1 /* 2 * Copyright (c) 2010 Apple, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * Copyright (c) 1988 Stephen Deering. 30 * Copyright (c) 1992, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * This code is derived from software contributed to Berkeley by 34 * Stephen Deering of Stanford University. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 65 * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $ 66 */ 67 68 #ifndef _NETINET_IGMP_H_ 69 #define _NETINET_IGMP_H_ 70 #include <sys/appleapiopts.h> 71 72 #include <netinet/in.h> 73 #include <sys/types.h> 74 75 /* 76 * Internet Group Management Protocol (IGMP) definitions. 77 * 78 * Written by Steve Deering, Stanford, May 1988. 79 * 80 * MULTICAST Revision: 3.5.1.2 81 */ 82 83 /* Minimum length of any IGMP protocol message. */ 84 #define IGMP_MINLEN 8 85 86 /* 87 * IGMPv1/v2 query and host report format. 88 */ 89 struct igmp { 90 u_char igmp_type; /* version & type of IGMP message */ 91 u_char igmp_code; /* subtype for routing msgs */ 92 u_short igmp_cksum; /* IP-style checksum */ 93 struct in_addr igmp_group; /* group address being reported */ 94 }; /* (zero for queries) */ 95 96 /* 97 * IGMP v3 query format. 98 */ 99 struct igmpv3 { 100 u_char igmp_type; /* version & type of IGMP message */ 101 u_char igmp_code; /* subtype for routing msgs */ 102 u_short igmp_cksum; /* IP-style checksum */ 103 struct in_addr igmp_group; /* group address being reported */ 104 /* (zero for queries) */ 105 u_char igmp_misc; /* reserved/suppress/robustness */ 106 u_char igmp_qqi; /* querier's query interval */ 107 u_short igmp_numsrc; /* number of sources */ 108 /*struct in_addr igmp_sources[1];*/ /* source addresses */ 109 }; 110 #define IGMP_V3_QUERY_MINLEN 12 111 #define IGMP_V3_QUERY_MAX_SRCS 366 /* From RFC 3376, section 4.1.8 */ 112 #define IGMP_EXP(x) (((x) >> 4) & 0x07) 113 #define IGMP_MANT(x) ((x) & 0x0f) 114 #define IGMP_QRESV(x) (((x) >> 4) & 0x0f) 115 #define IGMP_SFLAG(x) (((x) >> 3) & 0x01) 116 #define IGMP_QRV(x) ((x) & 0x07) 117 118 struct igmp_grouprec { 119 u_char ig_type; /* record type */ 120 u_char ig_datalen; /* length of auxiliary data */ 121 u_short ig_numsrc; /* number of sources */ 122 struct in_addr ig_group; /* group address being reported */ 123 /*struct in_addr ig_sources[1];*/ /* source addresses */ 124 }; 125 #define IGMP_GRPREC_HDRLEN 8 126 127 /* 128 * IGMPv3 host membership report header. 129 */ 130 struct igmp_report { 131 u_char ir_type; /* IGMP_v3_HOST_MEMBERSHIP_REPORT */ 132 u_char ir_rsv1; /* must be zero */ 133 u_short ir_cksum; /* checksum */ 134 u_short ir_rsv2; /* must be zero */ 135 u_short ir_numgrps; /* number of group records */ 136 /*struct igmp_grouprec ir_groups[1];*/ /* group records */ 137 }; 138 #define IGMP_V3_REPORT_MINLEN 8 139 #define IGMP_V3_REPORT_MAXRECS 65535 140 141 /* 142 * Message types, including version number. 143 */ 144 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ 145 #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ 146 #define IGMP_DVMRP 0x13 /* DVMRP routing message */ 147 #define IGMP_PIM 0x14 /* PIMv1 message (historic) */ 148 #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ 149 #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* Leave-group message */ 150 #define IGMP_MTRACE_REPLY 0x1e /* mtrace(8) reply */ 151 #define IGMP_MTRACE_QUERY 0x1f /* mtrace(8) probe */ 152 #define IGMP_v3_HOST_MEMBERSHIP_REPORT 0x22 /* Ver. 3 membership report */ 153 154 /* 155 * IGMPv3 report modes. 156 */ 157 #define IGMP_DO_NOTHING 0 /* don't send a record */ 158 #define IGMP_MODE_IS_INCLUDE 1 /* MODE_IN */ 159 #define IGMP_MODE_IS_EXCLUDE 2 /* MODE_EX */ 160 #define IGMP_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */ 161 #define IGMP_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */ 162 #define IGMP_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */ 163 #define IGMP_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */ 164 165 /* 166 * IGMPv3 query types. 167 */ 168 #define IGMP_V3_GENERAL_QUERY 1 169 #define IGMP_V3_GROUP_QUERY 2 170 #define IGMP_V3_GROUP_SOURCE_QUERY 3 171 172 /* 173 * Maximum report interval for IGMP v1/v2 host membership reports [RFC 1112] 174 */ 175 #define IGMP_V1V2_MAX_RI 10 176 #define IGMP_MAX_HOST_REPORT_DELAY IGMP_V1V2_MAX_RI 177 178 /* 179 * IGMP_TIMER_SCALE denotes that the igmp code field specifies 180 * time in tenths of a second. 181 */ 182 #define IGMP_TIMER_SCALE 10 183 184 #endif /* _NETINET_IGMP_H_ */ 185