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Annotation of kernel/bsd/netinet/igmp_var.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            26: /*
        !            27:  * Copyright (c) 1988 Stephen Deering.
        !            28:  * Copyright (c) 1992, 1993
        !            29:  *     The Regents of the University of California.  All rights reserved.
        !            30:  *
        !            31:  * This code is derived from software contributed to Berkeley by
        !            32:  * Stephen Deering of Stanford University.
        !            33:  *
        !            34:  * Redistribution and use in source and binary forms, with or without
        !            35:  * modification, are permitted provided that the following conditions
        !            36:  * are met:
        !            37:  * 1. Redistributions of source code must retain the above copyright
        !            38:  *    notice, this list of conditions and the following disclaimer.
        !            39:  * 2. Redistributions in binary form must reproduce the above copyright
        !            40:  *    notice, this list of conditions and the following disclaimer in the
        !            41:  *    documentation and/or other materials provided with the distribution.
        !            42:  * 3. All advertising materials mentioning features or use of this software
        !            43:  *    must display the following acknowledgement:
        !            44:  *     This product includes software developed by the University of
        !            45:  *     California, Berkeley and its contributors.
        !            46:  * 4. Neither the name of the University nor the names of its contributors
        !            47:  *    may be used to endorse or promote products derived from this software
        !            48:  *    without specific prior written permission.
        !            49:  *
        !            50:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            51:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            52:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            53:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            54:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            55:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            56:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            57:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            58:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            59:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            60:  * SUCH DAMAGE.
        !            61:  *
        !            62:  *     @(#)igmp_var.h  8.1 (Berkeley) 7/19/93
        !            63:  */
        !            64: 
        !            65: /*
        !            66:  * Internet Group Management Protocol (IGMP),
        !            67:  * implementation-specific definitions.
        !            68:  *
        !            69:  * Written by Steve Deering, Stanford, May 1988.
        !            70:  *
        !            71:  * MULTICAST 1.1
        !            72:  */
        !            73: 
        !            74: struct igmpstat {
        !            75:        u_long  igps_rcv_total;         /* total IGMP messages received */
        !            76:        u_long  igps_rcv_tooshort;      /* received with too few bytes */
        !            77:        u_long  igps_rcv_badsum;        /* received with bad checksum */
        !            78:        u_long  igps_rcv_queries;       /* received membership queries */
        !            79:        u_long  igps_rcv_badqueries;    /* received invalid queries */
        !            80:        u_long  igps_rcv_reports;       /* received membership reports */
        !            81:        u_long  igps_rcv_badreports;    /* received invalid reports */
        !            82:        u_long  igps_rcv_ourreports;    /* received reports for our groups */
        !            83:        u_long  igps_snd_reports;       /* sent membership reports */
        !            84: };
        !            85: 
        !            86: #ifdef _KERNEL
        !            87: extern struct igmpstat igmpstat;
        !            88: 
        !            89: /*
        !            90:  * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
        !            91:  * DELAY * countdown frequency).  We assume that the routine random()
        !            92:  * is defined somewhere (and that it returns a positive number).
        !            93:  */
        !            94: #define        IGMP_RANDOM_DELAY(multiaddr)                                    \
        !            95:        /* struct in_addr multiaddr; */                                 \
        !            96:        (random() % (IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ) + 1)
        !            97: 
        !            98: void   igmp_init __P((void));
        !            99: void   igmp_input __P((struct mbuf *, int));
        !           100: void   igmp_joingroup __P((struct in_multi *));
        !           101: void   igmp_leavegroup __P((struct in_multi *));
        !           102: void   igmp_fasttimo __P((void));
        !           103: #endif

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