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
ieee80211_has_seq(const struct ieee80211_frame * wh)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
ieee80211_has_addr4(const struct ieee80211_frame * wh)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
ieee80211_has_qos(const struct ieee80211_frame * wh)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
ieee80211_has_htc(const struct ieee80211_frame * wh)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
ieee80211_get_qos(const struct ieee80211_frame * wh)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