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igmp_var.h revision 1.7 
      1 /*	$NetBSD: igmp_var.h,v 1.7 1995/03/26 20:32:22 jtc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 Stephen Deering.
      5  * Copyright (c) 1992, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * Stephen Deering of Stanford University.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	@(#)igmp_var.h	8.1 (Berkeley) 7/19/93
     40  */
     41 
     42 /*
     43  * Internet Group Management Protocol (IGMP),
     44  * implementation-specific definitions.
     45  *
     46  * Written by Steve Deering, Stanford, May 1988.
     47  *
     48  * MULTICAST 1.1
     49  */
     50 
     51 struct igmpstat {
     52 	u_long	igps_rcv_total;		/* total IGMP messages received */
     53 	u_long	igps_rcv_tooshort;	/* received with too few bytes */
     54 	u_long	igps_rcv_badsum;	/* received with bad checksum */
     55 	u_long	igps_rcv_queries;	/* received membership queries */
     56 	u_long	igps_rcv_badqueries;	/* received invalid queries */
     57 	u_long	igps_rcv_reports;	/* received membership reports */
     58 	u_long	igps_rcv_badreports;	/* received invalid reports */
     59 	u_long	igps_rcv_ourreports;	/* received reports for our groups */
     60 	u_long	igps_snd_reports;	/* sent membership reports */
     61 };
     62 
     63 #ifdef _KERNEL
     64 struct igmpstat igmpstat;
     65 
     66 /*
     67  * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
     68  * DELAY * countdown frequency).  We assume that the routine random()
     69  * is defined somewhere (and that it returns a positive number).
     70  */
     71 #define	IGMP_RANDOM_DELAY(multiaddr)					\
     72 	/* struct in_addr multiaddr; */					\
     73 	(random() % (IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ) + 1)
     74 
     75 void	igmp_init __P((void));
     76 void	igmp_input __P((struct mbuf *, int));
     77 void	igmp_joingroup __P((struct in_multi *));
     78 void	igmp_leavegroup __P((struct in_multi *));
     79 void	igmp_fasttimo __P((void));
     80 #endif
     81