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Merge branch 'master' of git://git.infradead.org/users/linville/wireless-next into...
[deliverable/linux.git] / include / linux / ieee80211.h
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
119 #define IEEE80211_QOS_CTL_LEN 2
120 /* 1d tag mask */
121 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
122 /* TID mask */
123 #define IEEE80211_QOS_CTL_TID_MASK 0x000f
124 /* EOSP */
125 #define IEEE80211_QOS_CTL_EOSP 0x0010
126 /* ACK policy */
127 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL 0x0000
128 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK 0x0020
129 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL 0x0040
130 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK 0x0060
131 /* A-MSDU 802.11n */
132 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT 0x0080
133 /* Mesh Control 802.11s */
134 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT 0x0100
135
136 /* U-APSD queue for WMM IEs sent by AP */
137 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7)
138 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f
139
140 /* U-APSD queues for WMM IEs sent by STA */
141 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0)
142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1)
143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2)
144 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3)
145 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f
146
147 /* U-APSD max SP length for WMM IEs sent by STA */
148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00
149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01
150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02
151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03
152 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03
153 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5
154
155 #define IEEE80211_HT_CTL_LEN 4
156
157 struct ieee80211_hdr {
158 __le16 frame_control;
159 __le16 duration_id;
160 u8 addr1[6];
161 u8 addr2[6];
162 u8 addr3[6];
163 __le16 seq_ctrl;
164 u8 addr4[6];
165 } __attribute__ ((packed));
166
167 struct ieee80211_hdr_3addr {
168 __le16 frame_control;
169 __le16 duration_id;
170 u8 addr1[6];
171 u8 addr2[6];
172 u8 addr3[6];
173 __le16 seq_ctrl;
174 } __attribute__ ((packed));
175
176 struct ieee80211_qos_hdr {
177 __le16 frame_control;
178 __le16 duration_id;
179 u8 addr1[6];
180 u8 addr2[6];
181 u8 addr3[6];
182 __le16 seq_ctrl;
183 __le16 qos_ctrl;
184 } __attribute__ ((packed));
185
186 /**
187 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
188 * @fc: frame control bytes in little-endian byteorder
189 */
190 static inline int ieee80211_has_tods(__le16 fc)
191 {
192 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
193 }
194
195 /**
196 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
197 * @fc: frame control bytes in little-endian byteorder
198 */
199 static inline int ieee80211_has_fromds(__le16 fc)
200 {
201 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
202 }
203
204 /**
205 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
206 * @fc: frame control bytes in little-endian byteorder
207 */
208 static inline int ieee80211_has_a4(__le16 fc)
209 {
210 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
211 return (fc & tmp) == tmp;
212 }
213
214 /**
215 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
216 * @fc: frame control bytes in little-endian byteorder
217 */
218 static inline int ieee80211_has_morefrags(__le16 fc)
219 {
220 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
221 }
222
223 /**
224 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
225 * @fc: frame control bytes in little-endian byteorder
226 */
227 static inline int ieee80211_has_retry(__le16 fc)
228 {
229 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
230 }
231
232 /**
233 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
234 * @fc: frame control bytes in little-endian byteorder
235 */
236 static inline int ieee80211_has_pm(__le16 fc)
237 {
238 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
239 }
240
241 /**
242 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
243 * @fc: frame control bytes in little-endian byteorder
244 */
245 static inline int ieee80211_has_moredata(__le16 fc)
246 {
247 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
248 }
249
250 /**
251 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
252 * @fc: frame control bytes in little-endian byteorder
253 */
254 static inline int ieee80211_has_protected(__le16 fc)
255 {
256 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
257 }
258
259 /**
260 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
261 * @fc: frame control bytes in little-endian byteorder
262 */
263 static inline int ieee80211_has_order(__le16 fc)
264 {
265 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
266 }
267
268 /**
269 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
270 * @fc: frame control bytes in little-endian byteorder
271 */
272 static inline int ieee80211_is_mgmt(__le16 fc)
273 {
274 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
275 cpu_to_le16(IEEE80211_FTYPE_MGMT);
276 }
277
278 /**
279 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
280 * @fc: frame control bytes in little-endian byteorder
281 */
282 static inline int ieee80211_is_ctl(__le16 fc)
283 {
284 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
285 cpu_to_le16(IEEE80211_FTYPE_CTL);
286 }
287
288 /**
289 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
290 * @fc: frame control bytes in little-endian byteorder
291 */
292 static inline int ieee80211_is_data(__le16 fc)
293 {
294 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
295 cpu_to_le16(IEEE80211_FTYPE_DATA);
296 }
297
298 /**
299 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
300 * @fc: frame control bytes in little-endian byteorder
301 */
302 static inline int ieee80211_is_data_qos(__le16 fc)
303 {
304 /*
305 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
306 * to check the one bit
307 */
308 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
309 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
310 }
311
312 /**
313 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
314 * @fc: frame control bytes in little-endian byteorder
315 */
316 static inline int ieee80211_is_data_present(__le16 fc)
317 {
318 /*
319 * mask with 0x40 and test that that bit is clear to only return true
320 * for the data-containing substypes.
321 */
322 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
323 cpu_to_le16(IEEE80211_FTYPE_DATA);
324 }
325
326 /**
327 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
328 * @fc: frame control bytes in little-endian byteorder
329 */
330 static inline int ieee80211_is_assoc_req(__le16 fc)
331 {
332 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
333 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
334 }
335
336 /**
337 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
338 * @fc: frame control bytes in little-endian byteorder
339 */
340 static inline int ieee80211_is_assoc_resp(__le16 fc)
341 {
342 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
343 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
344 }
345
346 /**
347 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
348 * @fc: frame control bytes in little-endian byteorder
349 */
350 static inline int ieee80211_is_reassoc_req(__le16 fc)
351 {
352 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
353 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
354 }
355
356 /**
357 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
358 * @fc: frame control bytes in little-endian byteorder
359 */
360 static inline int ieee80211_is_reassoc_resp(__le16 fc)
361 {
362 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
363 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
364 }
365
366 /**
367 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
368 * @fc: frame control bytes in little-endian byteorder
369 */
370 static inline int ieee80211_is_probe_req(__le16 fc)
371 {
372 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
373 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
374 }
375
376 /**
377 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
378 * @fc: frame control bytes in little-endian byteorder
379 */
380 static inline int ieee80211_is_probe_resp(__le16 fc)
381 {
382 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
383 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
384 }
385
386 /**
387 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
388 * @fc: frame control bytes in little-endian byteorder
389 */
390 static inline int ieee80211_is_beacon(__le16 fc)
391 {
392 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
393 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
394 }
395
396 /**
397 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
398 * @fc: frame control bytes in little-endian byteorder
399 */
400 static inline int ieee80211_is_atim(__le16 fc)
401 {
402 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
403 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
404 }
405
406 /**
407 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
408 * @fc: frame control bytes in little-endian byteorder
409 */
410 static inline int ieee80211_is_disassoc(__le16 fc)
411 {
412 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
413 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
414 }
415
416 /**
417 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
418 * @fc: frame control bytes in little-endian byteorder
419 */
420 static inline int ieee80211_is_auth(__le16 fc)
421 {
422 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
423 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
424 }
425
426 /**
427 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
428 * @fc: frame control bytes in little-endian byteorder
429 */
430 static inline int ieee80211_is_deauth(__le16 fc)
431 {
432 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
433 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
434 }
435
436 /**
437 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
438 * @fc: frame control bytes in little-endian byteorder
439 */
440 static inline int ieee80211_is_action(__le16 fc)
441 {
442 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
443 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
444 }
445
446 /**
447 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
448 * @fc: frame control bytes in little-endian byteorder
449 */
450 static inline int ieee80211_is_back_req(__le16 fc)
451 {
452 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
453 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
454 }
455
456 /**
457 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
458 * @fc: frame control bytes in little-endian byteorder
459 */
460 static inline int ieee80211_is_back(__le16 fc)
461 {
462 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
463 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
464 }
465
466 /**
467 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
468 * @fc: frame control bytes in little-endian byteorder
469 */
470 static inline int ieee80211_is_pspoll(__le16 fc)
471 {
472 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
473 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
474 }
475
476 /**
477 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
478 * @fc: frame control bytes in little-endian byteorder
479 */
480 static inline int ieee80211_is_rts(__le16 fc)
481 {
482 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
483 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
484 }
485
486 /**
487 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
488 * @fc: frame control bytes in little-endian byteorder
489 */
490 static inline int ieee80211_is_cts(__le16 fc)
491 {
492 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
493 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
494 }
495
496 /**
497 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
498 * @fc: frame control bytes in little-endian byteorder
499 */
500 static inline int ieee80211_is_ack(__le16 fc)
501 {
502 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
503 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
504 }
505
506 /**
507 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
508 * @fc: frame control bytes in little-endian byteorder
509 */
510 static inline int ieee80211_is_cfend(__le16 fc)
511 {
512 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
513 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
514 }
515
516 /**
517 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
518 * @fc: frame control bytes in little-endian byteorder
519 */
520 static inline int ieee80211_is_cfendack(__le16 fc)
521 {
522 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
523 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
524 }
525
526 /**
527 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
528 * @fc: frame control bytes in little-endian byteorder
529 */
530 static inline int ieee80211_is_nullfunc(__le16 fc)
531 {
532 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
533 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
534 }
535
536 /**
537 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
538 * @fc: frame control bytes in little-endian byteorder
539 */
540 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
541 {
542 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
543 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
544 }
545
546 struct ieee80211s_hdr {
547 u8 flags;
548 u8 ttl;
549 __le32 seqnum;
550 u8 eaddr1[6];
551 u8 eaddr2[6];
552 } __attribute__ ((packed));
553
554 /* Mesh flags */
555 #define MESH_FLAGS_AE_A4 0x1
556 #define MESH_FLAGS_AE_A5_A6 0x2
557 #define MESH_FLAGS_AE 0x3
558 #define MESH_FLAGS_PS_DEEP 0x4
559
560 /**
561 * struct ieee80211_quiet_ie
562 *
563 * This structure refers to "Quiet information element"
564 */
565 struct ieee80211_quiet_ie {
566 u8 count;
567 u8 period;
568 __le16 duration;
569 __le16 offset;
570 } __attribute__ ((packed));
571
572 /**
573 * struct ieee80211_msrment_ie
574 *
575 * This structure refers to "Measurement Request/Report information element"
576 */
577 struct ieee80211_msrment_ie {
578 u8 token;
579 u8 mode;
580 u8 type;
581 u8 request[0];
582 } __attribute__ ((packed));
583
584 /**
585 * struct ieee80211_channel_sw_ie
586 *
587 * This structure refers to "Channel Switch Announcement information element"
588 */
589 struct ieee80211_channel_sw_ie {
590 u8 mode;
591 u8 new_ch_num;
592 u8 count;
593 } __attribute__ ((packed));
594
595 /**
596 * struct ieee80211_tim
597 *
598 * This structure refers to "Traffic Indication Map information element"
599 */
600 struct ieee80211_tim_ie {
601 u8 dtim_count;
602 u8 dtim_period;
603 u8 bitmap_ctrl;
604 /* variable size: 1 - 251 bytes */
605 u8 virtual_map[1];
606 } __attribute__ ((packed));
607
608 /**
609 * struct ieee80211_meshconf_ie
610 *
611 * This structure refers to "Mesh Configuration information element"
612 */
613 struct ieee80211_meshconf_ie {
614 u8 meshconf_psel;
615 u8 meshconf_pmetric;
616 u8 meshconf_congest;
617 u8 meshconf_synch;
618 u8 meshconf_auth;
619 u8 meshconf_form;
620 u8 meshconf_cap;
621 } __attribute__ ((packed));
622
623 /**
624 * struct ieee80211_rann_ie
625 *
626 * This structure refers to "Root Announcement information element"
627 */
628 struct ieee80211_rann_ie {
629 u8 rann_flags;
630 u8 rann_hopcount;
631 u8 rann_ttl;
632 u8 rann_addr[6];
633 u32 rann_seq;
634 u32 rann_interval;
635 u32 rann_metric;
636 } __attribute__ ((packed));
637
638 enum ieee80211_rann_flags {
639 RANN_FLAG_IS_GATE = 1 << 0,
640 };
641
642 #define WLAN_SA_QUERY_TR_ID_LEN 2
643
644 struct ieee80211_mgmt {
645 __le16 frame_control;
646 __le16 duration;
647 u8 da[6];
648 u8 sa[6];
649 u8 bssid[6];
650 __le16 seq_ctrl;
651 union {
652 struct {
653 __le16 auth_alg;
654 __le16 auth_transaction;
655 __le16 status_code;
656 /* possibly followed by Challenge text */
657 u8 variable[0];
658 } __attribute__ ((packed)) auth;
659 struct {
660 __le16 reason_code;
661 } __attribute__ ((packed)) deauth;
662 struct {
663 __le16 capab_info;
664 __le16 listen_interval;
665 /* followed by SSID and Supported rates */
666 u8 variable[0];
667 } __attribute__ ((packed)) assoc_req;
668 struct {
669 __le16 capab_info;
670 __le16 status_code;
671 __le16 aid;
672 /* followed by Supported rates */
673 u8 variable[0];
674 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
675 struct {
676 __le16 capab_info;
677 __le16 listen_interval;
678 u8 current_ap[6];
679 /* followed by SSID and Supported rates */
680 u8 variable[0];
681 } __attribute__ ((packed)) reassoc_req;
682 struct {
683 __le16 reason_code;
684 } __attribute__ ((packed)) disassoc;
685 struct {
686 __le64 timestamp;
687 __le16 beacon_int;
688 __le16 capab_info;
689 /* followed by some of SSID, Supported rates,
690 * FH Params, DS Params, CF Params, IBSS Params, TIM */
691 u8 variable[0];
692 } __attribute__ ((packed)) beacon;
693 struct {
694 /* only variable items: SSID, Supported rates */
695 u8 variable[0];
696 } __attribute__ ((packed)) probe_req;
697 struct {
698 __le64 timestamp;
699 __le16 beacon_int;
700 __le16 capab_info;
701 /* followed by some of SSID, Supported rates,
702 * FH Params, DS Params, CF Params, IBSS Params */
703 u8 variable[0];
704 } __attribute__ ((packed)) probe_resp;
705 struct {
706 u8 category;
707 union {
708 struct {
709 u8 action_code;
710 u8 dialog_token;
711 u8 status_code;
712 u8 variable[0];
713 } __attribute__ ((packed)) wme_action;
714 struct{
715 u8 action_code;
716 u8 element_id;
717 u8 length;
718 struct ieee80211_channel_sw_ie sw_elem;
719 } __attribute__((packed)) chan_switch;
720 struct{
721 u8 action_code;
722 u8 dialog_token;
723 u8 element_id;
724 u8 length;
725 struct ieee80211_msrment_ie msr_elem;
726 } __attribute__((packed)) measurement;
727 struct{
728 u8 action_code;
729 u8 dialog_token;
730 __le16 capab;
731 __le16 timeout;
732 __le16 start_seq_num;
733 } __attribute__((packed)) addba_req;
734 struct{
735 u8 action_code;
736 u8 dialog_token;
737 __le16 status;
738 __le16 capab;
739 __le16 timeout;
740 } __attribute__((packed)) addba_resp;
741 struct{
742 u8 action_code;
743 __le16 params;
744 __le16 reason_code;
745 } __attribute__((packed)) delba;
746 struct {
747 u8 action_code;
748 u8 variable[0];
749 } __attribute__((packed)) self_prot;
750 struct{
751 u8 action_code;
752 u8 variable[0];
753 } __attribute__((packed)) mesh_action;
754 struct {
755 u8 action;
756 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
757 } __attribute__ ((packed)) sa_query;
758 struct {
759 u8 action;
760 u8 smps_control;
761 } __attribute__ ((packed)) ht_smps;
762 } u;
763 } __attribute__ ((packed)) action;
764 } u;
765 } __attribute__ ((packed));
766
767 /* mgmt header + 1 byte category code */
768 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
769
770
771 /* Management MIC information element (IEEE 802.11w) */
772 struct ieee80211_mmie {
773 u8 element_id;
774 u8 length;
775 __le16 key_id;
776 u8 sequence_number[6];
777 u8 mic[8];
778 } __attribute__ ((packed));
779
780 struct ieee80211_vendor_ie {
781 u8 element_id;
782 u8 len;
783 u8 oui[3];
784 u8 oui_type;
785 } __packed;
786
787 /* Control frames */
788 struct ieee80211_rts {
789 __le16 frame_control;
790 __le16 duration;
791 u8 ra[6];
792 u8 ta[6];
793 } __attribute__ ((packed));
794
795 struct ieee80211_cts {
796 __le16 frame_control;
797 __le16 duration;
798 u8 ra[6];
799 } __attribute__ ((packed));
800
801 struct ieee80211_pspoll {
802 __le16 frame_control;
803 __le16 aid;
804 u8 bssid[6];
805 u8 ta[6];
806 } __attribute__ ((packed));
807
808 /**
809 * struct ieee80211_bar - HT Block Ack Request
810 *
811 * This structure refers to "HT BlockAckReq" as
812 * described in 802.11n draft section 7.2.1.7.1
813 */
814 struct ieee80211_bar {
815 __le16 frame_control;
816 __le16 duration;
817 __u8 ra[6];
818 __u8 ta[6];
819 __le16 control;
820 __le16 start_seq_num;
821 } __attribute__((packed));
822
823 /* 802.11 BAR control masks */
824 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
825 #define IEEE80211_BAR_CTRL_MULTI_TID 0x0002
826 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
827 #define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000
828 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12
829
830 #define IEEE80211_HT_MCS_MASK_LEN 10
831
832 /**
833 * struct ieee80211_mcs_info - MCS information
834 * @rx_mask: RX mask
835 * @rx_highest: highest supported RX rate. If set represents
836 * the highest supported RX data rate in units of 1 Mbps.
837 * If this field is 0 this value should not be used to
838 * consider the highest RX data rate supported.
839 * @tx_params: TX parameters
840 */
841 struct ieee80211_mcs_info {
842 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
843 __le16 rx_highest;
844 u8 tx_params;
845 u8 reserved[3];
846 } __attribute__((packed));
847
848 /* 802.11n HT capability MSC set */
849 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
850 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
851 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
852 /* value 0 == 1 stream etc */
853 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
854 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
855 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
856 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
857
858 /*
859 * 802.11n D5.0 20.3.5 / 20.6 says:
860 * - indices 0 to 7 and 32 are single spatial stream
861 * - 8 to 31 are multiple spatial streams using equal modulation
862 * [8..15 for two streams, 16..23 for three and 24..31 for four]
863 * - remainder are multiple spatial streams using unequal modulation
864 */
865 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
866 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
867 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
868
869 /**
870 * struct ieee80211_ht_cap - HT capabilities
871 *
872 * This structure is the "HT capabilities element" as
873 * described in 802.11n D5.0 7.3.2.57
874 */
875 struct ieee80211_ht_cap {
876 __le16 cap_info;
877 u8 ampdu_params_info;
878
879 /* 16 bytes MCS information */
880 struct ieee80211_mcs_info mcs;
881
882 __le16 extended_ht_cap_info;
883 __le32 tx_BF_cap_info;
884 u8 antenna_selection_info;
885 } __attribute__ ((packed));
886
887 /* 802.11n HT capabilities masks (for cap_info) */
888 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
889 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
890 #define IEEE80211_HT_CAP_SM_PS 0x000C
891 #define IEEE80211_HT_CAP_SM_PS_SHIFT 2
892 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
893 #define IEEE80211_HT_CAP_SGI_20 0x0020
894 #define IEEE80211_HT_CAP_SGI_40 0x0040
895 #define IEEE80211_HT_CAP_TX_STBC 0x0080
896 #define IEEE80211_HT_CAP_RX_STBC 0x0300
897 #define IEEE80211_HT_CAP_RX_STBC_SHIFT 8
898 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
899 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
900 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
901 #define IEEE80211_HT_CAP_RESERVED 0x2000
902 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
903 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
904
905 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
906 #define IEEE80211_HT_EXT_CAP_PCO 0x0001
907 #define IEEE80211_HT_EXT_CAP_PCO_TIME 0x0006
908 #define IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT 1
909 #define IEEE80211_HT_EXT_CAP_MCS_FB 0x0300
910 #define IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT 8
911 #define IEEE80211_HT_EXT_CAP_HTC_SUP 0x0400
912 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER 0x0800
913
914 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
915 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
916 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
917 #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2
918
919 /*
920 * Maximum length of AMPDU that the STA can receive.
921 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
922 */
923 enum ieee80211_max_ampdu_length_exp {
924 IEEE80211_HT_MAX_AMPDU_8K = 0,
925 IEEE80211_HT_MAX_AMPDU_16K = 1,
926 IEEE80211_HT_MAX_AMPDU_32K = 2,
927 IEEE80211_HT_MAX_AMPDU_64K = 3
928 };
929
930 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
931
932 /* Minimum MPDU start spacing */
933 enum ieee80211_min_mpdu_spacing {
934 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */
935 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */
936 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */
937 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */
938 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */
939 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */
940 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */
941 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */
942 };
943
944 /**
945 * struct ieee80211_ht_info - HT information
946 *
947 * This structure is the "HT information element" as
948 * described in 802.11n D5.0 7.3.2.58
949 */
950 struct ieee80211_ht_info {
951 u8 control_chan;
952 u8 ht_param;
953 __le16 operation_mode;
954 __le16 stbc_param;
955 u8 basic_set[16];
956 } __attribute__ ((packed));
957
958 /* for ht_param */
959 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
960 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
961 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
962 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
963 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
964 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
965 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
966 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
967
968 /* for operation_mode */
969 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
970 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
971 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
972 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
973 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
974 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
975 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
976
977 /* for stbc_param */
978 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
979 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
980 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
981 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
982 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
983 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
984
985
986 /* block-ack parameters */
987 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
988 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
989 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
990 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
991 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
992
993 /*
994 * A-PMDU buffer sizes
995 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
996 */
997 #define IEEE80211_MIN_AMPDU_BUF 0x8
998 #define IEEE80211_MAX_AMPDU_BUF 0x40
999
1000
1001 /* Spatial Multiplexing Power Save Modes (for capability) */
1002 #define WLAN_HT_CAP_SM_PS_STATIC 0
1003 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
1004 #define WLAN_HT_CAP_SM_PS_INVALID 2
1005 #define WLAN_HT_CAP_SM_PS_DISABLED 3
1006
1007 /* for SM power control field lower two bits */
1008 #define WLAN_HT_SMPS_CONTROL_DISABLED 0
1009 #define WLAN_HT_SMPS_CONTROL_STATIC 1
1010 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3
1011
1012 /* Authentication algorithms */
1013 #define WLAN_AUTH_OPEN 0
1014 #define WLAN_AUTH_SHARED_KEY 1
1015 #define WLAN_AUTH_FT 2
1016 #define WLAN_AUTH_SAE 3
1017 #define WLAN_AUTH_LEAP 128
1018
1019 #define WLAN_AUTH_CHALLENGE_LEN 128
1020
1021 #define WLAN_CAPABILITY_ESS (1<<0)
1022 #define WLAN_CAPABILITY_IBSS (1<<1)
1023
1024 /*
1025 * A mesh STA sets the ESS and IBSS capability bits to zero.
1026 * however, this holds true for p2p probe responses (in the p2p_find
1027 * phase) as well.
1028 */
1029 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1030 (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1031
1032 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
1033 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1034 #define WLAN_CAPABILITY_PRIVACY (1<<4)
1035 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
1036 #define WLAN_CAPABILITY_PBCC (1<<6)
1037 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1038
1039 /* 802.11h */
1040 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
1041 #define WLAN_CAPABILITY_QOS (1<<9)
1042 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1043 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
1044 /* measurement */
1045 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
1046 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
1047 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
1048
1049 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
1050 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
1051 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
1052
1053
1054 /* 802.11g ERP information element */
1055 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1056 #define WLAN_ERP_USE_PROTECTION (1<<1)
1057 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1058
1059 /* WLAN_ERP_BARKER_PREAMBLE values */
1060 enum {
1061 WLAN_ERP_PREAMBLE_SHORT = 0,
1062 WLAN_ERP_PREAMBLE_LONG = 1,
1063 };
1064
1065 /* Status codes */
1066 enum ieee80211_statuscode {
1067 WLAN_STATUS_SUCCESS = 0,
1068 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1069 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1070 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1071 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1072 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1073 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1074 WLAN_STATUS_CHALLENGE_FAIL = 15,
1075 WLAN_STATUS_AUTH_TIMEOUT = 16,
1076 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1077 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1078 /* 802.11b */
1079 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1080 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1081 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1082 /* 802.11h */
1083 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1084 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1085 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1086 /* 802.11g */
1087 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1088 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1089 /* 802.11w */
1090 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1091 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1092 /* 802.11i */
1093 WLAN_STATUS_INVALID_IE = 40,
1094 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1095 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1096 WLAN_STATUS_INVALID_AKMP = 43,
1097 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1098 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1099 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1100 /* 802.11e */
1101 WLAN_STATUS_UNSPECIFIED_QOS = 32,
1102 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1103 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1104 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1105 WLAN_STATUS_REQUEST_DECLINED = 37,
1106 WLAN_STATUS_INVALID_QOS_PARAM = 38,
1107 WLAN_STATUS_CHANGE_TSPEC = 39,
1108 WLAN_STATUS_WAIT_TS_DELAY = 47,
1109 WLAN_STATUS_NO_DIRECT_LINK = 48,
1110 WLAN_STATUS_STA_NOT_PRESENT = 49,
1111 WLAN_STATUS_STA_NOT_QSTA = 50,
1112 /* 802.11s */
1113 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1114 WLAN_STATUS_FCG_NOT_SUPP = 78,
1115 WLAN_STATUS_STA_NO_TBTT = 78,
1116 };
1117
1118
1119 /* Reason codes */
1120 enum ieee80211_reasoncode {
1121 WLAN_REASON_UNSPECIFIED = 1,
1122 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1123 WLAN_REASON_DEAUTH_LEAVING = 3,
1124 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1125 WLAN_REASON_DISASSOC_AP_BUSY = 5,
1126 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1127 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1128 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1129 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1130 /* 802.11h */
1131 WLAN_REASON_DISASSOC_BAD_POWER = 10,
1132 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1133 /* 802.11i */
1134 WLAN_REASON_INVALID_IE = 13,
1135 WLAN_REASON_MIC_FAILURE = 14,
1136 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1137 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1138 WLAN_REASON_IE_DIFFERENT = 17,
1139 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1140 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1141 WLAN_REASON_INVALID_AKMP = 20,
1142 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1143 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1144 WLAN_REASON_IEEE8021X_FAILED = 23,
1145 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1146 /* 802.11e */
1147 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1148 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1149 WLAN_REASON_DISASSOC_LOW_ACK = 34,
1150 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1151 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1152 WLAN_REASON_QSTA_NOT_USE = 37,
1153 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1154 WLAN_REASON_QSTA_TIMEOUT = 39,
1155 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1156 /* 802.11s */
1157 WLAN_REASON_MESH_PEER_CANCELED = 52,
1158 WLAN_REASON_MESH_MAX_PEERS = 53,
1159 WLAN_REASON_MESH_CONFIG = 54,
1160 WLAN_REASON_MESH_CLOSE = 55,
1161 WLAN_REASON_MESH_MAX_RETRIES = 56,
1162 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1163 WLAN_REASON_MESH_INVALID_GTK = 58,
1164 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1165 WLAN_REASON_MESH_INVALID_SECURITY = 60,
1166 WLAN_REASON_MESH_PATH_ERROR = 61,
1167 WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1168 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1169 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1170 WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1171 WLAN_REASON_MESH_CHAN = 66,
1172 };
1173
1174
1175 /* Information Element IDs */
1176 enum ieee80211_eid {
1177 WLAN_EID_SSID = 0,
1178 WLAN_EID_SUPP_RATES = 1,
1179 WLAN_EID_FH_PARAMS = 2,
1180 WLAN_EID_DS_PARAMS = 3,
1181 WLAN_EID_CF_PARAMS = 4,
1182 WLAN_EID_TIM = 5,
1183 WLAN_EID_IBSS_PARAMS = 6,
1184 WLAN_EID_CHALLENGE = 16,
1185
1186 WLAN_EID_COUNTRY = 7,
1187 WLAN_EID_HP_PARAMS = 8,
1188 WLAN_EID_HP_TABLE = 9,
1189 WLAN_EID_REQUEST = 10,
1190
1191 WLAN_EID_QBSS_LOAD = 11,
1192 WLAN_EID_EDCA_PARAM_SET = 12,
1193 WLAN_EID_TSPEC = 13,
1194 WLAN_EID_TCLAS = 14,
1195 WLAN_EID_SCHEDULE = 15,
1196 WLAN_EID_TS_DELAY = 43,
1197 WLAN_EID_TCLAS_PROCESSING = 44,
1198 WLAN_EID_QOS_CAPA = 46,
1199 /* 802.11s */
1200 WLAN_EID_MESH_CONFIG = 113,
1201 WLAN_EID_MESH_ID = 114,
1202 WLAN_EID_LINK_METRIC_REPORT = 115,
1203 WLAN_EID_CONGESTION_NOTIFICATION = 116,
1204 WLAN_EID_PEER_MGMT = 117,
1205 WLAN_EID_CHAN_SWITCH_PARAM = 118,
1206 WLAN_EID_MESH_AWAKE_WINDOW = 119,
1207 WLAN_EID_BEACON_TIMING = 120,
1208 WLAN_EID_MCCAOP_SETUP_REQ = 121,
1209 WLAN_EID_MCCAOP_SETUP_RESP = 122,
1210 WLAN_EID_MCCAOP_ADVERT = 123,
1211 WLAN_EID_MCCAOP_TEARDOWN = 124,
1212 WLAN_EID_GANN = 125,
1213 WLAN_EID_RANN = 126,
1214 WLAN_EID_PREQ = 130,
1215 WLAN_EID_PREP = 131,
1216 WLAN_EID_PERR = 132,
1217 WLAN_EID_PXU = 137,
1218 WLAN_EID_PXUC = 138,
1219 WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1220 WLAN_EID_MIC = 140,
1221
1222 WLAN_EID_PWR_CONSTRAINT = 32,
1223 WLAN_EID_PWR_CAPABILITY = 33,
1224 WLAN_EID_TPC_REQUEST = 34,
1225 WLAN_EID_TPC_REPORT = 35,
1226 WLAN_EID_SUPPORTED_CHANNELS = 36,
1227 WLAN_EID_CHANNEL_SWITCH = 37,
1228 WLAN_EID_MEASURE_REQUEST = 38,
1229 WLAN_EID_MEASURE_REPORT = 39,
1230 WLAN_EID_QUIET = 40,
1231 WLAN_EID_IBSS_DFS = 41,
1232
1233 WLAN_EID_ERP_INFO = 42,
1234 WLAN_EID_EXT_SUPP_RATES = 50,
1235
1236 WLAN_EID_HT_CAPABILITY = 45,
1237 WLAN_EID_HT_INFORMATION = 61,
1238
1239 WLAN_EID_RSN = 48,
1240 WLAN_EID_MMIE = 76,
1241 WLAN_EID_WPA = 221,
1242 WLAN_EID_GENERIC = 221,
1243 WLAN_EID_VENDOR_SPECIFIC = 221,
1244 WLAN_EID_QOS_PARAMETER = 222,
1245
1246 WLAN_EID_AP_CHAN_REPORT = 51,
1247 WLAN_EID_NEIGHBOR_REPORT = 52,
1248 WLAN_EID_RCPI = 53,
1249 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1250 WLAN_EID_ANTENNA_INFO = 64,
1251 WLAN_EID_RSNI = 65,
1252 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1253 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1254 WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1255 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1256 WLAN_EID_MULTIPLE_BSSID = 71,
1257 WLAN_EID_BSS_COEX_2040 = 72,
1258 WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1259 WLAN_EID_EXT_CAPABILITY = 127,
1260
1261 WLAN_EID_MOBILITY_DOMAIN = 54,
1262 WLAN_EID_FAST_BSS_TRANSITION = 55,
1263 WLAN_EID_TIMEOUT_INTERVAL = 56,
1264 WLAN_EID_RIC_DATA = 57,
1265 WLAN_EID_RIC_DESCRIPTOR = 75,
1266
1267 WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1268 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1269 WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1270 };
1271
1272 /* Action category code */
1273 enum ieee80211_category {
1274 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1275 WLAN_CATEGORY_QOS = 1,
1276 WLAN_CATEGORY_DLS = 2,
1277 WLAN_CATEGORY_BACK = 3,
1278 WLAN_CATEGORY_PUBLIC = 4,
1279 WLAN_CATEGORY_HT = 7,
1280 WLAN_CATEGORY_SA_QUERY = 8,
1281 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1282 WLAN_CATEGORY_MESH_ACTION = 13,
1283 WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1284 WLAN_CATEGORY_SELF_PROTECTED = 15,
1285 WLAN_CATEGORY_WMM = 17,
1286 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1287 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1288 };
1289
1290 /* SPECTRUM_MGMT action code */
1291 enum ieee80211_spectrum_mgmt_actioncode {
1292 WLAN_ACTION_SPCT_MSR_REQ = 0,
1293 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1294 WLAN_ACTION_SPCT_TPC_REQ = 2,
1295 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1296 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1297 };
1298
1299 /* HT action codes */
1300 enum ieee80211_ht_actioncode {
1301 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1302 WLAN_HT_ACTION_SMPS = 1,
1303 WLAN_HT_ACTION_PSMP = 2,
1304 WLAN_HT_ACTION_PCO_PHASE = 3,
1305 WLAN_HT_ACTION_CSI = 4,
1306 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1307 WLAN_HT_ACTION_COMPRESSED_BF = 6,
1308 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1309 };
1310
1311 /* Self Protected Action codes */
1312 enum ieee80211_self_protected_actioncode {
1313 WLAN_SP_RESERVED = 0,
1314 WLAN_SP_MESH_PEERING_OPEN = 1,
1315 WLAN_SP_MESH_PEERING_CONFIRM = 2,
1316 WLAN_SP_MESH_PEERING_CLOSE = 3,
1317 WLAN_SP_MGK_INFORM = 4,
1318 WLAN_SP_MGK_ACK = 5,
1319 };
1320
1321 /* Mesh action codes */
1322 enum ieee80211_mesh_actioncode {
1323 WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1324 WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1325 WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1326 WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1327 WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1328 WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1329 WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1330 WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1331 WLAN_MESH_ACTION_MCCA_TEARDOWN,
1332 WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1333 WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1334 };
1335
1336 /* Security key length */
1337 enum ieee80211_key_len {
1338 WLAN_KEY_LEN_WEP40 = 5,
1339 WLAN_KEY_LEN_WEP104 = 13,
1340 WLAN_KEY_LEN_CCMP = 16,
1341 WLAN_KEY_LEN_TKIP = 32,
1342 WLAN_KEY_LEN_AES_CMAC = 16,
1343 };
1344
1345 /**
1346 * enum - mesh path selection protocol identifier
1347 *
1348 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1349 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1350 * be specified in a vendor specific information element
1351 */
1352 enum {
1353 IEEE80211_PATH_PROTOCOL_HWMP = 0,
1354 IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1355 };
1356
1357 /**
1358 * enum - mesh path selection metric identifier
1359 *
1360 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1361 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1362 * specified in a vendor specific information element
1363 */
1364 enum {
1365 IEEE80211_PATH_METRIC_AIRTIME = 0,
1366 IEEE80211_PATH_METRIC_VENDOR = 255,
1367 };
1368
1369
1370 /*
1371 * IEEE 802.11-2007 7.3.2.9 Country information element
1372 *
1373 * Minimum length is 8 octets, ie len must be evenly
1374 * divisible by 2
1375 */
1376
1377 /* Although the spec says 8 I'm seeing 6 in practice */
1378 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1379
1380 /* The Country String field of the element shall be 3 octets in length */
1381 #define IEEE80211_COUNTRY_STRING_LEN 3
1382
1383 /*
1384 * For regulatory extension stuff see IEEE 802.11-2007
1385 * Annex I (page 1141) and Annex J (page 1147). Also
1386 * review 7.3.2.9.
1387 *
1388 * When dot11RegulatoryClassesRequired is true and the
1389 * first_channel/reg_extension_id is >= 201 then the IE
1390 * compromises of the 'ext' struct represented below:
1391 *
1392 * - Regulatory extension ID - when generating IE this just needs
1393 * to be monotonically increasing for each triplet passed in
1394 * the IE
1395 * - Regulatory class - index into set of rules
1396 * - Coverage class - index into air propagation time (Table 7-27),
1397 * in microseconds, you can compute the air propagation time from
1398 * the index by multiplying by 3, so index 10 yields a propagation
1399 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1400 * yet. A value of 0 inicates air propagation of <= 1 us.
1401 *
1402 * See also Table I.2 for Emission limit sets and table
1403 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1404 * a reg_class to an emission limit set and behavior limit set.
1405 */
1406 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1407
1408 /*
1409 * Channels numbers in the IE must be monotonically increasing
1410 * if dot11RegulatoryClassesRequired is not true.
1411 *
1412 * If dot11RegulatoryClassesRequired is true consecutive
1413 * subband triplets following a regulatory triplet shall
1414 * have monotonically increasing first_channel number fields.
1415 *
1416 * Channel numbers shall not overlap.
1417 *
1418 * Note that max_power is signed.
1419 */
1420 struct ieee80211_country_ie_triplet {
1421 union {
1422 struct {
1423 u8 first_channel;
1424 u8 num_channels;
1425 s8 max_power;
1426 } __attribute__ ((packed)) chans;
1427 struct {
1428 u8 reg_extension_id;
1429 u8 reg_class;
1430 u8 coverage_class;
1431 } __attribute__ ((packed)) ext;
1432 };
1433 } __attribute__ ((packed));
1434
1435 enum ieee80211_timeout_interval_type {
1436 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1437 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1438 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1439 };
1440
1441 /* BACK action code */
1442 enum ieee80211_back_actioncode {
1443 WLAN_ACTION_ADDBA_REQ = 0,
1444 WLAN_ACTION_ADDBA_RESP = 1,
1445 WLAN_ACTION_DELBA = 2,
1446 };
1447
1448 /* BACK (block-ack) parties */
1449 enum ieee80211_back_parties {
1450 WLAN_BACK_RECIPIENT = 0,
1451 WLAN_BACK_INITIATOR = 1,
1452 };
1453
1454 /* SA Query action */
1455 enum ieee80211_sa_query_action {
1456 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1457 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1458 };
1459
1460
1461 /* cipher suite selectors */
1462 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1463 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1464 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1465 /* reserved: 0x000FAC03 */
1466 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1467 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1468 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1469
1470 /* AKM suite selectors */
1471 #define WLAN_AKM_SUITE_8021X 0x000FAC01
1472 #define WLAN_AKM_SUITE_PSK 0x000FAC02
1473 #define WLAN_AKM_SUITE_SAE 0x000FAC08
1474 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09
1475
1476 #define WLAN_MAX_KEY_LEN 32
1477
1478 #define WLAN_PMKID_LEN 16
1479
1480 #define WLAN_OUI_WFA 0x506f9a
1481 #define WLAN_OUI_TYPE_WFA_P2P 9
1482
1483 /*
1484 * WMM/802.11e Tspec Element
1485 */
1486 #define IEEE80211_WMM_IE_TSPEC_TID_MASK 0x0F
1487 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT 1
1488
1489 enum ieee80211_tspec_status_code {
1490 IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1491 IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1492 };
1493
1494 struct ieee80211_tspec_ie {
1495 u8 element_id;
1496 u8 len;
1497 u8 oui[3];
1498 u8 oui_type;
1499 u8 oui_subtype;
1500 u8 version;
1501 __le16 tsinfo;
1502 u8 tsinfo_resvd;
1503 __le16 nominal_msdu;
1504 __le16 max_msdu;
1505 __le32 min_service_int;
1506 __le32 max_service_int;
1507 __le32 inactivity_int;
1508 __le32 suspension_int;
1509 __le32 service_start_time;
1510 __le32 min_data_rate;
1511 __le32 mean_data_rate;
1512 __le32 peak_data_rate;
1513 __le32 max_burst_size;
1514 __le32 delay_bound;
1515 __le32 min_phy_rate;
1516 __le16 sba;
1517 __le16 medium_time;
1518 } __packed;
1519
1520 /**
1521 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1522 * @hdr: the frame
1523 *
1524 * The qos ctrl bytes come after the frame_control, duration, seq_num
1525 * and 3 or 4 addresses of length ETH_ALEN.
1526 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1527 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1528 */
1529 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1530 {
1531 if (ieee80211_has_a4(hdr->frame_control))
1532 return (u8 *)hdr + 30;
1533 else
1534 return (u8 *)hdr + 24;
1535 }
1536
1537 /**
1538 * ieee80211_get_SA - get pointer to SA
1539 * @hdr: the frame
1540 *
1541 * Given an 802.11 frame, this function returns the offset
1542 * to the source address (SA). It does not verify that the
1543 * header is long enough to contain the address, and the
1544 * header must be long enough to contain the frame control
1545 * field.
1546 */
1547 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1548 {
1549 if (ieee80211_has_a4(hdr->frame_control))
1550 return hdr->addr4;
1551 if (ieee80211_has_fromds(hdr->frame_control))
1552 return hdr->addr3;
1553 return hdr->addr2;
1554 }
1555
1556 /**
1557 * ieee80211_get_DA - get pointer to DA
1558 * @hdr: the frame
1559 *
1560 * Given an 802.11 frame, this function returns the offset
1561 * to the destination address (DA). It does not verify that
1562 * the header is long enough to contain the address, and the
1563 * header must be long enough to contain the frame control
1564 * field.
1565 */
1566 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1567 {
1568 if (ieee80211_has_tods(hdr->frame_control))
1569 return hdr->addr3;
1570 else
1571 return hdr->addr1;
1572 }
1573
1574 /**
1575 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1576 * @hdr: the frame (buffer must include at least the first octet of payload)
1577 */
1578 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1579 {
1580 if (ieee80211_is_disassoc(hdr->frame_control) ||
1581 ieee80211_is_deauth(hdr->frame_control))
1582 return true;
1583
1584 if (ieee80211_is_action(hdr->frame_control)) {
1585 u8 *category;
1586
1587 /*
1588 * Action frames, excluding Public Action frames, are Robust
1589 * Management Frames. However, if we are looking at a Protected
1590 * frame, skip the check since the data may be encrypted and
1591 * the frame has already been found to be a Robust Management
1592 * Frame (by the other end).
1593 */
1594 if (ieee80211_has_protected(hdr->frame_control))
1595 return true;
1596 category = ((u8 *) hdr) + 24;
1597 return *category != WLAN_CATEGORY_PUBLIC &&
1598 *category != WLAN_CATEGORY_HT &&
1599 *category != WLAN_CATEGORY_SELF_PROTECTED &&
1600 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1601 }
1602
1603 return false;
1604 }
1605
1606 /**
1607 * ieee80211_fhss_chan_to_freq - get channel frequency
1608 * @channel: the FHSS channel
1609 *
1610 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1611 * Ref IEEE 802.11-2007 section 14.6
1612 */
1613 static inline int ieee80211_fhss_chan_to_freq(int channel)
1614 {
1615 if ((channel > 1) && (channel < 96))
1616 return channel + 2400;
1617 else
1618 return -1;
1619 }
1620
1621 /**
1622 * ieee80211_freq_to_fhss_chan - get channel
1623 * @freq: the channels frequency
1624 *
1625 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1626 * Ref IEEE 802.11-2007 section 14.6
1627 */
1628 static inline int ieee80211_freq_to_fhss_chan(int freq)
1629 {
1630 if ((freq > 2401) && (freq < 2496))
1631 return freq - 2400;
1632 else
1633 return -1;
1634 }
1635
1636 /**
1637 * ieee80211_dsss_chan_to_freq - get channel center frequency
1638 * @channel: the DSSS channel
1639 *
1640 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1641 * Ref IEEE 802.11-2007 section 15.6
1642 */
1643 static inline int ieee80211_dsss_chan_to_freq(int channel)
1644 {
1645 if ((channel > 0) && (channel < 14))
1646 return 2407 + (channel * 5);
1647 else if (channel == 14)
1648 return 2484;
1649 else
1650 return -1;
1651 }
1652
1653 /**
1654 * ieee80211_freq_to_dsss_chan - get channel
1655 * @freq: the frequency
1656 *
1657 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1658 * Ref IEEE 802.11-2007 section 15.6
1659 *
1660 * This routine selects the channel with the closest center frequency.
1661 */
1662 static inline int ieee80211_freq_to_dsss_chan(int freq)
1663 {
1664 if ((freq >= 2410) && (freq < 2475))
1665 return (freq - 2405) / 5;
1666 else if ((freq >= 2482) && (freq < 2487))
1667 return 14;
1668 else
1669 return -1;
1670 }
1671
1672 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1673 * Ref IEEE 802.11-2007 section 18.4.6.2
1674 *
1675 * The channels and frequencies are the same as those defined for DSSS
1676 */
1677 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1678 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1679
1680 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1681 * Ref IEEE 802.11-2007 section 19.4.2
1682 */
1683 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1684 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1685
1686 /**
1687 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1688 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1689 * @channel: the OFDM channel
1690 *
1691 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1692 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1693 */
1694 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1695 {
1696 if ((channel > 0) && (channel <= 200) &&
1697 (s_freq >= 4000))
1698 return s_freq + (channel * 5);
1699 else
1700 return -1;
1701 }
1702
1703 /**
1704 * ieee80211_freq_to_ofdm_channel - get channel
1705 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1706 * @freq: the frequency
1707 *
1708 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1709 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1710 *
1711 * This routine selects the channel with the closest center frequency.
1712 */
1713 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1714 {
1715 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1716 (s_freq >= 4000))
1717 return (freq + 2 - s_freq) / 5;
1718 else
1719 return -1;
1720 }
1721
1722 /**
1723 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1724 * @tu: the TUs
1725 */
1726 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1727 {
1728 return 1024 * tu;
1729 }
1730
1731 /**
1732 * ieee80211_check_tim - check if AID bit is set in TIM
1733 * @tim: the TIM IE
1734 * @tim_len: length of the TIM IE
1735 * @aid: the AID to look for
1736 */
1737 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1738 u8 tim_len, u16 aid)
1739 {
1740 u8 mask;
1741 u8 index, indexn1, indexn2;
1742
1743 if (unlikely(!tim || tim_len < sizeof(*tim)))
1744 return false;
1745
1746 aid &= 0x3fff;
1747 index = aid / 8;
1748 mask = 1 << (aid & 7);
1749
1750 indexn1 = tim->bitmap_ctrl & 0xfe;
1751 indexn2 = tim_len + indexn1 - 4;
1752
1753 if (index < indexn1 || index > indexn2)
1754 return false;
1755
1756 index -= indexn1;
1757
1758 return !!(tim->virtual_map[index] & mask);
1759 }
1760
1761 #endif /* LINUX_IEEE80211_H */
Linux kernel - Deliverables
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