glibc (2.38)
1 /* Copyright (C) 1997-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #ifndef _NETINET_IGMP_H
19 #define _NETINET_IGMP_H 1
20
21 #include <sys/cdefs.h>
22 #include <sys/types.h>
23
24 #ifdef __USE_MISC
25
26 #include <netinet/in.h>
27
28 __BEGIN_DECLS
29
30 /*
31 * Copyright (c) 1988 Stephen Deering.
32 * Copyright (c) 1992, 1993
33 * The Regents of the University of California. All rights reserved.
34 *
35 * This code is derived from software contributed to Berkeley by
36 * Stephen Deering of Stanford University.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 4. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)igmp.h 8.1 (Berkeley) 6/10/93
63 * $FreeBSD$
64 */
65
66 struct igmp {
67 uint8_t igmp_type; /* IGMP type */
68 uint8_t igmp_code; /* routing code */
69 uint16_t igmp_cksum; /* checksum */
70 struct in_addr igmp_group; /* group address */
71 };
72
73 #define IGMP_MINLEN 8
74
75 /*
76 * Message types, including version number.
77 */
78 #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
79 #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
80 #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
81 #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
82
83 #define IGMP_DVMRP 0x13 /* DVMRP routing message */
84 #define IGMP_PIM 0x14 /* PIM routing message */
85 #define IGMP_TRACE 0x15
86
87 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
88 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */
89 #define IGMP_MRDISC_ADV 0x30 /* From RFC4286. */
90
91 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
92 /* query (in seconds) according */
93 /* to RFC1112 */
94 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */
95 /* specifies time in 10th of seconds*/
96
97 /*
98 * States for the IGMP v2 state table.
99 */
100 #define IGMP_DELAYING_MEMBER 1
101 #define IGMP_IDLE_MEMBER 2
102 #define IGMP_LAZY_MEMBER 3
103 #define IGMP_SLEEPING_MEMBER 4
104 #define IGMP_AWAKENING_MEMBER 5
105
106 /*
107 * States for IGMP router version cache.
108 */
109 #define IGMP_v1_ROUTER 1
110 #define IGMP_v2_ROUTER 2
111
112 /*
113 * The following four definitions are for backwards compatibility.
114 * They should be removed as soon as all applications are updated to
115 * use the new constant names.
116 */
117 #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
118 #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
119 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
120 #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP
121
122 __END_DECLS
123
124 #endif
125
126 #endif /* netinet/igmp.h */
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