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1 /*
2 * IEEE 802.11 defines
3 *
4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
5 * <jkmaline@cc.hut.fi>
6 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
7 * Copyright (c) 2005, Devicescape Software, Inc.
8 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
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 #define IEEE80211_QOS_CTL_TID_MASK 0x000F
121 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
122
123 /* U-APSD queue for WMM IEs sent by AP */
124 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7)
125 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f
126
127 /* U-APSD queues for WMM IEs sent by STA */
128 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0)
129 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1)
130 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2)
131 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3)
132 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f
133
134 /* U-APSD max SP length for WMM IEs sent by STA */
135 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00
136 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01
137 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02
138 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03
139 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03
140 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5
141
142 #define IEEE80211_HT_CTL_LEN 4
143
144 struct ieee80211_hdr {
145 __le16 frame_control;
146 __le16 duration_id;
147 u8 addr1[6];
148 u8 addr2[6];
149 u8 addr3[6];
150 __le16 seq_ctrl;
151 u8 addr4[6];
152 } __attribute__ ((packed));
153
154 struct ieee80211_hdr_3addr {
155 __le16 frame_control;
156 __le16 duration_id;
157 u8 addr1[6];
158 u8 addr2[6];
159 u8 addr3[6];
160 __le16 seq_ctrl;
161 } __attribute__ ((packed));
162
163 struct ieee80211_qos_hdr {
164 __le16 frame_control;
165 __le16 duration_id;
166 u8 addr1[6];
167 u8 addr2[6];
168 u8 addr3[6];
169 __le16 seq_ctrl;
170 __le16 qos_ctrl;
171 } __attribute__ ((packed));
172
173 /**
174 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
175 * @fc: frame control bytes in little-endian byteorder
176 */
177 static inline int ieee80211_has_tods(__le16 fc)
178 {
179 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
180 }
181
182 /**
183 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
184 * @fc: frame control bytes in little-endian byteorder
185 */
186 static inline int ieee80211_has_fromds(__le16 fc)
187 {
188 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
189 }
190
191 /**
192 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
193 * @fc: frame control bytes in little-endian byteorder
194 */
195 static inline int ieee80211_has_a4(__le16 fc)
196 {
197 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
198 return (fc & tmp) == tmp;
199 }
200
201 /**
202 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
203 * @fc: frame control bytes in little-endian byteorder
204 */
205 static inline int ieee80211_has_morefrags(__le16 fc)
206 {
207 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
208 }
209
210 /**
211 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
212 * @fc: frame control bytes in little-endian byteorder
213 */
214 static inline int ieee80211_has_retry(__le16 fc)
215 {
216 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
217 }
218
219 /**
220 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
221 * @fc: frame control bytes in little-endian byteorder
222 */
223 static inline int ieee80211_has_pm(__le16 fc)
224 {
225 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
226 }
227
228 /**
229 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
230 * @fc: frame control bytes in little-endian byteorder
231 */
232 static inline int ieee80211_has_moredata(__le16 fc)
233 {
234 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
235 }
236
237 /**
238 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
239 * @fc: frame control bytes in little-endian byteorder
240 */
241 static inline int ieee80211_has_protected(__le16 fc)
242 {
243 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
244 }
245
246 /**
247 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
248 * @fc: frame control bytes in little-endian byteorder
249 */
250 static inline int ieee80211_has_order(__le16 fc)
251 {
252 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
253 }
254
255 /**
256 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
257 * @fc: frame control bytes in little-endian byteorder
258 */
259 static inline int ieee80211_is_mgmt(__le16 fc)
260 {
261 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
262 cpu_to_le16(IEEE80211_FTYPE_MGMT);
263 }
264
265 /**
266 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
267 * @fc: frame control bytes in little-endian byteorder
268 */
269 static inline int ieee80211_is_ctl(__le16 fc)
270 {
271 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
272 cpu_to_le16(IEEE80211_FTYPE_CTL);
273 }
274
275 /**
276 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
277 * @fc: frame control bytes in little-endian byteorder
278 */
279 static inline int ieee80211_is_data(__le16 fc)
280 {
281 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
282 cpu_to_le16(IEEE80211_FTYPE_DATA);
283 }
284
285 /**
286 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
287 * @fc: frame control bytes in little-endian byteorder
288 */
289 static inline int ieee80211_is_data_qos(__le16 fc)
290 {
291 /*
292 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
293 * to check the one bit
294 */
295 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
296 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
297 }
298
299 /**
300 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
301 * @fc: frame control bytes in little-endian byteorder
302 */
303 static inline int ieee80211_is_data_present(__le16 fc)
304 {
305 /*
306 * mask with 0x40 and test that that bit is clear to only return true
307 * for the data-containing substypes.
308 */
309 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
310 cpu_to_le16(IEEE80211_FTYPE_DATA);
311 }
312
313 /**
314 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
315 * @fc: frame control bytes in little-endian byteorder
316 */
317 static inline int ieee80211_is_assoc_req(__le16 fc)
318 {
319 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
320 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
321 }
322
323 /**
324 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
325 * @fc: frame control bytes in little-endian byteorder
326 */
327 static inline int ieee80211_is_assoc_resp(__le16 fc)
328 {
329 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
330 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
331 }
332
333 /**
334 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
335 * @fc: frame control bytes in little-endian byteorder
336 */
337 static inline int ieee80211_is_reassoc_req(__le16 fc)
338 {
339 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
340 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
341 }
342
343 /**
344 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
345 * @fc: frame control bytes in little-endian byteorder
346 */
347 static inline int ieee80211_is_reassoc_resp(__le16 fc)
348 {
349 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
350 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
351 }
352
353 /**
354 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
355 * @fc: frame control bytes in little-endian byteorder
356 */
357 static inline int ieee80211_is_probe_req(__le16 fc)
358 {
359 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
360 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
361 }
362
363 /**
364 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
365 * @fc: frame control bytes in little-endian byteorder
366 */
367 static inline int ieee80211_is_probe_resp(__le16 fc)
368 {
369 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
370 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
371 }
372
373 /**
374 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
375 * @fc: frame control bytes in little-endian byteorder
376 */
377 static inline int ieee80211_is_beacon(__le16 fc)
378 {
379 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
380 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
381 }
382
383 /**
384 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
385 * @fc: frame control bytes in little-endian byteorder
386 */
387 static inline int ieee80211_is_atim(__le16 fc)
388 {
389 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
390 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
391 }
392
393 /**
394 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
395 * @fc: frame control bytes in little-endian byteorder
396 */
397 static inline int ieee80211_is_disassoc(__le16 fc)
398 {
399 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
400 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
401 }
402
403 /**
404 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
405 * @fc: frame control bytes in little-endian byteorder
406 */
407 static inline int ieee80211_is_auth(__le16 fc)
408 {
409 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
410 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
411 }
412
413 /**
414 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
415 * @fc: frame control bytes in little-endian byteorder
416 */
417 static inline int ieee80211_is_deauth(__le16 fc)
418 {
419 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
420 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
421 }
422
423 /**
424 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
425 * @fc: frame control bytes in little-endian byteorder
426 */
427 static inline int ieee80211_is_action(__le16 fc)
428 {
429 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
430 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
431 }
432
433 /**
434 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
435 * @fc: frame control bytes in little-endian byteorder
436 */
437 static inline int ieee80211_is_back_req(__le16 fc)
438 {
439 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
440 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
441 }
442
443 /**
444 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
445 * @fc: frame control bytes in little-endian byteorder
446 */
447 static inline int ieee80211_is_back(__le16 fc)
448 {
449 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
450 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
451 }
452
453 /**
454 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
455 * @fc: frame control bytes in little-endian byteorder
456 */
457 static inline int ieee80211_is_pspoll(__le16 fc)
458 {
459 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
460 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
461 }
462
463 /**
464 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
465 * @fc: frame control bytes in little-endian byteorder
466 */
467 static inline int ieee80211_is_rts(__le16 fc)
468 {
469 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
470 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
471 }
472
473 /**
474 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
475 * @fc: frame control bytes in little-endian byteorder
476 */
477 static inline int ieee80211_is_cts(__le16 fc)
478 {
479 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
480 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
481 }
482
483 /**
484 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
485 * @fc: frame control bytes in little-endian byteorder
486 */
487 static inline int ieee80211_is_ack(__le16 fc)
488 {
489 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
490 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
491 }
492
493 /**
494 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
495 * @fc: frame control bytes in little-endian byteorder
496 */
497 static inline int ieee80211_is_cfend(__le16 fc)
498 {
499 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
500 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
501 }
502
503 /**
504 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
505 * @fc: frame control bytes in little-endian byteorder
506 */
507 static inline int ieee80211_is_cfendack(__le16 fc)
508 {
509 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
510 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
511 }
512
513 /**
514 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
515 * @fc: frame control bytes in little-endian byteorder
516 */
517 static inline int ieee80211_is_nullfunc(__le16 fc)
518 {
519 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
520 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
521 }
522
523 /**
524 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
525 * @fc: frame control bytes in little-endian byteorder
526 */
527 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
528 {
529 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
530 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
531 }
532
533 struct ieee80211s_hdr {
534 u8 flags;
535 u8 ttl;
536 __le32 seqnum;
537 u8 eaddr1[6];
538 u8 eaddr2[6];
539 } __attribute__ ((packed));
540
541 /* Mesh flags */
542 #define MESH_FLAGS_AE_A4 0x1
543 #define MESH_FLAGS_AE_A5_A6 0x2
544 #define MESH_FLAGS_AE 0x3
545 #define MESH_FLAGS_PS_DEEP 0x4
546
547 /**
548 * struct ieee80211_quiet_ie
549 *
550 * This structure refers to "Quiet information element"
551 */
552 struct ieee80211_quiet_ie {
553 u8 count;
554 u8 period;
555 __le16 duration;
556 __le16 offset;
557 } __attribute__ ((packed));
558
559 /**
560 * struct ieee80211_msrment_ie
561 *
562 * This structure refers to "Measurement Request/Report information element"
563 */
564 struct ieee80211_msrment_ie {
565 u8 token;
566 u8 mode;
567 u8 type;
568 u8 request[0];
569 } __attribute__ ((packed));
570
571 /**
572 * struct ieee80211_channel_sw_ie
573 *
574 * This structure refers to "Channel Switch Announcement information element"
575 */
576 struct ieee80211_channel_sw_ie {
577 u8 mode;
578 u8 new_ch_num;
579 u8 count;
580 } __attribute__ ((packed));
581
582 /**
583 * struct ieee80211_tim
584 *
585 * This structure refers to "Traffic Indication Map information element"
586 */
587 struct ieee80211_tim_ie {
588 u8 dtim_count;
589 u8 dtim_period;
590 u8 bitmap_ctrl;
591 /* variable size: 1 - 251 bytes */
592 u8 virtual_map[1];
593 } __attribute__ ((packed));
594
595 /**
596 * struct ieee80211_meshconf_ie
597 *
598 * This structure refers to "Mesh Configuration information element"
599 */
600 struct ieee80211_meshconf_ie {
601 u8 meshconf_psel;
602 u8 meshconf_pmetric;
603 u8 meshconf_congest;
604 u8 meshconf_synch;
605 u8 meshconf_auth;
606 u8 meshconf_form;
607 u8 meshconf_cap;
608 } __attribute__ ((packed));
609
610 /**
611 * struct ieee80211_rann_ie
612 *
613 * This structure refers to "Root Announcement information element"
614 */
615 struct ieee80211_rann_ie {
616 u8 rann_flags;
617 u8 rann_hopcount;
618 u8 rann_ttl;
619 u8 rann_addr[6];
620 u32 rann_seq;
621 u32 rann_metric;
622 } __attribute__ ((packed));
623
624 #define WLAN_SA_QUERY_TR_ID_LEN 2
625
626 struct ieee80211_mgmt {
627 __le16 frame_control;
628 __le16 duration;
629 u8 da[6];
630 u8 sa[6];
631 u8 bssid[6];
632 __le16 seq_ctrl;
633 union {
634 struct {
635 __le16 auth_alg;
636 __le16 auth_transaction;
637 __le16 status_code;
638 /* possibly followed by Challenge text */
639 u8 variable[0];
640 } __attribute__ ((packed)) auth;
641 struct {
642 __le16 reason_code;
643 } __attribute__ ((packed)) deauth;
644 struct {
645 __le16 capab_info;
646 __le16 listen_interval;
647 /* followed by SSID and Supported rates */
648 u8 variable[0];
649 } __attribute__ ((packed)) assoc_req;
650 struct {
651 __le16 capab_info;
652 __le16 status_code;
653 __le16 aid;
654 /* followed by Supported rates */
655 u8 variable[0];
656 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
657 struct {
658 __le16 capab_info;
659 __le16 listen_interval;
660 u8 current_ap[6];
661 /* followed by SSID and Supported rates */
662 u8 variable[0];
663 } __attribute__ ((packed)) reassoc_req;
664 struct {
665 __le16 reason_code;
666 } __attribute__ ((packed)) disassoc;
667 struct {
668 __le64 timestamp;
669 __le16 beacon_int;
670 __le16 capab_info;
671 /* followed by some of SSID, Supported rates,
672 * FH Params, DS Params, CF Params, IBSS Params, TIM */
673 u8 variable[0];
674 } __attribute__ ((packed)) beacon;
675 struct {
676 /* only variable items: SSID, Supported rates */
677 u8 variable[0];
678 } __attribute__ ((packed)) probe_req;
679 struct {
680 __le64 timestamp;
681 __le16 beacon_int;
682 __le16 capab_info;
683 /* followed by some of SSID, Supported rates,
684 * FH Params, DS Params, CF Params, IBSS Params */
685 u8 variable[0];
686 } __attribute__ ((packed)) probe_resp;
687 struct {
688 u8 category;
689 union {
690 struct {
691 u8 action_code;
692 u8 dialog_token;
693 u8 status_code;
694 u8 variable[0];
695 } __attribute__ ((packed)) wme_action;
696 struct{
697 u8 action_code;
698 u8 element_id;
699 u8 length;
700 struct ieee80211_channel_sw_ie sw_elem;
701 } __attribute__((packed)) chan_switch;
702 struct{
703 u8 action_code;
704 u8 dialog_token;
705 u8 element_id;
706 u8 length;
707 struct ieee80211_msrment_ie msr_elem;
708 } __attribute__((packed)) measurement;
709 struct{
710 u8 action_code;
711 u8 dialog_token;
712 __le16 capab;
713 __le16 timeout;
714 __le16 start_seq_num;
715 } __attribute__((packed)) addba_req;
716 struct{
717 u8 action_code;
718 u8 dialog_token;
719 __le16 status;
720 __le16 capab;
721 __le16 timeout;
722 } __attribute__((packed)) addba_resp;
723 struct{
724 u8 action_code;
725 __le16 params;
726 __le16 reason_code;
727 } __attribute__((packed)) delba;
728 struct{
729 u8 action_code;
730 /* capab_info for open and confirm,
731 * reason for close
732 */
733 __le16 aux;
734 /* Followed in plink_confirm by status
735 * code, AID and supported rates,
736 * and directly by supported rates in
737 * plink_open and plink_close
738 */
739 u8 variable[0];
740 } __attribute__((packed)) plink_action;
741 struct{
742 u8 action_code;
743 u8 variable[0];
744 } __attribute__((packed)) mesh_action;
745 struct {
746 u8 action;
747 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
748 } __attribute__ ((packed)) sa_query;
749 struct {
750 u8 action;
751 u8 smps_control;
752 } __attribute__ ((packed)) ht_smps;
753 } u;
754 } __attribute__ ((packed)) action;
755 } u;
756 } __attribute__ ((packed));
757
758 /* mgmt header + 1 byte category code */
759 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
760
761
762 /* Management MIC information element (IEEE 802.11w) */
763 struct ieee80211_mmie {
764 u8 element_id;
765 u8 length;
766 __le16 key_id;
767 u8 sequence_number[6];
768 u8 mic[8];
769 } __attribute__ ((packed));
770
771 /* Control frames */
772 struct ieee80211_rts {
773 __le16 frame_control;
774 __le16 duration;
775 u8 ra[6];
776 u8 ta[6];
777 } __attribute__ ((packed));
778
779 struct ieee80211_cts {
780 __le16 frame_control;
781 __le16 duration;
782 u8 ra[6];
783 } __attribute__ ((packed));
784
785 struct ieee80211_pspoll {
786 __le16 frame_control;
787 __le16 aid;
788 u8 bssid[6];
789 u8 ta[6];
790 } __attribute__ ((packed));
791
792 /**
793 * struct ieee80211_bar - HT Block Ack Request
794 *
795 * This structure refers to "HT BlockAckReq" as
796 * described in 802.11n draft section 7.2.1.7.1
797 */
798 struct ieee80211_bar {
799 __le16 frame_control;
800 __le16 duration;
801 __u8 ra[6];
802 __u8 ta[6];
803 __le16 control;
804 __le16 start_seq_num;
805 } __attribute__((packed));
806
807 /* 802.11 BAR control masks */
808 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
809 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
810
811
812 #define IEEE80211_HT_MCS_MASK_LEN 10
813
814 /**
815 * struct ieee80211_mcs_info - MCS information
816 * @rx_mask: RX mask
817 * @rx_highest: highest supported RX rate. If set represents
818 * the highest supported RX data rate in units of 1 Mbps.
819 * If this field is 0 this value should not be used to
820 * consider the highest RX data rate supported.
821 * @tx_params: TX parameters
822 */
823 struct ieee80211_mcs_info {
824 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
825 __le16 rx_highest;
826 u8 tx_params;
827 u8 reserved[3];
828 } __attribute__((packed));
829
830 /* 802.11n HT capability MSC set */
831 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
832 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
833 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
834 /* value 0 == 1 stream etc */
835 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
836 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
837 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
838 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
839
840 /*
841 * 802.11n D5.0 20.3.5 / 20.6 says:
842 * - indices 0 to 7 and 32 are single spatial stream
843 * - 8 to 31 are multiple spatial streams using equal modulation
844 * [8..15 for two streams, 16..23 for three and 24..31 for four]
845 * - remainder are multiple spatial streams using unequal modulation
846 */
847 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
848 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
849 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
850
851 /**
852 * struct ieee80211_ht_cap - HT capabilities
853 *
854 * This structure is the "HT capabilities element" as
855 * described in 802.11n D5.0 7.3.2.57
856 */
857 struct ieee80211_ht_cap {
858 __le16 cap_info;
859 u8 ampdu_params_info;
860
861 /* 16 bytes MCS information */
862 struct ieee80211_mcs_info mcs;
863
864 __le16 extended_ht_cap_info;
865 __le32 tx_BF_cap_info;
866 u8 antenna_selection_info;
867 } __attribute__ ((packed));
868
869 /* 802.11n HT capabilities masks (for cap_info) */
870 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
871 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
872 #define IEEE80211_HT_CAP_SM_PS 0x000C
873 #define IEEE80211_HT_CAP_SM_PS_SHIFT 2
874 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
875 #define IEEE80211_HT_CAP_SGI_20 0x0020
876 #define IEEE80211_HT_CAP_SGI_40 0x0040
877 #define IEEE80211_HT_CAP_TX_STBC 0x0080
878 #define IEEE80211_HT_CAP_RX_STBC 0x0300
879 #define IEEE80211_HT_CAP_RX_STBC_SHIFT 8
880 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
881 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
882 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
883 #define IEEE80211_HT_CAP_RESERVED 0x2000
884 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
885 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
886
887 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
888 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
889 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
890 #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2
891
892 /*
893 * Maximum length of AMPDU that the STA can receive.
894 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
895 */
896 enum ieee80211_max_ampdu_length_exp {
897 IEEE80211_HT_MAX_AMPDU_8K = 0,
898 IEEE80211_HT_MAX_AMPDU_16K = 1,
899 IEEE80211_HT_MAX_AMPDU_32K = 2,
900 IEEE80211_HT_MAX_AMPDU_64K = 3
901 };
902
903 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
904
905 /* Minimum MPDU start spacing */
906 enum ieee80211_min_mpdu_spacing {
907 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */
908 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */
909 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */
910 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */
911 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */
912 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */
913 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */
914 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */
915 };
916
917 /**
918 * struct ieee80211_ht_info - HT information
919 *
920 * This structure is the "HT information element" as
921 * described in 802.11n D5.0 7.3.2.58
922 */
923 struct ieee80211_ht_info {
924 u8 control_chan;
925 u8 ht_param;
926 __le16 operation_mode;
927 __le16 stbc_param;
928 u8 basic_set[16];
929 } __attribute__ ((packed));
930
931 /* for ht_param */
932 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
933 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
934 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
935 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
936 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
937 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
938 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
939 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
940
941 /* for operation_mode */
942 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
943 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
944 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
945 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
946 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
947 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
948 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
949
950 /* for stbc_param */
951 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
952 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
953 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
954 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
955 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
956 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
957
958
959 /* block-ack parameters */
960 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
961 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
962 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
963 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
964 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
965
966 /*
967 * A-PMDU buffer sizes
968 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
969 */
970 #define IEEE80211_MIN_AMPDU_BUF 0x8
971 #define IEEE80211_MAX_AMPDU_BUF 0x40
972
973
974 /* Spatial Multiplexing Power Save Modes (for capability) */
975 #define WLAN_HT_CAP_SM_PS_STATIC 0
976 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
977 #define WLAN_HT_CAP_SM_PS_INVALID 2
978 #define WLAN_HT_CAP_SM_PS_DISABLED 3
979
980 /* for SM power control field lower two bits */
981 #define WLAN_HT_SMPS_CONTROL_DISABLED 0
982 #define WLAN_HT_SMPS_CONTROL_STATIC 1
983 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3
984
985 /* Authentication algorithms */
986 #define WLAN_AUTH_OPEN 0
987 #define WLAN_AUTH_SHARED_KEY 1
988 #define WLAN_AUTH_FT 2
989 #define WLAN_AUTH_SAE 3
990 #define WLAN_AUTH_LEAP 128
991
992 #define WLAN_AUTH_CHALLENGE_LEN 128
993
994 #define WLAN_CAPABILITY_ESS (1<<0)
995 #define WLAN_CAPABILITY_IBSS (1<<1)
996 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
997 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
998 #define WLAN_CAPABILITY_PRIVACY (1<<4)
999 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
1000 #define WLAN_CAPABILITY_PBCC (1<<6)
1001 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1002
1003 /* 802.11h */
1004 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
1005 #define WLAN_CAPABILITY_QOS (1<<9)
1006 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1007 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
1008 /* measurement */
1009 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
1010 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
1011 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
1012
1013 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
1014 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
1015 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
1016
1017
1018 /* 802.11g ERP information element */
1019 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1020 #define WLAN_ERP_USE_PROTECTION (1<<1)
1021 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1022
1023 /* WLAN_ERP_BARKER_PREAMBLE values */
1024 enum {
1025 WLAN_ERP_PREAMBLE_SHORT = 0,
1026 WLAN_ERP_PREAMBLE_LONG = 1,
1027 };
1028
1029 /* Status codes */
1030 enum ieee80211_statuscode {
1031 WLAN_STATUS_SUCCESS = 0,
1032 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1033 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1034 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1035 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1036 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1037 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1038 WLAN_STATUS_CHALLENGE_FAIL = 15,
1039 WLAN_STATUS_AUTH_TIMEOUT = 16,
1040 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1041 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1042 /* 802.11b */
1043 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1044 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1045 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1046 /* 802.11h */
1047 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1048 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1049 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1050 /* 802.11g */
1051 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1052 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1053 /* 802.11w */
1054 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1055 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1056 /* 802.11i */
1057 WLAN_STATUS_INVALID_IE = 40,
1058 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1059 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1060 WLAN_STATUS_INVALID_AKMP = 43,
1061 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1062 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1063 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1064 /* 802.11e */
1065 WLAN_STATUS_UNSPECIFIED_QOS = 32,
1066 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1067 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1068 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1069 WLAN_STATUS_REQUEST_DECLINED = 37,
1070 WLAN_STATUS_INVALID_QOS_PARAM = 38,
1071 WLAN_STATUS_CHANGE_TSPEC = 39,
1072 WLAN_STATUS_WAIT_TS_DELAY = 47,
1073 WLAN_STATUS_NO_DIRECT_LINK = 48,
1074 WLAN_STATUS_STA_NOT_PRESENT = 49,
1075 WLAN_STATUS_STA_NOT_QSTA = 50,
1076 /* 802.11s */
1077 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1078 WLAN_STATUS_FCG_NOT_SUPP = 78,
1079 WLAN_STATUS_STA_NO_TBTT = 78,
1080 };
1081
1082
1083 /* Reason codes */
1084 enum ieee80211_reasoncode {
1085 WLAN_REASON_UNSPECIFIED = 1,
1086 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1087 WLAN_REASON_DEAUTH_LEAVING = 3,
1088 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1089 WLAN_REASON_DISASSOC_AP_BUSY = 5,
1090 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1091 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1092 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1093 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1094 /* 802.11h */
1095 WLAN_REASON_DISASSOC_BAD_POWER = 10,
1096 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1097 /* 802.11i */
1098 WLAN_REASON_INVALID_IE = 13,
1099 WLAN_REASON_MIC_FAILURE = 14,
1100 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1101 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1102 WLAN_REASON_IE_DIFFERENT = 17,
1103 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1104 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1105 WLAN_REASON_INVALID_AKMP = 20,
1106 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1107 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1108 WLAN_REASON_IEEE8021X_FAILED = 23,
1109 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1110 /* 802.11e */
1111 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1112 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1113 WLAN_REASON_DISASSOC_LOW_ACK = 34,
1114 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1115 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1116 WLAN_REASON_QSTA_NOT_USE = 37,
1117 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1118 WLAN_REASON_QSTA_TIMEOUT = 39,
1119 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1120 /* 802.11s */
1121 WLAN_REASON_MESH_PEER_CANCELED = 52,
1122 WLAN_REASON_MESH_MAX_PEERS = 53,
1123 WLAN_REASON_MESH_CONFIG = 54,
1124 WLAN_REASON_MESH_CLOSE = 55,
1125 WLAN_REASON_MESH_MAX_RETRIES = 56,
1126 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1127 WLAN_REASON_MESH_INVALID_GTK = 58,
1128 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1129 WLAN_REASON_MESH_INVALID_SECURITY = 60,
1130 WLAN_REASON_MESH_PATH_ERROR = 61,
1131 WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1132 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1133 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1134 WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1135 WLAN_REASON_MESH_CHAN = 66,
1136 };
1137
1138
1139 /* Information Element IDs */
1140 enum ieee80211_eid {
1141 WLAN_EID_SSID = 0,
1142 WLAN_EID_SUPP_RATES = 1,
1143 WLAN_EID_FH_PARAMS = 2,
1144 WLAN_EID_DS_PARAMS = 3,
1145 WLAN_EID_CF_PARAMS = 4,
1146 WLAN_EID_TIM = 5,
1147 WLAN_EID_IBSS_PARAMS = 6,
1148 WLAN_EID_CHALLENGE = 16,
1149
1150 WLAN_EID_COUNTRY = 7,
1151 WLAN_EID_HP_PARAMS = 8,
1152 WLAN_EID_HP_TABLE = 9,
1153 WLAN_EID_REQUEST = 10,
1154
1155 WLAN_EID_QBSS_LOAD = 11,
1156 WLAN_EID_EDCA_PARAM_SET = 12,
1157 WLAN_EID_TSPEC = 13,
1158 WLAN_EID_TCLAS = 14,
1159 WLAN_EID_SCHEDULE = 15,
1160 WLAN_EID_TS_DELAY = 43,
1161 WLAN_EID_TCLAS_PROCESSING = 44,
1162 WLAN_EID_QOS_CAPA = 46,
1163 /* 802.11s */
1164 WLAN_EID_MESH_CONFIG = 113,
1165 WLAN_EID_MESH_ID = 114,
1166 WLAN_EID_LINK_METRIC_REPORT = 115,
1167 WLAN_EID_CONGESTION_NOTIFICATION = 116,
1168 /* Note that the Peer Link IE has been replaced with the similar
1169 * Peer Management IE. We will keep the former definition until mesh
1170 * code is changed to comply with latest 802.11s drafts.
1171 */
1172 WLAN_EID_PEER_LINK = 55, /* no longer in 802.11s drafts */
1173 WLAN_EID_PEER_MGMT = 117,
1174 WLAN_EID_CHAN_SWITCH_PARAM = 118,
1175 WLAN_EID_MESH_AWAKE_WINDOW = 119,
1176 WLAN_EID_BEACON_TIMING = 120,
1177 WLAN_EID_MCCAOP_SETUP_REQ = 121,
1178 WLAN_EID_MCCAOP_SETUP_RESP = 122,
1179 WLAN_EID_MCCAOP_ADVERT = 123,
1180 WLAN_EID_MCCAOP_TEARDOWN = 124,
1181 WLAN_EID_GANN = 125,
1182 WLAN_EID_RANN = 126,
1183 WLAN_EID_PREQ = 130,
1184 WLAN_EID_PREP = 131,
1185 WLAN_EID_PERR = 132,
1186 WLAN_EID_PXU = 137,
1187 WLAN_EID_PXUC = 138,
1188 WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1189 WLAN_EID_MIC = 140,
1190
1191 WLAN_EID_PWR_CONSTRAINT = 32,
1192 WLAN_EID_PWR_CAPABILITY = 33,
1193 WLAN_EID_TPC_REQUEST = 34,
1194 WLAN_EID_TPC_REPORT = 35,
1195 WLAN_EID_SUPPORTED_CHANNELS = 36,
1196 WLAN_EID_CHANNEL_SWITCH = 37,
1197 WLAN_EID_MEASURE_REQUEST = 38,
1198 WLAN_EID_MEASURE_REPORT = 39,
1199 WLAN_EID_QUIET = 40,
1200 WLAN_EID_IBSS_DFS = 41,
1201
1202 WLAN_EID_ERP_INFO = 42,
1203 WLAN_EID_EXT_SUPP_RATES = 50,
1204
1205 WLAN_EID_HT_CAPABILITY = 45,
1206 WLAN_EID_HT_INFORMATION = 61,
1207
1208 WLAN_EID_RSN = 48,
1209 WLAN_EID_MMIE = 76,
1210 WLAN_EID_WPA = 221,
1211 WLAN_EID_GENERIC = 221,
1212 WLAN_EID_VENDOR_SPECIFIC = 221,
1213 WLAN_EID_QOS_PARAMETER = 222,
1214
1215 WLAN_EID_AP_CHAN_REPORT = 51,
1216 WLAN_EID_NEIGHBOR_REPORT = 52,
1217 WLAN_EID_RCPI = 53,
1218 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1219 WLAN_EID_ANTENNA_INFO = 64,
1220 WLAN_EID_RSNI = 65,
1221 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1222 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1223 WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1224 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1225 WLAN_EID_MULTIPLE_BSSID = 71,
1226 WLAN_EID_BSS_COEX_2040 = 72,
1227 WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1228 WLAN_EID_EXT_CAPABILITY = 127,
1229
1230 WLAN_EID_MOBILITY_DOMAIN = 54,
1231 WLAN_EID_FAST_BSS_TRANSITION = 55,
1232 WLAN_EID_TIMEOUT_INTERVAL = 56,
1233 WLAN_EID_RIC_DATA = 57,
1234 WLAN_EID_RIC_DESCRIPTOR = 75,
1235
1236 WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1237 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1238 WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1239 };
1240
1241 /* Action category code */
1242 enum ieee80211_category {
1243 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1244 WLAN_CATEGORY_QOS = 1,
1245 WLAN_CATEGORY_DLS = 2,
1246 WLAN_CATEGORY_BACK = 3,
1247 WLAN_CATEGORY_PUBLIC = 4,
1248 WLAN_CATEGORY_HT = 7,
1249 WLAN_CATEGORY_SA_QUERY = 8,
1250 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1251 WLAN_CATEGORY_MESH_ACTION = 13,
1252 WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1253 WLAN_CATEGORY_SELF_PROTECTED = 15,
1254 WLAN_CATEGORY_WMM = 17,
1255 /* TODO: remove MESH_PLINK and MESH_PATH_SEL after */
1256 /* mesh is updated to current 802.11s draft */
1257 WLAN_CATEGORY_MESH_PLINK = 30,
1258 WLAN_CATEGORY_MESH_PATH_SEL = 32,
1259 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1260 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1261 };
1262
1263 /* SPECTRUM_MGMT action code */
1264 enum ieee80211_spectrum_mgmt_actioncode {
1265 WLAN_ACTION_SPCT_MSR_REQ = 0,
1266 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1267 WLAN_ACTION_SPCT_TPC_REQ = 2,
1268 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1269 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1270 };
1271
1272 /* HT action codes */
1273 enum ieee80211_ht_actioncode {
1274 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1275 WLAN_HT_ACTION_SMPS = 1,
1276 WLAN_HT_ACTION_PSMP = 2,
1277 WLAN_HT_ACTION_PCO_PHASE = 3,
1278 WLAN_HT_ACTION_CSI = 4,
1279 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1280 WLAN_HT_ACTION_COMPRESSED_BF = 6,
1281 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1282 };
1283
1284 /* Security key length */
1285 enum ieee80211_key_len {
1286 WLAN_KEY_LEN_WEP40 = 5,
1287 WLAN_KEY_LEN_WEP104 = 13,
1288 WLAN_KEY_LEN_CCMP = 16,
1289 WLAN_KEY_LEN_TKIP = 32,
1290 WLAN_KEY_LEN_AES_CMAC = 16,
1291 };
1292
1293 /**
1294 * enum - mesh path selection protocol identifier
1295 *
1296 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1297 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1298 * be specified in a vendor specific information element
1299 */
1300 enum {
1301 IEEE80211_PATH_PROTOCOL_HWMP = 0,
1302 IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1303 };
1304
1305 /**
1306 * enum - mesh path selection metric identifier
1307 *
1308 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1309 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1310 * specified in a vendor specific information element
1311 */
1312 enum {
1313 IEEE80211_PATH_METRIC_AIRTIME = 0,
1314 IEEE80211_PATH_METRIC_VENDOR = 255,
1315 };
1316
1317
1318 /*
1319 * IEEE 802.11-2007 7.3.2.9 Country information element
1320 *
1321 * Minimum length is 8 octets, ie len must be evenly
1322 * divisible by 2
1323 */
1324
1325 /* Although the spec says 8 I'm seeing 6 in practice */
1326 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1327
1328 /*
1329 * For regulatory extension stuff see IEEE 802.11-2007
1330 * Annex I (page 1141) and Annex J (page 1147). Also
1331 * review 7.3.2.9.
1332 *
1333 * When dot11RegulatoryClassesRequired is true and the
1334 * first_channel/reg_extension_id is >= 201 then the IE
1335 * compromises of the 'ext' struct represented below:
1336 *
1337 * - Regulatory extension ID - when generating IE this just needs
1338 * to be monotonically increasing for each triplet passed in
1339 * the IE
1340 * - Regulatory class - index into set of rules
1341 * - Coverage class - index into air propagation time (Table 7-27),
1342 * in microseconds, you can compute the air propagation time from
1343 * the index by multiplying by 3, so index 10 yields a propagation
1344 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1345 * yet. A value of 0 inicates air propagation of <= 1 us.
1346 *
1347 * See also Table I.2 for Emission limit sets and table
1348 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1349 * a reg_class to an emission limit set and behavior limit set.
1350 */
1351 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1352
1353 /*
1354 * Channels numbers in the IE must be monotonically increasing
1355 * if dot11RegulatoryClassesRequired is not true.
1356 *
1357 * If dot11RegulatoryClassesRequired is true consecutive
1358 * subband triplets following a regulatory triplet shall
1359 * have monotonically increasing first_channel number fields.
1360 *
1361 * Channel numbers shall not overlap.
1362 *
1363 * Note that max_power is signed.
1364 */
1365 struct ieee80211_country_ie_triplet {
1366 union {
1367 struct {
1368 u8 first_channel;
1369 u8 num_channels;
1370 s8 max_power;
1371 } __attribute__ ((packed)) chans;
1372 struct {
1373 u8 reg_extension_id;
1374 u8 reg_class;
1375 u8 coverage_class;
1376 } __attribute__ ((packed)) ext;
1377 };
1378 } __attribute__ ((packed));
1379
1380 enum ieee80211_timeout_interval_type {
1381 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1382 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1383 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1384 };
1385
1386 /* BACK action code */
1387 enum ieee80211_back_actioncode {
1388 WLAN_ACTION_ADDBA_REQ = 0,
1389 WLAN_ACTION_ADDBA_RESP = 1,
1390 WLAN_ACTION_DELBA = 2,
1391 };
1392
1393 /* BACK (block-ack) parties */
1394 enum ieee80211_back_parties {
1395 WLAN_BACK_RECIPIENT = 0,
1396 WLAN_BACK_INITIATOR = 1,
1397 };
1398
1399 /* SA Query action */
1400 enum ieee80211_sa_query_action {
1401 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1402 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1403 };
1404
1405
1406 /* A-MSDU 802.11n */
1407 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1408
1409 /* cipher suite selectors */
1410 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1411 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1412 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1413 /* reserved: 0x000FAC03 */
1414 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1415 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1416 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1417
1418 /* AKM suite selectors */
1419 #define WLAN_AKM_SUITE_8021X 0x000FAC01
1420 #define WLAN_AKM_SUITE_PSK 0x000FAC02
1421 #define WLAN_AKM_SUITE_SAE 0x000FAC08
1422 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09
1423
1424 #define WLAN_MAX_KEY_LEN 32
1425
1426 #define WLAN_PMKID_LEN 16
1427
1428 /**
1429 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1430 * @hdr: the frame
1431 *
1432 * The qos ctrl bytes come after the frame_control, duration, seq_num
1433 * and 3 or 4 addresses of length ETH_ALEN.
1434 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1435 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1436 */
1437 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1438 {
1439 if (ieee80211_has_a4(hdr->frame_control))
1440 return (u8 *)hdr + 30;
1441 else
1442 return (u8 *)hdr + 24;
1443 }
1444
1445 /**
1446 * ieee80211_get_SA - get pointer to SA
1447 * @hdr: the frame
1448 *
1449 * Given an 802.11 frame, this function returns the offset
1450 * to the source address (SA). It does not verify that the
1451 * header is long enough to contain the address, and the
1452 * header must be long enough to contain the frame control
1453 * field.
1454 */
1455 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1456 {
1457 if (ieee80211_has_a4(hdr->frame_control))
1458 return hdr->addr4;
1459 if (ieee80211_has_fromds(hdr->frame_control))
1460 return hdr->addr3;
1461 return hdr->addr2;
1462 }
1463
1464 /**
1465 * ieee80211_get_DA - get pointer to DA
1466 * @hdr: the frame
1467 *
1468 * Given an 802.11 frame, this function returns the offset
1469 * to the destination address (DA). It does not verify that
1470 * the header is long enough to contain the address, and the
1471 * header must be long enough to contain the frame control
1472 * field.
1473 */
1474 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1475 {
1476 if (ieee80211_has_tods(hdr->frame_control))
1477 return hdr->addr3;
1478 else
1479 return hdr->addr1;
1480 }
1481
1482 /**
1483 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1484 * @hdr: the frame (buffer must include at least the first octet of payload)
1485 */
1486 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1487 {
1488 if (ieee80211_is_disassoc(hdr->frame_control) ||
1489 ieee80211_is_deauth(hdr->frame_control))
1490 return true;
1491
1492 if (ieee80211_is_action(hdr->frame_control)) {
1493 u8 *category;
1494
1495 /*
1496 * Action frames, excluding Public Action frames, are Robust
1497 * Management Frames. However, if we are looking at a Protected
1498 * frame, skip the check since the data may be encrypted and
1499 * the frame has already been found to be a Robust Management
1500 * Frame (by the other end).
1501 */
1502 if (ieee80211_has_protected(hdr->frame_control))
1503 return true;
1504 category = ((u8 *) hdr) + 24;
1505 return *category != WLAN_CATEGORY_PUBLIC &&
1506 *category != WLAN_CATEGORY_HT &&
1507 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1508 }
1509
1510 return false;
1511 }
1512
1513 /**
1514 * ieee80211_fhss_chan_to_freq - get channel frequency
1515 * @channel: the FHSS channel
1516 *
1517 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1518 * Ref IEEE 802.11-2007 section 14.6
1519 */
1520 static inline int ieee80211_fhss_chan_to_freq(int channel)
1521 {
1522 if ((channel > 1) && (channel < 96))
1523 return channel + 2400;
1524 else
1525 return -1;
1526 }
1527
1528 /**
1529 * ieee80211_freq_to_fhss_chan - get channel
1530 * @freq: the channels frequency
1531 *
1532 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1533 * Ref IEEE 802.11-2007 section 14.6
1534 */
1535 static inline int ieee80211_freq_to_fhss_chan(int freq)
1536 {
1537 if ((freq > 2401) && (freq < 2496))
1538 return freq - 2400;
1539 else
1540 return -1;
1541 }
1542
1543 /**
1544 * ieee80211_dsss_chan_to_freq - get channel center frequency
1545 * @channel: the DSSS channel
1546 *
1547 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1548 * Ref IEEE 802.11-2007 section 15.6
1549 */
1550 static inline int ieee80211_dsss_chan_to_freq(int channel)
1551 {
1552 if ((channel > 0) && (channel < 14))
1553 return 2407 + (channel * 5);
1554 else if (channel == 14)
1555 return 2484;
1556 else
1557 return -1;
1558 }
1559
1560 /**
1561 * ieee80211_freq_to_dsss_chan - get channel
1562 * @freq: the frequency
1563 *
1564 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1565 * Ref IEEE 802.11-2007 section 15.6
1566 *
1567 * This routine selects the channel with the closest center frequency.
1568 */
1569 static inline int ieee80211_freq_to_dsss_chan(int freq)
1570 {
1571 if ((freq >= 2410) && (freq < 2475))
1572 return (freq - 2405) / 5;
1573 else if ((freq >= 2482) && (freq < 2487))
1574 return 14;
1575 else
1576 return -1;
1577 }
1578
1579 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1580 * Ref IEEE 802.11-2007 section 18.4.6.2
1581 *
1582 * The channels and frequencies are the same as those defined for DSSS
1583 */
1584 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1585 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1586
1587 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1588 * Ref IEEE 802.11-2007 section 19.4.2
1589 */
1590 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1591 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1592
1593 /**
1594 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1595 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1596 * @channel: the OFDM channel
1597 *
1598 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1599 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1600 */
1601 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1602 {
1603 if ((channel > 0) && (channel <= 200) &&
1604 (s_freq >= 4000))
1605 return s_freq + (channel * 5);
1606 else
1607 return -1;
1608 }
1609
1610 /**
1611 * ieee80211_freq_to_ofdm_channel - get channel
1612 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1613 * @freq: the frequency
1614 *
1615 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1616 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1617 *
1618 * This routine selects the channel with the closest center frequency.
1619 */
1620 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1621 {
1622 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1623 (s_freq >= 4000))
1624 return (freq + 2 - s_freq) / 5;
1625 else
1626 return -1;
1627 }
1628
1629 /**
1630 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1631 * @tu: the TUs
1632 */
1633 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1634 {
1635 return 1024 * tu;
1636 }
1637
1638 /**
1639 * ieee80211_check_tim - check if AID bit is set in TIM
1640 * @tim: the TIM IE
1641 * @tim_len: length of the TIM IE
1642 * @aid: the AID to look for
1643 */
1644 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1645 u8 tim_len, u16 aid)
1646 {
1647 u8 mask;
1648 u8 index, indexn1, indexn2;
1649
1650 if (unlikely(!tim || tim_len < sizeof(*tim)))
1651 return false;
1652
1653 aid &= 0x3fff;
1654 index = aid / 8;
1655 mask = 1 << (aid & 7);
1656
1657 indexn1 = tim->bitmap_ctrl & 0xfe;
1658 indexn2 = tim_len + indexn1 - 4;
1659
1660 if (index < indexn1 || index > indexn2)
1661 return false;
1662
1663 index -= indexn1;
1664
1665 return !!(tim->virtual_map[index] & mask);
1666 }
1667
1668 #endif /* LINUX_IEEE80211_H */
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