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new retransmit part 3
[cor_2_6_31.git] / include / linux / ieee80211.h
bloba9173d5434d1cd85fa15174ced031ccca34ee4fd
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 /*
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
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 */
73 #define IEEE80211_STYPE_BACK_REQ 0x0080
74 #define IEEE80211_STYPE_BACK 0x0090
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 */
102 #define IEEE80211_MAX_FRAG_THRESHOLD 2352
103 #define IEEE80211_MAX_RTS_THRESHOLD 2353
104 #define IEEE80211_MAX_AID 2007
105 #define IEEE80211_MAX_TIM_LEN 251
106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
107 6.2.1.1.2.
108
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
114
115 #define IEEE80211_MAX_SSID_LEN 32
116
117 #define IEEE80211_MAX_MESH_ID_LEN 32
118 #define IEEE80211_MESH_CONFIG_LEN 19
119
120 #define IEEE80211_QOS_CTL_LEN 2
121 #define IEEE80211_QOS_CTL_TID_MASK 0x000F
122 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
123
124 struct ieee80211_hdr {
125 __le16 frame_control;
126 __le16 duration_id;
127 u8 addr1[6];
128 u8 addr2[6];
129 u8 addr3[6];
130 __le16 seq_ctrl;
131 u8 addr4[6];
132 } __attribute__ ((packed));
133
134 /**
135 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
136 * @fc: frame control bytes in little-endian byteorder
137 */
138 static inline int ieee80211_has_tods(__le16 fc)
139 {
140 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
141 }
142
143 /**
144 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
145 * @fc: frame control bytes in little-endian byteorder
146 */
147 static inline int ieee80211_has_fromds(__le16 fc)
148 {
149 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
150 }
151
152 /**
153 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
154 * @fc: frame control bytes in little-endian byteorder
155 */
156 static inline int ieee80211_has_a4(__le16 fc)
157 {
158 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
159 return (fc & tmp) == tmp;
160 }
161
162 /**
163 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
164 * @fc: frame control bytes in little-endian byteorder
165 */
166 static inline int ieee80211_has_morefrags(__le16 fc)
167 {
168 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
169 }
170
171 /**
172 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
173 * @fc: frame control bytes in little-endian byteorder
174 */
175 static inline int ieee80211_has_retry(__le16 fc)
176 {
177 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
178 }
179
180 /**
181 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
182 * @fc: frame control bytes in little-endian byteorder
183 */
184 static inline int ieee80211_has_pm(__le16 fc)
185 {
186 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
187 }
188
189 /**
190 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
191 * @fc: frame control bytes in little-endian byteorder
192 */
193 static inline int ieee80211_has_moredata(__le16 fc)
194 {
195 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
196 }
197
198 /**
199 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
200 * @fc: frame control bytes in little-endian byteorder
201 */
202 static inline int ieee80211_has_protected(__le16 fc)
203 {
204 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
205 }
206
207 /**
208 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
209 * @fc: frame control bytes in little-endian byteorder
210 */
211 static inline int ieee80211_has_order(__le16 fc)
212 {
213 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
214 }
215
216 /**
217 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
218 * @fc: frame control bytes in little-endian byteorder
219 */
220 static inline int ieee80211_is_mgmt(__le16 fc)
221 {
222 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
223 cpu_to_le16(IEEE80211_FTYPE_MGMT);
224 }
225
226 /**
227 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
228 * @fc: frame control bytes in little-endian byteorder
229 */
230 static inline int ieee80211_is_ctl(__le16 fc)
231 {
232 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
233 cpu_to_le16(IEEE80211_FTYPE_CTL);
234 }
235
236 /**
237 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
238 * @fc: frame control bytes in little-endian byteorder
239 */
240 static inline int ieee80211_is_data(__le16 fc)
241 {
242 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
243 cpu_to_le16(IEEE80211_FTYPE_DATA);
244 }
245
246 /**
247 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
248 * @fc: frame control bytes in little-endian byteorder
249 */
250 static inline int ieee80211_is_data_qos(__le16 fc)
251 {
252 /*
253 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
254 * to check the one bit
255 */
256 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
257 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
258 }
259
260 /**
261 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
262 * @fc: frame control bytes in little-endian byteorder
263 */
264 static inline int ieee80211_is_data_present(__le16 fc)
265 {
266 /*
267 * mask with 0x40 and test that that bit is clear to only return true
268 * for the data-containing substypes.
269 */
270 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
271 cpu_to_le16(IEEE80211_FTYPE_DATA);
272 }
273
274 /**
275 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
276 * @fc: frame control bytes in little-endian byteorder
277 */
278 static inline int ieee80211_is_assoc_req(__le16 fc)
279 {
280 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
281 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
282 }
283
284 /**
285 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
286 * @fc: frame control bytes in little-endian byteorder
287 */
288 static inline int ieee80211_is_assoc_resp(__le16 fc)
289 {
290 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
291 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
292 }
293
294 /**
295 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
296 * @fc: frame control bytes in little-endian byteorder
297 */
298 static inline int ieee80211_is_reassoc_req(__le16 fc)
299 {
300 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
301 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
302 }
303
304 /**
305 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
306 * @fc: frame control bytes in little-endian byteorder
307 */
308 static inline int ieee80211_is_reassoc_resp(__le16 fc)
309 {
310 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
311 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
312 }
313
314 /**
315 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
316 * @fc: frame control bytes in little-endian byteorder
317 */
318 static inline int ieee80211_is_probe_req(__le16 fc)
319 {
320 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
321 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
322 }
323
324 /**
325 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
326 * @fc: frame control bytes in little-endian byteorder
327 */
328 static inline int ieee80211_is_probe_resp(__le16 fc)
329 {
330 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
331 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
332 }
333
334 /**
335 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
336 * @fc: frame control bytes in little-endian byteorder
337 */
338 static inline int ieee80211_is_beacon(__le16 fc)
339 {
340 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
341 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
342 }
343
344 /**
345 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
346 * @fc: frame control bytes in little-endian byteorder
347 */
348 static inline int ieee80211_is_atim(__le16 fc)
349 {
350 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
351 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
352 }
353
354 /**
355 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
356 * @fc: frame control bytes in little-endian byteorder
357 */
358 static inline int ieee80211_is_disassoc(__le16 fc)
359 {
360 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
361 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
362 }
363
364 /**
365 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
366 * @fc: frame control bytes in little-endian byteorder
367 */
368 static inline int ieee80211_is_auth(__le16 fc)
369 {
370 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
371 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
372 }
373
374 /**
375 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
376 * @fc: frame control bytes in little-endian byteorder
377 */
378 static inline int ieee80211_is_deauth(__le16 fc)
379 {
380 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
381 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
382 }
383
384 /**
385 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
386 * @fc: frame control bytes in little-endian byteorder
387 */
388 static inline int ieee80211_is_action(__le16 fc)
389 {
390 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
391 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
392 }
393
394 /**
395 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
396 * @fc: frame control bytes in little-endian byteorder
397 */
398 static inline int ieee80211_is_back_req(__le16 fc)
399 {
400 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
401 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
402 }
403
404 /**
405 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
406 * @fc: frame control bytes in little-endian byteorder
407 */
408 static inline int ieee80211_is_back(__le16 fc)
409 {
410 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
411 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
412 }
413
414 /**
415 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
416 * @fc: frame control bytes in little-endian byteorder
417 */
418 static inline int ieee80211_is_pspoll(__le16 fc)
419 {
420 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
421 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
422 }
423
424 /**
425 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
426 * @fc: frame control bytes in little-endian byteorder
427 */
428 static inline int ieee80211_is_rts(__le16 fc)
429 {
430 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
431 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
432 }
433
434 /**
435 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
436 * @fc: frame control bytes in little-endian byteorder
437 */
438 static inline int ieee80211_is_cts(__le16 fc)
439 {
440 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
441 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
442 }
443
444 /**
445 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
446 * @fc: frame control bytes in little-endian byteorder
447 */
448 static inline int ieee80211_is_ack(__le16 fc)
449 {
450 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
451 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
452 }
453
454 /**
455 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
456 * @fc: frame control bytes in little-endian byteorder
457 */
458 static inline int ieee80211_is_cfend(__le16 fc)
459 {
460 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
461 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
462 }
463
464 /**
465 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
466 * @fc: frame control bytes in little-endian byteorder
467 */
468 static inline int ieee80211_is_cfendack(__le16 fc)
469 {
470 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
471 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
472 }
473
474 /**
475 * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC
476 * @fc: frame control bytes in little-endian byteorder
477 */
478 static inline int ieee80211_is_nullfunc(__le16 fc)
479 {
480 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
481 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
482 }
483
484 struct ieee80211s_hdr {
485 u8 flags;
486 u8 ttl;
487 __le32 seqnum;
488 u8 eaddr1[6];
489 u8 eaddr2[6];
490 u8 eaddr3[6];
491 } __attribute__ ((packed));
492
493 /* Mesh flags */
494 #define MESH_FLAGS_AE_A4 0x1
495 #define MESH_FLAGS_AE_A5_A6 0x2
496 #define MESH_FLAGS_AE 0x3
497 #define MESH_FLAGS_PS_DEEP 0x4
498
499 /**
500 * struct ieee80211_quiet_ie
501 *
502 * This structure refers to "Quiet information element"
503 */
504 struct ieee80211_quiet_ie {
505 u8 count;
506 u8 period;
507 __le16 duration;
508 __le16 offset;
509 } __attribute__ ((packed));
510
511 /**
512 * struct ieee80211_msrment_ie
513 *
514 * This structure refers to "Measurement Request/Report information element"
515 */
516 struct ieee80211_msrment_ie {
517 u8 token;
518 u8 mode;
519 u8 type;
520 u8 request[0];
521 } __attribute__ ((packed));
522
523 /**
524 * struct ieee80211_channel_sw_ie
525 *
526 * This structure refers to "Channel Switch Announcement information element"
527 */
528 struct ieee80211_channel_sw_ie {
529 u8 mode;
530 u8 new_ch_num;
531 u8 count;
532 } __attribute__ ((packed));
533
534 /**
535 * struct ieee80211_tim
536 *
537 * This structure refers to "Traffic Indication Map information element"
538 */
539 struct ieee80211_tim_ie {
540 u8 dtim_count;
541 u8 dtim_period;
542 u8 bitmap_ctrl;
543 /* variable size: 1 - 251 bytes */
544 u8 virtual_map[1];
545 } __attribute__ ((packed));
546
547 #define WLAN_SA_QUERY_TR_ID_LEN 2
548
549 struct ieee80211_mgmt {
550 __le16 frame_control;
551 __le16 duration;
552 u8 da[6];
553 u8 sa[6];
554 u8 bssid[6];
555 __le16 seq_ctrl;
556 union {
557 struct {
558 __le16 auth_alg;
559 __le16 auth_transaction;
560 __le16 status_code;
561 /* possibly followed by Challenge text */
562 u8 variable[0];
563 } __attribute__ ((packed)) auth;
564 struct {
565 __le16 reason_code;
566 } __attribute__ ((packed)) deauth;
567 struct {
568 __le16 capab_info;
569 __le16 listen_interval;
570 /* followed by SSID and Supported rates */
571 u8 variable[0];
572 } __attribute__ ((packed)) assoc_req;
573 struct {
574 __le16 capab_info;
575 __le16 status_code;
576 __le16 aid;
577 /* followed by Supported rates */
578 u8 variable[0];
579 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
580 struct {
581 __le16 capab_info;
582 __le16 listen_interval;
583 u8 current_ap[6];
584 /* followed by SSID and Supported rates */
585 u8 variable[0];
586 } __attribute__ ((packed)) reassoc_req;
587 struct {
588 __le16 reason_code;
589 } __attribute__ ((packed)) disassoc;
590 struct {
591 __le64 timestamp;
592 __le16 beacon_int;
593 __le16 capab_info;
594 /* followed by some of SSID, Supported rates,
595 * FH Params, DS Params, CF Params, IBSS Params, TIM */
596 u8 variable[0];
597 } __attribute__ ((packed)) beacon;
598 struct {
599 /* only variable items: SSID, Supported rates */
600 u8 variable[0];
601 } __attribute__ ((packed)) probe_req;
602 struct {
603 __le64 timestamp;
604 __le16 beacon_int;
605 __le16 capab_info;
606 /* followed by some of SSID, Supported rates,
607 * FH Params, DS Params, CF Params, IBSS Params */
608 u8 variable[0];
609 } __attribute__ ((packed)) probe_resp;
610 struct {
611 u8 category;
612 union {
613 struct {
614 u8 action_code;
615 u8 dialog_token;
616 u8 status_code;
617 u8 variable[0];
618 } __attribute__ ((packed)) wme_action;
619 struct{
620 u8 action_code;
621 u8 element_id;
622 u8 length;
623 struct ieee80211_channel_sw_ie sw_elem;
624 } __attribute__((packed)) chan_switch;
625 struct{
626 u8 action_code;
627 u8 dialog_token;
628 u8 element_id;
629 u8 length;
630 struct ieee80211_msrment_ie msr_elem;
631 } __attribute__((packed)) measurement;
632 struct{
633 u8 action_code;
634 u8 dialog_token;
635 __le16 capab;
636 __le16 timeout;
637 __le16 start_seq_num;
638 } __attribute__((packed)) addba_req;
639 struct{
640 u8 action_code;
641 u8 dialog_token;
642 __le16 status;
643 __le16 capab;
644 __le16 timeout;
645 } __attribute__((packed)) addba_resp;
646 struct{
647 u8 action_code;
648 __le16 params;
649 __le16 reason_code;
650 } __attribute__((packed)) delba;
651 struct{
652 u8 action_code;
653 /* capab_info for open and confirm,
654 * reason for close
655 */
656 __le16 aux;
657 /* Followed in plink_confirm by status
658 * code, AID and supported rates,
659 * and directly by supported rates in
660 * plink_open and plink_close
661 */
662 u8 variable[0];
663 } __attribute__((packed)) plink_action;
664 struct{
665 u8 action_code;
666 u8 variable[0];
667 } __attribute__((packed)) mesh_action;
668 struct {
669 u8 action;
670 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
671 } __attribute__ ((packed)) sa_query;
672 } u;
673 } __attribute__ ((packed)) action;
674 } u;
675 } __attribute__ ((packed));
676
677 /* mgmt header + 1 byte category code */
678 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
679
680
681 /* Management MIC information element (IEEE 802.11w) */
682 struct ieee80211_mmie {
683 u8 element_id;
684 u8 length;
685 __le16 key_id;
686 u8 sequence_number[6];
687 u8 mic[8];
688 } __attribute__ ((packed));
689
690 /* Control frames */
691 struct ieee80211_rts {
692 __le16 frame_control;
693 __le16 duration;
694 u8 ra[6];
695 u8 ta[6];
696 } __attribute__ ((packed));
697
698 struct ieee80211_cts {
699 __le16 frame_control;
700 __le16 duration;
701 u8 ra[6];
702 } __attribute__ ((packed));
703
704 struct ieee80211_pspoll {
705 __le16 frame_control;
706 __le16 aid;
707 u8 bssid[6];
708 u8 ta[6];
709 } __attribute__ ((packed));
710
711 /**
712 * struct ieee80211_bar - HT Block Ack Request
713 *
714 * This structure refers to "HT BlockAckReq" as
715 * described in 802.11n draft section 7.2.1.7.1
716 */
717 struct ieee80211_bar {
718 __le16 frame_control;
719 __le16 duration;
720 __u8 ra[6];
721 __u8 ta[6];
722 __le16 control;
723 __le16 start_seq_num;
724 } __attribute__((packed));
725
726 /* 802.11 BAR control masks */
727 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
728 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
729
730
731 #define IEEE80211_HT_MCS_MASK_LEN 10
732
733 /**
734 * struct ieee80211_mcs_info - MCS information
735 * @rx_mask: RX mask
736 * @rx_highest: highest supported RX rate
737 * @tx_params: TX parameters
738 */
739 struct ieee80211_mcs_info {
740 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
741 __le16 rx_highest;
742 u8 tx_params;
743 u8 reserved[3];
744 } __attribute__((packed));
745
746 /* 802.11n HT capability MSC set */
747 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
748 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
749 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
750 /* value 0 == 1 stream etc */
751 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
752 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
753 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
754 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
755
756 /*
757 * 802.11n D5.0 20.3.5 / 20.6 says:
758 * - indices 0 to 7 and 32 are single spatial stream
759 * - 8 to 31 are multiple spatial streams using equal modulation
760 * [8..15 for two streams, 16..23 for three and 24..31 for four]
761 * - remainder are multiple spatial streams using unequal modulation
762 */
763 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
764 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
765 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
766
767 /**
768 * struct ieee80211_ht_cap - HT capabilities
769 *
770 * This structure is the "HT capabilities element" as
771 * described in 802.11n D5.0 7.3.2.57
772 */
773 struct ieee80211_ht_cap {
774 __le16 cap_info;
775 u8 ampdu_params_info;
776
777 /* 16 bytes MCS information */
778 struct ieee80211_mcs_info mcs;
779
780 __le16 extended_ht_cap_info;
781 __le32 tx_BF_cap_info;
782 u8 antenna_selection_info;
783 } __attribute__ ((packed));
784
785 /* 802.11n HT capabilities masks (for cap_info) */
786 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
787 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
788 #define IEEE80211_HT_CAP_SM_PS 0x000C
789 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
790 #define IEEE80211_HT_CAP_SGI_20 0x0020
791 #define IEEE80211_HT_CAP_SGI_40 0x0040
792 #define IEEE80211_HT_CAP_TX_STBC 0x0080
793 #define IEEE80211_HT_CAP_RX_STBC 0x0300
794 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
795 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
796 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
797 #define IEEE80211_HT_CAP_PSMP_SUPPORT 0x2000
798 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
799 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
800
801 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
802 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
803 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
804
805 /**
806 * struct ieee80211_ht_info - HT information
807 *
808 * This structure is the "HT information element" as
809 * described in 802.11n D5.0 7.3.2.58
810 */
811 struct ieee80211_ht_info {
812 u8 control_chan;
813 u8 ht_param;
814 __le16 operation_mode;
815 __le16 stbc_param;
816 u8 basic_set[16];
817 } __attribute__ ((packed));
818
819 /* for ht_param */
820 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
821 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
822 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
823 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
824 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
825 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
826 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
827 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
828
829 /* for operation_mode */
830 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
831 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
832 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
833 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
834 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
835 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
836 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
837
838 /* for stbc_param */
839 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
840 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
841 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
842 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
843 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
844 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
845
846
847 /* block-ack parameters */
848 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
849 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
850 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
851 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
852 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
853
854 /*
855 * A-PMDU buffer sizes
856 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
857 */
858 #define IEEE80211_MIN_AMPDU_BUF 0x8
859 #define IEEE80211_MAX_AMPDU_BUF 0x40
860
861
862 /* Spatial Multiplexing Power Save Modes */
863 #define WLAN_HT_CAP_SM_PS_STATIC 0
864 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
865 #define WLAN_HT_CAP_SM_PS_INVALID 2
866 #define WLAN_HT_CAP_SM_PS_DISABLED 3
867
868 /* Authentication algorithms */
869 #define WLAN_AUTH_OPEN 0
870 #define WLAN_AUTH_SHARED_KEY 1
871 #define WLAN_AUTH_FT 2
872 #define WLAN_AUTH_LEAP 128
873
874 #define WLAN_AUTH_CHALLENGE_LEN 128
875
876 #define WLAN_CAPABILITY_ESS (1<<0)
877 #define WLAN_CAPABILITY_IBSS (1<<1)
878 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
879 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
880 #define WLAN_CAPABILITY_PRIVACY (1<<4)
881 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
882 #define WLAN_CAPABILITY_PBCC (1<<6)
883 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
884
885 /* 802.11h */
886 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
887 #define WLAN_CAPABILITY_QOS (1<<9)
888 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
889 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
890 /* measurement */
891 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
892 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
893 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
894
895 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
896 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
897 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
898
899
900 /* 802.11g ERP information element */
901 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
902 #define WLAN_ERP_USE_PROTECTION (1<<1)
903 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
904
905 /* WLAN_ERP_BARKER_PREAMBLE values */
906 enum {
907 WLAN_ERP_PREAMBLE_SHORT = 0,
908 WLAN_ERP_PREAMBLE_LONG = 1,
909 };
910
911 /* Status codes */
912 enum ieee80211_statuscode {
913 WLAN_STATUS_SUCCESS = 0,
914 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
915 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
916 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
917 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
918 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
919 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
920 WLAN_STATUS_CHALLENGE_FAIL = 15,
921 WLAN_STATUS_AUTH_TIMEOUT = 16,
922 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
923 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
924 /* 802.11b */
925 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
926 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
927 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
928 /* 802.11h */
929 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
930 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
931 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
932 /* 802.11g */
933 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
934 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
935 /* 802.11w */
936 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
937 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
938 /* 802.11i */
939 WLAN_STATUS_INVALID_IE = 40,
940 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
941 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
942 WLAN_STATUS_INVALID_AKMP = 43,
943 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
944 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
945 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
946 /* 802.11e */
947 WLAN_STATUS_UNSPECIFIED_QOS = 32,
948 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
949 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
950 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
951 WLAN_STATUS_REQUEST_DECLINED = 37,
952 WLAN_STATUS_INVALID_QOS_PARAM = 38,
953 WLAN_STATUS_CHANGE_TSPEC = 39,
954 WLAN_STATUS_WAIT_TS_DELAY = 47,
955 WLAN_STATUS_NO_DIRECT_LINK = 48,
956 WLAN_STATUS_STA_NOT_PRESENT = 49,
957 WLAN_STATUS_STA_NOT_QSTA = 50,
958 };
959
960
961 /* Reason codes */
962 enum ieee80211_reasoncode {
963 WLAN_REASON_UNSPECIFIED = 1,
964 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
965 WLAN_REASON_DEAUTH_LEAVING = 3,
966 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
967 WLAN_REASON_DISASSOC_AP_BUSY = 5,
968 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
969 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
970 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
971 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
972 /* 802.11h */
973 WLAN_REASON_DISASSOC_BAD_POWER = 10,
974 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
975 /* 802.11i */
976 WLAN_REASON_INVALID_IE = 13,
977 WLAN_REASON_MIC_FAILURE = 14,
978 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
979 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
980 WLAN_REASON_IE_DIFFERENT = 17,
981 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
982 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
983 WLAN_REASON_INVALID_AKMP = 20,
984 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
985 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
986 WLAN_REASON_IEEE8021X_FAILED = 23,
987 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
988 /* 802.11e */
989 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
990 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
991 WLAN_REASON_DISASSOC_LOW_ACK = 34,
992 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
993 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
994 WLAN_REASON_QSTA_NOT_USE = 37,
995 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
996 WLAN_REASON_QSTA_TIMEOUT = 39,
997 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
998 };
999
1000
1001 /* Information Element IDs */
1002 enum ieee80211_eid {
1003 WLAN_EID_SSID = 0,
1004 WLAN_EID_SUPP_RATES = 1,
1005 WLAN_EID_FH_PARAMS = 2,
1006 WLAN_EID_DS_PARAMS = 3,
1007 WLAN_EID_CF_PARAMS = 4,
1008 WLAN_EID_TIM = 5,
1009 WLAN_EID_IBSS_PARAMS = 6,
1010 WLAN_EID_CHALLENGE = 16,
1011 /* 802.11d */
1012 WLAN_EID_COUNTRY = 7,
1013 WLAN_EID_HP_PARAMS = 8,
1014 WLAN_EID_HP_TABLE = 9,
1015 WLAN_EID_REQUEST = 10,
1016 /* 802.11e */
1017 WLAN_EID_QBSS_LOAD = 11,
1018 WLAN_EID_EDCA_PARAM_SET = 12,
1019 WLAN_EID_TSPEC = 13,
1020 WLAN_EID_TCLAS = 14,
1021 WLAN_EID_SCHEDULE = 15,
1022 WLAN_EID_TS_DELAY = 43,
1023 WLAN_EID_TCLAS_PROCESSING = 44,
1024 WLAN_EID_QOS_CAPA = 46,
1025 /* 802.11s
1026 *
1027 * All mesh EID numbers are pending IEEE 802.11 ANA approval.
1028 * The numbers have been incremented from those suggested in
1029 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
1030 * EXT_SUPP_RATES.
1031 */
1032 WLAN_EID_MESH_CONFIG = 51,
1033 WLAN_EID_MESH_ID = 52,
1034 WLAN_EID_PEER_LINK = 55,
1035 WLAN_EID_PREQ = 68,
1036 WLAN_EID_PREP = 69,
1037 WLAN_EID_PERR = 70,
1038 /* 802.11h */
1039 WLAN_EID_PWR_CONSTRAINT = 32,
1040 WLAN_EID_PWR_CAPABILITY = 33,
1041 WLAN_EID_TPC_REQUEST = 34,
1042 WLAN_EID_TPC_REPORT = 35,
1043 WLAN_EID_SUPPORTED_CHANNELS = 36,
1044 WLAN_EID_CHANNEL_SWITCH = 37,
1045 WLAN_EID_MEASURE_REQUEST = 38,
1046 WLAN_EID_MEASURE_REPORT = 39,
1047 WLAN_EID_QUIET = 40,
1048 WLAN_EID_IBSS_DFS = 41,
1049 /* 802.11g */
1050 WLAN_EID_ERP_INFO = 42,
1051 WLAN_EID_EXT_SUPP_RATES = 50,
1052 /* 802.11n */
1053 WLAN_EID_HT_CAPABILITY = 45,
1054 WLAN_EID_HT_INFORMATION = 61,
1055 /* 802.11i */
1056 WLAN_EID_RSN = 48,
1057 WLAN_EID_TIMEOUT_INTERVAL = 56,
1058 WLAN_EID_MMIE = 76 /* 802.11w */,
1059 WLAN_EID_WPA = 221,
1060 WLAN_EID_GENERIC = 221,
1061 WLAN_EID_VENDOR_SPECIFIC = 221,
1062 WLAN_EID_QOS_PARAMETER = 222
1063 };
1064
1065 /* Action category code */
1066 enum ieee80211_category {
1067 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1068 WLAN_CATEGORY_QOS = 1,
1069 WLAN_CATEGORY_DLS = 2,
1070 WLAN_CATEGORY_BACK = 3,
1071 WLAN_CATEGORY_PUBLIC = 4,
1072 WLAN_CATEGORY_HT = 7,
1073 WLAN_CATEGORY_SA_QUERY = 8,
1074 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1075 WLAN_CATEGORY_WMM = 17,
1076 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1077 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1078 };
1079
1080 /* SPECTRUM_MGMT action code */
1081 enum ieee80211_spectrum_mgmt_actioncode {
1082 WLAN_ACTION_SPCT_MSR_REQ = 0,
1083 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1084 WLAN_ACTION_SPCT_TPC_REQ = 2,
1085 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1086 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1087 };
1088
1089 /* Security key length */
1090 enum ieee80211_key_len {
1091 WLAN_KEY_LEN_WEP40 = 5,
1092 WLAN_KEY_LEN_WEP104 = 13,
1093 WLAN_KEY_LEN_CCMP = 16,
1094 WLAN_KEY_LEN_TKIP = 32,
1095 WLAN_KEY_LEN_AES_CMAC = 16,
1096 };
1097
1098 /*
1099 * IEEE 802.11-2007 7.3.2.9 Country information element
1100 *
1101 * Minimum length is 8 octets, ie len must be evenly
1102 * divisible by 2
1103 */
1104
1105 /* Although the spec says 8 I'm seeing 6 in practice */
1106 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1107
1108 /*
1109 * For regulatory extension stuff see IEEE 802.11-2007
1110 * Annex I (page 1141) and Annex J (page 1147). Also
1111 * review 7.3.2.9.
1112 *
1113 * When dot11RegulatoryClassesRequired is true and the
1114 * first_channel/reg_extension_id is >= 201 then the IE
1115 * compromises of the 'ext' struct represented below:
1116 *
1117 * - Regulatory extension ID - when generating IE this just needs
1118 * to be monotonically increasing for each triplet passed in
1119 * the IE
1120 * - Regulatory class - index into set of rules
1121 * - Coverage class - index into air propagation time (Table 7-27),
1122 * in microseconds, you can compute the air propagation time from
1123 * the index by multiplying by 3, so index 10 yields a propagation
1124 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1125 * yet. A value of 0 inicates air propagation of <= 1 us.
1126 *
1127 * See also Table I.2 for Emission limit sets and table
1128 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1129 * a reg_class to an emission limit set and behavior limit set.
1130 */
1131 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1132
1133 /*
1134 * Channels numbers in the IE must be monotonically increasing
1135 * if dot11RegulatoryClassesRequired is not true.
1136 *
1137 * If dot11RegulatoryClassesRequired is true consecutive
1138 * subband triplets following a regulatory triplet shall
1139 * have monotonically increasing first_channel number fields.
1140 *
1141 * Channel numbers shall not overlap.
1142 *
1143 * Note that max_power is signed.
1144 */
1145 struct ieee80211_country_ie_triplet {
1146 union {
1147 struct {
1148 u8 first_channel;
1149 u8 num_channels;
1150 s8 max_power;
1151 } __attribute__ ((packed)) chans;
1152 struct {
1153 u8 reg_extension_id;
1154 u8 reg_class;
1155 u8 coverage_class;
1156 } __attribute__ ((packed)) ext;
1157 };
1158 } __attribute__ ((packed));
1159
1160 enum ieee80211_timeout_interval_type {
1161 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1162 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1163 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1164 };
1165
1166 /* BACK action code */
1167 enum ieee80211_back_actioncode {
1168 WLAN_ACTION_ADDBA_REQ = 0,
1169 WLAN_ACTION_ADDBA_RESP = 1,
1170 WLAN_ACTION_DELBA = 2,
1171 };
1172
1173 /* BACK (block-ack) parties */
1174 enum ieee80211_back_parties {
1175 WLAN_BACK_RECIPIENT = 0,
1176 WLAN_BACK_INITIATOR = 1,
1177 WLAN_BACK_TIMER = 2,
1178 };
1179
1180 /* SA Query action */
1181 enum ieee80211_sa_query_action {
1182 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1183 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1184 };
1185
1186
1187 /* A-MSDU 802.11n */
1188 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1189
1190 /* cipher suite selectors */
1191 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1192 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1193 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1194 /* reserved: 0x000FAC03 */
1195 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1196 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1197 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1198
1199 #define WLAN_MAX_KEY_LEN 32
1200
1201 /**
1202 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1203 * @hdr: the frame
1204 *
1205 * The qos ctrl bytes come after the frame_control, duration, seq_num
1206 * and 3 or 4 addresses of length ETH_ALEN.
1207 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1208 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1209 */
1210 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1211 {
1212 if (ieee80211_has_a4(hdr->frame_control))
1213 return (u8 *)hdr + 30;
1214 else
1215 return (u8 *)hdr + 24;
1216 }
1217
1218 /**
1219 * ieee80211_get_SA - get pointer to SA
1220 * @hdr: the frame
1221 *
1222 * Given an 802.11 frame, this function returns the offset
1223 * to the source address (SA). It does not verify that the
1224 * header is long enough to contain the address, and the
1225 * header must be long enough to contain the frame control
1226 * field.
1227 */
1228 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1229 {
1230 if (ieee80211_has_a4(hdr->frame_control))
1231 return hdr->addr4;
1232 if (ieee80211_has_fromds(hdr->frame_control))
1233 return hdr->addr3;
1234 return hdr->addr2;
1235 }
1236
1237 /**
1238 * ieee80211_get_DA - get pointer to DA
1239 * @hdr: the frame
1240 *
1241 * Given an 802.11 frame, this function returns the offset
1242 * to the destination address (DA). It does not verify that
1243 * the header is long enough to contain the address, and the
1244 * header must be long enough to contain the frame control
1245 * field.
1246 */
1247 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1248 {
1249 if (ieee80211_has_tods(hdr->frame_control))
1250 return hdr->addr3;
1251 else
1252 return hdr->addr1;
1253 }
1254
1255 /**
1256 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1257 * @hdr: the frame (buffer must include at least the first octet of payload)
1258 */
1259 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1260 {
1261 if (ieee80211_is_disassoc(hdr->frame_control) ||
1262 ieee80211_is_deauth(hdr->frame_control))
1263 return true;
1264
1265 if (ieee80211_is_action(hdr->frame_control)) {
1266 u8 *category;
1267
1268 /*
1269 * Action frames, excluding Public Action frames, are Robust
1270 * Management Frames. However, if we are looking at a Protected
1271 * frame, skip the check since the data may be encrypted and
1272 * the frame has already been found to be a Robust Management
1273 * Frame (by the other end).
1274 */
1275 if (ieee80211_has_protected(hdr->frame_control))
1276 return true;
1277 category = ((u8 *) hdr) + 24;
1278 return *category != WLAN_CATEGORY_PUBLIC &&
1279 *category != WLAN_CATEGORY_HT &&
1280 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1281 }
1282
1283 return false;
1284 }
1285
1286 /**
1287 * ieee80211_fhss_chan_to_freq - get channel frequency
1288 * @channel: the FHSS channel
1289 *
1290 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1291 * Ref IEEE 802.11-2007 section 14.6
1292 */
1293 static inline int ieee80211_fhss_chan_to_freq(int channel)
1294 {
1295 if ((channel > 1) && (channel < 96))
1296 return channel + 2400;
1297 else
1298 return -1;
1299 }
1300
1301 /**
1302 * ieee80211_freq_to_fhss_chan - get channel
1303 * @freq: the channels frequency
1304 *
1305 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1306 * Ref IEEE 802.11-2007 section 14.6
1307 */
1308 static inline int ieee80211_freq_to_fhss_chan(int freq)
1309 {
1310 if ((freq > 2401) && (freq < 2496))
1311 return freq - 2400;
1312 else
1313 return -1;
1314 }
1315
1316 /**
1317 * ieee80211_dsss_chan_to_freq - get channel center frequency
1318 * @channel: the DSSS channel
1319 *
1320 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1321 * Ref IEEE 802.11-2007 section 15.6
1322 */
1323 static inline int ieee80211_dsss_chan_to_freq(int channel)
1324 {
1325 if ((channel > 0) && (channel < 14))
1326 return 2407 + (channel * 5);
1327 else if (channel == 14)
1328 return 2484;
1329 else
1330 return -1;
1331 }
1332
1333 /**
1334 * ieee80211_freq_to_dsss_chan - get channel
1335 * @freq: the frequency
1336 *
1337 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1338 * Ref IEEE 802.11-2007 section 15.6
1339 *
1340 * This routine selects the channel with the closest center frequency.
1341 */
1342 static inline int ieee80211_freq_to_dsss_chan(int freq)
1343 {
1344 if ((freq >= 2410) && (freq < 2475))
1345 return (freq - 2405) / 5;
1346 else if ((freq >= 2482) && (freq < 2487))
1347 return 14;
1348 else
1349 return -1;
1350 }
1351
1352 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1353 * Ref IEEE 802.11-2007 section 18.4.6.2
1354 *
1355 * The channels and frequencies are the same as those defined for DSSS
1356 */
1357 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1358 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1359
1360 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1361 * Ref IEEE 802.11-2007 section 19.4.2
1362 */
1363 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1364 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1365
1366 /**
1367 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1368 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1369 * @channel: the OFDM channel
1370 *
1371 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1372 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1373 */
1374 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1375 {
1376 if ((channel > 0) && (channel <= 200) &&
1377 (s_freq >= 4000))
1378 return s_freq + (channel * 5);
1379 else
1380 return -1;
1381 }
1382
1383 /**
1384 * ieee80211_freq_to_ofdm_channel - get channel
1385 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1386 * @freq: the frequency
1387 *
1388 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1389 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1390 *
1391 * This routine selects the channel with the closest center frequency.
1392 */
1393 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1394 {
1395 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1396 (s_freq >= 4000))
1397 return (freq + 2 - s_freq) / 5;
1398 else
1399 return -1;
1400 }
1401
1402 /**
1403 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1404 * @tu: the TUs
1405 */
1406 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1407 {
1408 return 1024 * tu;
1409 }
1410
1411 /**
1412 * ieee80211_check_tim - check if AID bit is set in TIM
1413 * @tim: the TIM IE
1414 * @tim_len: length of the TIM IE
1415 * @aid: the AID to look for
1416 */
1417 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1418 u8 tim_len, u16 aid)
1419 {
1420 u8 mask;
1421 u8 index, indexn1, indexn2;
1422
1423 if (unlikely(!tim || tim_len < sizeof(*tim)))
1424 return false;
1425
1426 aid &= 0x3fff;
1427 index = aid / 8;
1428 mask = 1 << (aid & 7);
1429
1430 indexn1 = tim->bitmap_ctrl & 0xfe;
1431 indexn2 = tim_len + indexn1 - 4;
1432
1433 if (index < indexn1 || index > indexn2)
1434 return false;
1435
1436 index -= indexn1;
1437
1438 return !!(tim->virtual_map[index] & mask);
1439 }
1440
1441 #endif /* LINUX_IEEE80211_H */
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