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Add DEC-specific (or maybe not) FDDI support.

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Ted Lemon 2000-03-24 00:21:17 +00:00
parent dc309be4ab
commit 2cc8232d46
1 changed files with 102 additions and 0 deletions
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common/fddi.c Normal file
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/* 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 2000/03/24 00:21:17 mellon Exp $ Copyright (c) 1996-2000 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
#ifdef DEC_FDDI
#include <netinet/if_fddi.h>
#include <net/if_llc.h>
#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 = eh.ether_type;
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 */