1 | /* $NetBSD: pim6.h,v 1.5 2005/12/10 23:39:56 elad Exp $ */ |
2 | /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */ |
3 | |
4 | /* |
5 | * Copyright (C) 1998 WIDE Project. |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. Neither the name of the project nor the names of its contributors |
17 | * may be used to endorse or promote products derived from this software |
18 | * without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 | * SUCH DAMAGE. |
31 | */ |
32 | |
33 | #ifndef _NETINET6_PIM6_H_ |
34 | #define _NETINET6_PIM6_H_ |
35 | |
36 | /* |
37 | * Protocol Independent Multicast (PIM) definitions |
38 | * |
39 | * Written by Ahmed Helmy, SGI, July 1996 |
40 | * |
41 | * MULTICAST |
42 | */ |
43 | |
44 | /* |
45 | * PIM packet header |
46 | */ |
47 | #define PIM_VERSION 2 |
48 | struct pim { |
49 | #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN) |
50 | u_char pim_type:4, /* the PIM message type, currently they are: |
51 | * Hello, Register, Register-Stop, Join/Prune, |
52 | * Bootstrap, Assert, Graft (PIM-DM only), |
53 | * Graft-Ack (PIM-DM only), C-RP-Adv |
54 | */ |
55 | pim_ver:4; /* PIM version number; 2 for PIMv2 */ |
56 | #else |
57 | u_char pim_ver:4, /* PIM version */ |
58 | pim_type:4; /* PIM type */ |
59 | #endif |
60 | u_char pim_rsv; /* Reserved */ |
61 | u_short pim_cksum; /* IP style check sum */ |
62 | }; |
63 | |
64 | #define PIM_MINLEN 8 /* The header min. length is 8 */ |
65 | #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */ |
66 | |
67 | /* |
68 | * Message types |
69 | */ |
70 | #define PIM_REGISTER 1 /* PIM Register type is 1 */ |
71 | |
72 | /* second bit in reg_head is the null bit */ |
73 | #define PIM_NULL_REGISTER 0x40000000 |
74 | |
75 | #endif /* !_NETINET6_PIM6_H_ */ |
76 | |