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[mirror_ubuntu-artful-kernel.git] / include / linux / ieee80211.h
1 /*
2 * IEEE 802.11 defines
3 *
4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
5 * <jkmaline@cc.hut.fi>
6 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
7 * Copyright (c) 2005, Devicescape Software, Inc.
8 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #ifndef LINUX_IEEE80211_H
16 #define LINUX_IEEE80211_H
17
18 #include <linux/types.h>
19 #include <asm/byteorder.h>
20
21 /*
22 * DS bit usage
23 *
24 * TA = transmitter address
25 * RA = receiver address
26 * DA = destination address
27 * SA = source address
28 *
29 * ToDS FromDS A1(RA) A2(TA) A3 A4 Use
30 * -----------------------------------------------------------------
31 * 0 0 DA SA BSSID - IBSS/DLS
32 * 0 1 DA BSSID SA - AP -> STA
33 * 1 0 BSSID SA DA - AP <- STA
34 * 1 1 RA TA DA SA unspecified (WDS)
35 */
36
37 #define FCS_LEN 4
38
39 #define IEEE80211_FCTL_VERS 0x0003
40 #define IEEE80211_FCTL_FTYPE 0x000c
41 #define IEEE80211_FCTL_STYPE 0x00f0
42 #define IEEE80211_FCTL_TODS 0x0100
43 #define IEEE80211_FCTL_FROMDS 0x0200
44 #define IEEE80211_FCTL_MOREFRAGS 0x0400
45 #define IEEE80211_FCTL_RETRY 0x0800
46 #define IEEE80211_FCTL_PM 0x1000
47 #define IEEE80211_FCTL_MOREDATA 0x2000
48 #define IEEE80211_FCTL_PROTECTED 0x4000
49 #define IEEE80211_FCTL_ORDER 0x8000
50 #define IEEE80211_FCTL_CTL_EXT 0x0f00
51
52 #define IEEE80211_SCTL_FRAG 0x000F
53 #define IEEE80211_SCTL_SEQ 0xFFF0
54
55 #define IEEE80211_FTYPE_MGMT 0x0000
56 #define IEEE80211_FTYPE_CTL 0x0004
57 #define IEEE80211_FTYPE_DATA 0x0008
58 #define IEEE80211_FTYPE_EXT 0x000c
59
60 /* management */
61 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
62 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
63 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
64 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
65 #define IEEE80211_STYPE_PROBE_REQ 0x0040
66 #define IEEE80211_STYPE_PROBE_RESP 0x0050
67 #define IEEE80211_STYPE_BEACON 0x0080
68 #define IEEE80211_STYPE_ATIM 0x0090
69 #define IEEE80211_STYPE_DISASSOC 0x00A0
70 #define IEEE80211_STYPE_AUTH 0x00B0
71 #define IEEE80211_STYPE_DEAUTH 0x00C0
72 #define IEEE80211_STYPE_ACTION 0x00D0
73
74 /* control */
75 #define IEEE80211_STYPE_CTL_EXT 0x0060
76 #define IEEE80211_STYPE_BACK_REQ 0x0080
77 #define IEEE80211_STYPE_BACK 0x0090
78 #define IEEE80211_STYPE_PSPOLL 0x00A0
79 #define IEEE80211_STYPE_RTS 0x00B0
80 #define IEEE80211_STYPE_CTS 0x00C0
81 #define IEEE80211_STYPE_ACK 0x00D0
82 #define IEEE80211_STYPE_CFEND 0x00E0
83 #define IEEE80211_STYPE_CFENDACK 0x00F0
84
85 /* data */
86 #define IEEE80211_STYPE_DATA 0x0000
87 #define IEEE80211_STYPE_DATA_CFACK 0x0010
88 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
89 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
90 #define IEEE80211_STYPE_NULLFUNC 0x0040
91 #define IEEE80211_STYPE_CFACK 0x0050
92 #define IEEE80211_STYPE_CFPOLL 0x0060
93 #define IEEE80211_STYPE_CFACKPOLL 0x0070
94 #define IEEE80211_STYPE_QOS_DATA 0x0080
95 #define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090
96 #define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0
97 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0
98 #define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0
99 #define IEEE80211_STYPE_QOS_CFACK 0x00D0
100 #define IEEE80211_STYPE_QOS_CFPOLL 0x00E0
101 #define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0
102
103 /* extension, added by 802.11ad */
104 #define IEEE80211_STYPE_DMG_BEACON 0x0000
105
106 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
107 #define IEEE80211_CTL_EXT_POLL 0x2000
108 #define IEEE80211_CTL_EXT_SPR 0x3000
109 #define IEEE80211_CTL_EXT_GRANT 0x4000
110 #define IEEE80211_CTL_EXT_DMG_CTS 0x5000
111 #define IEEE80211_CTL_EXT_DMG_DTS 0x6000
112 #define IEEE80211_CTL_EXT_SSW 0x8000
113 #define IEEE80211_CTL_EXT_SSW_FBACK 0x9000
114 #define IEEE80211_CTL_EXT_SSW_ACK 0xa000
115
116 /* miscellaneous IEEE 802.11 constants */
117 #define IEEE80211_MAX_FRAG_THRESHOLD 2352
118 #define IEEE80211_MAX_RTS_THRESHOLD 2353
119 #define IEEE80211_MAX_AID 2007
120 #define IEEE80211_MAX_TIM_LEN 251
121 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
122 6.2.1.1.2.
123
124 802.11e clarifies the figure in section 7.1.2. The frame body is
125 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
126 #define IEEE80211_MAX_DATA_LEN 2304
127 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
128 #define IEEE80211_MAX_FRAME_LEN 2352
129
130 #define IEEE80211_MAX_SSID_LEN 32
131
132 #define IEEE80211_MAX_MESH_ID_LEN 32
133
134 #define IEEE80211_QOS_CTL_LEN 2
135 /* 1d tag mask */
136 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
137 /* TID mask */
138 #define IEEE80211_QOS_CTL_TID_MASK 0x000f
139 /* EOSP */
140 #define IEEE80211_QOS_CTL_EOSP 0x0010
141 /* ACK policy */
142 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL 0x0000
143 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK 0x0020
144 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL 0x0040
145 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK 0x0060
146 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK 0x0060
147 /* A-MSDU 802.11n */
148 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT 0x0080
149 /* Mesh Control 802.11s */
150 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT 0x0100
151
152 /* U-APSD queue for WMM IEs sent by AP */
153 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7)
154 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f
155
156 /* U-APSD queues for WMM IEs sent by STA */
157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0)
158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1)
159 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2)
160 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3)
161 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f
162
163 /* U-APSD max SP length for WMM IEs sent by STA */
164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00
165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01
166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02
167 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03
168 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03
169 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5
170
171 #define IEEE80211_HT_CTL_LEN 4
172
173 struct ieee80211_hdr {
174 __le16 frame_control;
175 __le16 duration_id;
176 u8 addr1[6];
177 u8 addr2[6];
178 u8 addr3[6];
179 __le16 seq_ctrl;
180 u8 addr4[6];
181 } __attribute__ ((packed));
182
183 struct ieee80211_hdr_3addr {
184 __le16 frame_control;
185 __le16 duration_id;
186 u8 addr1[6];
187 u8 addr2[6];
188 u8 addr3[6];
189 __le16 seq_ctrl;
190 } __attribute__ ((packed));
191
192 struct ieee80211_qos_hdr {
193 __le16 frame_control;
194 __le16 duration_id;
195 u8 addr1[6];
196 u8 addr2[6];
197 u8 addr3[6];
198 __le16 seq_ctrl;
199 __le16 qos_ctrl;
200 } __attribute__ ((packed));
201
202 /**
203 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
204 * @fc: frame control bytes in little-endian byteorder
205 */
206 static inline int ieee80211_has_tods(__le16 fc)
207 {
208 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
209 }
210
211 /**
212 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
213 * @fc: frame control bytes in little-endian byteorder
214 */
215 static inline int ieee80211_has_fromds(__le16 fc)
216 {
217 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
218 }
219
220 /**
221 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
222 * @fc: frame control bytes in little-endian byteorder
223 */
224 static inline int ieee80211_has_a4(__le16 fc)
225 {
226 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
227 return (fc & tmp) == tmp;
228 }
229
230 /**
231 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
232 * @fc: frame control bytes in little-endian byteorder
233 */
234 static inline int ieee80211_has_morefrags(__le16 fc)
235 {
236 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
237 }
238
239 /**
240 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
241 * @fc: frame control bytes in little-endian byteorder
242 */
243 static inline int ieee80211_has_retry(__le16 fc)
244 {
245 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
246 }
247
248 /**
249 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
250 * @fc: frame control bytes in little-endian byteorder
251 */
252 static inline int ieee80211_has_pm(__le16 fc)
253 {
254 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
255 }
256
257 /**
258 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
259 * @fc: frame control bytes in little-endian byteorder
260 */
261 static inline int ieee80211_has_moredata(__le16 fc)
262 {
263 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
264 }
265
266 /**
267 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
268 * @fc: frame control bytes in little-endian byteorder
269 */
270 static inline int ieee80211_has_protected(__le16 fc)
271 {
272 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
273 }
274
275 /**
276 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
277 * @fc: frame control bytes in little-endian byteorder
278 */
279 static inline int ieee80211_has_order(__le16 fc)
280 {
281 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
282 }
283
284 /**
285 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
286 * @fc: frame control bytes in little-endian byteorder
287 */
288 static inline int ieee80211_is_mgmt(__le16 fc)
289 {
290 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
291 cpu_to_le16(IEEE80211_FTYPE_MGMT);
292 }
293
294 /**
295 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
296 * @fc: frame control bytes in little-endian byteorder
297 */
298 static inline int ieee80211_is_ctl(__le16 fc)
299 {
300 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
301 cpu_to_le16(IEEE80211_FTYPE_CTL);
302 }
303
304 /**
305 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
306 * @fc: frame control bytes in little-endian byteorder
307 */
308 static inline int ieee80211_is_data(__le16 fc)
309 {
310 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
311 cpu_to_le16(IEEE80211_FTYPE_DATA);
312 }
313
314 /**
315 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
316 * @fc: frame control bytes in little-endian byteorder
317 */
318 static inline int ieee80211_is_data_qos(__le16 fc)
319 {
320 /*
321 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
322 * to check the one bit
323 */
324 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
325 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
326 }
327
328 /**
329 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
330 * @fc: frame control bytes in little-endian byteorder
331 */
332 static inline int ieee80211_is_data_present(__le16 fc)
333 {
334 /*
335 * mask with 0x40 and test that that bit is clear to only return true
336 * for the data-containing substypes.
337 */
338 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
339 cpu_to_le16(IEEE80211_FTYPE_DATA);
340 }
341
342 /**
343 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
344 * @fc: frame control bytes in little-endian byteorder
345 */
346 static inline int ieee80211_is_assoc_req(__le16 fc)
347 {
348 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
349 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
350 }
351
352 /**
353 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
354 * @fc: frame control bytes in little-endian byteorder
355 */
356 static inline int ieee80211_is_assoc_resp(__le16 fc)
357 {
358 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
359 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
360 }
361
362 /**
363 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
364 * @fc: frame control bytes in little-endian byteorder
365 */
366 static inline int ieee80211_is_reassoc_req(__le16 fc)
367 {
368 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
369 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
370 }
371
372 /**
373 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
374 * @fc: frame control bytes in little-endian byteorder
375 */
376 static inline int ieee80211_is_reassoc_resp(__le16 fc)
377 {
378 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
379 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
380 }
381
382 /**
383 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
384 * @fc: frame control bytes in little-endian byteorder
385 */
386 static inline int ieee80211_is_probe_req(__le16 fc)
387 {
388 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
389 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
390 }
391
392 /**
393 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
394 * @fc: frame control bytes in little-endian byteorder
395 */
396 static inline int ieee80211_is_probe_resp(__le16 fc)
397 {
398 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
399 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
400 }
401
402 /**
403 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
404 * @fc: frame control bytes in little-endian byteorder
405 */
406 static inline int ieee80211_is_beacon(__le16 fc)
407 {
408 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
409 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
410 }
411
412 /**
413 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
414 * @fc: frame control bytes in little-endian byteorder
415 */
416 static inline int ieee80211_is_atim(__le16 fc)
417 {
418 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
419 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
420 }
421
422 /**
423 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
424 * @fc: frame control bytes in little-endian byteorder
425 */
426 static inline int ieee80211_is_disassoc(__le16 fc)
427 {
428 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
429 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
430 }
431
432 /**
433 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
434 * @fc: frame control bytes in little-endian byteorder
435 */
436 static inline int ieee80211_is_auth(__le16 fc)
437 {
438 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
439 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
440 }
441
442 /**
443 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
444 * @fc: frame control bytes in little-endian byteorder
445 */
446 static inline int ieee80211_is_deauth(__le16 fc)
447 {
448 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
449 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
450 }
451
452 /**
453 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
454 * @fc: frame control bytes in little-endian byteorder
455 */
456 static inline int ieee80211_is_action(__le16 fc)
457 {
458 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
459 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
460 }
461
462 /**
463 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
464 * @fc: frame control bytes in little-endian byteorder
465 */
466 static inline int ieee80211_is_back_req(__le16 fc)
467 {
468 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
469 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
470 }
471
472 /**
473 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
474 * @fc: frame control bytes in little-endian byteorder
475 */
476 static inline int ieee80211_is_back(__le16 fc)
477 {
478 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
479 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
480 }
481
482 /**
483 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
484 * @fc: frame control bytes in little-endian byteorder
485 */
486 static inline int ieee80211_is_pspoll(__le16 fc)
487 {
488 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
489 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
490 }
491
492 /**
493 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
494 * @fc: frame control bytes in little-endian byteorder
495 */
496 static inline int ieee80211_is_rts(__le16 fc)
497 {
498 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
499 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
500 }
501
502 /**
503 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
504 * @fc: frame control bytes in little-endian byteorder
505 */
506 static inline int ieee80211_is_cts(__le16 fc)
507 {
508 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
509 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
510 }
511
512 /**
513 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
514 * @fc: frame control bytes in little-endian byteorder
515 */
516 static inline int ieee80211_is_ack(__le16 fc)
517 {
518 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
519 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
520 }
521
522 /**
523 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
524 * @fc: frame control bytes in little-endian byteorder
525 */
526 static inline int ieee80211_is_cfend(__le16 fc)
527 {
528 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
529 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
530 }
531
532 /**
533 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
534 * @fc: frame control bytes in little-endian byteorder
535 */
536 static inline int ieee80211_is_cfendack(__le16 fc)
537 {
538 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
539 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
540 }
541
542 /**
543 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
544 * @fc: frame control bytes in little-endian byteorder
545 */
546 static inline int ieee80211_is_nullfunc(__le16 fc)
547 {
548 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
549 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
550 }
551
552 /**
553 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
554 * @fc: frame control bytes in little-endian byteorder
555 */
556 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
557 {
558 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
559 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
560 }
561
562 /**
563 * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
564 * @seq_ctrl: frame sequence control bytes in little-endian byteorder
565 */
566 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
567 {
568 return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
569 }
570
571 struct ieee80211s_hdr {
572 u8 flags;
573 u8 ttl;
574 __le32 seqnum;
575 u8 eaddr1[6];
576 u8 eaddr2[6];
577 } __attribute__ ((packed));
578
579 /* Mesh flags */
580 #define MESH_FLAGS_AE_A4 0x1
581 #define MESH_FLAGS_AE_A5_A6 0x2
582 #define MESH_FLAGS_AE 0x3
583 #define MESH_FLAGS_PS_DEEP 0x4
584
585 /**
586 * enum ieee80211_preq_flags - mesh PREQ element flags
587 *
588 * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
589 */
590 enum ieee80211_preq_flags {
591 IEEE80211_PREQ_PROACTIVE_PREP_FLAG = 1<<2,
592 };
593
594 /**
595 * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
596 *
597 * @IEEE80211_PREQ_TO_FLAG: target only subfield
598 * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
599 */
600 enum ieee80211_preq_target_flags {
601 IEEE80211_PREQ_TO_FLAG = 1<<0,
602 IEEE80211_PREQ_USN_FLAG = 1<<2,
603 };
604
605 /**
606 * struct ieee80211_quiet_ie
607 *
608 * This structure refers to "Quiet information element"
609 */
610 struct ieee80211_quiet_ie {
611 u8 count;
612 u8 period;
613 __le16 duration;
614 __le16 offset;
615 } __attribute__ ((packed));
616
617 /**
618 * struct ieee80211_msrment_ie
619 *
620 * This structure refers to "Measurement Request/Report information element"
621 */
622 struct ieee80211_msrment_ie {
623 u8 token;
624 u8 mode;
625 u8 type;
626 u8 request[0];
627 } __attribute__ ((packed));
628
629 /**
630 * struct ieee80211_channel_sw_ie
631 *
632 * This structure refers to "Channel Switch Announcement information element"
633 */
634 struct ieee80211_channel_sw_ie {
635 u8 mode;
636 u8 new_ch_num;
637 u8 count;
638 } __attribute__ ((packed));
639
640 /**
641 * struct ieee80211_tim
642 *
643 * This structure refers to "Traffic Indication Map information element"
644 */
645 struct ieee80211_tim_ie {
646 u8 dtim_count;
647 u8 dtim_period;
648 u8 bitmap_ctrl;
649 /* variable size: 1 - 251 bytes */
650 u8 virtual_map[1];
651 } __attribute__ ((packed));
652
653 /**
654 * struct ieee80211_meshconf_ie
655 *
656 * This structure refers to "Mesh Configuration information element"
657 */
658 struct ieee80211_meshconf_ie {
659 u8 meshconf_psel;
660 u8 meshconf_pmetric;
661 u8 meshconf_congest;
662 u8 meshconf_synch;
663 u8 meshconf_auth;
664 u8 meshconf_form;
665 u8 meshconf_cap;
666 } __attribute__ ((packed));
667
668 /**
669 * struct ieee80211_rann_ie
670 *
671 * This structure refers to "Root Announcement information element"
672 */
673 struct ieee80211_rann_ie {
674 u8 rann_flags;
675 u8 rann_hopcount;
676 u8 rann_ttl;
677 u8 rann_addr[6];
678 __le32 rann_seq;
679 __le32 rann_interval;
680 __le32 rann_metric;
681 } __attribute__ ((packed));
682
683 enum ieee80211_rann_flags {
684 RANN_FLAG_IS_GATE = 1 << 0,
685 };
686
687 #define WLAN_SA_QUERY_TR_ID_LEN 2
688
689 struct ieee80211_mgmt {
690 __le16 frame_control;
691 __le16 duration;
692 u8 da[6];
693 u8 sa[6];
694 u8 bssid[6];
695 __le16 seq_ctrl;
696 union {
697 struct {
698 __le16 auth_alg;
699 __le16 auth_transaction;
700 __le16 status_code;
701 /* possibly followed by Challenge text */
702 u8 variable[0];
703 } __attribute__ ((packed)) auth;
704 struct {
705 __le16 reason_code;
706 } __attribute__ ((packed)) deauth;
707 struct {
708 __le16 capab_info;
709 __le16 listen_interval;
710 /* followed by SSID and Supported rates */
711 u8 variable[0];
712 } __attribute__ ((packed)) assoc_req;
713 struct {
714 __le16 capab_info;
715 __le16 status_code;
716 __le16 aid;
717 /* followed by Supported rates */
718 u8 variable[0];
719 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
720 struct {
721 __le16 capab_info;
722 __le16 listen_interval;
723 u8 current_ap[6];
724 /* followed by SSID and Supported rates */
725 u8 variable[0];
726 } __attribute__ ((packed)) reassoc_req;
727 struct {
728 __le16 reason_code;
729 } __attribute__ ((packed)) disassoc;
730 struct {
731 __le64 timestamp;
732 __le16 beacon_int;
733 __le16 capab_info;
734 /* followed by some of SSID, Supported rates,
735 * FH Params, DS Params, CF Params, IBSS Params, TIM */
736 u8 variable[0];
737 } __attribute__ ((packed)) beacon;
738 struct {
739 /* only variable items: SSID, Supported rates */
740 u8 variable[0];
741 } __attribute__ ((packed)) probe_req;
742 struct {
743 __le64 timestamp;
744 __le16 beacon_int;
745 __le16 capab_info;
746 /* followed by some of SSID, Supported rates,
747 * FH Params, DS Params, CF Params, IBSS Params */
748 u8 variable[0];
749 } __attribute__ ((packed)) probe_resp;
750 struct {
751 u8 category;
752 union {
753 struct {
754 u8 action_code;
755 u8 dialog_token;
756 u8 status_code;
757 u8 variable[0];
758 } __attribute__ ((packed)) wme_action;
759 struct{
760 u8 action_code;
761 u8 element_id;
762 u8 length;
763 struct ieee80211_channel_sw_ie sw_elem;
764 } __attribute__((packed)) chan_switch;
765 struct{
766 u8 action_code;
767 u8 dialog_token;
768 u8 element_id;
769 u8 length;
770 struct ieee80211_msrment_ie msr_elem;
771 } __attribute__((packed)) measurement;
772 struct{
773 u8 action_code;
774 u8 dialog_token;
775 __le16 capab;
776 __le16 timeout;
777 __le16 start_seq_num;
778 } __attribute__((packed)) addba_req;
779 struct{
780 u8 action_code;
781 u8 dialog_token;
782 __le16 status;
783 __le16 capab;
784 __le16 timeout;
785 } __attribute__((packed)) addba_resp;
786 struct{
787 u8 action_code;
788 __le16 params;
789 __le16 reason_code;
790 } __attribute__((packed)) delba;
791 struct {
792 u8 action_code;
793 u8 variable[0];
794 } __attribute__((packed)) self_prot;
795 struct{
796 u8 action_code;
797 u8 variable[0];
798 } __attribute__((packed)) mesh_action;
799 struct {
800 u8 action;
801 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
802 } __attribute__ ((packed)) sa_query;
803 struct {
804 u8 action;
805 u8 smps_control;
806 } __attribute__ ((packed)) ht_smps;
807 struct {
808 u8 action_code;
809 u8 dialog_token;
810 __le16 capability;
811 u8 variable[0];
812 } __packed tdls_discover_resp;
813 } u;
814 } __attribute__ ((packed)) action;
815 } u;
816 } __attribute__ ((packed));
817
818 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
819 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
820
821 /* mgmt header + 1 byte category code */
822 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
823
824
825 /* Management MIC information element (IEEE 802.11w) */
826 struct ieee80211_mmie {
827 u8 element_id;
828 u8 length;
829 __le16 key_id;
830 u8 sequence_number[6];
831 u8 mic[8];
832 } __attribute__ ((packed));
833
834 struct ieee80211_vendor_ie {
835 u8 element_id;
836 u8 len;
837 u8 oui[3];
838 u8 oui_type;
839 } __packed;
840
841 /* Control frames */
842 struct ieee80211_rts {
843 __le16 frame_control;
844 __le16 duration;
845 u8 ra[6];
846 u8 ta[6];
847 } __attribute__ ((packed));
848
849 struct ieee80211_cts {
850 __le16 frame_control;
851 __le16 duration;
852 u8 ra[6];
853 } __attribute__ ((packed));
854
855 struct ieee80211_pspoll {
856 __le16 frame_control;
857 __le16 aid;
858 u8 bssid[6];
859 u8 ta[6];
860 } __attribute__ ((packed));
861
862 /* TDLS */
863
864 /* Link-id information element */
865 struct ieee80211_tdls_lnkie {
866 u8 ie_type; /* Link Identifier IE */
867 u8 ie_len;
868 u8 bssid[6];
869 u8 init_sta[6];
870 u8 resp_sta[6];
871 } __packed;
872
873 struct ieee80211_tdls_data {
874 u8 da[6];
875 u8 sa[6];
876 __be16 ether_type;
877 u8 payload_type;
878 u8 category;
879 u8 action_code;
880 union {
881 struct {
882 u8 dialog_token;
883 __le16 capability;
884 u8 variable[0];
885 } __packed setup_req;
886 struct {
887 __le16 status_code;
888 u8 dialog_token;
889 __le16 capability;
890 u8 variable[0];
891 } __packed setup_resp;
892 struct {
893 __le16 status_code;
894 u8 dialog_token;
895 u8 variable[0];
896 } __packed setup_cfm;
897 struct {
898 __le16 reason_code;
899 u8 variable[0];
900 } __packed teardown;
901 struct {
902 u8 dialog_token;
903 u8 variable[0];
904 } __packed discover_req;
905 } u;
906 } __packed;
907
908 /**
909 * struct ieee80211_bar - HT Block Ack Request
910 *
911 * This structure refers to "HT BlockAckReq" as
912 * described in 802.11n draft section 7.2.1.7.1
913 */
914 struct ieee80211_bar {
915 __le16 frame_control;
916 __le16 duration;
917 __u8 ra[6];
918 __u8 ta[6];
919 __le16 control;
920 __le16 start_seq_num;
921 } __attribute__((packed));
922
923 /* 802.11 BAR control masks */
924 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
925 #define IEEE80211_BAR_CTRL_MULTI_TID 0x0002
926 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
927 #define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000
928 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12
929
930 #define IEEE80211_HT_MCS_MASK_LEN 10
931
932 /**
933 * struct ieee80211_mcs_info - MCS information
934 * @rx_mask: RX mask
935 * @rx_highest: highest supported RX rate. If set represents
936 * the highest supported RX data rate in units of 1 Mbps.
937 * If this field is 0 this value should not be used to
938 * consider the highest RX data rate supported.
939 * @tx_params: TX parameters
940 */
941 struct ieee80211_mcs_info {
942 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
943 __le16 rx_highest;
944 u8 tx_params;
945 u8 reserved[3];
946 } __attribute__((packed));
947
948 /* 802.11n HT capability MSC set */
949 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
950 #define IEEE80211_HT_MCS_TX_DEFINED 0x01
951 #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02
952 /* value 0 == 1 stream etc */
953 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C
954 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2
955 #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4
956 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10
957
958 /*
959 * 802.11n D5.0 20.3.5 / 20.6 says:
960 * - indices 0 to 7 and 32 are single spatial stream
961 * - 8 to 31 are multiple spatial streams using equal modulation
962 * [8..15 for two streams, 16..23 for three and 24..31 for four]
963 * - remainder are multiple spatial streams using unequal modulation
964 */
965 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
966 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
967 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
968
969 /**
970 * struct ieee80211_ht_cap - HT capabilities
971 *
972 * This structure is the "HT capabilities element" as
973 * described in 802.11n D5.0 7.3.2.57
974 */
975 struct ieee80211_ht_cap {
976 __le16 cap_info;
977 u8 ampdu_params_info;
978
979 /* 16 bytes MCS information */
980 struct ieee80211_mcs_info mcs;
981
982 __le16 extended_ht_cap_info;
983 __le32 tx_BF_cap_info;
984 u8 antenna_selection_info;
985 } __attribute__ ((packed));
986
987 /* 802.11n HT capabilities masks (for cap_info) */
988 #define IEEE80211_HT_CAP_LDPC_CODING 0x0001
989 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002
990 #define IEEE80211_HT_CAP_SM_PS 0x000C
991 #define IEEE80211_HT_CAP_SM_PS_SHIFT 2
992 #define IEEE80211_HT_CAP_GRN_FLD 0x0010
993 #define IEEE80211_HT_CAP_SGI_20 0x0020
994 #define IEEE80211_HT_CAP_SGI_40 0x0040
995 #define IEEE80211_HT_CAP_TX_STBC 0x0080
996 #define IEEE80211_HT_CAP_RX_STBC 0x0300
997 #define IEEE80211_HT_CAP_RX_STBC_SHIFT 8
998 #define IEEE80211_HT_CAP_DELAY_BA 0x0400
999 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
1000 #define IEEE80211_HT_CAP_DSSSCCK40 0x1000
1001 #define IEEE80211_HT_CAP_RESERVED 0x2000
1002 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000
1003 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000
1004
1005 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1006 #define IEEE80211_HT_EXT_CAP_PCO 0x0001
1007 #define IEEE80211_HT_EXT_CAP_PCO_TIME 0x0006
1008 #define IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT 1
1009 #define IEEE80211_HT_EXT_CAP_MCS_FB 0x0300
1010 #define IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT 8
1011 #define IEEE80211_HT_EXT_CAP_HTC_SUP 0x0400
1012 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER 0x0800
1013
1014 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1015 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03
1016 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C
1017 #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2
1018
1019 /*
1020 * Maximum length of AMPDU that the STA can receive.
1021 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1022 */
1023 enum ieee80211_max_ampdu_length_exp {
1024 IEEE80211_HT_MAX_AMPDU_8K = 0,
1025 IEEE80211_HT_MAX_AMPDU_16K = 1,
1026 IEEE80211_HT_MAX_AMPDU_32K = 2,
1027 IEEE80211_HT_MAX_AMPDU_64K = 3
1028 };
1029
1030 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1031
1032 /* Minimum MPDU start spacing */
1033 enum ieee80211_min_mpdu_spacing {
1034 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */
1035 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */
1036 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */
1037 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */
1038 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */
1039 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */
1040 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */
1041 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */
1042 };
1043
1044 /**
1045 * struct ieee80211_ht_operation - HT operation IE
1046 *
1047 * This structure is the "HT operation element" as
1048 * described in 802.11n-2009 7.3.2.57
1049 */
1050 struct ieee80211_ht_operation {
1051 u8 primary_chan;
1052 u8 ht_param;
1053 __le16 operation_mode;
1054 __le16 stbc_param;
1055 u8 basic_set[16];
1056 } __attribute__ ((packed));
1057
1058 /* for ht_param */
1059 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
1060 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00
1061 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01
1062 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03
1063 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04
1064 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08
1065
1066 /* for operation_mode */
1067 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003
1068 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0
1069 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1
1070 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2
1071 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3
1072 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004
1073 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010
1074
1075 /* for stbc_param */
1076 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040
1077 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080
1078 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100
1079 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200
1080 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400
1081 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800
1082
1083
1084 /* block-ack parameters */
1085 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1086 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1087 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1088 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1089 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1090
1091 /*
1092 * A-PMDU buffer sizes
1093 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1094 */
1095 #define IEEE80211_MIN_AMPDU_BUF 0x8
1096 #define IEEE80211_MAX_AMPDU_BUF 0x40
1097
1098
1099 /* Spatial Multiplexing Power Save Modes (for capability) */
1100 #define WLAN_HT_CAP_SM_PS_STATIC 0
1101 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1
1102 #define WLAN_HT_CAP_SM_PS_INVALID 2
1103 #define WLAN_HT_CAP_SM_PS_DISABLED 3
1104
1105 /* for SM power control field lower two bits */
1106 #define WLAN_HT_SMPS_CONTROL_DISABLED 0
1107 #define WLAN_HT_SMPS_CONTROL_STATIC 1
1108 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3
1109
1110 #define VHT_MCS_SUPPORTED_SET_SIZE 8
1111
1112 struct ieee80211_vht_capabilities {
1113 __le32 vht_capabilities_info;
1114 u8 vht_supported_mcs_set[VHT_MCS_SUPPORTED_SET_SIZE];
1115 } __packed;
1116
1117 struct ieee80211_vht_operation {
1118 u8 vht_op_info_chwidth;
1119 u8 vht_op_info_chan_center_freq_seg1_idx;
1120 u8 vht_op_info_chan_center_freq_seg2_idx;
1121 __le16 vht_basic_mcs_set;
1122 } __packed;
1123
1124 /**
1125 * struct ieee80211_vht_mcs_info - VHT MCS information
1126 * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1127 * @rx_highest: Indicates highest long GI VHT PPDU data rate
1128 * STA can receive. Rate expressed in units of 1 Mbps.
1129 * If this field is 0 this value should not be used to
1130 * consider the highest RX data rate supported.
1131 * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1132 * @tx_highest: Indicates highest long GI VHT PPDU data rate
1133 * STA can transmit. Rate expressed in units of 1 Mbps.
1134 * If this field is 0 this value should not be used to
1135 * consider the highest TX data rate supported.
1136 */
1137 struct ieee80211_vht_mcs_info {
1138 __le16 rx_mcs_map;
1139 __le16 rx_highest;
1140 __le16 tx_mcs_map;
1141 __le16 tx_highest;
1142 } __packed;
1143
1144 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1145 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1146 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT 2
1147 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1148
1149 /* 802.11ac VHT Capabilities */
1150 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 0x00000000
1151 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 0x00000001
1152 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 0x00000002
1153 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ 0x00000004
1154 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ 0x00000008
1155 #define IEEE80211_VHT_CAP_RXLDPC 0x00000010
1156 #define IEEE80211_VHT_CAP_SHORT_GI_80 0x00000020
1157 #define IEEE80211_VHT_CAP_SHORT_GI_160 0x00000040
1158 #define IEEE80211_VHT_CAP_TXSTBC 0x00000080
1159 #define IEEE80211_VHT_CAP_RXSTBC_1 0x00000100
1160 #define IEEE80211_VHT_CAP_RXSTBC_2 0x00000200
1161 #define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300
1162 #define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400
1163 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800
1164 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000
1165 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX 0x00006000
1166 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX 0x00030000
1167 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE 0x00080000
1168 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE 0x00100000
1169 #define IEEE80211_VHT_CAP_VHT_TXOP_PS 0x00200000
1170 #define IEEE80211_VHT_CAP_HTC_VHT 0x00400000
1171 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT 0x00800000
1172 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB 0x08000000
1173 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB 0x0c000000
1174 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN 0x10000000
1175 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN 0x20000000
1176
1177 /* Authentication algorithms */
1178 #define WLAN_AUTH_OPEN 0
1179 #define WLAN_AUTH_SHARED_KEY 1
1180 #define WLAN_AUTH_FT 2
1181 #define WLAN_AUTH_SAE 3
1182 #define WLAN_AUTH_LEAP 128
1183
1184 #define WLAN_AUTH_CHALLENGE_LEN 128
1185
1186 #define WLAN_CAPABILITY_ESS (1<<0)
1187 #define WLAN_CAPABILITY_IBSS (1<<1)
1188
1189 /*
1190 * A mesh STA sets the ESS and IBSS capability bits to zero.
1191 * however, this holds true for p2p probe responses (in the p2p_find
1192 * phase) as well.
1193 */
1194 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1195 (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1196
1197 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
1198 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1199 #define WLAN_CAPABILITY_PRIVACY (1<<4)
1200 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
1201 #define WLAN_CAPABILITY_PBCC (1<<6)
1202 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1203
1204 /* 802.11h */
1205 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
1206 #define WLAN_CAPABILITY_QOS (1<<9)
1207 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1208 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
1209
1210 /* DMG (60gHz) 802.11ad */
1211 /* type - bits 0..1 */
1212 #define WLAN_CAPABILITY_DMG_TYPE_IBSS (1<<0) /* Tx by: STA */
1213 #define WLAN_CAPABILITY_DMG_TYPE_PBSS (2<<0) /* Tx by: PCP */
1214 #define WLAN_CAPABILITY_DMG_TYPE_AP (3<<0) /* Tx by: AP */
1215
1216 #define WLAN_CAPABILITY_DMG_CBAP_ONLY (1<<2)
1217 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1218 #define WLAN_CAPABILITY_DMG_PRIVACY (1<<4)
1219 #define WLAN_CAPABILITY_DMG_ECPAC (1<<5)
1220
1221 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT (1<<8)
1222 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE (1<<12)
1223
1224 /* measurement */
1225 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0)
1226 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1)
1227 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2)
1228
1229 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0
1230 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1
1231 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2
1232
1233 /* 802.11g ERP information element */
1234 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1235 #define WLAN_ERP_USE_PROTECTION (1<<1)
1236 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1237
1238 /* WLAN_ERP_BARKER_PREAMBLE values */
1239 enum {
1240 WLAN_ERP_PREAMBLE_SHORT = 0,
1241 WLAN_ERP_PREAMBLE_LONG = 1,
1242 };
1243
1244 /* Band ID, 802.11ad #8.4.1.45 */
1245 enum {
1246 IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1247 IEEE80211_BANDID_SUB1 = 1, /* Sub-1 GHz (excluding TV white spaces) */
1248 IEEE80211_BANDID_2G = 2, /* 2.4 GHz */
1249 IEEE80211_BANDID_3G = 3, /* 3.6 GHz */
1250 IEEE80211_BANDID_5G = 4, /* 4.9 and 5 GHz */
1251 IEEE80211_BANDID_60G = 5, /* 60 GHz */
1252 };
1253
1254 /* Status codes */
1255 enum ieee80211_statuscode {
1256 WLAN_STATUS_SUCCESS = 0,
1257 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1258 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1259 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1260 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1261 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1262 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1263 WLAN_STATUS_CHALLENGE_FAIL = 15,
1264 WLAN_STATUS_AUTH_TIMEOUT = 16,
1265 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1266 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1267 /* 802.11b */
1268 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1269 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1270 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1271 /* 802.11h */
1272 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1273 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1274 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1275 /* 802.11g */
1276 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1277 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1278 /* 802.11w */
1279 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1280 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1281 /* 802.11i */
1282 WLAN_STATUS_INVALID_IE = 40,
1283 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1284 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1285 WLAN_STATUS_INVALID_AKMP = 43,
1286 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1287 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1288 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1289 /* 802.11e */
1290 WLAN_STATUS_UNSPECIFIED_QOS = 32,
1291 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1292 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1293 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1294 WLAN_STATUS_REQUEST_DECLINED = 37,
1295 WLAN_STATUS_INVALID_QOS_PARAM = 38,
1296 WLAN_STATUS_CHANGE_TSPEC = 39,
1297 WLAN_STATUS_WAIT_TS_DELAY = 47,
1298 WLAN_STATUS_NO_DIRECT_LINK = 48,
1299 WLAN_STATUS_STA_NOT_PRESENT = 49,
1300 WLAN_STATUS_STA_NOT_QSTA = 50,
1301 /* 802.11s */
1302 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1303 WLAN_STATUS_FCG_NOT_SUPP = 78,
1304 WLAN_STATUS_STA_NO_TBTT = 78,
1305 /* 802.11ad */
1306 WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1307 WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1308 WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1309 WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1310 WLAN_STATUS_PERFORMING_FST_NOW = 87,
1311 WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1312 WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1313 WLAN_STATUS_REJECT_DSE_BAND = 96,
1314 WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1315 WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1316 };
1317
1318
1319 /* Reason codes */
1320 enum ieee80211_reasoncode {
1321 WLAN_REASON_UNSPECIFIED = 1,
1322 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1323 WLAN_REASON_DEAUTH_LEAVING = 3,
1324 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1325 WLAN_REASON_DISASSOC_AP_BUSY = 5,
1326 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1327 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1328 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1329 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1330 /* 802.11h */
1331 WLAN_REASON_DISASSOC_BAD_POWER = 10,
1332 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1333 /* 802.11i */
1334 WLAN_REASON_INVALID_IE = 13,
1335 WLAN_REASON_MIC_FAILURE = 14,
1336 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1337 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1338 WLAN_REASON_IE_DIFFERENT = 17,
1339 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1340 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1341 WLAN_REASON_INVALID_AKMP = 20,
1342 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1343 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1344 WLAN_REASON_IEEE8021X_FAILED = 23,
1345 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1346 /* 802.11e */
1347 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1348 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1349 WLAN_REASON_DISASSOC_LOW_ACK = 34,
1350 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1351 WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1352 WLAN_REASON_QSTA_NOT_USE = 37,
1353 WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1354 WLAN_REASON_QSTA_TIMEOUT = 39,
1355 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1356 /* 802.11s */
1357 WLAN_REASON_MESH_PEER_CANCELED = 52,
1358 WLAN_REASON_MESH_MAX_PEERS = 53,
1359 WLAN_REASON_MESH_CONFIG = 54,
1360 WLAN_REASON_MESH_CLOSE = 55,
1361 WLAN_REASON_MESH_MAX_RETRIES = 56,
1362 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1363 WLAN_REASON_MESH_INVALID_GTK = 58,
1364 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1365 WLAN_REASON_MESH_INVALID_SECURITY = 60,
1366 WLAN_REASON_MESH_PATH_ERROR = 61,
1367 WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1368 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1369 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1370 WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1371 WLAN_REASON_MESH_CHAN = 66,
1372 };
1373
1374
1375 /* Information Element IDs */
1376 enum ieee80211_eid {
1377 WLAN_EID_SSID = 0,
1378 WLAN_EID_SUPP_RATES = 1,
1379 WLAN_EID_FH_PARAMS = 2,
1380 WLAN_EID_DS_PARAMS = 3,
1381 WLAN_EID_CF_PARAMS = 4,
1382 WLAN_EID_TIM = 5,
1383 WLAN_EID_IBSS_PARAMS = 6,
1384 WLAN_EID_CHALLENGE = 16,
1385
1386 WLAN_EID_COUNTRY = 7,
1387 WLAN_EID_HP_PARAMS = 8,
1388 WLAN_EID_HP_TABLE = 9,
1389 WLAN_EID_REQUEST = 10,
1390
1391 WLAN_EID_QBSS_LOAD = 11,
1392 WLAN_EID_EDCA_PARAM_SET = 12,
1393 WLAN_EID_TSPEC = 13,
1394 WLAN_EID_TCLAS = 14,
1395 WLAN_EID_SCHEDULE = 15,
1396 WLAN_EID_TS_DELAY = 43,
1397 WLAN_EID_TCLAS_PROCESSING = 44,
1398 WLAN_EID_QOS_CAPA = 46,
1399 /* 802.11z */
1400 WLAN_EID_LINK_ID = 101,
1401 /* 802.11s */
1402 WLAN_EID_MESH_CONFIG = 113,
1403 WLAN_EID_MESH_ID = 114,
1404 WLAN_EID_LINK_METRIC_REPORT = 115,
1405 WLAN_EID_CONGESTION_NOTIFICATION = 116,
1406 WLAN_EID_PEER_MGMT = 117,
1407 WLAN_EID_CHAN_SWITCH_PARAM = 118,
1408 WLAN_EID_MESH_AWAKE_WINDOW = 119,
1409 WLAN_EID_BEACON_TIMING = 120,
1410 WLAN_EID_MCCAOP_SETUP_REQ = 121,
1411 WLAN_EID_MCCAOP_SETUP_RESP = 122,
1412 WLAN_EID_MCCAOP_ADVERT = 123,
1413 WLAN_EID_MCCAOP_TEARDOWN = 124,
1414 WLAN_EID_GANN = 125,
1415 WLAN_EID_RANN = 126,
1416 WLAN_EID_PREQ = 130,
1417 WLAN_EID_PREP = 131,
1418 WLAN_EID_PERR = 132,
1419 WLAN_EID_PXU = 137,
1420 WLAN_EID_PXUC = 138,
1421 WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1422 WLAN_EID_MIC = 140,
1423
1424 WLAN_EID_PWR_CONSTRAINT = 32,
1425 WLAN_EID_PWR_CAPABILITY = 33,
1426 WLAN_EID_TPC_REQUEST = 34,
1427 WLAN_EID_TPC_REPORT = 35,
1428 WLAN_EID_SUPPORTED_CHANNELS = 36,
1429 WLAN_EID_CHANNEL_SWITCH = 37,
1430 WLAN_EID_MEASURE_REQUEST = 38,
1431 WLAN_EID_MEASURE_REPORT = 39,
1432 WLAN_EID_QUIET = 40,
1433 WLAN_EID_IBSS_DFS = 41,
1434
1435 WLAN_EID_ERP_INFO = 42,
1436 WLAN_EID_EXT_SUPP_RATES = 50,
1437
1438 WLAN_EID_HT_CAPABILITY = 45,
1439 WLAN_EID_HT_OPERATION = 61,
1440
1441 WLAN_EID_RSN = 48,
1442 WLAN_EID_MMIE = 76,
1443 WLAN_EID_WPA = 221,
1444 WLAN_EID_GENERIC = 221,
1445 WLAN_EID_VENDOR_SPECIFIC = 221,
1446 WLAN_EID_QOS_PARAMETER = 222,
1447
1448 WLAN_EID_AP_CHAN_REPORT = 51,
1449 WLAN_EID_NEIGHBOR_REPORT = 52,
1450 WLAN_EID_RCPI = 53,
1451 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1452 WLAN_EID_ANTENNA_INFO = 64,
1453 WLAN_EID_RSNI = 65,
1454 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1455 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1456 WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1457 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1458 WLAN_EID_MULTIPLE_BSSID = 71,
1459 WLAN_EID_BSS_COEX_2040 = 72,
1460 WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1461 WLAN_EID_EXT_CAPABILITY = 127,
1462
1463 WLAN_EID_MOBILITY_DOMAIN = 54,
1464 WLAN_EID_FAST_BSS_TRANSITION = 55,
1465 WLAN_EID_TIMEOUT_INTERVAL = 56,
1466 WLAN_EID_RIC_DATA = 57,
1467 WLAN_EID_RIC_DESCRIPTOR = 75,
1468
1469 WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1470 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1471 WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1472
1473 WLAN_EID_VHT_CAPABILITY = 191,
1474 WLAN_EID_VHT_OPERATION = 192,
1475
1476 /* 802.11ad */
1477 WLAN_EID_NON_TX_BSSID_CAP = 83,
1478 WLAN_EID_WAKEUP_SCHEDULE = 143,
1479 WLAN_EID_EXT_SCHEDULE = 144,
1480 WLAN_EID_STA_AVAILABILITY = 145,
1481 WLAN_EID_DMG_TSPEC = 146,
1482 WLAN_EID_DMG_AT = 147,
1483 WLAN_EID_DMG_CAP = 148,
1484 WLAN_EID_DMG_OPERATION = 151,
1485 WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1486 WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1487 WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1488 WLAN_EID_AWAKE_WINDOW = 157,
1489 WLAN_EID_MULTI_BAND = 158,
1490 WLAN_EID_ADDBA_EXT = 159,
1491 WLAN_EID_NEXT_PCP_LIST = 160,
1492 WLAN_EID_PCP_HANDOVER = 161,
1493 WLAN_EID_DMG_LINK_MARGIN = 162,
1494 WLAN_EID_SWITCHING_STREAM = 163,
1495 WLAN_EID_SESSION_TRANSITION = 164,
1496 WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1497 WLAN_EID_CLUSTER_REPORT = 166,
1498 WLAN_EID_RELAY_CAP = 167,
1499 WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1500 WLAN_EID_BEAM_LINK_MAINT = 169,
1501 WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1502 WLAN_EID_U_PID = 171,
1503 WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1504 WLAN_EID_QUIET_PERIOD_REQ = 175,
1505 WLAN_EID_QUIET_PERIOD_RESP = 177,
1506 WLAN_EID_EPAC_POLICY = 182,
1507 WLAN_EID_CLISTER_TIME_OFF = 183,
1508 WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1509 };
1510
1511 /* Action category code */
1512 enum ieee80211_category {
1513 WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1514 WLAN_CATEGORY_QOS = 1,
1515 WLAN_CATEGORY_DLS = 2,
1516 WLAN_CATEGORY_BACK = 3,
1517 WLAN_CATEGORY_PUBLIC = 4,
1518 WLAN_CATEGORY_HT = 7,
1519 WLAN_CATEGORY_SA_QUERY = 8,
1520 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1521 WLAN_CATEGORY_TDLS = 12,
1522 WLAN_CATEGORY_MESH_ACTION = 13,
1523 WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1524 WLAN_CATEGORY_SELF_PROTECTED = 15,
1525 WLAN_CATEGORY_DMG = 16,
1526 WLAN_CATEGORY_WMM = 17,
1527 WLAN_CATEGORY_FST = 18,
1528 WLAN_CATEGORY_UNPROT_DMG = 20,
1529 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1530 WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1531 };
1532
1533 /* SPECTRUM_MGMT action code */
1534 enum ieee80211_spectrum_mgmt_actioncode {
1535 WLAN_ACTION_SPCT_MSR_REQ = 0,
1536 WLAN_ACTION_SPCT_MSR_RPRT = 1,
1537 WLAN_ACTION_SPCT_TPC_REQ = 2,
1538 WLAN_ACTION_SPCT_TPC_RPRT = 3,
1539 WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1540 };
1541
1542 /* HT action codes */
1543 enum ieee80211_ht_actioncode {
1544 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1545 WLAN_HT_ACTION_SMPS = 1,
1546 WLAN_HT_ACTION_PSMP = 2,
1547 WLAN_HT_ACTION_PCO_PHASE = 3,
1548 WLAN_HT_ACTION_CSI = 4,
1549 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1550 WLAN_HT_ACTION_COMPRESSED_BF = 6,
1551 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1552 };
1553
1554 /* Self Protected Action codes */
1555 enum ieee80211_self_protected_actioncode {
1556 WLAN_SP_RESERVED = 0,
1557 WLAN_SP_MESH_PEERING_OPEN = 1,
1558 WLAN_SP_MESH_PEERING_CONFIRM = 2,
1559 WLAN_SP_MESH_PEERING_CLOSE = 3,
1560 WLAN_SP_MGK_INFORM = 4,
1561 WLAN_SP_MGK_ACK = 5,
1562 };
1563
1564 /* Mesh action codes */
1565 enum ieee80211_mesh_actioncode {
1566 WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1567 WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1568 WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1569 WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1570 WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1571 WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1572 WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1573 WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1574 WLAN_MESH_ACTION_MCCA_TEARDOWN,
1575 WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1576 WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1577 };
1578
1579 /* Security key length */
1580 enum ieee80211_key_len {
1581 WLAN_KEY_LEN_WEP40 = 5,
1582 WLAN_KEY_LEN_WEP104 = 13,
1583 WLAN_KEY_LEN_CCMP = 16,
1584 WLAN_KEY_LEN_TKIP = 32,
1585 WLAN_KEY_LEN_AES_CMAC = 16,
1586 };
1587
1588 /* Public action codes */
1589 enum ieee80211_pub_actioncode {
1590 WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1591 };
1592
1593 /* TDLS action codes */
1594 enum ieee80211_tdls_actioncode {
1595 WLAN_TDLS_SETUP_REQUEST = 0,
1596 WLAN_TDLS_SETUP_RESPONSE = 1,
1597 WLAN_TDLS_SETUP_CONFIRM = 2,
1598 WLAN_TDLS_TEARDOWN = 3,
1599 WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1600 WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1601 WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1602 WLAN_TDLS_PEER_PSM_REQUEST = 7,
1603 WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1604 WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1605 WLAN_TDLS_DISCOVERY_REQUEST = 10,
1606 };
1607
1608 /*
1609 * TDLS capabililites to be enabled in the 5th byte of the
1610 * @WLAN_EID_EXT_CAPABILITY information element
1611 */
1612 #define WLAN_EXT_CAPA5_TDLS_ENABLED BIT(5)
1613 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED BIT(6)
1614
1615 /* TDLS specific payload type in the LLC/SNAP header */
1616 #define WLAN_TDLS_SNAP_RFTYPE 0x2
1617
1618 /**
1619 * enum - mesh synchronization method identifier
1620 *
1621 * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1622 * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1623 * that will be specified in a vendor specific information element
1624 */
1625 enum {
1626 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1627 IEEE80211_SYNC_METHOD_VENDOR = 255,
1628 };
1629
1630 /**
1631 * enum - mesh path selection protocol identifier
1632 *
1633 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1634 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1635 * be specified in a vendor specific information element
1636 */
1637 enum {
1638 IEEE80211_PATH_PROTOCOL_HWMP = 1,
1639 IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1640 };
1641
1642 /**
1643 * enum - mesh path selection metric identifier
1644 *
1645 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1646 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1647 * specified in a vendor specific information element
1648 */
1649 enum {
1650 IEEE80211_PATH_METRIC_AIRTIME = 1,
1651 IEEE80211_PATH_METRIC_VENDOR = 255,
1652 };
1653
1654 /**
1655 * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1656 *
1657 * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1658 *
1659 * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1660 * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1661 * this value
1662 * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1663 * the proactive PREQ with proactive PREP subfield set to 0
1664 * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1665 * supports the proactive PREQ with proactive PREP subfield set to 1
1666 * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1667 * the proactive RANN
1668 */
1669 enum ieee80211_root_mode_identifier {
1670 IEEE80211_ROOTMODE_NO_ROOT = 0,
1671 IEEE80211_ROOTMODE_ROOT = 1,
1672 IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1673 IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1674 IEEE80211_PROACTIVE_RANN = 4,
1675 };
1676
1677 /*
1678 * IEEE 802.11-2007 7.3.2.9 Country information element
1679 *
1680 * Minimum length is 8 octets, ie len must be evenly
1681 * divisible by 2
1682 */
1683
1684 /* Although the spec says 8 I'm seeing 6 in practice */
1685 #define IEEE80211_COUNTRY_IE_MIN_LEN 6
1686
1687 /* The Country String field of the element shall be 3 octets in length */
1688 #define IEEE80211_COUNTRY_STRING_LEN 3
1689
1690 /*
1691 * For regulatory extension stuff see IEEE 802.11-2007
1692 * Annex I (page 1141) and Annex J (page 1147). Also
1693 * review 7.3.2.9.
1694 *
1695 * When dot11RegulatoryClassesRequired is true and the
1696 * first_channel/reg_extension_id is >= 201 then the IE
1697 * compromises of the 'ext' struct represented below:
1698 *
1699 * - Regulatory extension ID - when generating IE this just needs
1700 * to be monotonically increasing for each triplet passed in
1701 * the IE
1702 * - Regulatory class - index into set of rules
1703 * - Coverage class - index into air propagation time (Table 7-27),
1704 * in microseconds, you can compute the air propagation time from
1705 * the index by multiplying by 3, so index 10 yields a propagation
1706 * of 10 us. Valid values are 0-31, values 32-255 are not defined
1707 * yet. A value of 0 inicates air propagation of <= 1 us.
1708 *
1709 * See also Table I.2 for Emission limit sets and table
1710 * I.3 for Behavior limit sets. Table J.1 indicates how to map
1711 * a reg_class to an emission limit set and behavior limit set.
1712 */
1713 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1714
1715 /*
1716 * Channels numbers in the IE must be monotonically increasing
1717 * if dot11RegulatoryClassesRequired is not true.
1718 *
1719 * If dot11RegulatoryClassesRequired is true consecutive
1720 * subband triplets following a regulatory triplet shall
1721 * have monotonically increasing first_channel number fields.
1722 *
1723 * Channel numbers shall not overlap.
1724 *
1725 * Note that max_power is signed.
1726 */
1727 struct ieee80211_country_ie_triplet {
1728 union {
1729 struct {
1730 u8 first_channel;
1731 u8 num_channels;
1732 s8 max_power;
1733 } __attribute__ ((packed)) chans;
1734 struct {
1735 u8 reg_extension_id;
1736 u8 reg_class;
1737 u8 coverage_class;
1738 } __attribute__ ((packed)) ext;
1739 };
1740 } __attribute__ ((packed));
1741
1742 enum ieee80211_timeout_interval_type {
1743 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1744 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1745 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1746 };
1747
1748 /* BACK action code */
1749 enum ieee80211_back_actioncode {
1750 WLAN_ACTION_ADDBA_REQ = 0,
1751 WLAN_ACTION_ADDBA_RESP = 1,
1752 WLAN_ACTION_DELBA = 2,
1753 };
1754
1755 /* BACK (block-ack) parties */
1756 enum ieee80211_back_parties {
1757 WLAN_BACK_RECIPIENT = 0,
1758 WLAN_BACK_INITIATOR = 1,
1759 };
1760
1761 /* SA Query action */
1762 enum ieee80211_sa_query_action {
1763 WLAN_ACTION_SA_QUERY_REQUEST = 0,
1764 WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1765 };
1766
1767
1768 /* cipher suite selectors */
1769 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
1770 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
1771 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
1772 /* reserved: 0x000FAC03 */
1773 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
1774 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
1775 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06
1776 #define WLAN_CIPHER_SUITE_GCMP 0x000FAC08
1777
1778 #define WLAN_CIPHER_SUITE_SMS4 0x00147201
1779
1780 /* AKM suite selectors */
1781 #define WLAN_AKM_SUITE_8021X 0x000FAC01
1782 #define WLAN_AKM_SUITE_PSK 0x000FAC02
1783 #define WLAN_AKM_SUITE_SAE 0x000FAC08
1784 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09
1785
1786 #define WLAN_MAX_KEY_LEN 32
1787
1788 #define WLAN_PMKID_LEN 16
1789
1790 #define WLAN_OUI_WFA 0x506f9a
1791 #define WLAN_OUI_TYPE_WFA_P2P 9
1792 #define WLAN_OUI_MICROSOFT 0x0050f2
1793 #define WLAN_OUI_TYPE_MICROSOFT_WPA 1
1794 #define WLAN_OUI_TYPE_MICROSOFT_WMM 2
1795 #define WLAN_OUI_TYPE_MICROSOFT_WPS 4
1796
1797 /*
1798 * WMM/802.11e Tspec Element
1799 */
1800 #define IEEE80211_WMM_IE_TSPEC_TID_MASK 0x0F
1801 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT 1
1802
1803 enum ieee80211_tspec_status_code {
1804 IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1805 IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1806 };
1807
1808 struct ieee80211_tspec_ie {
1809 u8 element_id;
1810 u8 len;
1811 u8 oui[3];
1812 u8 oui_type;
1813 u8 oui_subtype;
1814 u8 version;
1815 __le16 tsinfo;
1816 u8 tsinfo_resvd;
1817 __le16 nominal_msdu;
1818 __le16 max_msdu;
1819 __le32 min_service_int;
1820 __le32 max_service_int;
1821 __le32 inactivity_int;
1822 __le32 suspension_int;
1823 __le32 service_start_time;
1824 __le32 min_data_rate;
1825 __le32 mean_data_rate;
1826 __le32 peak_data_rate;
1827 __le32 max_burst_size;
1828 __le32 delay_bound;
1829 __le32 min_phy_rate;
1830 __le16 sba;
1831 __le16 medium_time;
1832 } __packed;
1833
1834 /**
1835 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1836 * @hdr: the frame
1837 *
1838 * The qos ctrl bytes come after the frame_control, duration, seq_num
1839 * and 3 or 4 addresses of length ETH_ALEN.
1840 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1841 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1842 */
1843 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1844 {
1845 if (ieee80211_has_a4(hdr->frame_control))
1846 return (u8 *)hdr + 30;
1847 else
1848 return (u8 *)hdr + 24;
1849 }
1850
1851 /**
1852 * ieee80211_get_SA - get pointer to SA
1853 * @hdr: the frame
1854 *
1855 * Given an 802.11 frame, this function returns the offset
1856 * to the source address (SA). It does not verify that the
1857 * header is long enough to contain the address, and the
1858 * header must be long enough to contain the frame control
1859 * field.
1860 */
1861 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1862 {
1863 if (ieee80211_has_a4(hdr->frame_control))
1864 return hdr->addr4;
1865 if (ieee80211_has_fromds(hdr->frame_control))
1866 return hdr->addr3;
1867 return hdr->addr2;
1868 }
1869
1870 /**
1871 * ieee80211_get_DA - get pointer to DA
1872 * @hdr: the frame
1873 *
1874 * Given an 802.11 frame, this function returns the offset
1875 * to the destination address (DA). It does not verify that
1876 * the header is long enough to contain the address, and the
1877 * header must be long enough to contain the frame control
1878 * field.
1879 */
1880 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1881 {
1882 if (ieee80211_has_tods(hdr->frame_control))
1883 return hdr->addr3;
1884 else
1885 return hdr->addr1;
1886 }
1887
1888 /**
1889 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1890 * @hdr: the frame (buffer must include at least the first octet of payload)
1891 */
1892 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1893 {
1894 if (ieee80211_is_disassoc(hdr->frame_control) ||
1895 ieee80211_is_deauth(hdr->frame_control))
1896 return true;
1897
1898 if (ieee80211_is_action(hdr->frame_control)) {
1899 u8 *category;
1900
1901 /*
1902 * Action frames, excluding Public Action frames, are Robust
1903 * Management Frames. However, if we are looking at a Protected
1904 * frame, skip the check since the data may be encrypted and
1905 * the frame has already been found to be a Robust Management
1906 * Frame (by the other end).
1907 */
1908 if (ieee80211_has_protected(hdr->frame_control))
1909 return true;
1910 category = ((u8 *) hdr) + 24;
1911 return *category != WLAN_CATEGORY_PUBLIC &&
1912 *category != WLAN_CATEGORY_HT &&
1913 *category != WLAN_CATEGORY_SELF_PROTECTED &&
1914 *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1915 }
1916
1917 return false;
1918 }
1919
1920 /**
1921 * ieee80211_is_public_action - check if frame is a public action frame
1922 * @hdr: the frame
1923 * @len: length of the frame
1924 */
1925 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1926 size_t len)
1927 {
1928 struct ieee80211_mgmt *mgmt = (void *)hdr;
1929
1930 if (len < IEEE80211_MIN_ACTION_SIZE)
1931 return false;
1932 if (!ieee80211_is_action(hdr->frame_control))
1933 return false;
1934 return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1935 }
1936
1937 /**
1938 * ieee80211_fhss_chan_to_freq - get channel frequency
1939 * @channel: the FHSS channel
1940 *
1941 * Convert IEEE802.11 FHSS channel to frequency (MHz)
1942 * Ref IEEE 802.11-2007 section 14.6
1943 */
1944 static inline int ieee80211_fhss_chan_to_freq(int channel)
1945 {
1946 if ((channel > 1) && (channel < 96))
1947 return channel + 2400;
1948 else
1949 return -1;
1950 }
1951
1952 /**
1953 * ieee80211_freq_to_fhss_chan - get channel
1954 * @freq: the channels frequency
1955 *
1956 * Convert frequency (MHz) to IEEE802.11 FHSS channel
1957 * Ref IEEE 802.11-2007 section 14.6
1958 */
1959 static inline int ieee80211_freq_to_fhss_chan(int freq)
1960 {
1961 if ((freq > 2401) && (freq < 2496))
1962 return freq - 2400;
1963 else
1964 return -1;
1965 }
1966
1967 /**
1968 * ieee80211_dsss_chan_to_freq - get channel center frequency
1969 * @channel: the DSSS channel
1970 *
1971 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1972 * Ref IEEE 802.11-2007 section 15.6
1973 */
1974 static inline int ieee80211_dsss_chan_to_freq(int channel)
1975 {
1976 if ((channel > 0) && (channel < 14))
1977 return 2407 + (channel * 5);
1978 else if (channel == 14)
1979 return 2484;
1980 else
1981 return -1;
1982 }
1983
1984 /**
1985 * ieee80211_freq_to_dsss_chan - get channel
1986 * @freq: the frequency
1987 *
1988 * Convert frequency (MHz) to IEEE802.11 DSSS channel
1989 * Ref IEEE 802.11-2007 section 15.6
1990 *
1991 * This routine selects the channel with the closest center frequency.
1992 */
1993 static inline int ieee80211_freq_to_dsss_chan(int freq)
1994 {
1995 if ((freq >= 2410) && (freq < 2475))
1996 return (freq - 2405) / 5;
1997 else if ((freq >= 2482) && (freq < 2487))
1998 return 14;
1999 else
2000 return -1;
2001 }
2002
2003 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
2004 * Ref IEEE 802.11-2007 section 18.4.6.2
2005 *
2006 * The channels and frequencies are the same as those defined for DSSS
2007 */
2008 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
2009 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
2010
2011 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
2012 * Ref IEEE 802.11-2007 section 19.4.2
2013 */
2014 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
2015 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
2016
2017 /**
2018 * ieee80211_ofdm_chan_to_freq - get channel center frequency
2019 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
2020 * @channel: the OFDM channel
2021 *
2022 * Convert IEEE802.11 OFDM channel to center frequency (MHz)
2023 * Ref IEEE 802.11-2007 section 17.3.8.3.2
2024 */
2025 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
2026 {
2027 if ((channel > 0) && (channel <= 200) &&
2028 (s_freq >= 4000))
2029 return s_freq + (channel * 5);
2030 else
2031 return -1;
2032 }
2033
2034 /**
2035 * ieee80211_freq_to_ofdm_channel - get channel
2036 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
2037 * @freq: the frequency
2038 *
2039 * Convert frequency (MHz) to IEEE802.11 OFDM channel
2040 * Ref IEEE 802.11-2007 section 17.3.8.3.2
2041 *
2042 * This routine selects the channel with the closest center frequency.
2043 */
2044 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
2045 {
2046 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
2047 (s_freq >= 4000))
2048 return (freq + 2 - s_freq) / 5;
2049 else
2050 return -1;
2051 }
2052
2053 /**
2054 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2055 * @tu: the TUs
2056 */
2057 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2058 {
2059 return 1024 * tu;
2060 }
2061
2062 /**
2063 * ieee80211_check_tim - check if AID bit is set in TIM
2064 * @tim: the TIM IE
2065 * @tim_len: length of the TIM IE
2066 * @aid: the AID to look for
2067 */
2068 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2069 u8 tim_len, u16 aid)
2070 {
2071 u8 mask;
2072 u8 index, indexn1, indexn2;
2073
2074 if (unlikely(!tim || tim_len < sizeof(*tim)))
2075 return false;
2076
2077 aid &= 0x3fff;
2078 index = aid / 8;
2079 mask = 1 << (aid & 7);
2080
2081 indexn1 = tim->bitmap_ctrl & 0xfe;
2082 indexn2 = tim_len + indexn1 - 4;
2083
2084 if (index < indexn1 || index > indexn2)
2085 return false;
2086
2087 index -= indexn1;
2088
2089 return !!(tim->virtual_map[index] & mask);
2090 }
2091
2092 #endif /* LINUX_IEEE80211_H */
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