1 /* 2 * Copyright (c) 2010 Apple Computer, 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) 2009 Bruce Simpson. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 3. The name of the author may not be used to endorse or promote 40 * products derived from this software without specific prior written 41 * permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * $FreeBSD$ 56 */ 57 58 #ifndef _NETINET6_MLD6_H_ 59 #define _NETINET6_MLD6_H_ 60 61 /* 62 * Multicast Listener Discovery (MLD) definitions. 63 */ 64 65 /* Minimum length of any MLD protocol message. */ 66 #define MLD_MINLEN sizeof(struct icmp6_hdr) 67 68 /* 69 * MLD v2 query format. 70 * See <netinet/icmp6.h> for struct mld_hdr 71 * (MLDv1 query and host report format). 72 */ 73 struct mldv2_query { 74 struct icmp6_hdr mld_icmp6_hdr; /* ICMPv6 header */ 75 struct in6_addr mld_addr; /* address being queried */ 76 uint8_t mld_misc; /* reserved/suppress/robustness */ 77 uint8_t mld_qqi; /* querier's query interval */ 78 uint16_t mld_numsrc; /* number of sources */ 79 /* followed by 1..numsrc source addresses */ 80 } __attribute__((__packed__)); 81 #define MLD_V2_QUERY_MINLEN sizeof(struct mldv2_query) 82 #define MLD_MRC_EXP(x) ((ntohs((x)) >> 12) & 0x0007) 83 #define MLD_MRC_MANT(x) (ntohs((x)) & 0x0fff) 84 #define MLD_QQIC_EXP(x) (((x) >> 4) & 0x07) 85 #define MLD_QQIC_MANT(x) ((x) & 0x0f) 86 #define MLD_QRESV(x) (((x) >> 4) & 0x0f) 87 #define MLD_SFLAG(x) (((x) >> 3) & 0x01) 88 #define MLD_QRV(x) ((x) & 0x07) 89 90 /* 91 * MLDv2 host membership report header. 92 * mld_type: MLDV2_LISTENER_REPORT 93 */ 94 struct mldv2_report { 95 struct icmp6_hdr mld_icmp6_hdr; 96 /* followed by 1..numgrps records */ 97 } __attribute__((__packed__)); 98 /* overlaid on struct icmp6_hdr. */ 99 #define mld_numrecs mld_icmp6_hdr.icmp6_data16[1] 100 101 struct mldv2_record { 102 uint8_t mr_type; /* record type */ 103 uint8_t mr_datalen; /* length of auxiliary data */ 104 uint16_t mr_numsrc; /* number of sources */ 105 struct in6_addr mr_addr; /* address being reported */ 106 /* followed by 1..numsrc source addresses */ 107 } __attribute__((__packed__)); 108 #define MLD_V2_REPORT_MAXRECS 65535 109 110 /* 111 * MLDv2 report modes. 112 */ 113 #define MLD_DO_NOTHING 0 /* don't send a record */ 114 #define MLD_MODE_IS_INCLUDE 1 /* MODE_IN */ 115 #define MLD_MODE_IS_EXCLUDE 2 /* MODE_EX */ 116 #define MLD_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */ 117 #define MLD_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */ 118 #define MLD_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */ 119 #define MLD_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */ 120 121 /* 122 * MLDv2 query types. 123 */ 124 #define MLD_V2_GENERAL_QUERY 1 125 #define MLD_V2_GROUP_QUERY 2 126 #define MLD_V2_GROUP_SOURCE_QUERY 3 127 128 /* 129 * Maximum report interval for MLDv1 host membership reports. 130 */ 131 #define MLD_V1_MAX_RI 10 132 133 /* 134 * MLD_TIMER_SCALE denotes that the MLD code field specifies 135 * time in milliseconds. 136 */ 137 #define MLD_TIMER_SCALE 1000 138 139 #endif /* _NETINET6_MLD6_H_ */ 140