sys/netinet/pim.h

   1 /*
   2  * Copyright (c) 1996-2000
   3  * University of Southern California/Information Sciences Institute.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the project nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  * $FreeBSD: src/sys/netinet/pim.h,v 1.1.2.1 2003/08/24 17:04:44 hsu Exp $
  31  * $DragonFly: src/sys/netinet/pim.h,v 1.4 2006/05/20 02:42:12 dillon Exp $
  32  */
  33
  34 #ifndef _NETINET_PIM_H_
  35 #define _NETINET_PIM_H_
  36
  37 /*
  38  * Protocol Independent Multicast (PIM) definitions.
  39  * RFC 2362, June 1998.
  40  *
  41  * Written by Ahmed Helmy, USC/SGI, July 1996.
  42  * Modified by George Edmond Eddy (Rusty), ISI, February 1998.
  43  * Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
  44  */
  45
  46 #ifndef _SYS_TYPES_H_
  47 #include <sys/types.h>
  48 #endif
  49 #ifndef _MACHINE_ENDIAN_H_
  50 #include <machine/endian.h>
  51 #endif
  52
  53
  54 /*
  55  * PIM packet header
  56  */
  57 struct pim {
  58 #ifdef _PIM_VT
  59         uint8_t         pim_vt;         /* PIM version and message type */
  60 #elif _BYTE_ORDER == _BIG_ENDIAN
  61         u_int           pim_vers:4,     /* PIM protocol version         */
  62                         pim_type:4;     /* PIM message type             */
  63 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  64         u_int           pim_type:4,     /* PIM message type             */
  65                         pim_vers:4;     /* PIM protocol version         */
  66 #else
  67 #error "Byte order not implemented"
  68 #endif
  69         uint8_t         pim_reserved;   /* Reserved                     */
  70         uint16_t        pim_cksum;      /* IP-style checksum            */
  71 };
  72 /* KAME-related name backward compatibility */
  73 #define pim_ver pim_vers
  74 #define pim_rsv pim_reserved
  75
  76 #ifdef _PIM_VT
  77 #define PIM_MAKE_VT(v, t)       (0xff & (((v) << 4) | (0x0f & (t))))
  78 #define PIM_VT_V(x)             (((x) >> 4) & 0x0f)
  79 #define PIM_VT_T(x)             ((x) & 0x0f)
  80 #endif /* _PIM_VT */
  81
  82 #define PIM_VERSION             2
  83 #define PIM_MINLEN              8       /* PIM message min. length      */
  84 #define PIM_REG_MINLEN  (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
  85 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
  86
  87 /*
  88  * PIM message types
  89  */
  90 #define PIM_HELLO               0x0     /* PIM-SM and PIM-DM            */
  91 #define PIM_REGISTER            0x1     /* PIM-SM only                  */
  92 #define PIM_REGISTER_STOP       0x2     /* PIM-SM only                  */
  93 #define PIM_JOIN_PRUNE          0x3     /* PIM-SM and PIM-DM            */
  94 #define PIM_BOOTSTRAP           0x4     /* PIM-SM only                  */
  95 #define PIM_ASSERT              0x5     /* PIM-SM and PIM-DM            */
  96 #define PIM_GRAFT               0x6     /* PIM-DM only                  */
  97 #define PIM_GRAFT_ACK           0x7     /* PIM-DM only                  */
  98 #define PIM_CAND_RP_ADV         0x8     /* PIM-SM only                  */
  99 #define PIM_ALL_DF_ELECTION     0xa     /* Bidir-PIM-SM only            */
 100
 101 /*
 102  * PIM-Register message flags
 103  */
 104 #define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order)  */
 105 #define PIM_NULL_REGISTER   0x40000000U /* The Null-Register bit (host-order)*/
 106
 107 /*
 108  * All-PIM-Routers IPv4 and IPv6 multicast addresses
 109  */
 110 #define INADDR_ALLPIM_ROUTERS_GROUP     (uint32_t)0xe000000dU  /* 224.0.0.13 */
 111 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS        "ff02::d"
 112 #define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT                           \
 113         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,             \
 114             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
 115
 116 #endif /* _NETINET_PIM_H_ */