1 | /* |
---|
2 | * Copyright (c) 1988 Stephen Deering. |
---|
3 | * Copyright (c) 1992, 1993 |
---|
4 | * The Regents of the University of California. All rights reserved. |
---|
5 | * |
---|
6 | * This code is derived from software contributed to Berkeley by |
---|
7 | * Stephen Deering of Stanford University. |
---|
8 | * |
---|
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. |
---|
24 | * |
---|
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. |
---|
36 | * |
---|
37 | * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
---|
38 | * $Id$ |
---|
39 | */ |
---|
40 | |
---|
41 | #ifndef _NETINET_IGMP_H_ |
---|
42 | #define _NETINET_IGMP_H_ |
---|
43 | |
---|
44 | /* |
---|
45 | * Internet Group Management Protocol (IGMP) definitions. |
---|
46 | * |
---|
47 | * Written by Steve Deering, Stanford, May 1988. |
---|
48 | * |
---|
49 | * MULTICAST Revision: 3.5.1.2 |
---|
50 | */ |
---|
51 | |
---|
52 | /* |
---|
53 | * IGMP packet format. |
---|
54 | */ |
---|
55 | struct igmp { |
---|
56 | u_char igmp_type; /* version & type of IGMP message */ |
---|
57 | u_char igmp_code; /* subtype for routing msgs */ |
---|
58 | u_short igmp_cksum; /* IP-style checksum */ |
---|
59 | struct in_addr igmp_group; /* group address being reported */ |
---|
60 | }; /* (zero for queries) */ |
---|
61 | |
---|
62 | #define IGMP_MINLEN 8 |
---|
63 | |
---|
64 | /* |
---|
65 | * Message types, including version number. |
---|
66 | */ |
---|
67 | #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */ |
---|
68 | #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ |
---|
69 | #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ |
---|
70 | #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */ |
---|
71 | |
---|
72 | #define IGMP_DVMRP 0x13 /* DVMRP routing message */ |
---|
73 | #define IGMP_PIM 0x14 /* PIM routing message */ |
---|
74 | |
---|
75 | #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/ |
---|
76 | #define IGMP_MTRACE 0x1f /* mcast traceroute messages */ |
---|
77 | |
---|
78 | #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ |
---|
79 | /* query (in seconds) according */ |
---|
80 | /* to RFC1112 */ |
---|
81 | |
---|
82 | |
---|
83 | #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */ |
---|
84 | /* specifies time in 10th of seconds*/ |
---|
85 | |
---|
86 | /* |
---|
87 | * The following four defininitions are for backwards compatibility. |
---|
88 | * They should be removed as soon as all applications are updated to |
---|
89 | * use the new constant names. |
---|
90 | */ |
---|
91 | #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY |
---|
92 | #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT |
---|
93 | #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT |
---|
94 | #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP |
---|
95 | |
---|
96 | #endif /* _NETINET_IGMP_H_ */ |
---|