1 | /* $NetBSD: ieee80211.h,v 1.28 2016/09/16 09:25:30 mlelstv Exp $ */ |
2 | /*- |
3 | * Copyright (c) 2001 Atsushi Onoe |
4 | * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
17 | * |
18 | * Alternatively, this software may be distributed under the terms of the |
19 | * GNU General Public License ("GPL") version 2 as published by the Free |
20 | * Software Foundation. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
24 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
25 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
26 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
27 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
31 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
32 | * |
33 | * $FreeBSD: src/sys/net80211/ieee80211.h,v 1.10 2005/07/22 16:55:27 sam Exp $ |
34 | */ |
35 | #ifndef _NET80211_IEEE80211_H_ |
36 | #define _NET80211_IEEE80211_H_ |
37 | |
38 | /* |
39 | * 802.11 protocol definitions. |
40 | */ |
41 | |
42 | #define IEEE80211_ADDR_LEN 6 /* size of 802.11 address */ |
43 | /* is 802.11 address multicast/broadcast? */ |
44 | #define IEEE80211_IS_MULTICAST(_a) (*(_a) & 0x01) |
45 | |
46 | /* IEEE 802.11 PLCP header */ |
47 | struct ieee80211_plcp_hdr { |
48 | u_int16_t i_sfd; |
49 | u_int8_t i_signal; |
50 | u_int8_t i_service; |
51 | u_int16_t i_length; |
52 | u_int16_t i_crc; |
53 | } __packed; |
54 | |
55 | #define IEEE80211_PLCP_SFD 0xF3A0 |
56 | #define IEEE80211_PLCP_SERVICE 0x00 |
57 | |
58 | /* |
59 | * generic definitions for IEEE 802.11 frames |
60 | */ |
61 | struct ieee80211_frame { |
62 | u_int8_t i_fc[2]; |
63 | u_int8_t i_dur[2]; |
64 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
65 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
66 | u_int8_t i_addr3[IEEE80211_ADDR_LEN]; |
67 | u_int8_t i_seq[2]; |
68 | /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */ |
69 | /* see below */ |
70 | } __packed; |
71 | |
72 | struct ieee80211_qosframe { |
73 | u_int8_t i_fc[2]; |
74 | u_int8_t i_dur[2]; |
75 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
76 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
77 | u_int8_t i_addr3[IEEE80211_ADDR_LEN]; |
78 | u_int8_t i_seq[2]; |
79 | u_int8_t i_qos[2]; |
80 | /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */ |
81 | /* see below */ |
82 | } __packed; |
83 | |
84 | struct ieee80211_htframe { /* 11n */ |
85 | u_int8_t i_fc[2]; |
86 | u_int8_t i_dur[2]; |
87 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
88 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
89 | u_int8_t i_addr3[IEEE80211_ADDR_LEN]; |
90 | u_int8_t i_seq[2]; |
91 | u_int8_t i_qos[2]; |
92 | u_int8_t i_ht[4]; |
93 | } __packed; |
94 | |
95 | struct ieee80211_qoscntl { |
96 | u_int8_t i_qos[2]; |
97 | }; |
98 | |
99 | struct ieee80211_frame_addr4 { |
100 | u_int8_t i_fc[2]; |
101 | u_int8_t i_dur[2]; |
102 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
103 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
104 | u_int8_t i_addr3[IEEE80211_ADDR_LEN]; |
105 | u_int8_t i_seq[2]; |
106 | u_int8_t i_addr4[IEEE80211_ADDR_LEN]; |
107 | } __packed; |
108 | |
109 | |
110 | struct ieee80211_qosframe_addr4 { |
111 | u_int8_t i_fc[2]; |
112 | u_int8_t i_dur[2]; |
113 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
114 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
115 | u_int8_t i_addr3[IEEE80211_ADDR_LEN]; |
116 | u_int8_t i_seq[2]; |
117 | u_int8_t i_addr4[IEEE80211_ADDR_LEN]; |
118 | u_int8_t i_qos[2]; |
119 | } __packed; |
120 | |
121 | #define IEEE80211_FC0_VERSION_MASK 0x03 |
122 | #define IEEE80211_FC0_VERSION_SHIFT 0 |
123 | #define IEEE80211_FC0_VERSION_0 0x00 |
124 | #define IEEE80211_FC0_TYPE_MASK 0x0c |
125 | #define IEEE80211_FC0_TYPE_SHIFT 2 |
126 | #define IEEE80211_FC0_TYPE_MGT 0x00 |
127 | #define IEEE80211_FC0_TYPE_CTL 0x04 |
128 | #define IEEE80211_FC0_TYPE_DATA 0x08 |
129 | |
130 | #define IEEE80211_FC0_SUBTYPE_MASK 0xf0 |
131 | #define IEEE80211_FC0_SUBTYPE_SHIFT 4 |
132 | /* for TYPE_MGT */ |
133 | #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ 0x00 |
134 | #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP 0x10 |
135 | #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ 0x20 |
136 | #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP 0x30 |
137 | #define IEEE80211_FC0_SUBTYPE_PROBE_REQ 0x40 |
138 | #define IEEE80211_FC0_SUBTYPE_PROBE_RESP 0x50 |
139 | #define IEEE80211_FC0_SUBTYPE_BEACON 0x80 |
140 | #define IEEE80211_FC0_SUBTYPE_ATIM 0x90 |
141 | #define IEEE80211_FC0_SUBTYPE_DISASSOC 0xa0 |
142 | #define IEEE80211_FC0_SUBTYPE_AUTH 0xb0 |
143 | #define IEEE80211_FC0_SUBTYPE_DEAUTH 0xc0 |
144 | /* for TYPE_CTL */ |
145 | #define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 |
146 | #define IEEE80211_FC0_SUBTYPE_RTS 0xb0 |
147 | #define IEEE80211_FC0_SUBTYPE_CTS 0xc0 |
148 | #define IEEE80211_FC0_SUBTYPE_ACK 0xd0 |
149 | #define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 |
150 | #define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 |
151 | /* for TYPE_DATA (bit combination) */ |
152 | #define IEEE80211_FC0_SUBTYPE_DATA 0x00 |
153 | #define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 |
154 | #define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 |
155 | #define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 |
156 | #define IEEE80211_FC0_SUBTYPE_NODATA 0x40 |
157 | #define IEEE80211_FC0_SUBTYPE_CFACK 0x50 |
158 | #define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60 |
159 | #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70 |
160 | #define IEEE80211_FC0_SUBTYPE_QOS 0x80 |
161 | #define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 |
162 | |
163 | /* |
164 | * DS bit usage |
165 | * |
166 | * TA = transmitter address |
167 | * RA = receiver address |
168 | * DA = destination address |
169 | * SA = source address |
170 | * |
171 | * ToDS FromDS A1(RA) A2(TA) A3 A4 Use |
172 | * ----------------------------------------------------------------- |
173 | * 0 0 DA SA BSSID - IBSS/DLS |
174 | * 0 1 DA BSSID SA - AP -> STA |
175 | * 1 0 BSSID SA DA - AP <- STA |
176 | * 1 1 RA TA DA SA unspecified (WDS) |
177 | */ |
178 | #define IEEE80211_FC1_DIR_MASK 0x03 |
179 | #define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ |
180 | #define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ |
181 | #define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ |
182 | #define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ |
183 | |
184 | #define IEEE80211_IS_DSTODS(wh) \ |
185 | (((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) |
186 | |
187 | #define IEEE80211_FC1_MORE_FRAG 0x04 |
188 | #define IEEE80211_FC1_RETRY 0x08 |
189 | #define IEEE80211_FC1_PWR_MGT 0x10 |
190 | #define IEEE80211_FC1_MORE_DATA 0x20 |
191 | #define IEEE80211_FC1_PROTECTED 0x40 |
192 | #define IEEE80211_FC1_WEP 0x40 /* pre-RSNA compat */ |
193 | #define IEEE80211_FC1_ORDER 0x80 |
194 | |
195 | #define IEEE80211_SEQ_FRAG_MASK 0x000f |
196 | #define IEEE80211_SEQ_FRAG_SHIFT 0 |
197 | #define IEEE80211_SEQ_SEQ_MASK 0xfff0 |
198 | #define IEEE80211_SEQ_SEQ_SHIFT 4 |
199 | |
200 | #define IEEE80211_NWID_LEN 32 |
201 | |
202 | /* |
203 | * QoS Control field (see 7.1.3.5). |
204 | */ |
205 | /* bit 8 is reserved */ |
206 | #define IEEE80211_QOS_TXOP 0xff00 |
207 | #define IEEE80211_QOS_AMSDU 0x0080 /* 11n */ |
208 | #define IEEE80211_QOS_ACKPOLICY_NORMAL 0x0000 |
209 | #define IEEE80211_QOS_ACKPOLICY_NOACK 0x0020 |
210 | #define IEEE80211_QOS_ACKPOLICY_NOEXPLACK 0x0040 |
211 | #define IEEE80211_QOS_ACKPOLICY 0x0060 |
212 | #define IEEE80211_QOS_ACKPOLICY_S 5 |
213 | #define IEEE80211_QOS_ACKPOLICY_MASK 0x0060 |
214 | #define IEEE80211_QOS_ACKPOLICY_BA 0x0060 |
215 | #define IEEE80211_QOS_ESOP 0x0010 |
216 | #define IEEE80211_QOS_ESOP_S 4 |
217 | #define IEEE80211_QOS_TID 0x000f |
218 | |
219 | /* does frame have QoS sequence control data */ |
220 | #define IEEE80211_QOS_HAS_SEQ(wh) \ |
221 | (((wh)->i_fc[0] & \ |
222 | (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \ |
223 | (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) |
224 | |
225 | /* |
226 | * WME/802.11e information element. |
227 | */ |
228 | struct ieee80211_wme_info { |
229 | u_int8_t wme_id; /* IEEE80211_ELEMID_VENDOR */ |
230 | u_int8_t wme_len; /* length in bytes */ |
231 | u_int8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */ |
232 | u_int8_t wme_type; /* OUI type */ |
233 | u_int8_t wme_subtype; /* OUI subtype */ |
234 | u_int8_t wme_version; /* spec revision */ |
235 | u_int8_t wme_info; /* QoS info */ |
236 | } __packed; |
237 | |
238 | /* |
239 | * WME/802.11e Tspec Element |
240 | */ |
241 | struct ieee80211_wme_tspec { |
242 | u_int8_t ts_id; |
243 | u_int8_t ts_len; |
244 | u_int8_t ts_oui[3]; |
245 | u_int8_t ts_oui_type; |
246 | u_int8_t ts_oui_subtype; |
247 | u_int8_t ts_version; |
248 | u_int8_t ts_tsinfo[3]; |
249 | u_int8_t ts_nom_msdu[2]; |
250 | u_int8_t ts_max_msdu[2]; |
251 | u_int8_t ts_min_svc[4]; |
252 | u_int8_t ts_max_svc[4]; |
253 | u_int8_t ts_inactv_intv[4]; |
254 | u_int8_t ts_susp_intv[4]; |
255 | u_int8_t ts_start_svc[4]; |
256 | u_int8_t ts_min_rate[4]; |
257 | u_int8_t ts_mean_rate[4]; |
258 | u_int8_t ts_max_burst[4]; |
259 | u_int8_t ts_min_phy[4]; |
260 | u_int8_t ts_peak_rate[4]; |
261 | u_int8_t ts_delay[4]; |
262 | u_int8_t ts_surplus[2]; |
263 | u_int8_t ts_medium_time[2]; |
264 | } __packed; |
265 | |
266 | /* |
267 | * WME AC parameter field |
268 | */ |
269 | struct ieee80211_wme_acparams { |
270 | u_int8_t acp_aci_aifsn; |
271 | u_int8_t acp_logcwminmax; |
272 | u_int16_t acp_txop; |
273 | } __packed; |
274 | |
275 | /* WME stream classes */ |
276 | enum ieee80211_wme_ac { |
277 | WME_AC_BE = 0, /* best effort */ |
278 | WME_AC_BK = 1, /* background */ |
279 | WME_AC_VI = 2, /* video */ |
280 | WME_AC_VO = 3, /* voice */ |
281 | }; |
282 | #define WME_NUM_AC 4 /* 4 AC categories */ |
283 | |
284 | #define WME_PARAM_ACI 0x60 /* Mask for ACI field */ |
285 | #define WME_PARAM_ACI_S 5 /* Shift for ACI field */ |
286 | #define WME_PARAM_ACM 0x10 /* Mask for ACM bit */ |
287 | #define WME_PARAM_ACM_S 4 /* Shift for ACM bit */ |
288 | #define WME_PARAM_AIFSN 0x0f /* Mask for aifsn field */ |
289 | #define WME_PARAM_AIFSN_S 0 /* Shift for aifsn field */ |
290 | #define WME_PARAM_LOGCWMIN 0x0f /* Mask for CwMin field (in log) */ |
291 | #define WME_PARAM_LOGCWMIN_S 0 /* Shift for CwMin field */ |
292 | #define WME_PARAM_LOGCWMAX 0xf0 /* Mask for CwMax field (in log) */ |
293 | #define WME_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ |
294 | |
295 | #define WME_AC_TO_TID(_ac) ( \ |
296 | ((_ac) == WME_AC_VO) ? 6 : \ |
297 | ((_ac) == WME_AC_VI) ? 5 : \ |
298 | ((_ac) == WME_AC_BK) ? 1 : \ |
299 | 0) |
300 | |
301 | #define TID_TO_WME_AC(_tid) ( \ |
302 | ((_tid) < 1) ? WME_AC_BE : \ |
303 | ((_tid) < 3) ? WME_AC_BK : \ |
304 | ((_tid) < 6) ? WME_AC_VI : \ |
305 | WME_AC_VO) |
306 | |
307 | /* |
308 | * WME Parameter Element |
309 | */ |
310 | struct ieee80211_wme_param { |
311 | u_int8_t param_id; |
312 | u_int8_t param_len; |
313 | u_int8_t param_oui[3]; |
314 | u_int8_t param_oui_type; |
315 | u_int8_t param_oui_sybtype; |
316 | u_int8_t param_version; |
317 | u_int8_t param_qosInfo; |
318 | #define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */ |
319 | u_int8_t param_reserved; |
320 | struct ieee80211_wme_acparams params_acParams[WME_NUM_AC]; |
321 | } __packed; |
322 | |
323 | /* |
324 | * Management Notification Frame |
325 | */ |
326 | struct ieee80211_mnf { |
327 | u_int8_t mnf_category; |
328 | u_int8_t mnf_action; |
329 | u_int8_t mnf_dialog; |
330 | u_int8_t mnf_status; |
331 | } __packed; |
332 | #define MNF_SETUP_REQ 0 |
333 | #define MNF_SETUP_RESP 1 |
334 | #define MNF_TEARDOWN 2 |
335 | |
336 | /* |
337 | * Control frames. |
338 | */ |
339 | struct ieee80211_frame_min { |
340 | u_int8_t i_fc[2]; |
341 | u_int8_t i_dur[2]; |
342 | u_int8_t i_addr1[IEEE80211_ADDR_LEN]; |
343 | u_int8_t i_addr2[IEEE80211_ADDR_LEN]; |
344 | /* FCS */ |
345 | } __packed; |
346 | |
347 | struct ieee80211_frame_rts { |
348 | u_int8_t i_fc[2]; |
349 | u_int8_t i_dur[2]; |
350 | u_int8_t i_ra[IEEE80211_ADDR_LEN]; |
351 | u_int8_t i_ta[IEEE80211_ADDR_LEN]; |
352 | /* FCS */ |
353 | } __packed; |
354 | |
355 | struct ieee80211_frame_cts { |
356 | u_int8_t i_fc[2]; |
357 | u_int8_t i_dur[2]; |
358 | u_int8_t i_ra[IEEE80211_ADDR_LEN]; |
359 | /* FCS */ |
360 | } __packed; |
361 | |
362 | struct ieee80211_frame_ack { |
363 | u_int8_t i_fc[2]; |
364 | u_int8_t i_dur[2]; |
365 | u_int8_t i_ra[IEEE80211_ADDR_LEN]; |
366 | /* FCS */ |
367 | } __packed; |
368 | |
369 | struct ieee80211_frame_pspoll { |
370 | u_int8_t i_fc[2]; |
371 | u_int8_t i_aid[2]; |
372 | u_int8_t i_bssid[IEEE80211_ADDR_LEN]; |
373 | u_int8_t i_ta[IEEE80211_ADDR_LEN]; |
374 | /* FCS */ |
375 | } __packed; |
376 | |
377 | struct ieee80211_frame_cfend { /* NB: also CF-End+CF-Ack */ |
378 | u_int8_t i_fc[2]; |
379 | u_int8_t i_dur[2]; /* should be zero */ |
380 | u_int8_t i_ra[IEEE80211_ADDR_LEN]; |
381 | u_int8_t i_bssid[IEEE80211_ADDR_LEN]; |
382 | /* FCS */ |
383 | } __packed; |
384 | |
385 | static __inline int |
386 | ieee80211_has_seq(const struct ieee80211_frame *wh) |
387 | { |
388 | return (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != |
389 | IEEE80211_FC0_TYPE_CTL; |
390 | } |
391 | |
392 | static __inline int |
393 | ieee80211_has_addr4(const struct ieee80211_frame *wh) |
394 | { |
395 | return (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == |
396 | IEEE80211_FC1_DIR_DSTODS; |
397 | } |
398 | |
399 | static __inline int |
400 | ieee80211_has_qos(const struct ieee80211_frame *wh) |
401 | { |
402 | return (wh->i_fc[0] & |
403 | (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == |
404 | (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS); |
405 | } |
406 | |
407 | static __inline int |
408 | ieee80211_has_htc(const struct ieee80211_frame *wh) |
409 | { |
410 | return (wh->i_fc[1] & IEEE80211_FC1_ORDER) && |
411 | (ieee80211_has_qos(wh) || |
412 | (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
413 | IEEE80211_FC0_TYPE_MGT); |
414 | } |
415 | |
416 | static __inline u_int16_t |
417 | ieee80211_get_qos(const struct ieee80211_frame *wh) |
418 | { |
419 | const u_int8_t *frm; |
420 | |
421 | if (ieee80211_has_addr4(wh)) |
422 | frm = ((const struct ieee80211_qosframe_addr4 *)wh)->i_qos; |
423 | else |
424 | frm = ((const struct ieee80211_qosframe *)wh)->i_qos; |
425 | |
426 | return le16toh(*(const u_int16_t *)frm); |
427 | } |
428 | |
429 | /* |
430 | * BEACON management packets |
431 | * |
432 | * octet timestamp[8] |
433 | * octet beacon interval[2] |
434 | * octet capability information[2] |
435 | * information element |
436 | * octet elemid |
437 | * octet length |
438 | * octet information[length] |
439 | */ |
440 | |
441 | typedef u_int8_t *ieee80211_mgt_beacon_t; |
442 | |
443 | #define IEEE80211_BEACON_INTERVAL(beacon) \ |
444 | ((beacon)[8] | ((beacon)[9] << 8)) |
445 | #define IEEE80211_BEACON_CAPABILITY(beacon) \ |
446 | ((beacon)[10] | ((beacon)[11] << 8)) |
447 | |
448 | #define IEEE80211_CAPINFO_ESS 0x0001 |
449 | #define IEEE80211_CAPINFO_IBSS 0x0002 |
450 | #define IEEE80211_CAPINFO_CF_POLLABLE 0x0004 |
451 | #define IEEE80211_CAPINFO_CF_POLLREQ 0x0008 |
452 | #define IEEE80211_CAPINFO_PRIVACY 0x0010 |
453 | #define IEEE80211_CAPINFO_SHORT_PREAMBLE 0x0020 |
454 | #define IEEE80211_CAPINFO_PBCC 0x0040 |
455 | #define IEEE80211_CAPINFO_CHNL_AGILITY 0x0080 |
456 | /* bits 8-9 are reserved */ |
457 | #define IEEE80211_CAPINFO_SHORT_SLOTTIME 0x0400 |
458 | #define IEEE80211_CAPINFO_RSN 0x0800 |
459 | /* bit 12 is reserved */ |
460 | #define IEEE80211_CAPINFO_DSSSOFDM 0x2000 |
461 | /* bits 14-15 are reserved */ |
462 | |
463 | /* |
464 | * 802.11i/WPA information element (maximally sized). |
465 | */ |
466 | struct ieee80211_ie_wpa { |
467 | u_int8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */ |
468 | u_int8_t wpa_len; /* length in bytes */ |
469 | u_int8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */ |
470 | u_int8_t wpa_type; /* OUI type */ |
471 | u_int16_t wpa_version; /* spec revision */ |
472 | u_int32_t wpa_mcipher[1]; /* multicast/group key cipher */ |
473 | u_int16_t wpa_uciphercnt; /* # pairwise key ciphers */ |
474 | u_int32_t wpa_uciphers[8];/* ciphers */ |
475 | u_int16_t wpa_authselcnt; /* authentication selector cnt*/ |
476 | u_int32_t wpa_authsels[8];/* selectors */ |
477 | u_int16_t wpa_caps; /* 802.11i capabilities */ |
478 | u_int16_t wpa_pmkidcnt; /* 802.11i pmkid count */ |
479 | u_int16_t wpa_pmkids[8]; /* 802.11i pmkids */ |
480 | } __packed; |
481 | |
482 | /* |
483 | * Management information element payloads. |
484 | */ |
485 | |
486 | enum { |
487 | IEEE80211_ELEMID_SSID = 0, |
488 | IEEE80211_ELEMID_RATES = 1, |
489 | IEEE80211_ELEMID_FHPARMS = 2, |
490 | IEEE80211_ELEMID_DSPARMS = 3, |
491 | IEEE80211_ELEMID_CFPARMS = 4, |
492 | IEEE80211_ELEMID_TIM = 5, |
493 | IEEE80211_ELEMID_IBSSPARMS = 6, |
494 | IEEE80211_ELEMID_COUNTRY = 7, |
495 | IEEE80211_ELEMID_EDCAPARMS = 12, |
496 | IEEE80211_ELEMID_CHALLENGE = 16, |
497 | /* 17-31 reserved for challenge text extension */ |
498 | IEEE80211_ELEMID_PWRCNSTR = 32, |
499 | IEEE80211_ELEMID_PWRCAP = 33, |
500 | IEEE80211_ELEMID_TPCREQ = 34, |
501 | IEEE80211_ELEMID_TPCREP = 35, |
502 | IEEE80211_ELEMID_SUPPCHAN = 36, |
503 | IEEE80211_ELEMID_CHANSWITCHANN = 37, |
504 | IEEE80211_ELEMID_MEASREQ = 38, |
505 | IEEE80211_ELEMID_MEASREP = 39, |
506 | IEEE80211_ELEMID_QUIET = 40, |
507 | IEEE80211_ELEMID_IBSSDFS = 41, |
508 | IEEE80211_ELEMID_ERP = 42, |
509 | IEEE80211_ELEMID_HTCAP = 45, /* 11n */ |
510 | IEEE80211_ELEMID_QOS_CAP = 46, |
511 | IEEE80211_ELEMID_RSN = 48, |
512 | IEEE80211_ELEMID_XRATES = 50, |
513 | IEEE80211_ELEMID_TIE = 56, /* 11r */ |
514 | IEEE80211_ELEMID_HTINFO = 61, /* 11n */ |
515 | IEEE80211_ELEMID_MMIE = 76, /* 11w */ |
516 | IEEE80211_ELEMID_TPC = 150, |
517 | IEEE80211_ELEMID_CCKM = 156, |
518 | IEEE80211_ELEMID_VENDOR = 221 /* vendor private */ |
519 | }; |
520 | |
521 | struct ieee80211_tim_ie { |
522 | u_int8_t tim_ie; /* IEEE80211_ELEMID_TIM */ |
523 | u_int8_t tim_len; |
524 | u_int8_t tim_count; /* DTIM count */ |
525 | u_int8_t tim_period; /* DTIM period */ |
526 | u_int8_t tim_bitctl; /* bitmap control */ |
527 | u_int8_t tim_bitmap[1]; /* variable-length bitmap */ |
528 | } __packed; |
529 | |
530 | struct ieee80211_band { |
531 | u_int8_t schan; /* starting channel */ |
532 | u_int8_t nchan; /* number channels */ |
533 | u_int8_t maxtxpwr; /* tx power cap */ |
534 | } __packed; |
535 | |
536 | struct ieee80211_country_ie { |
537 | u_int8_t ie; /* IEEE80211_ELEMID_COUNTRY */ |
538 | u_int8_t len; |
539 | u_int8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */ |
540 | struct ieee80211_band band[4]; /* up to 4 sub bands */ |
541 | } __packed; |
542 | |
543 | #define IEEE80211_CHALLENGE_LEN 128 |
544 | |
545 | #define IEEE80211_RATE_BASIC 0x80 |
546 | #define IEEE80211_RATE_VAL 0x7f |
547 | |
548 | /* EPR information element flags */ |
549 | #define IEEE80211_ERP_NON_ERP_PRESENT 0x01 |
550 | #define IEEE80211_ERP_USE_PROTECTION 0x02 |
551 | #define IEEE80211_ERP_LONG_PREAMBLE 0x04 |
552 | |
553 | /* Atheros private advanced capabilities info */ |
554 | #define ATHEROS_CAP_TURBO_PRIME 0x01 |
555 | #define ATHEROS_CAP_COMPRESSION 0x02 |
556 | #define ATHEROS_CAP_FAST_FRAME 0x04 |
557 | /* bits 3-6 reserved */ |
558 | #define ATHEROS_CAP_BOOST 0x80 |
559 | |
560 | #define ATH_OUI 0x7f0300 /* Atheros OUI */ |
561 | #define ATH_OUI_TYPE 0x01 |
562 | #define ATH_OUI_VERSION 0x01 |
563 | |
564 | #define WPA_OUI 0xf25000 |
565 | #define WPA_OUI_TYPE 0x01 |
566 | #define WPA_VERSION 1 /* current supported version */ |
567 | |
568 | #define WPA_CSE_NULL 0x00 |
569 | #define WPA_CSE_WEP40 0x01 |
570 | #define WPA_CSE_TKIP 0x02 |
571 | #define WPA_CSE_CCMP 0x04 |
572 | #define WPA_CSE_WEP104 0x05 |
573 | |
574 | #define WPA_ASE_NONE 0x00 |
575 | #define WPA_ASE_8021X_UNSPEC 0x01 |
576 | #define WPA_ASE_8021X_PSK 0x02 |
577 | |
578 | #define RSN_OUI 0xac0f00 |
579 | #define RSN_VERSION 1 /* current supported version */ |
580 | |
581 | #define RSN_CSE_NULL 0x00 |
582 | #define RSN_CSE_WEP40 0x01 |
583 | #define RSN_CSE_TKIP 0x02 |
584 | #define RSN_CSE_WRAP 0x03 |
585 | #define RSN_CSE_CCMP 0x04 |
586 | #define RSN_CSE_WEP104 0x05 |
587 | |
588 | #define RSN_ASE_NONE 0x00 |
589 | #define RSN_ASE_8021X_UNSPEC 0x01 |
590 | #define RSN_ASE_8021X_PSK 0x02 |
591 | |
592 | #define RSN_CAP_PREAUTH 0x01 |
593 | |
594 | #define WME_OUI 0xf25000 |
595 | #define WME_OUI_TYPE 0x02 |
596 | #define WME_INFO_OUI_SUBTYPE 0x00 |
597 | #define WME_PARAM_OUI_SUBTYPE 0x01 |
598 | #define WME_VERSION 1 |
599 | |
600 | /* |
601 | * AUTH management packets |
602 | * |
603 | * octet algo[2] |
604 | * octet seq[2] |
605 | * octet status[2] |
606 | * octet chal.id |
607 | * octet chal.length |
608 | * octet chal.text[253] |
609 | */ |
610 | |
611 | typedef u_int8_t *ieee80211_mgt_auth_t; |
612 | |
613 | #define IEEE80211_AUTH_ALGORITHM(auth) \ |
614 | ((auth)[0] | ((auth)[1] << 8)) |
615 | #define IEEE80211_AUTH_TRANSACTION(auth) \ |
616 | ((auth)[2] | ((auth)[3] << 8)) |
617 | #define IEEE80211_AUTH_STATUS(auth) \ |
618 | ((auth)[4] | ((auth)[5] << 8)) |
619 | |
620 | #define IEEE80211_AUTH_ALG_OPEN 0x0000 |
621 | #define IEEE80211_AUTH_ALG_SHARED 0x0001 |
622 | #define IEEE80211_AUTH_ALG_LEAP 0x0080 |
623 | |
624 | enum { |
625 | IEEE80211_AUTH_OPEN_REQUEST = 1, |
626 | IEEE80211_AUTH_OPEN_RESPONSE = 2 |
627 | }; |
628 | |
629 | enum { |
630 | IEEE80211_AUTH_SHARED_REQUEST = 1, |
631 | IEEE80211_AUTH_SHARED_CHALLENGE = 2, |
632 | IEEE80211_AUTH_SHARED_RESPONSE = 3, |
633 | IEEE80211_AUTH_SHARED_PASS = 4 |
634 | }; |
635 | |
636 | /* |
637 | * Reason codes |
638 | * |
639 | * Unlisted codes are reserved |
640 | */ |
641 | |
642 | enum { |
643 | IEEE80211_REASON_UNSPECIFIED = 1, |
644 | IEEE80211_REASON_AUTH_EXPIRE = 2, |
645 | IEEE80211_REASON_AUTH_LEAVE = 3, |
646 | IEEE80211_REASON_ASSOC_EXPIRE = 4, |
647 | IEEE80211_REASON_ASSOC_TOOMANY = 5, |
648 | IEEE80211_REASON_NOT_AUTHED = 6, |
649 | IEEE80211_REASON_NOT_ASSOCED = 7, |
650 | IEEE80211_REASON_ASSOC_LEAVE = 8, |
651 | IEEE80211_REASON_ASSOC_NOT_AUTHED = 9, |
652 | |
653 | IEEE80211_REASON_RSN_REQUIRED = 11, |
654 | IEEE80211_REASON_RSN_INCONSISTENT = 12, |
655 | IEEE80211_REASON_IE_INVALID = 13, |
656 | IEEE80211_REASON_MIC_FAILURE = 14, |
657 | |
658 | IEEE80211_STATUS_SUCCESS = 0, |
659 | IEEE80211_STATUS_UNSPECIFIED = 1, |
660 | IEEE80211_STATUS_CAPINFO = 10, |
661 | IEEE80211_STATUS_NOT_ASSOCED = 11, |
662 | IEEE80211_STATUS_OTHER = 12, |
663 | IEEE80211_STATUS_ALG = 13, |
664 | IEEE80211_STATUS_SEQUENCE = 14, |
665 | IEEE80211_STATUS_CHALLENGE = 15, |
666 | IEEE80211_STATUS_TIMEOUT = 16, |
667 | IEEE80211_STATUS_TOOMANY = 17, |
668 | IEEE80211_STATUS_BASIC_RATE = 18, |
669 | IEEE80211_STATUS_SP_REQUIRED = 19, |
670 | IEEE80211_STATUS_PBCC_REQUIRED = 20, |
671 | IEEE80211_STATUS_CA_REQUIRED = 21, |
672 | IEEE80211_STATUS_TOO_MANY_STATIONS = 22, |
673 | IEEE80211_STATUS_RATES = 23, |
674 | IEEE80211_STATUS_SHORTSLOT_REQUIRED = 25, |
675 | IEEE80211_STATUS_DSSSOFDM_REQUIRED = 26 |
676 | }; |
677 | |
678 | #define IEEE80211_WEP_KEYLEN 5 /* 40bit */ |
679 | #define IEEE80211_WEP_IVLEN 3 /* 24bit */ |
680 | #define IEEE80211_WEP_KIDLEN 1 /* 1 octet */ |
681 | #define IEEE80211_WEP_CRCLEN 4 /* CRC-32 */ |
682 | #define IEEE80211_WEP_TOTLEN (IEEE80211_WEP_IVLEN + \ |
683 | IEEE80211_WEP_KIDLEN + \ |
684 | IEEE80211_WEP_CRCLEN) |
685 | #define IEEE80211_WEP_NKID 4 /* number of key ids */ |
686 | |
687 | /* |
688 | * 802.11i defines an extended IV for use with non-WEP ciphers. |
689 | * When the EXTIV bit is set in the key id byte an additional |
690 | * 4 bytes immediately follow the IV for TKIP. For CCMP the |
691 | * EXTIV bit is likewise set but the 8 bytes represent the |
692 | * CCMP header rather than IV+extended-IV. |
693 | */ |
694 | #define IEEE80211_WEP_EXTIV 0x20 |
695 | #define IEEE80211_WEP_EXTIVLEN 4 /* extended IV length */ |
696 | #define IEEE80211_WEP_MICLEN 8 /* trailing MIC */ |
697 | |
698 | #define IEEE80211_CRC_LEN 4 |
699 | |
700 | /* |
701 | * Maximum acceptable MTU is: |
702 | * IEEE80211_MAX_LEN - WEP overhead - CRC - |
703 | * QoS overhead - RSN/WPA overhead |
704 | * Min is arbitrarily chosen > IEEE80211_MIN_LEN. The default |
705 | * mtu is Ethernet-compatible; it's set by ether_ifattach. |
706 | */ |
707 | #define IEEE80211_MTU_MAX 2290 |
708 | #define IEEE80211_MTU_MIN 32 |
709 | |
710 | #define IEEE80211_MAX_LEN (2300 + IEEE80211_CRC_LEN + \ |
711 | (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN)) |
712 | #define IEEE80211_ACK_LEN \ |
713 | (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN) |
714 | #define IEEE80211_MIN_LEN \ |
715 | (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN) |
716 | |
717 | /* |
718 | * The 802.11 spec says at most 2007 stations may be |
719 | * associated at once. For most AP's this is way more |
720 | * than is feasible so we use a default of 128. This |
721 | * number may be overridden by the driver and/or by |
722 | * user configuration. |
723 | */ |
724 | #define IEEE80211_AID_MAX 2007 |
725 | #define IEEE80211_AID_DEF 128 |
726 | |
727 | #define IEEE80211_AID(b) ((b) &~ 0xc000) |
728 | |
729 | /* |
730 | * RTS frame length parameters. The default is specified in |
731 | * the 802.11 spec as 512; we treat it as implementation-dependent |
732 | * so it's defined in ieee80211_var.h. The max may be wrong |
733 | * for jumbo frames. |
734 | */ |
735 | #define IEEE80211_RTS_MIN 1 |
736 | #define IEEE80211_RTS_MAX 2346 |
737 | |
738 | /* |
739 | * TX fragmentation parameters. As above for RTS, we treat |
740 | * default as implementation-dependent so define it elsewhere. |
741 | */ |
742 | #define IEEE80211_FRAG_MIN 256 |
743 | #define IEEE80211_FRAG_MAX 2346 |
744 | |
745 | /* |
746 | * 802.11 frame duration definitions. |
747 | */ |
748 | |
749 | struct ieee80211_duration { |
750 | uint16_t d_rts_dur; |
751 | uint16_t d_data_dur; |
752 | uint16_t d_plcp_len; |
753 | uint8_t d_residue; /* unused octets in time slot */ |
754 | }; |
755 | |
756 | /* One Time Unit (TU) is 1Kus = 1024 microseconds. */ |
757 | #define IEEE80211_DUR_TU 1024 |
758 | |
759 | /* IEEE 802.11b durations for DSSS PHY in microseconds */ |
760 | #define IEEE80211_DUR_DS_LONG_PREAMBLE 144 |
761 | #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 |
762 | |
763 | #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 |
764 | #define IEEE80211_DUR_DS_FAST_PLCPHDR 24 |
765 | #define IEEE80211_DUR_DS_SLOW_ACK 112 |
766 | #define IEEE80211_DUR_DS_FAST_ACK 56 |
767 | #define IEEE80211_DUR_DS_SLOW_CTS 112 |
768 | #define IEEE80211_DUR_DS_FAST_CTS 56 |
769 | |
770 | #define IEEE80211_DUR_DS_SLOT 20 |
771 | #define IEEE80211_DUR_DS_SIFS 10 |
772 | #define IEEE80211_DUR_DS_PIFS (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT) |
773 | #define IEEE80211_DUR_DS_DIFS (IEEE80211_DUR_DS_SIFS + \ |
774 | 2 * IEEE80211_DUR_DS_SLOT) |
775 | #define IEEE80211_DUR_DS_EIFS (IEEE80211_DUR_DS_SIFS + \ |
776 | IEEE80211_DUR_DS_SLOW_ACK + \ |
777 | IEEE80211_DUR_DS_LONG_PREAMBLE + \ |
778 | IEEE80211_DUR_DS_SLOW_PLCPHDR + \ |
779 | IEEE80211_DUR_DS_DIFS) |
780 | |
781 | |
782 | #endif /* !_NET80211_IEEE80211_H_ */ |
783 | |