1 /* 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93 38 * $FreeBSD: src/sys/netinet/igmp_var.h,v 1.17 1999/12/29 04:40:59 peter Exp $ 39 * $DragonFly: src/sys/netinet/igmp_var.h,v 1.4 2004/06/03 18:30:03 joerg Exp $ 40 */ 41 42 #ifndef _NETINET_IGMP_VAR_H_ 43 #define _NETINET_IGMP_VAR_H_ 44 45 /* 46 * Internet Group Management Protocol (IGMP), 47 * implementation-specific definitions. 48 * 49 * Written by Steve Deering, Stanford, May 1988. 50 * 51 * MULTICAST Revision: 3.5.1.3 52 */ 53 54 struct igmpstat { 55 u_int igps_rcv_total; /* total IGMP messages received */ 56 u_int igps_rcv_tooshort; /* received with too few bytes */ 57 u_int igps_rcv_badsum; /* received with bad checksum */ 58 u_int igps_rcv_queries; /* received membership queries */ 59 u_int igps_rcv_badqueries; /* received invalid queries */ 60 u_int igps_rcv_reports; /* received membership reports */ 61 u_int igps_rcv_badreports; /* received invalid reports */ 62 u_int igps_rcv_ourreports; /* received reports for our groups */ 63 u_int igps_snd_reports; /* sent membership reports */ 64 }; 65 66 #ifdef _KERNEL 67 #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1) 68 69 /* 70 * States for IGMPv2's leave processing 71 */ 72 #define IGMP_OTHERMEMBER 0 73 #define IGMP_IREPORTEDLAST 1 74 75 /* 76 * We must remember what version the subnet's querier is. 77 * We conveniently use the IGMP message type for the proper 78 * membership report to keep this state. 79 */ 80 #define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT 81 #define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT 82 83 /* 84 * Revert to new router if we haven't heard from an old router in 85 * this amount of time. 86 */ 87 #define IGMP_AGE_THRESHOLD 540 88 89 void igmp_init (void); 90 void igmp_input (struct mbuf *, ...); 91 void igmp_joingroup (struct in_multi *); 92 void igmp_leavegroup (struct in_multi *); 93 void igmp_fasttimo (void); 94 void igmp_slowtimo (void); 95 96 SYSCTL_DECL(_net_inet_igmp); 97 98 #endif 99 100 /* 101 * Names for IGMP sysctl objects 102 */ 103 #define IGMPCTL_STATS 1 /* statistics (read-only) */ 104 #define IGMPCTL_MAXID 2 105 106 #define IGMPCTL_NAMES { \ 107 { 0, 0 }, \ 108 { "stats", CTLTYPE_STRUCT }, \ 109 } 110 #endif 111