pim.h revision 126740
1118623Shsu/* 2118623Shsu * Copyright (c) 1996-2000 3118623Shsu * University of Southern California/Information Sciences Institute. 4118623Shsu * All rights reserved. 5118623Shsu * 6118623Shsu * Redistribution and use in source and binary forms, with or without 7118623Shsu * modification, are permitted provided that the following conditions 8118623Shsu * are met: 9118623Shsu * 1. Redistributions of source code must retain the above copyright 10118623Shsu * notice, this list of conditions and the following disclaimer. 11118623Shsu * 2. Redistributions in binary form must reproduce the above copyright 12118623Shsu * notice, this list of conditions and the following disclaimer in the 13118623Shsu * documentation and/or other materials provided with the distribution. 14118623Shsu * 3. Neither the name of the project nor the names of its contributors 15118623Shsu * may be used to endorse or promote products derived from this software 16118623Shsu * without specific prior written permission. 17118623Shsu * 18118623Shsu * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 19118623Shsu * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20118623Shsu * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21118623Shsu * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 22118623Shsu * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23118623Shsu * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24118623Shsu * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25118623Shsu * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26118623Shsu * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27118623Shsu * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28118623Shsu * SUCH DAMAGE. 29118623Shsu * 30118623Shsu * $FreeBSD: head/sys/netinet/pim.h 126740 2004-03-08 07:45:32Z hsu $ 31118623Shsu */ 32118623Shsu 33118623Shsu#ifndef _NETINET_PIM_H_ 34118623Shsu#define _NETINET_PIM_H_ 35118623Shsu 36118623Shsu/* 37118623Shsu * Protocol Independent Multicast (PIM) definitions. 38118623Shsu * RFC 2362, June 1998. 39118623Shsu * 40118623Shsu * Written by Ahmed Helmy, USC/SGI, July 1996. 41118623Shsu * Modified by George Edmond Eddy (Rusty), ISI, February 1998. 42118623Shsu * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000. 43118623Shsu */ 44118623Shsu 45126740Shsu#include <sys/types.h> 46126740Shsu 47118623Shsu#ifndef _PIM_VT 48118623Shsu#ifndef BYTE_ORDER 49118623Shsu# error BYTE_ORDER is not defined! 50118623Shsu#endif 51118623Shsu#if (BYTE_ORDER != BIG_ENDIAN) && (BYTE_ORDER != LITTLE_ENDIAN) 52118623Shsu# error BYTE_ORDER must be defined to either BIG_ENDIAN or LITTLE_ENDIAN 53118623Shsu#endif 54118623Shsu#endif /* ! _PIM_VT */ 55118623Shsu 56118623Shsu/* 57118623Shsu * PIM packet header 58118623Shsu */ 59118623Shsustruct pim { 60118623Shsu#ifdef _PIM_VT 61118623Shsu uint8_t pim_vt; /* PIM version and message type */ 62118623Shsu#else /* ! _PIM_VT */ 63118623Shsu#if BYTE_ORDER == BIG_ENDIAN 64118623Shsu u_int pim_vers:4, /* PIM protocol version */ 65118623Shsu pim_type:4; /* PIM message type */ 66118623Shsu#endif 67118623Shsu#if BYTE_ORDER == LITTLE_ENDIAN 68118623Shsu u_int pim_type:4, /* PIM message type */ 69118623Shsu pim_vers:4; /* PIM protocol version */ 70118623Shsu#endif 71118623Shsu#endif /* ! _PIM_VT */ 72118623Shsu uint8_t pim_reserved; /* Reserved */ 73118623Shsu uint16_t pim_cksum; /* IP-style checksum */ 74118623Shsu}; 75118623Shsu/* KAME-related name backward compatibility */ 76118623Shsu#define pim_ver pim_vers 77118623Shsu#define pim_rsv pim_reserved 78118623Shsu 79118623Shsu#ifdef _PIM_VT 80118623Shsu#define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t)))) 81118623Shsu#define PIM_VT_V(x) (((x) >> 4) & 0x0f) 82118623Shsu#define PIM_VT_T(x) ((x) & 0x0f) 83118623Shsu#endif /* _PIM_VT */ 84118623Shsu 85118623Shsu#define PIM_VERSION 2 86118623Shsu#define PIM_MINLEN 8 /* PIM message min. length */ 87118623Shsu#define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */ 88118623Shsu#define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */ 89118623Shsu 90118623Shsu/* 91118623Shsu * PIM message types 92118623Shsu */ 93118623Shsu#define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */ 94118623Shsu#define PIM_REGISTER 0x1 /* PIM-SM only */ 95118623Shsu#define PIM_REGISTER_STOP 0x2 /* PIM-SM only */ 96118623Shsu#define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */ 97118623Shsu#define PIM_BOOTSTRAP 0x4 /* PIM-SM only */ 98118623Shsu#define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */ 99118623Shsu#define PIM_GRAFT 0x6 /* PIM-DM only */ 100118623Shsu#define PIM_GRAFT_ACK 0x7 /* PIM-DM only */ 101118623Shsu#define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */ 102118623Shsu#define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */ 103118623Shsu 104118623Shsu/* 105118623Shsu * PIM-Register message flags 106118623Shsu */ 107118623Shsu#define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */ 108118623Shsu#define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/ 109118623Shsu 110118623Shsu/* 111118623Shsu * All-PIM-Routers IPv4 and IPv6 multicast addresses 112118623Shsu */ 113118623Shsu#define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */ 114118623Shsu#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d" 115118623Shsu#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \ 116118623Shsu {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 117118623Shsu 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}} 118118623Shsu 119118623Shsu#endif /* _NETINET_PIM_H_ */ 120