net: allocate tx queues in register_netdevice
[pandora-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
51 #define IEEE80211_SCTL_FRAG             0x000F
52 #define IEEE80211_SCTL_SEQ              0xFFF0
53
54 #define IEEE80211_FTYPE_MGMT            0x0000
55 #define IEEE80211_FTYPE_CTL             0x0004
56 #define IEEE80211_FTYPE_DATA            0x0008
57
58 /* management */
59 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
60 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
61 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
62 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
63 #define IEEE80211_STYPE_PROBE_REQ       0x0040
64 #define IEEE80211_STYPE_PROBE_RESP      0x0050
65 #define IEEE80211_STYPE_BEACON          0x0080
66 #define IEEE80211_STYPE_ATIM            0x0090
67 #define IEEE80211_STYPE_DISASSOC        0x00A0
68 #define IEEE80211_STYPE_AUTH            0x00B0
69 #define IEEE80211_STYPE_DEAUTH          0x00C0
70 #define IEEE80211_STYPE_ACTION          0x00D0
71
72 /* control */
73 #define IEEE80211_STYPE_BACK_REQ        0x0080
74 #define IEEE80211_STYPE_BACK            0x0090
75 #define IEEE80211_STYPE_PSPOLL          0x00A0
76 #define IEEE80211_STYPE_RTS             0x00B0
77 #define IEEE80211_STYPE_CTS             0x00C0
78 #define IEEE80211_STYPE_ACK             0x00D0
79 #define IEEE80211_STYPE_CFEND           0x00E0
80 #define IEEE80211_STYPE_CFENDACK        0x00F0
81
82 /* data */
83 #define IEEE80211_STYPE_DATA                    0x0000
84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
87 #define IEEE80211_STYPE_NULLFUNC                0x0040
88 #define IEEE80211_STYPE_CFACK                   0x0050
89 #define IEEE80211_STYPE_CFPOLL                  0x0060
90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
91 #define IEEE80211_STYPE_QOS_DATA                0x0080
92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
99
100
101 /* miscellaneous IEEE 802.11 constants */
102 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
103 #define IEEE80211_MAX_RTS_THRESHOLD     2353
104 #define IEEE80211_MAX_AID               2007
105 #define IEEE80211_MAX_TIM_LEN           251
106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
107    6.2.1.1.2.
108
109    802.11e clarifies the figure in section 7.1.2. The frame body is
110    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
111 #define IEEE80211_MAX_DATA_LEN          2304
112 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
113 #define IEEE80211_MAX_FRAME_LEN         2352
114
115 #define IEEE80211_MAX_SSID_LEN          32
116
117 #define IEEE80211_MAX_MESH_ID_LEN       32
118
119 #define IEEE80211_QOS_CTL_LEN           2
120 #define IEEE80211_QOS_CTL_TID_MASK      0x000F
121 #define IEEE80211_QOS_CTL_TAG1D_MASK    0x0007
122
123 /* U-APSD queue for WMM IEs sent by AP */
124 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
125
126 /* U-APSD queues for WMM IEs sent by STA */
127 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
128 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
129 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
130 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
131 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
132
133 /* U-APSD max SP length for WMM IEs sent by STA */
134 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
135 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
136 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
137 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
138 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
139 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
140
141 #define IEEE80211_HT_CTL_LEN            4
142
143 struct ieee80211_hdr {
144         __le16 frame_control;
145         __le16 duration_id;
146         u8 addr1[6];
147         u8 addr2[6];
148         u8 addr3[6];
149         __le16 seq_ctrl;
150         u8 addr4[6];
151 } __attribute__ ((packed));
152
153 struct ieee80211_hdr_3addr {
154         __le16 frame_control;
155         __le16 duration_id;
156         u8 addr1[6];
157         u8 addr2[6];
158         u8 addr3[6];
159         __le16 seq_ctrl;
160 } __attribute__ ((packed));
161
162 struct ieee80211_qos_hdr {
163         __le16 frame_control;
164         __le16 duration_id;
165         u8 addr1[6];
166         u8 addr2[6];
167         u8 addr3[6];
168         __le16 seq_ctrl;
169         __le16 qos_ctrl;
170 } __attribute__ ((packed));
171
172 /**
173  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
174  * @fc: frame control bytes in little-endian byteorder
175  */
176 static inline int ieee80211_has_tods(__le16 fc)
177 {
178         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
179 }
180
181 /**
182  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
183  * @fc: frame control bytes in little-endian byteorder
184  */
185 static inline int ieee80211_has_fromds(__le16 fc)
186 {
187         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
188 }
189
190 /**
191  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
192  * @fc: frame control bytes in little-endian byteorder
193  */
194 static inline int ieee80211_has_a4(__le16 fc)
195 {
196         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
197         return (fc & tmp) == tmp;
198 }
199
200 /**
201  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
202  * @fc: frame control bytes in little-endian byteorder
203  */
204 static inline int ieee80211_has_morefrags(__le16 fc)
205 {
206         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
207 }
208
209 /**
210  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
211  * @fc: frame control bytes in little-endian byteorder
212  */
213 static inline int ieee80211_has_retry(__le16 fc)
214 {
215         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
216 }
217
218 /**
219  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
220  * @fc: frame control bytes in little-endian byteorder
221  */
222 static inline int ieee80211_has_pm(__le16 fc)
223 {
224         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
225 }
226
227 /**
228  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
229  * @fc: frame control bytes in little-endian byteorder
230  */
231 static inline int ieee80211_has_moredata(__le16 fc)
232 {
233         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
234 }
235
236 /**
237  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
238  * @fc: frame control bytes in little-endian byteorder
239  */
240 static inline int ieee80211_has_protected(__le16 fc)
241 {
242         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
243 }
244
245 /**
246  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
247  * @fc: frame control bytes in little-endian byteorder
248  */
249 static inline int ieee80211_has_order(__le16 fc)
250 {
251         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
252 }
253
254 /**
255  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
256  * @fc: frame control bytes in little-endian byteorder
257  */
258 static inline int ieee80211_is_mgmt(__le16 fc)
259 {
260         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
261                cpu_to_le16(IEEE80211_FTYPE_MGMT);
262 }
263
264 /**
265  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
266  * @fc: frame control bytes in little-endian byteorder
267  */
268 static inline int ieee80211_is_ctl(__le16 fc)
269 {
270         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
271                cpu_to_le16(IEEE80211_FTYPE_CTL);
272 }
273
274 /**
275  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
276  * @fc: frame control bytes in little-endian byteorder
277  */
278 static inline int ieee80211_is_data(__le16 fc)
279 {
280         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
281                cpu_to_le16(IEEE80211_FTYPE_DATA);
282 }
283
284 /**
285  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
286  * @fc: frame control bytes in little-endian byteorder
287  */
288 static inline int ieee80211_is_data_qos(__le16 fc)
289 {
290         /*
291          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
292          * to check the one bit
293          */
294         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
295                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
296 }
297
298 /**
299  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
300  * @fc: frame control bytes in little-endian byteorder
301  */
302 static inline int ieee80211_is_data_present(__le16 fc)
303 {
304         /*
305          * mask with 0x40 and test that that bit is clear to only return true
306          * for the data-containing substypes.
307          */
308         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
309                cpu_to_le16(IEEE80211_FTYPE_DATA);
310 }
311
312 /**
313  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
314  * @fc: frame control bytes in little-endian byteorder
315  */
316 static inline int ieee80211_is_assoc_req(__le16 fc)
317 {
318         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
319                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
320 }
321
322 /**
323  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
324  * @fc: frame control bytes in little-endian byteorder
325  */
326 static inline int ieee80211_is_assoc_resp(__le16 fc)
327 {
328         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
329                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
330 }
331
332 /**
333  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
334  * @fc: frame control bytes in little-endian byteorder
335  */
336 static inline int ieee80211_is_reassoc_req(__le16 fc)
337 {
338         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
339                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
340 }
341
342 /**
343  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
344  * @fc: frame control bytes in little-endian byteorder
345  */
346 static inline int ieee80211_is_reassoc_resp(__le16 fc)
347 {
348         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
349                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
350 }
351
352 /**
353  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
354  * @fc: frame control bytes in little-endian byteorder
355  */
356 static inline int ieee80211_is_probe_req(__le16 fc)
357 {
358         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
359                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
360 }
361
362 /**
363  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
364  * @fc: frame control bytes in little-endian byteorder
365  */
366 static inline int ieee80211_is_probe_resp(__le16 fc)
367 {
368         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
369                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
370 }
371
372 /**
373  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
374  * @fc: frame control bytes in little-endian byteorder
375  */
376 static inline int ieee80211_is_beacon(__le16 fc)
377 {
378         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
379                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
380 }
381
382 /**
383  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
384  * @fc: frame control bytes in little-endian byteorder
385  */
386 static inline int ieee80211_is_atim(__le16 fc)
387 {
388         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
389                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
390 }
391
392 /**
393  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
394  * @fc: frame control bytes in little-endian byteorder
395  */
396 static inline int ieee80211_is_disassoc(__le16 fc)
397 {
398         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
399                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
400 }
401
402 /**
403  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
404  * @fc: frame control bytes in little-endian byteorder
405  */
406 static inline int ieee80211_is_auth(__le16 fc)
407 {
408         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
409                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
410 }
411
412 /**
413  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
414  * @fc: frame control bytes in little-endian byteorder
415  */
416 static inline int ieee80211_is_deauth(__le16 fc)
417 {
418         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
419                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
420 }
421
422 /**
423  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
424  * @fc: frame control bytes in little-endian byteorder
425  */
426 static inline int ieee80211_is_action(__le16 fc)
427 {
428         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
429                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
430 }
431
432 /**
433  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
434  * @fc: frame control bytes in little-endian byteorder
435  */
436 static inline int ieee80211_is_back_req(__le16 fc)
437 {
438         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
439                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
440 }
441
442 /**
443  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
444  * @fc: frame control bytes in little-endian byteorder
445  */
446 static inline int ieee80211_is_back(__le16 fc)
447 {
448         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
449                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
450 }
451
452 /**
453  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
454  * @fc: frame control bytes in little-endian byteorder
455  */
456 static inline int ieee80211_is_pspoll(__le16 fc)
457 {
458         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
459                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
460 }
461
462 /**
463  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
464  * @fc: frame control bytes in little-endian byteorder
465  */
466 static inline int ieee80211_is_rts(__le16 fc)
467 {
468         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
469                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
470 }
471
472 /**
473  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
474  * @fc: frame control bytes in little-endian byteorder
475  */
476 static inline int ieee80211_is_cts(__le16 fc)
477 {
478         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
479                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
480 }
481
482 /**
483  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
484  * @fc: frame control bytes in little-endian byteorder
485  */
486 static inline int ieee80211_is_ack(__le16 fc)
487 {
488         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
489                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
490 }
491
492 /**
493  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
494  * @fc: frame control bytes in little-endian byteorder
495  */
496 static inline int ieee80211_is_cfend(__le16 fc)
497 {
498         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
499                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
500 }
501
502 /**
503  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
504  * @fc: frame control bytes in little-endian byteorder
505  */
506 static inline int ieee80211_is_cfendack(__le16 fc)
507 {
508         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
509                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
510 }
511
512 /**
513  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
514  * @fc: frame control bytes in little-endian byteorder
515  */
516 static inline int ieee80211_is_nullfunc(__le16 fc)
517 {
518         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
519                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
520 }
521
522 /**
523  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
524  * @fc: frame control bytes in little-endian byteorder
525  */
526 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
527 {
528         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
529                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
530 }
531
532 struct ieee80211s_hdr {
533         u8 flags;
534         u8 ttl;
535         __le32 seqnum;
536         u8 eaddr1[6];
537         u8 eaddr2[6];
538         u8 eaddr3[6];
539 } __attribute__ ((packed));
540
541 /* Mesh flags */
542 #define MESH_FLAGS_AE_A4        0x1
543 #define MESH_FLAGS_AE_A5_A6     0x2
544 #define MESH_FLAGS_AE           0x3
545 #define MESH_FLAGS_PS_DEEP      0x4
546
547 /**
548  * struct ieee80211_quiet_ie
549  *
550  * This structure refers to "Quiet information element"
551  */
552 struct ieee80211_quiet_ie {
553         u8 count;
554         u8 period;
555         __le16 duration;
556         __le16 offset;
557 } __attribute__ ((packed));
558
559 /**
560  * struct ieee80211_msrment_ie
561  *
562  * This structure refers to "Measurement Request/Report information element"
563  */
564 struct ieee80211_msrment_ie {
565         u8 token;
566         u8 mode;
567         u8 type;
568         u8 request[0];
569 } __attribute__ ((packed));
570
571 /**
572  * struct ieee80211_channel_sw_ie
573  *
574  * This structure refers to "Channel Switch Announcement information element"
575  */
576 struct ieee80211_channel_sw_ie {
577         u8 mode;
578         u8 new_ch_num;
579         u8 count;
580 } __attribute__ ((packed));
581
582 /**
583  * struct ieee80211_tim
584  *
585  * This structure refers to "Traffic Indication Map information element"
586  */
587 struct ieee80211_tim_ie {
588         u8 dtim_count;
589         u8 dtim_period;
590         u8 bitmap_ctrl;
591         /* variable size: 1 - 251 bytes */
592         u8 virtual_map[1];
593 } __attribute__ ((packed));
594
595 /**
596  * struct ieee80211_meshconf_ie
597  *
598  * This structure refers to "Mesh Configuration information element"
599  */
600 struct ieee80211_meshconf_ie {
601         u8 meshconf_psel;
602         u8 meshconf_pmetric;
603         u8 meshconf_congest;
604         u8 meshconf_synch;
605         u8 meshconf_auth;
606         u8 meshconf_form;
607         u8 meshconf_cap;
608 } __attribute__ ((packed));
609
610 /**
611  * struct ieee80211_rann_ie
612  *
613  * This structure refers to "Root Announcement information element"
614  */
615 struct ieee80211_rann_ie {
616         u8 rann_flags;
617         u8 rann_hopcount;
618         u8 rann_ttl;
619         u8 rann_addr[6];
620         u32 rann_seq;
621         u32 rann_metric;
622 } __attribute__ ((packed));
623
624 #define WLAN_SA_QUERY_TR_ID_LEN 2
625
626 struct ieee80211_mgmt {
627         __le16 frame_control;
628         __le16 duration;
629         u8 da[6];
630         u8 sa[6];
631         u8 bssid[6];
632         __le16 seq_ctrl;
633         union {
634                 struct {
635                         __le16 auth_alg;
636                         __le16 auth_transaction;
637                         __le16 status_code;
638                         /* possibly followed by Challenge text */
639                         u8 variable[0];
640                 } __attribute__ ((packed)) auth;
641                 struct {
642                         __le16 reason_code;
643                 } __attribute__ ((packed)) deauth;
644                 struct {
645                         __le16 capab_info;
646                         __le16 listen_interval;
647                         /* followed by SSID and Supported rates */
648                         u8 variable[0];
649                 } __attribute__ ((packed)) assoc_req;
650                 struct {
651                         __le16 capab_info;
652                         __le16 status_code;
653                         __le16 aid;
654                         /* followed by Supported rates */
655                         u8 variable[0];
656                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
657                 struct {
658                         __le16 capab_info;
659                         __le16 listen_interval;
660                         u8 current_ap[6];
661                         /* followed by SSID and Supported rates */
662                         u8 variable[0];
663                 } __attribute__ ((packed)) reassoc_req;
664                 struct {
665                         __le16 reason_code;
666                 } __attribute__ ((packed)) disassoc;
667                 struct {
668                         __le64 timestamp;
669                         __le16 beacon_int;
670                         __le16 capab_info;
671                         /* followed by some of SSID, Supported rates,
672                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
673                         u8 variable[0];
674                 } __attribute__ ((packed)) beacon;
675                 struct {
676                         /* only variable items: SSID, Supported rates */
677                         u8 variable[0];
678                 } __attribute__ ((packed)) probe_req;
679                 struct {
680                         __le64 timestamp;
681                         __le16 beacon_int;
682                         __le16 capab_info;
683                         /* followed by some of SSID, Supported rates,
684                          * FH Params, DS Params, CF Params, IBSS Params */
685                         u8 variable[0];
686                 } __attribute__ ((packed)) probe_resp;
687                 struct {
688                         u8 category;
689                         union {
690                                 struct {
691                                         u8 action_code;
692                                         u8 dialog_token;
693                                         u8 status_code;
694                                         u8 variable[0];
695                                 } __attribute__ ((packed)) wme_action;
696                                 struct{
697                                         u8 action_code;
698                                         u8 element_id;
699                                         u8 length;
700                                         struct ieee80211_channel_sw_ie sw_elem;
701                                 } __attribute__((packed)) chan_switch;
702                                 struct{
703                                         u8 action_code;
704                                         u8 dialog_token;
705                                         u8 element_id;
706                                         u8 length;
707                                         struct ieee80211_msrment_ie msr_elem;
708                                 } __attribute__((packed)) measurement;
709                                 struct{
710                                         u8 action_code;
711                                         u8 dialog_token;
712                                         __le16 capab;
713                                         __le16 timeout;
714                                         __le16 start_seq_num;
715                                 } __attribute__((packed)) addba_req;
716                                 struct{
717                                         u8 action_code;
718                                         u8 dialog_token;
719                                         __le16 status;
720                                         __le16 capab;
721                                         __le16 timeout;
722                                 } __attribute__((packed)) addba_resp;
723                                 struct{
724                                         u8 action_code;
725                                         __le16 params;
726                                         __le16 reason_code;
727                                 } __attribute__((packed)) delba;
728                                 struct{
729                                         u8 action_code;
730                                         /* capab_info for open and confirm,
731                                          * reason for close
732                                          */
733                                         __le16 aux;
734                                         /* Followed in plink_confirm by status
735                                          * code, AID and supported rates,
736                                          * and directly by supported rates in
737                                          * plink_open and plink_close
738                                          */
739                                         u8 variable[0];
740                                 } __attribute__((packed)) plink_action;
741                                 struct{
742                                         u8 action_code;
743                                         u8 variable[0];
744                                 } __attribute__((packed)) mesh_action;
745                                 struct {
746                                         u8 action;
747                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
748                                 } __attribute__ ((packed)) sa_query;
749                                 struct {
750                                         u8 action;
751                                         u8 smps_control;
752                                 } __attribute__ ((packed)) ht_smps;
753                         } u;
754                 } __attribute__ ((packed)) action;
755         } u;
756 } __attribute__ ((packed));
757
758 /* mgmt header + 1 byte category code */
759 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
760
761
762 /* Management MIC information element (IEEE 802.11w) */
763 struct ieee80211_mmie {
764         u8 element_id;
765         u8 length;
766         __le16 key_id;
767         u8 sequence_number[6];
768         u8 mic[8];
769 } __attribute__ ((packed));
770
771 /* Control frames */
772 struct ieee80211_rts {
773         __le16 frame_control;
774         __le16 duration;
775         u8 ra[6];
776         u8 ta[6];
777 } __attribute__ ((packed));
778
779 struct ieee80211_cts {
780         __le16 frame_control;
781         __le16 duration;
782         u8 ra[6];
783 } __attribute__ ((packed));
784
785 struct ieee80211_pspoll {
786         __le16 frame_control;
787         __le16 aid;
788         u8 bssid[6];
789         u8 ta[6];
790 } __attribute__ ((packed));
791
792 /**
793  * struct ieee80211_bar - HT Block Ack Request
794  *
795  * This structure refers to "HT BlockAckReq" as
796  * described in 802.11n draft section 7.2.1.7.1
797  */
798 struct ieee80211_bar {
799         __le16 frame_control;
800         __le16 duration;
801         __u8 ra[6];
802         __u8 ta[6];
803         __le16 control;
804         __le16 start_seq_num;
805 } __attribute__((packed));
806
807 /* 802.11 BAR control masks */
808 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
809 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
810
811
812 #define IEEE80211_HT_MCS_MASK_LEN               10
813
814 /**
815  * struct ieee80211_mcs_info - MCS information
816  * @rx_mask: RX mask
817  * @rx_highest: highest supported RX rate. If set represents
818  *      the highest supported RX data rate in units of 1 Mbps.
819  *      If this field is 0 this value should not be used to
820  *      consider the highest RX data rate supported.
821  * @tx_params: TX parameters
822  */
823 struct ieee80211_mcs_info {
824         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
825         __le16 rx_highest;
826         u8 tx_params;
827         u8 reserved[3];
828 } __attribute__((packed));
829
830 /* 802.11n HT capability MSC set */
831 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
832 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
833 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
834 /* value 0 == 1 stream etc */
835 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
836 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
837 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
838 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
839
840 /*
841  * 802.11n D5.0 20.3.5 / 20.6 says:
842  * - indices 0 to 7 and 32 are single spatial stream
843  * - 8 to 31 are multiple spatial streams using equal modulation
844  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
845  * - remainder are multiple spatial streams using unequal modulation
846  */
847 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
848 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
849         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
850
851 /**
852  * struct ieee80211_ht_cap - HT capabilities
853  *
854  * This structure is the "HT capabilities element" as
855  * described in 802.11n D5.0 7.3.2.57
856  */
857 struct ieee80211_ht_cap {
858         __le16 cap_info;
859         u8 ampdu_params_info;
860
861         /* 16 bytes MCS information */
862         struct ieee80211_mcs_info mcs;
863
864         __le16 extended_ht_cap_info;
865         __le32 tx_BF_cap_info;
866         u8 antenna_selection_info;
867 } __attribute__ ((packed));
868
869 /* 802.11n HT capabilities masks (for cap_info) */
870 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
871 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
872 #define IEEE80211_HT_CAP_SM_PS                  0x000C
873 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
874 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
875 #define IEEE80211_HT_CAP_SGI_20                 0x0020
876 #define IEEE80211_HT_CAP_SGI_40                 0x0040
877 #define IEEE80211_HT_CAP_TX_STBC                0x0080
878 #define IEEE80211_HT_CAP_RX_STBC                0x0300
879 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
880 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
881 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
882 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
883 #define IEEE80211_HT_CAP_RESERVED               0x2000
884 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
885 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
886
887 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
888 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
889 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
890 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
891
892 /*
893  * Maximum length of AMPDU that the STA can receive.
894  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
895  */
896 enum ieee80211_max_ampdu_length_exp {
897         IEEE80211_HT_MAX_AMPDU_8K = 0,
898         IEEE80211_HT_MAX_AMPDU_16K = 1,
899         IEEE80211_HT_MAX_AMPDU_32K = 2,
900         IEEE80211_HT_MAX_AMPDU_64K = 3
901 };
902
903 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
904
905 /* Minimum MPDU start spacing */
906 enum ieee80211_min_mpdu_spacing {
907         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
908         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
909         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
910         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
911         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
912         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
913         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
914         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
915 };
916
917 /**
918  * struct ieee80211_ht_info - HT information
919  *
920  * This structure is the "HT information element" as
921  * described in 802.11n D5.0 7.3.2.58
922  */
923 struct ieee80211_ht_info {
924         u8 control_chan;
925         u8 ht_param;
926         __le16 operation_mode;
927         __le16 stbc_param;
928         u8 basic_set[16];
929 } __attribute__ ((packed));
930
931 /* for ht_param */
932 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
933 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
934 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
935 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
936 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
937 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
938 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
939 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
940
941 /* for operation_mode */
942 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
943 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
944 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
945 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
946 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
947 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
948 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
949
950 /* for stbc_param */
951 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
952 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
953 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
954 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
955 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
956 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
957
958
959 /* block-ack parameters */
960 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
961 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
962 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
963 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
964 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
965
966 /*
967  * A-PMDU buffer sizes
968  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
969  */
970 #define IEEE80211_MIN_AMPDU_BUF 0x8
971 #define IEEE80211_MAX_AMPDU_BUF 0x40
972
973
974 /* Spatial Multiplexing Power Save Modes (for capability) */
975 #define WLAN_HT_CAP_SM_PS_STATIC        0
976 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
977 #define WLAN_HT_CAP_SM_PS_INVALID       2
978 #define WLAN_HT_CAP_SM_PS_DISABLED      3
979
980 /* for SM power control field lower two bits */
981 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
982 #define WLAN_HT_SMPS_CONTROL_STATIC     1
983 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
984
985 /* Authentication algorithms */
986 #define WLAN_AUTH_OPEN 0
987 #define WLAN_AUTH_SHARED_KEY 1
988 #define WLAN_AUTH_FT 2
989 #define WLAN_AUTH_SAE 3
990 #define WLAN_AUTH_LEAP 128
991
992 #define WLAN_AUTH_CHALLENGE_LEN 128
993
994 #define WLAN_CAPABILITY_ESS             (1<<0)
995 #define WLAN_CAPABILITY_IBSS            (1<<1)
996 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
997 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
998 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
999 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1000 #define WLAN_CAPABILITY_PBCC            (1<<6)
1001 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1002
1003 /* 802.11h */
1004 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1005 #define WLAN_CAPABILITY_QOS             (1<<9)
1006 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1007 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1008 /* measurement */
1009 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1010 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1011 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1012
1013 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1014 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1015 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1016
1017
1018 /* 802.11g ERP information element */
1019 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1020 #define WLAN_ERP_USE_PROTECTION (1<<1)
1021 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1022
1023 /* WLAN_ERP_BARKER_PREAMBLE values */
1024 enum {
1025         WLAN_ERP_PREAMBLE_SHORT = 0,
1026         WLAN_ERP_PREAMBLE_LONG = 1,
1027 };
1028
1029 /* Status codes */
1030 enum ieee80211_statuscode {
1031         WLAN_STATUS_SUCCESS = 0,
1032         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1033         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1034         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1035         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1036         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1037         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1038         WLAN_STATUS_CHALLENGE_FAIL = 15,
1039         WLAN_STATUS_AUTH_TIMEOUT = 16,
1040         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1041         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1042         /* 802.11b */
1043         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1044         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1045         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1046         /* 802.11h */
1047         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1048         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1049         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1050         /* 802.11g */
1051         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1052         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1053         /* 802.11w */
1054         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1055         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1056         /* 802.11i */
1057         WLAN_STATUS_INVALID_IE = 40,
1058         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1059         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1060         WLAN_STATUS_INVALID_AKMP = 43,
1061         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1062         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1063         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1064         /* 802.11e */
1065         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1066         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1067         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1068         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1069         WLAN_STATUS_REQUEST_DECLINED = 37,
1070         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1071         WLAN_STATUS_CHANGE_TSPEC = 39,
1072         WLAN_STATUS_WAIT_TS_DELAY = 47,
1073         WLAN_STATUS_NO_DIRECT_LINK = 48,
1074         WLAN_STATUS_STA_NOT_PRESENT = 49,
1075         WLAN_STATUS_STA_NOT_QSTA = 50,
1076         /* 802.11s */
1077         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1078         WLAN_STATUS_FCG_NOT_SUPP = 78,
1079         WLAN_STATUS_STA_NO_TBTT = 78,
1080 };
1081
1082
1083 /* Reason codes */
1084 enum ieee80211_reasoncode {
1085         WLAN_REASON_UNSPECIFIED = 1,
1086         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1087         WLAN_REASON_DEAUTH_LEAVING = 3,
1088         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1089         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1090         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1091         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1092         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1093         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1094         /* 802.11h */
1095         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1096         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1097         /* 802.11i */
1098         WLAN_REASON_INVALID_IE = 13,
1099         WLAN_REASON_MIC_FAILURE = 14,
1100         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1101         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1102         WLAN_REASON_IE_DIFFERENT = 17,
1103         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1104         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1105         WLAN_REASON_INVALID_AKMP = 20,
1106         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1107         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1108         WLAN_REASON_IEEE8021X_FAILED = 23,
1109         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1110         /* 802.11e */
1111         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1112         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1113         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1114         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1115         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1116         WLAN_REASON_QSTA_NOT_USE = 37,
1117         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1118         WLAN_REASON_QSTA_TIMEOUT = 39,
1119         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1120         /* 802.11s */
1121         WLAN_REASON_MESH_PEER_CANCELED = 52,
1122         WLAN_REASON_MESH_MAX_PEERS = 53,
1123         WLAN_REASON_MESH_CONFIG = 54,
1124         WLAN_REASON_MESH_CLOSE = 55,
1125         WLAN_REASON_MESH_MAX_RETRIES = 56,
1126         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1127         WLAN_REASON_MESH_INVALID_GTK = 58,
1128         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1129         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1130         WLAN_REASON_MESH_PATH_ERROR = 61,
1131         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1132         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1133         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1134         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1135         WLAN_REASON_MESH_CHAN = 66,
1136 };
1137
1138
1139 /* Information Element IDs */
1140 enum ieee80211_eid {
1141         WLAN_EID_SSID = 0,
1142         WLAN_EID_SUPP_RATES = 1,
1143         WLAN_EID_FH_PARAMS = 2,
1144         WLAN_EID_DS_PARAMS = 3,
1145         WLAN_EID_CF_PARAMS = 4,
1146         WLAN_EID_TIM = 5,
1147         WLAN_EID_IBSS_PARAMS = 6,
1148         WLAN_EID_CHALLENGE = 16,
1149
1150         WLAN_EID_COUNTRY = 7,
1151         WLAN_EID_HP_PARAMS = 8,
1152         WLAN_EID_HP_TABLE = 9,
1153         WLAN_EID_REQUEST = 10,
1154
1155         WLAN_EID_QBSS_LOAD = 11,
1156         WLAN_EID_EDCA_PARAM_SET = 12,
1157         WLAN_EID_TSPEC = 13,
1158         WLAN_EID_TCLAS = 14,
1159         WLAN_EID_SCHEDULE = 15,
1160         WLAN_EID_TS_DELAY = 43,
1161         WLAN_EID_TCLAS_PROCESSING = 44,
1162         WLAN_EID_QOS_CAPA = 46,
1163         /* 802.11s */
1164         WLAN_EID_MESH_CONFIG = 113,
1165         WLAN_EID_MESH_ID = 114,
1166         WLAN_EID_LINK_METRIC_REPORT = 115,
1167         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1168         /* Note that the Peer Link IE has been replaced with the similar
1169          * Peer Management IE.  We will keep the former definition until mesh
1170          * code is changed to comply with latest 802.11s drafts.
1171          */
1172         WLAN_EID_PEER_LINK = 55,  /* no longer in 802.11s drafts */
1173         WLAN_EID_PEER_MGMT = 117,
1174         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1175         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1176         WLAN_EID_BEACON_TIMING = 120,
1177         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1178         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1179         WLAN_EID_MCCAOP_ADVERT = 123,
1180         WLAN_EID_MCCAOP_TEARDOWN = 124,
1181         WLAN_EID_GANN = 125,
1182         WLAN_EID_RANN = 126,
1183         WLAN_EID_PREQ = 130,
1184         WLAN_EID_PREP = 131,
1185         WLAN_EID_PERR = 132,
1186         WLAN_EID_PXU = 137,
1187         WLAN_EID_PXUC = 138,
1188         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1189         WLAN_EID_MIC = 140,
1190
1191         WLAN_EID_PWR_CONSTRAINT = 32,
1192         WLAN_EID_PWR_CAPABILITY = 33,
1193         WLAN_EID_TPC_REQUEST = 34,
1194         WLAN_EID_TPC_REPORT = 35,
1195         WLAN_EID_SUPPORTED_CHANNELS = 36,
1196         WLAN_EID_CHANNEL_SWITCH = 37,
1197         WLAN_EID_MEASURE_REQUEST = 38,
1198         WLAN_EID_MEASURE_REPORT = 39,
1199         WLAN_EID_QUIET = 40,
1200         WLAN_EID_IBSS_DFS = 41,
1201
1202         WLAN_EID_ERP_INFO = 42,
1203         WLAN_EID_EXT_SUPP_RATES = 50,
1204
1205         WLAN_EID_HT_CAPABILITY = 45,
1206         WLAN_EID_HT_INFORMATION = 61,
1207
1208         WLAN_EID_RSN = 48,
1209         WLAN_EID_MMIE = 76,
1210         WLAN_EID_WPA = 221,
1211         WLAN_EID_GENERIC = 221,
1212         WLAN_EID_VENDOR_SPECIFIC = 221,
1213         WLAN_EID_QOS_PARAMETER = 222,
1214
1215         WLAN_EID_AP_CHAN_REPORT = 51,
1216         WLAN_EID_NEIGHBOR_REPORT = 52,
1217         WLAN_EID_RCPI = 53,
1218         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1219         WLAN_EID_ANTENNA_INFO = 64,
1220         WLAN_EID_RSNI = 65,
1221         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1222         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1223         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1224         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1225         WLAN_EID_MULTIPLE_BSSID = 71,
1226
1227         WLAN_EID_MOBILITY_DOMAIN = 54,
1228         WLAN_EID_FAST_BSS_TRANSITION = 55,
1229         WLAN_EID_TIMEOUT_INTERVAL = 56,
1230         WLAN_EID_RIC_DATA = 57,
1231         WLAN_EID_RIC_DESCRIPTOR = 75,
1232
1233         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1234         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1235         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1236 };
1237
1238 /* Action category code */
1239 enum ieee80211_category {
1240         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1241         WLAN_CATEGORY_QOS = 1,
1242         WLAN_CATEGORY_DLS = 2,
1243         WLAN_CATEGORY_BACK = 3,
1244         WLAN_CATEGORY_PUBLIC = 4,
1245         WLAN_CATEGORY_HT = 7,
1246         WLAN_CATEGORY_SA_QUERY = 8,
1247         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1248         WLAN_CATEGORY_MESH_ACTION = 13,
1249         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1250         WLAN_CATEGORY_SELF_PROTECTED = 15,
1251         WLAN_CATEGORY_WMM = 17,
1252         /* TODO: remove MESH_PLINK and MESH_PATH_SEL after */
1253         /*       mesh is updated to current 802.11s draft  */
1254         WLAN_CATEGORY_MESH_PLINK = 30,
1255         WLAN_CATEGORY_MESH_PATH_SEL = 32,
1256         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1257         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1258 };
1259
1260 /* SPECTRUM_MGMT action code */
1261 enum ieee80211_spectrum_mgmt_actioncode {
1262         WLAN_ACTION_SPCT_MSR_REQ = 0,
1263         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1264         WLAN_ACTION_SPCT_TPC_REQ = 2,
1265         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1266         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1267 };
1268
1269 /* HT action codes */
1270 enum ieee80211_ht_actioncode {
1271         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1272         WLAN_HT_ACTION_SMPS = 1,
1273         WLAN_HT_ACTION_PSMP = 2,
1274         WLAN_HT_ACTION_PCO_PHASE = 3,
1275         WLAN_HT_ACTION_CSI = 4,
1276         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1277         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1278         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1279 };
1280
1281 /* Security key length */
1282 enum ieee80211_key_len {
1283         WLAN_KEY_LEN_WEP40 = 5,
1284         WLAN_KEY_LEN_WEP104 = 13,
1285         WLAN_KEY_LEN_CCMP = 16,
1286         WLAN_KEY_LEN_TKIP = 32,
1287         WLAN_KEY_LEN_AES_CMAC = 16,
1288 };
1289
1290 /*
1291  * IEEE 802.11-2007 7.3.2.9 Country information element
1292  *
1293  * Minimum length is 8 octets, ie len must be evenly
1294  * divisible by 2
1295  */
1296
1297 /* Although the spec says 8 I'm seeing 6 in practice */
1298 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1299
1300 /*
1301  * For regulatory extension stuff see IEEE 802.11-2007
1302  * Annex I (page 1141) and Annex J (page 1147). Also
1303  * review 7.3.2.9.
1304  *
1305  * When dot11RegulatoryClassesRequired is true and the
1306  * first_channel/reg_extension_id is >= 201 then the IE
1307  * compromises of the 'ext' struct represented below:
1308  *
1309  *  - Regulatory extension ID - when generating IE this just needs
1310  *    to be monotonically increasing for each triplet passed in
1311  *    the IE
1312  *  - Regulatory class - index into set of rules
1313  *  - Coverage class - index into air propagation time (Table 7-27),
1314  *    in microseconds, you can compute the air propagation time from
1315  *    the index by multiplying by 3, so index 10 yields a propagation
1316  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1317  *    yet. A value of 0 inicates air propagation of <= 1 us.
1318  *
1319  *  See also Table I.2 for Emission limit sets and table
1320  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1321  *  a reg_class to an emission limit set and behavior limit set.
1322  */
1323 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1324
1325 /*
1326  *  Channels numbers in the IE must be monotonically increasing
1327  *  if dot11RegulatoryClassesRequired is not true.
1328  *
1329  *  If dot11RegulatoryClassesRequired is true consecutive
1330  *  subband triplets following a regulatory triplet shall
1331  *  have monotonically increasing first_channel number fields.
1332  *
1333  *  Channel numbers shall not overlap.
1334  *
1335  *  Note that max_power is signed.
1336  */
1337 struct ieee80211_country_ie_triplet {
1338         union {
1339                 struct {
1340                         u8 first_channel;
1341                         u8 num_channels;
1342                         s8 max_power;
1343                 } __attribute__ ((packed)) chans;
1344                 struct {
1345                         u8 reg_extension_id;
1346                         u8 reg_class;
1347                         u8 coverage_class;
1348                 } __attribute__ ((packed)) ext;
1349         };
1350 } __attribute__ ((packed));
1351
1352 enum ieee80211_timeout_interval_type {
1353         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1354         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1355         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1356 };
1357
1358 /* BACK action code */
1359 enum ieee80211_back_actioncode {
1360         WLAN_ACTION_ADDBA_REQ = 0,
1361         WLAN_ACTION_ADDBA_RESP = 1,
1362         WLAN_ACTION_DELBA = 2,
1363 };
1364
1365 /* BACK (block-ack) parties */
1366 enum ieee80211_back_parties {
1367         WLAN_BACK_RECIPIENT = 0,
1368         WLAN_BACK_INITIATOR = 1,
1369 };
1370
1371 /* SA Query action */
1372 enum ieee80211_sa_query_action {
1373         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1374         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1375 };
1376
1377
1378 /* A-MSDU 802.11n */
1379 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1380
1381 /* cipher suite selectors */
1382 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1383 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1384 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1385 /* reserved:                            0x000FAC03 */
1386 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1387 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1388 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1389
1390 /* AKM suite selectors */
1391 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1392 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1393 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1394 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1395
1396 #define WLAN_MAX_KEY_LEN                32
1397
1398 #define WLAN_PMKID_LEN                  16
1399
1400 /**
1401  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1402  * @hdr: the frame
1403  *
1404  * The qos ctrl bytes come after the frame_control, duration, seq_num
1405  * and 3 or 4 addresses of length ETH_ALEN.
1406  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1407  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1408  */
1409 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1410 {
1411         if (ieee80211_has_a4(hdr->frame_control))
1412                 return (u8 *)hdr + 30;
1413         else
1414                 return (u8 *)hdr + 24;
1415 }
1416
1417 /**
1418  * ieee80211_get_SA - get pointer to SA
1419  * @hdr: the frame
1420  *
1421  * Given an 802.11 frame, this function returns the offset
1422  * to the source address (SA). It does not verify that the
1423  * header is long enough to contain the address, and the
1424  * header must be long enough to contain the frame control
1425  * field.
1426  */
1427 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1428 {
1429         if (ieee80211_has_a4(hdr->frame_control))
1430                 return hdr->addr4;
1431         if (ieee80211_has_fromds(hdr->frame_control))
1432                 return hdr->addr3;
1433         return hdr->addr2;
1434 }
1435
1436 /**
1437  * ieee80211_get_DA - get pointer to DA
1438  * @hdr: the frame
1439  *
1440  * Given an 802.11 frame, this function returns the offset
1441  * to the destination address (DA). It does not verify that
1442  * the header is long enough to contain the address, and the
1443  * header must be long enough to contain the frame control
1444  * field.
1445  */
1446 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1447 {
1448         if (ieee80211_has_tods(hdr->frame_control))
1449                 return hdr->addr3;
1450         else
1451                 return hdr->addr1;
1452 }
1453
1454 /**
1455  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1456  * @hdr: the frame (buffer must include at least the first octet of payload)
1457  */
1458 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1459 {
1460         if (ieee80211_is_disassoc(hdr->frame_control) ||
1461             ieee80211_is_deauth(hdr->frame_control))
1462                 return true;
1463
1464         if (ieee80211_is_action(hdr->frame_control)) {
1465                 u8 *category;
1466
1467                 /*
1468                  * Action frames, excluding Public Action frames, are Robust
1469                  * Management Frames. However, if we are looking at a Protected
1470                  * frame, skip the check since the data may be encrypted and
1471                  * the frame has already been found to be a Robust Management
1472                  * Frame (by the other end).
1473                  */
1474                 if (ieee80211_has_protected(hdr->frame_control))
1475                         return true;
1476                 category = ((u8 *) hdr) + 24;
1477                 return *category != WLAN_CATEGORY_PUBLIC &&
1478                         *category != WLAN_CATEGORY_HT &&
1479                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1480         }
1481
1482         return false;
1483 }
1484
1485 /**
1486  * ieee80211_fhss_chan_to_freq - get channel frequency
1487  * @channel: the FHSS channel
1488  *
1489  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1490  * Ref IEEE 802.11-2007 section 14.6
1491  */
1492 static inline int ieee80211_fhss_chan_to_freq(int channel)
1493 {
1494         if ((channel > 1) && (channel < 96))
1495                 return channel + 2400;
1496         else
1497                 return -1;
1498 }
1499
1500 /**
1501  * ieee80211_freq_to_fhss_chan - get channel
1502  * @freq: the channels frequency
1503  *
1504  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1505  * Ref IEEE 802.11-2007 section 14.6
1506  */
1507 static inline int ieee80211_freq_to_fhss_chan(int freq)
1508 {
1509         if ((freq > 2401) && (freq < 2496))
1510                 return freq - 2400;
1511         else
1512                 return -1;
1513 }
1514
1515 /**
1516  * ieee80211_dsss_chan_to_freq - get channel center frequency
1517  * @channel: the DSSS channel
1518  *
1519  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1520  * Ref IEEE 802.11-2007 section 15.6
1521  */
1522 static inline int ieee80211_dsss_chan_to_freq(int channel)
1523 {
1524         if ((channel > 0) && (channel < 14))
1525                 return 2407 + (channel * 5);
1526         else if (channel == 14)
1527                 return 2484;
1528         else
1529                 return -1;
1530 }
1531
1532 /**
1533  * ieee80211_freq_to_dsss_chan - get channel
1534  * @freq: the frequency
1535  *
1536  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1537  * Ref IEEE 802.11-2007 section 15.6
1538  *
1539  * This routine selects the channel with the closest center frequency.
1540  */
1541 static inline int ieee80211_freq_to_dsss_chan(int freq)
1542 {
1543         if ((freq >= 2410) && (freq < 2475))
1544                 return (freq - 2405) / 5;
1545         else if ((freq >= 2482) && (freq < 2487))
1546                 return 14;
1547         else
1548                 return -1;
1549 }
1550
1551 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1552  * Ref IEEE 802.11-2007 section 18.4.6.2
1553  *
1554  * The channels and frequencies are the same as those defined for DSSS
1555  */
1556 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1557 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1558
1559 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1560  * Ref IEEE 802.11-2007 section 19.4.2
1561  */
1562 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1563 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1564
1565 /**
1566  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1567  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1568  * @channel: the OFDM channel
1569  *
1570  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1571  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1572  */
1573 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1574 {
1575         if ((channel > 0) && (channel <= 200) &&
1576             (s_freq >= 4000))
1577                 return s_freq + (channel * 5);
1578         else
1579                 return -1;
1580 }
1581
1582 /**
1583  * ieee80211_freq_to_ofdm_channel - get channel
1584  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1585  * @freq: the frequency
1586  *
1587  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1588  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1589  *
1590  * This routine selects the channel with the closest center frequency.
1591  */
1592 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1593 {
1594         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1595             (s_freq >= 4000))
1596                 return (freq + 2 - s_freq) / 5;
1597         else
1598                 return -1;
1599 }
1600
1601 /**
1602  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1603  * @tu: the TUs
1604  */
1605 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1606 {
1607         return 1024 * tu;
1608 }
1609
1610 /**
1611  * ieee80211_check_tim - check if AID bit is set in TIM
1612  * @tim: the TIM IE
1613  * @tim_len: length of the TIM IE
1614  * @aid: the AID to look for
1615  */
1616 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1617                                        u8 tim_len, u16 aid)
1618 {
1619         u8 mask;
1620         u8 index, indexn1, indexn2;
1621
1622         if (unlikely(!tim || tim_len < sizeof(*tim)))
1623                 return false;
1624
1625         aid &= 0x3fff;
1626         index = aid / 8;
1627         mask  = 1 << (aid & 7);
1628
1629         indexn1 = tim->bitmap_ctrl & 0xfe;
1630         indexn2 = tim_len + indexn1 - 4;
1631
1632         if (index < indexn1 || index > indexn2)
1633                 return false;
1634
1635         index -= indexn1;
1636
1637         return !!(tim->virtual_map[index] & mask);
1638 }
1639
1640 #endif /* LINUX_IEEE80211_H */