iso88025.h revision 44165 
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 * $Id: iso88025.h,v 1.10 1999/01/09 19:01:58 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 * The number of bytes in an iso 802.5 (MAC) address.
48 */
49#define	ISO88025_ADDR_LEN	6
50
51/*
52 */
53#define ISO88025_HDR_LEN        (ISO88025_CF_LEN + ISO88025_ADDR_LEN*2)
54#define ISO88025_CF_LEN         2
55#define RCF_LEN                 2
56#define RIF_LEN                 16
57
58
59/*
60 * The minimum packet length.
61 */
62#define	ISO88025_MIN_LEN	0 /* This offends my morality */
63
64/*
65 * The maximum packet length.
66 */
67#define	ISO88025_MAX_LEN	17960
68
69/*
70 * A macro to validate a length with
71 */
72#define	ISO88025_IS_VALID_LEN(foo)	\
73	((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
74
75/*
76 * ISO 802.5 physical header
77 */
78struct iso88025_header {
79        u_char   ac;                                    /* access control field */
80        u_char   fc;                                    /* frame control field */
81        u_char   iso88025_dhost[ISO88025_ADDR_LEN];     /* destination address */
82        u_char   iso88025_shost[ISO88025_ADDR_LEN];     /* source address */
83        u_short  rcf;                                   /* route control field */
84        u_short  rseg[RIF_LEN];                         /* routing registers */
85};
86
87/*
88 * Structure of a 48-bit iso 802.5 address.
89 *  ( We could also add the 16 bit addresses as a union)
90 */
91struct	iso88025_addr {
92	u_char octet[ISO88025_ADDR_LEN];
93};
94
95#define ISO88025MTU     18000
96#define ISO88025_DEFAULT_MTU     1500
97#define senderr(e) { error = (e); goto bad;}
98
99void   iso88025_ifattach __P((struct ifnet *));
100int    iso88025_ioctl __P((struct ifnet *, int , caddr_t ));
101int    iso88025_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, struct rtentry *));
102void   iso88025_input __P((struct ifnet *, struct iso88025_header *, struct mbuf *));
103
104
105#endif
106