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[media] gspca - sonixj: Cleanup source and remove useless instructions
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / linux / ieee80211.h
blob54c878960872e47053751b57edd8187295b6fa1f
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
134 /* U-APSD queue for WMM IEs sent by AP */
135 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7)
136 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f
137
138 /* U-APSD queues for WMM IEs sent by STA */
139 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0)
140 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1)
141 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2)
142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3)
143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f
144
145 /* U-APSD max SP length for WMM IEs sent by STA */
146 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00
147 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01
148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02
149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03
150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03
151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5
152
153 #define IEEE80211_HT_CTL_LEN 4
154
155 struct ieee80211_hdr {
156 __le16 frame_control;
157 __le16 duration_id;
158 u8 addr1[6];
159 u8 addr2[6];
160 u8 addr3[6];
161 __le16 seq_ctrl;
162 u8 addr4[6];
163 } __attribute__ ((packed));
164
165 struct ieee80211_hdr_3addr {
166 __le16 frame_control;
167 __le16 duration_id;
168 u8 addr1[6];
169 u8 addr2[6];
170 u8 addr3[6];
171 __le16 seq_ctrl;
172 } __attribute__ ((packed));
173
174 struct ieee80211_qos_hdr {
175 __le16 frame_control;
176 __le16 duration_id;
177 u8 addr1[6];
178 u8 addr2[6];
179 u8 addr3[6];
180 __le16 seq_ctrl;
181 __le16 qos_ctrl;
182 } __attribute__ ((packed));
183
184 /**
185 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
186 * @fc: frame control bytes in little-endian byteorder
187 */
188 static inline int ieee80211_has_tods(__le16 fc)
189 {
190 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
191 }
192
193 /**
194 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
195 * @fc: frame control bytes in little-endian byteorder
196 */
197 static inline int ieee80211_has_fromds(__le16 fc)
198 {
199 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
200 }
201
202 /**
203 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
204 * @fc: frame control bytes in little-endian byteorder
205 */
206 static inline int ieee80211_has_a4(__le16 fc)
207 {
208 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
209 return (fc & tmp) == tmp;
210 }
211
212 /**
213 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
214 * @fc: frame control bytes in little-endian byteorder
215 */
216 static inline int ieee80211_has_morefrags(__le16 fc)
217 {
218 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
219 }
220
221 /**
222 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
223 * @fc: frame control bytes in little-endian byteorder
224 */
225 static inline int ieee80211_has_retry(__le16 fc)
226 {
227 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
228 }
229
230 /**
231 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
232 * @fc: frame control bytes in little-endian byteorder
233 */
234 static inline int ieee80211_has_pm(__le16 fc)
235 {
236 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
237 }
238
239 /**
240 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
241 * @fc: frame control bytes in little-endian byteorder
242 */
243 static inline int ieee80211_has_moredata(__le16 fc)
244 {
245 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
246 }
247
248 /**
249 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
250 * @fc: frame control bytes in little-endian byteorder
251 */
252 static inline int ieee80211_has_protected(__le16 fc)
253 {
254 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
255 }
256
257 /**
258 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
259 * @fc: frame control bytes in little-endian byteorder
260 */
261 static inline int ieee80211_has_order(__le16 fc)
262 {
263 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
264 }
265
266 /**
267 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
268 * @fc: frame control bytes in little-endian byteorder
269 */
270 static inline int ieee80211_is_mgmt(__le16 fc)
271 {
272 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
273 cpu_to_le16(IEEE80211_FTYPE_MGMT);
274 }
275
276 /**
277 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
278 * @fc: frame control bytes in little-endian byteorder
279 */
280 static inline int ieee80211_is_ctl(__le16 fc)
281 {
282 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
283 cpu_to_le16(IEEE80211_FTYPE_CTL);
284 }
285
286 /**
287 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
288 * @fc: frame control bytes in little-endian byteorder
289 */
290 static inline int ieee80211_is_data(__le16 fc)
291 {
292 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
293 cpu_to_le16(IEEE80211_FTYPE_DATA);
294 }
295
296 /**
297 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
298 * @fc: frame control bytes in little-endian byteorder
299 */
300 static inline int ieee80211_is_data_qos(__le16 fc)
301 {
302 /*
303 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
304 * to check the one bit
305 */
306 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
307 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
308 }
309
310 /**
311 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
312 * @fc: frame control bytes in little-endian byteorder
313 */
314 static inline int ieee80211_is_data_present(__le16 fc)
315 {
316 /*
317 * mask with 0x40 and test that that bit is clear to only return true
318 * for the data-containing substypes.
319 */
320 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
321 cpu_to_le16(IEEE80211_FTYPE_DATA);
322 }
323
324 /**
325 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
326 * @fc: frame control bytes in little-endian byteorder
327 */
328 static inline int ieee80211_is_assoc_req(__le16 fc)
329 {
330 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
331 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
332 }
333
334 /**
335 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
336 * @fc: frame control bytes in little-endian byteorder
337 */
338 static inline int ieee80211_is_assoc_resp(__le16 fc)
339 {
340 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
341 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
342 }
343
344 /**
345 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
346 * @fc: frame control bytes in little-endian byteorder
347 */
348 static inline int ieee80211_is_reassoc_req(__le16 fc)
349 {
350 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
351 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
352 }
353
354 /**
355 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
356 * @fc: frame control bytes in little-endian byteorder
357 */
358 static inline int ieee80211_is_reassoc_resp(__le16 fc)
359 {
360 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
361 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
362 }
363
364 /**
365 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
366 * @fc: frame control bytes in little-endian byteorder
367 */
368 static inline int ieee80211_is_probe_req(__le16 fc)
369 {
370 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
371 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
372 }
373
374 /**
375 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
376 * @fc: frame control bytes in little-endian byteorder
377 */
378 static inline int ieee80211_is_probe_resp(__le16 fc)
379 {
380 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
381 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
382 }
383
384 /**
385 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
386 * @fc: frame control bytes in little-endian byteorder
387 */
388 static inline int ieee80211_is_beacon(__le16 fc)
389 {
390 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
391 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
392 }
393
394 /**
395 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
396 * @fc: frame control bytes in little-endian byteorder
397 */
398 static inline int ieee80211_is_atim(__le16 fc)
399 {
400 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
401 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
402 }
403
404 /**
405 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
406 * @fc: frame control bytes in little-endian byteorder
407 */
408 static inline int ieee80211_is_disassoc(__le16 fc)
409 {
410 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
411 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
412 }
413
414 /**
415 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
416 * @fc: frame control bytes in little-endian byteorder
417 */
418 static inline int ieee80211_is_auth(__le16 fc)
419 {
420 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
421 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
422 }
423
424 /**
425 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
426 * @fc: frame control bytes in little-endian byteorder
427 */
428 static inline int ieee80211_is_deauth(__le16 fc)
429 {
430 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
431 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
432 }
433
434 /**
435 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
436 * @fc: frame control bytes in little-endian byteorder
437 */
438 static inline int ieee80211_is_action(__le16 fc)
439 {
440 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
441 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
442 }
443
444 /**
445 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
446 * @fc: frame control bytes in little-endian byteorder
447 */
448 static inline int ieee80211_is_back_req(__le16 fc)
449 {
450 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
451 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
452 }
453
454 /**
455 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
456 * @fc: frame control bytes in little-endian byteorder
457 */
458 static inline int ieee80211_is_back(__le16 fc)
459 {
460 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
461 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
462 }
463
464 /**
465 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
466 * @fc: frame control bytes in little-endian byteorder
467 */
468 static inline int ieee80211_is_pspoll(__le16 fc)
469 {
470 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
471 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
472 }
473
474 /**
475 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
476 * @fc: frame control bytes in little-endian byteorder
477 */
478 static inline int ieee80211_is_rts(__le16 fc)
479 {
480 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
481 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
482 }
483
484 /**
485 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
486 * @fc: frame control bytes in little-endian byteorder
487 */
488 static inline int ieee80211_is_cts(__le16 fc)
489 {
490 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
491 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
492 }
493
494 /**
495 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
496 * @fc: frame control bytes in little-endian byteorder
497 */
498 static inline int ieee80211_is_ack(__le16 fc)
499 {
500 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
501 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
502 }
503
504 /**
505 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
506 * @fc: frame control bytes in little-endian byteorder
507 */
508 static inline int ieee80211_is_cfend(__le16 fc)
509 {
510 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
511 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
512 }
513
514 /**
515 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
516 * @fc: frame control bytes in little-endian byteorder
517 */
518 static inline int ieee80211_is_cfendack(__le16 fc)
519 {
520 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
521 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
522 }
523
524 /**
525 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
526 * @fc: frame control bytes in little-endian byteorder
527 */
528 static inline int ieee80211_is_nullfunc(__le16 fc)
529 {
530 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
531 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
532 }
533
534 /**
535 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
536 * @fc: frame control bytes in little-endian byteorder
537 */
538 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
539 {
540 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
541 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
542 }
543
544 struct ieee80211s_hdr {
545 u8 flags;
546 u8 ttl;
547 __le32 seqnum;
548 u8 eaddr1[6];
549 u8 eaddr2[6];
550 } __attribute__ ((packed));
551
552 /* Mesh flags */
553 #define MESH_FLAGS_AE_A4 0x1
554 #define MESH_FLAGS_AE_A5_A6 0x2
555 #define MESH_FLAGS_AE 0x3
556 #define MESH_FLAGS_PS_DEEP 0x4
557
558 /**
559 * struct ieee80211_quiet_ie
560 *
561 * This structure refers to "Quiet information element"
562 */
563 struct ieee80211_quiet_ie {
564 u8 count;
565 u8 period;
566 __le16 duration;
567 __le16 offset;
568 } __attribute__ ((packed));
569
570 /**
571 * struct ieee80211_msrment_ie
572 *
573 * This structure refers to "Measurement Request/Report information element"
574 */
575 struct ieee80211_msrment_ie {
576 u8 token;
577 u8 mode;
578 u8 type;
579 u8 request[0];
580 } __attribute__ ((packed));
581
582 /**
583 * struct ieee80211_channel_sw_ie
584 *
585 * This structure refers to "Channel Switch Announcement information element"
586 */
587 struct ieee80211_channel_sw_ie {
588 u8 mode;
589 u8 new_ch_num;
590 u8 count;
591 } __attribute__ ((packed));
592
593 /**
594 * struct ieee80211_tim
595 *
596 * This structure refers to "Traffic Indication Map information element"
597 */
598 struct ieee80211_tim_ie {
599 u8 dtim_count;
600 u8 dtim_period;
601 u8 bitmap_ctrl;
602 /* variable size: 1 - 251 bytes */
603 u8 virtual_map[1];
604 } __attribute__ ((packed));
605
606 /**
607 * struct ieee80211_meshconf_ie
608 *
609 * This structure refers to "Mesh Configuration information element"
610 */
611 struct ieee80211_meshconf_ie {
612 u8 meshconf_psel;
613 u8 meshconf_pmetric;
614 u8 meshconf_congest;
615 u8 meshconf_synch;
616 u8 meshconf_auth;
617 u8 meshconf_form;
618 u8 meshconf_cap;
619 } __attribute__ ((packed));
620
621 /**
622 * struct ieee80211_rann_ie
623 *
624 * This structure refers to "Root Announcement information element"
625 */
626 struct ieee80211_rann_ie {
627 u8 rann_flags;
628 u8 rann_hopcount;
629 u8 rann_ttl;
630 u8 rann_addr[6];
631 u32 rann_seq;
632 u32 rann_metric;
633 } __attribute__ ((packed));
634
635 #define WLAN_SA_QUERY_TR_ID_LEN 2
636
637 struct ieee80211_mgmt {
638 __le16 frame_control;
639 __le16 duration;
640 u8 da[6];
641 u8 sa[6];
642 u8 bssid[6];
643 __le16 seq_ctrl;
644 union {
645 struct {
646 __le16 auth_alg;
647 __le16 auth_transaction;
648 __le16 status_code;
649 /* possibly followed by Challenge text */
650 u8 variable[0];
651 } __attribute__ ((packed)) auth;
652 struct {
653 __le16 reason_code;
654 } __attribute__ ((packed)) deauth;
655 struct {
656 __le16 capab_info;
657 __le16 listen_interval;
658 /* followed by SSID and Supported rates */
659 u8 variable[0];
660 } __attribute__ ((packed)) assoc_req;
661 struct {
662 __le16 capab_info;
663 __le16 status_code;
664 __le16 aid;
665 /* followed by Supported rates */
666 u8 variable[0];
667 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
668 struct {
669 __le16 capab_info;
670 __le16 listen_interval;
671 u8 current_ap[6];
672 /* followed by SSID and Supported rates */
673 u8 variable[0];
674 } __attribute__ ((packed)) reassoc_req;
675 struct {
676 __le16 reason_code;
677 } __attribute__ ((packed)) disassoc;
678 struct {
679 __le64 timestamp;
680 __le16 beacon_int;
681 __le16 capab_info;
682 /* followed by some of SSID, Supported rates,
683 * FH Params, DS Params, CF Params, IBSS Params, TIM */
684 u8 variable[0];
685 } __attribute__ ((packed)) beacon;
686 struct {
687 /* only variable items: SSID, Supported rates */
688 u8 variable[0];
689 } __attribute__ ((packed)) probe_req;
690 struct {
691 __le64 timestamp;
692 __le16 beacon_int;
693 __le16 capab_info;
694 /* followed by some of SSID, Supported rates,
695 * FH Params, DS Params, CF Params, IBSS Params */
696 u8 variable[0];
697 } __attribute__ ((packed)) probe_resp;
698 struct {
699 u8 category;
700 union {
701 struct {
702 u8 action_code;
703 u8 dialog_token;
704 u8 status_code;
705 u8 variable[0];
706 } __attribute__ ((packed)) wme_action;
707 struct{
708 u8 action_code;
709 u8 element_id;
710 u8 length;
711 struct ieee80211_channel_sw_ie sw_elem;
712 } __attribute__((packed)) chan_switch;
713 struct{
714 u8 action_code;
715 u8 dialog_token;
716 u8 element_id;
717 u8 length;
718 struct ieee80211_msrment_ie msr_elem;
719 } __attribute__((packed)) measurement;
720 struct{
721 u8 action_code;
722 u8 dialog_token;
723 __le16 capab;
724 __le16 timeout;
725 __le16 start_seq_num;
726 } __attribute__((packed)) addba_req;
727 struct{
728 u8 action_code;
729 u8 dialog_token;
730 __le16 status;
731 __le16 capab;
732 __le16 timeout;
733 } __attribute__((packed)) addba_resp;
734 struct{
735 u8 action_code;
736 __le16 params;
737 __le16 reason_code;
738 } __attribute__((packed)) delba;
739 struct{
740 u8 action_code;
741 /* capab_info for open and confirm,
742 * reason for close
743 */
744 __le16 aux;
745 /* Followed in plink_confirm by status
746 * code, AID and supported rates,
747 * and directly by supported rates in
748 * plink_open and plink_close
749 */
750 u8 variable[0];
751 } __attribute__((packed)) plink_action;
752 struct{
753 u8 action_code;
754 u8 variable[0];
755 } __attribute__((packed)) mesh_action;
756 struct {
757 u8 action;
758 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
759 } __attribute__ ((packed)) sa_query;
760 struct {
761 u8 action;
762 u8 smps_control;
763 } __attribute__ ((packed)) ht_smps;
764 } u;
765 } __attribute__ ((packed)) action;
766 } u;
767 } __attribute__ ((packed));
768
769 /* mgmt header + 1 byte category code */
770 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
771
772
773 /* Management MIC information element (IEEE 802.11w) */
774 struct ieee80211_mmie {
775 u8 element_id;
776 u8 length;
777 __le16 key_id;
778 u8 sequence_number[6];
779 u8 mic[8];
780 } __attribute__ ((packed));
781
782 /* Control frames */
783 struct ieee80211_rts {
784 __le16 frame_control;
785 __le16 duration;
786 u8 ra[6];
787 u8 ta[6];
788 } __attribute__ ((packed));
789
790 struct ieee80211_cts {
791 __le16 frame_control;
792 __le16 duration;
793 u8 ra[6];
794 } __attribute__ ((packed));
795
796 struct ieee80211_pspoll {
797 __le16 frame_control;
798 __le16 aid;
799 u8 bssid[6];
800 u8 ta[6];
801 } __attribute__ ((packed));
802
803 /**
804 * struct ieee80211_bar - HT Block Ack Request
805 *
806 * This structure refers to "HT BlockAckReq" as
807 * described in 802.11n draft section 7.2.1.7.1
808 */
809 struct ieee80211_bar {
810 __le16 frame_control;
811 __le16 duration;
812 __u8 ra[6];
813 __u8 ta[6];
814 __le16 control;
815 __le16 start_seq_num;
816 } __attribute__((packed));
817
818 /* 802.11 BAR control masks */
819 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
820 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
821
822
823 #define IEEE80211_HT_MCS_MASK_LEN 10
824
825 /**
826 * struct ieee80211_mcs_info - MCS information
827 * @rx_mask: RX mask
828 * @rx_highest: highest supported RX rate. If set represents
829 * the highest supported RX data rate in units of 1 Mbps.
830 * If this field is 0 this value should not be used to
831 * consider the highest RX data rate supported.
832 * @tx_params: TX parameters
833 */
834 struct ieee80211_mcs_info {
835 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
836 __le16 rx_highest;
837 u8 tx_params;
838 u8 reserved[3];
839 } __attribute__((packed));
840
841 /* 802.11n HT capability MSC set */
842 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
843 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
844 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
845 /* value 0 == 1 stream etc */
846 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
847 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
848 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
849 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
850
851 /*
852 * 802.11n D5.0 20.3.5 / 20.6 says:
853 * - indices 0 to 7 and 32 are single spatial stream
854 * - 8 to 31 are multiple spatial streams using equal modulation
855 * [8..15 for two streams, 16..23 for three and 24..31 for four]
856 * - remainder are multiple spatial streams using unequal modulation
857 */
858 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
859 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
860 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
861
862 /**
863 * struct ieee80211_ht_cap - HT capabilities
864 *
865 * This structure is the "HT capabilities element" as
866 * described in 802.11n D5.0 7.3.2.57
867 */
868 struct ieee80211_ht_cap {
869 __le16 cap_info;
870 u8 ampdu_params_info;
871
872 /* 16 bytes MCS information */
873 struct ieee80211_mcs_info mcs;
874
875 __le16 extended_ht_cap_info;
876 __le32 tx_BF_cap_info;
877 u8 antenna_selection_info;
878 } __attribute__ ((packed));
879
880 /* 802.11n HT capabilities masks (for cap_info) */
881 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
882 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
883 #define IEEE80211_HT_CAP_SM_PS 0x000C
884 #define IEEE80211_HT_CAP_SM_PS_SHIFT 2
885 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
886 #define IEEE80211_HT_CAP_SGI_20 0x0020
887 #define IEEE80211_HT_CAP_SGI_40 0x0040
888 #define IEEE80211_HT_CAP_TX_STBC 0x0080
889 #define IEEE80211_HT_CAP_RX_STBC 0x0300
890 #define IEEE80211_HT_CAP_RX_STBC_SHIFT 8
891 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
892 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
893 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
894 #define IEEE80211_HT_CAP_RESERVED 0x2000
895 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
896 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
897
898 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
899 #define IEEE80211_HT_EXT_CAP_PCO 0x0001
900 #define IEEE80211_HT_EXT_CAP_PCO_TIME 0x0006
901 #define IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT 1
902 #define IEEE80211_HT_EXT_CAP_MCS_FB 0x0300
903 #define IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT 8
904 #define IEEE80211_HT_EXT_CAP_HTC_SUP 0x0400
905 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER 0x0800
906
907 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
908 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
909 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
910 #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2
911
912 /*
913 * Maximum length of AMPDU that the STA can receive.
914 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
915 */
916 enum ieee80211_max_ampdu_length_exp {
917 IEEE80211_HT_MAX_AMPDU_8K = 0,
918 IEEE80211_HT_MAX_AMPDU_16K = 1,
919 IEEE80211_HT_MAX_AMPDU_32K = 2,
920 IEEE80211_HT_MAX_AMPDU_64K = 3
921 };
922
923 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
924
925 /* Minimum MPDU start spacing */
926 enum ieee80211_min_mpdu_spacing {
927 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */
928 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */
929 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */
930 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */
931 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */
932 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */
933 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */
934 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */
935 };
936
937 /**
938 * struct ieee80211_ht_info - HT information
939 *
940 * This structure is the "HT information element" as
941 * described in 802.11n D5.0 7.3.2.58
942 */
943 struct ieee80211_ht_info {
944 u8 control_chan;
945 u8 ht_param;
946 __le16 operation_mode;
947 __le16 stbc_param;
948 u8 basic_set[16];
949 } __attribute__ ((packed));
950
951 /* for ht_param */
952 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
953 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
954 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
955 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
956 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
957 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
958 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10
959 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0
960
961 /* for operation_mode */
962 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
963 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
964 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
965 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
966 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
967 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
968 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
969
970 /* for stbc_param */
971 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
972 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
973 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
974 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
975 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
976 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
977
978
979 /* block-ack parameters */
980 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
981 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
982 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
983 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
984 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
985
986 /*
987 * A-PMDU buffer sizes
988 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
989 */
990 #define IEEE80211_MIN_AMPDU_BUF 0x8
991 #define IEEE80211_MAX_AMPDU_BUF 0x40
992
993
994 /* Spatial Multiplexing Power Save Modes (for capability) */
995 #define WLAN_HT_CAP_SM_PS_STATIC 0
996 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
997 #define WLAN_HT_CAP_SM_PS_INVALID 2
998 #define WLAN_HT_CAP_SM_PS_DISABLED 3
999
1000 /* for SM power control field lower two bits */
1001 #define WLAN_HT_SMPS_CONTROL_DISABLED 0
1002 #define WLAN_HT_SMPS_CONTROL_STATIC 1
1003 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3
1004
1005 /* Authentication algorithms */
1006 #define WLAN_AUTH_OPEN 0
1007 #define WLAN_AUTH_SHARED_KEY 1
1008 #define WLAN_AUTH_FT 2
1009 #define WLAN_AUTH_SAE 3
1010 #define WLAN_AUTH_LEAP 128
1011
1012 #define WLAN_AUTH_CHALLENGE_LEN 128
1013
1014 #define WLAN_CAPABILITY_ESS (1<<0)
1015 #define WLAN_CAPABILITY_IBSS (1<<1)
1016
1017 /*
1018 * A mesh STA sets the ESS and IBSS capability bits to zero.
1019 * however, this holds true for p2p probe responses (in the p2p_find
1020 * phase) as well.
1021 */
1022 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1023 (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1024
1025 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
1026 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1027 #define WLAN_CAPABILITY_PRIVACY (1<<4)
1028 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
1029 #define WLAN_CAPABILITY_PBCC (1<<6)
1030 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1031
1032 /* 802.11h */
1033 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
1034 #define WLAN_CAPABILITY_QOS (1<<9)
1035 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1036 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
1037 /* measurement */
1038 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
1039 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
1040 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
1041
1042 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
1043 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
1044 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
1045
1046
1047 /* 802.11g ERP information element */
1048 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1049 #define WLAN_ERP_USE_PROTECTION (1<<1)
1050 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1051
1052 /* WLAN_ERP_BARKER_PREAMBLE values */
1053 enum {
1054 WLAN_ERP_PREAMBLE_SHORT = 0,
1055 WLAN_ERP_PREAMBLE_LONG = 1,
1056 };
1057
1058 /* Status codes */
1059 enum ieee80211_statuscode {
1060 WLAN_STATUS_SUCCESS = 0,
1061 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1062 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1063 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1064 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1065 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1066 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1067 WLAN_STATUS_CHALLENGE_FAIL = 15,
1068 WLAN_STATUS_AUTH_TIMEOUT = 16,
1069 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1070 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1071 /* 802.11b */
1072 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1073 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1074 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1075 /* 802.11h */
1076 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1077 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1078 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1079 /* 802.11g */
1080 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1081 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1082 /* 802.11w */
1083 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1084 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1085 /* 802.11i */
1086 WLAN_STATUS_INVALID_IE = 40,
1087 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1088 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1089 WLAN_STATUS_INVALID_AKMP = 43,
1090 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1091 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1092 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1093 /* 802.11e */
1094 WLAN_STATUS_UNSPECIFIED_QOS = 32,
1095 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1096 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1097 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1098 WLAN_STATUS_REQUEST_DECLINED = 37,
1099 WLAN_STATUS_INVALID_QOS_PARAM = 38,
1100 WLAN_STATUS_CHANGE_TSPEC = 39,
1101 WLAN_STATUS_WAIT_TS_DELAY = 47,
1102 WLAN_STATUS_NO_DIRECT_LINK = 48,
1103 WLAN_STATUS_STA_NOT_PRESENT = 49,
1104 WLAN_STATUS_STA_NOT_QSTA = 50,
1105 /* 802.11s */
1106 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1107 WLAN_STATUS_FCG_NOT_SUPP = 78,
1108 WLAN_STATUS_STA_NO_TBTT = 78,
1109 };
1110
1111
1112 /* Reason codes */
1113 enum ieee80211_reasoncode {
1114 WLAN_REASON_UNSPECIFIED = 1,
1115 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1116 WLAN_REASON_DEAUTH_LEAVING = 3,
1117 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1118 WLAN_REASON_DISASSOC_AP_BUSY = 5,
1119 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1120 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1121 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1122 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1123 /* 802.11h */
1124 WLAN_REASON_DISASSOC_BAD_POWER = 10,
1125 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1126 /* 802.11i */
1127 WLAN_REASON_INVALID_IE = 13,
1128 WLAN_REASON_MIC_FAILURE = 14,
1129 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1130 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1131 WLAN_REASON_IE_DIFFERENT = 17,
1132 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1133 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1134 WLAN_REASON_INVALID_AKMP = 20,
1135 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1136 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1137 WLAN_REASON_IEEE8021X_FAILED = 23,
1138 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1139 /* 802.11e */
1140 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1141 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1142 WLAN_REASON_DISASSOC_LOW_ACK = 34,
1143 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1144 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1145 WLAN_REASON_QSTA_NOT_USE = 37,
1146 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1147 WLAN_REASON_QSTA_TIMEOUT = 39,
1148 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1149 /* 802.11s */
1150 WLAN_REASON_MESH_PEER_CANCELED = 52,
1151 WLAN_REASON_MESH_MAX_PEERS = 53,
1152 WLAN_REASON_MESH_CONFIG = 54,
1153 WLAN_REASON_MESH_CLOSE = 55,
1154 WLAN_REASON_MESH_MAX_RETRIES = 56,
1155 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1156 WLAN_REASON_MESH_INVALID_GTK = 58,
1157 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1158 WLAN_REASON_MESH_INVALID_SECURITY = 60,
1159 WLAN_REASON_MESH_PATH_ERROR = 61,
1160 WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1161 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1162 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1163 WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1164 WLAN_REASON_MESH_CHAN = 66,
1165 };
1166
1167
1168 /* Information Element IDs */
1169 enum ieee80211_eid {
1170 WLAN_EID_SSID = 0,
1171 WLAN_EID_SUPP_RATES = 1,
1172 WLAN_EID_FH_PARAMS = 2,
1173 WLAN_EID_DS_PARAMS = 3,
1174 WLAN_EID_CF_PARAMS = 4,
1175 WLAN_EID_TIM = 5,
1176 WLAN_EID_IBSS_PARAMS = 6,
1177 WLAN_EID_CHALLENGE = 16,
1178
1179 WLAN_EID_COUNTRY = 7,
1180 WLAN_EID_HP_PARAMS = 8,
1181 WLAN_EID_HP_TABLE = 9,
1182 WLAN_EID_REQUEST = 10,
1183
1184 WLAN_EID_QBSS_LOAD = 11,
1185 WLAN_EID_EDCA_PARAM_SET = 12,
1186 WLAN_EID_TSPEC = 13,
1187 WLAN_EID_TCLAS = 14,
1188 WLAN_EID_SCHEDULE = 15,
1189 WLAN_EID_TS_DELAY = 43,
1190 WLAN_EID_TCLAS_PROCESSING = 44,
1191 WLAN_EID_QOS_CAPA = 46,
1192 /* 802.11s */
1193 WLAN_EID_MESH_CONFIG = 113,
1194 WLAN_EID_MESH_ID = 114,
1195 WLAN_EID_LINK_METRIC_REPORT = 115,
1196 WLAN_EID_CONGESTION_NOTIFICATION = 116,
1197 /* Note that the Peer Link IE has been replaced with the similar
1198 * Peer Management IE. We will keep the former definition until mesh
1199 * code is changed to comply with latest 802.11s drafts.
1200 */
1201 WLAN_EID_PEER_LINK = 55, /* no longer in 802.11s drafts */
1202 WLAN_EID_PEER_MGMT = 117,
1203 WLAN_EID_CHAN_SWITCH_PARAM = 118,
1204 WLAN_EID_MESH_AWAKE_WINDOW = 119,
1205 WLAN_EID_BEACON_TIMING = 120,
1206 WLAN_EID_MCCAOP_SETUP_REQ = 121,
1207 WLAN_EID_MCCAOP_SETUP_RESP = 122,
1208 WLAN_EID_MCCAOP_ADVERT = 123,
1209 WLAN_EID_MCCAOP_TEARDOWN = 124,
1210 WLAN_EID_GANN = 125,
1211 WLAN_EID_RANN = 126,
1212 WLAN_EID_PREQ = 130,
1213 WLAN_EID_PREP = 131,
1214 WLAN_EID_PERR = 132,
1215 WLAN_EID_PXU = 137,
1216 WLAN_EID_PXUC = 138,
1217 WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1218 WLAN_EID_MIC = 140,
1219
1220 WLAN_EID_PWR_CONSTRAINT = 32,
1221 WLAN_EID_PWR_CAPABILITY = 33,
1222 WLAN_EID_TPC_REQUEST = 34,
1223 WLAN_EID_TPC_REPORT = 35,
1224 WLAN_EID_SUPPORTED_CHANNELS = 36,
1225 WLAN_EID_CHANNEL_SWITCH = 37,
1226 WLAN_EID_MEASURE_REQUEST = 38,
1227 WLAN_EID_MEASURE_REPORT = 39,
1228 WLAN_EID_QUIET = 40,
1229 WLAN_EID_IBSS_DFS = 41,
1230
1231 WLAN_EID_ERP_INFO = 42,
1232 WLAN_EID_EXT_SUPP_RATES = 50,
1233
1234 WLAN_EID_HT_CAPABILITY = 45,
1235 WLAN_EID_HT_INFORMATION = 61,
1236
1237 WLAN_EID_RSN = 48,
1238 WLAN_EID_MMIE = 76,
1239 WLAN_EID_WPA = 221,
1240 WLAN_EID_GENERIC = 221,
1241 WLAN_EID_VENDOR_SPECIFIC = 221,
1242 WLAN_EID_QOS_PARAMETER = 222,
1243
1244 WLAN_EID_AP_CHAN_REPORT = 51,
1245 WLAN_EID_NEIGHBOR_REPORT = 52,
1246 WLAN_EID_RCPI = 53,
1247 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1248 WLAN_EID_ANTENNA_INFO = 64,
1249 WLAN_EID_RSNI = 65,
1250 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1251 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1252 WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1253 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1254 WLAN_EID_MULTIPLE_BSSID = 71,
1255 WLAN_EID_BSS_COEX_2040 = 72,
1256 WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1257 WLAN_EID_EXT_CAPABILITY = 127,
1258
1259 WLAN_EID_MOBILITY_DOMAIN = 54,
1260 WLAN_EID_FAST_BSS_TRANSITION = 55,
1261 WLAN_EID_TIMEOUT_INTERVAL = 56,
1262 WLAN_EID_RIC_DATA = 57,
1263 WLAN_EID_RIC_DESCRIPTOR = 75,
1264
1265 WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1266 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1267 WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1268 };
1269
1270 /* Action category code */
1271 enum ieee80211_category {
1272 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1273 WLAN_CATEGORY_QOS = 1,
1274 WLAN_CATEGORY_DLS = 2,
1275 WLAN_CATEGORY_BACK = 3,
1276 WLAN_CATEGORY_PUBLIC = 4,
1277 WLAN_CATEGORY_HT = 7,
1278 WLAN_CATEGORY_SA_QUERY = 8,
1279 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1280 WLAN_CATEGORY_MESH_ACTION = 13,
1281 WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1282 WLAN_CATEGORY_SELF_PROTECTED = 15,
1283 WLAN_CATEGORY_WMM = 17,
1284 /* TODO: remove MESH_PATH_SEL after mesh is updated
1285 * to current 802.11s draft */
1286 WLAN_CATEGORY_MESH_PATH_SEL = 32,
1287 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1288 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1289 };
1290
1291 /* SPECTRUM_MGMT action code */
1292 enum ieee80211_spectrum_mgmt_actioncode {
1293 WLAN_ACTION_SPCT_MSR_REQ = 0,
1294 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1295 WLAN_ACTION_SPCT_TPC_REQ = 2,
1296 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1297 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1298 };
1299
1300 /* HT action codes */
1301 enum ieee80211_ht_actioncode {
1302 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1303 WLAN_HT_ACTION_SMPS = 1,
1304 WLAN_HT_ACTION_PSMP = 2,
1305 WLAN_HT_ACTION_PCO_PHASE = 3,
1306 WLAN_HT_ACTION_CSI = 4,
1307 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1308 WLAN_HT_ACTION_COMPRESSED_BF = 6,
1309 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1310 };
1311
1312 /* Security key length */
1313 enum ieee80211_key_len {
1314 WLAN_KEY_LEN_WEP40 = 5,
1315 WLAN_KEY_LEN_WEP104 = 13,
1316 WLAN_KEY_LEN_CCMP = 16,
1317 WLAN_KEY_LEN_TKIP = 32,
1318 WLAN_KEY_LEN_AES_CMAC = 16,
1319 };
1320
1321 /**
1322 * enum - mesh path selection protocol identifier
1323 *
1324 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1325 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1326 * be specified in a vendor specific information element
1327 */
1328 enum {
1329 IEEE80211_PATH_PROTOCOL_HWMP = 0,
1330 IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1331 };
1332
1333 /**
1334 * enum - mesh path selection metric identifier
1335 *
1336 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1337 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1338 * specified in a vendor specific information element
1339 */
1340 enum {
1341 IEEE80211_PATH_METRIC_AIRTIME = 0,
1342 IEEE80211_PATH_METRIC_VENDOR = 255,
1343 };
1344
1345
1346 /*
1347 * IEEE 802.11-2007 7.3.2.9 Country information element
1348 *
1349 * Minimum length is 8 octets, ie len must be evenly
1350 * divisible by 2
1351 */
1352
1353 /* Although the spec says 8 I'm seeing 6 in practice */
1354 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1355
1356 /* The Country String field of the element shall be 3 octets in length */
1357 #define IEEE80211_COUNTRY_STRING_LEN 3
1358
1359 /*
1360 * For regulatory extension stuff see IEEE 802.11-2007
1361 * Annex I (page 1141) and Annex J (page 1147). Also
1362 * review 7.3.2.9.
1363 *
1364 * When dot11RegulatoryClassesRequired is true and the
1365 * first_channel/reg_extension_id is >= 201 then the IE
1366 * compromises of the 'ext' struct represented below:
1367 *
1368 * - Regulatory extension ID - when generating IE this just needs
1369 * to be monotonically increasing for each triplet passed in
1370 * the IE
1371 * - Regulatory class - index into set of rules
1372 * - Coverage class - index into air propagation time (Table 7-27),
1373 * in microseconds, you can compute the air propagation time from
1374 * the index by multiplying by 3, so index 10 yields a propagation
1375 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1376 * yet. A value of 0 inicates air propagation of <= 1 us.
1377 *
1378 * See also Table I.2 for Emission limit sets and table
1379 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1380 * a reg_class to an emission limit set and behavior limit set.
1381 */
1382 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1383
1384 /*
1385 * Channels numbers in the IE must be monotonically increasing
1386 * if dot11RegulatoryClassesRequired is not true.
1387 *
1388 * If dot11RegulatoryClassesRequired is true consecutive
1389 * subband triplets following a regulatory triplet shall
1390 * have monotonically increasing first_channel number fields.
1391 *
1392 * Channel numbers shall not overlap.
1393 *
1394 * Note that max_power is signed.
1395 */
1396 struct ieee80211_country_ie_triplet {
1397 union {
1398 struct {
1399 u8 first_channel;
1400 u8 num_channels;
1401 s8 max_power;
1402 } __attribute__ ((packed)) chans;
1403 struct {
1404 u8 reg_extension_id;
1405 u8 reg_class;
1406 u8 coverage_class;
1407 } __attribute__ ((packed)) ext;
1408 };
1409 } __attribute__ ((packed));
1410
1411 enum ieee80211_timeout_interval_type {
1412 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1413 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1414 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1415 };
1416
1417 /* BACK action code */
1418 enum ieee80211_back_actioncode {
1419 WLAN_ACTION_ADDBA_REQ = 0,
1420 WLAN_ACTION_ADDBA_RESP = 1,
1421 WLAN_ACTION_DELBA = 2,
1422 };
1423
1424 /* BACK (block-ack) parties */
1425 enum ieee80211_back_parties {
1426 WLAN_BACK_RECIPIENT = 0,
1427 WLAN_BACK_INITIATOR = 1,
1428 };
1429
1430 /* SA Query action */
1431 enum ieee80211_sa_query_action {
1432 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1433 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1434 };
1435
1436
1437 /* cipher suite selectors */
1438 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1439 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1440 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1441 /* reserved: 0x000FAC03 */
1442 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1443 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1444 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1445
1446 /* AKM suite selectors */
1447 #define WLAN_AKM_SUITE_8021X 0x000FAC01
1448 #define WLAN_AKM_SUITE_PSK 0x000FAC02
1449 #define WLAN_AKM_SUITE_SAE 0x000FAC08
1450 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09
1451
1452 #define WLAN_MAX_KEY_LEN 32
1453
1454 #define WLAN_PMKID_LEN 16
1455
1456 /*
1457 * WMM/802.11e Tspec Element
1458 */
1459 #define IEEE80211_WMM_IE_TSPEC_TID_MASK 0x0F
1460 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT 1
1461
1462 enum ieee80211_tspec_status_code {
1463 IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1464 IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1465 };
1466
1467 struct ieee80211_tspec_ie {
1468 u8 element_id;
1469 u8 len;
1470 u8 oui[3];
1471 u8 oui_type;
1472 u8 oui_subtype;
1473 u8 version;
1474 __le16 tsinfo;
1475 u8 tsinfo_resvd;
1476 __le16 nominal_msdu;
1477 __le16 max_msdu;
1478 __le32 min_service_int;
1479 __le32 max_service_int;
1480 __le32 inactivity_int;
1481 __le32 suspension_int;
1482 __le32 service_start_time;
1483 __le32 min_data_rate;
1484 __le32 mean_data_rate;
1485 __le32 peak_data_rate;
1486 __le32 max_burst_size;
1487 __le32 delay_bound;
1488 __le32 min_phy_rate;
1489 __le16 sba;
1490 __le16 medium_time;
1491 } __packed;
1492
1493 /**
1494 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1495 * @hdr: the frame
1496 *
1497 * The qos ctrl bytes come after the frame_control, duration, seq_num
1498 * and 3 or 4 addresses of length ETH_ALEN.
1499 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1500 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1501 */
1502 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1503 {
1504 if (ieee80211_has_a4(hdr->frame_control))
1505 return (u8 *)hdr + 30;
1506 else
1507 return (u8 *)hdr + 24;
1508 }
1509
1510 /**
1511 * ieee80211_get_SA - get pointer to SA
1512 * @hdr: the frame
1513 *
1514 * Given an 802.11 frame, this function returns the offset
1515 * to the source address (SA). It does not verify that the
1516 * header is long enough to contain the address, and the
1517 * header must be long enough to contain the frame control
1518 * field.
1519 */
1520 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1521 {
1522 if (ieee80211_has_a4(hdr->frame_control))
1523 return hdr->addr4;
1524 if (ieee80211_has_fromds(hdr->frame_control))
1525 return hdr->addr3;
1526 return hdr->addr2;
1527 }
1528
1529 /**
1530 * ieee80211_get_DA - get pointer to DA
1531 * @hdr: the frame
1532 *
1533 * Given an 802.11 frame, this function returns the offset
1534 * to the destination address (DA). It does not verify that
1535 * the header is long enough to contain the address, and the
1536 * header must be long enough to contain the frame control
1537 * field.
1538 */
1539 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1540 {
1541 if (ieee80211_has_tods(hdr->frame_control))
1542 return hdr->addr3;
1543 else
1544 return hdr->addr1;
1545 }
1546
1547 /**
1548 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1549 * @hdr: the frame (buffer must include at least the first octet of payload)
1550 */
1551 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1552 {
1553 if (ieee80211_is_disassoc(hdr->frame_control) ||
1554 ieee80211_is_deauth(hdr->frame_control))
1555 return true;
1556
1557 if (ieee80211_is_action(hdr->frame_control)) {
1558 u8 *category;
1559
1560 /*
1561 * Action frames, excluding Public Action frames, are Robust
1562 * Management Frames. However, if we are looking at a Protected
1563 * frame, skip the check since the data may be encrypted and
1564 * the frame has already been found to be a Robust Management
1565 * Frame (by the other end).
1566 */
1567 if (ieee80211_has_protected(hdr->frame_control))
1568 return true;
1569 category = ((u8 *) hdr) + 24;
1570 return *category != WLAN_CATEGORY_PUBLIC &&
1571 *category != WLAN_CATEGORY_HT &&
1572 *category != WLAN_CATEGORY_SELF_PROTECTED &&
1573 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1574 }
1575
1576 return false;
1577 }
1578
1579 /**
1580 * ieee80211_fhss_chan_to_freq - get channel frequency
1581 * @channel: the FHSS channel
1582 *
1583 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1584 * Ref IEEE 802.11-2007 section 14.6
1585 */
1586 static inline int ieee80211_fhss_chan_to_freq(int channel)
1587 {
1588 if ((channel > 1) && (channel < 96))
1589 return channel + 2400;
1590 else
1591 return -1;
1592 }
1593
1594 /**
1595 * ieee80211_freq_to_fhss_chan - get channel
1596 * @freq: the channels frequency
1597 *
1598 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1599 * Ref IEEE 802.11-2007 section 14.6
1600 */
1601 static inline int ieee80211_freq_to_fhss_chan(int freq)
1602 {
1603 if ((freq > 2401) && (freq < 2496))
1604 return freq - 2400;
1605 else
1606 return -1;
1607 }
1608
1609 /**
1610 * ieee80211_dsss_chan_to_freq - get channel center frequency
1611 * @channel: the DSSS channel
1612 *
1613 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1614 * Ref IEEE 802.11-2007 section 15.6
1615 */
1616 static inline int ieee80211_dsss_chan_to_freq(int channel)
1617 {
1618 if ((channel > 0) && (channel < 14))
1619 return 2407 + (channel * 5);
1620 else if (channel == 14)
1621 return 2484;
1622 else
1623 return -1;
1624 }
1625
1626 /**
1627 * ieee80211_freq_to_dsss_chan - get channel
1628 * @freq: the frequency
1629 *
1630 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1631 * Ref IEEE 802.11-2007 section 15.6
1632 *
1633 * This routine selects the channel with the closest center frequency.
1634 */
1635 static inline int ieee80211_freq_to_dsss_chan(int freq)
1636 {
1637 if ((freq >= 2410) && (freq < 2475))
1638 return (freq - 2405) / 5;
1639 else if ((freq >= 2482) && (freq < 2487))
1640 return 14;
1641 else
1642 return -1;
1643 }
1644
1645 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1646 * Ref IEEE 802.11-2007 section 18.4.6.2
1647 *
1648 * The channels and frequencies are the same as those defined for DSSS
1649 */
1650 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1651 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1652
1653 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1654 * Ref IEEE 802.11-2007 section 19.4.2
1655 */
1656 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1657 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1658
1659 /**
1660 * ieee80211_ofdm_chan_to_freq - get channel center frequency
1661 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1662 * @channel: the OFDM channel
1663 *
1664 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1665 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1666 */
1667 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1668 {
1669 if ((channel > 0) && (channel <= 200) &&
1670 (s_freq >= 4000))
1671 return s_freq + (channel * 5);
1672 else
1673 return -1;
1674 }
1675
1676 /**
1677 * ieee80211_freq_to_ofdm_channel - get channel
1678 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1679 * @freq: the frequency
1680 *
1681 * Convert frequency (MHz) to IEEE802.11 OFDM channel
1682 * Ref IEEE 802.11-2007 section 17.3.8.3.2
1683 *
1684 * This routine selects the channel with the closest center frequency.
1685 */
1686 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1687 {
1688 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1689 (s_freq >= 4000))
1690 return (freq + 2 - s_freq) / 5;
1691 else
1692 return -1;
1693 }
1694
1695 /**
1696 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1697 * @tu: the TUs
1698 */
1699 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1700 {
1701 return 1024 * tu;
1702 }
1703
1704 /**
1705 * ieee80211_check_tim - check if AID bit is set in TIM
1706 * @tim: the TIM IE
1707 * @tim_len: length of the TIM IE
1708 * @aid: the AID to look for
1709 */
1710 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1711 u8 tim_len, u16 aid)
1712 {
1713 u8 mask;
1714 u8 index, indexn1, indexn2;
1715
1716 if (unlikely(!tim || tim_len < sizeof(*tim)))
1717 return false;
1718
1719 aid &= 0x3fff;
1720 index = aid / 8;
1721 mask = 1 << (aid & 7);
1722
1723 indexn1 = tim->bitmap_ctrl & 0xfe;
1724 indexn2 = tim_len + indexn1 - 4;
1725
1726 if (index < indexn1 || index > indexn2)
1727 return false;
1728
1729 index -= indexn1;
1730
1731 return !!(tim->virtual_map[index] & mask);
1732 }
1733
1734 #endif /* LINUX_IEEE80211_H */
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