1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef	_VRRP_H
28#define	_VRRP_H
29
30#include <stdint.h>
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36typedef struct vrrp_pkt_s {
37	uint8_t		vp_vers_type;
38	uint8_t		vp_vrid;
39	uint8_t		vp_prio;
40	uint8_t		vp_ipnum;
41	uint16_t	vp_rsvd_adver_int;
42	uint16_t	vp_chksum;
43	/* then follows <vp_ipnum> IPvX addresses */
44	/* then follows NO authentification data */
45} vrrp_pkt_t;
46
47#define	IPPROTO_VRRP		112	/* IP protocol number */
48#define	VRRP_AUTH_LEN		0	/* XXX length of a chunk of Auth Data */
49
50#define	VRRP_IP_TTL		255	/* IPv4 TTL, IPv6 hop limit */
51#define	VRRP_VERSION		3	/* current version */
52#define	VRRP_PKT_ADVERT		1	/* packet type */
53#define	VRRP_VER_MASK		0xf0	/* version mask */
54#define	VRRP_TYPE_MASK		0x0f	/* packet type mask */
55
56#define	VRRP_PRI_OWNER		255	/* priority of IP address owner */
57#define	VRRP_PRI_MIN		1	/* minimum priority */
58#define	VRRP_PRIO_ZERO		0	/* stop participating VRRP */
59#define	VRRP_PRI_DEFAULT	VRRP_PRI_OWNER	/* default priority */
60
61#define	VRRP_VRID_NONE		0
62#define	VRRP_VRID_MIN		1
63#define	VRRP_VRID_MAX		255
64
65#define	CENTISEC2MSEC(centisec)	((centisec) * 10)
66#define	MSEC2CENTISEC(msec)	((msec) / 10)
67
68/* Max advertisement interval, in msec */
69#define	VRRP_MAX_ADVER_INT_MIN	CENTISEC2MSEC(1)
70#define	VRRP_MAX_ADVER_INT_MAX	CENTISEC2MSEC(4095)	/* (2^12 -1) */
71#define	VRRP_MAX_ADVER_INT_DFLT	CENTISEC2MSEC(100)	/* 1 sec */
72
73#ifdef __cplusplus
74}
75#endif
76
77#endif	/* _VRRP_H */
78