| 1 | /* $NetBSD: igmp.h,v 1.12 2014/05/29 23:02:48 rmind Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1992, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Stephen Deering of Stanford University. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
| 35 | */ |
| 36 | |
| 37 | /* |
| 38 | * Copyright (c) 1988 Stephen Deering. |
| 39 | * |
| 40 | * This code is derived from software contributed to Berkeley by |
| 41 | * Stephen Deering of Stanford University. |
| 42 | * |
| 43 | * Redistribution and use in source and binary forms, with or without |
| 44 | * modification, are permitted provided that the following conditions |
| 45 | * are met: |
| 46 | * 1. Redistributions of source code must retain the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer. |
| 48 | * 2. Redistributions in binary form must reproduce the above copyright |
| 49 | * notice, this list of conditions and the following disclaimer in the |
| 50 | * documentation and/or other materials provided with the distribution. |
| 51 | * 3. All advertising materials mentioning features or use of this software |
| 52 | * must display the following acknowledgement: |
| 53 | * This product includes software developed by the University of |
| 54 | * California, Berkeley and its contributors. |
| 55 | * 4. Neither the name of the University nor the names of its contributors |
| 56 | * may be used to endorse or promote products derived from this software |
| 57 | * without specific prior written permission. |
| 58 | * |
| 59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 69 | * SUCH DAMAGE. |
| 70 | * |
| 71 | * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
| 72 | */ |
| 73 | |
| 74 | #ifndef _NETINET_IGMP_H_ |
| 75 | #define _NETINET_IGMP_H_ |
| 76 | |
| 77 | /* |
| 78 | * Internet Group Management Protocol (IGMP) definitions. |
| 79 | * |
| 80 | * MULTICAST 1.3 |
| 81 | */ |
| 82 | |
| 83 | /* |
| 84 | * IGMP packet format. |
| 85 | */ |
| 86 | struct igmp { |
| 87 | uint8_t igmp_type; /* version & type of IGMP message */ |
| 88 | uint8_t igmp_code; /* code for routing sub-messages */ |
| 89 | uint16_t igmp_cksum; /* IP-style checksum */ |
| 90 | struct in_addr igmp_group; /* group address being reported */ |
| 91 | } __packed; /* (zero for queries) */ |
| 92 | |
| 93 | #define IGMP_MINLEN 8 |
| 94 | |
| 95 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ |
| 96 | #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* v1 membership report */ |
| 97 | #define IGMP_DVMRP 0x13 /* DVMRP routing message */ |
| 98 | #define IGMP_PIM 0x14 /* PIM routing message */ |
| 99 | #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* v2 membership report */ |
| 100 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* leave-group message */ |
| 101 | #define IGMP_MTRACE_REPLY 0x1e /* traceroute reply */ |
| 102 | #define IGMP_MTRACE_QUERY 0x1f /* traceroute query */ |
| 103 | |
| 104 | #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ |
| 105 | /* query (in seconds) */ |
| 106 | |
| 107 | #define IGMP_TIMER_SCALE 10 /* denominator for igmp_timer */ |
| 108 | |
| 109 | /* |
| 110 | * States for the IGMP v2 state table. |
| 111 | */ |
| 112 | #define IGMP_DELAYING_MEMBER 1 |
| 113 | #define IGMP_IDLE_MEMBER 2 |
| 114 | #define IGMP_LAZY_MEMBER 3 |
| 115 | #define IGMP_SLEEPING_MEMBER 4 |
| 116 | #define IGMP_AWAKENING_MEMBER 5 |
| 117 | |
| 118 | /* |
| 119 | * States for IGMP router version cache. |
| 120 | */ |
| 121 | #define IGMP_v1_ROUTER 1 |
| 122 | #define IGMP_v2_ROUTER 2 |
| 123 | |
| 124 | /* |
| 125 | * Revert to v2 if we haven't heard from the router in this amount of time. |
| 126 | */ |
| 127 | #define IGMP_AGE_THRESHOLD 540 |
| 128 | |
| 129 | #endif /* !_NETINET_IGMP_H_ */ |
| 130 | |