1/*	$NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $	*/
2/* $FreeBSD$ */
3
4/*-
5 * Copyright (c) 1982, 1986, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
33 *       @(#)if_ether.h	8.1 (Berkeley) 6/10/93
34 */
35
36#ifndef _NET_IF_ARC_H_
37#define _NET_IF_ARC_H_
38
39/*
40 * Arcnet address - 1 octets
41 * don't know who uses this.
42 */
43struct arc_addr {
44	u_int8_t  arc_addr_octet[1];
45} __packed;
46
47/*
48 * Structure of a 2.5MB/s Arcnet header.
49 * as given to interface code.
50 */
51struct	arc_header {
52	u_int8_t  arc_shost;
53	u_int8_t  arc_dhost;
54	u_int8_t  arc_type;
55	/*
56	 * only present for newstyle encoding with LL fragmentation.
57	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
58	 */
59	u_int8_t  arc_flag;
60	u_int16_t arc_seqid;
61
62	/*
63	 * only present in exception packets (arc_flag == 0xff)
64	 */
65	u_int8_t  arc_type2;	/* same as arc_type */
66	u_int8_t  arc_flag2;	/* real flag value */
67	u_int16_t arc_seqid2;	/* real seqid value */
68} __packed;
69
70#define	ARC_ADDR_LEN		1
71
72#define	ARC_HDRLEN		3
73#define	ARC_HDRNEWLEN		6
74#define	ARC_HDRNEWLEN_EXC	10
75
76/* these lengths are data link layer length - 2 * ARC_ADDR_LEN */
77#define	ARC_MIN_LEN		1
78#define	ARC_MIN_FORBID_LEN	254
79#define	ARC_MAX_FORBID_LEN	256
80#define	ARC_MAX_LEN		508
81#define ARC_MAX_DATA		504
82
83/* RFC 1051 */
84#define	ARCTYPE_IP_OLD		240	/* IP protocol */
85#define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
86
87/* RFC 1201 */
88#define	ARCTYPE_IP		212	/* IP protocol */
89#define	ARCTYPE_ARP		213	/* address resolution protocol */
90#define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
91
92#define	ARCTYPE_ATALK		221	/* Appletalk */
93#define	ARCTYPE_BANIAN		247	/* Banyan Vines */
94#define	ARCTYPE_IPX		250	/* Novell IPX */
95
96#define ARCTYPE_INET6		0xc4	/* IPng */
97#define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
98
99#define	ARCMTU			507
100#define	ARCMIN			0
101
102#define ARC_PHDS_MAXMTU		60480
103
104struct	arccom {
105	struct	  ifnet *ac_ifp;	/* network-visible interface */
106
107	u_int16_t ac_seqid;		/* seq. id used by PHDS encap. */
108
109	u_int8_t  arc_shost;
110	u_int8_t  arc_dhost;
111	u_int8_t  arc_type;
112
113	u_int8_t  dummy0;
114	u_int16_t dummy1;
115	int sflag, fsflag, rsflag;
116	struct mbuf *curr_frag;
117
118	struct ac_frag {
119		u_int8_t  af_maxflag;	/* from first packet */
120		u_int8_t  af_lastseen;	/* last split flag seen */
121		u_int16_t af_seqid;
122		struct mbuf *af_packet;
123	} ac_fragtab[256];		/* indexed by sender ll address */
124};
125
126#ifdef _KERNEL
127extern u_int8_t arcbroadcastaddr;
128extern int arc_ipmtu;	/* XXX new ip only, no RFC 1051! */
129
130void	arc_ifattach(struct ifnet *, u_int8_t);
131void	arc_ifdetach(struct ifnet *);
132void	arc_storelladdr(struct ifnet *, u_int8_t);
133int	arc_isphds(u_int8_t);
134void	arc_input(struct ifnet *, struct mbuf *);
135int	arc_output(struct ifnet *, struct mbuf *,
136	    struct sockaddr *, struct route *);
137int	arc_ioctl(struct ifnet *, u_long, caddr_t);
138
139void		arc_frag_init(struct ifnet *);
140struct mbuf *	arc_frag_next(struct ifnet *);
141#endif
142
143#endif /* _NET_IF_ARC_H_ */
144