xref: /dragonfly/sys/netproto/802_11/ieee80211.h (revision 1bf4b486)
1 /*
2  * Copyright (c) 2001 Atsushi Onoe
3  * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * Alternatively, this software may be distributed under the terms of the
18  * GNU General Public License ("GPL") version 2 as published by the Free
19  * Software Foundation.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  * $FreeBSD: src/sys/net80211/ieee80211.h,v 1.5 2004/04/05 17:47:40 sam Exp $
33  * $DragonFly: src/sys/netproto/802_11/ieee80211.h,v 1.1 2004/07/26 16:30:17 joerg Exp $
34  */
35 
36 #ifndef _NETPROTO_802_11_IEEE80211_H_
37 #define	_NETPROTO_802_11_IEEE80211_H_
38 
39 /*
40  * 802.11 protocol definitions.
41  */
42 
43 #define	IEEE80211_ADDR_LEN	6		/* size of 802.11 address */
44 /* is 802.11 address multicast/broadcast? */
45 #define	IEEE80211_IS_MULTICAST(a)	ETHER_IS_MULTICAST(a)
46 
47 /* IEEE 802.11 PLCP header */
48 struct ieee80211_plcp_hdr {
49 	uint16_t	i_sfd;
50 	uint8_t		i_signal;
51 	uint8_t		i_service;
52 	uint16_t	i_length;
53 	uint16_t	i_crc;
54 } __attribute__((__packed__));
55 
56 #define	IEEE80211_PLCP_SFD      0xF3A0
57 #define	IEEE80211_PLCP_SERVICE  0x00
58 
59 /*
60  * generic definitions for IEEE 802.11 frames
61  */
62 struct ieee80211_frame {
63 	uint8_t		i_fc[2];
64 	uint8_t		i_dur[2];
65 	uint8_t		i_addr1[IEEE80211_ADDR_LEN];
66 	uint8_t		i_addr2[IEEE80211_ADDR_LEN];
67 	uint8_t		i_addr3[IEEE80211_ADDR_LEN];
68 	uint8_t		i_seq[2];
69 	/* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
70 	/* see below */
71 } __attribute__((__packed__));
72 
73 struct ieee80211_qosframe {
74 	uint8_t		i_fc[2];
75 	uint8_t		i_dur[2];
76 	uint8_t		i_addr1[IEEE80211_ADDR_LEN];
77 	uint8_t		i_addr2[IEEE80211_ADDR_LEN];
78 	uint8_t		i_addr3[IEEE80211_ADDR_LEN];
79 	uint8_t		i_seq[2];
80 	uint8_t		i_qos[2];
81 	/* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
82 	/* see below */
83 } __attribute__((__packed__));
84 
85 struct ieee80211_qoscntl {
86 	uint8_t		i_qos[2];
87 };
88 
89 struct ieee80211_frame_addr4 {
90 	uint8_t		i_fc[2];
91 	uint8_t		i_dur[2];
92 	uint8_t		i_addr1[IEEE80211_ADDR_LEN];
93 	uint8_t		i_addr2[IEEE80211_ADDR_LEN];
94 	uint8_t		i_addr3[IEEE80211_ADDR_LEN];
95 	uint8_t		i_seq[2];
96 	uint8_t		i_addr4[IEEE80211_ADDR_LEN];
97 } __attribute__((__packed__));
98 
99 
100 struct ieee80211_qosframe_addr4 {
101 	uint8_t		i_fc[2];
102 	uint8_t		i_dur[2];
103 	uint8_t		i_addr1[IEEE80211_ADDR_LEN];
104 	uint8_t		i_addr2[IEEE80211_ADDR_LEN];
105 	uint8_t		i_addr3[IEEE80211_ADDR_LEN];
106 	uint8_t		i_seq[2];
107 	uint8_t		i_addr4[IEEE80211_ADDR_LEN];
108 	uint8_t		i_qos[2];
109 } __attribute__((__packed__));
110 
111 /*
112  * Management Notification Frame
113  */
114 struct ieee80211_mnf {
115 	uint8_t		mnf_category;
116 	uint8_t		mnf_action;
117 	uint8_t		mnf_dialog;
118 	uint8_t		mnf_status;
119 } __attribute__((__packed__));
120 #define	MNF_SETUP_REQ	0
121 #define	MNF_SETUP_RESP	1
122 #define	MNF_TEARDOWN	2
123 
124 /*
125  * WME/802.11e Tspec Element
126  */
127 struct ieee80211_wme_tspec {
128 	uint8_t		ts_id;
129 	uint8_t		ts_len;
130 	uint8_t		ts_oui[3];
131 	uint8_t		ts_oui_type;
132 	uint8_t		ts_oui_subtype;
133 	uint8_t		ts_version;
134 	uint8_t		ts_tsinfo[3];
135 	uint8_t		ts_nom_msdu[2];
136 	uint8_t		ts_max_msdu[2];
137 	uint8_t		ts_min_svc[4];
138 	uint8_t		ts_max_svc[4];
139 	uint8_t		ts_inactv_intv[4];
140 	uint8_t		ts_susp_intv[4];
141 	uint8_t		ts_start_svc[4];
142 	uint8_t		ts_min_rate[4];
143 	uint8_t		ts_mean_rate[4];
144 	uint8_t		ts_max_burst[4];
145 	uint8_t		ts_min_phy[4];
146 	uint8_t		ts_peak_rate[4];
147 	uint8_t		ts_delay[4];
148 	uint8_t		ts_surplus[2];
149 	uint8_t		ts_medium_time[2];
150 } __attribute__((__packed__));
151 
152 #define	IEEE80211_FC0_VERSION_MASK		0x03
153 #define	IEEE80211_FC0_VERSION_SHIFT		0
154 #define	IEEE80211_FC0_VERSION_0			0x00
155 #define	IEEE80211_FC0_TYPE_MASK			0x0c
156 #define	IEEE80211_FC0_TYPE_SHIFT		2
157 #define	IEEE80211_FC0_TYPE_MGT			0x00
158 #define	IEEE80211_FC0_TYPE_CTL			0x04
159 #define	IEEE80211_FC0_TYPE_DATA			0x08
160 
161 #define	IEEE80211_FC0_SUBTYPE_MASK		0xf0
162 #define	IEEE80211_FC0_SUBTYPE_SHIFT		4
163 /* for TYPE_MGT */
164 #define	IEEE80211_FC0_SUBTYPE_ASSOC_REQ		0x00
165 #define	IEEE80211_FC0_SUBTYPE_ASSOC_RESP	0x10
166 #define	IEEE80211_FC0_SUBTYPE_REASSOC_REQ	0x20
167 #define	IEEE80211_FC0_SUBTYPE_REASSOC_RESP	0x30
168 #define	IEEE80211_FC0_SUBTYPE_PROBE_REQ		0x40
169 #define	IEEE80211_FC0_SUBTYPE_PROBE_RESP	0x50
170 #define	IEEE80211_FC0_SUBTYPE_BEACON		0x80
171 #define	IEEE80211_FC0_SUBTYPE_ATIM		0x90
172 #define	IEEE80211_FC0_SUBTYPE_DISASSOC		0xa0
173 #define	IEEE80211_FC0_SUBTYPE_AUTH		0xb0
174 #define	IEEE80211_FC0_SUBTYPE_DEAUTH		0xc0
175 /* for TYPE_CTL */
176 #define	IEEE80211_FC0_SUBTYPE_PS_POLL		0xa0
177 #define	IEEE80211_FC0_SUBTYPE_RTS		0xb0
178 #define	IEEE80211_FC0_SUBTYPE_CTS		0xc0
179 #define	IEEE80211_FC0_SUBTYPE_ACK		0xd0
180 #define	IEEE80211_FC0_SUBTYPE_CF_END		0xe0
181 #define	IEEE80211_FC0_SUBTYPE_CF_END_ACK	0xf0
182 /* for TYPE_DATA (bit combination) */
183 #define	IEEE80211_FC0_SUBTYPE_DATA		0x00
184 #define	IEEE80211_FC0_SUBTYPE_CF_ACK		0x10
185 #define	IEEE80211_FC0_SUBTYPE_CF_POLL		0x20
186 #define	IEEE80211_FC0_SUBTYPE_CF_ACPL		0x30
187 #define	IEEE80211_FC0_SUBTYPE_NODATA		0x40
188 #define	IEEE80211_FC0_SUBTYPE_CFACK		0x50
189 #define	IEEE80211_FC0_SUBTYPE_CFPOLL		0x60
190 #define	IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK	0x70
191 #define	IEEE80211_FC0_SUBTYPE_QOS		0x80
192 
193 #define	IEEE80211_FC1_DIR_MASK			0x03
194 #define	IEEE80211_FC1_DIR_NODS			0x00	/* STA->STA */
195 #define	IEEE80211_FC1_DIR_TODS			0x01	/* STA->AP  */
196 #define	IEEE80211_FC1_DIR_FROMDS		0x02	/* AP ->STA */
197 #define	IEEE80211_FC1_DIR_DSTODS		0x03	/* AP ->AP  */
198 
199 #define	IEEE80211_FC1_MORE_FRAG			0x04
200 #define	IEEE80211_FC1_RETRY			0x08
201 #define	IEEE80211_FC1_PWR_MGT			0x10
202 #define	IEEE80211_FC1_MORE_DATA			0x20
203 #define	IEEE80211_FC1_WEP			0x40
204 #define	IEEE80211_FC1_ORDER			0x80
205 
206 #define	IEEE80211_SEQ_FRAG_MASK			0x000f
207 #define	IEEE80211_SEQ_FRAG_SHIFT		0
208 #define	IEEE80211_SEQ_SEQ_MASK			0xfff0
209 #define	IEEE80211_SEQ_SEQ_SHIFT			4
210 
211 #define	IEEE80211_NWID_LEN			32
212 
213 #define	IEEE80211_QOS_TXOP			0x00ff
214 /* bit 8 is reserved */
215 #define	IEEE80211_QOS_ACKPOLICY			0x0600
216 #define	IEEE80211_QOS_ESOP			0x0800
217 #define	IEEE80211_QOS_TID			0xf000
218 
219 /*
220  * Control frames.
221  */
222 struct ieee80211_frame_min {
223 	uint8_t		i_fc[2];
224 	uint8_t		i_dur[2];
225 	uint8_t		i_addr1[IEEE80211_ADDR_LEN];
226 	uint8_t		i_addr2[IEEE80211_ADDR_LEN];
227 	/* FCS */
228 } __attribute__((__packed__));
229 
230 struct ieee80211_frame_rts {
231 	uint8_t		i_fc[2];
232 	uint8_t		i_dur[2];
233 	uint8_t		i_ra[IEEE80211_ADDR_LEN];
234 	uint8_t		i_ta[IEEE80211_ADDR_LEN];
235 	/* FCS */
236 } __attribute__((__packed__));
237 
238 struct ieee80211_frame_cts {
239 	uint8_t		i_fc[2];
240 	uint8_t		i_dur[2];
241 	uint8_t		i_ra[IEEE80211_ADDR_LEN];
242 	/* FCS */
243 } __attribute__((__packed__));
244 
245 struct ieee80211_frame_ack {
246 	uint8_t		i_fc[2];
247 	uint8_t		i_dur[2];
248 	uint8_t		i_ra[IEEE80211_ADDR_LEN];
249 	/* FCS */
250 } __attribute__((__packed__));
251 
252 struct ieee80211_frame_pspoll {
253 	uint8_t		i_fc[2];
254 	uint8_t		i_aid[2];
255 	uint8_t		i_bssid[IEEE80211_ADDR_LEN];
256 	uint8_t		i_ta[IEEE80211_ADDR_LEN];
257 	/* FCS */
258 } __attribute__((__packed__));
259 
260 struct ieee80211_frame_cfend {		/* NB: also CF-End+CF-Ack */
261 	uint8_t		i_fc[2];
262 	uint8_t		i_dur[2];	/* should be zero */
263 	uint8_t		i_ra[IEEE80211_ADDR_LEN];
264 	uint8_t		i_bssid[IEEE80211_ADDR_LEN];
265 	/* FCS */
266 } __attribute__((__packed__));
267 
268 /*
269  * BEACON management packets
270  *
271  *	octet timestamp[8]
272  *	octet beacon interval[2]
273  *	octet capability information[2]
274  *	information element
275  *		octet elemid
276  *		octet length
277  *		octet information[length]
278  */
279 
280 typedef uint8_t *ieee80211_mgt_beacon_t;
281 
282 #define	IEEE80211_BEACON_INTERVAL(beacon) \
283 	((beacon)[8] | ((beacon)[9] << 8))
284 #define	IEEE80211_BEACON_CAPABILITY(beacon) \
285 	((beacon)[10] | ((beacon)[11] << 8))
286 
287 #define	IEEE80211_CAPINFO_ESS			0x0001
288 #define	IEEE80211_CAPINFO_IBSS			0x0002
289 #define	IEEE80211_CAPINFO_CF_POLLABLE		0x0004
290 #define	IEEE80211_CAPINFO_CF_POLLREQ		0x0008
291 #define	IEEE80211_CAPINFO_PRIVACY		0x0010
292 #define	IEEE80211_CAPINFO_SHORT_PREAMBLE	0x0020
293 #define	IEEE80211_CAPINFO_PBCC			0x0040
294 #define	IEEE80211_CAPINFO_CHNL_AGILITY		0x0080
295 /* bits 8-9 are reserved */
296 #define	IEEE80211_CAPINFO_SHORT_SLOTTIME	0x0400
297 #define	IEEE80211_CAPINFO_RSN			0x0800
298 /* bit 12 is reserved */
299 #define	IEEE80211_CAPINFO_DSSSOFDM		0x2000
300 /* bits 14-15 are reserved */
301 
302 /*
303  * 802.11i/WPA information element (maximally sized).
304  */
305 struct ieee80211_ie_wpa {
306 	uint8_t		wpa_oui[3];	/* 0x00, 0x50, 0xf2 */
307 	uint8_t		wpa_type;	/* OUI type */
308 	uint16_t	wpa_version;	/* spec revision */
309 	uint32_t	wpa_mcipher[1];	/* multicast/group key cipher */
310 	uint16_t	wpa_uciphercnt;	/* # pairwise key ciphers */
311 	uint32_t	wpa_uciphers[8];/* ciphers */
312 	uint16_t	wpa_authselcnt;	/* authentication selector cnt*/
313 	uint32_t	wpa_authsels[8];/* selectors */
314 } __attribute__((__packed__));
315 
316 /*
317  * Management information elements
318  */
319 struct ieee80211_information {
320 	char	ssid[IEEE80211_NWID_LEN+1];
321 	struct rates {
322 		uint8_t	*p;
323 	} rates;
324 	struct fh {
325 		uint16_t	dwell;
326 		uint8_t	set;
327 		uint8_t	pattern;
328 		uint8_t	index;
329 	} fh;
330 	struct ds {
331 		uint8_t	channel;
332 	} ds;
333 	struct cf {
334 		uint8_t	count;
335 		uint8_t	period;
336 		uint8_t	maxdur[2];
337 		uint8_t	dur[2];
338 	} cf;
339 	struct tim {
340 		uint8_t	count;
341 		uint8_t	period;
342 		uint8_t	bitctl;
343 		/* uint8_t	pvt[251]; The driver needs to use this. */
344 	} tim;
345 	struct ibss {
346 		uint16_t	atim;
347 	} ibss;
348 	struct challenge {
349 		uint8_t	*p;
350 		uint8_t	len;
351 	} challenge;
352 	struct erp {
353 		uint8_t	flags;
354 	} erp;
355 	struct country {
356 		uint8_t	cc[3];		/* ISO CC+(I)ndoor/(O)utdoor */
357 		struct {
358 			uint8_t	schan;		/* starting channel */
359 			uint8_t	nchan;		/* number channels */
360 			uint8_t	maxtxpwr;
361 		} band[4];			/* up to 4 sub bands */
362 	} country;
363 	struct ath {
364 		uint8_t	flags;
365 	} ath;
366 	struct ieee80211_ie_wpa	wpa;
367 };
368 
369 enum {
370 	IEEE80211_ELEMID_SSID			= 0,
371 	IEEE80211_ELEMID_RATES			= 1,
372 	IEEE80211_ELEMID_FHPARMS		= 2,
373 	IEEE80211_ELEMID_DSPARMS		= 3,
374 	IEEE80211_ELEMID_CFPARMS		= 4,
375 	IEEE80211_ELEMID_TIM			= 5,
376 	IEEE80211_ELEMID_IBSSPARMS		= 6,
377 	IEEE80211_ELEMID_COUNTRY		= 7,
378 	IEEE80211_ELEMID_CHALLENGE		= 16,
379 	/* 17-31 reserved for challenge text extension */
380 	IEEE80211_ELEMID_ERP			= 42,
381 	IEEE80211_ELEMID_XRATES			= 50,
382 	IEEE80211_ELEMID_TPC			= 150,
383 	IEEE80211_ELEMID_CCKM			= 156,
384 	IEEE80211_ELEMID_VENDOR			= 221,	/* vendor private */
385 };
386 
387 #define	IEEE80211_CHALLENGE_LEN			128
388 
389 #define	IEEE80211_RATE_BASIC			0x80
390 #define	IEEE80211_RATE_VAL			0x7f
391 
392 /* EPR information element flags */
393 #define	IEEE80211_ERP_NON_ERP_PRESENT		0x01
394 #define	IEEE80211_ERP_USE_PROTECTION		0x02
395 #define	IEEE80211_ERP_BARKER_MODE		0x04
396 
397 /* Atheros private advanced capabilities info */
398 #define	ATHEROS_CAP_TURBO_PRIME			0x01
399 #define	ATHEROS_CAP_COMPRESSION			0x02
400 #define	ATHEROS_CAP_FAST_FRAME			0x04
401 /* bits 3-6 reserved */
402 #define	ATHEROS_CAP_BOOST			0x80
403 
404 #define	ATH_OUI			0x7f0300		/* Atheros OUI */
405 #define	ATH_OUI_TYPE		0x01
406 #define	ATH_OUI_VERSION		0x01
407 
408 #define	WPA_OUI			0xf25000
409 #define	WPA_OUI_TYPE		0x01
410 #define	WPA_OUI_VERSION		1		/* current supported version */
411 
412 #define	WPA_CSE_NULL		0x00
413 #define	WPA_CSE_WEP40		0x01
414 #define	WPA_CSE_TKIP		0x02
415 #define	WPA_CSE_WRAP		0x03		/* WPA2/802.11i */
416 #define	WPA_CSE_CCMP		0x04
417 #define	WPA_CSE_WEP104		0x05
418 
419 #define	WPA_ASE_NONE		0x00
420 #define	WPA_ASE_8021X_UNSPEC	0x01
421 #define	WPA_ASE_8021X_PSK	0x02
422 
423 /*
424  * AUTH management packets
425  *
426  *	octet algo[2]
427  *	octet seq[2]
428  *	octet status[2]
429  *	octet chal.id
430  *	octet chal.length
431  *	octet chal.text[253]
432  */
433 
434 typedef uint8_t *ieee80211_mgt_auth_t;
435 
436 #define	IEEE80211_AUTH_ALGORITHM(auth) \
437 	((auth)[0] | ((auth)[1] << 8))
438 #define	IEEE80211_AUTH_TRANSACTION(auth) \
439 	((auth)[2] | ((auth)[3] << 8))
440 #define	IEEE80211_AUTH_STATUS(auth) \
441 	((auth)[4] | ((auth)[5] << 8))
442 
443 #define	IEEE80211_AUTH_ALG_OPEN			0x0000
444 #define	IEEE80211_AUTH_ALG_SHARED		0x0001
445 #define	IEEE80211_AUTH_ALG_LEAP			0x0080
446 
447 enum {
448 	IEEE80211_AUTH_OPEN_REQUEST		= 1,
449 	IEEE80211_AUTH_OPEN_RESPONSE		= 2,
450 };
451 
452 enum {
453 	IEEE80211_AUTH_SHARED_REQUEST		= 1,
454 	IEEE80211_AUTH_SHARED_CHALLENGE		= 2,
455 	IEEE80211_AUTH_SHARED_RESPONSE		= 3,
456 	IEEE80211_AUTH_SHARED_PASS		= 4,
457 };
458 
459 /*
460  * Reason codes
461  *
462  * Unlisted codes are reserved
463  */
464 
465 enum {
466 	IEEE80211_REASON_UNSPECIFIED		= 1,
467 	IEEE80211_REASON_AUTH_EXPIRE		= 2,
468 	IEEE80211_REASON_AUTH_LEAVE		= 3,
469 	IEEE80211_REASON_ASSOC_EXPIRE		= 4,
470 	IEEE80211_REASON_ASSOC_TOOMANY		= 5,
471 	IEEE80211_REASON_NOT_AUTHED		= 6,
472 	IEEE80211_REASON_NOT_ASSOCED		= 7,
473 	IEEE80211_REASON_ASSOC_LEAVE		= 8,
474 	IEEE80211_REASON_ASSOC_NOT_AUTHED	= 9,
475 
476 	IEEE80211_REASON_RSN_REQUIRED		= 11,
477 	IEEE80211_REASON_RSN_INCONSISTENT	= 12,
478 	IEEE80211_REASON_IE_INVALID		= 13,
479 	IEEE80211_REASON_MIC_FAILURE		= 14,
480 
481 	IEEE80211_STATUS_SUCCESS		= 0,
482 	IEEE80211_STATUS_UNSPECIFIED		= 1,
483 	IEEE80211_STATUS_CAPINFO		= 10,
484 	IEEE80211_STATUS_NOT_ASSOCED		= 11,
485 	IEEE80211_STATUS_OTHER			= 12,
486 	IEEE80211_STATUS_ALG			= 13,
487 	IEEE80211_STATUS_SEQUENCE		= 14,
488 	IEEE80211_STATUS_CHALLENGE		= 15,
489 	IEEE80211_STATUS_TIMEOUT		= 16,
490 	IEEE80211_STATUS_TOOMANY		= 17,
491 	IEEE80211_STATUS_BASIC_RATE		= 18,
492 	IEEE80211_STATUS_SP_REQUIRED		= 19,
493 	IEEE80211_STATUS_PBCC_REQUIRED		= 20,
494 	IEEE80211_STATUS_CA_REQUIRED		= 21,
495 	IEEE80211_STATUS_TOO_MANY_STATIONS	= 22,
496 	IEEE80211_STATUS_RATES			= 23,
497 	IEEE80211_STATUS_SHORTSLOT_REQUIRED	= 25,
498 	IEEE80211_STATUS_DSSSOFDM_REQUIRED	= 26,
499 };
500 
501 #define	IEEE80211_WEP_KEYLEN			5	/* 40bit */
502 #define	IEEE80211_WEP_IVLEN			3	/* 24bit */
503 #define	IEEE80211_WEP_KIDLEN			1	/* 1 octet */
504 #define	IEEE80211_WEP_CRCLEN			4	/* CRC-32 */
505 #define	IEEE80211_WEP_NKID			4	/* number of key ids */
506 
507 #define	IEEE80211_CRC_LEN			4
508 
509 /*
510  * Maximum acceptable MTU is:
511  *	IEEE80211_MAX_LEN - WEP overhead - CRC -
512  *		QoS overhead - RSN/WPA overhead
513  * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
514  * mtu is Ethernet-compatible; it's set by ether_ifattach.
515  */
516 #define	IEEE80211_MTU_MAX			2290
517 #define	IEEE80211_MTU_MIN			32
518 
519 #define	IEEE80211_MAX_LEN			(2300 + IEEE80211_CRC_LEN + \
520     (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
521 #define	IEEE80211_MIN_LEN \
522 	(sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)
523 
524 /*
525  * RTS frame length parameters.  The default is specified in
526  * the 802.11 spec.  The max may be wrong for jumbo frames.
527  */
528 #define	IEEE80211_RTS_DEFAULT			512
529 #define	IEEE80211_RTS_MIN			1
530 #define	IEEE80211_RTS_MAX			IEEE80211_MAX_LEN
531 
532 enum {
533 	IEEE80211_AUTH_NONE	= 0,
534 	IEEE80211_AUTH_OPEN	= 1,
535 	IEEE80211_AUTH_SHARED	= 2,
536 };
537 
538 #endif /* _NETPROTO_802_11_IEEE80211_H_ */
539