107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
|
/* fddi.c
|
||
|
|
|
||
|
|
Packet assembly code, originally contributed by Archie Cobbs. */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1996-2000 Internet Software Consortium.
|
||
|
|
* 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 Internet Software Consortium 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 INTERNET SOFTWARE CONSORTIUM 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 INTERNET SOFTWARE CONSORTIUM 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.
|
||
|
|
*
|
||
|
|
* This software has been written for the Internet Software Consortium
|
||
|
|
* by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
|
||
|
|
* To learn more about the Internet Software Consortium, see
|
||
|
|
* ``http://www.isc.org/''. To learn more about Vixie Enterprises,
|
||
|
|
* see ``http://www.vix.com''. To learn more about Nominum, Inc., see
|
||
|
|
* ``http://www.nominum.com''.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef lint
|
||
|
|
static char copyright[] =
|
||
|
|
"$Id: fddi.c,v 1.1.1.1 2000/04/22 07:11:34 mellon Exp $ Copyright (c) 1996-2000 The Internet Software Consortium. All rights reserved.\n";
|
||
|
|
#endif /* not lint */
|
||
|
|
|
||
|
|
#include "dhcpd.h"
|
||
|
|
|
||
|
|
#if defined (DEC_FDDI)
|
||
|
|
#include <netinet/if_fddi.h>
|
||
|
|
#include <net/if_llc.h>
|
||
|
|
|
||
|
|
#if defined (PACKET_ASSEMBLY) || defined (PACKET_DECODING)
|
||
|
|
#include "includes/netinet/if_ether.h"
|
||
|
|
#endif /* PACKET_ASSEMBLY || PACKET_DECODING */
|
||
|
|
|
||
|
|
#if defined (PACKET_ASSEMBLY)
|
||
|
|
/* Assemble an hardware header... */
|
||
|
|
|
||
|
|
void assemble_fddi_header (interface, buf, bufix, to)
|
||
|
|
struct interface_info *interface;
|
||
|
|
unsigned char *buf;
|
||
|
|
unsigned *bufix;
|
||
|
|
struct hardware *to;
|
||
|
|
{
|
||
|
|
struct fddi_header fh;
|
||
|
|
struct llc lh;
|
||
|
|
|
||
|
|
if (to && to -> hlen == 7)
|
||
|
|
memcpy (fh.fddi_dhost, &to -> hbuf [1],
|
||
|
|
sizeof (fh.fddi_dhost));
|
||
|
|
memcpy (fh.fddi_shost,
|
||
|
|
&interface -> hw_address.hbuf [1], sizeof (fh.fddi_shost));
|
||
|
|
fh.fddi_fc = FDDIFC_LLC_ASYNC;
|
||
|
|
memcpy (&buf [*bufix], &fh, sizeof fh);
|
||
|
|
*bufix += sizeof fh;
|
||
|
|
|
||
|
|
lh.llc_dsap = LLC_SNAP_LSAP;
|
||
|
|
lh.llc_ssap = LLC_SNAP_LSAP;
|
||
|
|
lh.llc_un.type_snap.control = LLC_UI;
|
||
|
|
lh.llc_un.type_snap.ether_type = htons (ETHERTYPE_IP);
|
||
|
|
memcpy (&buf [*bufix], &lh, LLC_SNAP_LEN);
|
||
|
|
*bufix += LLC_SNAP_LEN;
|
||
|
|
}
|
||
|
|
#endif /* PACKET_ASSEMBLY */
|
||
|
|
|
||
|
|
#ifdef PACKET_DECODING
|
||
|
|
/* Decode a hardware header... */
|
||
|
|
|
||
|
|
ssize_t decode_fddi_header (interface, buf, bufix, from)
|
||
|
|
struct interface_info *interface;
|
||
|
|
unsigned char *buf;
|
||
|
|
unsigned bufix;
|
||
|
|
struct hardware *from;
|
||
|
|
{
|
||
|
|
struct fddi_header fh;
|
||
|
|
struct llc lh;
|
||
|
|
|
||
|
|
from -> hbuf [0] = HTYPE_FDDI;
|
||
|
|
memcpy (&from -> hbuf [1], fh.fddi_shost, sizeof fh.fddi_shost);
|
||
|
|
return FDDI_HEADER_SIZE + LLC_SNAP_LEN;
|
||
|
|
}
|
||
|
|
#endif /* PACKET_DECODING */
|
||
|
|
#endif /* DEC_FDDI */
|