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Annotation of sys/netinet/igmp.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: igmp.h,v 1.6 2003/06/02 23:28:13 millert Exp $        */
        !             2: /*     $NetBSD: igmp.h,v 1.6 1995/05/31 06:08:21 mycroft Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1988 Stephen Deering.
        !             6:  * Copyright (c) 1992, 1993
        !             7:  *     The Regents of the University of California.  All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software contributed to Berkeley by
        !            10:  * Stephen Deering of Stanford University.
        !            11:  *
        !            12:  * Redistribution and use in source and binary forms, with or without
        !            13:  * modification, are permitted provided that the following conditions
        !            14:  * are met:
        !            15:  * 1. Redistributions of source code must retain the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer.
        !            17:  * 2. Redistributions in binary form must reproduce the above copyright
        !            18:  *    notice, this list of conditions and the following disclaimer in the
        !            19:  *    documentation and/or other materials provided with the distribution.
        !            20:  * 3. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)igmp.h      8.1 (Berkeley) 6/10/93
        !            37:  */
        !            38:
        !            39: #ifndef _NETINET_IGMP_H_
        !            40: #define _NETINET_IGMP_H_
        !            41:
        !            42: /*
        !            43:  * Internet Group Management Protocol (IGMP) definitions.
        !            44:  *
        !            45:  * MULTICAST 1.3
        !            46:  */
        !            47:
        !            48: /*
        !            49:  * IGMP packet format.
        !            50:  */
        !            51: struct igmp {
        !            52:        u_int8_t        igmp_type;      /* version & type of IGMP message  */
        !            53:        u_int8_t        igmp_code;      /* code for routing sub-messages   */
        !            54:        u_int16_t       igmp_cksum;     /* IP-style checksum               */
        !            55:        struct in_addr  igmp_group;     /* group address being reported    */
        !            56: };                                     /*  (zero for queries)             */
        !            57:
        !            58: #define        IGMP_MINLEN                  8
        !            59:
        !            60: #define        IGMP_HOST_MEMBERSHIP_QUERY      0x11  /* membership query      */
        !            61: #define        IGMP_v1_HOST_MEMBERSHIP_REPORT  0x12  /* v1 membership report  */
        !            62: #define        IGMP_DVMRP                      0x13  /* DVMRP routing message */
        !            63: #define        IGMP_PIM                        0x14  /* PIM routing message   */
        !            64: #define        IGMP_v2_HOST_MEMBERSHIP_REPORT  0x16  /* v2 membership report  */
        !            65: #define        IGMP_HOST_LEAVE_MESSAGE         0x17  /* leave-group message   */
        !            66: #define        IGMP_MTRACE_REPLY               0x1e  /* traceroute reply      */
        !            67: #define        IGMP_MTRACE_QUERY               0x1f  /* traceroute query      */
        !            68:
        !            69: #define        IGMP_MAX_HOST_REPORT_DELAY      10    /* max delay for response to */
        !            70:                                              /*  query (in seconds)       */
        !            71:
        !            72: #define        IGMP_TIMER_SCALE                10    /* denominator for igmp_timer */
        !            73:
        !            74: /*
        !            75:  * States for the IGMP v2 state table.
        !            76:  */
        !            77: #define        IGMP_DELAYING_MEMBER    1
        !            78: #define        IGMP_IDLE_MEMBER        2
        !            79: #define        IGMP_LAZY_MEMBER        3
        !            80: #define        IGMP_SLEEPING_MEMBER    4
        !            81: #define        IGMP_AWAKENING_MEMBER   5
        !            82:
        !            83: /*
        !            84:  * States for IGMP router version cache.
        !            85:  */
        !            86: #define        IGMP_v1_ROUTER          1
        !            87: #define        IGMP_v2_ROUTER          2
        !            88:
        !            89: /*
        !            90:  * Revert to v2 if we haven't heard from the router in this amount of time.
        !            91:  */
        !            92: #define        IGMP_AGE_THRESHOLD      540
        !            93:
        !            94: #ifdef _KERNEL
        !            95: void   rti_delete(struct ifnet *);
        !            96: #endif /* _KERNEL */
        !            97: #endif /* _NETINET_IGMP_H_ */