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/* fddi.c
Packet assembly code, originally contributed by Archie Cobbs. */
/*
* Copyright (c) 2004,2007 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-2003 by Internet Software Consortium
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Internet Systems Consortium, Inc.
* 950 Charter Street
* Redwood City, CA 94063
* <info@isc.org>
* https://www.isc.org/
*
* This software has been written for Internet Systems Consortium
* by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
* To learn more about Internet Systems Consortium, see
* ``https://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''.
*/
#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 */
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