if_arc.h revision 92725 
1/*	$NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $	*/
2/* $FreeBSD: head/sys/net/if_arc.h 92725 2002-03-19 21:54:18Z alfred $ */
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 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
37 *       @(#)if_ether.h	8.1 (Berkeley) 6/10/93
38 */
39
40#ifndef _NET_IF_ARC_H_
41#define _NET_IF_ARC_H_
42
43/*
44 * Arcnet address - 1 octets
45 * don't know who uses this.
46 */
47struct arc_addr {
48	u_int8_t  arc_addr_octet[1];
49} __attribute__((__packed__));
50
51/*
52 * Structure of a 2.5MB/s Arcnet header.
53 * as given to interface code.
54 */
55struct	arc_header {
56	u_int8_t  arc_shost;
57	u_int8_t  arc_dhost;
58	u_int8_t  arc_type;
59	/*
60	 * only present for newstyle encoding with LL fragmentation.
61	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
62	 */
63	u_int8_t  arc_flag;
64	u_int16_t arc_seqid;
65
66	/*
67	 * only present in exception packets (arc_flag == 0xff)
68	 */
69	u_int8_t  arc_type2;	/* same as arc_type */
70	u_int8_t  arc_flag2;	/* real flag value */
71	u_int16_t arc_seqid2;	/* real seqid value */
72} __attribute__((__packed__));
73
74#define	ARC_ADDR_LEN		1
75
76#define	ARC_HDRLEN		3
77#define	ARC_HDRNEWLEN		6
78#define	ARC_HDRNEWLEN_EXC	10
79
80/* these lengths are data link layer length - 2*ARC_ADDR_LEN */
81#define	ARC_MIN_LEN		1
82#define	ARC_MIN_FORBID_LEN	254
83#define	ARC_MAX_FORBID_LEN	256
84#define	ARC_MAX_LEN		508
85
86
87/* RFC 1051 */
88#define	ARCTYPE_IP_OLD		240	/* IP protocol */
89#define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
90
91/* RFC 1201 */
92#define	ARCTYPE_IP		212	/* IP protocol */
93#define	ARCTYPE_ARP		213	/* address resolution protocol */
94#define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
95
96#define	ARCTYPE_ATALK		221	/* Appletalk */
97#define	ARCTYPE_BANIAN		247	/* Banyan Vines */
98#define	ARCTYPE_IPX		250	/* Novell IPX */
99
100#define ARCTYPE_INET6		0xc4	/* IPng */
101#define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
102
103#define	ARCMTU			507
104#define	ARCMIN			0
105
106#define ARC_PHDS_MAXMTU		60480
107
108struct	arccom {
109	struct	  ifnet ac_if;		/* network-visible interface */
110
111	u_int16_t ac_seqid;		/* seq. id used by PHDS encap. */
112
113	u_int8_t  arc_shost;
114	u_int8_t  arc_dhost;
115	u_int8_t  arc_type;
116
117	u_int8_t  dummy0;
118	u_int16_t dummy1;
119	int sflag, fsflag, rsflag;
120	struct mbuf *curr_frag;
121
122	struct ac_frag {
123		u_int8_t  af_maxflag;	/* from first packet */
124		u_int8_t  af_lastseen;	/* last split flag seen */
125		u_int16_t af_seqid;
126		struct mbuf *af_packet;
127	} ac_fragtab[256];		/* indexed by sender ll address */
128};
129
130#ifdef _KERNEL
131extern u_int8_t arcbroadcastaddr;
132extern int arc_ipmtu;	/* XXX new ip only, no RFC 1051! */
133
134void	arc_ifattach(struct ifnet *, u_int8_t);
135void	arc_ifdetach(struct ifnet *);
136void	arc_storelladdr(struct ifnet *, u_int8_t);
137char	*arc_sprintf(u_int8_t *);
138int	arc_isphds(int);
139void	arc_input(struct ifnet *, struct mbuf *);
140int	arc_output(struct ifnet *, struct mbuf *,
141	    struct sockaddr *, struct rtentry *);
142int	arc_ioctl(struct ifnet *, int, caddr_t);
143
144void		arc_frag_init(struct ifnet *);
145struct mbuf *	arc_frag_next(struct ifnet *);
146#endif
147
148#endif /* _NET_IF_ARC_H_ */
149