libutil: Prevent leaking slave fd on failed fork.
[dragonfly.git] / sys / netinet / pim.h
blob7051d1d660f868575a46ce76216d3005b1b72e3b
1 /*
2 * Copyright (c) 1996-2000
3 * University of Southern California/Information Sciences Institute.
4 * All rights reserved.
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.
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.
30 * $FreeBSD: src/sys/netinet/pim.h,v 1.1.2.1 2003/08/24 17:04:44 hsu Exp $
33 #ifndef _NETINET_PIM_H_
34 #define _NETINET_PIM_H_
37 * Protocol Independent Multicast (PIM) definitions.
38 * RFC 2362, June 1998.
40 * Written by Ahmed Helmy, USC/SGI, July 1996.
41 * Modified by George Edmond Eddy (Rusty), ISI, February 1998.
42 * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
45 #ifndef _SYS_TYPES_H_
46 #include <sys/types.h>
47 #endif
48 #include <machine/endian.h>
52 * PIM packet header
54 struct pim {
55 #ifdef _PIM_VT
56 uint8_t pim_vt; /* PIM version and message type */
57 #elif _BYTE_ORDER == _BIG_ENDIAN
58 u_int pim_vers:4, /* PIM protocol version */
59 pim_type:4; /* PIM message type */
60 #elif _BYTE_ORDER == _LITTLE_ENDIAN
61 u_int pim_type:4, /* PIM message type */
62 pim_vers:4; /* PIM protocol version */
63 #else
64 #error "Byte order not implemented"
65 #endif
66 uint8_t pim_reserved; /* Reserved */
67 uint16_t pim_cksum; /* IP-style checksum */
69 /* KAME-related name backward compatibility */
70 #define pim_ver pim_vers
71 #define pim_rsv pim_reserved
73 #ifdef _PIM_VT
74 #define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t))))
75 #define PIM_VT_V(x) (((x) >> 4) & 0x0f)
76 #define PIM_VT_T(x) ((x) & 0x0f)
77 #endif /* _PIM_VT */
79 #define PIM_VERSION 2
80 #define PIM_MINLEN 8 /* PIM message min. length */
81 #define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
82 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
85 * PIM message types
87 #define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */
88 #define PIM_REGISTER 0x1 /* PIM-SM only */
89 #define PIM_REGISTER_STOP 0x2 /* PIM-SM only */
90 #define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */
91 #define PIM_BOOTSTRAP 0x4 /* PIM-SM only */
92 #define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */
93 #define PIM_GRAFT 0x6 /* PIM-DM only */
94 #define PIM_GRAFT_ACK 0x7 /* PIM-DM only */
95 #define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */
96 #define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */
99 * PIM-Register message flags
101 #define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */
102 #define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/
105 * All-PIM-Routers IPv4 and IPv6 multicast addresses
107 #define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */
108 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d"
109 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \
110 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
111 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
113 #endif /* _NETINET_PIM_H_ */