1 //==========================================================================
3 // include/netinet/igmp_var.h
5 //==========================================================================
6 //####BSDCOPYRIGHTBEGIN####
8 // -------------------------------------------
10 // Portions of this software may have been derived from OpenBSD,
11 // FreeBSD or other sources, and are covered by the appropriate
12 // copyright disclaimers included herein.
14 // Portions created by Red Hat are
15 // Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
17 // -------------------------------------------
19 //####BSDCOPYRIGHTEND####
20 //==========================================================================
23 * Copyright (c) 1988 Stephen Deering.
24 * Copyright (c) 1992, 1993
25 * The Regents of the University of California. All rights reserved.
27 * This code is derived from software contributed to Berkeley by
28 * Stephen Deering of Stanford University.
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
33 * 1. Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in the
37 * documentation and/or other materials provided with the distribution.
38 * 3. All advertising materials mentioning features or use of this software
39 * must display the following acknowledgement:
40 * This product includes software developed by the University of
41 * California, Berkeley and its contributors.
42 * 4. Neither the name of the University nor the names of its contributors
43 * may be used to endorse or promote products derived from this software
44 * without specific prior written permission.
46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
59 * $FreeBSD: src/sys/netinet/igmp_var.h,v 1.17 1999/12/29 04:40:59 peter Exp $
62 #ifndef _NETINET_IGMP_VAR_H_
63 #define _NETINET_IGMP_VAR_H_
66 * Internet Group Management Protocol (IGMP),
67 * implementation-specific definitions.
69 * Written by Steve Deering, Stanford, May 1988.
71 * MULTICAST Revision: 3.5.1.3
75 u_int igps_rcv_total; /* total IGMP messages received */
76 u_int igps_rcv_tooshort; /* received with too few bytes */
77 u_int igps_rcv_badsum; /* received with bad checksum */
78 u_int igps_rcv_queries; /* received membership queries */
79 u_int igps_rcv_badqueries; /* received invalid queries */
80 u_int igps_rcv_reports; /* received membership reports */
81 u_int igps_rcv_badreports; /* received invalid reports */
82 u_int igps_rcv_ourreports; /* received reports for our groups */
83 u_int igps_snd_reports; /* sent membership reports */
87 #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
90 * States for IGMPv2's leave processing
92 #define IGMP_OTHERMEMBER 0
93 #define IGMP_IREPORTEDLAST 1
96 * We must remember what version the subnet's querier is.
97 * We conveniently use the IGMP message type for the proper
98 * membership report to keep this state.
100 #define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT
101 #define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT
104 * Revert to new router if we haven't heard from an old router in
105 * this amount of time.
107 #define IGMP_AGE_THRESHOLD 540
109 void igmp_init __P((void));
110 void igmp_input __P((struct mbuf *, int));
111 void igmp_joingroup __P((struct in_multi *));
112 void igmp_leavegroup __P((struct in_multi *));
113 void igmp_fasttimo __P((void));
114 void igmp_slowtimo __P((void));
116 SYSCTL_DECL(_net_inet_igmp);
121 * Names for IGMP sysctl objects
123 #define IGMPCTL_STATS 1 /* statistics (read-only) */
124 #define IGMPCTL_MAXID 2
126 #define IGMPCTL_NAMES { \
128 { "stats", CTLTYPE_STRUCT }, \