1 /*!\file netinet/igmp.h
2 * Internet Group Managment Protocol.
6 * Copyright (c) 1988 Stephen Deering.
7 * Copyright (c) 1992, 1993
8 * The Regents of the University of California. All rights reserved.
10 * This code is derived from software contributed to Berkeley by
11 * Stephen Deering of Stanford University.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * @(#)igmp.h 8.1 (Berkeley) 6/10/93
42 * $Id: igmp.h,v 1.7 1996/03/14 16:59:17 fenner Exp $
45 #ifndef __NETINET_IGMP_H
46 #define __NETINET_IGMP_H
49 * Internet Group Management Protocol (IGMP) definitions.
51 * Written by Steve Deering, Stanford, May 1988.
53 * MULTICAST Revision: 3.5.1.2
60 #include <sys/packon.h>
63 u_char igmp_type; /* version & type of IGMP message */
64 u_char igmp_code; /* subtype for routing msgs */
65 u_short igmp_cksum; /* IP-style checksum */
66 struct in_addr igmp_group; /* group address being reported */
67 }; /* (zero for queries) */
69 #include <sys/packoff.h>
74 * Message types, including version number.
76 #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
77 #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
78 #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
79 #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
81 #define IGMP_DVMRP 0x13 /* DVMRP routing message */
82 #define IGMP_PIM 0x14 /* PIM routing message */
84 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
85 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */
87 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
88 /* query (in seconds) according */
92 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */
93 /* specifies time in 10th of seconds*/
96 * The following four defininitions are for backwards compatibility.
97 * They should be removed as soon as all applications are updated to
98 * use the new constant names.
100 #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
101 #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
102 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
103 #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP