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Annotation of sys/netinet6/pim6.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: pim6.h,v 1.3 2005/12/10 01:30:14 deraadt Exp $        */
        !             2: /*     $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $  */
        !             3:
        !             4: /*
        !             5:  * Copyright (C) 1998 WIDE Project.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. Neither the name of the project nor the names of its contributors
        !            17:  *    may be used to endorse or promote products derived from this software
        !            18:  *    without specific prior written permission.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
        !            21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
        !            24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            30:  * SUCH DAMAGE.
        !            31:  */
        !            32: /*
        !            33:  * Protocol Independent Multicast (PIM) definitions
        !            34:  *
        !            35:  * Written by Ahmed Helmy, SGI, July 1996
        !            36:  *
        !            37:  * MULTICAST
        !            38:  */
        !            39:
        !            40: /*
        !            41:  * PIM packet header
        !            42:  */
        !            43: #define PIM_VERSION    2
        !            44: struct pim {
        !            45: #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
        !            46:        u_int   pim_type:4, /* the PIM message type, currently they are:
        !            47:                             * Hello, Register, Register-Stop, Join/Prune,
        !            48:                             * Bootstrap, Assert, Graft (PIM-DM only),
        !            49:                             * Graft-Ack (PIM-DM only), C-RP-Adv
        !            50:                             */
        !            51:                pim_ver:4;  /* PIM version number; 2 for PIMv2 */
        !            52: #else
        !            53:        u_int   pim_ver:4,      /* PIM version */
        !            54:                pim_type:4;     /* PIM type    */
        !            55: #endif
        !            56:        u_char  pim_rsv;        /* Reserved */
        !            57:        u_short pim_cksum;      /* IP style check sum */
        !            58: };
        !            59:
        !            60: #define PIM_MINLEN     8               /* The header min. length is 8    */
        !            61: #define PIM6_REG_MINLEN        (PIM_MINLEN+40) /* Register message + inner IP6 header */
        !            62:
        !            63: /*
        !            64:  * Message types
        !            65:  */
        !            66: #define PIM_REGISTER   1       /* PIM Register type is 1 */
        !            67:
        !            68: /* second bit in reg_head is the null bit */
        !            69: #define PIM_NULL_REGISTER 0x40000000