1/*
2 * Copyright (c) 1998, Larry Lile
3 * All rights reserved.
4 *
5 * For latest sources and information on this driver, please
6 * go to http://anarchy.stdio.com.
7 *
8 * Questions, comments or suggestions should be directed to
9 * Larry Lile <lile@stdio.com>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice unmodified, this list of conditions, and the following
16 *    disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 * $FreeBSD: src/sys/net/iso88025.h,v 1.3.2.1 2000/10/14 20:01:06 lile Exp $
34 *
35 * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
36 * the Mach token ring driver.
37 */
38
39/*
40 * Fundamental constants relating to iso 802.5
41 */
42
43#ifndef _NET_ISO88025_H_
44#define _NET_ISO88025_H_
45
46/*
47 * General ISO 802.5 definitions
48 */
49#define	ISO88025_ADDR_LEN	6
50#define ISO88025_HDR_LEN	(ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))
51#define ISO88025_CF_LEN		2
52#define RCF_LEN			2
53#define RIF_MAX_RD		14
54#define RIF_MAX_LEN		16
55
56#define TR_AC			0x10
57#define TR_LLC_FRAME		0x40
58
59#define TR_4MBPS		4000000
60#define TR_16MBPS		16000000
61#define TR_100MBPS		100000000
62
63/*
64 * Source routing
65 */
66#define	TR_RII			0x80
67#define TR_RCF_BCST_MASK	0xe000
68#define TR_RCF_LEN_MASK		0x1f00
69#define TR_RCF_DIR		0x0080
70#define TR_RCF_LF_MASK		0x0070
71
72#define TR_RCF_RIFLEN(x)	((ntohs(x) & TR_RCF_LEN_MASK) >> 8)
73
74/*
75 * Minimum and maximum packet payload lengths.
76 */
77#define	ISO88025_MIN_LEN	0
78#define	ISO88025_MAX_LEN	17960
79
80/*
81 * A macro to validate a length with
82 */
83#define	ISO88025_IS_VALID_LEN(foo)	\
84	((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
85
86/*
87 * ISO 802.5 physical header
88 */
89struct iso88025_header {
90	u_char	ac;				    /* access control field */
91	u_char	fc;				    /* frame control field */
92	u_char	iso88025_dhost[ISO88025_ADDR_LEN];  /* destination address */
93	u_char	iso88025_shost[ISO88025_ADDR_LEN];  /* source address */
94	u_short	rcf;				    /* route control field */
95	u_short	rd[RIF_MAX_RD];			    /* routing designators */
96};
97
98struct iso88025_sockaddr_data {
99	u_char ether_dhost[ISO88025_ADDR_LEN];
100	u_char ether_shost[ISO88025_ADDR_LEN];
101	u_char ac;
102	u_char fc;
103};
104
105/*
106 * Structure of a 48-bit iso 802.5 address.
107 *  ( We could also add the 16 bit addresses as a union)
108 */
109struct	iso88025_addr {
110	u_char octet[ISO88025_ADDR_LEN];
111};
112
113#define ISO88025_MAX_MTU	18000
114#define ISO88025_DEFAULT_MTU	1500
115#define senderr(e) { error = (e); goto bad;}
116
117#endif
118