fhss_chan - get channel
1461 * @freq: the channels frequency
1462 *
1463 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1464 * Ref IEEE 802.11-2007 section 14.6
1465 */
1466static inline int ieee80211_freq_to_fhss_chan(int freq)
1467{
1468 if ((freq > 2401) && (freq < 2496))
1469 return freq - 2400;
1470 else
1471 return -1;
1472}
1473
1474/**
1475 * ieee80211_dsss_chan_to_freq - get channel center frequency
1476 * @channel: the DSSS channel
1477 *
1478 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1479 * Ref IEEE 802.11-2007 section 15.6
1480 */
1481static inline int ieee80211_dsss_chan_to_freq(int channel)
1482{
1483 if ((channel > 0) && (channel < 14))
1484 return 2407 + (channel * 5);
1485 else if (channel == 14)
1486 return 2484;
1487 else
1488 return -1;
1489}
1490
1491/**
1492 * ieee80211_freq_to_dsss_chan - get channel
1493 * @freq: the frequency
1494 *
1495 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1496 * Ref IEEE 802.11-2007 section 15.6
1497 *
1498 * This routine selects the channel with the closest center frequency.
1499 */
1500static inline int ieee80211_freq_to_dsss_chan(int freq)
1501{
1502 if ((freq >= 2410) && (freq < 2475))
1503 return (freq - 2405) / 5;
1504 else if ((freq >= 2482) && (freq < 2487))
1505 return 14;
1506 else
1507 return -1;
1508}
1509
1510/* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1511 * Ref IEEE 802.11-2007 section 18.4.6.2
1512 *
1513 * The channels and frequencies are the same as those defined for DSSS
1514 */
1515#define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1516#define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1517
1518/* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1519 * Ref IEEE 802.11-2007 section 19.4.2
1520 */
1521#define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1522#define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1523
1524/**
1525 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1526 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1527 * @channel: the OFDM channel
1528 *
1529 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1530 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1531 */
1532static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1533{
1534 if ((channel > 0) && (channel <= 200) &&
1535 (s_freq >= 4000))
1536 return s_freq + (channel * 5);
1537 else
1538 return -1;
1539}
1540
1541/**
1542 * ieee80211_freq_to_ofdm_channel - get channel
1543 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1544 * @freq: the frequency
1545 *
1546 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1547 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1548 *
1549 * This routine selects the channel with the closest center frequency.
1550 */
1551static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1552{
1553 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1554 (s_freq >= 4000))
1555 return (freq + 2 - s_freq) / 5;
1556 else
1557 return -1;
1558}
1559
10f644a4
JB
1560/**
1561 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1562 * @tu: the TUs
1563 */
1564static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1565{
1566 return 1024 * tu;
1567}
1568
e7ec86f5
JB
1569/**
1570 * ieee80211_check_tim - check if AID bit is set in TIM
1571 * @tim: the TIM IE
1572 * @tim_len: length of the TIM IE
1573 * @aid: the AID to look for
1574 */
1575static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1576 u8 tim_len, u16 aid)
1577{
1578 u8 mask;
1579 u8 index, indexn1, indexn2;
1580
1581 if (unlikely(!tim || tim_len < sizeof(*tim)))
1582 return false;
1583
1584 aid &= 0x3fff;
1585 index = aid / 8;
1586 mask = 1 << (aid & 7);
1587
1588 indexn1 = tim->bitmap_ctrl & 0xfe;
1589 indexn2 = tim_len + indexn1 - 4;
1590
1591 if (index < indexn1 || index > indexn2)
1592 return false;
1593
1594 index -= indexn1;
1595
1596 return !!(tim->virtual_map[index] & mask);
1597}
1598
9387b7ca 1599#endif /* LINUX_IEEE80211_H */