1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1996-2000 5 * University of Southern California/Information Sciences Institute. 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 * $FreeBSD$ 33 */ 34 35#ifndef _NETINET_PIM_H_ 36#define _NETINET_PIM_H_ 37 38/* 39 * Protocol Independent Multicast (PIM) definitions. 40 * RFC 2362, June 1998. 41 * 42 * Written by Ahmed Helmy, USC/SGI, July 1996. 43 * Modified by George Edmond Eddy (Rusty), ISI, February 1998. 44 * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000. 45 */ 46 47#include <sys/types.h> 48 49#ifndef _PIM_VT 50#ifndef BYTE_ORDER 51# error BYTE_ORDER is not defined! 52#endif 53#if (BYTE_ORDER != BIG_ENDIAN) && (BYTE_ORDER != LITTLE_ENDIAN) 54# error BYTE_ORDER must be defined to either BIG_ENDIAN or LITTLE_ENDIAN 55#endif 56#endif /* ! _PIM_VT */ 57 58/* 59 * PIM packet header 60 */ 61struct pim { 62#ifdef _PIM_VT 63 uint8_t pim_vt; /* PIM version and message type */ 64#else /* ! _PIM_VT */ 65#if BYTE_ORDER == BIG_ENDIAN 66 u_int pim_vers:4, /* PIM protocol version */ 67 pim_type:4; /* PIM message type */ 68#endif 69#if BYTE_ORDER == LITTLE_ENDIAN 70 u_int pim_type:4, /* PIM message type */ 71 pim_vers:4; /* PIM protocol version */ 72#endif 73#endif /* ! _PIM_VT */ 74 uint8_t pim_reserved; /* Reserved */ 75 uint16_t pim_cksum; /* IP-style checksum */ 76}; 77/* KAME-related name backward compatibility */ 78#define pim_ver pim_vers 79#define pim_rsv pim_reserved 80 81#ifdef _PIM_VT 82#define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t)))) 83#define PIM_VT_V(x) (((x) >> 4) & 0x0f) 84#define PIM_VT_T(x) ((x) & 0x0f) 85#endif /* _PIM_VT */ 86 87#define PIM_VERSION 2 88#define PIM_MINLEN 8 /* PIM message min. length */ 89#define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */ 90#define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */ 91 92/* 93 * PIM message types 94 */ 95#define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */ 96#define PIM_REGISTER 0x1 /* PIM-SM only */ 97#define PIM_REGISTER_STOP 0x2 /* PIM-SM only */ 98#define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */ 99#define PIM_BOOTSTRAP 0x4 /* PIM-SM only */ 100#define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */ 101#define PIM_GRAFT 0x6 /* PIM-DM only */ 102#define PIM_GRAFT_ACK 0x7 /* PIM-DM only */ 103#define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */ 104#define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */ 105 106/* 107 * PIM-Register message flags 108 */ 109#define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */ 110#define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/ 111 112/* 113 * All-PIM-Routers IPv4 and IPv6 multicast addresses 114 */ 115#define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */ 116#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d" 117#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \ 118 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 119 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}} 120 121#endif /* _NETINET_PIM_H_ */ 122