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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright (c) 1988 Stephen Deering.
        !            24:  * Copyright (c) 1992, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  *
        !            27:  * This code is derived from software contributed to Berkeley by
        !            28:  * Stephen Deering of Stanford University.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *     This product includes software developed by the University of
        !            41:  *     California, Berkeley and its contributors.
        !            42:  * 4. Neither the name of the University nor the names of its contributors
        !            43:  *    may be used to endorse or promote products derived from this software
        !            44:  *    without specific prior written permission.
        !            45:  *
        !            46:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            47:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            48:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            49:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            50:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            51:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            52:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            53:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            54:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            55:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            56:  * SUCH DAMAGE.
        !            57:  *
        !            58:  *     from: @(#)igmp_var.h    8.1 (Berkeley) 7/19/93
        !            59:  */
        !            60: 
        !            61: #ifndef _NETINET_IGMP_VAR_H_
        !            62: #define _NETINET_IGMP_VAR_H_
        !            63: 
        !            64: /*
        !            65:  * Internet Group Management Protocol (IGMP),
        !            66:  * implementation-specific definitions.
        !            67:  *
        !            68:  * Written by Steve Deering, Stanford, May 1988.
        !            69:  *
        !            70:  * MULTICAST Revision: 3.5.1.3
        !            71:  */
        !            72: 
        !            73: struct igmpstat {
        !            74:        u_int   igps_rcv_total;         /* total IGMP messages received */
        !            75:        u_int   igps_rcv_tooshort;      /* received with too few bytes */
        !            76:        u_int   igps_rcv_badsum;        /* received with bad checksum */
        !            77:        u_int   igps_rcv_queries;       /* received membership queries */
        !            78:        u_int   igps_rcv_badqueries;    /* received invalid queries */
        !            79:        u_int   igps_rcv_reports;       /* received membership reports */
        !            80:        u_int   igps_rcv_badreports;    /* received invalid reports */
        !            81:        u_int   igps_rcv_ourreports;    /* received reports for our groups */
        !            82:        u_int   igps_snd_reports;       /* sent membership reports */
        !            83: };
        !            84: 
        !            85: #ifdef KERNEL
        !            86: #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
        !            87: 
        !            88: /*
        !            89:  * States for IGMPv2's leave processing
        !            90:  */
        !            91: #define IGMP_OTHERMEMBER                       0
        !            92: #define IGMP_IREPORTEDLAST                     1
        !            93: 
        !            94: /*
        !            95:  * We must remember what version the subnet's querier is.
        !            96:  * We conveniently use the IGMP message type for the proper
        !            97:  * membership report to keep this state.
        !            98:  */
        !            99: #define IGMP_V1_ROUTER                         IGMP_V1_MEMBERSHIP_REPORT
        !           100: #define IGMP_V2_ROUTER                         IGMP_V2_MEMBERSHIP_REPORT
        !           101: 
        !           102: /*
        !           103:  * Revert to new router if we haven't heard from an old router in
        !           104:  * this amount of time.
        !           105:  */
        !           106: #define IGMP_AGE_THRESHOLD                     540
        !           107: 
        !           108: void   igmp_init __P((void));
        !           109: void   igmp_input __P((struct mbuf *, int));
        !           110: void   igmp_joingroup __P((struct in_multi *));
        !           111: void   igmp_leavegroup __P((struct in_multi *));
        !           112: void   igmp_fasttimo __P((void));
        !           113: void   igmp_slowtimo __P((void));
        !           114: 
        !           115: SYSCTL_DECL(_net_inet_igmp);
        !           116: 
        !           117: #endif
        !           118: 
        !           119: /*
        !           120:  * Names for IGMP sysctl objects
        !           121:  */
        !           122: #define IGMPCTL_STATS          1       /* statistics (read-only) */
        !           123: #define IGMPCTL_MAXID          2
        !           124: 
        !           125: #define IGMPCTL_NAMES { \
        !           126:        { 0, 0 }, \
        !           127:        { "stats", CTLTYPE_STRUCT }, \
        !           128: }
        !           129: 
        !           130: #endif
        !           131: 
        !           132: 

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