1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*-
* Copyright (c) 1988 Stephen Deering.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Stephen Deering of Stanford University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)igmp.h 8.1 (Berkeley) 6/10/93
* $FreeBSD$
*/
#ifndef _NETINET_IGMP_H_
#define _NETINET_IGMP_H_
/*
* Internet Group Management Protocol (IGMP) definitions.
*
* Written by Steve Deering, Stanford, May 1988.
*
* MULTICAST Revision: 3.5.1.2
*/
/*
* IGMP packet format.
*/
struct igmp {
u_char igmp_type; /* version & type of IGMP message */
u_char igmp_code; /* subtype for routing msgs */
u_short igmp_cksum; /* IP-style checksum */
struct in_addr igmp_group; /* group address being reported */
}; /* (zero for queries) */
struct igmpv3 {
u_char igmp_type; /* version & type of IGMP message */
u_char igmp_code; /* subtype for routing msgs */
u_short igmp_cksum; /* IP-style checksum */
struct in_addr igmp_group; /* group address being reported */
/* (zero for queries) */
u_char igmp_misc; /* reserved/suppress/robustness */
u_char igmp_qqi; /* querier's query interval */
u_short igmp_numsrc; /* number of sources */
/*struct in_addr igmp_sources[1];*/ /* source addresses */
};
struct igmp_grouprec {
u_char ig_type; /* record type */
u_char ig_datalen; /* length of auxiliary data */
u_short ig_numsrc; /* number of sources */
struct in_addr ig_group; /* group address being reported */
/*struct in_addr ig_sources[1];*/ /* source addresses */
};
struct igmp_report {
u_char ir_type; /* record type */
u_char ir_rsv1; /* reserved */
u_short ir_cksum; /* checksum */
u_short ir_rsv2; /* reserved */
u_short ir_numgrps; /* number of group records */
struct igmp_grouprec ir_groups[1]; /* group records */
};
#define IGMP_MINLEN 8
#define IGMP_HDRLEN 8
#define IGMP_GRPREC_HDRLEN 8
#define IGMP_PREPEND 0
#if 0
#define IGMP_QRV(pigmp) ((pigmp)->igmp_misc & (0x07)) /* XXX */
#define IGMP_MAXSOURCES(len) (((len) - 12) >> 2) /* XXX */
#endif
/*
* Message types, including version number.
*/
#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
#define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
#define IGMP_DVMRP 0x13 /* DVMRP routing message */
#define IGMP_PIM 0x14 /* PIM routing message */
#define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
#define IGMP_MTRACE 0x1f /* mcast traceroute messages */
#define IGMP_V3_MEMBERSHIP_REPORT 0x22 /* Ver. 3 membership report */
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
/* query (in seconds) according */
/* to RFC1112 */
#define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */
/* specifies time in 10th of seconds*/
/*
* The following four defininitions are for backwards compatibility.
* They should be removed as soon as all applications are updated to
* use the new constant names.
*/
#define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
#define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
#define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP
#endif /* _NETINET_IGMP_H_ */
|
