1 /* $OpenBSD: igmp_var.h,v 1.13 2017/04/14 20:46:31 bluhm Exp $ */ 2 /* $NetBSD: igmp_var.h,v 1.9 1996/02/13 23:41:31 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1988 Stephen Deering. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Stephen Deering of Stanford University. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)igmp_var.h 8.1 (Berkeley) 7/19/93 37 */ 38 39 #ifndef _NETINET_IGMP_VAR_H_ 40 #define _NETINET_IGMP_VAR_H_ 41 42 /* 43 * Internet Group Management Protocol (IGMP), 44 * implementation-specific definitions. 45 * 46 * Written by Steve Deering, Stanford, May 1988. 47 * Modified by Rosen Sharma, Stanford, Aug 1994. 48 * Modified by Bill Fenner, Xerox PARC, Feb 1995. 49 * 50 * MULTICAST 1.3 51 */ 52 53 struct igmpstat { 54 u_long igps_rcv_total; /* total IGMP messages received */ 55 u_long igps_rcv_tooshort; /* received with too few bytes */ 56 u_long igps_rcv_badsum; /* received with bad checksum */ 57 u_long igps_rcv_queries; /* received membership queries */ 58 u_long igps_rcv_badqueries; /* received invalid queries */ 59 u_long igps_rcv_reports; /* received membership reports */ 60 u_long igps_rcv_badreports; /* received invalid reports */ 61 u_long igps_rcv_ourreports; /* received reports for our groups */ 62 u_long igps_snd_reports; /* sent membership reports */ 63 }; 64 65 /* 66 * Names for IGMP sysctl objects 67 */ 68 #define IGMPCTL_STATS 1 /* IGMP statistics */ 69 #define IGMPCTL_MAXID 2 70 71 #define IGMPCTL_NAMES { \ 72 { 0, 0 }, \ 73 { "stats", CTLTYPE_STRUCT } \ 74 } 75 76 #define IGMPCTL_VARS { \ 77 NULL \ 78 } 79 80 #ifdef _KERNEL 81 82 #include <sys/percpu.h> 83 84 enum igmpstat_counters { 85 igps_rcv_total, /* total IGMP messages received */ 86 igps_rcv_tooshort, /* received with too few bytes */ 87 igps_rcv_badsum, /* received with bad checksum */ 88 igps_rcv_queries, /* received membership queries */ 89 igps_rcv_badqueries, /* received invalid queries */ 90 igps_rcv_reports, /* received membership reports */ 91 igps_rcv_badreports, /* received invalid reports */ 92 igps_rcv_ourreports, /* received reports for our groups */ 93 igps_snd_reports, /* sent membership reports */ 94 igps_ncounters 95 }; 96 97 extern struct cpumem *igmpcounters; 98 99 static inline void 100 igmpstat_inc(enum igmpstat_counters c) 101 { 102 counters_inc(igmpcounters, c); 103 } 104 105 /* 106 * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_ 107 * DELAY * countdown frequency). We assume that the routine random() 108 * is defined somewhere (and that it returns a positive number). 109 */ 110 #define IGMP_RANDOM_DELAY(X) (arc4random_uniform(X) + 1) 111 112 void igmp_init(void); 113 int igmp_input(struct mbuf **, int *, int, int); 114 void igmp_joingroup(struct in_multi *); 115 void igmp_leavegroup(struct in_multi *); 116 void igmp_fasttimo(void); 117 void igmp_slowtimo(void); 118 int igmp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 119 #endif /* _KERNEL */ 120 #endif /* _NETINET_IGMP_VAR_H_ */ 121