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 1.6 2006/09/03 18:52:29 dillon Exp $ 40 */ 41 42 #ifndef _NETINET_IGMP_VAR_H_ 43 #define _NETINET_IGMP_VAR_H_ 44 45 #ifndef _SYS_TYPES_H_ 46 #include <sys/types.h> 47 #endif 48 49 #ifdef _KERNEL 50 51 #ifndef _SYS_SYSCTL_H_ 52 #include <sys/sysctl.h> 53 #endif 54 55 #endif 56 57 /* 58 * Internet Group Management Protocol (IGMP), 59 * implementation-specific definitions. 60 * 61 * Written by Steve Deering, Stanford, May 1988. 62 * 63 * MULTICAST Revision: 3.5.1.3 64 */ 65 66 struct igmpstat { 67 u_int igps_rcv_total; /* total IGMP messages received */ 68 u_int igps_rcv_tooshort; /* received with too few bytes */ 69 u_int igps_rcv_badsum; /* received with bad checksum */ 70 u_int igps_rcv_queries; /* received membership queries */ 71 u_int igps_rcv_badqueries; /* received invalid queries */ 72 u_int igps_rcv_reports; /* received membership reports */ 73 u_int igps_rcv_badreports; /* received invalid reports */ 74 u_int igps_rcv_ourreports; /* received reports for our groups */ 75 u_int igps_snd_reports; /* sent membership reports */ 76 }; 77 78 #ifdef _KERNEL 79 #define IGMP_RANDOM_DELAY(X) (krandom() % (X) + 1) 80 81 /* 82 * States for IGMPv2's leave processing 83 */ 84 #define IGMP_OTHERMEMBER 0 85 #define IGMP_IREPORTEDLAST 1 86 87 /* 88 * We must remember what version the subnet's querier is. 89 * We conveniently use the IGMP message type for the proper 90 * membership report to keep this state. 91 */ 92 #define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT 93 #define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT 94 95 /* 96 * Revert to new router if we haven't heard from an old router in 97 * this amount of time. 98 */ 99 #define IGMP_AGE_THRESHOLD 540 100 101 struct mbuf; 102 struct in_multi; 103 104 void igmp_init (void); 105 int igmp_input (struct mbuf **, int *, int); 106 void igmp_joingroup (struct in_multi *); 107 void igmp_leavegroup (struct in_multi *); 108 void igmp_fasttimo (void); 109 void igmp_slowtimo (void); 110 111 SYSCTL_DECL(_net_inet_igmp); 112 113 #endif 114 115 /* 116 * Names for IGMP sysctl objects 117 */ 118 #define IGMPCTL_STATS 1 /* statistics (read-only) */ 119 #define IGMPCTL_MAXID 2 120 121 #define IGMPCTL_NAMES { \ 122 { 0, 0 }, \ 123 { "stats", CTLTYPE_STRUCT }, \ 124 } 125 #endif 126