Watt-32 tcp/ip  2.2 dev-rel.10
igmp.h
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1 
5 /*
6  * Copyright (c) 1988 Stephen Deering.
7  * Copyright (c) 1992, 1993
8  * The Regents of the University of California. All rights reserved.
9  *
10  * This code is derived from software contributed to Berkeley by
11  * Stephen Deering of Stanford University.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
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.
28  *
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
39  * SUCH DAMAGE.
40  *
41  * @(#)igmp.h 8.1 (Berkeley) 6/10/93
42  * $Id: igmp.h,v 1.7 1996/03/14 16:59:17 fenner Exp $
43  */
44 
45 #ifndef __NETINET_IGMP_H
46 #define __NETINET_IGMP_H
47 
48 /*
49  * Internet Group Management Protocol (IGMP) definitions.
50  *
51  * Written by Steve Deering, Stanford, May 1988.
52  *
53  * MULTICAST Revision: 3.5.1.2
54  */
55 
56 /*
57  * IGMP packet format.
58  */
59 
60 #include <sys/pack_on.h>
61 
62 struct igmp {
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) */
68 
69 #include <sys/pack_off.h>
70 
71 #define IGMP_MINLEN 8
72 
73 /*
74  * Message types, including version number.
75  */
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 */
80 
81 #define IGMP_DVMRP 0x13 /* DVMRP routing message */
82 #define IGMP_PIM 0x14 /* PIM routing message */
83 
84 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
85 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */
86 
87 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
88  /* query (in seconds) according */
89  /* to RFC1112 */
90 
91 
92 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */
93  /* specifies time in 10th of seconds*/
94 
95 /*
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.
99  */
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
104 
105 #endif
Definition: igmp.h:62
Definition: in.h:146