3 * Routines for TPKT dissection
5 * Copyright 2000, Philips Electronics N.V.
6 * Andreas Sikkema <andreas.sikkema@philips.com>
8 * $Id: packet-tpkt.h,v 1.4 2001/06/12 06:31:14 guy Exp $
10 * Ethereal - Network traffic analyzer
11 * By Gerald Combs <gerald@ethereal.com>
12 * Copyright 1998 Gerald Combs
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 * Check whether this could be a TPKT-encapsulated PDU.
32 gboolean is_tpkt( tvbuff_t *tvb, unsigned int* offset );
36 * Dissect the TPKT header; called from the TPKT dissector, as well as
37 * from dissectors such as the dissector for Q.931-over-TCP.
39 * Returns -1 if TPKT isn't enabled, otherwise returns the PDU length
40 * from the TPKT header.
42 * Sets "*offset" to the offset following the TPKT header.
44 int dissect_tpkt_header( tvbuff_t *tvb, unsigned int* offset,
45 packet_info *pinfo, proto_tree *tree );