rip.h revision 1.1 
1/*	$OpenBSD: rip.h,v 1.1 2006/10/18 16:11:58 norby Exp $ */
2
3/*
4 * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19/* RIP protocol definitions */
20
21#ifndef	_RIP_H_
22#define	_RIP_H_
23
24/* misc */
25#define	RIP_VERSION		2
26#define ALL_RIP_ROUTERS		"224.0.0.9"
27#define	RIP_PORT		520
28
29#define	MIN_MD_ID		0
30#define	MAX_MD_ID		255
31
32/* metric */
33#define	INFINITY		16
34
35/* timers */
36#define	KEEPALIVE		30
37#define	OFFSET			10
38
39#define MAX_RIP_ENTRIES		25
40
41/* RIP command */
42#define	COMMAND_REQUEST		1
43#define	COMMAND_RESPONSE	2
44
45#define	RIP_HDR_LEN		sizeof(struct rip_hdr)
46#define	RIP_ENTRY_LEN		sizeof(struct rip_entry)
47
48struct rip_hdr {
49	u_int8_t	command;
50	u_int8_t	version;
51	u_int16_t	dummy;
52};
53
54struct rip_entry {
55	u_int16_t	AFI;
56	u_int16_t	route_tag;
57	u_int32_t	address;
58	u_int32_t	mask;
59	u_int32_t	nexthop;
60	u_int32_t	metric;
61};
62
63/* auth */
64#define AUTH                    0xFFFF
65#define	AUTH_TRLR_HDR_LEN	4
66
67/* auth general struct */
68struct rip_auth {
69	u_int16_t	 auth_fixed;
70	u_int16_t	 auth_type;
71};
72
73/* Keyed MD5 auth struct */
74struct md5_auth {
75	u_int16_t	 auth_offset;
76	u_int8_t	 auth_keyid;
77	u_int8_t	 auth_length;
78	u_int32_t	 auth_seq;
79	u_int64_t	 auth_reserved;
80};
81
82#endif /* _RIP_H_ */
83