Return to fddi.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / dhcp / common

Annotation of embedaddon/dhcp/common/fddi.c, revision 1.1.1.1

1.1       misho       1: /* fddi.c
                      2: 
                      3:    Packet assembly code, originally contributed by Archie Cobbs. */
                      4: 
                      5: /*
                      6:  * Copyright (c) 2004,2007,2009 by Internet Systems Consortium, Inc. ("ISC")
                      7:  * Copyright (c) 1996-2003 by Internet Software Consortium
                      8:  *
                      9:  * Permission to use, copy, modify, and distribute this software for any
                     10:  * purpose with or without fee is hereby granted, provided that the above
                     11:  * copyright notice and this permission notice appear in all copies.
                     12:  *
                     13:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
                     14:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     15:  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
                     16:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     17:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     18:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
                     19:  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     20:  *
                     21:  *   Internet Systems Consortium, Inc.
                     22:  *   950 Charter Street
                     23:  *   Redwood City, CA 94063
                     24:  *   <info@isc.org>
                     25:  *   https://www.isc.org/
                     26:  *
                     27:  * This software has been written for Internet Systems Consortium
                     28:  * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
                     29:  * To learn more about Internet Systems Consortium, see
                     30:  * ``https://www.isc.org/''.  To learn more about Vixie Enterprises,
                     31:  * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
                     32:  * ``http://www.nominum.com''.
                     33:  */
                     34: 
                     35: #include "dhcpd.h"
                     36: 
                     37: #if defined (DEC_FDDI)
                     38: #include <netinet/if_fddi.h>
                     39: #include <net/if_llc.h>
                     40: 
                     41: #if defined (PACKET_ASSEMBLY) || defined (PACKET_DECODING)
                     42: #include "includes/netinet/if_ether.h"
                     43: #endif /* PACKET_ASSEMBLY || PACKET_DECODING */
                     44: 
                     45: #if defined (PACKET_ASSEMBLY)
                     46: /* Assemble an hardware header... */
                     47: 
                     48: void assemble_fddi_header (interface, buf, bufix, to)
                     49:        struct interface_info *interface;
                     50:        unsigned char *buf;
                     51:        unsigned *bufix;
                     52:        struct hardware *to;
                     53: {
                     54:        struct fddi_header   fh;
                     55:        struct llc     lh;
                     56: 
                     57:        if (to && to -> hlen == 7)
                     58:                memcpy (fh.fddi_dhost, &to -> hbuf [1],
                     59:                        sizeof (fh.fddi_dhost));
                     60:        memcpy (fh.fddi_shost,
                     61:                &interface -> hw_address.hbuf [1], sizeof (fh.fddi_shost));
                     62:        fh.fddi_fc = FDDIFC_LLC_ASYNC;
                     63:        memcpy (&buf [*bufix], &fh, sizeof fh);
                     64:        *bufix += sizeof fh;
                     65: 
                     66:        lh.llc_dsap = LLC_SNAP_LSAP;
                     67:        lh.llc_ssap = LLC_SNAP_LSAP;
                     68:        lh.llc_un.type_snap.control = LLC_UI;
                     69:        lh.llc_un.type_snap.ether_type = htons (ETHERTYPE_IP);
                     70:        memcpy (&buf [*bufix], &lh, LLC_SNAP_LEN);
                     71:        *bufix += LLC_SNAP_LEN;
                     72: }
                     73: #endif /* PACKET_ASSEMBLY */
                     74: 
                     75: #ifdef PACKET_DECODING
                     76: /* Decode a hardware header... */
                     77: 
                     78: ssize_t decode_fddi_header (interface, buf, bufix, from)
                     79:      struct interface_info *interface;
                     80:      unsigned char *buf;
                     81:      unsigned bufix;
                     82:      struct hardware *from;
                     83: {
                     84:        struct fddi_header   fh;
                     85:        struct llc     lh;
                     86:        
                     87:        from -> hbuf [0] = HTYPE_FDDI;
                     88:        memcpy (&from -> hbuf [1], fh.fddi_shost, sizeof fh.fddi_shost);
                     89:        return FDDI_HEADER_SIZE + LLC_SNAP_LEN;
                     90: }
                     91: #endif /* PACKET_DECODING */
                     92: #endif /* DEC_FDDI */