tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
15#ifndef LINUX_IEEE80211_H
16#define LINUX_IEEE80211_H
17
18#include <linux/types.h>
19#include <asm/byteorder.h>
20
21#define FCS_LEN 4
22
23#define IEEE80211_FCTL_VERS 0x0003
24#define IEEE80211_FCTL_FTYPE 0x000c
25#define IEEE80211_FCTL_STYPE 0x00f0
26#define IEEE80211_FCTL_TODS 0x0100
27#define IEEE80211_FCTL_FROMDS 0x0200
28#define IEEE80211_FCTL_MOREFRAGS 0x0400
29#define IEEE80211_FCTL_RETRY 0x0800
30#define IEEE80211_FCTL_PM 0x1000
31#define IEEE80211_FCTL_MOREDATA 0x2000
32#define IEEE80211_FCTL_PROTECTED 0x4000
33#define IEEE80211_FCTL_ORDER 0x8000
34
35#define IEEE80211_SCTL_FRAG 0x000F
36#define IEEE80211_SCTL_SEQ 0xFFF0
37
38#define IEEE80211_FTYPE_MGMT 0x0000
39#define IEEE80211_FTYPE_CTL 0x0004
40#define IEEE80211_FTYPE_DATA 0x0008
41
42/* management */
43#define IEEE80211_STYPE_ASSOC_REQ 0x0000
44#define IEEE80211_STYPE_ASSOC_RESP 0x0010
45#define IEEE80211_STYPE_REASSOC_REQ 0x0020
46#define IEEE80211_STYPE_REASSOC_RESP 0x0030
47#define IEEE80211_STYPE_PROBE_REQ 0x0040
48#define IEEE80211_STYPE_PROBE_RESP 0x0050
49#define IEEE80211_STYPE_BEACON 0x0080
50#define IEEE80211_STYPE_ATIM 0x0090
51#define IEEE80211_STYPE_DISASSOC 0x00A0
52#define IEEE80211_STYPE_AUTH 0x00B0
53#define IEEE80211_STYPE_DEAUTH 0x00C0
54#define IEEE80211_STYPE_ACTION 0x00D0
55
56/* control */
57#define IEEE80211_STYPE_BACK_REQ 0x0080
58#define IEEE80211_STYPE_BACK 0x0090
59#define IEEE80211_STYPE_PSPOLL 0x00A0
60#define IEEE80211_STYPE_RTS 0x00B0
61#define IEEE80211_STYPE_CTS 0x00C0
62#define IEEE80211_STYPE_ACK 0x00D0
63#define IEEE80211_STYPE_CFEND 0x00E0
64#define IEEE80211_STYPE_CFENDACK 0x00F0
65
66/* data */
67#define IEEE80211_STYPE_DATA 0x0000
68#define IEEE80211_STYPE_DATA_CFACK 0x0010
69#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
70#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
71#define IEEE80211_STYPE_NULLFUNC 0x0040
72#define IEEE80211_STYPE_CFACK 0x0050
73#define IEEE80211_STYPE_CFPOLL 0x0060
74#define IEEE80211_STYPE_CFACKPOLL 0x0070
75#define IEEE80211_STYPE_QOS_DATA 0x0080
76#define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090
77#define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0
78#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0
79#define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0
80#define IEEE80211_STYPE_QOS_CFACK 0x00D0
81#define IEEE80211_STYPE_QOS_CFPOLL 0x00E0
82#define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0
83
84
85/* miscellaneous IEEE 802.11 constants */
86#define IEEE80211_MAX_FRAG_THRESHOLD 2352
87#define IEEE80211_MAX_RTS_THRESHOLD 2353
88#define IEEE80211_MAX_AID 2007
89#define IEEE80211_MAX_TIM_LEN 251
90/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
91 6.2.1.1.2.
92
93 802.11e clarifies the figure in section 7.1.2. The frame body is
94 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
95#define IEEE80211_MAX_DATA_LEN 2304
96/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
97#define IEEE80211_MAX_FRAME_LEN 2352
98
99#define IEEE80211_MAX_SSID_LEN 32
100
101#define IEEE80211_MAX_MESH_ID_LEN 32
102#define IEEE80211_MESH_CONFIG_LEN 19
103
104#define IEEE80211_QOS_CTL_LEN 2
105#define IEEE80211_QOS_CTL_TID_MASK 0x000F
106#define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
107
108struct ieee80211_hdr {
109 __le16 frame_control;
110 __le16 duration_id;
111 u8 addr1[6];
112 u8 addr2[6];
113 u8 addr3[6];
114 __le16 seq_ctrl;
115 u8 addr4[6];
116} __attribute__ ((packed));
117
118/**
119 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
120 * @fc: frame control bytes in little-endian byteorder
121 */
122static inline int ieee80211_has_tods(__le16 fc)
123{
124 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
125}
126
127/**
128 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
129 * @fc: frame control bytes in little-endian byteorder
130 */
131static inline int ieee80211_has_fromds(__le16 fc)
132{
133 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
134}
135
136/**
137 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
138 * @fc: frame control bytes in little-endian byteorder
139 */
140static inline int ieee80211_has_a4(__le16 fc)
141{
142 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
143 return (fc & tmp) == tmp;
144}
145
146/**
147 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
148 * @fc: frame control bytes in little-endian byteorder
149 */
150static inline int ieee80211_has_morefrags(__le16 fc)
151{
152 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
153}
154
155/**
156 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
157 * @fc: frame control bytes in little-endian byteorder
158 */
159static inline int ieee80211_has_retry(__le16 fc)
160{
161 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
162}
163
164/**
165 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
166 * @fc: frame control bytes in little-endian byteorder
167 */
168static inline int ieee80211_has_pm(__le16 fc)
169{
170 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
171}
172
173/**
174 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
175 * @fc: frame control bytes in little-endian byteorder
176 */
177static inline int ieee80211_has_moredata(__le16 fc)
178{
179 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
180}
181
182/**
183 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
184 * @fc: frame control bytes in little-endian byteorder
185 */
186static inline int ieee80211_has_protected(__le16 fc)
187{
188 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
189}
190
191/**
192 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
193 * @fc: frame control bytes in little-endian byteorder
194 */
195static inline int ieee80211_has_order(__le16 fc)
196{
197 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
198}
199
200/**
201 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
202 * @fc: frame control bytes in little-endian byteorder
203 */
204static inline int ieee80211_is_mgmt(__le16 fc)
205{
206 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
207 cpu_to_le16(IEEE80211_FTYPE_MGMT);
208}
209
210/**
211 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
212 * @fc: frame control bytes in little-endian byteorder
213 */
214static inline int ieee80211_is_ctl(__le16 fc)
215{
216 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
217 cpu_to_le16(IEEE80211_FTYPE_CTL);
218}
219
220/**
221 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
222 * @fc: frame control bytes in little-endian byteorder
223 */
224static inline int ieee80211_is_data(__le16 fc)
225{
226 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
227 cpu_to_le16(IEEE80211_FTYPE_DATA);
228}
229
230/**
231 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
232 * @fc: frame control bytes in little-endian byteorder
233 */
234static inline int ieee80211_is_data_qos(__le16 fc)
235{
236 /*
237 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
238 * to check the one bit
239 */
240 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
241 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
242}
243
244/**
245 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
246 * @fc: frame control bytes in little-endian byteorder
247 */
248static inline int ieee80211_is_data_present(__le16 fc)
249{
250 /*
251 * mask with 0x40 and test that that bit is clear to only return true
252 * for the data-containing substypes.
253 */
254 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
255 cpu_to_le16(IEEE80211_FTYPE_DATA);
256}
257
258/**
259 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
260 * @fc: frame control bytes in little-endian byteorder
261 */
262static inline int ieee80211_is_assoc_req(__le16 fc)
263{
264 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
265 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
266}
267
268/**
269 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
270 * @fc: frame control bytes in little-endian byteorder
271 */
272static inline int ieee80211_is_assoc_resp(__le16 fc)
273{
274 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
275 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
276}
277
278/**
279 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
280 * @fc: frame control bytes in little-endian byteorder
281 */
282static inline int ieee80211_is_reassoc_req(__le16 fc)
283{
284 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
285 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
286}
287
288/**
289 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
290 * @fc: frame control bytes in little-endian byteorder
291 */
292static inline int ieee80211_is_reassoc_resp(__le16 fc)
293{
294 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
295 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
296}
297
298/**
299 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
300 * @fc: frame control bytes in little-endian byteorder
301 */
302static inline int ieee80211_is_probe_req(__le16 fc)
303{
304 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
305 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
306}
307
308/**
309 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
310 * @fc: frame control bytes in little-endian byteorder
311 */
312static inline int ieee80211_is_probe_resp(__le16 fc)
313{
314 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
315 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
316}
317
318/**
319 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
320 * @fc: frame control bytes in little-endian byteorder
321 */
322static inline int ieee80211_is_beacon(__le16 fc)
323{
324 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
325 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
326}
327
328/**
329 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
330 * @fc: frame control bytes in little-endian byteorder
331 */
332static inline int ieee80211_is_atim(__le16 fc)
333{
334 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
335 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
336}
337
338/**
339 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
340 * @fc: frame control bytes in little-endian byteorder
341 */
342static inline int ieee80211_is_disassoc(__le16 fc)
343{
344 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
345 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
346}
347
348/**
349 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
350 * @fc: frame control bytes in little-endian byteorder
351 */
352static inline int ieee80211_is_auth(__le16 fc)
353{
354 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
355 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
356}
357
358/**
359 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
360 * @fc: frame control bytes in little-endian byteorder
361 */
362static inline int ieee80211_is_deauth(__le16 fc)
363{
364 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
365 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
366}
367
368/**
369 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
370 * @fc: frame control bytes in little-endian byteorder
371 */
372static inline int ieee80211_is_action(__le16 fc)
373{
374 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
375 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
376}
377
378/**
379 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
380 * @fc: frame control bytes in little-endian byteorder
381 */
382static inline int ieee80211_is_back_req(__le16 fc)
383{
384 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
385 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
386}
387
388/**
389 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
390 * @fc: frame control bytes in little-endian byteorder
391 */
392static inline int ieee80211_is_back(__le16 fc)
393{
394 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
395 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
396}
397
398/**
399 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
400 * @fc: frame control bytes in little-endian byteorder
401 */
402static inline int ieee80211_is_pspoll(__le16 fc)
403{
404 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
405 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
406}
407
408/**
409 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
410 * @fc: frame control bytes in little-endian byteorder
411 */
412static inline int ieee80211_is_rts(__le16 fc)
413{
414 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
415 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
416}
417
418/**
419 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
420 * @fc: frame control bytes in little-endian byteorder
421 */
422static inline int ieee80211_is_cts(__le16 fc)
423{
424 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
425 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
426}
427
428/**
429 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
430 * @fc: frame control bytes in little-endian byteorder
431 */
432static inline int ieee80211_is_ack(__le16 fc)
433{
434 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
435 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
436}
437
438/**
439 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
440 * @fc: frame control bytes in little-endian byteorder
441 */
442static inline int ieee80211_is_cfend(__le16 fc)
443{
444 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
445 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
446}
447
448/**
449 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
450 * @fc: frame control bytes in little-endian byteorder
451 */
452static inline int ieee80211_is_cfendack(__le16 fc)
453{
454 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
455 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
456}
457
458/**
459 * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC
460 * @fc: frame control bytes in little-endian byteorder
461 */
462static inline int ieee80211_is_nullfunc(__le16 fc)
463{
464 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
465 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
466}
467
468struct ieee80211s_hdr {
469 u8 flags;
470 u8 ttl;
471 __le32 seqnum;
472 u8 eaddr1[6];
473 u8 eaddr2[6];
474 u8 eaddr3[6];
475} __attribute__ ((packed));
476
477/* Mesh flags */
478#define MESH_FLAGS_AE_A4 0x1
479#define MESH_FLAGS_AE_A5_A6 0x2
480#define MESH_FLAGS_PS_DEEP 0x4
481
482/**
483 * struct ieee80211_quiet_ie
484 *
485 * This structure refers to "Quiet information element"
486 */
487struct ieee80211_quiet_ie {
488 u8 count;
489 u8 period;
490 __le16 duration;
491 __le16 offset;
492} __attribute__ ((packed));
493
494/**
495 * struct ieee80211_msrment_ie
496 *
497 * This structure refers to "Measurement Request/Report information element"
498 */
499struct ieee80211_msrment_ie {
500 u8 token;
501 u8 mode;
502 u8 type;
503 u8 request[0];
504} __attribute__ ((packed));
505
506/**
507 * struct ieee80211_channel_sw_ie
508 *
509 * This structure refers to "Channel Switch Announcement information element"
510 */
511struct ieee80211_channel_sw_ie {
512 u8 mode;
513 u8 new_ch_num;
514 u8 count;
515} __attribute__ ((packed));
516
517/**
518 * struct ieee80211_tim
519 *
520 * This structure refers to "Traffic Indication Map information element"
521 */
522struct ieee80211_tim_ie {
523 u8 dtim_count;
524 u8 dtim_period;
525 u8 bitmap_ctrl;
526 /* variable size: 1 - 251 bytes */
527 u8 virtual_map[0];
528} __attribute__ ((packed));
529
530struct ieee80211_mgmt {
531 __le16 frame_control;
532 __le16 duration;
533 u8 da[6];
534 u8 sa[6];
535 u8 bssid[6];
536 __le16 seq_ctrl;
537 union {
538 struct {
539 __le16 auth_alg;
540 __le16 auth_transaction;
541 __le16 status_code;
542 /* possibly followed by Challenge text */
543 u8 variable[0];
544 } __attribute__ ((packed)) auth;
545 struct {
546 __le16 reason_code;
547 } __attribute__ ((packed)) deauth;
548 struct {
549 __le16 capab_info;
550 __le16 listen_interval;
551 /* followed by SSID and Supported rates */
552 u8 variable[0];
553 } __attribute__ ((packed)) assoc_req;
554 struct {
555 __le16 capab_info;
556 __le16 status_code;
557 __le16 aid;
558 /* followed by Supported rates */
559 u8 variable[0];
560 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
561 struct {
562 __le16 capab_info;
563 __le16 listen_interval;
564 u8 current_ap[6];
565 /* followed by SSID and Supported rates */
566 u8 variable[0];
567 } __attribute__ ((packed)) reassoc_req;
568 struct {
569 __le16 reason_code;
570 } __attribute__ ((packed)) disassoc;
571 struct {
572 __le64 timestamp;
573 __le16 beacon_int;
574 __le16 capab_info;
575 /* followed by some of SSID, Supported rates,
576 * FH Params, DS Params, CF Params, IBSS Params, TIM */
577 u8 variable[0];
578 } __attribute__ ((packed)) beacon;
579 struct {
580 /* only variable items: SSID, Supported rates */
581 u8 variable[0];
582 } __attribute__ ((packed)) probe_req;
583 struct {
584 __le64 timestamp;
585 __le16 beacon_int;
586 __le16 capab_info;
587 /* followed by some of SSID, Supported rates,
588 * FH Params, DS Params, CF Params, IBSS Params */
589 u8 variable[0];
590 } __attribute__ ((packed)) probe_resp;
591 struct {
592 u8 category;
593 union {
594 struct {
595 u8 action_code;
596 u8 dialog_token;
597 u8 status_code;
598 u8 variable[0];
599 } __attribute__ ((packed)) wme_action;
600 struct{
601 u8 action_code;
602 u8 element_id;
603 u8 length;
604 struct ieee80211_channel_sw_ie sw_elem;
605 } __attribute__((packed)) chan_switch;
606 struct{
607 u8 action_code;
608 u8 dialog_token;
609 u8 element_id;
610 u8 length;
611 struct ieee80211_msrment_ie msr_elem;
612 } __attribute__((packed)) measurement;
613 struct{
614 u8 action_code;
615 u8 dialog_token;
616 __le16 capab;
617 __le16 timeout;
618 __le16 start_seq_num;
619 } __attribute__((packed)) addba_req;
620 struct{
621 u8 action_code;
622 u8 dialog_token;
623 __le16 status;
624 __le16 capab;
625 __le16 timeout;
626 } __attribute__((packed)) addba_resp;
627 struct{
628 u8 action_code;
629 __le16 params;
630 __le16 reason_code;
631 } __attribute__((packed)) delba;
632 struct{
633 u8 action_code;
634 /* capab_info for open and confirm,
635 * reason for close
636 */
637 __le16 aux;
638 /* Followed in plink_confirm by status
639 * code, AID and supported rates,
640 * and directly by supported rates in
641 * plink_open and plink_close
642 */
643 u8 variable[0];
644 } __attribute__((packed)) plink_action;
645 struct{
646 u8 action_code;
647 u8 variable[0];
648 } __attribute__((packed)) mesh_action;
649 } u;
650 } __attribute__ ((packed)) action;
651 } u;
652} __attribute__ ((packed));
653
654/* mgmt header + 1 byte category code */
655#define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
656
657
658/* Control frames */
659struct ieee80211_rts {
660 __le16 frame_control;
661 __le16 duration;
662 u8 ra[6];
663 u8 ta[6];
664} __attribute__ ((packed));
665
666struct ieee80211_cts {
667 __le16 frame_control;
668 __le16 duration;
669 u8 ra[6];
670} __attribute__ ((packed));
671
672struct ieee80211_pspoll {
673 __le16 frame_control;
674 __le16 aid;
675 u8 bssid[6];
676 u8 ta[6];
677} __attribute__ ((packed));
678
679/**
680 * struct ieee80211_bar - HT Block Ack Request
681 *
682 * This structure refers to "HT BlockAckReq" as
683 * described in 802.11n draft section 7.2.1.7.1
684 */
685struct ieee80211_bar {
686 __le16 frame_control;
687 __le16 duration;
688 __u8 ra[6];
689 __u8 ta[6];
690 __le16 control;
691 __le16 start_seq_num;
692} __attribute__((packed));
693
694/* 802.11 BAR control masks */
695#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
696#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
697
698
699#define IEEE80211_HT_MCS_MASK_LEN 10
700
701/**
702 * struct ieee80211_mcs_info - MCS information
703 * @rx_mask: RX mask
704 * @rx_highest: highest supported RX rate
705 * @tx_params: TX parameters
706 */
707struct ieee80211_mcs_info {
708 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
709 __le16 rx_highest;
710 u8 tx_params;
711 u8 reserved[3];
712} __attribute__((packed));
713
714/* 802.11n HT capability MSC set */
715#define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
716#define IEEE80211_HT_MCS_TX_DEFINED 0x01
717#define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
718/* value 0 == 1 stream etc */
719#define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
720#define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
721#define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
722#define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
723
724/*
725 * 802.11n D5.0 20.3.5 / 20.6 says:
726 * - indices 0 to 7 and 32 are single spatial stream
727 * - 8 to 31 are multiple spatial streams using equal modulation
728 * [8..15 for two streams, 16..23 for three and 24..31 for four]
729 * - remainder are multiple spatial streams using unequal modulation
730 */
731#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
732#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
733 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
734
735/**
736 * struct ieee80211_ht_cap - HT capabilities
737 *
738 * This structure is the "HT capabilities element" as
739 * described in 802.11n D5.0 7.3.2.57
740 */
741struct ieee80211_ht_cap {
742 __le16 cap_info;
743 u8 ampdu_params_info;
744
745 /* 16 bytes MCS information */
746 struct ieee80211_mcs_info mcs;
747
748 __le16 extended_ht_cap_info;
749 __le32 tx_BF_cap_info;
750 u8 antenna_selection_info;
751} __attribute__ ((packed));
752
753/* 802.11n HT capabilities masks (for cap_info) */
754#define IEEE80211_HT_CAP_LDPC_CODING 0x0001
755#define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
756#define IEEE80211_HT_CAP_SM_PS 0x000C
757#define IEEE80211_HT_CAP_GRN_FLD 0x0010
758#define IEEE80211_HT_CAP_SGI_20 0x0020
759#define IEEE80211_HT_CAP_SGI_40 0x0040
760#define IEEE80211_HT_CAP_TX_STBC 0x0080
761#define IEEE80211_HT_CAP_RX_STBC 0x0300
762#define IEEE80211_HT_CAP_DELAY_BA 0x0400
763#define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
764#define IEEE80211_HT_CAP_DSSSCCK40 0x1000
765#define IEEE80211_HT_CAP_PSMP_SUPPORT 0x2000
766#define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
767#define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
768
769/* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
770#define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
771#define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
772
773/**
774 * struct ieee80211_ht_info - HT information
775 *
776 * This structure is the "HT information element" as
777 * described in 802.11n D5.0 7.3.2.58
778 */
779struct ieee80211_ht_info {
780 u8 control_chan;
781 u8 ht_param;
782 __le16 operation_mode;
783 __le16 stbc_param;
784 u8 basic_set[16];
785} __attribute__ ((packed));
786
787/* for ht_param */
788#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
789#define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
790#define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
791#define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
792#define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
793#define IEEE80211_HT_PARAM_RIFS_MODE 0x08
794#define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
795#define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
796
797/* for operation_mode */
798#define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
799#define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
800#define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
801#define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
802#define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
803#define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
804#define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
805
806/* for stbc_param */
807#define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
808#define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
809#define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
810#define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
811#define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
812#define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
813
814
815/* block-ack parameters */
816#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
817#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
818#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
819#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
820#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
821
822/*
823 * A-PMDU buffer sizes
824 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
825 */
826#define IEEE80211_MIN_AMPDU_BUF 0x8
827#define IEEE80211_MAX_AMPDU_BUF 0x40
828
829
830/* Spatial Multiplexing Power Save Modes */
831#define WLAN_HT_CAP_SM_PS_STATIC 0
832#define WLAN_HT_CAP_SM_PS_DYNAMIC 1
833#define WLAN_HT_CAP_SM_PS_INVALID 2
834#define WLAN_HT_CAP_SM_PS_DISABLED 3
835
836/* Authentication algorithms */
837#define WLAN_AUTH_OPEN 0
838#define WLAN_AUTH_SHARED_KEY 1
839#define WLAN_AUTH_LEAP 128
840
841#define WLAN_AUTH_CHALLENGE_LEN 128
842
843#define WLAN_CAPABILITY_ESS (1<<0)
844#define WLAN_CAPABILITY_IBSS (1<<1)
845#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
846#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
847#define WLAN_CAPABILITY_PRIVACY (1<<4)
848#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
849#define WLAN_CAPABILITY_PBCC (1<<6)
850#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
851
852/* 802.11h */
853#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
854#define WLAN_CAPABILITY_QOS (1<<9)
855#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
856#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
857/* measurement */
858#define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
859#define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
860#define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
861
862#define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
863#define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
864#define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
865
866
867/* 802.11g ERP information element */
868#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
869#define WLAN_ERP_USE_PROTECTION (1<<1)
870#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
871
872/* WLAN_ERP_BARKER_PREAMBLE values */
873enum {
874 WLAN_ERP_PREAMBLE_SHORT = 0,
875 WLAN_ERP_PREAMBLE_LONG = 1,
876};
877
878/* Status codes */
879enum ieee80211_statuscode {
880 WLAN_STATUS_SUCCESS = 0,
881 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
882 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
883 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
884 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
885 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
886 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
887 WLAN_STATUS_CHALLENGE_FAIL = 15,
888 WLAN_STATUS_AUTH_TIMEOUT = 16,
889 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
890 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
891 /* 802.11b */
892 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
893 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
894 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
895 /* 802.11h */
896 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
897 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
898 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
899 /* 802.11g */
900 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
901 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
902 /* 802.11i */
903 WLAN_STATUS_INVALID_IE = 40,
904 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
905 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
906 WLAN_STATUS_INVALID_AKMP = 43,
907 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
908 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
909 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
910 /* 802.11e */
911 WLAN_STATUS_UNSPECIFIED_QOS = 32,
912 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
913 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
914 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
915 WLAN_STATUS_REQUEST_DECLINED = 37,
916 WLAN_STATUS_INVALID_QOS_PARAM = 38,
917 WLAN_STATUS_CHANGE_TSPEC = 39,
918 WLAN_STATUS_WAIT_TS_DELAY = 47,
919 WLAN_STATUS_NO_DIRECT_LINK = 48,
920 WLAN_STATUS_STA_NOT_PRESENT = 49,
921 WLAN_STATUS_STA_NOT_QSTA = 50,
922};
923
924
925/* Reason codes */
926enum ieee80211_reasoncode {
927 WLAN_REASON_UNSPECIFIED = 1,
928 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
929 WLAN_REASON_DEAUTH_LEAVING = 3,
930 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
931 WLAN_REASON_DISASSOC_AP_BUSY = 5,
932 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
933 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
934 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
935 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
936 /* 802.11h */
937 WLAN_REASON_DISASSOC_BAD_POWER = 10,
938 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
939 /* 802.11i */
940 WLAN_REASON_INVALID_IE = 13,
941 WLAN_REASON_MIC_FAILURE = 14,
942 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
943 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
944 WLAN_REASON_IE_DIFFERENT = 17,
945 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
946 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
947 WLAN_REASON_INVALID_AKMP = 20,
948 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
949 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
950 WLAN_REASON_IEEE8021X_FAILED = 23,
951 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
952 /* 802.11e */
953 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
954 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
955 WLAN_REASON_DISASSOC_LOW_ACK = 34,
956 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
957 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
958 WLAN_REASON_QSTA_NOT_USE = 37,
959 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
960 WLAN_REASON_QSTA_TIMEOUT = 39,
961 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
962};
963
964
965/* Information Element IDs */
966enum ieee80211_eid {
967 WLAN_EID_SSID = 0,
968 WLAN_EID_SUPP_RATES = 1,
969 WLAN_EID_FH_PARAMS = 2,
970 WLAN_EID_DS_PARAMS = 3,
971 WLAN_EID_CF_PARAMS = 4,
972 WLAN_EID_TIM = 5,
973 WLAN_EID_IBSS_PARAMS = 6,
974 WLAN_EID_CHALLENGE = 16,
975 /* 802.11d */
976 WLAN_EID_COUNTRY = 7,
977 WLAN_EID_HP_PARAMS = 8,
978 WLAN_EID_HP_TABLE = 9,
979 WLAN_EID_REQUEST = 10,
980 /* 802.11e */
981 WLAN_EID_QBSS_LOAD = 11,
982 WLAN_EID_EDCA_PARAM_SET = 12,
983 WLAN_EID_TSPEC = 13,
984 WLAN_EID_TCLAS = 14,
985 WLAN_EID_SCHEDULE = 15,
986 WLAN_EID_TS_DELAY = 43,
987 WLAN_EID_TCLAS_PROCESSING = 44,
988 WLAN_EID_QOS_CAPA = 46,
989 /* 802.11s
990 *
991 * All mesh EID numbers are pending IEEE 802.11 ANA approval.
992 * The numbers have been incremented from those suggested in
993 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
994 * EXT_SUPP_RATES.
995 */
996 WLAN_EID_MESH_CONFIG = 51,
997 WLAN_EID_MESH_ID = 52,
998 WLAN_EID_PEER_LINK = 55,
999 WLAN_EID_PREQ = 68,
1000 WLAN_EID_PREP = 69,
1001 WLAN_EID_PERR = 70,
1002 /* 802.11h */
1003 WLAN_EID_PWR_CONSTRAINT = 32,
1004 WLAN_EID_PWR_CAPABILITY = 33,
1005 WLAN_EID_TPC_REQUEST = 34,
1006 WLAN_EID_TPC_REPORT = 35,
1007 WLAN_EID_SUPPORTED_CHANNELS = 36,
1008 WLAN_EID_CHANNEL_SWITCH = 37,
1009 WLAN_EID_MEASURE_REQUEST = 38,
1010 WLAN_EID_MEASURE_REPORT = 39,
1011 WLAN_EID_QUIET = 40,
1012 WLAN_EID_IBSS_DFS = 41,
1013 /* 802.11g */
1014 WLAN_EID_ERP_INFO = 42,
1015 WLAN_EID_EXT_SUPP_RATES = 50,
1016 /* 802.11n */
1017 WLAN_EID_HT_CAPABILITY = 45,
1018 WLAN_EID_HT_INFORMATION = 61,
1019 /* 802.11i */
1020 WLAN_EID_RSN = 48,
1021 WLAN_EID_WPA = 221,
1022 WLAN_EID_GENERIC = 221,
1023 WLAN_EID_VENDOR_SPECIFIC = 221,
1024 WLAN_EID_QOS_PARAMETER = 222
1025};
1026
1027/* Action category code */
1028enum ieee80211_category {
1029 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1030 WLAN_CATEGORY_QOS = 1,
1031 WLAN_CATEGORY_DLS = 2,
1032 WLAN_CATEGORY_BACK = 3,
1033 WLAN_CATEGORY_WMM = 17,
1034};
1035
1036/* SPECTRUM_MGMT action code */
1037enum ieee80211_spectrum_mgmt_actioncode {
1038 WLAN_ACTION_SPCT_MSR_REQ = 0,
1039 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1040 WLAN_ACTION_SPCT_TPC_REQ = 2,
1041 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1042 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1043};
1044
1045/*
1046 * IEEE 802.11-2007 7.3.2.9 Country information element
1047 *
1048 * Minimum length is 8 octets, ie len must be evenly
1049 * divisible by 2
1050 */
1051
1052/* Although the spec says 8 I'm seeing 6 in practice */
1053#define IEEE80211_COUNTRY_IE_MIN_LEN 6
1054
1055/*
1056 * For regulatory extension stuff see IEEE 802.11-2007
1057 * Annex I (page 1141) and Annex J (page 1147). Also
1058 * review 7.3.2.9.
1059 *
1060 * When dot11RegulatoryClassesRequired is true and the
1061 * first_channel/reg_extension_id is >= 201 then the IE
1062 * compromises of the 'ext' struct represented below:
1063 *
1064 * - Regulatory extension ID - when generating IE this just needs
1065 * to be monotonically increasing for each triplet passed in
1066 * the IE
1067 * - Regulatory class - index into set of rules
1068 * - Coverage class - index into air propagation time (Table 7-27),
1069 * in microseconds, you can compute the air propagation time from
1070 * the index by multiplying by 3, so index 10 yields a propagation
1071 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1072 * yet. A value of 0 inicates air propagation of <= 1 us.
1073 *
1074 * See also Table I.2 for Emission limit sets and table
1075 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1076 * a reg_class to an emission limit set and behavior limit set.
1077 */
1078#define IEEE80211_COUNTRY_EXTENSION_ID 201
1079
1080/*
1081 * Channels numbers in the IE must be monotonically increasing
1082 * if dot11RegulatoryClassesRequired is not true.
1083 *
1084 * If dot11RegulatoryClassesRequired is true consecutive
1085 * subband triplets following a regulatory triplet shall
1086 * have monotonically increasing first_channel number fields.
1087 *
1088 * Channel numbers shall not overlap.
1089 *
1090 * Note that max_power is signed.
1091 */
1092struct ieee80211_country_ie_triplet {
1093 union {
1094 struct {
1095 u8 first_channel;
1096 u8 num_channels;
1097 s8 max_power;
1098 } __attribute__ ((packed)) chans;
1099 struct {
1100 u8 reg_extension_id;
1101 u8 reg_class;
1102 u8 coverage_class;
1103 } __attribute__ ((packed)) ext;
1104 };
1105} __attribute__ ((packed));
1106
1107/* BACK action code */
1108enum ieee80211_back_actioncode {
1109 WLAN_ACTION_ADDBA_REQ = 0,
1110 WLAN_ACTION_ADDBA_RESP = 1,
1111 WLAN_ACTION_DELBA = 2,
1112};
1113
1114/* BACK (block-ack) parties */
1115enum ieee80211_back_parties {
1116 WLAN_BACK_RECIPIENT = 0,
1117 WLAN_BACK_INITIATOR = 1,
1118 WLAN_BACK_TIMER = 2,
1119};
1120
1121/* A-MSDU 802.11n */
1122#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1123
1124/* cipher suite selectors */
1125#define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1126#define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1127#define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1128/* reserved: 0x000FAC03 */
1129#define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1130#define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1131
1132#define WLAN_MAX_KEY_LEN 32
1133
1134/**
1135 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1136 * @hdr: the frame
1137 *
1138 * The qos ctrl bytes come after the frame_control, duration, seq_num
1139 * and 3 or 4 addresses of length ETH_ALEN.
1140 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1141 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1142 */
1143static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1144{
1145 if (ieee80211_has_a4(hdr->frame_control))
1146 return (u8 *)hdr + 30;
1147 else
1148 return (u8 *)hdr + 24;
1149}
1150
1151/**
1152 * ieee80211_get_SA - get pointer to SA
1153 * @hdr: the frame
1154 *
1155 * Given an 802.11 frame, this function returns the offset
1156 * to the source address (SA). It does not verify that the
1157 * header is long enough to contain the address, and the
1158 * header must be long enough to contain the frame control
1159 * field.
1160 */
1161static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1162{
1163 if (ieee80211_has_a4(hdr->frame_control))
1164 return hdr->addr4;
1165 if (ieee80211_has_fromds(hdr->frame_control))
1166 return hdr->addr3;
1167 return hdr->addr2;
1168}
1169
1170/**
1171 * ieee80211_get_DA - get pointer to DA
1172 * @hdr: the frame
1173 *
1174 * Given an 802.11 frame, this function returns the offset
1175 * to the destination address (DA). It does not verify that
1176 * the header is long enough to contain the address, and the
1177 * header must be long enough to contain the frame control
1178 * field.
1179 */
1180static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1181{
1182 if (ieee80211_has_tods(hdr->frame_control))
1183 return hdr->addr3;
1184 else
1185 return hdr->addr1;
1186}
1187
1188#endif /* LINUX_IEEE80211_H */