sys/netinet/pim.h

   1 /*      $NetBSD: pim.h,v 1.1 2004/09/04 23:32:29 manu Exp $     */
   2
   3 /*
   4  * Copyright (c) 1996-2000
   5  * University of Southern California/Information Sciences Institute.
   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  * $FreeBSD: /repoman/r/ncvs/src/sys/netinet/pim.h,v 1.2 2004/03/08 07:45:32 hsu Exp $
  33  */
  34
  35 #ifndef _NETINET_PIM_H_
  36 #define _NETINET_PIM_H_
  37
  38 /*
  39  * Protocol Independent Multicast (PIM) definitions.
  40  * RFC 2362, June 1998.
  41  *
  42  * Written by Ahmed Helmy, USC/SGI, July 1996.
  43  * Modified by George Edmond Eddy (Rusty), ISI, February 1998.
  44  * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
  45  */
  46
  47 #include <sys/types.h>
  48
  49 #ifndef _PIM_VT
  50 #ifndef BYTE_ORDER
  51 # error BYTE_ORDER is not defined!
  52 #endif
  53 #if (BYTE_ORDER != BIG_ENDIAN) && (BYTE_ORDER != LITTLE_ENDIAN)
  54 # error BYTE_ORDER must be defined to either BIG_ENDIAN or LITTLE_ENDIAN
  55 #endif
  56 #endif /* ! _PIM_VT */
  57
  58 /*
  59  * PIM packet header
  60  */
  61 struct pim {
  62 #ifdef _PIM_VT
  63         uint8_t         pim_vt;         /* PIM version and message type */
  64 #else /* ! _PIM_VT   */
  65 #if BYTE_ORDER == BIG_ENDIAN
  66         u_int           pim_vers:4,     /* PIM protocol version         */
  67                         pim_type:4;     /* PIM message type             */
  68 #endif
  69 #if BYTE_ORDER == LITTLE_ENDIAN
  70         u_int           pim_type:4,     /* PIM message type             */
  71                         pim_vers:4;     /* PIM protocol version         */
  72 #endif
  73 #endif /* ! _PIM_VT  */
  74         uint8_t         pim_reserved;   /* Reserved                     */
  75         uint16_t        pim_cksum;      /* IP-style checksum            */
  76 };
  77 /* KAME-related name backward compatibility */
  78 #define pim_ver pim_vers
  79 #define pim_rsv pim_reserved
  80
  81 #ifdef _PIM_VT
  82 #define PIM_MAKE_VT(v, t)       (0xff & (((v) << 4) | (0x0f & (t))))
  83 #define PIM_VT_V(x)             (((x) >> 4) & 0x0f)
  84 #define PIM_VT_T(x)             ((x) & 0x0f)
  85 #endif /* _PIM_VT */
  86
  87 #define PIM_VERSION             2
  88 #define PIM_MINLEN              8       /* PIM message min. length      */
  89 #define PIM_REG_MINLEN  (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
  90 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
  91
  92 /*
  93  * PIM message types
  94  */
  95 #define PIM_HELLO               0x0     /* PIM-SM and PIM-DM            */
  96 #define PIM_REGISTER            0x1     /* PIM-SM only                  */
  97 #define PIM_REGISTER_STOP       0x2     /* PIM-SM only                  */
  98 #define PIM_JOIN_PRUNE          0x3     /* PIM-SM and PIM-DM            */
  99 #define PIM_BOOTSTRAP           0x4     /* PIM-SM only                  */
 100 #define PIM_ASSERT              0x5     /* PIM-SM and PIM-DM            */
 101 #define PIM_GRAFT               0x6     /* PIM-DM only                  */
 102 #define PIM_GRAFT_ACK           0x7     /* PIM-DM only                  */
 103 #define PIM_CAND_RP_ADV         0x8     /* PIM-SM only                  */
 104 #define PIM_ALL_DF_ELECTION     0xa     /* Bidir-PIM-SM only            */
 105
 106 /*
 107  * PIM-Register message flags
 108  */
 109 #define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order)  */
 110 #define PIM_NULL_REGISTER   0x40000000U /* The Null-Register bit (host-order)*/
 111
 112 /*
 113  * All-PIM-Routers IPv4 and IPv6 multicast addresses
 114  */
 115 #define INADDR_ALLPIM_ROUTERS_GROUP     (uint32_t)0xe000000dU  /* 224.0.0.13 */
 116 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS        "ff02::d"
 117 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT                           \
 118         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 119             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
 120
 121 #endif /* !_NETINET_PIM_H_ */