HAMMER 60I/Many: Mirroring
[dragonfly.git] / sys / netinet / igmp.h
blobdce9ef1aeaad0eca53426d497a148cb46d6a66de
1 /*
2 * Copyright (c) 1988 Stephen Deering.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Stephen Deering of Stanford University.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
37 * @(#)igmp.h 8.1 (Berkeley) 6/10/93
38 * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $
39 * $DragonFly: src/sys/netinet/igmp.h,v 1.4 2006/05/20 02:42:12 dillon Exp $
42 #ifndef _NETINET_IGMP_H_
43 #define _NETINET_IGMP_H_
45 #ifndef _SYS_TYPES_H_
46 #include <sys/types.h>
47 #endif
48 #ifndef _NETINET_IN_H_
49 #include <netinet/in.h>
50 #endif
53 * Internet Group Management Protocol (IGMP) definitions.
55 * Written by Steve Deering, Stanford, May 1988.
57 * MULTICAST Revision: 3.5.1.2
61 * IGMP packet format.
63 struct igmp {
64 u_char igmp_type; /* version & type of IGMP message */
65 u_char igmp_code; /* subtype for routing msgs */
66 u_short igmp_cksum; /* IP-style checksum */
67 struct in_addr igmp_group; /* group address being reported */
68 }; /* (zero for queries) */
70 #define IGMP_MINLEN 8
73 * Message types, including version number.
75 #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
76 #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
77 #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
78 #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
80 #define IGMP_DVMRP 0x13 /* DVMRP routing message */
81 #define IGMP_PIM 0x14 /* PIM routing message */
83 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
84 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */
86 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to
87 * query (in seconds) according
88 * to RFC1112 */
90 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field
91 * specifies time in 10th of seconds*/
94 * The following four defininitions are for backwards compatibility.
95 * They should be removed as soon as all applications are updated to
96 * use the new constant names.
98 #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
99 #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
100 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
101 #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP
103 #endif /* _NETINET_IGMP_H_ */