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