1/*	$NetBSD: if_arc.h,v 1.23 2017/10/23 09:22:24 msaitoh Exp $	*/
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
32 *       @(#)if_ether.h	8.1 (Berkeley) 6/10/93
33 */
34
35#ifndef _NET_IF_ARC_H_
36#define _NET_IF_ARC_H_
37
38/*
39 * Arcnet address - 1 octets
40 * don't know who uses this.
41 */
42struct arc_addr {
43	uint8_t  arc_addr_octet[1];
44} __packed;
45
46/*
47 * Structure of a 2.5MB/s Arcnet header.
48 * as given to interface code.
49 */
50struct	arc_header {
51	uint8_t  arc_shost;
52	uint8_t  arc_dhost;
53	uint8_t  arc_type;
54	/*
55	 * only present for newstyle encoding with LL fragmentation.
56	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
57	 */
58	uint8_t  arc_flag;
59	uint16_t arc_seqid;
60
61	/*
62	 * only present in exception packets (arc_flag == 0xff)
63	 */
64	uint8_t  arc_type2;	/* same as arc_type */
65	uint8_t  arc_flag2;	/* real flag value */
66	uint16_t arc_seqid2;	/* real seqid value */
67} __packed;
68
69#define	ARC_ADDR_LEN		1
70
71#define	ARC_HDRLEN		3
72#define	ARC_HDRNEWLEN		6
73#define	ARC_HDRNEWLEN_EXC	10
74
75/* these lengths are data link layer length - 2*ARC_ADDR_LEN */
76#define	ARC_MIN_LEN		1
77#define	ARC_MIN_FORBID_LEN	254
78#define	ARC_MAX_FORBID_LEN	256
79#define	ARC_MAX_LEN		508
80
81
82/* RFC 1051 */
83#define	ARCTYPE_IP_OLD		240	/* IP protocol */
84#define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
85
86/* RFC 1201 */
87#define	ARCTYPE_IP		212	/* IP protocol */
88#define	ARCTYPE_ARP		213	/* address resolution protocol */
89#define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
90
91#define	ARCTYPE_ATALK		221	/* Appletalk */
92#define	ARCTYPE_BANIAN		247	/* Banyan Vines */
93#define	ARCTYPE_IPX		250	/* Novell IPX */
94
95#define ARCTYPE_INET6		0xc4	/* IPng */
96#define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
97
98#define	ARCMTU			507
99#define	ARCMIN			0
100
101#define ARC_PHDS_MAXMTU		60480
102
103struct	arccom {
104	struct 	  ifnet ac_if;		/* network-visible interface */
105
106	uint16_t ac_seqid;		/* seq. id used by PHDS encap. */
107
108	struct ac_frag {
109		uint8_t  af_maxflag;	/* from first packet */
110		uint8_t  af_lastseen;	/* last split flag seen */
111		uint16_t af_seqid;
112		struct mbuf *af_packet;
113	} ac_fragtab[256];		/* indexed by sender ll address */
114
115};
116
117#ifdef _KERNEL
118extern uint8_t arcbroadcastaddr;
119extern int arc_ipmtu;	/* XXX new ip only, no RFC 1051! */
120
121int	arc_ifattach(struct ifnet *, uint8_t);
122char	*arc_sprintf(uint8_t *);
123int	arc_isphds(uint8_t);
124#endif
125
126#endif /* !_NET_IF_ARC_H_ */
127