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a9de8ce0 JB |
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 | ||
9387b7ca JL |
15 | #ifndef LINUX_IEEE80211_H |
16 | #define LINUX_IEEE80211_H | |
a9de8ce0 JB |
17 | |
18 | #include <linux/types.h> | |
f97df02e | 19 | #include <asm/byteorder.h> |
a9de8ce0 | 20 | |
3f46b29c JB |
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 | ||
a9de8ce0 JB |
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 */ | |
6b4e3241 RR |
73 | #define IEEE80211_STYPE_BACK_REQ 0x0080 |
74 | #define IEEE80211_STYPE_BACK 0x0090 | |
a9de8ce0 JB |
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 */ | |
c237899d MW |
102 | #define IEEE80211_MAX_FRAG_THRESHOLD 2352 |
103 | #define IEEE80211_MAX_RTS_THRESHOLD 2353 | |
a9de8ce0 JB |
104 | #define IEEE80211_MAX_AID 2007 |
105 | #define IEEE80211_MAX_TIM_LEN 251 | |
a9de8ce0 JB |
106 | /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section |
107 | 6.2.1.1.2. | |
108 | ||
c237899d MW |
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 | |
a9de8ce0 JB |
114 | |
115 | #define IEEE80211_MAX_SSID_LEN 32 | |
1239cd58 | 116 | |
37c57989 | 117 | #define IEEE80211_MAX_MESH_ID_LEN 32 |
1239cd58 JB |
118 | #define IEEE80211_MESH_CONFIG_LEN 19 |
119 | ||
fd7c8a40 | 120 | #define IEEE80211_QOS_CTL_LEN 2 |
238f74a2 HH |
121 | #define IEEE80211_QOS_CTL_TID_MASK 0x000F |
122 | #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007 | |
a9de8ce0 JB |
123 | |
124 | struct ieee80211_hdr { | |
125 | __le16 frame_control; | |
126 | __le16 duration_id; | |
127 | u8 addr1[6]; | |
128 | u8 addr2[6]; | |
129 | u8 addr3[6]; | |
130 | __le16 seq_ctrl; | |
131 | u8 addr4[6]; | |
132 | } __attribute__ ((packed)); | |
133 | ||
fd7c8a40 HH |
134 | /** |
135 | * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set | |
136 | * @fc: frame control bytes in little-endian byteorder | |
137 | */ | |
138 | static inline int ieee80211_has_tods(__le16 fc) | |
139 | { | |
140 | return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0; | |
141 | } | |
142 | ||
143 | /** | |
144 | * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set | |
145 | * @fc: frame control bytes in little-endian byteorder | |
146 | */ | |
147 | static inline int ieee80211_has_fromds(__le16 fc) | |
148 | { | |
149 | return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0; | |
150 | } | |
151 | ||
152 | /** | |
153 | * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set | |
154 | * @fc: frame control bytes in little-endian byteorder | |
155 | */ | |
156 | static inline int ieee80211_has_a4(__le16 fc) | |
157 | { | |
158 | __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); | |
159 | return (fc & tmp) == tmp; | |
160 | } | |
161 | ||
162 | /** | |
163 | * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set | |
164 | * @fc: frame control bytes in little-endian byteorder | |
165 | */ | |
166 | static inline int ieee80211_has_morefrags(__le16 fc) | |
167 | { | |
168 | return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0; | |
169 | } | |
170 | ||
171 | /** | |
172 | * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set | |
173 | * @fc: frame control bytes in little-endian byteorder | |
174 | */ | |
175 | static inline int ieee80211_has_retry(__le16 fc) | |
176 | { | |
177 | return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0; | |
178 | } | |
179 | ||
180 | /** | |
181 | * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set | |
182 | * @fc: frame control bytes in little-endian byteorder | |
183 | */ | |
184 | static inline int ieee80211_has_pm(__le16 fc) | |
185 | { | |
186 | return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0; | |
187 | } | |
188 | ||
189 | /** | |
190 | * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set | |
191 | * @fc: frame control bytes in little-endian byteorder | |
192 | */ | |
193 | static inline int ieee80211_has_moredata(__le16 fc) | |
194 | { | |
195 | return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0; | |
196 | } | |
197 | ||
198 | /** | |
199 | * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set | |
200 | * @fc: frame control bytes in little-endian byteorder | |
201 | */ | |
202 | static inline int ieee80211_has_protected(__le16 fc) | |
203 | { | |
204 | return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0; | |
205 | } | |
206 | ||
207 | /** | |
208 | * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set | |
209 | * @fc: frame control bytes in little-endian byteorder | |
210 | */ | |
211 | static inline int ieee80211_has_order(__le16 fc) | |
212 | { | |
213 | return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0; | |
214 | } | |
215 | ||
216 | /** | |
217 | * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT | |
218 | * @fc: frame control bytes in little-endian byteorder | |
219 | */ | |
220 | static inline int ieee80211_is_mgmt(__le16 fc) | |
221 | { | |
222 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == | |
223 | cpu_to_le16(IEEE80211_FTYPE_MGMT); | |
224 | } | |
225 | ||
226 | /** | |
227 | * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL | |
228 | * @fc: frame control bytes in little-endian byteorder | |
229 | */ | |
230 | static inline int ieee80211_is_ctl(__le16 fc) | |
231 | { | |
232 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == | |
233 | cpu_to_le16(IEEE80211_FTYPE_CTL); | |
234 | } | |
235 | ||
236 | /** | |
237 | * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA | |
238 | * @fc: frame control bytes in little-endian byteorder | |
239 | */ | |
240 | static inline int ieee80211_is_data(__le16 fc) | |
241 | { | |
242 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == | |
243 | cpu_to_le16(IEEE80211_FTYPE_DATA); | |
244 | } | |
245 | ||
246 | /** | |
247 | * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set | |
248 | * @fc: frame control bytes in little-endian byteorder | |
249 | */ | |
250 | static inline int ieee80211_is_data_qos(__le16 fc) | |
251 | { | |
252 | /* | |
253 | * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need | |
254 | * to check the one bit | |
255 | */ | |
256 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) == | |
257 | cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA); | |
258 | } | |
259 | ||
260 | /** | |
261 | * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data | |
262 | * @fc: frame control bytes in little-endian byteorder | |
263 | */ | |
264 | static inline int ieee80211_is_data_present(__le16 fc) | |
265 | { | |
266 | /* | |
267 | * mask with 0x40 and test that that bit is clear to only return true | |
268 | * for the data-containing substypes. | |
269 | */ | |
270 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) == | |
271 | cpu_to_le16(IEEE80211_FTYPE_DATA); | |
272 | } | |
273 | ||
274 | /** | |
275 | * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ | |
276 | * @fc: frame control bytes in little-endian byteorder | |
277 | */ | |
278 | static inline int ieee80211_is_assoc_req(__le16 fc) | |
279 | { | |
280 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
281 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ); | |
282 | } | |
283 | ||
284 | /** | |
285 | * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP | |
286 | * @fc: frame control bytes in little-endian byteorder | |
287 | */ | |
288 | static inline int ieee80211_is_assoc_resp(__le16 fc) | |
289 | { | |
290 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
291 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP); | |
292 | } | |
293 | ||
294 | /** | |
295 | * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ | |
296 | * @fc: frame control bytes in little-endian byteorder | |
297 | */ | |
298 | static inline int ieee80211_is_reassoc_req(__le16 fc) | |
299 | { | |
300 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
301 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ); | |
302 | } | |
303 | ||
304 | /** | |
305 | * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP | |
306 | * @fc: frame control bytes in little-endian byteorder | |
307 | */ | |
308 | static inline int ieee80211_is_reassoc_resp(__le16 fc) | |
309 | { | |
310 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
311 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP); | |
312 | } | |
313 | ||
314 | /** | |
315 | * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ | |
316 | * @fc: frame control bytes in little-endian byteorder | |
317 | */ | |
318 | static inline int ieee80211_is_probe_req(__le16 fc) | |
319 | { | |
320 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
321 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ); | |
322 | } | |
323 | ||
324 | /** | |
325 | * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP | |
326 | * @fc: frame control bytes in little-endian byteorder | |
327 | */ | |
328 | static inline int ieee80211_is_probe_resp(__le16 fc) | |
329 | { | |
330 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
331 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); | |
332 | } | |
333 | ||
334 | /** | |
335 | * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON | |
336 | * @fc: frame control bytes in little-endian byteorder | |
337 | */ | |
338 | static inline int ieee80211_is_beacon(__le16 fc) | |
339 | { | |
340 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
341 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON); | |
342 | } | |
343 | ||
344 | /** | |
345 | * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM | |
346 | * @fc: frame control bytes in little-endian byteorder | |
347 | */ | |
348 | static inline int ieee80211_is_atim(__le16 fc) | |
349 | { | |
350 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
351 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM); | |
352 | } | |
353 | ||
354 | /** | |
355 | * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC | |
356 | * @fc: frame control bytes in little-endian byteorder | |
357 | */ | |
358 | static inline int ieee80211_is_disassoc(__le16 fc) | |
359 | { | |
360 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
361 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC); | |
362 | } | |
363 | ||
364 | /** | |
365 | * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH | |
366 | * @fc: frame control bytes in little-endian byteorder | |
367 | */ | |
368 | static inline int ieee80211_is_auth(__le16 fc) | |
369 | { | |
370 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
371 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); | |
372 | } | |
373 | ||
374 | /** | |
375 | * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH | |
376 | * @fc: frame control bytes in little-endian byteorder | |
377 | */ | |
378 | static inline int ieee80211_is_deauth(__le16 fc) | |
379 | { | |
380 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
381 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH); | |
382 | } | |
383 | ||
384 | /** | |
385 | * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION | |
386 | * @fc: frame control bytes in little-endian byteorder | |
387 | */ | |
388 | static inline int ieee80211_is_action(__le16 fc) | |
389 | { | |
390 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
391 | cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); | |
392 | } | |
393 | ||
394 | /** | |
395 | * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ | |
396 | * @fc: frame control bytes in little-endian byteorder | |
397 | */ | |
398 | static inline int ieee80211_is_back_req(__le16 fc) | |
399 | { | |
400 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
401 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ); | |
402 | } | |
403 | ||
404 | /** | |
405 | * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK | |
406 | * @fc: frame control bytes in little-endian byteorder | |
407 | */ | |
408 | static inline int ieee80211_is_back(__le16 fc) | |
409 | { | |
410 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
411 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK); | |
412 | } | |
413 | ||
414 | /** | |
415 | * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL | |
416 | * @fc: frame control bytes in little-endian byteorder | |
417 | */ | |
418 | static inline int ieee80211_is_pspoll(__le16 fc) | |
419 | { | |
420 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
421 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); | |
422 | } | |
423 | ||
424 | /** | |
425 | * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS | |
426 | * @fc: frame control bytes in little-endian byteorder | |
427 | */ | |
428 | static inline int ieee80211_is_rts(__le16 fc) | |
429 | { | |
430 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
431 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); | |
432 | } | |
433 | ||
434 | /** | |
435 | * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS | |
436 | * @fc: frame control bytes in little-endian byteorder | |
437 | */ | |
438 | static inline int ieee80211_is_cts(__le16 fc) | |
439 | { | |
440 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
441 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); | |
442 | } | |
443 | ||
444 | /** | |
445 | * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK | |
446 | * @fc: frame control bytes in little-endian byteorder | |
447 | */ | |
448 | static inline int ieee80211_is_ack(__le16 fc) | |
449 | { | |
450 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
451 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK); | |
452 | } | |
453 | ||
454 | /** | |
455 | * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND | |
456 | * @fc: frame control bytes in little-endian byteorder | |
457 | */ | |
458 | static inline int ieee80211_is_cfend(__le16 fc) | |
459 | { | |
460 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
461 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND); | |
462 | } | |
463 | ||
464 | /** | |
465 | * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK | |
466 | * @fc: frame control bytes in little-endian byteorder | |
467 | */ | |
468 | static inline int ieee80211_is_cfendack(__le16 fc) | |
469 | { | |
470 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
471 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK); | |
472 | } | |
473 | ||
474 | /** | |
475 | * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC | |
476 | * @fc: frame control bytes in little-endian byteorder | |
477 | */ | |
478 | static inline int ieee80211_is_nullfunc(__le16 fc) | |
479 | { | |
480 | return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == | |
481 | cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC); | |
482 | } | |
a9de8ce0 | 483 | |
37c57989 LCC |
484 | struct ieee80211s_hdr { |
485 | u8 flags; | |
486 | u8 ttl; | |
51ceddad | 487 | __le32 seqnum; |
37c57989 LCC |
488 | u8 eaddr1[6]; |
489 | u8 eaddr2[6]; | |
490 | u8 eaddr3[6]; | |
491 | } __attribute__ ((packed)); | |
492 | ||
79617dee Y |
493 | /* Mesh flags */ |
494 | #define MESH_FLAGS_AE_A4 0x1 | |
495 | #define MESH_FLAGS_AE_A5_A6 0x2 | |
e31a16d6 | 496 | #define MESH_FLAGS_AE 0x3 |
79617dee Y |
497 | #define MESH_FLAGS_PS_DEEP 0x4 |
498 | ||
f2df3859 AK |
499 | /** |
500 | * struct ieee80211_quiet_ie | |
501 | * | |
502 | * This structure refers to "Quiet information element" | |
503 | */ | |
504 | struct ieee80211_quiet_ie { | |
505 | u8 count; | |
506 | u8 period; | |
507 | __le16 duration; | |
508 | __le16 offset; | |
509 | } __attribute__ ((packed)); | |
510 | ||
511 | /** | |
512 | * struct ieee80211_msrment_ie | |
513 | * | |
514 | * This structure refers to "Measurement Request/Report information element" | |
515 | */ | |
516 | struct ieee80211_msrment_ie { | |
517 | u8 token; | |
518 | u8 mode; | |
519 | u8 type; | |
520 | u8 request[0]; | |
521 | } __attribute__ ((packed)); | |
522 | ||
523 | /** | |
524 | * struct ieee80211_channel_sw_ie | |
525 | * | |
526 | * This structure refers to "Channel Switch Announcement information element" | |
527 | */ | |
528 | struct ieee80211_channel_sw_ie { | |
529 | u8 mode; | |
530 | u8 new_ch_num; | |
531 | u8 count; | |
532 | } __attribute__ ((packed)); | |
37c57989 | 533 | |
98f7dfd8 EG |
534 | /** |
535 | * struct ieee80211_tim | |
536 | * | |
537 | * This structure refers to "Traffic Indication Map information element" | |
538 | */ | |
539 | struct ieee80211_tim_ie { | |
540 | u8 dtim_count; | |
541 | u8 dtim_period; | |
542 | u8 bitmap_ctrl; | |
543 | /* variable size: 1 - 251 bytes */ | |
e7ec86f5 | 544 | u8 virtual_map[1]; |
98f7dfd8 EG |
545 | } __attribute__ ((packed)); |
546 | ||
9dfd6ba3 | 547 | #define WLAN_SA_QUERY_TR_ID_LEN 2 |
fea14732 | 548 | |
a9de8ce0 JB |
549 | struct ieee80211_mgmt { |
550 | __le16 frame_control; | |
551 | __le16 duration; | |
552 | u8 da[6]; | |
553 | u8 sa[6]; | |
554 | u8 bssid[6]; | |
555 | __le16 seq_ctrl; | |
556 | union { | |
557 | struct { | |
558 | __le16 auth_alg; | |
559 | __le16 auth_transaction; | |
560 | __le16 status_code; | |
561 | /* possibly followed by Challenge text */ | |
562 | u8 variable[0]; | |
563 | } __attribute__ ((packed)) auth; | |
564 | struct { | |
565 | __le16 reason_code; | |
566 | } __attribute__ ((packed)) deauth; | |
567 | struct { | |
568 | __le16 capab_info; | |
569 | __le16 listen_interval; | |
570 | /* followed by SSID and Supported rates */ | |
571 | u8 variable[0]; | |
572 | } __attribute__ ((packed)) assoc_req; | |
573 | struct { | |
574 | __le16 capab_info; | |
575 | __le16 status_code; | |
576 | __le16 aid; | |
577 | /* followed by Supported rates */ | |
578 | u8 variable[0]; | |
579 | } __attribute__ ((packed)) assoc_resp, reassoc_resp; | |
580 | struct { | |
581 | __le16 capab_info; | |
582 | __le16 listen_interval; | |
583 | u8 current_ap[6]; | |
584 | /* followed by SSID and Supported rates */ | |
585 | u8 variable[0]; | |
586 | } __attribute__ ((packed)) reassoc_req; | |
587 | struct { | |
588 | __le16 reason_code; | |
589 | } __attribute__ ((packed)) disassoc; | |
590 | struct { | |
591 | __le64 timestamp; | |
592 | __le16 beacon_int; | |
593 | __le16 capab_info; | |
594 | /* followed by some of SSID, Supported rates, | |
595 | * FH Params, DS Params, CF Params, IBSS Params, TIM */ | |
596 | u8 variable[0]; | |
597 | } __attribute__ ((packed)) beacon; | |
598 | struct { | |
599 | /* only variable items: SSID, Supported rates */ | |
600 | u8 variable[0]; | |
601 | } __attribute__ ((packed)) probe_req; | |
602 | struct { | |
603 | __le64 timestamp; | |
604 | __le16 beacon_int; | |
605 | __le16 capab_info; | |
606 | /* followed by some of SSID, Supported rates, | |
607 | * FH Params, DS Params, CF Params, IBSS Params */ | |
608 | u8 variable[0]; | |
609 | } __attribute__ ((packed)) probe_resp; | |
610 | struct { | |
611 | u8 category; | |
612 | union { | |
613 | struct { | |
614 | u8 action_code; | |
615 | u8 dialog_token; | |
616 | u8 status_code; | |
617 | u8 variable[0]; | |
618 | } __attribute__ ((packed)) wme_action; | |
619 | struct{ | |
620 | u8 action_code; | |
621 | u8 element_id; | |
622 | u8 length; | |
f2df3859 | 623 | struct ieee80211_channel_sw_ie sw_elem; |
a9de8ce0 | 624 | } __attribute__((packed)) chan_switch; |
f2df3859 AK |
625 | struct{ |
626 | u8 action_code; | |
627 | u8 dialog_token; | |
628 | u8 element_id; | |
629 | u8 length; | |
630 | struct ieee80211_msrment_ie msr_elem; | |
631 | } __attribute__((packed)) measurement; | |
6b4e3241 RR |
632 | struct{ |
633 | u8 action_code; | |
634 | u8 dialog_token; | |
635 | __le16 capab; | |
636 | __le16 timeout; | |
637 | __le16 start_seq_num; | |
638 | } __attribute__((packed)) addba_req; | |
639 | struct{ | |
640 | u8 action_code; | |
641 | u8 dialog_token; | |
642 | __le16 status; | |
643 | __le16 capab; | |
644 | __le16 timeout; | |
645 | } __attribute__((packed)) addba_resp; | |
646 | struct{ | |
647 | u8 action_code; | |
648 | __le16 params; | |
649 | __le16 reason_code; | |
650 | } __attribute__((packed)) delba; | |
37c57989 LCC |
651 | struct{ |
652 | u8 action_code; | |
653 | /* capab_info for open and confirm, | |
654 | * reason for close | |
655 | */ | |
656 | __le16 aux; | |
657 | /* Followed in plink_confirm by status | |
658 | * code, AID and supported rates, | |
659 | * and directly by supported rates in | |
660 | * plink_open and plink_close | |
661 | */ | |
662 | u8 variable[0]; | |
663 | } __attribute__((packed)) plink_action; | |
664 | struct{ | |
665 | u8 action_code; | |
666 | u8 variable[0]; | |
667 | } __attribute__((packed)) mesh_action; | |
fea14732 JM |
668 | struct { |
669 | u8 action; | |
670 | u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN]; | |
671 | } __attribute__ ((packed)) sa_query; | |
a9de8ce0 JB |
672 | } u; |
673 | } __attribute__ ((packed)) action; | |
674 | } u; | |
675 | } __attribute__ ((packed)); | |
676 | ||
44d414db JB |
677 | /* mgmt header + 1 byte category code */ |
678 | #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u) | |
679 | ||
a9de8ce0 | 680 | |
765cb46a JM |
681 | /* Management MIC information element (IEEE 802.11w) */ |
682 | struct ieee80211_mmie { | |
683 | u8 element_id; | |
684 | u8 length; | |
685 | __le16 key_id; | |
686 | u8 sequence_number[6]; | |
687 | u8 mic[8]; | |
688 | } __attribute__ ((packed)); | |
689 | ||
a9de8ce0 JB |
690 | /* Control frames */ |
691 | struct ieee80211_rts { | |
692 | __le16 frame_control; | |
693 | __le16 duration; | |
694 | u8 ra[6]; | |
695 | u8 ta[6]; | |
696 | } __attribute__ ((packed)); | |
697 | ||
698 | struct ieee80211_cts { | |
699 | __le16 frame_control; | |
700 | __le16 duration; | |
701 | u8 ra[6]; | |
702 | } __attribute__ ((packed)); | |
703 | ||
fc6971d4 JM |
704 | struct ieee80211_pspoll { |
705 | __le16 frame_control; | |
706 | __le16 aid; | |
707 | u8 bssid[6]; | |
708 | u8 ta[6]; | |
709 | } __attribute__ ((packed)); | |
710 | ||
6b4e3241 RR |
711 | /** |
712 | * struct ieee80211_bar - HT Block Ack Request | |
713 | * | |
714 | * This structure refers to "HT BlockAckReq" as | |
715 | * described in 802.11n draft section 7.2.1.7.1 | |
716 | */ | |
717 | struct ieee80211_bar { | |
718 | __le16 frame_control; | |
719 | __le16 duration; | |
720 | __u8 ra[6]; | |
721 | __u8 ta[6]; | |
a8b47ea3 RR |
722 | __le16 control; |
723 | __le16 start_seq_num; | |
6b4e3241 RR |
724 | } __attribute__((packed)); |
725 | ||
429a3805 RR |
726 | /* 802.11 BAR control masks */ |
727 | #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 | |
728 | #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 | |
729 | ||
d9fe60de JB |
730 | |
731 | #define IEEE80211_HT_MCS_MASK_LEN 10 | |
732 | ||
733 | /** | |
734 | * struct ieee80211_mcs_info - MCS information | |
735 | * @rx_mask: RX mask | |
736 | * @rx_highest: highest supported RX rate | |
737 | * @tx_params: TX parameters | |
738 | */ | |
739 | struct ieee80211_mcs_info { | |
740 | u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN]; | |
741 | __le16 rx_highest; | |
742 | u8 tx_params; | |
743 | u8 reserved[3]; | |
744 | } __attribute__((packed)); | |
745 | ||
746 | /* 802.11n HT capability MSC set */ | |
747 | #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff | |
748 | #define IEEE80211_HT_MCS_TX_DEFINED 0x01 | |
749 | #define IEEE80211_HT_MCS_TX_RX_DIFF 0x02 | |
750 | /* value 0 == 1 stream etc */ | |
751 | #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C | |
752 | #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2 | |
753 | #define IEEE80211_HT_MCS_TX_MAX_STREAMS 4 | |
754 | #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10 | |
755 | ||
756 | /* | |
757 | * 802.11n D5.0 20.3.5 / 20.6 says: | |
758 | * - indices 0 to 7 and 32 are single spatial stream | |
759 | * - 8 to 31 are multiple spatial streams using equal modulation | |
760 | * [8..15 for two streams, 16..23 for three and 24..31 for four] | |
761 | * - remainder are multiple spatial streams using unequal modulation | |
762 | */ | |
763 | #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33 | |
764 | #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \ | |
765 | (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8) | |
766 | ||
6b4e3241 RR |
767 | /** |
768 | * struct ieee80211_ht_cap - HT capabilities | |
769 | * | |
d9fe60de JB |
770 | * This structure is the "HT capabilities element" as |
771 | * described in 802.11n D5.0 7.3.2.57 | |
6b4e3241 RR |
772 | */ |
773 | struct ieee80211_ht_cap { | |
774 | __le16 cap_info; | |
775 | u8 ampdu_params_info; | |
d9fe60de JB |
776 | |
777 | /* 16 bytes MCS information */ | |
778 | struct ieee80211_mcs_info mcs; | |
779 | ||
6b4e3241 RR |
780 | __le16 extended_ht_cap_info; |
781 | __le32 tx_BF_cap_info; | |
782 | u8 antenna_selection_info; | |
783 | } __attribute__ ((packed)); | |
784 | ||
d9fe60de JB |
785 | /* 802.11n HT capabilities masks (for cap_info) */ |
786 | #define IEEE80211_HT_CAP_LDPC_CODING 0x0001 | |
787 | #define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002 | |
788 | #define IEEE80211_HT_CAP_SM_PS 0x000C | |
789 | #define IEEE80211_HT_CAP_GRN_FLD 0x0010 | |
790 | #define IEEE80211_HT_CAP_SGI_20 0x0020 | |
791 | #define IEEE80211_HT_CAP_SGI_40 0x0040 | |
792 | #define IEEE80211_HT_CAP_TX_STBC 0x0080 | |
793 | #define IEEE80211_HT_CAP_RX_STBC 0x0300 | |
794 | #define IEEE80211_HT_CAP_DELAY_BA 0x0400 | |
795 | #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800 | |
796 | #define IEEE80211_HT_CAP_DSSSCCK40 0x1000 | |
797 | #define IEEE80211_HT_CAP_PSMP_SUPPORT 0x2000 | |
798 | #define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000 | |
799 | #define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000 | |
800 | ||
801 | /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */ | |
802 | #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03 | |
803 | #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C | |
804 | ||
6b4e3241 | 805 | /** |
d9fe60de | 806 | * struct ieee80211_ht_info - HT information |
6b4e3241 | 807 | * |
d9fe60de JB |
808 | * This structure is the "HT information element" as |
809 | * described in 802.11n D5.0 7.3.2.58 | |
6b4e3241 | 810 | */ |
d9fe60de | 811 | struct ieee80211_ht_info { |
6b4e3241 RR |
812 | u8 control_chan; |
813 | u8 ht_param; | |
814 | __le16 operation_mode; | |
815 | __le16 stbc_param; | |
816 | u8 basic_set[16]; | |
817 | } __attribute__ ((packed)); | |
818 | ||
d9fe60de JB |
819 | /* for ht_param */ |
820 | #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03 | |
821 | #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00 | |
822 | #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01 | |
823 | #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03 | |
824 | #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04 | |
825 | #define IEEE80211_HT_PARAM_RIFS_MODE 0x08 | |
826 | #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10 | |
827 | #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0 | |
828 | ||
829 | /* for operation_mode */ | |
830 | #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003 | |
831 | #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0 | |
832 | #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1 | |
833 | #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2 | |
834 | #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3 | |
835 | #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004 | |
836 | #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010 | |
837 | ||
838 | /* for stbc_param */ | |
839 | #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040 | |
840 | #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 | |
841 | #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100 | |
842 | #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200 | |
843 | #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400 | |
844 | #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800 | |
845 | ||
a9de8ce0 | 846 | |
44d414db JB |
847 | /* block-ack parameters */ |
848 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
849 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
850 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
851 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 | |
852 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
853 | ||
854 | /* | |
855 | * A-PMDU buffer sizes | |
856 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) | |
857 | */ | |
858 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
859 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
860 | ||
861 | ||
00c5ae2f TW |
862 | /* Spatial Multiplexing Power Save Modes */ |
863 | #define WLAN_HT_CAP_SM_PS_STATIC 0 | |
864 | #define WLAN_HT_CAP_SM_PS_DYNAMIC 1 | |
865 | #define WLAN_HT_CAP_SM_PS_INVALID 2 | |
866 | #define WLAN_HT_CAP_SM_PS_DISABLED 3 | |
e53cfe0e | 867 | |
a9de8ce0 JB |
868 | /* Authentication algorithms */ |
869 | #define WLAN_AUTH_OPEN 0 | |
870 | #define WLAN_AUTH_SHARED_KEY 1 | |
636a5d36 | 871 | #define WLAN_AUTH_FT 2 |
bb608e9d | 872 | #define WLAN_AUTH_LEAP 128 |
a9de8ce0 JB |
873 | |
874 | #define WLAN_AUTH_CHALLENGE_LEN 128 | |
875 | ||
876 | #define WLAN_CAPABILITY_ESS (1<<0) | |
877 | #define WLAN_CAPABILITY_IBSS (1<<1) | |
878 | #define WLAN_CAPABILITY_CF_POLLABLE (1<<2) | |
879 | #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) | |
880 | #define WLAN_CAPABILITY_PRIVACY (1<<4) | |
881 | #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) | |
882 | #define WLAN_CAPABILITY_PBCC (1<<6) | |
883 | #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) | |
b6623486 | 884 | |
a9de8ce0 JB |
885 | /* 802.11h */ |
886 | #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) | |
887 | #define WLAN_CAPABILITY_QOS (1<<9) | |
888 | #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) | |
889 | #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) | |
b6623486 AK |
890 | /* measurement */ |
891 | #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0) | |
892 | #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1) | |
893 | #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2) | |
894 | ||
895 | #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0 | |
896 | #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1 | |
897 | #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2 | |
898 | ||
a9de8ce0 | 899 | |
5628221c DD |
900 | /* 802.11g ERP information element */ |
901 | #define WLAN_ERP_NON_ERP_PRESENT (1<<0) | |
902 | #define WLAN_ERP_USE_PROTECTION (1<<1) | |
903 | #define WLAN_ERP_BARKER_PREAMBLE (1<<2) | |
904 | ||
905 | /* WLAN_ERP_BARKER_PREAMBLE values */ | |
906 | enum { | |
907 | WLAN_ERP_PREAMBLE_SHORT = 0, | |
908 | WLAN_ERP_PREAMBLE_LONG = 1, | |
909 | }; | |
910 | ||
a9de8ce0 JB |
911 | /* Status codes */ |
912 | enum ieee80211_statuscode { | |
913 | WLAN_STATUS_SUCCESS = 0, | |
914 | WLAN_STATUS_UNSPECIFIED_FAILURE = 1, | |
915 | WLAN_STATUS_CAPS_UNSUPPORTED = 10, | |
916 | WLAN_STATUS_REASSOC_NO_ASSOC = 11, | |
917 | WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12, | |
918 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13, | |
919 | WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14, | |
920 | WLAN_STATUS_CHALLENGE_FAIL = 15, | |
921 | WLAN_STATUS_AUTH_TIMEOUT = 16, | |
922 | WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17, | |
923 | WLAN_STATUS_ASSOC_DENIED_RATES = 18, | |
924 | /* 802.11b */ | |
925 | WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19, | |
926 | WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20, | |
927 | WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21, | |
928 | /* 802.11h */ | |
929 | WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22, | |
930 | WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23, | |
931 | WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24, | |
932 | /* 802.11g */ | |
933 | WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25, | |
934 | WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26, | |
63a5ab82 JM |
935 | /* 802.11w */ |
936 | WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30, | |
937 | WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31, | |
a9de8ce0 JB |
938 | /* 802.11i */ |
939 | WLAN_STATUS_INVALID_IE = 40, | |
940 | WLAN_STATUS_INVALID_GROUP_CIPHER = 41, | |
941 | WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42, | |
942 | WLAN_STATUS_INVALID_AKMP = 43, | |
943 | WLAN_STATUS_UNSUPP_RSN_VERSION = 44, | |
944 | WLAN_STATUS_INVALID_RSN_IE_CAP = 45, | |
945 | WLAN_STATUS_CIPHER_SUITE_REJECTED = 46, | |
6b4e3241 RR |
946 | /* 802.11e */ |
947 | WLAN_STATUS_UNSPECIFIED_QOS = 32, | |
948 | WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33, | |
949 | WLAN_STATUS_ASSOC_DENIED_LOWACK = 34, | |
950 | WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35, | |
951 | WLAN_STATUS_REQUEST_DECLINED = 37, | |
952 | WLAN_STATUS_INVALID_QOS_PARAM = 38, | |
953 | WLAN_STATUS_CHANGE_TSPEC = 39, | |
954 | WLAN_STATUS_WAIT_TS_DELAY = 47, | |
955 | WLAN_STATUS_NO_DIRECT_LINK = 48, | |
956 | WLAN_STATUS_STA_NOT_PRESENT = 49, | |
957 | WLAN_STATUS_STA_NOT_QSTA = 50, | |
a9de8ce0 JB |
958 | }; |
959 | ||
960 | ||
961 | /* Reason codes */ | |
962 | enum ieee80211_reasoncode { | |
963 | WLAN_REASON_UNSPECIFIED = 1, | |
964 | WLAN_REASON_PREV_AUTH_NOT_VALID = 2, | |
965 | WLAN_REASON_DEAUTH_LEAVING = 3, | |
966 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4, | |
967 | WLAN_REASON_DISASSOC_AP_BUSY = 5, | |
968 | WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6, | |
969 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7, | |
970 | WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8, | |
971 | WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9, | |
972 | /* 802.11h */ | |
973 | WLAN_REASON_DISASSOC_BAD_POWER = 10, | |
974 | WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11, | |
975 | /* 802.11i */ | |
976 | WLAN_REASON_INVALID_IE = 13, | |
977 | WLAN_REASON_MIC_FAILURE = 14, | |
978 | WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, | |
979 | WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16, | |
980 | WLAN_REASON_IE_DIFFERENT = 17, | |
981 | WLAN_REASON_INVALID_GROUP_CIPHER = 18, | |
982 | WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19, | |
983 | WLAN_REASON_INVALID_AKMP = 20, | |
984 | WLAN_REASON_UNSUPP_RSN_VERSION = 21, | |
985 | WLAN_REASON_INVALID_RSN_IE_CAP = 22, | |
986 | WLAN_REASON_IEEE8021X_FAILED = 23, | |
987 | WLAN_REASON_CIPHER_SUITE_REJECTED = 24, | |
6b4e3241 RR |
988 | /* 802.11e */ |
989 | WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32, | |
990 | WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33, | |
991 | WLAN_REASON_DISASSOC_LOW_ACK = 34, | |
992 | WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35, | |
993 | WLAN_REASON_QSTA_LEAVE_QBSS = 36, | |
994 | WLAN_REASON_QSTA_NOT_USE = 37, | |
995 | WLAN_REASON_QSTA_REQUIRE_SETUP = 38, | |
996 | WLAN_REASON_QSTA_TIMEOUT = 39, | |
997 | WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45, | |
a9de8ce0 JB |
998 | }; |
999 | ||
1000 | ||
1001 | /* Information Element IDs */ | |
1002 | enum ieee80211_eid { | |
1003 | WLAN_EID_SSID = 0, | |
1004 | WLAN_EID_SUPP_RATES = 1, | |
1005 | WLAN_EID_FH_PARAMS = 2, | |
1006 | WLAN_EID_DS_PARAMS = 3, | |
1007 | WLAN_EID_CF_PARAMS = 4, | |
1008 | WLAN_EID_TIM = 5, | |
1009 | WLAN_EID_IBSS_PARAMS = 6, | |
1010 | WLAN_EID_CHALLENGE = 16, | |
1011 | /* 802.11d */ | |
1012 | WLAN_EID_COUNTRY = 7, | |
1013 | WLAN_EID_HP_PARAMS = 8, | |
1014 | WLAN_EID_HP_TABLE = 9, | |
1015 | WLAN_EID_REQUEST = 10, | |
6b4e3241 RR |
1016 | /* 802.11e */ |
1017 | WLAN_EID_QBSS_LOAD = 11, | |
1018 | WLAN_EID_EDCA_PARAM_SET = 12, | |
1019 | WLAN_EID_TSPEC = 13, | |
1020 | WLAN_EID_TCLAS = 14, | |
1021 | WLAN_EID_SCHEDULE = 15, | |
1022 | WLAN_EID_TS_DELAY = 43, | |
1023 | WLAN_EID_TCLAS_PROCESSING = 44, | |
1024 | WLAN_EID_QOS_CAPA = 46, | |
d619ee08 LCC |
1025 | /* 802.11s |
1026 | * | |
1027 | * All mesh EID numbers are pending IEEE 802.11 ANA approval. | |
1028 | * The numbers have been incremented from those suggested in | |
1029 | * 802.11s/D2.0 so that MESH_CONFIG does not conflict with | |
1030 | * EXT_SUPP_RATES. | |
1031 | */ | |
1032 | WLAN_EID_MESH_CONFIG = 51, | |
1033 | WLAN_EID_MESH_ID = 52, | |
1034 | WLAN_EID_PEER_LINK = 55, | |
1035 | WLAN_EID_PREQ = 68, | |
1036 | WLAN_EID_PREP = 69, | |
1037 | WLAN_EID_PERR = 70, | |
a9de8ce0 JB |
1038 | /* 802.11h */ |
1039 | WLAN_EID_PWR_CONSTRAINT = 32, | |
1040 | WLAN_EID_PWR_CAPABILITY = 33, | |
1041 | WLAN_EID_TPC_REQUEST = 34, | |
1042 | WLAN_EID_TPC_REPORT = 35, | |
1043 | WLAN_EID_SUPPORTED_CHANNELS = 36, | |
1044 | WLAN_EID_CHANNEL_SWITCH = 37, | |
1045 | WLAN_EID_MEASURE_REQUEST = 38, | |
1046 | WLAN_EID_MEASURE_REPORT = 39, | |
1047 | WLAN_EID_QUIET = 40, | |
1048 | WLAN_EID_IBSS_DFS = 41, | |
1049 | /* 802.11g */ | |
1050 | WLAN_EID_ERP_INFO = 42, | |
1051 | WLAN_EID_EXT_SUPP_RATES = 50, | |
6b4e3241 RR |
1052 | /* 802.11n */ |
1053 | WLAN_EID_HT_CAPABILITY = 45, | |
d9fe60de | 1054 | WLAN_EID_HT_INFORMATION = 61, |
a9de8ce0 JB |
1055 | /* 802.11i */ |
1056 | WLAN_EID_RSN = 48, | |
f797eb7e | 1057 | WLAN_EID_TIMEOUT_INTERVAL = 56, |
765cb46a | 1058 | WLAN_EID_MMIE = 76 /* 802.11w */, |
a9de8ce0 JB |
1059 | WLAN_EID_WPA = 221, |
1060 | WLAN_EID_GENERIC = 221, | |
1061 | WLAN_EID_VENDOR_SPECIFIC = 221, | |
1062 | WLAN_EID_QOS_PARAMETER = 222 | |
1063 | }; | |
1064 | ||
6b4e3241 RR |
1065 | /* Action category code */ |
1066 | enum ieee80211_category { | |
1067 | WLAN_CATEGORY_SPECTRUM_MGMT = 0, | |
1068 | WLAN_CATEGORY_QOS = 1, | |
1069 | WLAN_CATEGORY_DLS = 2, | |
1070 | WLAN_CATEGORY_BACK = 3, | |
fb733336 | 1071 | WLAN_CATEGORY_PUBLIC = 4, |
528769cf | 1072 | WLAN_CATEGORY_HT = 7, |
fea14732 | 1073 | WLAN_CATEGORY_SA_QUERY = 8, |
528769cf | 1074 | WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9, |
6b4e3241 | 1075 | WLAN_CATEGORY_WMM = 17, |
528769cf JM |
1076 | WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, |
1077 | WLAN_CATEGORY_VENDOR_SPECIFIC = 127, | |
6b4e3241 RR |
1078 | }; |
1079 | ||
f2df3859 AK |
1080 | /* SPECTRUM_MGMT action code */ |
1081 | enum ieee80211_spectrum_mgmt_actioncode { | |
1082 | WLAN_ACTION_SPCT_MSR_REQ = 0, | |
1083 | WLAN_ACTION_SPCT_MSR_RPRT = 1, | |
1084 | WLAN_ACTION_SPCT_TPC_REQ = 2, | |
1085 | WLAN_ACTION_SPCT_TPC_RPRT = 3, | |
1086 | WLAN_ACTION_SPCT_CHL_SWITCH = 4, | |
1087 | }; | |
1088 | ||
e31a16d6 ZY |
1089 | /* Security key length */ |
1090 | enum ieee80211_key_len { | |
1091 | WLAN_KEY_LEN_WEP40 = 5, | |
1092 | WLAN_KEY_LEN_WEP104 = 13, | |
1093 | WLAN_KEY_LEN_CCMP = 16, | |
1094 | WLAN_KEY_LEN_TKIP = 32, | |
1095 | }; | |
1096 | ||
3f2355cb LR |
1097 | /* |
1098 | * IEEE 802.11-2007 7.3.2.9 Country information element | |
1099 | * | |
1100 | * Minimum length is 8 octets, ie len must be evenly | |
1101 | * divisible by 2 | |
1102 | */ | |
1103 | ||
1104 | /* Although the spec says 8 I'm seeing 6 in practice */ | |
1105 | #define IEEE80211_COUNTRY_IE_MIN_LEN 6 | |
1106 | ||
1107 | /* | |
1108 | * For regulatory extension stuff see IEEE 802.11-2007 | |
1109 | * Annex I (page 1141) and Annex J (page 1147). Also | |
1110 | * review 7.3.2.9. | |
1111 | * | |
1112 | * When dot11RegulatoryClassesRequired is true and the | |
1113 | * first_channel/reg_extension_id is >= 201 then the IE | |
1114 | * compromises of the 'ext' struct represented below: | |
1115 | * | |
1116 | * - Regulatory extension ID - when generating IE this just needs | |
1117 | * to be monotonically increasing for each triplet passed in | |
1118 | * the IE | |
1119 | * - Regulatory class - index into set of rules | |
1120 | * - Coverage class - index into air propagation time (Table 7-27), | |
1121 | * in microseconds, you can compute the air propagation time from | |
1122 | * the index by multiplying by 3, so index 10 yields a propagation | |
1123 | * of 10 us. Valid values are 0-31, values 32-255 are not defined | |
1124 | * yet. A value of 0 inicates air propagation of <= 1 us. | |
1125 | * | |
1126 | * See also Table I.2 for Emission limit sets and table | |
1127 | * I.3 for Behavior limit sets. Table J.1 indicates how to map | |
1128 | * a reg_class to an emission limit set and behavior limit set. | |
1129 | */ | |
1130 | #define IEEE80211_COUNTRY_EXTENSION_ID 201 | |
1131 | ||
1132 | /* | |
1133 | * Channels numbers in the IE must be monotonically increasing | |
1134 | * if dot11RegulatoryClassesRequired is not true. | |
1135 | * | |
1136 | * If dot11RegulatoryClassesRequired is true consecutive | |
1137 | * subband triplets following a regulatory triplet shall | |
1138 | * have monotonically increasing first_channel number fields. | |
1139 | * | |
1140 | * Channel numbers shall not overlap. | |
1141 | * | |
1142 | * Note that max_power is signed. | |
1143 | */ | |
1144 | struct ieee80211_country_ie_triplet { | |
1145 | union { | |
1146 | struct { | |
1147 | u8 first_channel; | |
1148 | u8 num_channels; | |
1149 | s8 max_power; | |
1150 | } __attribute__ ((packed)) chans; | |
1151 | struct { | |
1152 | u8 reg_extension_id; | |
1153 | u8 reg_class; | |
1154 | u8 coverage_class; | |
1155 | } __attribute__ ((packed)) ext; | |
1156 | }; | |
1157 | } __attribute__ ((packed)); | |
1158 | ||
f797eb7e JM |
1159 | enum ieee80211_timeout_interval_type { |
1160 | WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */, | |
1161 | WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */, | |
1162 | WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */, | |
1163 | }; | |
1164 | ||
6b4e3241 RR |
1165 | /* BACK action code */ |
1166 | enum ieee80211_back_actioncode { | |
1167 | WLAN_ACTION_ADDBA_REQ = 0, | |
1168 | WLAN_ACTION_ADDBA_RESP = 1, | |
1169 | WLAN_ACTION_DELBA = 2, | |
1170 | }; | |
1171 | ||
07db2183 RR |
1172 | /* BACK (block-ack) parties */ |
1173 | enum ieee80211_back_parties { | |
1174 | WLAN_BACK_RECIPIENT = 0, | |
1175 | WLAN_BACK_INITIATOR = 1, | |
1176 | WLAN_BACK_TIMER = 2, | |
1177 | }; | |
1178 | ||
fea14732 JM |
1179 | /* SA Query action */ |
1180 | enum ieee80211_sa_query_action { | |
1181 | WLAN_ACTION_SA_QUERY_REQUEST = 0, | |
1182 | WLAN_ACTION_SA_QUERY_RESPONSE = 1, | |
1183 | }; | |
1184 | ||
1185 | ||
6b4e3241 RR |
1186 | /* A-MSDU 802.11n */ |
1187 | #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080 | |
1188 | ||
a9de8ce0 JB |
1189 | /* cipher suite selectors */ |
1190 | #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 | |
1191 | #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 | |
1192 | #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 | |
1193 | /* reserved: 0x000FAC03 */ | |
1194 | #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 | |
1195 | #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 | |
3cfcf6ac | 1196 | #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 |
a9de8ce0 JB |
1197 | |
1198 | #define WLAN_MAX_KEY_LEN 32 | |
1199 | ||
fd7c8a40 HH |
1200 | /** |
1201 | * ieee80211_get_qos_ctl - get pointer to qos control bytes | |
1202 | * @hdr: the frame | |
1203 | * | |
1204 | * The qos ctrl bytes come after the frame_control, duration, seq_num | |
1205 | * and 3 or 4 addresses of length ETH_ALEN. | |
1206 | * 3 addr: 2 + 2 + 2 + 3*6 = 24 | |
1207 | * 4 addr: 2 + 2 + 2 + 4*6 = 30 | |
1208 | */ | |
1209 | static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr) | |
1210 | { | |
1211 | if (ieee80211_has_a4(hdr->frame_control)) | |
1212 | return (u8 *)hdr + 30; | |
1213 | else | |
1214 | return (u8 *)hdr + 24; | |
1215 | } | |
1216 | ||
f97df02e JB |
1217 | /** |
1218 | * ieee80211_get_SA - get pointer to SA | |
fd7c8a40 | 1219 | * @hdr: the frame |
f97df02e JB |
1220 | * |
1221 | * Given an 802.11 frame, this function returns the offset | |
1222 | * to the source address (SA). It does not verify that the | |
1223 | * header is long enough to contain the address, and the | |
1224 | * header must be long enough to contain the frame control | |
1225 | * field. | |
f97df02e JB |
1226 | */ |
1227 | static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr) | |
1228 | { | |
fd7c8a40 | 1229 | if (ieee80211_has_a4(hdr->frame_control)) |
5a433b3a | 1230 | return hdr->addr4; |
fd7c8a40 HH |
1231 | if (ieee80211_has_fromds(hdr->frame_control)) |
1232 | return hdr->addr3; | |
1233 | return hdr->addr2; | |
f97df02e JB |
1234 | } |
1235 | ||
1236 | /** | |
1237 | * ieee80211_get_DA - get pointer to DA | |
fd7c8a40 | 1238 | * @hdr: the frame |
f97df02e JB |
1239 | * |
1240 | * Given an 802.11 frame, this function returns the offset | |
1241 | * to the destination address (DA). It does not verify that | |
1242 | * the header is long enough to contain the address, and the | |
1243 | * header must be long enough to contain the frame control | |
1244 | * field. | |
f97df02e JB |
1245 | */ |
1246 | static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) | |
1247 | { | |
fd7c8a40 | 1248 | if (ieee80211_has_tods(hdr->frame_control)) |
f97df02e | 1249 | return hdr->addr3; |
5a433b3a HH |
1250 | else |
1251 | return hdr->addr1; | |
f97df02e JB |
1252 | } |
1253 | ||
fb733336 JM |
1254 | /** |
1255 | * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame | |
1256 | * @hdr: the frame (buffer must include at least the first octet of payload) | |
1257 | */ | |
1258 | static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) | |
1259 | { | |
1260 | if (ieee80211_is_disassoc(hdr->frame_control) || | |
1261 | ieee80211_is_deauth(hdr->frame_control)) | |
1262 | return true; | |
1263 | ||
1264 | if (ieee80211_is_action(hdr->frame_control)) { | |
1265 | u8 *category; | |
1266 | ||
1267 | /* | |
1268 | * Action frames, excluding Public Action frames, are Robust | |
1269 | * Management Frames. However, if we are looking at a Protected | |
1270 | * frame, skip the check since the data may be encrypted and | |
1271 | * the frame has already been found to be a Robust Management | |
1272 | * Frame (by the other end). | |
1273 | */ | |
1274 | if (ieee80211_has_protected(hdr->frame_control)) | |
1275 | return true; | |
1276 | category = ((u8 *) hdr) + 24; | |
528769cf JM |
1277 | return *category != WLAN_CATEGORY_PUBLIC && |
1278 | *category != WLAN_CATEGORY_HT && | |
1279 | *category != WLAN_CATEGORY_VENDOR_SPECIFIC; | |
fb733336 JM |
1280 | } |
1281 | ||
1282 | return false; | |
1283 | } | |
1284 | ||
9ee677c2 DK |
1285 | /** |
1286 | * ieee80211_fhss_chan_to_freq - get channel frequency | |
1287 | * @channel: the FHSS channel | |
1288 | * | |
1289 | * Convert IEEE802.11 FHSS channel to frequency (MHz) | |
1290 | * Ref IEEE 802.11-2007 section 14.6 | |
1291 | */ | |
1292 | static inline int ieee80211_fhss_chan_to_freq(int channel) | |
1293 | { | |
1294 | if ((channel > 1) && (channel < 96)) | |
1295 | return channel + 2400; | |
1296 | else | |
1297 | return -1; | |
1298 | } | |
1299 | ||
1300 | /** | |
1301 | * ieee80211_freq_to_fhss_chan - get channel | |
1302 | * @freq: the channels frequency | |
1303 | * | |
1304 | * Convert frequency (MHz) to IEEE802.11 FHSS channel | |
1305 | * Ref IEEE 802.11-2007 section 14.6 | |
1306 | */ | |
1307 | static inline int ieee80211_freq_to_fhss_chan(int freq) | |
1308 | { | |
1309 | if ((freq > 2401) && (freq < 2496)) | |
1310 | return freq - 2400; | |
1311 | else | |
1312 | return -1; | |
1313 | } | |
1314 | ||
1315 | /** | |
1316 | * ieee80211_dsss_chan_to_freq - get channel center frequency | |
1317 | * @channel: the DSSS channel | |
1318 | * | |
1319 | * Convert IEEE802.11 DSSS channel to the center frequency (MHz). | |
1320 | * Ref IEEE 802.11-2007 section 15.6 | |
1321 | */ | |
1322 | static inline int ieee80211_dsss_chan_to_freq(int channel) | |
1323 | { | |
1324 | if ((channel > 0) && (channel < 14)) | |
1325 | return 2407 + (channel * 5); | |
1326 | else if (channel == 14) | |
1327 | return 2484; | |
1328 | else | |
1329 | return -1; | |
1330 | } | |
1331 | ||
1332 | /** | |
1333 | * ieee80211_freq_to_dsss_chan - get channel | |
1334 | * @freq: the frequency | |
1335 | * | |
1336 | * Convert frequency (MHz) to IEEE802.11 DSSS channel | |
1337 | * Ref IEEE 802.11-2007 section 15.6 | |
1338 | * | |
1339 | * This routine selects the channel with the closest center frequency. | |
1340 | */ | |
1341 | static inline int ieee80211_freq_to_dsss_chan(int freq) | |
1342 | { | |
1343 | if ((freq >= 2410) && (freq < 2475)) | |
1344 | return (freq - 2405) / 5; | |
1345 | else if ((freq >= 2482) && (freq < 2487)) | |
1346 | return 14; | |
1347 | else | |
1348 | return -1; | |
1349 | } | |
1350 | ||
1351 | /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back | |
1352 | * Ref IEEE 802.11-2007 section 18.4.6.2 | |
1353 | * | |
1354 | * The channels and frequencies are the same as those defined for DSSS | |
1355 | */ | |
1356 | #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan) | |
1357 | #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq) | |
1358 | ||
1359 | /* Convert IEEE802.11 ERP channel to frequency (MHz) and back | |
1360 | * Ref IEEE 802.11-2007 section 19.4.2 | |
1361 | */ | |
1362 | #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan) | |
1363 | #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq) | |
1364 | ||
1365 | /** | |
1366 | * ieee80211_ofdm_chan_to_freq - get channel center frequency | |
1367 | * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz | |
1368 | * @channel: the OFDM channel | |
1369 | * | |
1370 | * Convert IEEE802.11 OFDM channel to center frequency (MHz) | |
1371 | * Ref IEEE 802.11-2007 section 17.3.8.3.2 | |
1372 | */ | |
1373 | static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel) | |
1374 | { | |
1375 | if ((channel > 0) && (channel <= 200) && | |
1376 | (s_freq >= 4000)) | |
1377 | return s_freq + (channel * 5); | |
1378 | else | |
1379 | return -1; | |
1380 | } | |
1381 | ||
1382 | /** | |
1383 | * ieee80211_freq_to_ofdm_channel - get channel | |
1384 | * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz | |
1385 | * @freq: the frequency | |
1386 | * | |
1387 | * Convert frequency (MHz) to IEEE802.11 OFDM channel | |
1388 | * Ref IEEE 802.11-2007 section 17.3.8.3.2 | |
1389 | * | |
1390 | * This routine selects the channel with the closest center frequency. | |
1391 | */ | |
1392 | static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq) | |
1393 | { | |
1394 | if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) && | |
1395 | (s_freq >= 4000)) | |
1396 | return (freq + 2 - s_freq) / 5; | |
1397 | else | |
1398 | return -1; | |
1399 | } | |
1400 | ||
10f644a4 JB |
1401 | /** |
1402 | * ieee80211_tu_to_usec - convert time units (TU) to microseconds | |
1403 | * @tu: the TUs | |
1404 | */ | |
1405 | static inline unsigned long ieee80211_tu_to_usec(unsigned long tu) | |
1406 | { | |
1407 | return 1024 * tu; | |
1408 | } | |
1409 | ||
e7ec86f5 JB |
1410 | /** |
1411 | * ieee80211_check_tim - check if AID bit is set in TIM | |
1412 | * @tim: the TIM IE | |
1413 | * @tim_len: length of the TIM IE | |
1414 | * @aid: the AID to look for | |
1415 | */ | |
1416 | static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim, | |
1417 | u8 tim_len, u16 aid) | |
1418 | { | |
1419 | u8 mask; | |
1420 | u8 index, indexn1, indexn2; | |
1421 | ||
1422 | if (unlikely(!tim || tim_len < sizeof(*tim))) | |
1423 | return false; | |
1424 | ||
1425 | aid &= 0x3fff; | |
1426 | index = aid / 8; | |
1427 | mask = 1 << (aid & 7); | |
1428 | ||
1429 | indexn1 = tim->bitmap_ctrl & 0xfe; | |
1430 | indexn2 = tim_len + indexn1 - 4; | |
1431 | ||
1432 | if (index < indexn1 || index > indexn2) | |
1433 | return false; | |
1434 | ||
1435 | index -= indexn1; | |
1436 | ||
1437 | return !!(tim->virtual_map[index] & mask); | |
1438 | } | |
1439 | ||
9387b7ca | 1440 | #endif /* LINUX_IEEE80211_H */ |