Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / net / if_arc.h
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1/* $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $ */
2/* $FreeBSD: src/sys/net/if_arc.h,v 1.2.2.3 2003/01/28 11:19:05 fjoe Exp $ */
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#define ARC_MAX_DATA 504
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 int arc_ipmtu; /* XXX new ip only, no RFC 1051! */
132
133void arc_ifattach __P((struct ifnet *, u_int8_t));
134void arc_ifdetach __P((struct ifnet *));
135void arc_storelladdr __P((struct ifnet *, u_int8_t));
136int arc_isphds __P((int));
137void arc_input __P((struct ifnet *, struct mbuf *));
138int arc_output __P((struct ifnet *, struct mbuf *,
139 struct sockaddr *, struct rtentry *));
140int arc_ioctl __P((struct ifnet *, int, caddr_t));
141
142void arc_frag_init __P((struct ifnet *));
143struct mbuf * arc_frag_next __P((struct ifnet *));
144#endif
145
146#endif /* _NET_IF_ARC_H_ */