igmp_var.h revision 1.6 
1/*	$NetBSD: igmp_var.h,v 1.6 1994/06/29 06:37:59 cgd Exp $	*/
2
3/*
4 * Copyright (c) 1988 Stephen Deering.
5 * Copyright (c) 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Stephen Deering of Stanford University.
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, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	@(#)igmp_var.h	8.1 (Berkeley) 7/19/93
40 */
41
42/*
43 * Internet Group Management Protocol (IGMP),
44 * implementation-specific definitions.
45 *
46 * Written by Steve Deering, Stanford, May 1988.
47 *
48 * MULTICAST 1.1
49 */
50
51struct igmpstat {
52	u_long	igps_rcv_total;		/* total IGMP messages received */
53	u_long	igps_rcv_tooshort;	/* received with too few bytes */
54	u_long	igps_rcv_badsum;	/* received with bad checksum */
55	u_long	igps_rcv_queries;	/* received membership queries */
56	u_long	igps_rcv_badqueries;	/* received invalid queries */
57	u_long	igps_rcv_reports;	/* received membership reports */
58	u_long	igps_rcv_badreports;	/* received invalid reports */
59	u_long	igps_rcv_ourreports;	/* received reports for our groups */
60	u_long	igps_snd_reports;	/* sent membership reports */
61};
62
63#ifdef KERNEL
64struct igmpstat igmpstat;
65
66/*
67 * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
68 * DELAY * countdown frequency).  We assume that the routine random()
69 * is defined somewhere (and that it returns a positive number).
70 */
71#define	IGMP_RANDOM_DELAY(multiaddr)					\
72	/* struct in_addr multiaddr; */					\
73	(random() % (IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ) + 1)
74
75void	igmp_init __P((void));
76void	igmp_input __P((struct mbuf *, int));
77void	igmp_joingroup __P((struct in_multi *));
78void	igmp_leavegroup __P((struct in_multi *));
79void	igmp_fasttimo __P((void));
80#endif
81