117 lines
4.2 KiB
C
117 lines
4.2 KiB
C
/* $OpenBSD: igmp_var.h,v 1.15 2022/03/28 16:31:26 bluhm Exp $ */
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/* $NetBSD: igmp_var.h,v 1.9 1996/02/13 23:41:31 christos Exp $ */
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/*
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* Copyright (c) 1988 Stephen Deering.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Stephen Deering of Stanford University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
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*/
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#ifndef _NETINET_IGMP_VAR_H_
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#define _NETINET_IGMP_VAR_H_
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/*
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* Internet Group Management Protocol (IGMP),
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* implementation-specific definitions.
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*
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* Written by Steve Deering, Stanford, May 1988.
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* Modified by Rosen Sharma, Stanford, Aug 1994.
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* Modified by Bill Fenner, Xerox PARC, Feb 1995.
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*
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* MULTICAST 1.3
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*/
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struct igmpstat {
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u_long igps_rcv_total; /* total IGMP messages received */
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u_long igps_rcv_tooshort; /* received with too few bytes */
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u_long igps_rcv_badsum; /* received with bad checksum */
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u_long igps_rcv_queries; /* received membership queries */
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u_long igps_rcv_badqueries; /* received invalid queries */
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u_long igps_rcv_reports; /* received membership reports */
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u_long igps_rcv_badreports; /* received invalid reports */
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u_long igps_rcv_ourreports; /* received reports for our groups */
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u_long igps_snd_reports; /* sent membership reports */
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};
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/*
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* Names for IGMP sysctl objects
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*/
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#define IGMPCTL_STATS 1 /* IGMP statistics */
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#define IGMPCTL_MAXID 2
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#define IGMPCTL_NAMES { \
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{ 0, 0 }, \
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{ "stats", CTLTYPE_STRUCT } \
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}
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#ifdef _KERNEL
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#include <sys/percpu.h>
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enum igmpstat_counters {
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igps_rcv_total, /* total IGMP messages received */
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igps_rcv_tooshort, /* received with too few bytes */
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igps_rcv_badsum, /* received with bad checksum */
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igps_rcv_queries, /* received membership queries */
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igps_rcv_badqueries, /* received invalid queries */
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igps_rcv_reports, /* received membership reports */
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igps_rcv_badreports, /* received invalid reports */
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igps_rcv_ourreports, /* received reports for our groups */
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igps_snd_reports, /* sent membership reports */
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igps_ncounters
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};
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extern struct cpumem *igmpcounters;
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static inline void
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igmpstat_inc(enum igmpstat_counters c)
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{
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counters_inc(igmpcounters, c);
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}
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/*
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* Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
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* DELAY * countdown frequency). We assume that the routine random()
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* is defined somewhere (and that it returns a positive number).
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*/
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#define IGMP_RANDOM_DELAY(X) (arc4random_uniform(X) + 1)
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void igmp_init(void);
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int igmp_input(struct mbuf **, int *, int, int);
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void igmp_joingroup(struct in_multi *, struct ifnet *);
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void igmp_leavegroup(struct in_multi *, struct ifnet *);
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void igmp_fasttimo(void);
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void igmp_slowtimo(void);
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int igmp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
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#endif /* _KERNEL */
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#endif /* _NETINET_IGMP_VAR_H_ */
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