2001-12-16 22:30:11 +00:00
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/* packet-m2tp.c
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* Routines for M2TP User Adaptation Layer dissection
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* M2TP - MTP2 Transparent Proxy - is a Radisys proprietary
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* protocol based on the IETF SIGTRAN standard
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*
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* Copyright 2001, Heinz Prantner <heinz.prantner[AT]radisys.com>
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2001-12-16 22:30:11 +00:00
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*
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2006-05-21 04:49:01 +00:00
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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2001-12-16 22:30:11 +00:00
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-m3ua.c
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* Thanks to Michael Tuexen for his valuable improvements
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2002-08-28 21:04:11 +00:00
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*
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2001-12-16 22:30:11 +00:00
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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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2002-08-28 21:04:11 +00:00
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*
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2001-12-16 22:30:11 +00:00
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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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2002-08-28 21:04:11 +00:00
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*
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2001-12-16 22:30:11 +00:00
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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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2012-06-28 23:18:38 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2001-12-16 22:30:11 +00:00
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*/
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2012-09-20 02:03:38 +00:00
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#include "config.h"
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2001-12-16 22:30:11 +00:00
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#include <glib.h>
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2002-01-21 07:37:49 +00:00
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#include <epan/packet.h>
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2005-09-17 00:02:31 +00:00
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#include <epan/sctpppids.h>
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2001-12-16 22:30:11 +00:00
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2013-12-15 23:44:12 +00:00
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void proto_register_m2tp(void);
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void proto_reg_handoff_m2tp(void);
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2001-12-16 22:30:11 +00:00
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#define SCTP_PORT_M2TP 9908 /* unassigned port number (not assigned by IANA) */
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#define VERSION_LENGTH 1
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#define RESERVED_LENGTH 1
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#define MESSAGE_CLASS_LENGTH 1
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#define MESSAGE_TYPE_LENGTH 1
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#define MESSAGE_LENGTH_LENGTH 4
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#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
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MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
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#define VERSION_OFFSET 0
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#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
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#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
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#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
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#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
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#define PARAMETER_TAG_LENGTH 2
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#define PARAMETER_LENGTH_LENGTH 2
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#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_TAG_OFFSET 0
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#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
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#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
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#define INTERFACE_IDENTIFIER_PARAMETER_TAG 1
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#define MASTER_SLAVE_INDICATOR_PARAMETER_TAG 2
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#define M2TP_USER_IDENTIFIER_PARAMETER_TAG 3
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#define INFO_PARAMETER_TAG 4
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#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 7
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#define HEARTBEAT_DATA_PARAMETER_TAG 9
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#define REASON_PARAMETER_TAG 10
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#define ERROR_CODE_PARAMETER_TAG 12
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#define PROTOCOL_DATA_PARAMETER_TAG 13
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static const value_string m2tp_parameter_tag_values[] = {
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{ INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier" },
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{ MASTER_SLAVE_INDICATOR_PARAMETER_TAG, "Master Slave Indicator" },
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{ M2TP_USER_IDENTIFIER_PARAMETER_TAG, "M2tp User Identifier" },
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{ INFO_PARAMETER_TAG, "Info" },
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{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic Information" },
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{ HEARTBEAT_DATA_PARAMETER_TAG, "Heartbeat Data" },
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{ REASON_PARAMETER_TAG, "Reason" },
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{ ERROR_CODE_PARAMETER_TAG, "Error Code" },
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{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol Data" },
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{ 0, NULL } };
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#define PROTOCOL_VERSION_RELEASE_1 1
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static const value_string m2tp_protocol_version_values[] = {
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{ PROTOCOL_VERSION_RELEASE_1, "Release 1" },
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{ 0, NULL } };
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#define MESSAGE_CLASS_MGMT_MESSAGE 0
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#define MESSAGE_CLASS_SGSM_MESSAGE 3
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#define MESSAGE_CLASS_MAUP_MESSAGE 6
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#define MESSAGE_CLASS_DATA_MESSAGE 255
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static const value_string m2tp_message_class_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE, "Management Messages" },
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{ MESSAGE_CLASS_SGSM_MESSAGE, "SG State Maintenance Messages" },
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{ MESSAGE_CLASS_MAUP_MESSAGE, "MTP2 User Adaptation Messages" },
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{ MESSAGE_CLASS_DATA_MESSAGE, "User Data Messages" },
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{ 0, NULL } };
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/* management messages */
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#define MESSAGE_TYPE_ERR 0
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/* sg state maintenance messages */
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#define MESSAGE_TYPE_UP 1
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#define MESSAGE_TYPE_DOWN 2
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#define MESSAGE_TYPE_BEAT 3
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#define MESSAGE_TYPE_UP_ACK 4
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#define MESSAGE_TYPE_DOWN_ACK 5
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#define MESSAGE_TYPE_BEAT_ACK 6
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/* mtp2 user message */
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#define MESSAGE_TYPE_DATA 1
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static const value_string m2tp_message_class_type_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error (ERR)" },
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{ MESSAGE_CLASS_DATA_MESSAGE * 256 + MESSAGE_TYPE_DATA, "Payload data (DATA)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up (UP)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down (DOWN)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat (BEAT)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack (UP ACK)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack (DOWN ACK)" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack (BEAT ACK)" },
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{ 0, NULL } };
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static const value_string m2tp_message_class_type_acro_values[] = {
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{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
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{ MESSAGE_CLASS_DATA_MESSAGE * 256 + MESSAGE_TYPE_DATA, "DATA" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
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{ MESSAGE_CLASS_SGSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
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{ 0, NULL } };
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#define HEARTBEAT_PERIOD_OFFSET PARAMETER_VALUE_OFFSET
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#define INTERFACE_IDENTIFIER_LENGTH 4
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#define INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
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#define M2TP_USER_LENGTH 4
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#define M2TP_USER_OFFSET PARAMETER_VALUE_OFFSET
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#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
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2002-08-28 21:04:11 +00:00
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2001-12-16 22:30:11 +00:00
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#define MASTER_SLAVE_LENGTH 4
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#define MASTER_SLAVE_OFFSET PARAMETER_VALUE_OFFSET
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#define REASON_LENGTH 4
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#define REASON_OFFSET PARAMETER_VALUE_OFFSET
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#define HEART_BEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
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#define ERROR_CODE_LENGTH 4
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#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
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2002-08-28 21:04:11 +00:00
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2001-12-16 22:30:11 +00:00
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#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
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#define BSN_OFFSET PARAMETER_VALUE_OFFSET
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#define FSN_OFFSET PARAMETER_VALUE_OFFSET+1
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#define M2TP_USER_MTP2 1
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#define M2TP_USER_Q921 2
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#define M2TP_USER_FRAME_RELAY 3
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static const value_string m2tp_user_identifier_values[] = {
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{ M2TP_USER_MTP2, "MTP2" },
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{ M2TP_USER_Q921, "Q.921" },
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{ M2TP_USER_FRAME_RELAY, "Frame Relay" },
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{ 0, NULL }};
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#define M2TP_MODE_MASTER 1
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#define M2TP_MODE_SLAVE 2
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static const value_string m2tp_mode_values[] = {
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{ M2TP_MODE_MASTER, "Master" },
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{ M2TP_MODE_SLAVE, "Slave" },
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{ 0, NULL}};
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2002-08-28 21:04:11 +00:00
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2001-12-16 22:30:11 +00:00
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#define M2TP_ERROR_CODE_INVALID_VERSION 1
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#define M2TP_ERROR_CODE_INVALID_INTERFACE_IDENTIFIER 2
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#define M2TP_ERROR_CODE_INVALID_ADAPTATION_LAYER_IDENTIFIER 3
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#define M2TP_ERROR_CODE_INVALID_MESSAGE_TYPE 4
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#define M2TP_ERROR_CODE_INVALID_TRAFFIC_HANDLING_MODE 5
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#define M2TP_ERROR_CODE_UNEXPECTED_MESSAGE 6
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#define M2TP_ERROR_CODE_PROTOCOL_ERROR 7
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#define M2TP_ERROR_CODE_INVALID_STREAM_IDENTIFIER 8
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#define M2TP_ERROR_CODE_INCOMPATIBLE_MASTER_SLAVE_CONFIGURATION 9
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static const value_string m2tp_error_code_values[] = {
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{ M2TP_ERROR_CODE_INVALID_VERSION, "Invalid Version" },
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{ M2TP_ERROR_CODE_INVALID_INTERFACE_IDENTIFIER, "Invalid Interface Identifier" },
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{ M2TP_ERROR_CODE_INVALID_ADAPTATION_LAYER_IDENTIFIER, "Invalid Adaptation Layer Identifier" },
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{ M2TP_ERROR_CODE_INVALID_MESSAGE_TYPE, "Invalid Message Type" },
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{ M2TP_ERROR_CODE_INVALID_TRAFFIC_HANDLING_MODE, "Invalid Traffic Handling Mode" },
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{ M2TP_ERROR_CODE_UNEXPECTED_MESSAGE, "Unexpected Message" },
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{ M2TP_ERROR_CODE_PROTOCOL_ERROR, "Protocol Error" },
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{ M2TP_ERROR_CODE_INVALID_STREAM_IDENTIFIER, "Invalid Stream Identified" },
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{ M2TP_ERROR_CODE_INCOMPATIBLE_MASTER_SLAVE_CONFIGURATION,"Incompatible Master Slave Configuration" },
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{ 0, NULL } };
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#define MANAGEMENT_ORDER_REASON_CODE 1
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#define MTP_RELEASE_REASON_CODE 2
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static const value_string m2tp_reason_code_values[] = {
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{ MANAGEMENT_ORDER_REASON_CODE, "Management Order" },
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{ MTP_RELEASE_REASON_CODE, "MTP Release" },
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{ 0, NULL } };
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2002-08-28 21:04:11 +00:00
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2001-12-16 22:30:11 +00:00
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/* Initialize the protocol and registered fields */
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static int proto_m2tp = -1;
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static int hf_m2tp_version = -1;
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static int hf_m2tp_reserved = -1;
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static int hf_m2tp_message_class = -1;
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static int hf_m2tp_message_type = -1;
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static int hf_m2tp_message_length = -1;
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static int hf_m2tp_parameter_tag = -1;
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static int hf_m2tp_parameter_length = -1;
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static int hf_m2tp_parameter_value = -1;
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static int hf_m2tp_parameter_padding = -1;
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static int hf_m2tp_interface_identifier = -1;
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static int hf_m2tp_user = -1;
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static int hf_m2tp_master_slave = -1;
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static int hf_m2tp_info_string = -1;
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static int hf_m2tp_heartbeat_data = -1;
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static int hf_m2tp_diagnostic_info = -1;
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static int hf_m2tp_error_code = -1;
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static int hf_m2tp_reason = -1;
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/* Initialize the subtree pointers */
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static gint ett_m2tp = -1;
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static gint ett_m2tp_parameter = -1;
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static dissector_handle_t mtp2_handle;
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2002-08-28 21:04:11 +00:00
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static guint
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2001-12-16 22:30:11 +00:00
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nr_of_padding_bytes (guint length)
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{
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guint remainder;
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remainder = length % 4;
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if (remainder == 0)
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return 0;
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else
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return 4 - remainder;
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}
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/* Common Header */
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static void
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dissect_m2tp_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m2tp_tree)
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{
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guint8 version, reserved, message_class, message_type;
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guint32 message_length;
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2002-08-28 21:04:11 +00:00
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2001-12-16 22:30:11 +00:00
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/* Extract the common header */
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version = tvb_get_guint8(common_header_tvb, VERSION_OFFSET);
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reserved = tvb_get_guint8(common_header_tvb, RESERVED_OFFSET);
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message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
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message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
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message_length = tvb_get_ntohl (common_header_tvb, MESSAGE_LENGTH_OFFSET);
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2013-06-14 17:49:53 +00:00
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(message_class * 256 + message_type, m2tp_message_class_type_acro_values, "reserved"));
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2001-12-16 22:30:11 +00:00
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if (m2tp_tree) {
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/* add the components of the common header to the protocol tree */
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proto_tree_add_uint(m2tp_tree, hf_m2tp_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, version);
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proto_tree_add_uint(m2tp_tree, hf_m2tp_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, reserved);
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proto_tree_add_uint(m2tp_tree, hf_m2tp_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, message_class);
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2013-09-16 10:39:06 +00:00
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proto_tree_add_uint_format_value(m2tp_tree, hf_m2tp_message_type,
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2001-12-16 22:30:11 +00:00
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common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH,
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2013-09-16 10:39:06 +00:00
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message_type, "%u (%s)",
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2012-08-10 22:55:02 +00:00
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message_type, val_to_str_const(message_class * 256 + message_type, m2tp_message_class_type_values, "reserved"));
|
2001-12-16 22:30:11 +00:00
|
|
|
proto_tree_add_uint(m2tp_tree, hf_m2tp_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, message_length);
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Interface Identifier */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint32 parameter_value;
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
parameter_value = tvb_get_ntohl(parameter_tvb, PARAMETER_VALUE_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_interface_identifier, parameter_tvb, INTERFACE_IDENTIFIER_OFFSET, INTERFACE_IDENTIFIER_LENGTH, parameter_value);
|
|
|
|
proto_item_set_text(parameter_item, "Interface Identifier (%u)", parameter_value);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Master Slave Indicator */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_master_slave_parameter (tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint32 parameter_value;
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
parameter_value = tvb_get_ntohl(parameter_tvb, PARAMETER_VALUE_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_master_slave, parameter_tvb, MASTER_SLAVE_OFFSET, MASTER_SLAVE_LENGTH, parameter_value);
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_item_set_text(parameter_item, "Master Slave Indicator (%s)", val_to_str_const(parameter_value, m2tp_mode_values, "unknown"));
|
2001-12-16 22:30:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* M2tp User Identifier */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_user_identifier_parameter (tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint32 parameter_value;
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
parameter_value = tvb_get_ntohl(parameter_tvb, PARAMETER_VALUE_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_user, parameter_tvb, M2TP_USER_OFFSET, M2TP_USER_LENGTH, parameter_value);
|
|
|
|
proto_item_set_text(parameter_item, "M2TP User Identifier (%u)", parameter_value);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Info String */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint16 length, info_string_length;
|
2002-12-02 23:43:30 +00:00
|
|
|
const char *info_string;
|
2001-12-16 22:30:11 +00:00
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
info_string_length = length - PARAMETER_HEADER_LENGTH;
|
2013-09-22 15:50:55 +00:00
|
|
|
info_string = tvb_get_string(wmem_packet_scope(), parameter_tvb, INFO_STRING_OFFSET, info_string_length);
|
2001-12-16 22:30:11 +00:00
|
|
|
proto_tree_add_string(parameter_tree, hf_m2tp_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, info_string);
|
|
|
|
proto_item_set_text(parameter_item, "Info String (%.*s)", info_string_length, info_string);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Diagnostic Information */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint16 length, diagnostic_info_length;
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
if (parameter_tree) {
|
2002-08-28 21:04:11 +00:00
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
2001-12-16 22:30:11 +00:00
|
|
|
diagnostic_info_length = length - PARAMETER_HEADER_LENGTH;
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(parameter_tree, hf_m2tp_diagnostic_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diagnostic_info_length, ENC_NA);
|
2001-12-16 22:30:11 +00:00
|
|
|
proto_item_set_text(parameter_item, "Diagnostic information (%u byte%s)", diagnostic_info_length, plurality(diagnostic_info_length, "", "s"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Heartbeat Data */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint16 length, heartbeat_data_length;
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
if (parameter_tree) {
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
heartbeat_data_length = length - PARAMETER_HEADER_LENGTH;
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(parameter_tree, hf_m2tp_heartbeat_data, parameter_tvb, PARAMETER_VALUE_OFFSET, heartbeat_data_length, ENC_NA);
|
2001-12-16 22:30:11 +00:00
|
|
|
proto_item_set_text(parameter_item, "Heartbeat data (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Reason Parameter */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint32 reason;
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
reason = tvb_get_ntohl(parameter_tvb, REASON_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_reason, parameter_tvb, REASON_OFFSET, REASON_LENGTH, reason);
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_item_set_text(parameter_item, "Reason parameter (%s)", val_to_str_const(reason, m2tp_reason_code_values, "unknown"));
|
2001-12-16 22:30:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Error Code */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint32 error_code;
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
error_code = tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, error_code);
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_item_set_text(parameter_item, "Error code parameter (%s)", val_to_str_const(error_code, m2tp_error_code_values, "unknown"));
|
2001-12-16 22:30:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Protocol Data */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, packet_info *pinfo, proto_item *m2tp_item, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint16 length, protocol_data_length, padding_length;
|
|
|
|
tvbuff_t *mtp2_tvb;
|
|
|
|
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
padding_length = nr_of_padding_bytes(length);
|
|
|
|
protocol_data_length = length - PARAMETER_HEADER_LENGTH;
|
|
|
|
|
|
|
|
mtp2_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, protocol_data_length, protocol_data_length);
|
|
|
|
call_dissector(mtp2_handle, mtp2_tvb, pinfo, tree);
|
|
|
|
|
|
|
|
if (parameter_tree) {
|
|
|
|
proto_item_set_text(parameter_item, "Protocol data (SS7 message)");
|
|
|
|
proto_item_set_len(parameter_item, proto_item_get_len(parameter_item) - protocol_data_length - padding_length);
|
|
|
|
proto_item_set_len(m2tp_item, proto_item_get_len(m2tp_item) - protocol_data_length - padding_length);
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Unknown Parameter */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
|
|
|
|
{
|
|
|
|
guint16 tag, length, parameter_value_length;
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
if (parameter_tree) {
|
|
|
|
tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
parameter_value_length = length - PARAMETER_HEADER_LENGTH;
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(parameter_tree, hf_m2tp_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
proto_item_set_text(parameter_item, "Parameter with tag %u and %u byte%s value", tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* M2TP Parameter */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *m2tp_tree, proto_item *m2tp_item, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint16 tag, length, padding_length, total_length;
|
|
|
|
proto_item *parameter_item = NULL;
|
|
|
|
proto_tree *parameter_tree = NULL;
|
|
|
|
|
|
|
|
/* extract tag and length from the parameter */
|
|
|
|
tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
|
|
|
|
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
|
|
|
|
|
|
|
|
/* calculate padding and total length */
|
|
|
|
padding_length = nr_of_padding_bytes(length);
|
|
|
|
total_length = length + padding_length;
|
|
|
|
|
|
|
|
if (tree) {
|
|
|
|
/* create proto_tree stuff */
|
|
|
|
parameter_item = proto_tree_add_text(m2tp_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, total_length, "Incomplete parameter");
|
|
|
|
parameter_tree = proto_item_add_subtree(parameter_item, ett_m2tp_parameter);
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
/* add tag and length to the m2tp tree */
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, tag);
|
|
|
|
proto_tree_add_uint(parameter_tree, hf_m2tp_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, length);
|
|
|
|
}
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
switch(tag) {
|
|
|
|
case INTERFACE_IDENTIFIER_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case MASTER_SLAVE_INDICATOR_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_master_slave_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case M2TP_USER_IDENTIFIER_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_user_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case INFO_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_info_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case HEARTBEAT_DATA_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case REASON_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case ERROR_CODE_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
case PROTOCOL_DATA_PARAMETER_TAG:
|
|
|
|
dissect_m2tp_protocol_data_parameter(parameter_tvb, parameter_tree, parameter_item, pinfo, m2tp_item, tree);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
dissect_m2tp_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
|
|
|
|
break;
|
|
|
|
};
|
|
|
|
|
|
|
|
if ((parameter_tree) && (padding_length > 0))
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(parameter_tree, hf_m2tp_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA);
|
2001-12-16 22:30:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* M2TP Message */
|
|
|
|
static void
|
|
|
|
dissect_m2tp_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_item *m2tp_item, proto_tree *m2tp_tree, proto_tree *tree)
|
|
|
|
{
|
|
|
|
gint offset, length, padding_length, total_length;
|
|
|
|
tvbuff_t *common_header_tvb, *parameter_tvb;
|
|
|
|
|
|
|
|
offset = 0;
|
|
|
|
|
|
|
|
/* extract and process the common header */
|
|
|
|
common_header_tvb = tvb_new_subset(message_tvb, offset, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
|
|
|
|
dissect_m2tp_common_header(common_header_tvb, pinfo, m2tp_tree);
|
|
|
|
offset += COMMON_HEADER_LENGTH;
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
/* extract zero or more parameters and process them individually */
|
2013-04-02 21:13:02 +00:00
|
|
|
while(tvb_reported_length_remaining(message_tvb, offset) > 0) {
|
2001-12-16 22:30:11 +00:00
|
|
|
length = tvb_get_ntohs(message_tvb, offset + PARAMETER_LENGTH_OFFSET);
|
|
|
|
padding_length = nr_of_padding_bytes(length);
|
|
|
|
total_length = length + padding_length;
|
|
|
|
/* create a tvb for the parameter including the padding bytes */
|
|
|
|
parameter_tvb = tvb_new_subset(message_tvb, offset, total_length, total_length);
|
2002-08-28 21:04:11 +00:00
|
|
|
dissect_m2tp_parameter(parameter_tvb, pinfo, m2tp_tree, m2tp_item, tree);
|
2001-12-16 22:30:11 +00:00
|
|
|
/* get rid of the handled parameter */
|
|
|
|
offset += total_length;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* M2tp */
|
|
|
|
static void
|
|
|
|
dissect_m2tp(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_item *m2tp_item;
|
|
|
|
proto_tree *m2tp_tree;
|
|
|
|
|
|
|
|
/* make entry in the Protocol column on summary display */
|
2009-08-09 06:26:46 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "M2TP");
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any work not
|
|
|
|
necessary to generate protocol tree items. */
|
|
|
|
if (tree) {
|
|
|
|
/* create the m2tp protocol tree */
|
2011-10-21 02:10:19 +00:00
|
|
|
m2tp_item = proto_tree_add_item(tree, proto_m2tp, message_tvb, 0, -1, ENC_NA);
|
2001-12-16 22:30:11 +00:00
|
|
|
m2tp_tree = proto_item_add_subtree(m2tp_item, ett_m2tp);
|
|
|
|
} else {
|
|
|
|
m2tp_item = NULL;
|
|
|
|
m2tp_tree = NULL;
|
|
|
|
};
|
|
|
|
/* dissect the message */
|
|
|
|
dissect_m2tp_message(message_tvb, pinfo, m2tp_item, m2tp_tree, tree);
|
|
|
|
}
|
|
|
|
|
2006-05-21 04:49:01 +00:00
|
|
|
/* Register the protocol with Wireshark */
|
2001-12-16 22:30:11 +00:00
|
|
|
void
|
|
|
|
proto_register_m2tp(void)
|
2002-08-28 21:04:11 +00:00
|
|
|
{
|
2001-12-16 22:30:11 +00:00
|
|
|
|
|
|
|
/* Setup list of header fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_m2tp_version,
|
|
|
|
{ "Version", "m2tp.version",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT8, BASE_DEC, VALS(m2tp_protocol_version_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_reserved,
|
|
|
|
{ "Reserved", "m2tp.reserved",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_message_class,
|
|
|
|
{ "Message class", "m2tp.message_class",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT8, BASE_DEC, VALS(m2tp_message_class_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_message_type,
|
|
|
|
{ "Message Type", "m2tp.message_type",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_message_length,
|
|
|
|
{ "Message length", "m2tp.message_length",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_parameter_tag,
|
|
|
|
{ "Parameter Tag", "m2tp.parameter_tag",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT16, BASE_DEC, VALS(m2tp_parameter_tag_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_parameter_length,
|
|
|
|
{ "Parameter length", "m2tp.parameter_length",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_parameter_value,
|
|
|
|
{ "Parameter Value", "m2tp.parameter_value",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL }
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_parameter_padding,
|
|
|
|
{ "Padding", "m2tp.parameter_padding",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL }
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_interface_identifier,
|
|
|
|
{ "Interface Identifier", "m2tp.interface_identifier",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_user,
|
|
|
|
{ "M2tp User Identifier", "m2tp.user_identifier",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, VALS(m2tp_user_identifier_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_master_slave,
|
|
|
|
{ "Master Slave Indicator", "m2tp.master_slave",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, VALS(m2tp_mode_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_info_string,
|
|
|
|
{ "Info string", "m2tp.info_string",
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_diagnostic_info,
|
|
|
|
{ "Diagnostic information", "m2tp.diagnostic_info",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL }
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_heartbeat_data,
|
|
|
|
{ "Heartbeat data", "m2tp.heartbeat_data",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL }
|
2001-12-16 22:30:11 +00:00
|
|
|
},
|
|
|
|
{ &hf_m2tp_error_code,
|
|
|
|
{ "Error code", "m2tp.error_code",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, VALS(m2tp_error_code_values), 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
{ &hf_m2tp_reason,
|
|
|
|
{ "Reason", "m2tp.reason",
|
2002-08-28 21:04:11 +00:00
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2002-08-28 21:04:11 +00:00
|
|
|
},
|
2001-12-16 22:30:11 +00:00
|
|
|
};
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
/* Setup protocol subtree array */
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_m2tp,
|
|
|
|
&ett_m2tp_parameter,
|
|
|
|
};
|
2002-08-28 21:04:11 +00:00
|
|
|
|
2001-12-16 22:30:11 +00:00
|
|
|
/* Register the protocol name and description */
|
|
|
|
proto_m2tp = proto_register_protocol("MTP 2 Transparent Proxy", "M2TP", "m2tp");
|
|
|
|
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
|
|
proto_register_field_array(proto_m2tp, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
2003-12-21 05:51:34 +00:00
|
|
|
}
|
2001-12-16 22:30:11 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_m2tp(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t m2tp_handle;
|
|
|
|
mtp2_handle = find_dissector("mtp2");
|
|
|
|
m2tp_handle = create_dissector_handle(dissect_m2tp, proto_m2tp);
|
2010-12-20 05:35:29 +00:00
|
|
|
dissector_add_uint("sctp.ppi", M2TP_PAYLOAD_PROTOCOL_ID, m2tp_handle);
|
|
|
|
dissector_add_uint("sctp.port", SCTP_PORT_M2TP, m2tp_handle);
|
2001-12-16 22:30:11 +00:00
|
|
|
}
|