1 | /* $NetBSD: igmp.h,v 1.12 2014/05/29 23:02:48 rmind Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1992, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
8 | * Stephen Deering of Stanford University. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
35 | */ |
36 | |
37 | /* |
38 | * Copyright (c) 1988 Stephen Deering. |
39 | * |
40 | * This code is derived from software contributed to Berkeley by |
41 | * Stephen Deering of Stanford University. |
42 | * |
43 | * Redistribution and use in source and binary forms, with or without |
44 | * modification, are permitted provided that the following conditions |
45 | * are met: |
46 | * 1. Redistributions of source code must retain the above copyright |
47 | * notice, this list of conditions and the following disclaimer. |
48 | * 2. Redistributions in binary form must reproduce the above copyright |
49 | * notice, this list of conditions and the following disclaimer in the |
50 | * documentation and/or other materials provided with the distribution. |
51 | * 3. All advertising materials mentioning features or use of this software |
52 | * must display the following acknowledgement: |
53 | * This product includes software developed by the University of |
54 | * California, Berkeley and its contributors. |
55 | * 4. Neither the name of the University nor the names of its contributors |
56 | * may be used to endorse or promote products derived from this software |
57 | * without specific prior written permission. |
58 | * |
59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
69 | * SUCH DAMAGE. |
70 | * |
71 | * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
72 | */ |
73 | |
74 | #ifndef _NETINET_IGMP_H_ |
75 | #define _NETINET_IGMP_H_ |
76 | |
77 | /* |
78 | * Internet Group Management Protocol (IGMP) definitions. |
79 | * |
80 | * MULTICAST 1.3 |
81 | */ |
82 | |
83 | /* |
84 | * IGMP packet format. |
85 | */ |
86 | struct igmp { |
87 | uint8_t igmp_type; /* version & type of IGMP message */ |
88 | uint8_t igmp_code; /* code for routing sub-messages */ |
89 | uint16_t igmp_cksum; /* IP-style checksum */ |
90 | struct in_addr igmp_group; /* group address being reported */ |
91 | } __packed; /* (zero for queries) */ |
92 | |
93 | #define IGMP_MINLEN 8 |
94 | |
95 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ |
96 | #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* v1 membership report */ |
97 | #define IGMP_DVMRP 0x13 /* DVMRP routing message */ |
98 | #define IGMP_PIM 0x14 /* PIM routing message */ |
99 | #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* v2 membership report */ |
100 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* leave-group message */ |
101 | #define IGMP_MTRACE_REPLY 0x1e /* traceroute reply */ |
102 | #define IGMP_MTRACE_QUERY 0x1f /* traceroute query */ |
103 | |
104 | #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ |
105 | /* query (in seconds) */ |
106 | |
107 | #define IGMP_TIMER_SCALE 10 /* denominator for igmp_timer */ |
108 | |
109 | /* |
110 | * States for the IGMP v2 state table. |
111 | */ |
112 | #define IGMP_DELAYING_MEMBER 1 |
113 | #define IGMP_IDLE_MEMBER 2 |
114 | #define IGMP_LAZY_MEMBER 3 |
115 | #define IGMP_SLEEPING_MEMBER 4 |
116 | #define IGMP_AWAKENING_MEMBER 5 |
117 | |
118 | /* |
119 | * States for IGMP router version cache. |
120 | */ |
121 | #define IGMP_v1_ROUTER 1 |
122 | #define IGMP_v2_ROUTER 2 |
123 | |
124 | /* |
125 | * Revert to v2 if we haven't heard from the router in this amount of time. |
126 | */ |
127 | #define IGMP_AGE_THRESHOLD 540 |
128 | |
129 | #endif /* !_NETINET_IGMP_H_ */ |
130 | |