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