1998-10-10 03:32:20 +00:00
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/* packet-fddi.c
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* Routines for FDDI packet disassembly
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*
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* Laurent Deniel <deniel@worldnet.fr>
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*
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1998-10-10 18:23:43 +00:00
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* $Id: packet-fddi.c,v 1.2 1998/10/10 18:23:43 gerald Exp $
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1998-10-10 03:32:20 +00:00
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gtk/gtk.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "ethereal.h"
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#include "packet.h"
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#include "resolv.h"
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/* FDDI Frame Control values */
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#define FDDI_FC_VOID 0x00 /* Void frame */
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#define FDDI_FC_NRT 0x80 /* Nonrestricted token */
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#define FDDI_FC_RT 0xc0 /* Restricted token */
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#define FDDI_FC_MAC 0xc0 /* MAC frame */
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#define FDDI_FC_SMT 0x40 /* SMT frame */
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#define FDDI_FC_SMT_INFO 0x41 /* SMT Info */
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#define FDDI_FC_SMT_NSA 0x4F /* SMT Next station adrs */
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#define FDDI_FC_SMT_MIN FDDI_FC_SMT_INFO
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#define FDDI_FC_SMT_MAX FDDI_FC_SMT_NSA
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#define FDDI_FC_MAC_MIN 0xc1
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#define FDDI_FC_MAC_BEACON 0xc2 /* MAC Beacon frame */
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#define FDDI_FC_MAC_CLAIM 0xc3 /* MAC Claim frame */
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#define FDDI_FC_MAC_MAX 0xcf
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#define FDDI_FC_LLC_ASYNC 0x50 /* Async. LLC frame */
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#define FDDI_FC_LLC_ASYNC_MIN FDDI_FC_LLC_ASYNC
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#define FDDI_FC_LLC_ASYNC_DEF 0x54
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#define FDDI_FC_LLC_ASYNC_MAX 0x5f
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#define FDDI_FC_LLC_SYNC 0xd0 /* Sync. LLC frame */
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#define FDDI_FC_LLC_SYNC_MIN FDDI_FC_LLC_SYNC
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#define FDDI_FC_LLC_SYNC_MAX 0xd7
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#define FDDI_FC_IMP_ASYNC 0x60 /* Implementor Async. */
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#define FDDI_FC_IMP_ASYNC_MIN FDDI_FC_IMP_ASYNC
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#define FDDI_FC_IMP_ASYNC_MAX 0x6f
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#define FDDI_FC_IMP_SYNC 0xe0 /* Implementor Synch. */
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#define FDDI_HEADER_SIZE 13
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/* field positions */
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#define FDDI_P_FC 0
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#define FDDI_P_DHOST 1
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#define FDDI_P_SHOST 7
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void dissect_fddi(const u_char *pd, frame_data *fd, GtkTree *tree)
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{
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int offset = 0, fc;
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GtkWidget *fh_tree, *ti;
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if (fd->cap_len < FDDI_HEADER_SIZE) {
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dissect_data(pd, offset, fd, tree);
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return;
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}
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fc = (int) pd[FDDI_P_FC];
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if (fd->win_info[0]) {
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strcpy(fd->win_info[2], get_ether_name((u_char *)&pd[FDDI_P_DHOST]));
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strcpy(fd->win_info[1], get_ether_name((u_char *)&pd[FDDI_P_SHOST]));
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strcpy(fd->win_info[4], "FDDI");
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}
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if (tree) {
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ti = add_item_to_tree(GTK_WIDGET(tree), 0, offset,
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"FDDI %s (%d on wire, %d captured)",
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1998-10-10 18:23:43 +00:00
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(fc >= FDDI_FC_LLC_ASYNC_MIN && fc <= FDDI_FC_LLC_ASYNC_MAX) ?
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1998-10-10 03:32:20 +00:00
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"Async LLC" : "unsupported FC",
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fd->pkt_len, fd->cap_len);
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fh_tree = gtk_tree_new();
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add_subtree(ti, fh_tree, ETT_FDDI);
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add_item_to_tree(fh_tree, FDDI_P_FC, 1, "Frame Control: 0x%02x", fc);
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add_item_to_tree(fh_tree, FDDI_P_DHOST, 6, "Destination: %s (%s)",
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ether_to_str((guint8 *) &pd[FDDI_P_DHOST]),
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get_ether_name((u_char *) &pd[FDDI_P_DHOST]));
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add_item_to_tree(fh_tree, FDDI_P_SHOST, 6, "Source: %s (%s)",
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ether_to_str((guint8 *) &pd[FDDI_P_SHOST]),
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get_ether_name((u_char *)&pd[FDDI_P_SHOST]));
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}
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offset = FDDI_HEADER_SIZE;
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switch (fc) {
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/* From now, only 802.2 SNAP (Async. LCC frame) is supported */
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1998-10-10 18:23:43 +00:00
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case FDDI_FC_LLC_ASYNC + 0 :
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case FDDI_FC_LLC_ASYNC + 1 :
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case FDDI_FC_LLC_ASYNC + 2 :
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case FDDI_FC_LLC_ASYNC + 3 :
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case FDDI_FC_LLC_ASYNC + 4 :
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case FDDI_FC_LLC_ASYNC + 5 :
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case FDDI_FC_LLC_ASYNC + 6 :
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case FDDI_FC_LLC_ASYNC + 7 :
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case FDDI_FC_LLC_ASYNC + 8 :
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case FDDI_FC_LLC_ASYNC + 9 :
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case FDDI_FC_LLC_ASYNC + 10 :
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case FDDI_FC_LLC_ASYNC + 11 :
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case FDDI_FC_LLC_ASYNC + 12 :
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case FDDI_FC_LLC_ASYNC + 13 :
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case FDDI_FC_LLC_ASYNC + 14 :
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case FDDI_FC_LLC_ASYNC + 15 :
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1998-10-10 03:32:20 +00:00
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dissect_llc(pd, offset, fd, tree);
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return;
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default :
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dissect_data(pd, offset, fd, tree);
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return;
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} /* fc */
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} /* dissect_fddi */
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