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| Current File : //sys/netinet/pim.h |
/*-
* Copyright (c) 1996-2000
* University of Southern California/Information Sciences Institute.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/netinet/pim.h 139823 2005-01-07 01:45:51Z imp $
*/
#ifndef _NETINET_PIM_H_
#define _NETINET_PIM_H_
/*
* Protocol Independent Multicast (PIM) definitions.
* RFC 2362, June 1998.
*
* Written by Ahmed Helmy, USC/SGI, July 1996.
* Modified by George Edmond Eddy (Rusty), ISI, February 1998.
* Modified by Pavlin Radoslavov, USC/ISI, May 1998, October 2000.
*/
#include <sys/types.h>
#ifndef _PIM_VT
#ifndef BYTE_ORDER
# error BYTE_ORDER is not defined!
#endif
#if (BYTE_ORDER != BIG_ENDIAN) && (BYTE_ORDER != LITTLE_ENDIAN)
# error BYTE_ORDER must be defined to either BIG_ENDIAN or LITTLE_ENDIAN
#endif
#endif /* ! _PIM_VT */
/*
* PIM packet header
*/
struct pim {
#ifdef _PIM_VT
uint8_t pim_vt; /* PIM version and message type */
#else /* ! _PIM_VT */
#if BYTE_ORDER == BIG_ENDIAN
u_int pim_vers:4, /* PIM protocol version */
pim_type:4; /* PIM message type */
#endif
#if BYTE_ORDER == LITTLE_ENDIAN
u_int pim_type:4, /* PIM message type */
pim_vers:4; /* PIM protocol version */
#endif
#endif /* ! _PIM_VT */
uint8_t pim_reserved; /* Reserved */
uint16_t pim_cksum; /* IP-style checksum */
};
/* KAME-related name backward compatibility */
#define pim_ver pim_vers
#define pim_rsv pim_reserved
#ifdef _PIM_VT
#define PIM_MAKE_VT(v, t) (0xff & (((v) << 4) | (0x0f & (t))))
#define PIM_VT_V(x) (((x) >> 4) & 0x0f)
#define PIM_VT_T(x) ((x) & 0x0f)
#endif /* _PIM_VT */
#define PIM_VERSION 2
#define PIM_MINLEN 8 /* PIM message min. length */
#define PIM_REG_MINLEN (PIM_MINLEN+20) /* PIM Register hdr + inner IPv4 hdr */
#define PIM6_REG_MINLEN (PIM_MINLEN+40) /* PIM Register hdr + inner IPv6 hdr */
/*
* PIM message types
*/
#define PIM_HELLO 0x0 /* PIM-SM and PIM-DM */
#define PIM_REGISTER 0x1 /* PIM-SM only */
#define PIM_REGISTER_STOP 0x2 /* PIM-SM only */
#define PIM_JOIN_PRUNE 0x3 /* PIM-SM and PIM-DM */
#define PIM_BOOTSTRAP 0x4 /* PIM-SM only */
#define PIM_ASSERT 0x5 /* PIM-SM and PIM-DM */
#define PIM_GRAFT 0x6 /* PIM-DM only */
#define PIM_GRAFT_ACK 0x7 /* PIM-DM only */
#define PIM_CAND_RP_ADV 0x8 /* PIM-SM only */
#define PIM_ALL_DF_ELECTION 0xa /* Bidir-PIM-SM only */
/*
* PIM-Register message flags
*/
#define PIM_BORDER_REGISTER 0x80000000U /* The Border bit (host-order) */
#define PIM_NULL_REGISTER 0x40000000U /* The Null-Register bit (host-order)*/
/*
* All-PIM-Routers IPv4 and IPv6 multicast addresses
*/
#define INADDR_ALLPIM_ROUTERS_GROUP (uint32_t)0xe000000dU /* 224.0.0.13 */
#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS "ff02::d"
#define IN6ADDR_LINKLOCAL_ALLPIM_ROUTERS_INIT \
{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d }}}
#endif /* _NETINET_PIM_H_ */