1 /*!\file netinet6/pim6.h
5 /* $FreeBSD: src/sys/netinet6/pim6.h,v 1.2 2000/07/04 16:35:10 itojun Exp $ */
6 /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */
9 * Copyright (C) 1998 WIDE Project.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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 project 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.
24 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * Protocol Independent Multicast (PIM) definitions
39 * Written by Ahmed Helmy, SGI, July 1996
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
55 pim_ver:4; /* PIM version number; 2 for PIMv2 */
57 u_char pim_ver:4, /* PIM version */
58 pim_type:4; /* PIM type */
60 u_char pim_rsv; /* Reserved */
61 u_short pim_cksum; /* IP style check sum */
64 #define PIM_MINLEN 8 /* The header min. length is 8 */
65 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */
70 #define PIM_REGISTER 1 /* PIM Register type is 1 */
72 /* second bit in reg_head is the null bit */
73 #define PIM_NULL_REGISTER 0x40000000