1 /* 2 * Copyright (c) 1996-2000 3 * University of Southern California/Information Sciences Institute. 4 * All rights reserved. 5 * 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. 17 * 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. 29 * 30 * $FreeBSD: src/sys/netinet/pim.h,v 1.1.2.1 2003/08/24 17:04:44 hsu Exp $ 31 * $DragonFly: src/sys/netinet/pim.h,v 1.3 2004/09/23 16:44:32 joerg Exp $ 32 */ 33 34 #ifndef _NETINET_PIM_H_ 35 #define _NETINET_PIM_H_ 36 37 /* 38 * Protocol Independent Multicast (PIM) definitions. 39 * RFC 2362, June 1998. 40 * 41 * Written by Ahmed Helmy, USC/SGI, July 1996. 42 * Modified by George Edmond Eddy (Rusty), ISI, February 1998. 43 * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000. 44 */ 45 46 #include <sys/types.h> 47 48 /* 49 * PIM packet header 50 */ 51 struct pim { 52 #ifdef _PIM_VT 53 uint8_t pim_vt; /* PIM version and message type */ 54 #elif _BYTE_ORDER == _BIG_ENDIAN 55 u_int pim_vers:4, /* PIM protocol version */ 56 pim_type:4; /* PIM message type */ 57 #elif _BYTE_ORDER == _LITTLE_ENDIAN 58 u_int pim_type:4, /* PIM message type */ 59 pim_vers:4; /* PIM protocol version */ 60 #else 61 #error "Byte order not implemented" 62 #endif 63 uint8_t pim_reserved; /* Reserved */ 64 uint16_t pim_cksum; /* IP-style checksum */ 65 }; 66 /* KAME-related name backward compatibility */ 67 #define pim_ver pim_vers 68 #define pim_rsv pim_reserved 69 70 #ifdef _PIM_VT 71 #define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t)))) 72 #define PIM_VT_V(x) (((x) >> 4) & 0x0f) 73 #define PIM_VT_T(x) ((x) & 0x0f) 74 #endif /* _PIM_VT */ 75 76 #define PIM_VERSION 2 77 #define PIM_MINLEN 8 /* PIM message min. length */ 78 #define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */ 79 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */ 80 81 /* 82 * PIM message types 83 */ 84 #define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */ 85 #define PIM_REGISTER 0x1 /* PIM-SM only */ 86 #define PIM_REGISTER_STOP 0x2 /* PIM-SM only */ 87 #define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */ 88 #define PIM_BOOTSTRAP 0x4 /* PIM-SM only */ 89 #define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */ 90 #define PIM_GRAFT 0x6 /* PIM-DM only */ 91 #define PIM_GRAFT_ACK 0x7 /* PIM-DM only */ 92 #define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */ 93 #define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */ 94 95 /* 96 * PIM-Register message flags 97 */ 98 #define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */ 99 #define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/ 100 101 /* 102 * All-PIM-Routers IPv4 and IPv6 multicast addresses 103 */ 104 #define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */ 105 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d" 106 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \ 107 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 108 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}} 109 110 #endif /* _NETINET_PIM_H_ */ 111