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      1 /*	$NetBSD: igmp_var.h,v 1.27 2021/02/17 22:32:04 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Stephen Deering of Stanford University.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)igmp_var.h	8.1 (Berkeley) 7/19/93
     35  */
     36 
     37 /*
     38  * Copyright (c) 1988 Stephen Deering.
     39  *
     40  * This code is derived from software contributed to Berkeley by
     41  * Stephen Deering of Stanford University.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  * 3. All advertising materials mentioning features or use of this software
     52  *    must display the following acknowledgement:
     53  *	This product includes software developed by the University of
     54  *	California, Berkeley and its contributors.
     55  * 4. Neither the name of the University nor the names of its contributors
     56  *    may be used to endorse or promote products derived from this software
     57  *    without specific prior written permission.
     58  *
     59  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     69  * SUCH DAMAGE.
     70  *
     71  *	@(#)igmp_var.h	8.1 (Berkeley) 7/19/93
     72  */
     73 
     74 #ifndef _NETINET_IGMP_VAR_H_
     75 #define _NETINET_IGMP_VAR_H_
     76 
     77 /*
     78  * Internet Group Management Protocol (IGMP),
     79  * implementation-specific definitions.
     80  *
     81  * Written by Steve Deering, Stanford, May 1988.
     82  * Modified by Rosen Sharma, Stanford, Aug 1994.
     83  * Modified by Bill Fenner, Xerox PARC, Feb 1995.
     84  *
     85  * MULTICAST 1.3
     86  */
     87 
     88 #define	IGMP_STAT_RCV_TOTAL	1	/* total IGMP messages received */
     89 #define	IGMP_STAT_RCV_TOOSHORT	2	/* received with too few bytes */
     90 #define	IGMP_STAT_RCV_BADSUM	3	/* received with bad checksum */
     91 #define	IGMP_STAT_RCV_QUERIES	4	/* received membership queries */
     92 #define	IGMP_STAT_RCV_BADQUERIES 5	/* received invalid queries */
     93 #define	IGMP_STAT_RCV_REPORTS	6	/* received membership reports */
     94 #define	IGMP_STAT_RCV_BADREPORTS 7	/* received invalid reports */
     95 #define	IGMP_STAT_RCV_OURREPORTS 8	/* received reports for our groups */
     96 #define	IGMP_STAT_SND_REPORTS	9	/* sent membership reports */
     97 
     98 #define	IGMP_NSTATS		10
     99 
    100 #ifdef _KERNEL
    101 /*
    102  * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
    103  * DELAY * countdown frequency).  We assume that the routine random()
    104  * is defined somewhere (and that it returns a positive number).
    105  */
    106 #define	IGMP_RANDOM_DELAY(X)	(cprng_fast32() % (X) + 1)
    107 
    108 void	igmp_init(void);
    109 void	igmp_input(struct mbuf *, int, int);
    110 int	igmp_joingroup(struct in_multi *);
    111 void	igmp_leavegroup(struct in_multi *);
    112 void	igmp_fasttimo(void);
    113 void	igmp_slowtimo(void);
    114 void	igmp_purgeif(struct ifnet *);
    115 #endif /* _KERNEL */
    116 
    117 #endif /* !_NETINET_IGMP_VAR_H_ */
    118