Annotation of sys/netinet6/pim6.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pim6.h,v 1.3 2005/12/10 01:30:14 deraadt 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: * Protocol Independent Multicast (PIM) definitions
34: *
35: * Written by Ahmed Helmy, SGI, July 1996
36: *
37: * MULTICAST
38: */
39:
40: /*
41: * PIM packet header
42: */
43: #define PIM_VERSION 2
44: struct pim {
45: #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
46: u_int pim_type:4, /* the PIM message type, currently they are:
47: * Hello, Register, Register-Stop, Join/Prune,
48: * Bootstrap, Assert, Graft (PIM-DM only),
49: * Graft-Ack (PIM-DM only), C-RP-Adv
50: */
51: pim_ver:4; /* PIM version number; 2 for PIMv2 */
52: #else
53: u_int pim_ver:4, /* PIM version */
54: pim_type:4; /* PIM type */
55: #endif
56: u_char pim_rsv; /* Reserved */
57: u_short pim_cksum; /* IP style check sum */
58: };
59:
60: #define PIM_MINLEN 8 /* The header min. length is 8 */
61: #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */
62:
63: /*
64: * Message types
65: */
66: #define PIM_REGISTER 1 /* PIM Register type is 1 */
67:
68: /* second bit in reg_head is the null bit */
69: #define PIM_NULL_REGISTER 0x40000000
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