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 | |