ieee80211: add IEEE80211_COUNTRY_STRING_LEN definition
[carl9170fw.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 /*
19  * DS bit usage
20  *
21  * TA = transmitter address
22  * RA = receiver address
23  * DA = destination address
24  * SA = source address
25  *
26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
27  * -----------------------------------------------------------------
28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
29  *  0       1       DA      BSSID   SA      -       AP -> STA
30  *  1       0       BSSID   SA      DA      -       AP <- STA
31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
32  */
33
34 #define FCS_LEN 4
35
36 #define IEEE80211_FCTL_VERS             0x0003
37 #define IEEE80211_FCTL_FTYPE            0x000c
38 #define IEEE80211_FCTL_STYPE            0x00f0
39 #define IEEE80211_FCTL_TODS             0x0100
40 #define IEEE80211_FCTL_FROMDS           0x0200
41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
42 #define IEEE80211_FCTL_RETRY            0x0800
43 #define IEEE80211_FCTL_PM               0x1000
44 #define IEEE80211_FCTL_MOREDATA         0x2000
45 #define IEEE80211_FCTL_PROTECTED        0x4000
46 #define IEEE80211_FCTL_ORDER            0x8000
47
48 #define IEEE80211_SCTL_FRAG             0x000F
49 #define IEEE80211_SCTL_SEQ              0xFFF0
50
51 #define IEEE80211_FTYPE_MGMT            0x0000
52 #define IEEE80211_FTYPE_CTL             0x0004
53 #define IEEE80211_FTYPE_DATA            0x0008
54
55 /* management */
56 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
57 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
58 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
59 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
60 #define IEEE80211_STYPE_PROBE_REQ       0x0040
61 #define IEEE80211_STYPE_PROBE_RESP      0x0050
62 #define IEEE80211_STYPE_BEACON          0x0080
63 #define IEEE80211_STYPE_ATIM            0x0090
64 #define IEEE80211_STYPE_DISASSOC        0x00A0
65 #define IEEE80211_STYPE_AUTH            0x00B0
66 #define IEEE80211_STYPE_DEAUTH          0x00C0
67 #define IEEE80211_STYPE_ACTION          0x00D0
68
69 /* control */
70 #define IEEE80211_STYPE_BACK_REQ        0x0080
71 #define IEEE80211_STYPE_BACK            0x0090
72 #define IEEE80211_STYPE_PSPOLL          0x00A0
73 #define IEEE80211_STYPE_RTS             0x00B0
74 #define IEEE80211_STYPE_CTS             0x00C0
75 #define IEEE80211_STYPE_ACK             0x00D0
76 #define IEEE80211_STYPE_CFEND           0x00E0
77 #define IEEE80211_STYPE_CFENDACK        0x00F0
78
79 /* data */
80 #define IEEE80211_STYPE_DATA                    0x0000
81 #define IEEE80211_STYPE_DATA_CFACK              0x0010
82 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
83 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
84 #define IEEE80211_STYPE_NULLFUNC                0x0040
85 #define IEEE80211_STYPE_CFACK                   0x0050
86 #define IEEE80211_STYPE_CFPOLL                  0x0060
87 #define IEEE80211_STYPE_CFACKPOLL               0x0070
88 #define IEEE80211_STYPE_QOS_DATA                0x0080
89 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
90 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
91 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
92 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
93 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
94 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
95 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
96
97
98 /* miscellaneous IEEE 802.11 constants */
99 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
100 #define IEEE80211_MAX_RTS_THRESHOLD     2353
101 #define IEEE80211_MAX_AID               2007
102 #define IEEE80211_MAX_TIM_LEN           251
103 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
104    6.2.1.1.2.
105
106    802.11e clarifies the figure in section 7.1.2. The frame body is
107    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
108 #define IEEE80211_MAX_DATA_LEN          2304
109 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
110 #define IEEE80211_MAX_FRAME_LEN         2352
111
112 #define IEEE80211_MAX_SSID_LEN          32
113
114 #define IEEE80211_MAX_MESH_ID_LEN       32
115
116 #define IEEE80211_QOS_CTL_LEN           2
117 #define IEEE80211_QOS_CTL_TID_MASK      0x000F
118 #define IEEE80211_QOS_CTL_TAG1D_MASK    0x0007
119
120 /* U-APSD queue for WMM IEs sent by AP */
121 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
122 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
123
124 /* U-APSD queues for WMM IEs sent by STA */
125 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
126 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
127 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
128 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
129 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
130
131 /* U-APSD max SP length for WMM IEs sent by STA */
132 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
133 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
134 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
135 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
136 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
137 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
138
139 #define IEEE80211_HT_CTL_LEN            4
140
141 struct ieee80211_hdr {
142         __le16 frame_control;
143         __le16 duration_id;
144         u8 addr1[6];
145         u8 addr2[6];
146         u8 addr3[6];
147         __le16 seq_ctrl;
148         u8 addr4[6];
149 } __attribute__ ((packed));
150
151 struct ieee80211_hdr_3addr {
152         __le16 frame_control;
153         __le16 duration_id;
154         u8 addr1[6];
155         u8 addr2[6];
156         u8 addr3[6];
157         __le16 seq_ctrl;
158 } __attribute__ ((packed));
159
160 struct ieee80211_qos_hdr {
161         __le16 frame_control;
162         __le16 duration_id;
163         u8 addr1[6];
164         u8 addr2[6];
165         u8 addr3[6];
166         __le16 seq_ctrl;
167         __le16 qos_ctrl;
168 } __attribute__ ((packed));
169
170 /**
171  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
172  * @fc: frame control bytes in little-endian byteorder
173  */
174 static inline int ieee80211_has_tods(__le16 fc)
175 {
176         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
177 }
178
179 /**
180  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
181  * @fc: frame control bytes in little-endian byteorder
182  */
183 static inline int ieee80211_has_fromds(__le16 fc)
184 {
185         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
186 }
187
188 /**
189  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
190  * @fc: frame control bytes in little-endian byteorder
191  */
192 static inline int ieee80211_has_a4(__le16 fc)
193 {
194         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
195         return (fc & tmp) == tmp;
196 }
197
198 /**
199  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
200  * @fc: frame control bytes in little-endian byteorder
201  */
202 static inline int ieee80211_has_morefrags(__le16 fc)
203 {
204         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
205 }
206
207 /**
208  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
209  * @fc: frame control bytes in little-endian byteorder
210  */
211 static inline int ieee80211_has_retry(__le16 fc)
212 {
213         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
214 }
215
216 /**
217  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
218  * @fc: frame control bytes in little-endian byteorder
219  */
220 static inline int ieee80211_has_pm(__le16 fc)
221 {
222         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
223 }
224
225 /**
226  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
227  * @fc: frame control bytes in little-endian byteorder
228  */
229 static inline int ieee80211_has_moredata(__le16 fc)
230 {
231         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
232 }
233
234 /**
235  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
236  * @fc: frame control bytes in little-endian byteorder
237  */
238 static inline int ieee80211_has_protected(__le16 fc)
239 {
240         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
241 }
242
243 /**
244  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
245  * @fc: frame control bytes in little-endian byteorder
246  */
247 static inline int ieee80211_has_order(__le16 fc)
248 {
249         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
250 }
251
252 /**
253  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
254  * @fc: frame control bytes in little-endian byteorder
255  */
256 static inline int ieee80211_is_mgmt(__le16 fc)
257 {
258         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
259                cpu_to_le16(IEEE80211_FTYPE_MGMT);
260 }
261
262 /**
263  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
264  * @fc: frame control bytes in little-endian byteorder
265  */
266 static inline int ieee80211_is_ctl(__le16 fc)
267 {
268         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
269                cpu_to_le16(IEEE80211_FTYPE_CTL);
270 }
271
272 /**
273  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
274  * @fc: frame control bytes in little-endian byteorder
275  */
276 static inline int ieee80211_is_data(__le16 fc)
277 {
278         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
279                cpu_to_le16(IEEE80211_FTYPE_DATA);
280 }
281
282 /**
283  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
284  * @fc: frame control bytes in little-endian byteorder
285  */
286 static inline int ieee80211_is_data_qos(__le16 fc)
287 {
288         /*
289          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
290          * to check the one bit
291          */
292         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
293                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
294 }
295
296 /**
297  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
298  * @fc: frame control bytes in little-endian byteorder
299  */
300 static inline int ieee80211_is_data_present(__le16 fc)
301 {
302         /*
303          * mask with 0x40 and test that that bit is clear to only return true
304          * for the data-containing substypes.
305          */
306         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
307                cpu_to_le16(IEEE80211_FTYPE_DATA);
308 }
309
310 /**
311  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
312  * @fc: frame control bytes in little-endian byteorder
313  */
314 static inline int ieee80211_is_assoc_req(__le16 fc)
315 {
316         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
317                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
318 }
319
320 /**
321  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
322  * @fc: frame control bytes in little-endian byteorder
323  */
324 static inline int ieee80211_is_assoc_resp(__le16 fc)
325 {
326         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
327                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
328 }
329
330 /**
331  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
332  * @fc: frame control bytes in little-endian byteorder
333  */
334 static inline int ieee80211_is_reassoc_req(__le16 fc)
335 {
336         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
337                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
338 }
339
340 /**
341  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
342  * @fc: frame control bytes in little-endian byteorder
343  */
344 static inline int ieee80211_is_reassoc_resp(__le16 fc)
345 {
346         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
347                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
348 }
349
350 /**
351  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
352  * @fc: frame control bytes in little-endian byteorder
353  */
354 static inline int ieee80211_is_probe_req(__le16 fc)
355 {
356         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
357                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
358 }
359
360 /**
361  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
362  * @fc: frame control bytes in little-endian byteorder
363  */
364 static inline int ieee80211_is_probe_resp(__le16 fc)
365 {
366         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
367                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
368 }
369
370 /**
371  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
372  * @fc: frame control bytes in little-endian byteorder
373  */
374 static inline int ieee80211_is_beacon(__le16 fc)
375 {
376         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
377                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
378 }
379
380 /**
381  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
382  * @fc: frame control bytes in little-endian byteorder
383  */
384 static inline int ieee80211_is_atim(__le16 fc)
385 {
386         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
387                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
388 }
389
390 /**
391  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
392  * @fc: frame control bytes in little-endian byteorder
393  */
394 static inline int ieee80211_is_disassoc(__le16 fc)
395 {
396         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
397                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
398 }
399
400 /**
401  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
402  * @fc: frame control bytes in little-endian byteorder
403  */
404 static inline int ieee80211_is_auth(__le16 fc)
405 {
406         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
407                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
408 }
409
410 /**
411  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
412  * @fc: frame control bytes in little-endian byteorder
413  */
414 static inline int ieee80211_is_deauth(__le16 fc)
415 {
416         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
417                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
418 }
419
420 /**
421  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
422  * @fc: frame control bytes in little-endian byteorder
423  */
424 static inline int ieee80211_is_action(__le16 fc)
425 {
426         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
427                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
428 }
429
430 /**
431  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
432  * @fc: frame control bytes in little-endian byteorder
433  */
434 static inline int ieee80211_is_back_req(__le16 fc)
435 {
436         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
437                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
438 }
439
440 /**
441  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
442  * @fc: frame control bytes in little-endian byteorder
443  */
444 static inline int ieee80211_is_back(__le16 fc)
445 {
446         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
447                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
448 }
449
450 /**
451  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
452  * @fc: frame control bytes in little-endian byteorder
453  */
454 static inline int ieee80211_is_pspoll(__le16 fc)
455 {
456         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
457                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
458 }
459
460 /**
461  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
462  * @fc: frame control bytes in little-endian byteorder
463  */
464 static inline int ieee80211_is_rts(__le16 fc)
465 {
466         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
467                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
468 }
469
470 /**
471  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
472  * @fc: frame control bytes in little-endian byteorder
473  */
474 static inline int ieee80211_is_cts(__le16 fc)
475 {
476         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
477                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
478 }
479
480 /**
481  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
482  * @fc: frame control bytes in little-endian byteorder
483  */
484 static inline int ieee80211_is_ack(__le16 fc)
485 {
486         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
487                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
488 }
489
490 /**
491  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
492  * @fc: frame control bytes in little-endian byteorder
493  */
494 static inline int ieee80211_is_cfend(__le16 fc)
495 {
496         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
497                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
498 }
499
500 /**
501  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
502  * @fc: frame control bytes in little-endian byteorder
503  */
504 static inline int ieee80211_is_cfendack(__le16 fc)
505 {
506         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
507                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
508 }
509
510 /**
511  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
512  * @fc: frame control bytes in little-endian byteorder
513  */
514 static inline int ieee80211_is_nullfunc(__le16 fc)
515 {
516         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
517                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
518 }
519
520 /**
521  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
522  * @fc: frame control bytes in little-endian byteorder
523  */
524 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
525 {
526         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
527                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
528 }
529
530 static inline unsigned int ieee80211_hdrlen(__le16 fc)
531 {
532         unsigned int hdrlen = 24;
533
534         if (ieee80211_has_a4(fc))
535                 hdrlen = 30;
536
537         if (ieee80211_is_data_qos(fc)) {
538                 hdrlen += IEEE80211_QOS_CTL_LEN;
539                 if (ieee80211_has_order(fc))
540                         hdrlen += IEEE80211_HT_CTL_LEN;
541         }
542
543         return hdrlen;
544 }
545
546 struct ieee80211s_hdr {
547         u8 flags;
548         u8 ttl;
549         __le32 seqnum;
550         u8 eaddr1[6];
551         u8 eaddr2[6];
552 } __attribute__ ((packed));
553
554 /* Mesh flags */
555 #define MESH_FLAGS_AE_A4        0x1
556 #define MESH_FLAGS_AE_A5_A6     0x2
557 #define MESH_FLAGS_AE           0x3
558 #define MESH_FLAGS_PS_DEEP      0x4
559
560 /**
561  * struct ieee80211_quiet_ie
562  *
563  * This structure refers to "Quiet information element"
564  */
565 struct ieee80211_quiet_ie {
566         u8 count;
567         u8 period;
568         __le16 duration;
569         __le16 offset;
570 } __attribute__ ((packed));
571
572 /**
573  * struct ieee80211_msrment_ie
574  *
575  * This structure refers to "Measurement Request/Report information element"
576  */
577 struct ieee80211_msrment_ie {
578         u8 token;
579         u8 mode;
580         u8 type;
581         u8 request[0];
582 } __attribute__ ((packed));
583
584 /**
585  * struct ieee80211_channel_sw_ie
586  *
587  * This structure refers to "Channel Switch Announcement information element"
588  */
589 struct ieee80211_channel_sw_ie {
590         u8 mode;
591         u8 new_ch_num;
592         u8 count;
593 } __attribute__ ((packed));
594
595 /**
596  * struct ieee80211_tim
597  *
598  * This structure refers to "Traffic Indication Map information element"
599  */
600 struct ieee80211_tim_ie {
601         u8 dtim_count;
602         u8 dtim_period;
603         u8 bitmap_ctrl;
604         /* variable size: 1 - 251 bytes */
605         u8 virtual_map[1];
606 } __attribute__ ((packed));
607
608 /**
609  * struct ieee80211_meshconf_ie
610  *
611  * This structure refers to "Mesh Configuration information element"
612  */
613 struct ieee80211_meshconf_ie {
614         u8 meshconf_psel;
615         u8 meshconf_pmetric;
616         u8 meshconf_congest;
617         u8 meshconf_synch;
618         u8 meshconf_auth;
619         u8 meshconf_form;
620         u8 meshconf_cap;
621 } __attribute__ ((packed));
622
623 /**
624  * struct ieee80211_rann_ie
625  *
626  * This structure refers to "Root Announcement information element"
627  */
628 struct ieee80211_rann_ie {
629         u8 rann_flags;
630         u8 rann_hopcount;
631         u8 rann_ttl;
632         u8 rann_addr[6];
633         u32 rann_seq;
634         u32 rann_metric;
635 } __attribute__ ((packed));
636
637 #define WLAN_SA_QUERY_TR_ID_LEN 2
638
639 struct ieee80211_mgmt {
640         __le16 frame_control;
641         __le16 duration;
642         u8 da[6];
643         u8 sa[6];
644         u8 bssid[6];
645         __le16 seq_ctrl;
646         union {
647                 struct {
648                         __le16 auth_alg;
649                         __le16 auth_transaction;
650                         __le16 status_code;
651                         /* possibly followed by Challenge text */
652                         u8 variable[0];
653                 } __attribute__ ((packed)) auth;
654                 struct {
655                         __le16 reason_code;
656                 } __attribute__ ((packed)) deauth;
657                 struct {
658                         __le16 capab_info;
659                         __le16 listen_interval;
660                         /* followed by SSID and Supported rates */
661                         u8 variable[0];
662                 } __attribute__ ((packed)) assoc_req;
663                 struct {
664                         __le16 capab_info;
665                         __le16 status_code;
666                         __le16 aid;
667                         /* followed by Supported rates */
668                         u8 variable[0];
669                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
670                 struct {
671                         __le16 capab_info;
672                         __le16 listen_interval;
673                         u8 current_ap[6];
674                         /* followed by SSID and Supported rates */
675                         u8 variable[0];
676                 } __attribute__ ((packed)) reassoc_req;
677                 struct {
678                         __le16 reason_code;
679                 } __attribute__ ((packed)) disassoc;
680                 struct {
681                         __le64 timestamp;
682                         __le16 beacon_int;
683                         __le16 capab_info;
684                         /* followed by some of SSID, Supported rates,
685                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
686                         u8 variable[0];
687                 } __attribute__ ((packed)) beacon;
688                 struct {
689                         /* only variable items: SSID, Supported rates */
690                         u8 variable[0];
691                 } __attribute__ ((packed)) probe_req;
692                 struct {
693                         __le64 timestamp;
694                         __le16 beacon_int;
695                         __le16 capab_info;
696                         /* followed by some of SSID, Supported rates,
697                          * FH Params, DS Params, CF Params, IBSS Params */
698                         u8 variable[0];
699                 } __attribute__ ((packed)) probe_resp;
700                 struct {
701                         u8 category;
702                         union {
703                                 struct {
704                                         u8 action_code;
705                                         u8 dialog_token;
706                                         u8 status_code;
707                                         u8 variable[0];
708                                 } __attribute__ ((packed)) wme_action;
709                                 struct{
710                                         u8 action_code;
711                                         u8 element_id;
712                                         u8 length;
713                                         struct ieee80211_channel_sw_ie sw_elem;
714                                 } __attribute__((packed)) chan_switch;
715                                 struct{
716                                         u8 action_code;
717                                         u8 dialog_token;
718                                         u8 element_id;
719                                         u8 length;
720                                         struct ieee80211_msrment_ie msr_elem;
721                                 } __attribute__((packed)) measurement;
722                                 struct{
723                                         u8 action_code;
724                                         u8 dialog_token;
725                                         __le16 capab;
726                                         __le16 timeout;
727                                         __le16 start_seq_num;
728                                 } __attribute__((packed)) addba_req;
729                                 struct{
730                                         u8 action_code;
731                                         u8 dialog_token;
732                                         __le16 status;
733                                         __le16 capab;
734                                         __le16 timeout;
735                                 } __attribute__((packed)) addba_resp;
736                                 struct{
737                                         u8 action_code;
738                                         __le16 params;
739                                         __le16 reason_code;
740                                 } __attribute__((packed)) delba;
741                                 struct{
742                                         u8 action_code;
743                                         /* capab_info for open and confirm,
744                                          * reason for close
745                                          */
746                                         __le16 aux;
747                                         /* Followed in plink_confirm by status
748                                          * code, AID and supported rates,
749                                          * and directly by supported rates in
750                                          * plink_open and plink_close
751                                          */
752                                         u8 variable[0];
753                                 } __attribute__((packed)) plink_action;
754                                 struct{
755                                         u8 action_code;
756                                         u8 variable[0];
757                                 } __attribute__((packed)) mesh_action;
758                                 struct {
759                                         u8 action;
760                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
761                                 } __attribute__ ((packed)) sa_query;
762                                 struct {
763                                         u8 action;
764                                         u8 smps_control;
765                                 } __attribute__ ((packed)) ht_smps;
766                         } u;
767                 } __attribute__ ((packed)) action;
768         } u;
769 } __attribute__ ((packed));
770
771 /* mgmt header + 1 byte category code */
772 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
773
774
775 /* Management MIC information element (IEEE 802.11w) */
776 struct ieee80211_mmie {
777         u8 element_id;
778         u8 length;
779         __le16 key_id;
780         u8 sequence_number[6];
781         u8 mic[8];
782 } __attribute__ ((packed));
783
784 /* Control frames */
785 struct ieee80211_rts {
786         __le16 frame_control;
787         __le16 duration;
788         u8 ra[6];
789         u8 ta[6];
790 } __attribute__ ((packed));
791
792 struct ieee80211_cts {
793         __le16 frame_control;
794         __le16 duration;
795         u8 ra[6];
796 } __attribute__ ((packed));
797
798 struct ieee80211_pspoll {
799         __le16 frame_control;
800         __le16 aid;
801         u8 bssid[6];
802         u8 ta[6];
803 } __attribute__ ((packed));
804
805 /**
806  * struct ieee80211_bar - HT Block Ack Request
807  *
808  * This structure refers to "HT BlockAckReq" as
809  * described in 802.11n draft section 7.2.1.7.1
810  */
811 struct ieee80211_bar {
812         __le16 frame_control;
813         __le16 duration;
814         __u8 ra[6];
815         __u8 ta[6];
816         __le16 control;
817         __le16 start_seq_num;
818 } __attribute__((packed)) __aligned(4);
819
820 /* 802.11 BA(R) control masks */
821 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
822 #define IEEE80211_BAR_CTRL_MULTI_TID             0x0002
823 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
824
825 /**
826  * struct ieee80211_ba - HT Block Ack
827  *
828  * This structure refers to "HT BlockAck" as
829  * described in 802.11n draft section 7.2.1.8.1
830  */
831 struct ieee80211_ba {
832         __le16 frame_control;
833         __le16 duration;
834         u8 ra[6];
835         u8 ta[6];
836         __le16 control;
837
838         __le16 start_seq_num;
839         u8 bitmap[8];
840 } __attribute__((packed));
841
842 #define IEEE80211_HT_MCS_MASK_LEN               10
843
844 /**
845  * struct ieee80211_mcs_info - MCS information
846  * @rx_mask: RX mask
847  * @rx_highest: highest supported RX rate. If set represents
848  *      the highest supported RX data rate in units of 1 Mbps.
849  *      If this field is 0 this value should not be used to
850  *      consider the highest RX data rate supported.
851  * @tx_params: TX parameters
852  */
853 struct ieee80211_mcs_info {
854         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
855         __le16 rx_highest;
856         u8 tx_params;
857         u8 reserved[3];
858 } __attribute__((packed));
859
860 /* 802.11n HT capability MSC set */
861 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
862 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
863 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
864 /* value 0 == 1 stream etc */
865 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
866 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
867 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
868 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
869
870 /*
871  * 802.11n D5.0 20.3.5 / 20.6 says:
872  * - indices 0 to 7 and 32 are single spatial stream
873  * - 8 to 31 are multiple spatial streams using equal modulation
874  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
875  * - remainder are multiple spatial streams using unequal modulation
876  */
877 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
878 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
879         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
880
881 /**
882  * struct ieee80211_ht_cap - HT capabilities
883  *
884  * This structure is the "HT capabilities element" as
885  * described in 802.11n D5.0 7.3.2.57
886  */
887 struct ieee80211_ht_cap {
888         __le16 cap_info;
889         u8 ampdu_params_info;
890
891         /* 16 bytes MCS information */
892         struct ieee80211_mcs_info mcs;
893
894         __le16 extended_ht_cap_info;
895         __le32 tx_BF_cap_info;
896         u8 antenna_selection_info;
897 } __attribute__ ((packed));
898
899 /* 802.11n HT capabilities masks (for cap_info) */
900 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
901 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
902 #define IEEE80211_HT_CAP_SM_PS                  0x000C
903 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
904 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
905 #define IEEE80211_HT_CAP_SGI_20                 0x0020
906 #define IEEE80211_HT_CAP_SGI_40                 0x0040
907 #define IEEE80211_HT_CAP_TX_STBC                0x0080
908 #define IEEE80211_HT_CAP_RX_STBC                0x0300
909 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
910 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
911 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
912 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
913 #define IEEE80211_HT_CAP_RESERVED               0x2000
914 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
915 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
916
917 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
918 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
919 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
920 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
921
922 /*
923  * Maximum length of AMPDU that the STA can receive.
924  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
925  */
926 enum ieee80211_max_ampdu_length_exp {
927         IEEE80211_HT_MAX_AMPDU_8K = 0,
928         IEEE80211_HT_MAX_AMPDU_16K = 1,
929         IEEE80211_HT_MAX_AMPDU_32K = 2,
930         IEEE80211_HT_MAX_AMPDU_64K = 3
931 };
932
933 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
934
935 /* Minimum MPDU start spacing */
936 enum ieee80211_min_mpdu_spacing {
937         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
938         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
939         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
940         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
941         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
942         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
943         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
944         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
945 };
946
947 /**
948  * struct ieee80211_ht_info - HT information
949  *
950  * This structure is the "HT information element" as
951  * described in 802.11n D5.0 7.3.2.58
952  */
953 struct ieee80211_ht_info {
954         u8 control_chan;
955         u8 ht_param;
956         __le16 operation_mode;
957         __le16 stbc_param;
958         u8 basic_set[16];
959 } __attribute__ ((packed));
960
961 /* for ht_param */
962 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
963 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
964 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
965 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
966 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
967 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
968 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
969 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
970
971 /* for operation_mode */
972 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
973 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
974 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
975 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
976 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
977 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
978 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
979
980 /* for stbc_param */
981 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
982 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
983 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
984 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
985 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
986 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
987
988
989 /* block-ack parameters */
990 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
991 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
992 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
993 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
994 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
995
996 /*
997  * A-PMDU buffer sizes
998  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
999  */
1000 #define IEEE80211_MIN_AMPDU_BUF 0x8
1001 #define IEEE80211_MAX_AMPDU_BUF 0x40
1002
1003
1004 /* Spatial Multiplexing Power Save Modes (for capability) */
1005 #define WLAN_HT_CAP_SM_PS_STATIC        0
1006 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1007 #define WLAN_HT_CAP_SM_PS_INVALID       2
1008 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1009
1010 /* for SM power control field lower two bits */
1011 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1012 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1013 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1014
1015 /* Authentication algorithms */
1016 #define WLAN_AUTH_OPEN 0
1017 #define WLAN_AUTH_SHARED_KEY 1
1018 #define WLAN_AUTH_FT 2
1019 #define WLAN_AUTH_SAE 3
1020 #define WLAN_AUTH_LEAP 128
1021
1022 #define WLAN_AUTH_CHALLENGE_LEN 128
1023
1024 #define WLAN_CAPABILITY_ESS             (1<<0)
1025 #define WLAN_CAPABILITY_IBSS            (1<<1)
1026 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1027 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1028 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1029 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1030 #define WLAN_CAPABILITY_PBCC            (1<<6)
1031 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1032
1033 /* 802.11h */
1034 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1035 #define WLAN_CAPABILITY_QOS             (1<<9)
1036 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1037 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1038 /* measurement */
1039 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1040 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1041 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1042
1043 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1044 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1045 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1046
1047
1048 /* 802.11g ERP information element */
1049 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1050 #define WLAN_ERP_USE_PROTECTION (1<<1)
1051 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1052
1053 /* WLAN_ERP_BARKER_PREAMBLE values */
1054 enum {
1055         WLAN_ERP_PREAMBLE_SHORT = 0,
1056         WLAN_ERP_PREAMBLE_LONG = 1,
1057 };
1058
1059 /* Status codes */
1060 enum ieee80211_statuscode {
1061         WLAN_STATUS_SUCCESS = 0,
1062         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1063         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1064         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1065         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1066         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1067         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1068         WLAN_STATUS_CHALLENGE_FAIL = 15,
1069         WLAN_STATUS_AUTH_TIMEOUT = 16,
1070         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1071         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1072         /* 802.11b */
1073         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1074         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1075         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1076         /* 802.11h */
1077         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1078         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1079         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1080         /* 802.11g */
1081         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1082         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1083         /* 802.11w */
1084         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1085         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1086         /* 802.11i */
1087         WLAN_STATUS_INVALID_IE = 40,
1088         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1089         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1090         WLAN_STATUS_INVALID_AKMP = 43,
1091         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1092         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1093         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1094         /* 802.11e */
1095         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1096         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1097         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1098         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1099         WLAN_STATUS_REQUEST_DECLINED = 37,
1100         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1101         WLAN_STATUS_CHANGE_TSPEC = 39,
1102         WLAN_STATUS_WAIT_TS_DELAY = 47,
1103         WLAN_STATUS_NO_DIRECT_LINK = 48,
1104         WLAN_STATUS_STA_NOT_PRESENT = 49,
1105         WLAN_STATUS_STA_NOT_QSTA = 50,
1106         /* 802.11s */
1107         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1108         WLAN_STATUS_FCG_NOT_SUPP = 78,
1109         WLAN_STATUS_STA_NO_TBTT = 78,
1110 };
1111
1112
1113 /* Reason codes */
1114 enum ieee80211_reasoncode {
1115         WLAN_REASON_UNSPECIFIED = 1,
1116         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1117         WLAN_REASON_DEAUTH_LEAVING = 3,
1118         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1119         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1120         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1121         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1122         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1123         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1124         /* 802.11h */
1125         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1126         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1127         /* 802.11i */
1128         WLAN_REASON_INVALID_IE = 13,
1129         WLAN_REASON_MIC_FAILURE = 14,
1130         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1131         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1132         WLAN_REASON_IE_DIFFERENT = 17,
1133         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1134         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1135         WLAN_REASON_INVALID_AKMP = 20,
1136         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1137         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1138         WLAN_REASON_IEEE8021X_FAILED = 23,
1139         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1140         /* 802.11e */
1141         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1142         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1143         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1144         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1145         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1146         WLAN_REASON_QSTA_NOT_USE = 37,
1147         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1148         WLAN_REASON_QSTA_TIMEOUT = 39,
1149         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1150         /* 802.11s */
1151         WLAN_REASON_MESH_PEER_CANCELED = 52,
1152         WLAN_REASON_MESH_MAX_PEERS = 53,
1153         WLAN_REASON_MESH_CONFIG = 54,
1154         WLAN_REASON_MESH_CLOSE = 55,
1155         WLAN_REASON_MESH_MAX_RETRIES = 56,
1156         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1157         WLAN_REASON_MESH_INVALID_GTK = 58,
1158         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1159         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1160         WLAN_REASON_MESH_PATH_ERROR = 61,
1161         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1162         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1163         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1164         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1165         WLAN_REASON_MESH_CHAN = 66,
1166 };
1167
1168
1169 /* Information Element IDs */
1170 enum ieee80211_eid {
1171         WLAN_EID_SSID = 0,
1172         WLAN_EID_SUPP_RATES = 1,
1173         WLAN_EID_FH_PARAMS = 2,
1174         WLAN_EID_DS_PARAMS = 3,
1175         WLAN_EID_CF_PARAMS = 4,
1176         WLAN_EID_TIM = 5,
1177         WLAN_EID_IBSS_PARAMS = 6,
1178         WLAN_EID_CHALLENGE = 16,
1179
1180         WLAN_EID_COUNTRY = 7,
1181         WLAN_EID_HP_PARAMS = 8,
1182         WLAN_EID_HP_TABLE = 9,
1183         WLAN_EID_REQUEST = 10,
1184
1185         WLAN_EID_QBSS_LOAD = 11,
1186         WLAN_EID_EDCA_PARAM_SET = 12,
1187         WLAN_EID_TSPEC = 13,
1188         WLAN_EID_TCLAS = 14,
1189         WLAN_EID_SCHEDULE = 15,
1190         WLAN_EID_TS_DELAY = 43,
1191         WLAN_EID_TCLAS_PROCESSING = 44,
1192         WLAN_EID_QOS_CAPA = 46,
1193         /* 802.11s */
1194         WLAN_EID_MESH_CONFIG = 113,
1195         WLAN_EID_MESH_ID = 114,
1196         WLAN_EID_LINK_METRIC_REPORT = 115,
1197         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1198         /* Note that the Peer Link IE has been replaced with the similar
1199          * Peer Management IE.  We will keep the former definition until mesh
1200          * code is changed to comply with latest 802.11s drafts.
1201          */
1202         WLAN_EID_PEER_LINK = 55,  /* no longer in 802.11s drafts */
1203         WLAN_EID_PEER_MGMT = 117,
1204         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1205         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1206         WLAN_EID_BEACON_TIMING = 120,
1207         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1208         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1209         WLAN_EID_MCCAOP_ADVERT = 123,
1210         WLAN_EID_MCCAOP_TEARDOWN = 124,
1211         WLAN_EID_GANN = 125,
1212         WLAN_EID_RANN = 126,
1213         WLAN_EID_PREQ = 130,
1214         WLAN_EID_PREP = 131,
1215         WLAN_EID_PERR = 132,
1216         WLAN_EID_PXU = 137,
1217         WLAN_EID_PXUC = 138,
1218         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1219         WLAN_EID_MIC = 140,
1220
1221         WLAN_EID_PWR_CONSTRAINT = 32,
1222         WLAN_EID_PWR_CAPABILITY = 33,
1223         WLAN_EID_TPC_REQUEST = 34,
1224         WLAN_EID_TPC_REPORT = 35,
1225         WLAN_EID_SUPPORTED_CHANNELS = 36,
1226         WLAN_EID_CHANNEL_SWITCH = 37,
1227         WLAN_EID_MEASURE_REQUEST = 38,
1228         WLAN_EID_MEASURE_REPORT = 39,
1229         WLAN_EID_QUIET = 40,
1230         WLAN_EID_IBSS_DFS = 41,
1231
1232         WLAN_EID_ERP_INFO = 42,
1233         WLAN_EID_EXT_SUPP_RATES = 50,
1234
1235         WLAN_EID_HT_CAPABILITY = 45,
1236         WLAN_EID_HT_INFORMATION = 61,
1237
1238         WLAN_EID_RSN = 48,
1239         WLAN_EID_MMIE = 76,
1240         WLAN_EID_WPA = 221,
1241         WLAN_EID_GENERIC = 221,
1242         WLAN_EID_VENDOR_SPECIFIC = 221,
1243         WLAN_EID_QOS_PARAMETER = 222,
1244
1245         WLAN_EID_AP_CHAN_REPORT = 51,
1246         WLAN_EID_NEIGHBOR_REPORT = 52,
1247         WLAN_EID_RCPI = 53,
1248         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1249         WLAN_EID_ANTENNA_INFO = 64,
1250         WLAN_EID_RSNI = 65,
1251         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1252         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1253         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1254         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1255         WLAN_EID_MULTIPLE_BSSID = 71,
1256         WLAN_EID_BSS_COEX_2040 = 72,
1257         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1258         WLAN_EID_EXT_CAPABILITY = 127,
1259
1260         WLAN_EID_MOBILITY_DOMAIN = 54,
1261         WLAN_EID_FAST_BSS_TRANSITION = 55,
1262         WLAN_EID_TIMEOUT_INTERVAL = 56,
1263         WLAN_EID_RIC_DATA = 57,
1264         WLAN_EID_RIC_DESCRIPTOR = 75,
1265
1266         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1267         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1268         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1269 };
1270
1271 /* Action category code */
1272 enum ieee80211_category {
1273         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1274         WLAN_CATEGORY_QOS = 1,
1275         WLAN_CATEGORY_DLS = 2,
1276         WLAN_CATEGORY_BACK = 3,
1277         WLAN_CATEGORY_PUBLIC = 4,
1278         WLAN_CATEGORY_HT = 7,
1279         WLAN_CATEGORY_SA_QUERY = 8,
1280         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1281         WLAN_CATEGORY_MESH_ACTION = 13,
1282         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1283         WLAN_CATEGORY_SELF_PROTECTED = 15,
1284         WLAN_CATEGORY_WMM = 17,
1285         /* TODO: remove MESH_PLINK and MESH_PATH_SEL after */
1286         /*       mesh is updated to current 802.11s draft  */
1287         WLAN_CATEGORY_MESH_PLINK = 30,
1288         WLAN_CATEGORY_MESH_PATH_SEL = 32,
1289         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1290         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1291 };
1292
1293 /* SPECTRUM_MGMT action code */
1294 enum ieee80211_spectrum_mgmt_actioncode {
1295         WLAN_ACTION_SPCT_MSR_REQ = 0,
1296         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1297         WLAN_ACTION_SPCT_TPC_REQ = 2,
1298         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1299         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1300 };
1301
1302 /* HT action codes */
1303 enum ieee80211_ht_actioncode {
1304         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1305         WLAN_HT_ACTION_SMPS = 1,
1306         WLAN_HT_ACTION_PSMP = 2,
1307         WLAN_HT_ACTION_PCO_PHASE = 3,
1308         WLAN_HT_ACTION_CSI = 4,
1309         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1310         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1311         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1312 };
1313
1314 /* Security key length */
1315 enum ieee80211_key_len {
1316         WLAN_KEY_LEN_WEP40 = 5,
1317         WLAN_KEY_LEN_WEP104 = 13,
1318         WLAN_KEY_LEN_CCMP = 16,
1319         WLAN_KEY_LEN_TKIP = 32,
1320         WLAN_KEY_LEN_AES_CMAC = 16,
1321 };
1322
1323 /**
1324  * enum - mesh path selection protocol identifier
1325  *
1326  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1327  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1328  * be specified in a vendor specific information element
1329  */
1330 enum {
1331         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1332         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1333 };
1334
1335 /**
1336  * enum - mesh path selection metric identifier
1337  *
1338  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1339  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1340  * specified in a vendor specific information element
1341  */
1342 enum {
1343         IEEE80211_PATH_METRIC_AIRTIME = 0,
1344         IEEE80211_PATH_METRIC_VENDOR = 255,
1345 };
1346
1347
1348 /*
1349  * IEEE 802.11-2007 7.3.2.9 Country information element
1350  *
1351  * Minimum length is 8 octets, ie len must be evenly
1352  * divisible by 2
1353  */
1354
1355 /* Although the spec says 8 I'm seeing 6 in practice */
1356 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1357
1358 /* The Country String field of the element shall be 3 octets in length */
1359 #define IEEE80211_COUNTRY_STRING_LEN    3
1360
1361 /*
1362  * For regulatory extension stuff see IEEE 802.11-2007
1363  * Annex I (page 1141) and Annex J (page 1147). Also
1364  * review 7.3.2.9.
1365  *
1366  * When dot11RegulatoryClassesRequired is true and the
1367  * first_channel/reg_extension_id is >= 201 then the IE
1368  * compromises of the 'ext' struct represented below:
1369  *
1370  *  - Regulatory extension ID - when generating IE this just needs
1371  *    to be monotonically increasing for each triplet passed in
1372  *    the IE
1373  *  - Regulatory class - index into set of rules
1374  *  - Coverage class - index into air propagation time (Table 7-27),
1375  *    in microseconds, you can compute the air propagation time from
1376  *    the index by multiplying by 3, so index 10 yields a propagation
1377  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1378  *    yet. A value of 0 inicates air propagation of <= 1 us.
1379  *
1380  *  See also Table I.2 for Emission limit sets and table
1381  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1382  *  a reg_class to an emission limit set and behavior limit set.
1383  */
1384 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1385
1386 /*
1387  *  Channels numbers in the IE must be monotonically increasing
1388  *  if dot11RegulatoryClassesRequired is not true.
1389  *
1390  *  If dot11RegulatoryClassesRequired is true consecutive
1391  *  subband triplets following a regulatory triplet shall
1392  *  have monotonically increasing first_channel number fields.
1393  *
1394  *  Channel numbers shall not overlap.
1395  *
1396  *  Note that max_power is signed.
1397  */
1398 struct ieee80211_country_ie_triplet {
1399         union {
1400                 struct {
1401                         u8 first_channel;
1402                         u8 num_channels;
1403                         s8 max_power;
1404                 } __attribute__ ((packed)) chans;
1405                 struct {
1406                         u8 reg_extension_id;
1407                         u8 reg_class;
1408                         u8 coverage_class;
1409                 } __attribute__ ((packed)) ext;
1410         };
1411 } __attribute__ ((packed));
1412
1413 enum ieee80211_timeout_interval_type {
1414         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1415         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1416         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1417 };
1418
1419 /* BACK action code */
1420 enum ieee80211_back_actioncode {
1421         WLAN_ACTION_ADDBA_REQ = 0,
1422         WLAN_ACTION_ADDBA_RESP = 1,
1423         WLAN_ACTION_DELBA = 2,
1424 };
1425
1426 /* BACK (block-ack) parties */
1427 enum ieee80211_back_parties {
1428         WLAN_BACK_RECIPIENT = 0,
1429         WLAN_BACK_INITIATOR = 1,
1430 };
1431
1432 /* SA Query action */
1433 enum ieee80211_sa_query_action {
1434         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1435         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1436 };
1437
1438
1439 /* A-MSDU 802.11n */
1440 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1441
1442 /* cipher suite selectors */
1443 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1444 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1445 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1446 /* reserved:                            0x000FAC03 */
1447 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1448 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1449 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1450
1451 /* AKM suite selectors */
1452 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1453 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1454 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1455 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1456
1457 #define WLAN_MAX_KEY_LEN                32
1458
1459 #define WLAN_PMKID_LEN                  16
1460
1461 /**
1462  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1463  * @hdr: the frame
1464  *
1465  * The qos ctrl bytes come after the frame_control, duration, seq_num
1466  * and 3 or 4 addresses of length ETH_ALEN.
1467  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1468  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1469  */
1470 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1471 {
1472         if (ieee80211_has_a4(hdr->frame_control))
1473                 return (u8 *)hdr + 30;
1474         else
1475                 return (u8 *)hdr + 24;
1476 }
1477
1478 /**
1479  * ieee80211_get_SA - get pointer to SA
1480  * @hdr: the frame
1481  *
1482  * Given an 802.11 frame, this function returns the offset
1483  * to the source address (SA). It does not verify that the
1484  * header is long enough to contain the address, and the
1485  * header must be long enough to contain the frame control
1486  * field.
1487  */
1488 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1489 {
1490         if (ieee80211_has_a4(hdr->frame_control))
1491                 return hdr->addr4;
1492         if (ieee80211_has_fromds(hdr->frame_control))
1493                 return hdr->addr3;
1494         return hdr->addr2;
1495 }
1496
1497 /**
1498  * ieee80211_get_DA - get pointer to DA
1499  * @hdr: the frame
1500  *
1501  * Given an 802.11 frame, this function returns the offset
1502  * to the destination address (DA). It does not verify that
1503  * the header is long enough to contain the address, and the
1504  * header must be long enough to contain the frame control
1505  * field.
1506  */
1507 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1508 {
1509         if (ieee80211_has_tods(hdr->frame_control))
1510                 return hdr->addr3;
1511         else
1512                 return hdr->addr1;
1513 }
1514
1515 /**
1516  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1517  * @hdr: the frame (buffer must include at least the first octet of payload)
1518  */
1519 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1520 {
1521         if (ieee80211_is_disassoc(hdr->frame_control) ||
1522             ieee80211_is_deauth(hdr->frame_control))
1523                 return true;
1524
1525         if (ieee80211_is_action(hdr->frame_control)) {
1526                 u8 *category;
1527
1528                 /*
1529                  * Action frames, excluding Public Action frames, are Robust
1530                  * Management Frames. However, if we are looking at a Protected
1531                  * frame, skip the check since the data may be encrypted and
1532                  * the frame has already been found to be a Robust Management
1533                  * Frame (by the other end).
1534                  */
1535                 if (ieee80211_has_protected(hdr->frame_control))
1536                         return true;
1537                 category = ((u8 *) hdr) + 24;
1538                 return *category != WLAN_CATEGORY_PUBLIC &&
1539                         *category != WLAN_CATEGORY_HT &&
1540                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1541         }
1542
1543         return false;
1544 }
1545
1546 /**
1547  * ieee80211_fhss_chan_to_freq - get channel frequency
1548  * @channel: the FHSS channel
1549  *
1550  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1551  * Ref IEEE 802.11-2007 section 14.6
1552  */
1553 static inline int ieee80211_fhss_chan_to_freq(int channel)
1554 {
1555         if ((channel > 1) && (channel < 96))
1556                 return channel + 2400;
1557         else
1558                 return -1;
1559 }
1560
1561 /**
1562  * ieee80211_freq_to_fhss_chan - get channel
1563  * @freq: the channels frequency
1564  *
1565  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1566  * Ref IEEE 802.11-2007 section 14.6
1567  */
1568 static inline int ieee80211_freq_to_fhss_chan(int freq)
1569 {
1570         if ((freq > 2401) && (freq < 2496))
1571                 return freq - 2400;
1572         else
1573                 return -1;
1574 }
1575
1576 /**
1577  * ieee80211_dsss_chan_to_freq - get channel center frequency
1578  * @channel: the DSSS channel
1579  *
1580  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1581  * Ref IEEE 802.11-2007 section 15.6
1582  */
1583 static inline int ieee80211_dsss_chan_to_freq(int channel)
1584 {
1585         if ((channel > 0) && (channel < 14))
1586                 return 2407 + (channel * 5);
1587         else if (channel == 14)
1588                 return 2484;
1589         else
1590                 return -1;
1591 }
1592
1593 /**
1594  * ieee80211_freq_to_dsss_chan - get channel
1595  * @freq: the frequency
1596  *
1597  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1598  * Ref IEEE 802.11-2007 section 15.6
1599  *
1600  * This routine selects the channel with the closest center frequency.
1601  */
1602 static inline int ieee80211_freq_to_dsss_chan(int freq)
1603 {
1604         if ((freq >= 2410) && (freq < 2475))
1605                 return (freq - 2405) / 5;
1606         else if ((freq >= 2482) && (freq < 2487))
1607                 return 14;
1608         else
1609                 return -1;
1610 }
1611
1612 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1613  * Ref IEEE 802.11-2007 section 18.4.6.2
1614  *
1615  * The channels and frequencies are the same as those defined for DSSS
1616  */
1617 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1618 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1619
1620 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1621  * Ref IEEE 802.11-2007 section 19.4.2
1622  */
1623 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1624 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1625
1626 /**
1627  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1628  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1629  * @channel: the OFDM channel
1630  *
1631  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1632  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1633  */
1634 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1635 {
1636         if ((channel > 0) && (channel <= 200) &&
1637             (s_freq >= 4000))
1638                 return s_freq + (channel * 5);
1639         else
1640                 return -1;
1641 }
1642
1643 /**
1644  * ieee80211_freq_to_ofdm_channel - get channel
1645  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1646  * @freq: the frequency
1647  *
1648  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1649  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1650  *
1651  * This routine selects the channel with the closest center frequency.
1652  */
1653 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1654 {
1655         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1656             (s_freq >= 4000))
1657                 return (freq + 2 - s_freq) / 5;
1658         else
1659                 return -1;
1660 }
1661
1662 /**
1663  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1664  * @tu: the TUs
1665  */
1666 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1667 {
1668         return 1024 * tu;
1669 }
1670
1671 /**
1672  * ieee80211_check_tim - check if AID bit is set in TIM
1673  * @tim: the TIM IE
1674  * @tim_len: length of the TIM IE
1675  * @aid: the AID to look for
1676  */
1677 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1678                                        u8 tim_len, u16 aid)
1679 {
1680         u8 mask;
1681         u8 indexn0, indexn1, indexn2;
1682
1683         if (unlikely(!tim || tim_len < sizeof(*tim)))
1684                 return false;
1685
1686         aid &= 0x3fff;
1687         indexn0 = aid / 8;
1688         mask  = 1 << (aid & 7);
1689
1690         indexn1 = tim->bitmap_ctrl & 0xfe;
1691         indexn2 = tim_len + indexn1 - 4;
1692
1693         if (indexn0 < indexn1 || indexn0 > indexn2)
1694                 return false;
1695
1696         indexn0 -= indexn1;
1697
1698         return !!(tim->virtual_map[indexn0] & mask);
1699 }
1700
1701 #endif /* __LINUX_IEEE80211_H */