Annotation of sys/netinet/igmp.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: igmp.h,v 1.6 2003/06/02 23:28:13 millert Exp $ */
2: /* $NetBSD: igmp.h,v 1.6 1995/05/31 06:08:21 mycroft Exp $ */
3:
4: /*
5: * Copyright (c) 1988 Stephen Deering.
6: * Copyright (c) 1992, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * Stephen Deering of Stanford University.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: *
36: * @(#)igmp.h 8.1 (Berkeley) 6/10/93
37: */
38:
39: #ifndef _NETINET_IGMP_H_
40: #define _NETINET_IGMP_H_
41:
42: /*
43: * Internet Group Management Protocol (IGMP) definitions.
44: *
45: * MULTICAST 1.3
46: */
47:
48: /*
49: * IGMP packet format.
50: */
51: struct igmp {
52: u_int8_t igmp_type; /* version & type of IGMP message */
53: u_int8_t igmp_code; /* code for routing sub-messages */
54: u_int16_t igmp_cksum; /* IP-style checksum */
55: struct in_addr igmp_group; /* group address being reported */
56: }; /* (zero for queries) */
57:
58: #define IGMP_MINLEN 8
59:
60: #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */
61: #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* v1 membership report */
62: #define IGMP_DVMRP 0x13 /* DVMRP routing message */
63: #define IGMP_PIM 0x14 /* PIM routing message */
64: #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* v2 membership report */
65: #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* leave-group message */
66: #define IGMP_MTRACE_REPLY 0x1e /* traceroute reply */
67: #define IGMP_MTRACE_QUERY 0x1f /* traceroute query */
68:
69: #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
70: /* query (in seconds) */
71:
72: #define IGMP_TIMER_SCALE 10 /* denominator for igmp_timer */
73:
74: /*
75: * States for the IGMP v2 state table.
76: */
77: #define IGMP_DELAYING_MEMBER 1
78: #define IGMP_IDLE_MEMBER 2
79: #define IGMP_LAZY_MEMBER 3
80: #define IGMP_SLEEPING_MEMBER 4
81: #define IGMP_AWAKENING_MEMBER 5
82:
83: /*
84: * States for IGMP router version cache.
85: */
86: #define IGMP_v1_ROUTER 1
87: #define IGMP_v2_ROUTER 2
88:
89: /*
90: * Revert to v2 if we haven't heard from the router in this amount of time.
91: */
92: #define IGMP_AGE_THRESHOLD 540
93:
94: #ifdef _KERNEL
95: void rti_delete(struct ifnet *);
96: #endif /* _KERNEL */
97: #endif /* _NETINET_IGMP_H_ */
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