1 /*-a 2 * Copyright (c) 1988 Stephen Deering. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Stephen Deering of Stanford University. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93 34 * $FreeBSD$ 35 */ 36 37 #ifndef _NETINET_IGMP_VAR_H_ 38 #define _NETINET_IGMP_VAR_H_ 39 40 /* 41 * Internet Group Management Protocol (IGMP), 42 * implementation-specific definitions. 43 * 44 * Written by Steve Deering, Stanford, May 1988. 45 * 46 * MULTICAST Revision: 3.5.1.3 47 */ 48 49 struct igmpstat { 50 u_int igps_rcv_total; /* total IGMP messages received */ 51 u_int igps_rcv_tooshort; /* received with too few bytes */ 52 u_int igps_rcv_badsum; /* received with bad checksum */ 53 u_int igps_rcv_queries; /* received membership queries */ 54 u_int igps_rcv_badqueries; /* received invalid queries */ 55 u_int igps_rcv_reports; /* received membership reports */ 56 u_int igps_rcv_badreports; /* received invalid reports */ 57 u_int igps_rcv_ourreports; /* received reports for our groups */ 58 u_int igps_snd_reports; /* sent membership reports */ 59 u_int igps_rcv_toolong; /* received with too many bytes */ 60 }; 61 62 #ifdef _KERNEL 63 #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1) 64 65 /* 66 * States for IGMPv2's leave processing 67 */ 68 #define IGMP_OTHERMEMBER 0 69 #define IGMP_IREPORTEDLAST 1 70 71 /* 72 * State masks for IGMPv3 73 */ 74 #define IGMP_V3_NONEXISTENT 0x01 75 #define IGMP_V3_OTHERMEMBER 0x02 76 #define IGMP_V3_IREPORTEDLAST 0x04 77 78 /* 79 * We must remember what version the subnet's querier is. 80 * We conveniently use the IGMP message type for the proper 81 * membership report to keep this state. 82 */ 83 #define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT 84 #define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT 85 #define IGMP_V3_ROUTER IGMP_V3_MEMBERSHIP_REPORT 86 87 /* 88 * Revert to new router if we haven't heard from an old router in 89 * this amount of time. 90 */ 91 #define IGMP_AGE_THRESHOLD 540 92 93 /* 94 * IGMPv3 protocol defaults 95 */ 96 #define IGMP_INIT_ROBVAR 2 /* Robustness */ 97 #define IGMP_MAX_ROBVAR 7 98 #define IGMP_INIT_QRYINT 125 /* Querier's Query interval */ 99 #define IGMP_MAX_QRYINT 255 100 #define IGMP_INIT_QRYRSP 10 /* Query Response interval */ 101 #define IGMP_DEF_QRYMRT 10 102 #define IGMP_UNSOL_INT 1 /* Unsolicited Report interval */ 103 104 /* 105 * IGMPv3 report types 106 */ 107 #define IGMP_REPORT_MODE_IN 1 /* mode-is-include */ 108 #define IGMP_REPORT_MODE_EX 2 /* mode-is-exclude */ 109 #define IGMP_REPORT_TO_IN 3 /* change-to-include */ 110 #define IGMP_REPORT_TO_EX 4 /* change-to-exclude */ 111 #define IGMP_REPORT_ALLOW_NEW 5 /* allow-new-sources */ 112 #define IGMP_REPORT_BLOCK_OLD 6 /* block-old-sources */ 113 114 /* 115 * Report types 116 */ 117 #define IGMP_MASK_CUR_STATE 0x01 /* Report current-state */ 118 #define IGMP_MASK_ALLOW_NEW 0x02 /* Report source as allow-new */ 119 #define IGMP_MASK_BLOCK_OLD 0x04 /* Report source as block-old */ 120 #define IGMP_MASK_TO_IN 0x08 /* Report source as to_in */ 121 #define IGMP_MASK_TO_EX 0x10 /* Report source as to_ex */ 122 #define IGMP_MASK_STATE_T1 0x20 /* State at T1 */ 123 #define IGMP_MASK_STATE_T2 0x40 /* State at T2 */ 124 #define IGMP_MASK_IF_STATE 0x80 /* Report current-state per interface */ 125 126 #define IGMP_MASK_STATE_TX (IGMP_MASK_STATE_T1 | IGMP_MASK_STATE_T2) 127 #define IGMP_MASK_PENDING (IGMP_MASK_CUR_STATE | \ 128 IGMP_MASK_ALLOW_NEW | \ 129 IGMP_MASK_BLOCK_OLD) 130 131 /* 132 * List identifiers 133 */ 134 #define IGMP_EXCLUDE_LIST 1 /* exclude list used to tag report */ 135 #define IGMP_INCLUDE_LIST 2 /* include list used to tag report */ 136 #define IGMP_RECORDED_LIST 3 /* recorded list used to tag report */ 137 138 void igmp_init(void); 139 void igmp_input(struct mbuf *, int); 140 void igmp_joingroup(struct in_multi *); 141 void igmp_leavegroup(struct in_multi *); 142 void igmp_fasttimo(void); 143 void igmp_slowtimo(void); 144 145 SYSCTL_DECL(_net_inet_igmp); 146 147 #endif 148 149 /* 150 * Names for IGMP sysctl objects 151 */ 152 #define IGMPCTL_STATS 1 /* statistics (read-only) */ 153 #define IGMPCTL_MAXID 2 154 155 #define IGMPCTL_NAMES { \ 156 { 0, 0 }, \ 157 { "stats", CTLTYPE_STRUCT } \ 158 } 159 #endif 160