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/* 73 * Internet Group Management Protocol (IGMP) definitions. 74 * 75 * Written by Steve Deering, Stanford, May 1988. 76 * 77 * MULTICAST Revision: 3.5.1.2 78 */ 79 80/* Minimum length of any IGMP protocol message. */ 81#define IGMP_MINLEN 8 82 83/* 84 * IGMPv1/v2 query and host report format. 85 */ 86struct igmp { 87 u_char igmp_type; /* version & type of IGMP message */ 88 u_char igmp_code; /* subtype for routing msgs */ 89 u_short igmp_cksum; /* IP-style checksum */ 90 struct in_addr igmp_group; /* group address being reported */ 91}; /* (zero for queries) */ 92 93/* 94 * IGMP v3 query format. 95 */ 96struct igmpv3 { 97 u_char igmp_type; /* version & type of IGMP message */ 98 u_char igmp_code; /* subtype for routing msgs */ 99 u_short igmp_cksum; /* IP-style checksum */ 100 struct in_addr igmp_group; /* group address being reported */ 101 /* (zero for queries) */ 102 u_char igmp_misc; /* reserved/suppress/robustness */ 103 u_char igmp_qqi; /* querier's query interval */ 104 u_short igmp_numsrc; /* number of sources */ 105 /*struct in_addr igmp_sources[1];*/ /* source addresses */ 106}; 107#define IGMP_V3_QUERY_MINLEN 12 108#define IGMP_EXP(x) (((x) >> 4) & 0x07) 109#define IGMP_MANT(x) ((x) & 0x0f) 110#define IGMP_QRESV(x) (((x) >> 4) & 0x0f) 111#define IGMP_SFLAG(x) (((x) >> 3) & 0x01) 112#define IGMP_QRV(x) ((x) & 0x07) 113 114struct igmp_grouprec { 115 u_char ig_type; /* record type */ 116 u_char ig_datalen; /* length of auxiliary data */ 117 u_short ig_numsrc; /* number of sources */ 118 struct in_addr ig_group; /* group address being reported */ 119 /*struct in_addr ig_sources[1];*/ /* source addresses */ 120}; 121#define IGMP_GRPREC_HDRLEN 8 122 123/* 124 * IGMPv3 host membership report header. 125 */ 126struct igmp_report { 127 u_char ir_type; /* IGMP_v3_HOST_MEMBERSHIP_REPORT */ 128 u_char ir_rsv1; /* must be zero */ 129 u_short ir_cksum; /* checksum */ 130 u_short ir_rsv2; /* must be zero */ 131 u_short ir_numgrps; /* number of group records */ 132 /*struct igmp_grouprec ir_groups[1];*/ /* group records */ 133}; 134#define IGMP_V3_REPORT_MINLEN 8 135#define IGMP_V3_REPORT_MAXRECS 65535 136 137/* 138 * Message types, including version number. 139 */ 140#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ 141#define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ 142#define IGMP_DVMRP 0x13 /* DVMRP routing message */ 143#define IGMP_PIM 0x14 /* PIMv1 message (historic) */ 144#define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ 145#define IGMP_HOST_LEAVE_MESSAGE 0x17 /* Leave-group message */ 146#define IGMP_MTRACE_REPLY 0x1e /* mtrace(8) reply */ 147#define IGMP_MTRACE_QUERY 0x1f /* mtrace(8) probe */ 148#define IGMP_v3_HOST_MEMBERSHIP_REPORT 0x22 /* Ver. 3 membership report */ 149 150/* 151 * IGMPv3 report modes. 152 */ 153#define IGMP_DO_NOTHING 0 /* don't send a record */ 154#define IGMP_MODE_IS_INCLUDE 1 /* MODE_IN */ 155#define IGMP_MODE_IS_EXCLUDE 2 /* MODE_EX */ 156#define IGMP_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */ 157#define IGMP_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */ 158#define IGMP_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */ 159#define IGMP_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */ 160 161/* 162 * IGMPv3 query types. 163 */ 164#define IGMP_V3_GENERAL_QUERY 1 165#define IGMP_V3_GROUP_QUERY 2 166#define IGMP_V3_GROUP_SOURCE_QUERY 3 167 168/* 169 * Maximum report interval for IGMP v1/v2 host membership reports [RFC 1112] 170 */ 171#define IGMP_V1V2_MAX_RI 10 172#define IGMP_MAX_HOST_REPORT_DELAY IGMP_V1V2_MAX_RI 173 174/* 175 * IGMP_TIMER_SCALE denotes that the igmp code field specifies 176 * time in tenths of a second. 177 */ 178#define IGMP_TIMER_SCALE 10 179 180#endif /* _NETINET_IGMP_H_ */ 181