1/*
2 * Copyright (c) 1982, 1986, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#) $Id: arcnet.h,v 1.3 2003-01-23 09:05:37 guy Exp $ (LBL)
34 *
35 * from: NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp
36 */
37
38/*
39 * Structure of a 2.5MB/s Arcnet header on the BSDs,
40 * as given to interface code.
41 */
42struct	arc_header {
43	u_int8_t  arc_shost;
44	u_int8_t  arc_dhost;
45	u_int8_t  arc_type;
46	/*
47	 * only present for newstyle encoding with LL fragmentation.
48	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
49	 */
50	u_int8_t  arc_flag;
51	u_int16_t arc_seqid;
52
53	/*
54	 * only present in exception packets (arc_flag == 0xff)
55	 */
56	u_int8_t  arc_type2;	/* same as arc_type */
57	u_int8_t  arc_flag2;	/* real flag value */
58	u_int16_t arc_seqid2;	/* real seqid value */
59};
60
61#define	ARC_HDRLEN		3
62#define	ARC_HDRNEWLEN		6
63#define	ARC_HDRNEWLEN_EXC	10
64
65/* RFC 1051 */
66#define	ARCTYPE_IP_OLD		240	/* IP protocol */
67#define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
68
69/* RFC 1201 */
70#define	ARCTYPE_IP		212	/* IP protocol */
71#define	ARCTYPE_ARP		213	/* address resolution protocol */
72#define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
73
74#define	ARCTYPE_ATALK		221	/* Appletalk */
75#define	ARCTYPE_BANIAN		247	/* Banyan Vines */
76#define	ARCTYPE_IPX		250	/* Novell IPX */
77
78#define ARCTYPE_INET6		0xc4	/* IPng */
79#define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
80
81/*
82 * Structure of a 2.5MB/s Arcnet header on Linux.  Linux has
83 * an extra "offset" field when given to interface code, and
84 * never presents packets that look like exception frames.
85 */
86struct	arc_linux_header {
87	u_int8_t  arc_shost;
88	u_int8_t  arc_dhost;
89	u_int16_t arc_offset;
90	u_int8_t  arc_type;
91	/*
92	 * only present for newstyle encoding with LL fragmentation.
93	 * Don't use sizeof(anything), use ARC_LINUX_HDR{,NEW}LEN
94	 * instead.
95	 */
96	u_int8_t  arc_flag;
97	u_int16_t arc_seqid;
98};
99
100#define	ARC_LINUX_HDRLEN	5
101#define	ARC_LINUX_HDRNEWLEN	8
102