Merge from vendor branch OPENSSL:
[dragonfly.git] / sys / netinet / pim.h
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1/*
2 * Copyright (c) 1996-2000
3 * University of Southern California/Information Sciences Institute.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the project nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/sys/netinet/pim.h,v 1.1.2.1 2003/08/24 17:04:44 hsu Exp $
1bd40720 31 * $DragonFly: src/sys/netinet/pim.h,v 1.4 2006/05/20 02:42:12 dillon Exp $
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32 */
33
34#ifndef _NETINET_PIM_H_
35#define _NETINET_PIM_H_
36
37/*
38 * Protocol Independent Multicast (PIM) definitions.
39 * RFC 2362, June 1998.
40 *
41 * Written by Ahmed Helmy, USC/SGI, July 1996.
42 * Modified by George Edmond Eddy (Rusty), ISI, February 1998.
43 * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
44 */
45
1bd40720 46#ifndef _SYS_TYPES_H_
45ecb0d2 47#include <sys/types.h>
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48#endif
49#ifndef _MACHINE_ENDIAN_H_
50#include <machine/endian.h>
51#endif
52
45ecb0d2 53
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54/*
55 * PIM packet header
56 */
57struct pim {
58#ifdef _PIM_VT
59 uint8_t pim_vt; /* PIM version and message type */
aae668f9 60#elif _BYTE_ORDER == _BIG_ENDIAN
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61 u_int pim_vers:4, /* PIM protocol version */
62 pim_type:4; /* PIM message type */
aae668f9 63#elif _BYTE_ORDER == _LITTLE_ENDIAN
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64 u_int pim_type:4, /* PIM message type */
65 pim_vers:4; /* PIM protocol version */
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66#else
67#error "Byte order not implemented"
f1f552f6 68#endif
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69 uint8_t pim_reserved; /* Reserved */
70 uint16_t pim_cksum; /* IP-style checksum */
71};
72/* KAME-related name backward compatibility */
73#define pim_ver pim_vers
74#define pim_rsv pim_reserved
75
76#ifdef _PIM_VT
77#define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t))))
78#define PIM_VT_V(x) (((x) >> 4) & 0x0f)
79#define PIM_VT_T(x) ((x) & 0x0f)
80#endif /* _PIM_VT */
81
82#define PIM_VERSION 2
83#define PIM_MINLEN 8 /* PIM message min. length */
84#define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
85#define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
86
87/*
88 * PIM message types
89 */
90#define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */
91#define PIM_REGISTER 0x1 /* PIM-SM only */
92#define PIM_REGISTER_STOP 0x2 /* PIM-SM only */
93#define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */
94#define PIM_BOOTSTRAP 0x4 /* PIM-SM only */
95#define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */
96#define PIM_GRAFT 0x6 /* PIM-DM only */
97#define PIM_GRAFT_ACK 0x7 /* PIM-DM only */
98#define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */
99#define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */
100
101/*
102 * PIM-Register message flags
103 */
104#define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */
105#define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/
106
107/*
108 * All-PIM-Routers IPv4 and IPv6 multicast addresses
109 */
110#define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */
111#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d"
112#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \
113 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
114 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
115
116#endif /* _NETINET_PIM_H_ */