Annotation of sys/netinet/pim.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pim.h,v 1.2 2006/04/27 02:19:32 tedu Exp $ */
2: /* $NetBSD: pim.h,v 1.1 2004/09/04 23:32:29 manu Exp $ */
3:
4: /*
5: * Copyright (c) 1996-2000
6: * University of Southern California/Information Sciences Institute.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. Neither the name of the project nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: * $FreeBSD: /repoman/r/ncvs/src/sys/netinet/pim.h,v 1.2 2004/03/08 07:45:32 hsu Exp $
34: */
35:
36: #ifndef _NETINET_PIM_H_
37: #define _NETINET_PIM_H_
38:
39: /*
40: * Protocol Independent Multicast (PIM) definitions.
41: * RFC 2362, June 1998.
42: *
43: * Written by Ahmed Helmy, USC/SGI, July 1996.
44: * Modified by George Edmond Eddy (Rusty), ISI, February 1998.
45: * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
46: */
47:
48: #include <sys/types.h>
49:
50: #ifndef _PIM_VT
51: #ifndef _BYTE_ORDER
52: # error _BYTE_ORDER is not defined!
53: #endif
54: #if (_BYTE_ORDER != _BIG_ENDIAN) && (_BYTE_ORDER != _LITTLE_ENDIAN)
55: # error _BYTE_ORDER must be defined to either _BIG_ENDIAN or _LITTLE_ENDIAN
56: #endif
57: #endif /* ! _PIM_VT */
58:
59: /*
60: * PIM packet header
61: */
62: struct pim {
63: #ifdef _PIM_VT
64: uint8_t pim_vt; /* PIM version and message type */
65: #else /* ! _PIM_VT */
66: #if _BYTE_ORDER == _BIG_ENDIAN
67: u_int pim_vers:4, /* PIM protocol version */
68: pim_type:4; /* PIM message type */
69: #endif
70: #if _BYTE_ORDER == _LITTLE_ENDIAN
71: u_int pim_type:4, /* PIM message type */
72: pim_vers:4; /* PIM protocol version */
73: #endif
74: #endif /* ! _PIM_VT */
75: uint8_t pim_reserved; /* Reserved */
76: uint16_t pim_cksum; /* IP-style checksum */
77: };
78: /* KAME-related name backward compatibility */
79: #define pim_ver pim_vers
80: #define pim_rsv pim_reserved
81:
82: #ifdef _PIM_VT
83: #define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t))))
84: #define PIM_VT_V(x) (((x) >> 4) & 0x0f)
85: #define PIM_VT_T(x) ((x) & 0x0f)
86: #endif /* _PIM_VT */
87:
88: #define PIM_VERSION 2
89: #define PIM_MINLEN 8 /* PIM message min. length */
90: #define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
91: #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
92:
93: /*
94: * PIM message types
95: */
96: #define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */
97: #define PIM_REGISTER 0x1 /* PIM-SM only */
98: #define PIM_REGISTER_STOP 0x2 /* PIM-SM only */
99: #define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */
100: #define PIM_BOOTSTRAP 0x4 /* PIM-SM only */
101: #define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */
102: #define PIM_GRAFT 0x6 /* PIM-DM only */
103: #define PIM_GRAFT_ACK 0x7 /* PIM-DM only */
104: #define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */
105: #define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */
106:
107: /*
108: * PIM-Register message flags
109: */
110: #define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */
111: #define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/
112:
113: /*
114: * All-PIM-Routers IPv4 and IPv6 multicast addresses
115: */
116: #define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */
117: #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d"
118: #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \
119: {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
120: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
121:
122: #endif /* _NETINET_PIM_H_ */
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