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wireshark/epan/dissectors/packet-dua.c

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/* packet-dua.c
* Routines for DPNSS/DASS2-User Adaptation Layer dissection
*
* It is hopefully (needs testing) compliant to
* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-dua-08.txt
* http://www.ietf.org/internet-drafts/draft-ietf-sigtran-rfc3057bis-02.txt
*
* To do: - provide better handling of length parameters
*
* Copyright 2005, Michael Tuexen <tuexen [AT] fh-muenster.de>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-iua.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/sctpppids.h>
void proto_register_dua(void);
void proto_reg_handoff_dua(void);
/* Initialize the protocol and registered fields */
static int proto_dua = -1;
static int hf_int_interface_id = -1;
static int hf_text_interface_id = -1;
static int hf_info_string = -1;
static int hf_dlci_reserved = -1;
static int hf_dlci_v_bit = -1;
static int hf_dlci_zero_bit = -1;
static int hf_dlci_channel = -1;
static int hf_dlci_one_bit = -1;
static int hf_dlci_spare = -1;
static int hf_diag_info = -1;
static int hf_interface_range_start = -1;
static int hf_interface_range_end = -1;
static int hf_heartbeat_data = -1;
static int hf_traffic_mode_type = -1;
static int hf_error_code = -1;
static int hf_status_type = -1;
static int hf_status_id = -1;
static int hf_release_reason = -1;
static int hf_tei_status = -1;
static int hf_asp_id = -1;
static int hf_states = -1;
static int hf_parameter_tag = -1;
static int hf_parameter_length = -1;
static int hf_parameter_value = -1;
static int hf_parameter_padding = -1;
static int hf_version = -1;
static int hf_reserved = -1;
static int hf_message_class = -1;
static int hf_message_type = -1;
static int hf_message_length = -1;
/* Initialize the subtree pointers */
static gint ett_dua = -1;
static gint ett_dua_parameter = -1;
static dissector_handle_t data_handle;
static dissector_handle_t dpnss_handle;
#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
#define PARAMETER_TAG_LENGTH 2
#define PARAMETER_LENGTH_LENGTH 2
#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
#define PARAMETER_TAG_OFFSET 0
#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
#define INT_INTERFACE_ID_OFFSET PARAMETER_VALUE_OFFSET
#define INT_INTERFACE_ID_LENGTH 4
static void
dissect_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_int_interface_id,
parameter_tvb, INT_INTERFACE_ID_OFFSET, INT_INTERFACE_ID_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%d)", tvb_get_ntohl(parameter_tvb, INT_INTERFACE_ID_OFFSET));
}
#define TEXT_INTERFACE_ID_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 interface_id_length;
interface_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_text_interface_id,
parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length, ENC_ASCII|ENC_NA);
proto_item_append_text(parameter_item, " (%.*s)", interface_id_length,
tvb_get_string(wmem_packet_scope(), parameter_tvb, TEXT_INTERFACE_ID_OFFSET, interface_id_length));
}
#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 info_string_length;
info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_info_string,
parameter_tvb, INFO_STRING_OFFSET, info_string_length, ENC_ASCII|ENC_NA);
proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
tvb_get_string(wmem_packet_scope(), parameter_tvb, INFO_STRING_OFFSET, info_string_length));
}
#define DLCI_LENGTH 2
#define SPARE_LENGTH 2
#define DLCI_OFFSET PARAMETER_VALUE_OFFSET
#define SPARE_OFFSET (DLCI_OFFSET + DLCI_LENGTH)
#define RESERVED_BIT_MASK 0xfe00
#define V_BIT_MASK 0x0100
#define ZERO_BIT_MASK 0x0080
#define CHANNEL_BIT_MASK 0x007e
#define ONE_BIT_MASK 0x0001
static void
dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
proto_tree_add_item(parameter_tree, hf_dlci_reserved, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dlci_v_bit, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dlci_channel, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dlci_spare, parameter_tvb, SPARE_OFFSET, SPARE_LENGTH, ENC_BIG_ENDIAN);
}
static void
dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 diag_info_length;
diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_diag_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, ENC_NA);
proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
}
#define START_LENGTH 4
#define END_LENGTH 4
#define INTERVAL_LENGTH (START_LENGTH + END_LENGTH)
#define START_OFFSET 0
#define END_OFFSET (START_OFFSET + START_LENGTH)
static void
dissect_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 number_of_ranges, range_number;
gint offset;
number_of_ranges = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INTERVAL_LENGTH;
offset = PARAMETER_VALUE_OFFSET;
for(range_number = 0; range_number < number_of_ranges; range_number++) {
proto_tree_add_item(parameter_tree, hf_interface_range_start,
parameter_tvb, offset + START_OFFSET, START_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_interface_range_end,
parameter_tvb, offset + END_OFFSET, END_LENGTH, ENC_BIG_ENDIAN);
offset += INTERVAL_LENGTH;
};
proto_item_append_text(parameter_item, " (%u range%s)", number_of_ranges, plurality(number_of_ranges, "", "s"));
}
#define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 heartbeat_data_length;
heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
proto_tree_add_item(parameter_tree, hf_heartbeat_data,
parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, ENC_NA);
proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
}
#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
static const value_string traffic_mode_type_values[] = {
{ OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
{ LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
{ 0, NULL } };
#define TRAFFIC_MODE_TYPE_LENGTH 4
#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_traffic_mode_type,
parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%s)",
val_to_str_const(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET),
traffic_mode_type_values, "unknown"));
}
#define INVALID_VERSION_ERROR 0x01
#define INVALID_INTERFACE_IDENTIFIER_ERROR 0x02
#define UNSUPPORTED_MESSAGE_CLASS_ERROR 0x03
#define UNSUPPORTED_MESSAGE_TYPE_ERROR 0x04
#define UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR 0x05
#define UNEXPECTED_MESSAGE_ERROR 0x06
#define PROTOCOL_ERROR 0x07
#define UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR 0x08
#define INVALID_STREAM_IDENTIFIER_ERROR 0x09
#define REFUSED_MANAGEMENT_BLOCKING_ERROR 0x0d
#define ASP_IDENTIFIER_REQUIRED_ERROR 0x0e
#define INVALID_ASP_IDENTIFIER_ERROR 0x0f
#define CHANNEL_NUMBER_OUT_OF_RANGE_ERROR 0x1c
#define CHANNEL_NUMBER_NOT_CONFIGURED 0x1d
static const value_string error_code_values[] = {
{ INVALID_VERSION_ERROR, "Invalid version" },
{ INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
{ UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsupported message class" },
{ UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
{ UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
{ UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
{ PROTOCOL_ERROR, "Protocol error" },
{ UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
{ INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
{ REFUSED_MANAGEMENT_BLOCKING_ERROR, "Refused - Management blocking" },
{ ASP_IDENTIFIER_REQUIRED_ERROR, "ASP identifier required" },
{ INVALID_ASP_IDENTIFIER_ERROR, "Invalid ASP Identifier" },
{ CHANNEL_NUMBER_OUT_OF_RANGE_ERROR, "Channel number out of range" },
{ CHANNEL_NUMBER_NOT_CONFIGURED, "Channel number not configured" },
{ 0, NULL } };
#define ERROR_CODE_LENGTH 4
#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_error_code,
parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%s)",
val_to_str_const(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET),
error_code_values,
"unknown"));
}
#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
#define OTHER_STATUS_TYPE 0x02
static const value_string status_type_values[] = {
{ ASP_STATE_CHANGE_STATUS_TYPE, "Application server state change" },
{ OTHER_STATUS_TYPE, "Other" },
{ 0, NULL } };
#define AS_DOWN_STATUS_IDENT 0x01
#define AS_INACTIVE_STATUS_IDENT 0x02
#define AS_ACTIVE_STATUS_IDENT 0x03
#define AS_PENDING_STATUS_IDENT 0x04
#define INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT 0x01
#define ALTERNATE_ASP_ACTIVE_STATUS_IDENT 0x02
static const value_string status_type_id_values[] = {
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_DOWN_STATUS_IDENT, "Application server down" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
{ ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
{ OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
{ OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
{ 0, NULL } };
#define STATUS_TYPE_LENGTH 2
#define STATUS_IDENT_LENGTH 2
#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
#define STATUS_IDENT_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
static void
dissect_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 status_type, status_id;
status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
status_id = tvb_get_ntohs(parameter_tvb, STATUS_IDENT_OFFSET);
proto_tree_add_item(parameter_tree, hf_status_type,
parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_uint_format_value(parameter_tree, hf_status_id, parameter_tvb, STATUS_IDENT_OFFSET, STATUS_IDENT_LENGTH,
status_id, "%u (%s)", status_id,
val_to_str_const(status_type * 256 * 256 + status_id, status_type_id_values, "unknown"));
proto_item_append_text(parameter_item, " (%s)",
val_to_str_const(status_type * 256 * 256 + status_id,
status_type_id_values,
"unknown status information"));
}
#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_item *parameter_item, packet_info *pinfo, proto_tree *tree)
{
guint16 protocol_data_length;
tvbuff_t *protocol_data_tvb;
protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
protocol_data_tvb = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_OFFSET, protocol_data_length, protocol_data_length);
if(dpnss_handle){
call_dissector(dpnss_handle, protocol_data_tvb, pinfo, tree);
return;
}
call_dissector(data_handle, protocol_data_tvb, pinfo, tree);
proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
}
#define RELEASE_MGMT_REASON 0
#define RELEASE_PHYS_REASON 1
#define RELEASE_DM_REASON 2
#define RELEASE_OTHER_REASON 3
static const value_string release_reason_values[] = {
{ RELEASE_MGMT_REASON, "Management layer generated release" },
{ RELEASE_PHYS_REASON, "Physical layer alarm generated release" },
{ RELEASE_DM_REASON, "Layer 2 should release" },
{ RELEASE_OTHER_REASON, "Other reason" },
{ 0, NULL } };
#define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
#define RELEASE_REASON_LENGTH 4
static void
dissect_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_release_reason,
parameter_tvb, RELEASE_REASON_OFFSET, RELEASE_REASON_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%s)",
val_to_str_const(tvb_get_ntohl(parameter_tvb, RELEASE_REASON_OFFSET),
release_reason_values,
"unknown"));
}
#define TEI_STATUS_ASSIGNED 0
#define TEI_STATUS_UNASSIGNED 1
static const value_string tei_status_values[] = {
{ TEI_STATUS_ASSIGNED, "TEI is considered assigned by Q.921" },
{ TEI_STATUS_UNASSIGNED, "TEI is considered unassigned by Q.921" },
{ 0, NULL } };
#define TEI_STATUS_LENGTH 4
#define TEI_STATUS_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_tei_status,
parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%s)",
val_to_str_const(tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET),
tei_status_values,
"unknown"));
}
#define ASP_ID_LENGTH 4
#define ASP_ID_OFFSET PARAMETER_VALUE_OFFSET
static void
dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_asp_id, parameter_tvb, ASP_ID_OFFSET, ASP_ID_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_ID_OFFSET));
}
static void
dissect_dlc_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item _U_)
{
guint16 parameter_value_length;
/* FIXME: This can be done better */
parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
if (parameter_value_length > 0)
proto_tree_add_item(parameter_tree,
hf_states, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
}
static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 parameter_value_length;
parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
if (parameter_value_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_value,
parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
proto_item_append_text(parameter_item, " with tag %u and %u byte%s value",
tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET),
parameter_value_length, plurality(parameter_value_length, "", "s"));
}
#define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
#define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
#define INFO_PARAMETER_TAG 0x04
#define DLCI_PARAMETER_TAG 0x05
#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
#define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
#define HEARTBEAT_DATA_PARAMETER_TAG 0x09
#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
#define ERROR_CODE_PARAMETER_TAG 0x0c
#define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
#define PROTOCOL_DATA_PARAMETER_TAG 0x0e
#define RELEASE_REASON_PARAMETER_TAG 0x0f
#define TEI_STATUS_PARAMETER_TAG 0x10
#define ASP_IDENTIFIER_PARAMETER_TAG 0x11
#define DLC_STATUS_PARAMETER_TAG 0x12
static const value_string parameter_tag_values[] = {
{ INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
{ TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
{ INFO_PARAMETER_TAG, "Info" },
{ DLCI_PARAMETER_TAG, "DLCI" },
{ DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
{ INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
{ HEARTBEAT_DATA_PARAMETER_TAG, "Heartbeat data" },
{ TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
{ ERROR_CODE_PARAMETER_TAG, "Error code" },
{ STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
{ PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
{ RELEASE_REASON_PARAMETER_TAG, "Reason" },
{ TEI_STATUS_PARAMETER_TAG, "TEI status" },
{ ASP_IDENTIFIER_PARAMETER_TAG, "ASP identifier"},
{ DLC_STATUS_PARAMETER_TAG, "DLC status" },
{ 0, NULL } };
static void
dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *dua_tree)
{
guint16 tag, length, padding_length;
proto_item *parameter_item;
proto_tree *parameter_tree;
/* 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);
padding_length = tvb_length(parameter_tvb) - length;
/* create proto_tree stuff */
parameter_item = proto_tree_add_text(dua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET,
tvb_length(parameter_tvb), "%s",
val_to_str_const(tag, parameter_tag_values, "Unknown parameter"));
parameter_tree = proto_item_add_subtree(parameter_item, ett_dua_parameter);
/* add tag and length to the dua tree */
proto_tree_add_item(parameter_tree, hf_parameter_tag,
parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_parameter_length,
parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
switch(tag) {
case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case INFO_PARAMETER_TAG:
dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case DLCI_PARAMETER_TAG:
dissect_dlci_parameter(parameter_tvb, parameter_tree);
break;
case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
dissect_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case HEARTBEAT_DATA_PARAMETER_TAG:
dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ERROR_CODE_PARAMETER_TAG:
dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
dissect_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case PROTOCOL_DATA_PARAMETER_TAG:
dissect_protocol_data_parameter(parameter_tvb, parameter_item, pinfo, tree);
break;
case RELEASE_REASON_PARAMETER_TAG:
dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case TEI_STATUS_PARAMETER_TAG:
dissect_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ASP_IDENTIFIER_PARAMETER_TAG:
dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case DLC_STATUS_PARAMETER_TAG:
dissect_dlc_status_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
default:
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
};
if (padding_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_padding,
parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA);
}
static void
dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *dua_tree)
{
gint offset, length, total_length, remaining_length;
tvbuff_t *parameter_tvb;
offset = 0;
while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
total_length = ADD_PADDING(length);
if (remaining_length >= length)
total_length = MIN(total_length, remaining_length);
/* create a tvb for the parameter including the padding bytes */
parameter_tvb = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
dissect_parameter(parameter_tvb, pinfo, tree, dua_tree);
/* get rid of the handled parameter */
offset += total_length;
}
}
#define VERSION_LENGTH 1
#define RESERVED_LENGTH 1
#define MESSAGE_CLASS_LENGTH 1
#define MESSAGE_TYPE_LENGTH 1
#define MESSAGE_LENGTH_LENGTH 4
#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
#define COMMON_HEADER_OFFSET 0
#define VERSION_OFFSET COMMON_HEADER_OFFSET
#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
#define PARAMETERS_OFFSET (COMMON_HEADER_OFFSET + COMMON_HEADER_LENGTH)
#define PROTOCOL_VERSION_RELEASE_1 1
static const value_string protocol_version_values[] = {
{ PROTOCOL_VERSION_RELEASE_1, "Release 1" },
{ 0, NULL } };
#define MESSAGE_CLASS_MGMT_MESSAGE 0
#define MESSAGE_CLASS_ASPSM_MESSAGE 3
#define MESSAGE_CLASS_ASPTM_MESSAGE 4
#define MESSAGE_CLASS_DPTM_MESSAGE 13
static const value_string message_class_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE, "Management messages" },
{ MESSAGE_CLASS_ASPSM_MESSAGE, "ASP state maintenance messages" },
{ MESSAGE_CLASS_ASPTM_MESSAGE, "ASP traffic maintenance messages" },
{ MESSAGE_CLASS_DPTM_MESSAGE, "DPNSS/DASS2 boundary primitive transport messages" },
{ 0, NULL } };
/* message types for MGMT messages */
#define MESSAGE_TYPE_ERR 0
#define MESSAGE_TYPE_NTFY 1
#define MESSAGE_TYPE_DLC_STAT_REQ 5
#define MESSAGE_TYPE_DLC_STAT_CON 6
#define MESSAGE_TYPE_DLC_STAT_IND 7
/* message types for ASPSM messages */
#define MESSAGE_TYPE_UP 1
#define MESSAGE_TYPE_DOWN 2
#define MESSAGE_TYPE_BEAT 3
#define MESSAGE_TYPE_UP_ACK 4
#define MESSAGE_TYPE_DOWN_ACK 5
#define MESSAGE_TYPE_BEAT_ACK 6
/* message types for ASPTM messages */
#define MESSAGE_TYPE_ACTIVE 1
#define MESSAGE_TYPE_INACTIVE 2
#define MESSAGE_TYPE_ACTIVE_ACK 3
#define MESSAGE_TYPE_INACTIVE_ACK 4
/* message types for DPTM messages */
#define MESSAGE_TYPE_DATA_REQUEST 1
#define MESSAGE_TYPE_DATA_INDICATION 2
#define MESSAGE_TYPE_ESTABLISH_REQUEST 5
#define MESSAGE_TYPE_ESTABLISH_CONFIRM 6
#define MESSAGE_TYPE_ESTABLISH_INDICATION 7
#define MESSAGE_TYPE_RELEASE_REQUEST 8
#define MESSAGE_TYPE_RELEASE_CONFIRM 9
#define MESSAGE_TYPE_RELEASE_INDICATION 10
static const value_string message_class_type_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_REQ, "DLC status request" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_CON, "DLC status confirm" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_IND, "DLC status indication" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
{ 0, NULL } };
static const value_string message_class_type_acro_values[] = {
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_REQ, "DLC_STAT_REQ" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_CON, "DLC_STAT_CON" },
{ MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_DLC_STAT_IND, "DLC_STAT_IND" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
{ MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
{ MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
{ MESSAGE_CLASS_DPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
{ 0, NULL } };
static void
dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *dua_tree)
{
guint8 message_class, message_type;
message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(message_class * 256 + message_type,
message_class_type_acro_values,
"Unknown"));
if (dua_tree) {
/* add the components of the common header to the protocol tree */
proto_tree_add_item(dua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(dua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(dua_tree, hf_message_class,
common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_uint_format_value(dua_tree, hf_message_type,
common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH,
message_type, "%u (%s)",
message_type, val_to_str_const(message_class * 256 + message_type,
message_class_type_values,
"reserved"));
proto_tree_add_item(dua_tree, hf_message_length,
common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
}
}
static void
dissect_dua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *dua_tree)
{
tvbuff_t *common_header_tvb, *parameters_tvb;
common_header_tvb = tvb_new_subset(message_tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
parameters_tvb = tvb_new_subset_remaining(message_tvb, PARAMETERS_OFFSET);
dissect_common_header(common_header_tvb, pinfo, dua_tree);
dissect_parameters(parameters_tvb, pinfo, tree, dua_tree);
}
static void
dissect_dua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *dua_item;
proto_tree *dua_tree;
/* make entry in the Protocol column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DUA");
/* 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 m3ua protocol tree */
dua_item = proto_tree_add_item(tree, proto_dua, message_tvb, 0, -1, ENC_NA);
dua_tree = proto_item_add_subtree(dua_item, ett_dua);
} else {
dua_tree = NULL;
};
/* dissect the message */
dissect_dua_message(message_tvb, pinfo, tree, dua_tree);
}
/* Register the protocol with Wireshark */
void
proto_register_dua(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_int_interface_id,
{ "Integer interface identifier", "dua.int_interface_identifier",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL } },
{ &hf_text_interface_id,
{ "Text interface identifier", "dua.text_interface_identifier",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_info_string,
{ "Info string", "dua.info_string",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_dlci_reserved,
{ "Reserved", "dua.dlci_reserved",
FT_UINT16, BASE_DEC, NULL, RESERVED_BIT_MASK,
NULL, HFILL } },
{ &hf_dlci_v_bit,
{ "V-bit", "dua.dlci_v_bit",
FT_BOOLEAN, 16, NULL, V_BIT_MASK,
NULL, HFILL } },
{ &hf_dlci_zero_bit,
{ "Zero bit", "dua.dlci_zero_bit",
FT_BOOLEAN, 16, NULL, ZERO_BIT_MASK,
NULL, HFILL } },
{ &hf_dlci_channel,
{ "Channel", "dua.dlci_channel",
FT_UINT16, BASE_DEC, NULL, CHANNEL_BIT_MASK,
NULL, HFILL } },
{ &hf_dlci_one_bit,
{ "One bit", "dua.dlci_one_bit",
FT_BOOLEAN, 16, NULL, ONE_BIT_MASK,
NULL, HFILL } },
{ &hf_dlci_spare,
{ "Spare", "dua.dlci_spare",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_diag_info,
{ "Diagnostic information", "dua.diagnostic_information",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_interface_range_start,
{ "Start", "dua.interface_range_start",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_interface_range_end,
{ "End", "dua.interface_range_end",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_heartbeat_data,
{ "Heartbeat data", "dua.heartbeat_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_traffic_mode_type,
{ "Traffic mode type", "dua.traffic_mode_type",
FT_UINT32, BASE_HEX, VALS(traffic_mode_type_values), 0x0,
NULL, HFILL } },
{ &hf_error_code,
{ "Error code", "dua.error_code",
FT_UINT32, BASE_DEC, VALS(error_code_values), 0x0,
NULL, HFILL } },
{ &hf_status_type,
{ "Status type", "dua.status_type",
FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0,
NULL, HFILL } },
{ &hf_status_id,
{ "Status identification", "dua.status_identification",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_release_reason,
{ "Reason", "dua.release_reason",
FT_UINT32, BASE_HEX, VALS(release_reason_values), 0x0,
NULL, HFILL } },
{ &hf_tei_status,
{ "TEI status", "dua.tei_status",
FT_UINT32, BASE_HEX, VALS(tei_status_values), 0x0,
NULL, HFILL } },
{ &hf_asp_id,
{ "ASP identifier", "dua.asp_identifier",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL } },
{ &hf_states,
{ "States", "dua.states",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_parameter_tag,
{ "Parameter Tag", "dua.parameter_tag",
FT_UINT16, BASE_DEC, VALS(parameter_tag_values), 0x0,
NULL, HFILL } },
{ &hf_parameter_length,
{ "Parameter length", "dua.parameter_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_parameter_value,
{ "Parameter value", "dua.parameter_value",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_parameter_padding,
{ "Parameter padding", "dua.parameter_padding",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL } },
{ &hf_version,
{ "Version", "dua.version",
FT_UINT8, BASE_DEC, VALS(protocol_version_values), 0x0,
NULL, HFILL } },
{ &hf_reserved,
{ "Reserved", "dua.reserved",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL } },
{ &hf_message_class,
{ "Message class", "dua.message_class",
FT_UINT8, BASE_DEC, VALS(message_class_values), 0x0,
NULL, HFILL } },
{ &hf_message_type,
{ "Message Type", "dua.message_type",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
{ &hf_message_length,
{ "Message length", "dua.message_length",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL } },
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_dua,
&ett_dua_parameter,
};
/* Register the protocol name and description */
proto_dua = proto_register_protocol("DPNSS/DASS2-User Adaptation Layer", "DUA", "dua");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_dua, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Allow other dissectors to find this one by name. */
register_dissector("dua", dissect_dua, proto_dua);
}
void
proto_reg_handoff_dua(void)
{
dissector_handle_t dua_handle;
dua_handle = find_dissector("dua");
data_handle = find_dissector("data");
dpnss_handle = find_dissector("dpnss");
dissector_add_uint("sctp.ppi", DUA_PAYLOAD_PROTOCOL_ID, dua_handle);
}
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