epan/dissectors/packet-m3ua.c

   1 /* packet-m3ua.c
   2  * Routines for MTP3 User Adaptation Layer dissection
   3  * It is hopefully (needs testing) compilant to
   4  * http://www.ietf.org/internet-drafts/draft-ietf-sigtran-m3ua-05.txt (expired)
   5  * http://www.ietf.org/internet-drafts/draft-ietf-sigtran-m3ua-06.txt (expired)
   6  * http://www.ietf.org/internet-drafts/draft-ietf-sigtran-m3ua-07.txt (expired)
   7  * http://www.ietf.org/rfc/rfc3332.txt
   8  *
   9  * Copyright 2000, 2001, 2002, 2003, 2004 Michael Tuexen <tuexen [AT] fh-muenster.de>
  10  *
  11  * $Id$
  12  *
  13  * Wireshark - Network traffic analyzer
  14  * By Gerald Combs <gerald@wireshark.org>
  15  * Copyright 1998 Gerald Combs
  16  *
  17  * Copied from README.developer
  18  *
  19  * This program is free software; you can redistribute it and/or
  20  * modify it under the terms of the GNU General Public License
  21  * as published by the Free Software Foundation; either version 2
  22  * of the License, or (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; if not, write to the Free Software
  31  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 # include "config.h"
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40
  41
  42 #include <string.h>
  43 #include <glib.h>
  44
  45 #include <epan/packet.h>
  46 #include <epan/prefs.h>
  47 #include <epan/sctpppids.h>
  48 #include <epan/emem.h>
  49 #include "packet-mtp3.h"
  50
  51 #define SCTP_PORT_M3UA         2905
  52 #define NETWORK_BYTE_ORDER     FALSE
  53 #define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
  54
  55 #define VERSION_LENGTH         1
  56 #define RESERVED_LENGTH        1
  57 #define MESSAGE_CLASS_LENGTH   1
  58 #define MESSAGE_TYPE_LENGTH    1
  59 #define MESSAGE_LENGTH_LENGTH  4
  60 #define COMMON_HEADER_LENGTH   (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
  61                                 MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
  62
  63 #define VERSION_OFFSET         0
  64 #define RESERVED_OFFSET        (VERSION_OFFSET + VERSION_LENGTH)
  65 #define MESSAGE_CLASS_OFFSET   (RESERVED_OFFSET + RESERVED_LENGTH)
  66 #define MESSAGE_TYPE_OFFSET    (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
  67 #define MESSAGE_LENGTH_OFFSET  (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
  68
  69 #define PARAMETER_TAG_LENGTH    2
  70 #define PARAMETER_LENGTH_LENGTH 2
  71 #define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
  72
  73 #define PARAMETER_TAG_OFFSET    0
  74 #define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
  75 #define PARAMETER_VALUE_OFFSET  (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
  76 #define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
  77
  78 #define PROTOCOL_VERSION_RELEASE_1             1
  79
  80 static const value_string protocol_version_values[] = {
  81   { PROTOCOL_VERSION_RELEASE_1,  "Release 1" },
  82   { 0,                           NULL } };
  83
  84 #define MESSAGE_CLASS_MGMT_MESSAGE        0
  85 #define MESSAGE_CLASS_TFER_MESSAGE        1
  86 #define MESSAGE_CLASS_SSNM_MESSAGE        2
  87 #define MESSAGE_CLASS_ASPSM_MESSAGE       3
  88 #define MESSAGE_CLASS_ASPTM_MESSAGE       4
  89 #define MESSAGE_CLASS_RKM_MESSAGE         9
  90
  91 static const value_string message_class_values[] = {
  92   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
  93   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
  94   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
  95   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
  96   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
  97   { MESSAGE_CLASS_RKM_MESSAGE,    "Routing key management messages" },
  98   { 0,                           NULL } };
  99
 100 static const value_string v5_message_class_values[] = {
 101   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
 102   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
 103   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
 104   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
 105   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
 106   { 0,                           NULL } };
 107
 108 #define MESSAGE_TYPE_ERR                  0
 109 #define MESSAGE_TYPE_NTFY                 1
 110
 111 #define MESSAGE_TYPE_DATA                 1
 112
 113 #define MESSAGE_TYPE_DUNA                 1
 114 #define MESSAGE_TYPE_DAVA                 2
 115 #define MESSAGE_TYPE_DAUD                 3
 116 #define MESSAGE_TYPE_SCON                 4
 117 #define MESSAGE_TYPE_DUPU                 5
 118 #define MESSAGE_TYPE_DRST                 6
 119
 120 #define MESSAGE_TYPE_UP                   1
 121 #define MESSAGE_TYPE_DOWN                 2
 122 #define MESSAGE_TYPE_BEAT                 3
 123 #define MESSAGE_TYPE_UP_ACK               4
 124 #define MESSAGE_TYPE_DOWN_ACK             5
 125 #define MESSAGE_TYPE_BEAT_ACK             6
 126
 127 #define MESSAGE_TYPE_ACTIVE               1
 128 #define MESSAGE_TYPE_INACTIVE             2
 129 #define MESSAGE_TYPE_ACTIVE_ACK           3
 130 #define MESSAGE_TYPE_INACTIVE_ACK         4
 131
 132 #define MESSAGE_TYPE_REG_REQ              1
 133 #define MESSAGE_TYPE_REG_RSP              2
 134 #define MESSAGE_TYPE_DEREG_REQ            3
 135 #define MESSAGE_TYPE_DEREG_RSP            4
 136
 137 static const value_string v5_message_class_type_values[] = {
 138   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 139   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 140   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 141   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 142   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 143   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 144   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 145   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 146   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (UP)" },
 147   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (DOWN)" },
 148   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 149   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (UP ACK)" },
 150   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (DOWN ACK)" },
 151   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT ACK)" },
 152   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ACTIVE)" },
 153   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (INACTIVE)" },
 154   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ACTIVE ACK)" },
 155   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (INACTIVE ACK)" },
 156   { 0,                                                              NULL } };
 157
 158 static const value_string message_class_type_values[] = {
 159   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 160   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 161   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 162   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 163   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 164   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 165   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 166   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 167   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "Destination Restricted (DRST)" },
 168   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (ASPUP)" },
 169   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (ASPDN)" },
 170   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 171   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (ASPUP_ACK)" },
 172   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (ASPDN_ACK)" },
 173   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT_ACK)" },
 174   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ASPAC)" },
 175   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (ASPIA)" },
 176   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ASPAC_ACK)" },
 177   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (ASPIA_ACK)" },
 178   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "Registration request (REG_REQ)" },
 179   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "Registration response (REG_RSP)" },
 180   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "Deregistration request (DEREG_REQ)" },
 181   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "Deregistration response (DEREG_RSP)" },
 182   { 0,                           NULL } };
 183
 184 static const value_string v5_message_class_type_acro_values[] = {
 185   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 186   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 187   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 188   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 189   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 190   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 191   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 192   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 193   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP_UP" },
 194   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP_DOWN" },
 195   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 196   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP_UP_ACK" },
 197   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP_DOWN_ACK" },
 198   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 199   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP_ACTIVE" },
 200   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP_INACTIVE" },
 201   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP_ACTIVE_ACK" },
 202   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
 203   { 0,                                                              NULL } };
 204
 205 static const value_string message_class_type_acro_values[] = {
 206   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 207   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 208   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 209   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 210   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 211   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 212   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 213   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 214   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "DRST" },
 215   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASPUP" },
 216   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASPDN" },
 217   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 218   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASPUP_ACK" },
 219   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASPDN_ACK" },
 220   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 221   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASPAC" },
 222   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASPIA" },
 223   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASPAC_ACK" },
 224   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASPIA_ACK" },
 225   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "REG_REQ" },
 226   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "REG_RSP" },
 227   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "DEREG_REQ" },
 228   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "DEREG_RSP" },
 229   { 0,                           NULL } };
 230
 231 /* Initialize the protocol and registered fields */
 232 static int proto_m3ua = -1;
 233 static int hf_version = -1;
 234 static int hf_reserved = -1;
 235 static int hf_message_class = -1;
 236 static int hf_v5_message_class = -1;
 237 static int hf_message_type = -1;
 238 static int hf_message_length = -1;
 239 static int hf_v5_parameter_tag = -1;
 240 static int hf_v6_parameter_tag = -1;
 241 static int hf_v7_parameter_tag = -1;
 242 static int hf_parameter_tag = -1;
 243 static int hf_parameter_length = -1;
 244 static int hf_parameter_value = -1;
 245 static int hf_parameter_padding = -1;
 246 static int hf_parameter_trailer = -1;
 247 static int hf_network_appearance = -1;
 248 static int hf_info_string = -1;
 249 static int hf_routing_context = -1;
 250 static int hf_diagnostic_information = -1;
 251 static int hf_heartbeat_data = -1;
 252 static int hf_v5_error_code = -1;
 253 static int hf_v6_error_code = -1;
 254 static int hf_v7_error_code = -1;
 255 static int hf_error_code = -1;
 256 static int hf_status_type = -1;
 257 static int hf_status_info = -1;
 258 static int hf_asp_identifier = -1;
 259 static int hf_affected_point_code_mask = -1;
 260 static int hf_affected_point_code_pc = -1;
 261 static int hf_cause = -1;
 262 static int hf_user = -1;
 263 static int hf_reason = -1;
 264 static int hf_v5_traffic_mode_type = -1;
 265 static int hf_v6_traffic_mode_type = -1;
 266 static int hf_v7_traffic_mode_type = -1;
 267 static int hf_traffic_mode_type = -1;
 268 static int hf_congestion_reserved = -1;
 269 static int hf_congestion_level = -1;
 270 static int hf_concerned_dest_reserved = -1;
 271 static int hf_concerned_dest_pc = -1;
 272 static int hf_local_rk_identifier = -1;
 273 static int hf_dpc_mask = -1;
 274 static int hf_dpc_pc = -1;
 275 static int hf_si = -1;
 276 static int hf_ssn = -1;
 277 static int hf_opc_list_mask = -1;
 278 static int hf_opc_list_pc = -1;
 279 static int hf_cic_range_mask = -1;
 280 static int hf_cic_range_pc = -1;
 281 static int hf_cic_range_upper = -1;
 282 static int hf_cic_range_lower = -1;
 283 static int hf_protocol_data_opc = -1;
 284 static int hf_protocol_data_dpc = -1;
 285 static int hf_protocol_data_si = -1;
 286 static int hf_protocol_data_ni = -1;
 287 static int hf_protocol_data_mp = -1;
 288 static int hf_protocol_data_sls = -1;
 289 static int hf_correlation_identifier = -1;
 290 static int hf_registration_status = -1;
 291 static int hf_deregistration_status = -1;
 292 static int hf_registration_result_identifier = -1;
 293 static int hf_registration_result_status = -1;
 294 static int hf_registration_result_context = -1;
 295 static int hf_v6_deregistration_result_status = -1;
 296 static int hf_v6_deregistration_result_context = -1;
 297 static int hf_li = -1;
 298
 299 /* Initialize the subtree pointers */
 300 static gint ett_m3ua = -1;
 301 static gint ett_parameter = -1;
 302
 303 static module_t *m3ua_module;
 304 static dissector_handle_t mtp3_handle, data_handle;
 305 static dissector_table_t si_dissector_table;
 306
 307 /* stuff for supporting multiple versions */
 308 typedef enum {
 309   M3UA_V5,
 310   M3UA_V6,
 311   M3UA_V7,
 312   M3UA_RFC
 313 } Version_Type;
 314
 315 static gint version = M3UA_RFC;
 316
 317 static mtp3_addr_pc_t mtp3_addr_dpc, mtp3_addr_opc;
 318
 319
 320 static void
 321 dissect_parameters(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
 322
 323 static void
 324 dissect_v5_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 325 {
 326   guint8  message_class, message_type;
 327
 328   /* Extract the common header */
 329   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 330   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 331
 332   if (check_col(pinfo->cinfo, COL_INFO))
 333     col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(message_class * 256 + message_type, v5_message_class_type_acro_values, "reserved"));
 334
 335   if (m3ua_tree) {
 336     /* add the components of the common header to the protocol tree */
 337     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER);
 338     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 339     proto_tree_add_item(m3ua_tree, hf_v5_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER);
 340     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 341                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, v5_message_class_type_values, "reserved"), message_type);
 342     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
 343   }
 344 }
 345
 346 static void
 347 dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 348 {
 349   guint8  message_class, message_type;
 350
 351   /* Extract the common header */
 352   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 353   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 354
 355   if (check_col(pinfo->cinfo, COL_INFO))
 356     col_add_fstr(pinfo->cinfo, COL_INFO,"%s ", val_to_str(message_class * 256 + message_type, message_class_type_acro_values, "reserved"));
 357
 358   if (m3ua_tree) {
 359     /* add the components of the common header to the protocol tree */
 360     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER);
 361     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 362     proto_tree_add_item(m3ua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER);
 363     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 364                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, message_class_type_values, "reserved"), message_type);
 365     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
 366   }
 367 }
 368
 369 #define NETWORK_APPEARANCE_LENGTH 4
 370 #define NETWORK_APPEARANCE_OFFSET PARAMETER_VALUE_OFFSET
 371
 372 static void
 373 dissect_network_appearance_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 374 {
 375   proto_tree_add_item(parameter_tree, hf_network_appearance, parameter_tvb, NETWORK_APPEARANCE_OFFSET, NETWORK_APPEARANCE_LENGTH, NETWORK_BYTE_ORDER);
 376   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, NETWORK_APPEARANCE_OFFSET));
 377 }
 378
 379 #define V5_PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
 380
 381 static void
 382 dissect_v5_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 383 {
 384   guint16 length, protocol_data_length;
 385   tvbuff_t *payload_tvb;
 386
 387   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 388   protocol_data_length = length - PARAMETER_HEADER_LENGTH;
 389   payload_tvb          = tvb_new_subset(parameter_tvb, V5_PROTOCOL_DATA_OFFSET, protocol_data_length, protocol_data_length);
 390   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 391   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 392   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 393 }
 394
 395 #define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
 396
 397 static void
 398 dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 399 {
 400   guint16 info_string_length;
 401
 402   info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 403   proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, NETWORK_BYTE_ORDER);
 404   proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
 405                          (const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
 406 }
 407
 408 #define AFFECTED_MASK_LENGTH 1
 409 #define AFFECTED_DPC_LENGTH  3
 410 #define AFFECTED_DESTINATION_LENGTH (AFFECTED_MASK_LENGTH + AFFECTED_DPC_LENGTH)
 411
 412 #define AFFECTED_MASK_OFFSET 0
 413 #define AFFECTED_DPC_OFFSET  1
 414
 415 static void
 416 dissect_affected_destinations_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 417 {
 418   guint16 number_of_destinations, destination_number;
 419   gint destination_offset;
 420   proto_item *item;
 421
 422   number_of_destinations = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 423   destination_offset = PARAMETER_VALUE_OFFSET;
 424   for(destination_number=1; destination_number <= number_of_destinations; destination_number++) {
 425     proto_tree_add_item(parameter_tree, hf_affected_point_code_mask, parameter_tvb, destination_offset + AFFECTED_MASK_OFFSET, AFFECTED_MASK_LENGTH, NETWORK_BYTE_ORDER);
 426     item = proto_tree_add_item(parameter_tree, hf_affected_point_code_pc,   parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET,  AFFECTED_DPC_LENGTH,  NETWORK_BYTE_ORDER);
 427     if (mtp3_pc_structured())
 428       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET)));
 429     destination_offset += AFFECTED_DESTINATION_LENGTH;
 430   }
 431   proto_item_append_text(parameter_item, " (%u destination%s)", number_of_destinations, plurality(number_of_destinations, "", "s"));
 432 }
 433
 434 #define ROUTING_CONTEXT_LENGTH 4
 435
 436 static void
 437 dissect_routing_context_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 438 {
 439   guint16 number_of_contexts, context_number;
 440   gint context_offset;
 441
 442   number_of_contexts = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 443   context_offset = PARAMETER_VALUE_OFFSET;
 444   for(context_number=1; context_number <= number_of_contexts; context_number++) {
 445     proto_tree_add_item(parameter_tree, hf_routing_context, parameter_tvb, context_offset, ROUTING_CONTEXT_LENGTH, NETWORK_BYTE_ORDER);
 446     context_offset += ROUTING_CONTEXT_LENGTH;
 447   };
 448   proto_item_append_text(parameter_item, " (%u context%s)", number_of_contexts, plurality(number_of_contexts, "", "s"));
 449 }
 450
 451 #define DIAGNOSTIC_INFO_OFFSET PARAMETER_VALUE_OFFSET
 452
 453 static void
 454 dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 455 {
 456   guint16 diag_info_length;
 457
 458   diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 459   proto_tree_add_item(parameter_tree, hf_diagnostic_information, parameter_tvb, DIAGNOSTIC_INFO_OFFSET, diag_info_length, NETWORK_BYTE_ORDER);
 460   proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
 461 }
 462
 463 #define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
 464
 465 static void
 466 dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 467 {
 468   guint16 heartbeat_data_length;
 469
 470   heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 471   proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, NETWORK_BYTE_ORDER);
 472   proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
 473 }
 474
 475 #define UNKNOWN_UNAVAIL_CAUSE                  0
 476 #define UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE   1
 477 #define INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE 2
 478
 479 static const value_string unavailability_cause_values[] = {
 480   { UNKNOWN_UNAVAIL_CAUSE,                  "Unknown"                  },
 481   { UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE,   "Unequipped remote user"   },
 482   { INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE, "Inaccessible remote user" },
 483   {0,                                       NULL } };
 484
 485 #define RESERVED_0_USER_ID                0
 486 #define RESERVED_1_USER_ID                1
 487 #define RESERVED_2_USER_ID                2
 488 #define SCCP_USER_ID                      3
 489 #define TUP_USER_ID                       4
 490 #define ISUP_USER_ID                      5
 491 #define RESERVED_6_USER_ID                6
 492 #define RESERVED_7_USER_ID                7
 493 #define RESERVED_8_USER_ID                8
 494 #define BROADBAND_ISUP_USER_ID            9
 495 #define SATELLITE_ISUP_USER_ID           10
 496 #define RESERVED_11_USER_ID              11
 497 #define AAL_2_SIGNALING_USER_ID          12
 498 #define BICC_USER_ID                     13
 499 #define GATEWAY_CONTROL_PROTOCOL_USER_ID 14
 500 #define RESERVED_15_USER_ID              15
 501
 502 static const value_string user_identity_values[] = {
 503   { RESERVED_0_USER_ID,     "Reserved"       },
 504   { RESERVED_1_USER_ID,     "Reserved"       },
 505   { RESERVED_2_USER_ID,     "Reserved"       },
 506   { SCCP_USER_ID,           "SCCP"           },
 507   { TUP_USER_ID,            "TUP"            },
 508   { ISUP_USER_ID,           "ISUP"           },
 509   { RESERVED_6_USER_ID,     "Reserved"       },
 510   { RESERVED_7_USER_ID,     "Reserved"       },
 511   { RESERVED_8_USER_ID,     "Reserved"       },
 512   { BROADBAND_ISUP_USER_ID, "Broadband ISUP" },
 513   { SATELLITE_ISUP_USER_ID, "Satellite ISUP" },
 514   { RESERVED_11_USER_ID,    "Reserved"       },
 515   { AAL_2_SIGNALING_USER_ID,"AAL type2 Signaling"},
 516   { BICC_USER_ID,           "Bearer Independent Call Control (BICC)"},
 517   { GATEWAY_CONTROL_PROTOCOL_USER_ID, "Gateway Control Protocol"},
 518   { RESERVED_15_USER_ID,    "Reserved"       },
 519
 520   {0,                       NULL             } };
 521
 522 #define CAUSE_LENGTH 2
 523 #define USER_LENGTH  2
 524
 525 #define CAUSE_OFFSET  PARAMETER_VALUE_OFFSET
 526 #define USER_OFFSET   (CAUSE_OFFSET + CAUSE_LENGTH)
 527
 528 static void
 529 dissect_user_cause_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 530 {
 531   proto_tree_add_item(parameter_tree, hf_cause, parameter_tvb, CAUSE_OFFSET, CAUSE_LENGTH, NETWORK_BYTE_ORDER);
 532   proto_tree_add_item(parameter_tree, hf_user,  parameter_tvb, USER_OFFSET,  USER_LENGTH,  NETWORK_BYTE_ORDER);
 533   proto_item_append_text(parameter_item, " (%s: %s)",
 534                          val_to_str(tvb_get_ntohs(parameter_tvb, USER_OFFSET),  user_identity_values,        "Unknown user"),
 535                          val_to_str(tvb_get_ntohs(parameter_tvb, CAUSE_OFFSET), unavailability_cause_values, "unknown cause"));
 536 }
 537
 538 #define UNSPECIFIED_REASON          0
 539 #define USER_UNAVAILABLE_REASON     1
 540 #define MANAGEMENT_BLOCKING_REASON  2
 541
 542 static const value_string reason_values[] = {
 543   { UNSPECIFIED_REASON,         "Unspecified" },
 544   { USER_UNAVAILABLE_REASON,    "User unavailable" },
 545   { MANAGEMENT_BLOCKING_REASON, "Management blocking" },
 546   {0,                           NULL } };
 547
 548 #define REASON_LENGTH 4
 549 #define REASON_OFFSET PARAMETER_VALUE_OFFSET
 550
 551 static void
 552 dissect_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 553 {
 554   proto_tree_add_item(parameter_tree, hf_reason, parameter_tvb, REASON_OFFSET, REASON_LENGTH, NETWORK_BYTE_ORDER);
 555   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REASON_OFFSET), reason_values, "unknown"));
 556 }
 557
 558 #define TRAFFIC_MODE_TYPE_LENGTH 4
 559 #define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 560
 561 static const value_string v5_traffic_mode_type_values[] = {
 562   { 1, "Over-ride"            },
 563   { 2, "Load-share"           },
 564   { 3, "Over-ride (standby)"  },
 565   { 4, "Load-share (standby)" },
 566   { 0, NULL                   } };
 567
 568 static void
 569 dissect_v5_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 570 {
 571   proto_tree_add_item(parameter_tree, hf_v5_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 572   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), v5_traffic_mode_type_values, "unknown"));
 573 }
 574
 575 static const value_string v6_traffic_mode_type_values[] = {
 576   { 1, "Over-ride"            },
 577   { 2, "Load-share"           },
 578   { 3, "Over-ride (standby)"  },
 579   { 4, "Load-share (standby)" },
 580   { 0, NULL                   } };
 581
 582 static void
 583 dissect_v6_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 584 {
 585   proto_tree_add_item(parameter_tree, hf_v6_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 586   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), v6_traffic_mode_type_values, "unknown"));
 587 }
 588
 589 static const value_string v7_traffic_mode_type_values[] = {
 590   { 1, "Over-ride"            },
 591   { 2, "Load-share"           },
 592   { 0, NULL                   } };
 593
 594 static void
 595 dissect_v7_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 596 {
 597   proto_tree_add_item(parameter_tree, hf_v7_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 598   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), v7_traffic_mode_type_values, "unknown"));
 599 }
 600
 601 static const value_string traffic_mode_type_values[] = {
 602   { 1, "Over-ride"  },
 603   { 2, "Load-share" },
 604   { 3, "Broadcast"  },
 605   { 0, NULL         } };
 606
 607 static void
 608 dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 609 {
 610   proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 611   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown"));
 612 }
 613
 614 #define ERROR_CODE_LENGTH 4
 615 #define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
 616
 617 static const value_string v5_error_code_values[] = {
 618   {  1, "Invalid version"               },
 619   {  2, "Invalid network appearance"    },
 620   {  3, "Unsupported message class"     },
 621   {  4, "Unsupported message type"      },
 622   {  5, "Invalid traffic handling mode" },
 623   {  6, "Unexpected message"            },
 624   {  7, "Protocol error"                },
 625   {  8, "Invalid routing context"       },
 626   {  0,  NULL                           } };
 627
 628 static void
 629 dissect_v5_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 630 {
 631   proto_tree_add_item(parameter_tree, hf_v5_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 632   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v5_error_code_values, "unknown"));
 633 }
 634
 635 static const value_string v6_error_code_values[] = {
 636   {  1, "Invalid version"               },
 637   {  2, "Invalid network appearance"    },
 638   {  3, "Unsupported message class"     },
 639   {  4, "Unsupported message type"      },
 640   {  5, "Invalid traffic handling mode" },
 641   {  6, "Unexpected message"            },
 642   {  7, "Protocol error"                },
 643   {  8, "Invalid routing context"       },
 644   {  9, "Invalid stream identifier"     },
 645   { 10, "Invalid parameter value"       },
 646   {  0,  NULL                           } };
 647
 648
 649 static void
 650 dissect_v6_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 651 {
 652   proto_tree_add_item(parameter_tree, hf_v6_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 653   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v6_error_code_values, "unknown"));
 654 }
 655
 656 static const value_string v7_error_code_values[] = {
 657   {  1, "Invalid version"               },
 658   {  2, "Invalid network appearance"    },
 659   {  3, "Unsupported message class"     },
 660   {  4, "Unsupported message type"      },
 661   {  5, "Invalid traffic handling mode" },
 662   {  6, "Unexpected message"            },
 663   {  7, "Protocol error"                },
 664   {  8, "Invalid routing context"       },
 665   {  9, "Invalid stream identifier"     },
 666   { 10, "Invalid parameter value"       },
 667   { 11, "Refused - Management Blocking" },
 668   { 12, "Unknown Routing Context"       },
 669   {  0,  NULL                           } };
 670
 671
 672 static void
 673 dissect_v7_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 674 {
 675   proto_tree_add_item(parameter_tree, hf_v7_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 676   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v7_error_code_values, "unknown"));
 677 }
 678
 679 static const value_string error_code_values[] = {
 680   { 0x01, "Invalid version"                   },
 681   { 0x03, "Unsupported message class"         },
 682   { 0x04, "Unsupported message type"          },
 683   { 0x05, "Unsupported traffic handling mode" },
 684   { 0x06, "Unexpected message"                },
 685   { 0x07, "Protocol error"                    },
 686   { 0x09, "Invalid stream identifier"         },
 687   { 0x0d, "Refused - management blocking"     },
 688   { 0x0e, "ASP identifier required"           },
 689   { 0x0f, "Invalid ASP identifier"            },
 690   { 0x11, "Invalid parameter value"           },
 691   { 0x12, "Parameter field error"             },
 692   { 0x13, "Unexpected parameter"              },
 693   { 0x14, "Destination status unknown"        },
 694   { 0x15, "Invalid network appearance"        },
 695   { 0x16, "Missing parameter"                 },
 696   { 0x19, "Invalid routing context"           },
 697   { 0x1a, "No configured AS for ASP"          },
 698   { 0,    NULL                                } };
 699
 700 static void
 701 dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 702 {
 703   proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 704   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), error_code_values, "unknown"));
 705 }
 706
 707 #define AS_STATE_CHANGE_TYPE       1
 708 #define OTHER_TYPE                 2
 709
 710 static const value_string status_type_values[] = {
 711   { AS_STATE_CHANGE_TYPE,            "Application server state change" },
 712   { OTHER_TYPE,                      "Other" },
 713   { 0,                           NULL } };
 714
 715 #define RESERVED_INFO              1
 716 #define AS_INACTIVE_INFO           2
 717 #define AS_ACTIVE_INFO             3
 718 #define AS_PENDING_INFO            4
 719
 720 #define INSUFFICIENT_ASP_RES_INFO  1
 721 #define ALTERNATE_ASP_ACTIVE_INFO  2
 722 #define ASP_FAILURE_INFO           3
 723
 724 static const value_string v567_status_type_info_values[] = {
 725   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 726   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 727   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 728   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 729   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 730   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 731   {0,                           NULL } };
 732
 733
 734 #define STATUS_TYPE_LENGTH 2
 735 #define STATUS_INFO_LENGTH 2
 736
 737 #define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 738 #define STATUS_INFO_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
 739
 740 static void
 741 dissect_v567_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 742 {
 743   guint16 status_type, status_info;
 744
 745   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 746   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 747
 748   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 749   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 750                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown"), status_info);
 751
 752   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown status information"));
 753 }
 754
 755 static const value_string status_type_info_values[] = {
 756   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 757   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 758   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 759   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 760   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 761   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 762   { OTHER_TYPE           * 256 * 256 + ASP_FAILURE_INFO,          "ASP Failure" },
 763   {0,                           NULL } };
 764
 765 static void
 766 dissect_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 767 {
 768   guint16 status_type, status_info;
 769
 770   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 771   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 772
 773   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 774   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 775                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown"), status_info);
 776
 777   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown status information"));
 778 }
 779
 780 static const value_string congestion_level_values[] = {
 781   { 0, "No congestion or undefined" },
 782   { 1, "Congestion level 1"         },
 783   { 2, "Congestion level 2"         },
 784   { 3, "Congestion level 3"         },
 785   { 0, NULL                         } };
 786
 787 #define CONG_IND_RESERVED_LENGTH    3
 788 #define CONG_IND_LEVEL_LENGTH       1
 789
 790 #define CONG_IND_RESERVED_OFFSET     PARAMETER_VALUE_OFFSET
 791 #define CONG_IND_LEVEL_OFFSET        (CONG_IND_RESERVED_OFFSET + CONG_IND_RESERVED_LENGTH)
 792
 793 static void
 794 dissect_congestion_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 795 {
 796   proto_tree_add_item(parameter_tree, hf_congestion_reserved, parameter_tvb, CONG_IND_RESERVED_OFFSET, CONG_IND_RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 797   proto_tree_add_item(parameter_tree, hf_congestion_level,    parameter_tvb, CONG_IND_LEVEL_OFFSET,    CONG_IND_LEVEL_LENGTH,    NETWORK_BYTE_ORDER);
 798   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_guint8(parameter_tvb, CONG_IND_LEVEL_OFFSET), congestion_level_values, "unknown"));
 799 }
 800
 801 #define ASP_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 802 #define ASP_IDENTIFIER_LENGTH  4
 803
 804 static void
 805 dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 806 {
 807   proto_tree_add_item(parameter_tree, hf_asp_identifier, parameter_tvb, ASP_IDENTIFIER_OFFSET, ASP_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 808   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_IDENTIFIER_OFFSET));
 809 }
 810
 811 #define PROTOCOL_DATA_1_OFFSET PARAMETER_VALUE_OFFSET
 812
 813 static void
 814 dissect_protocol_data_1_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 815 {
 816   guint16 protocol_data_length;
 817   tvbuff_t *payload_tvb;
 818
 819   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 820   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_1_OFFSET, protocol_data_length, protocol_data_length);
 821   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 822   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 823   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 824 }
 825
 826 #define LI_OCTETT_LENGTH 1
 827 #define LI_OCTETT_OFFSET PARAMETER_VALUE_OFFSET
 828 #define PROTOCOL_DATA_2_OFFSET (PARAMETER_VALUE_OFFSET + LI_OCTETT_LENGTH)
 829
 830 static void
 831 dissect_protocol_data_2_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
 832 {
 833   guint8 li;
 834   guint16 protocol_data_length;
 835   tvbuff_t *payload_tvb;
 836
 837   li                   = tvb_get_guint8(parameter_tvb, LI_OCTETT_OFFSET);
 838   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - LI_OCTETT_LENGTH;
 839   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_2_OFFSET, protocol_data_length, protocol_data_length);
 840   proto_tree_add_item(parameter_tree, hf_li, parameter_tvb, LI_OCTETT_OFFSET, LI_OCTETT_LENGTH, NETWORK_BYTE_ORDER);
 841   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 842   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + LI_OCTETT_LENGTH);
 843   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 844 }
 845
 846
 847
 848 #define CON_DEST_RESERVED_LENGTH    1
 849 #define CON_DEST_PC_LENGTH          3
 850
 851 #define CON_DEST_RESERVED_OFFSET    PARAMETER_VALUE_OFFSET
 852 #define CON_DEST_PC_OFFSET          (CON_DEST_RESERVED_OFFSET + CON_DEST_RESERVED_LENGTH)
 853
 854 static void
 855 dissect_concerned_destination_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 856 {
 857   proto_item *item;
 858
 859   proto_tree_add_item(parameter_tree, hf_concerned_dest_reserved, parameter_tvb, CON_DEST_RESERVED_OFFSET, CON_DEST_RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 860   item = proto_tree_add_item(parameter_tree, hf_concerned_dest_pc,       parameter_tvb, CON_DEST_PC_OFFSET,       CON_DEST_PC_LENGTH,       NETWORK_BYTE_ORDER);
 861   if (mtp3_pc_structured())
 862     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 863   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 864 }
 865
 866 static void
 867 dissect_routing_key_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 868 {
 869   tvbuff_t *parameters_tvb;
 870   guint16 length, parameters_length;
 871
 872   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 873   parameters_length = length - PARAMETER_HEADER_LENGTH;
 874   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 875   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 876 }
 877
 878 static const value_string registration_result_status_values[] = {
 879   { 0, "Successfully Registered" } ,
 880   { 1, "Error - Unknown" } ,
 881   { 2, "Error - Invalid DPC" } ,
 882   { 3, "Error - Invalid Network Appearance" } ,
 883   { 4, "Error - Invalid Routing Key" } ,
 884   { 5, "Error - Permission Denied" } ,
 885   { 6, "Error - Overlapping (Non-unique) Routing Key" } ,
 886   { 7, "Error - Routing Key not Provisioned" } ,
 887   { 8, "Error - Insufficient Resources" } ,
 888   { 0, NULL } };
 889
 890 #define REG_RES_IDENTIFIER_LENGTH 4
 891 #define REG_RES_STATUS_LENGTH     4
 892 #define REG_RES_CONTEXT_LENGTH    4
 893
 894 #define REG_RES_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 895 #define REG_RES_STATUS_OFFSET     (REG_RES_IDENTIFIER_OFFSET + REG_RES_IDENTIFIER_LENGTH)
 896 #define REG_RES_CONTEXT_OFFSET    (REG_RES_STATUS_OFFSET + REG_RES_STATUS_LENGTH)
 897
 898 static void
 899 dissect_v67_registration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 900 {
 901   proto_tree_add_item(parameter_tree, hf_registration_result_identifier, parameter_tvb, REG_RES_IDENTIFIER_OFFSET, REG_RES_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 902   proto_tree_add_item(parameter_tree, hf_registration_result_status,     parameter_tvb, REG_RES_STATUS_OFFSET,     REG_RES_STATUS_LENGTH,     NETWORK_BYTE_ORDER);
 903   proto_tree_add_item(parameter_tree, hf_registration_result_context,    parameter_tvb, REG_RES_CONTEXT_OFFSET,    REG_RES_CONTEXT_LENGTH,    NETWORK_BYTE_ORDER);
 904 }
 905
 906 static void
 907 dissect_registration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 908 {
 909   tvbuff_t *parameters_tvb;
 910   guint16 length, parameters_length;
 911
 912   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 913   parameters_length = length - PARAMETER_HEADER_LENGTH;
 914   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 915   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 916 }
 917
 918 static const value_string v6_deregistration_result_status_values[] = {
 919   { 0, "Successfully De-registered" } ,
 920   { 1, "Error - Unknown" } ,
 921   { 2, "Error - Invalid Routing context" } ,
 922   { 3, "Error - Permission Denied" } ,
 923   { 4, "Error - Not registered" } ,
 924   { 0, NULL } };
 925
 926 #define DEREG_RES_CONTEXT_LENGTH 4
 927 #define DEREG_RES_STATUS_LENGTH  4
 928
 929 #define DEREG_RES_CONTEXT_OFFSET PARAMETER_VALUE_OFFSET
 930 #define DEREG_RES_STATUS_OFFSET  (DEREG_RES_CONTEXT_OFFSET + DEREG_RES_CONTEXT_LENGTH)
 931
 932 static void
 933 dissect_v67_deregistration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 934 {
 935   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_context, parameter_tvb, DEREG_RES_CONTEXT_OFFSET, DEREG_RES_CONTEXT_LENGTH, NETWORK_BYTE_ORDER);
 936   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_status,  parameter_tvb, DEREG_RES_STATUS_OFFSET,  DEREG_RES_STATUS_LENGTH,  NETWORK_BYTE_ORDER);
 937 }
 938
 939 static void
 940 dissect_deregistration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 941 {
 942   tvbuff_t *parameters_tvb;
 943   guint16 length, parameters_length;
 944
 945   length            = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 946   parameters_length = length - PARAMETER_HEADER_LENGTH;
 947   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 948   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 949 }
 950
 951
 952 #define LOCAL_RK_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 953 #define LOCAL_RK_IDENTIFIER_LENGTH 4
 954
 955 static void
 956 dissect_local_routing_key_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 957 {
 958   guint32 id;
 959
 960   id = tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET);
 961   proto_tree_add_item(parameter_tree, hf_local_rk_identifier, parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET, LOCAL_RK_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 962   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET));
 963 }
 964
 965 #define DPC_MASK_LENGTH    1
 966 #define DPC_PC_LENGTH      3
 967
 968 #define DPC_MASK_OFFSET    PARAMETER_VALUE_OFFSET
 969 #define DPC_PC_OFFSET      (DPC_MASK_OFFSET + DPC_MASK_LENGTH)
 970
 971 static void
 972 dissect_destination_point_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 973 {
 974   proto_item *item;
 975
 976   proto_tree_add_item(parameter_tree, hf_dpc_mask, parameter_tvb, DPC_MASK_OFFSET, DPC_MASK_LENGTH, NETWORK_BYTE_ORDER);
 977   item = proto_tree_add_item(parameter_tree, hf_dpc_pc,   parameter_tvb, DPC_PC_OFFSET,   DPC_PC_LENGTH,   NETWORK_BYTE_ORDER);
 978   if (mtp3_pc_structured())
 979     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 980   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 981 }
 982
 983 #define SI_LENGTH 1
 984
 985 static void
 986 dissect_service_indicators_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 987 {
 988   guint16 length, number_of_sis, si_number;
 989   gint si_offset;
 990
 991   length        = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 992   number_of_sis = length - PARAMETER_HEADER_LENGTH;
 993
 994   si_offset = PARAMETER_VALUE_OFFSET;
 995   for(si_number=1; si_number <= number_of_sis; si_number++) {
 996     proto_tree_add_item(parameter_tree, hf_si, parameter_tvb, si_offset, SI_LENGTH, NETWORK_BYTE_ORDER);
 997     si_offset += SI_LENGTH;
 998   };
 999   proto_item_append_text(parameter_item, " (%u indicator%s)", number_of_sis, plurality(number_of_sis, "", "s"));
1000
1001 }
1002 #define SSN_LENGTH 1
1003
1004 static void
1005 dissect_subsystem_numbers_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1006 {
1007   guint16 length, number_of_ssns, ssn_number;
1008   gint ssn_offset;
1009
1010   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1011   number_of_ssns = length - PARAMETER_HEADER_LENGTH;
1012
1013   ssn_offset = PARAMETER_VALUE_OFFSET;
1014   for(ssn_number=1; ssn_number <= number_of_ssns; ssn_number++) {
1015     proto_tree_add_item(parameter_tree, hf_ssn, parameter_tvb, ssn_offset, SSN_LENGTH, NETWORK_BYTE_ORDER);
1016     ssn_offset += SSN_LENGTH;
1017   };
1018   proto_item_append_text(parameter_item, " (%u number%s)", number_of_ssns, plurality(number_of_ssns, "", "s"));
1019
1020 }
1021
1022 #define OPC_MASK_LENGTH             1
1023 #define OPC_PC_LENGTH               3
1024 #define OPC_LENGTH                  (OPC_MASK_LENGTH + OPC_PC_LENGTH)
1025 #define OPC_MASK_OFFSET             0
1026 #define OPC_PC_OFFSET               (OPC_MASK_OFFSET + OPC_MASK_LENGTH)
1027
1028 static void
1029 dissect_originating_point_code_list_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1030 {
1031   guint16 length, number_of_point_codes, point_code_number;
1032   gint point_code_offset;
1033   proto_item *item;
1034
1035   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1036   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / 4;
1037
1038   point_code_offset = PARAMETER_VALUE_OFFSET;
1039   for(point_code_number=1; point_code_number <= number_of_point_codes; point_code_number++) {
1040     proto_tree_add_item(parameter_tree, hf_opc_list_mask, parameter_tvb, point_code_offset + OPC_MASK_OFFSET, OPC_MASK_LENGTH, NETWORK_BYTE_ORDER);
1041     item = proto_tree_add_item(parameter_tree, hf_opc_list_pc,   parameter_tvb, point_code_offset + OPC_PC_OFFSET,   OPC_PC_LENGTH,   NETWORK_BYTE_ORDER);
1042     if (mtp3_pc_structured())
1043       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, point_code_offset + OPC_PC_OFFSET)));
1044     point_code_offset += OPC_LENGTH;
1045   };
1046   proto_item_append_text(parameter_item, " (%u point code%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1047 }
1048
1049 #define CIC_RANGE_MASK_LENGTH             1
1050 #define CIC_RANGE_PC_LENGTH               3
1051 #define CIC_RANGE_LOWER_LENGTH            2
1052 #define CIC_RANGE_UPPER_LENGTH            2
1053 #define CIC_RANGE_LENGTH                  (CIC_RANGE_MASK_LENGTH + CIC_RANGE_PC_LENGTH + CIC_RANGE_LOWER_LENGTH + CIC_RANGE_UPPER_LENGTH)
1054 #define CIC_RANGE_MASK_OFFSET             0
1055 #define CIC_RANGE_PC_OFFSET               (CIC_RANGE_MASK_OFFSET + CIC_RANGE_MASK_LENGTH)
1056 #define CIC_RANGE_LOWER_OFFSET            (CIC_RANGE_PC_OFFSET + CIC_RANGE_PC_LENGTH)
1057 #define CIC_RANGE_UPPER_OFFSET            (CIC_RANGE_LOWER_OFFSET + CIC_RANGE_LOWER_LENGTH)
1058
1059 static void
1060 dissect_circuit_range_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1061 {
1062   guint16 length, number_of_point_codes, point_code_number;
1063   gint point_code_offset;
1064   proto_item *pc_item;
1065
1066   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1067   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / CIC_RANGE_LENGTH;
1068
1069   point_code_offset = PARAMETER_VALUE_OFFSET;
1070   for(point_code_number = 1; point_code_number <= number_of_point_codes; point_code_number++) {
1071     proto_tree_add_item(parameter_tree, hf_cic_range_mask,  parameter_tvb, point_code_offset + CIC_RANGE_MASK_OFFSET,  CIC_RANGE_MASK_LENGTH,  NETWORK_BYTE_ORDER);
1072     pc_item = proto_tree_add_item(parameter_tree, hf_cic_range_pc,    parameter_tvb, point_code_offset + CIC_RANGE_PC_OFFSET,    CIC_RANGE_PC_LENGTH,    NETWORK_BYTE_ORDER);
1073     if (mtp3_pc_structured())
1074       proto_item_append_text(pc_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, point_code_offset + CIC_RANGE_PC_OFFSET)));
1075     proto_tree_add_item(parameter_tree, hf_cic_range_lower, parameter_tvb, point_code_offset + CIC_RANGE_LOWER_OFFSET, CIC_RANGE_LOWER_LENGTH, NETWORK_BYTE_ORDER);
1076     proto_tree_add_item(parameter_tree, hf_cic_range_upper, parameter_tvb, point_code_offset + CIC_RANGE_UPPER_OFFSET, CIC_RANGE_UPPER_LENGTH, NETWORK_BYTE_ORDER);
1077     point_code_offset += CIC_RANGE_LENGTH;
1078   };
1079   proto_item_append_text(parameter_item, " (%u range%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1080 }
1081
1082 #define DATA_OPC_LENGTH   4
1083 #define DATA_DPC_LENGTH   4
1084 #define DATA_SI_LENGTH    1
1085 #define DATA_NI_LENGTH    1
1086 #define DATA_MP_LENGTH    1
1087 #define DATA_SLS_LENGTH   1
1088 #define DATA_HDR_LENGTH   (DATA_OPC_LENGTH + DATA_DPC_LENGTH + DATA_SI_LENGTH + DATA_NI_LENGTH + DATA_MP_LENGTH + DATA_SLS_LENGTH)
1089
1090 #define DATA_OPC_OFFSET   PARAMETER_VALUE_OFFSET
1091 #define DATA_DPC_OFFSET   (DATA_OPC_OFFSET + DATA_OPC_LENGTH)
1092 #define DATA_SI_OFFSET    (DATA_DPC_OFFSET + DATA_DPC_LENGTH)
1093 #define DATA_NI_OFFSET    (DATA_SI_OFFSET  + DATA_SI_LENGTH)
1094 #define DATA_MP_OFFSET    (DATA_NI_OFFSET  + DATA_NI_LENGTH)
1095 #define DATA_SLS_OFFSET   (DATA_MP_OFFSET  + DATA_MP_LENGTH)
1096 #define DATA_ULP_OFFSET   (DATA_SLS_OFFSET + DATA_SLS_LENGTH)
1097
1098 static void
1099 dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
1100 {
1101   guint16 ulp_length;
1102   tvbuff_t *payload_tvb;
1103   proto_item *item;
1104
1105
1106   mtp3_addr_dpc.type = mtp3_standard;
1107   mtp3_addr_dpc.pc = tvb_get_ntohl(parameter_tvb,DATA_DPC_OFFSET);
1108   mtp3_addr_dpc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1109   SET_ADDRESS(&pinfo->dst, AT_SS7PC, sizeof(mtp3_addr_dpc), (guint8 *) &mtp3_addr_dpc);
1110
1111
1112   mtp3_addr_opc.type = mtp3_standard;
1113   mtp3_addr_opc.pc = tvb_get_ntohl(parameter_tvb,DATA_OPC_OFFSET);
1114   mtp3_addr_opc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1115   SET_ADDRESS(&pinfo->src, AT_SS7PC, sizeof(mtp3_addr_opc), (guint8 *) &mtp3_addr_opc);
1116
1117   ulp_length  = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - DATA_HDR_LENGTH;
1118
1119   if (parameter_tree) {
1120     item = proto_tree_add_item(parameter_tree, hf_protocol_data_opc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1121     if (mtp3_pc_structured())
1122       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_OPC_OFFSET)));
1123     item = proto_tree_add_item(parameter_tree, hf_protocol_data_dpc, parameter_tvb, DATA_DPC_OFFSET, DATA_DPC_LENGTH, NETWORK_BYTE_ORDER);
1124     if (mtp3_pc_structured())
1125       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_DPC_OFFSET)));
1126     proto_tree_add_item(parameter_tree, hf_protocol_data_si,  parameter_tvb, DATA_SI_OFFSET,  DATA_SI_LENGTH,  NETWORK_BYTE_ORDER);
1127     proto_tree_add_item(parameter_tree, hf_protocol_data_ni,  parameter_tvb, DATA_NI_OFFSET,  DATA_NI_LENGTH,  NETWORK_BYTE_ORDER);
1128     proto_tree_add_item(parameter_tree, hf_protocol_data_mp,  parameter_tvb, DATA_MP_OFFSET,  DATA_MP_LENGTH,  NETWORK_BYTE_ORDER);
1129     proto_tree_add_item(parameter_tree, hf_protocol_data_sls, parameter_tvb, DATA_SLS_OFFSET, DATA_SLS_LENGTH, NETWORK_BYTE_ORDER);
1130
1131     proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", ulp_length, plurality(ulp_length, "", "s"));
1132     proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + DATA_HDR_LENGTH);
1133   }
1134
1135   payload_tvb = tvb_new_subset(parameter_tvb, DATA_ULP_OFFSET, ulp_length, ulp_length);
1136   if (!dissector_try_port(si_dissector_table, tvb_get_guint8(parameter_tvb, DATA_SI_OFFSET), payload_tvb, pinfo, tree))
1137     call_dissector(data_handle, payload_tvb, pinfo, tree);
1138 }
1139
1140 #define CORR_ID_OFFSET PARAMETER_VALUE_OFFSET
1141 #define CORR_ID_LENGTH 4
1142
1143 static void
1144 dissect_correlation_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1145 {
1146   proto_tree_add_item(parameter_tree, hf_correlation_identifier, parameter_tvb, CORR_ID_OFFSET, CORR_ID_LENGTH, NETWORK_BYTE_ORDER);
1147   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CORR_ID_OFFSET));
1148 }
1149
1150 #define REG_STATUS_LENGTH  4
1151 #define REG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1152
1153 static const value_string registration_status_values[] = {
1154   {  0, "Successfully Registered" },
1155   {  1, "Error - Unknown" },
1156   {  2, "Error - Invalid DPC" },
1157   {  3, "Error - Invalid Network Appearance" },
1158   {  4, "Error - Invalid Routing Key" },
1159   {  5, "Error - Permission Denied" },
1160   {  6, "Error - Cannot Support Unique Routing" },
1161   {  7, "Error - Routing Key not Currently Provisioned" },
1162   {  8, "Error - Insufficient Resources" },
1163   {  9, "Error - Unsupported RK parameter Field" },
1164   { 10, "Error - Unsupported/Invalid Traffic Handling Mode" },
1165   { 11, "Error - Routing Key Change Refused" },
1166   { 12, "Error - Routing Key Already Registered" },
1167   {  0, NULL } };
1168
1169 static void
1170 dissect_registration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1171 {
1172   proto_tree_add_item(parameter_tree, hf_registration_status, parameter_tvb, REG_STATUS_OFFSET, REG_STATUS_LENGTH, NETWORK_BYTE_ORDER);
1173   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REG_STATUS_OFFSET), registration_status_values, "unknown"));
1174 }
1175
1176 #define DEREG_STATUS_LENGTH  4
1177 #define DEREG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1178
1179 static const value_string deregistration_status_values[] = {
1180   { 0, "Successfully Deregistered" },
1181   { 1, "Error - Unknown" },
1182   { 2, "Error - Invalid Routing Context" },
1183   { 3, "Error - Permission Denied" },
1184   { 4, "Error - Not Registered" },
1185   { 5, "Error - ASP Currently Active for Routing Context" },
1186   { 0, NULL } };
1187
1188 static void
1189 dissect_deregistration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1190 {
1191   proto_tree_add_item(parameter_tree, hf_deregistration_status, parameter_tvb, DEREG_STATUS_OFFSET, DEREG_STATUS_LENGTH, NETWORK_BYTE_ORDER);
1192   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, DEREG_STATUS_OFFSET), deregistration_status_values, "unknown"));
1193 }
1194
1195 static void
1196 dissect_registration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1197 {
1198   tvbuff_t *parameters_tvb;
1199   guint16 parameters_length;
1200
1201   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1202   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1203   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1204 }
1205
1206 static void
1207 dissect_deregistration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1208 {
1209   tvbuff_t *parameters_tvb;
1210   guint16 parameters_length;
1211
1212   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1213   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1214   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1215 }
1216
1217 static void
1218 dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1219 {
1220   guint16 tag, parameter_value_length;
1221
1222   tag                    = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1223   parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1224   proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER);
1225   proto_item_append_text(parameter_item, " (tag %u and %u byte%s value)", tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
1226 }
1227
1228 #define V5_NETWORK_APPEARANCE_PARAMETER_TAG       1
1229 #define V5_PROTOCOL_DATA_PARAMETER_TAG            3
1230 #define V5_INFO_PARAMETER_TAG                     4
1231 #define V5_AFFECTED_DESTINATIONS_PARAMETER_TAG    5
1232 #define V5_ROUTING_CONTEXT_PARAMETER_TAG          6
1233 #define V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG   7
1234 #define V5_HEARTBEAT_DATA_PARAMETER_TAG           8
1235 #define V5_USER_CAUSE_PARAMETER_TAG               9
1236 #define V5_REASON_PARAMETER_TAG                   10
1237 #define V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG        11
1238 #define V5_ERROR_CODE_PARAMETER_TAG               12
1239 #define V5_STATUS_PARAMETER_TAG                   13
1240 #define V5_CONGESTION_INDICATION_PARAMETER_TAG    14
1241
1242 static const value_string v5_parameter_tag_values[] = {
1243   { V5_NETWORK_APPEARANCE_PARAMETER_TAG,     "Network appearance" },
1244   { V5_PROTOCOL_DATA_PARAMETER_TAG,          "Protocol data" },
1245   { V5_INFO_PARAMETER_TAG,                   "Info" },
1246   { V5_AFFECTED_DESTINATIONS_PARAMETER_TAG,  "Affected destinations" },
1247   { V5_ROUTING_CONTEXT_PARAMETER_TAG,        "Routing context" },
1248   { V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
1249   { V5_HEARTBEAT_DATA_PARAMETER_TAG,         "Heartbeat data" },
1250   { V5_USER_CAUSE_PARAMETER_TAG,             "User / Cause" },
1251   { V5_REASON_PARAMETER_TAG,                 "Reason" },
1252   { V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG,      "Traffic mode type" },
1253   { V5_ERROR_CODE_PARAMETER_TAG,             "Error code" },
1254   { V5_STATUS_PARAMETER_TAG,                 "Status" },
1255   { V5_CONGESTION_INDICATION_PARAMETER_TAG,  "Congestion indication" },
1256   { 0,                                       NULL } };
1257
1258 static void
1259 dissect_v5_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1260 {
1261   guint16 tag, length, padding_length;
1262   proto_item *parameter_item;
1263   proto_tree *parameter_tree;
1264
1265   /* extract tag and length from the parameter */
1266   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1267   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1268   padding_length = tvb_length(parameter_tvb) - length;
1269
1270   if (!tree && tag != V5_PROTOCOL_DATA_PARAMETER_TAG)
1271     return;     /* Nothing to do here */
1272
1273   /* create proto_tree stuff */
1274   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(tag, v5_parameter_tag_values, "Unknown parameter"));
1275   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1276
1277   /* add tag and length to the parameter tree */
1278   proto_tree_add_item(parameter_tree, hf_v5_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1279   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1280
1281   switch(tag) {
1282   case V5_NETWORK_APPEARANCE_PARAMETER_TAG:
1283     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1284     break;
1285   case V5_PROTOCOL_DATA_PARAMETER_TAG:
1286     dissect_v5_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_item);
1287     break;
1288   case V5_INFO_PARAMETER_TAG:
1289     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1290     break;
1291   case V5_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1292     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1293     break;
1294   case V5_ROUTING_CONTEXT_PARAMETER_TAG:
1295     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1296     break;
1297   case V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1298     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1299     break;
1300   case V5_HEARTBEAT_DATA_PARAMETER_TAG:
1301     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1302     break;
1303   case V5_USER_CAUSE_PARAMETER_TAG:
1304     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1305     break;
1306   case V5_REASON_PARAMETER_TAG:
1307     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1308     break;
1309   case V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1310     dissect_v5_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1311     break;
1312   case V5_ERROR_CODE_PARAMETER_TAG:
1313     dissect_v5_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1314     break;
1315   case V5_STATUS_PARAMETER_TAG:
1316     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1317     break;
1318   case V5_CONGESTION_INDICATION_PARAMETER_TAG:
1319     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1320     break;
1321   default:
1322     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1323     break;
1324   };
1325   if (padding_length > 0)
1326     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1327 }
1328
1329 #define V6_NETWORK_APPEARANCE_PARAMETER_TAG            1
1330 #define V6_PROTOCOL_DATA_1_PARAMETER_TAG               2
1331 #define V6_PROTOCOL_DATA_2_PARAMETER_TAG               3
1332 #define V6_INFO_PARAMETER_TAG                          4
1333 #define V6_AFFECTED_DESTINATIONS_PARAMETER_TAG         5
1334 #define V6_ROUTING_CONTEXT_PARAMETER_TAG               6
1335 #define V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        7
1336 #define V6_HEARTBEAT_DATA_PARAMETER_TAG                8
1337 #define V6_USER_CAUSE_PARAMETER_TAG                    9
1338 #define V6_REASON_PARAMETER_TAG                       10
1339 #define V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG            11
1340 #define V6_ERROR_CODE_PARAMETER_TAG                   12
1341 #define V6_STATUS_PARAMETER_TAG                       13
1342 #define V6_CONGESTION_INDICATION_PARAMETER_TAG        14
1343 #define V6_CONCERNED_DESTINATION_PARAMETER_TAG        15
1344 #define V6_ROUTING_KEY_PARAMETER_TAG                  16
1345 #define V6_REGISTRATION_RESULT_PARAMETER_TAG          17
1346 #define V6_DEREGISTRATION_RESULT_PARAMETER_TAG        18
1347 #define V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 19
1348 #define V6_DESTINATION_POINT_CODE_PARAMETER_TAG       20
1349 #define V6_SERVICE_INDICATORS_PARAMETER_TAG           21
1350 #define V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG            22
1351 #define V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  23
1352 #define V6_CIRCUIT_RANGE_PARAMETER_TAG                24
1353 #define V6_REGISTRATION_RESULTS_PARAMETER_TAG         25
1354 #define V6_DEREGISTRATION_RESULTS_PARAMETER_TAG       26
1355
1356 static const value_string v6_parameter_tag_values[] = {
1357   { V6_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1358   { V6_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1359   { V6_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1360   { V6_INFO_PARAMETER_TAG,                         "Info" },
1361   { V6_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1362   { V6_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1363   { V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1364   { V6_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1365   { V6_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1366   { V6_REASON_PARAMETER_TAG,                       "Reason" },
1367   { V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1368   { V6_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1369   { V6_STATUS_PARAMETER_TAG,                       "Status" },
1370   { V6_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1371   { V6_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1372   { V6_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1373   { V6_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1374   { V6_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1375   { V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1376   { V6_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1377   { V6_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1378   { V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1379   { V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1380   { V6_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1381   { V6_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1382   { V6_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1383   { 0,                           NULL } };
1384
1385 static void
1386 dissect_v6_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1387 {
1388   guint16 tag, length, padding_length;
1389   proto_item *parameter_item;
1390   proto_tree *parameter_tree;
1391
1392   /* extract tag and length from the parameter */
1393   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1394   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1395   padding_length = tvb_length(parameter_tvb) - length;
1396
1397   if (!tree && tag != V6_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V6_PROTOCOL_DATA_2_PARAMETER_TAG)
1398     return;     /* Nothing to do here */
1399
1400   /* create proto_tree stuff */
1401   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(tag, v6_parameter_tag_values, "Unknown parameter"));
1402   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1403
1404   /* add tag and length to the parameter tree */
1405   proto_tree_add_item(parameter_tree, hf_v6_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1406   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1407
1408   switch(tag) {
1409   case V6_NETWORK_APPEARANCE_PARAMETER_TAG:
1410     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1411     break;
1412   case V6_PROTOCOL_DATA_1_PARAMETER_TAG:
1413     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1414     break;
1415   case V6_PROTOCOL_DATA_2_PARAMETER_TAG:
1416     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1417     break;
1418   case V6_INFO_PARAMETER_TAG:
1419     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1420     break;
1421   case V6_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1422     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1423     break;
1424   case V6_ROUTING_CONTEXT_PARAMETER_TAG:
1425     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1426     break;
1427   case V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1428     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1429     break;
1430   case V6_HEARTBEAT_DATA_PARAMETER_TAG:
1431     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1432     break;
1433   case V6_USER_CAUSE_PARAMETER_TAG:
1434     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1435     break;
1436   case V6_REASON_PARAMETER_TAG:
1437     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1438     break;
1439   case V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1440     dissect_v6_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1441     break;
1442   case V6_ERROR_CODE_PARAMETER_TAG:
1443     dissect_v6_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1444     break;
1445   case V6_STATUS_PARAMETER_TAG:
1446     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1447     break;
1448   case V6_CONGESTION_INDICATION_PARAMETER_TAG:
1449     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1450     break;
1451   case V6_CONCERNED_DESTINATION_PARAMETER_TAG:
1452     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1453     break;
1454   case V6_ROUTING_KEY_PARAMETER_TAG:
1455     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1456     break;
1457   case V6_REGISTRATION_RESULT_PARAMETER_TAG:
1458     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1459     break;
1460   case V6_DEREGISTRATION_RESULT_PARAMETER_TAG:
1461     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1462     break;
1463   case V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1464     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1465     break;
1466   case V6_DESTINATION_POINT_CODE_PARAMETER_TAG:
1467     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1468     break;
1469   case V6_SERVICE_INDICATORS_PARAMETER_TAG:
1470     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1471     break;
1472   case V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1473     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1474     break;
1475   case V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1476     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1477     break;
1478   case V6_CIRCUIT_RANGE_PARAMETER_TAG:
1479     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1480     break;
1481   case V6_REGISTRATION_RESULTS_PARAMETER_TAG:
1482     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1483     break;
1484   case V6_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1485     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1486     break;
1487   default:
1488     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1489     break;
1490   };
1491
1492   if (padding_length > 0)
1493     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1494 }
1495
1496 #define V7_NETWORK_APPEARANCE_PARAMETER_TAG            0x80
1497 #define V7_PROTOCOL_DATA_1_PARAMETER_TAG               0x81
1498 #define V7_PROTOCOL_DATA_2_PARAMETER_TAG               0x82
1499 #define V7_INFO_PARAMETER_TAG                          0x04
1500 #define V7_AFFECTED_DESTINATIONS_PARAMETER_TAG         0x83
1501 #define V7_ROUTING_CONTEXT_PARAMETER_TAG               0x06
1502 #define V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        0x07
1503 #define V7_HEARTBEAT_DATA_PARAMETER_TAG                0x09
1504 #define V7_USER_CAUSE_PARAMETER_TAG                    0x84
1505 #define V7_REASON_PARAMETER_TAG                        0x0a
1506 #define V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG             0x0b
1507 #define V7_ERROR_CODE_PARAMETER_TAG                    0x0c
1508 #define V7_STATUS_PARAMETER_TAG                        0x0d
1509 #define V7_CONGESTION_INDICATION_PARAMETER_TAG         0x85
1510 #define V7_CONCERNED_DESTINATION_PARAMETER_TAG         0x86
1511 #define V7_ROUTING_KEY_PARAMETER_TAG                   0x87
1512 #define V7_REGISTRATION_RESULT_PARAMETER_TAG           0x88
1513 #define V7_DEREGISTRATION_RESULT_PARAMETER_TAG         0x89
1514 #define V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG  0x8a
1515 #define V7_DESTINATION_POINT_CODE_PARAMETER_TAG        0x8b
1516 #define V7_SERVICE_INDICATORS_PARAMETER_TAG            0x8c
1517 #define V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG             0x8d
1518 #define V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG   0x8e
1519 #define V7_CIRCUIT_RANGE_PARAMETER_TAG                 0x8f
1520 #define V7_REGISTRATION_RESULTS_PARAMETER_TAG          0x90
1521 #define V7_DEREGISTRATION_RESULTS_PARAMETER_TAG        0x91
1522
1523 static const value_string v7_parameter_tag_values[] = {
1524   { V7_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1525   { V7_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1526   { V7_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1527   { V7_INFO_PARAMETER_TAG,                         "Info" },
1528   { V7_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1529   { V7_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1530   { V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1531   { V7_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1532   { V7_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1533   { V7_REASON_PARAMETER_TAG,                       "Reason" },
1534   { V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1535   { V7_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1536   { V7_STATUS_PARAMETER_TAG,                       "Status" },
1537   { V7_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1538   { V7_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1539   { V7_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1540   { V7_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1541   { V7_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1542   { V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1543   { V7_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1544   { V7_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1545   { V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1546   { V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1547   { V7_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1548   { V7_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1549   { V7_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1550   { 0,                           NULL } };
1551
1552 static void
1553 dissect_v7_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1554 {
1555   guint16 tag, length, padding_length;
1556   proto_item *parameter_item;
1557   proto_tree *parameter_tree;
1558
1559   /* extract tag and length from the parameter */
1560   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1561   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1562   padding_length = tvb_length(parameter_tvb) - length;
1563
1564   if (!tree && tag != V7_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V7_PROTOCOL_DATA_2_PARAMETER_TAG)
1565     return;     /* Nothing to do here */
1566
1567   /* create proto_tree stuff */
1568   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(tag, v7_parameter_tag_values, "Unknown parameter"));
1569   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1570
1571   /* add tag and length to the parameter tree */
1572   proto_tree_add_item(parameter_tree, hf_v7_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1573   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1574
1575   switch(tag) {
1576   case V7_NETWORK_APPEARANCE_PARAMETER_TAG:
1577     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1578     break;
1579   case V7_PROTOCOL_DATA_1_PARAMETER_TAG:
1580     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1581     break;
1582   case V7_PROTOCOL_DATA_2_PARAMETER_TAG:
1583     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1584     break;
1585   case V7_INFO_PARAMETER_TAG:
1586     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1587     break;
1588   case V7_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1589     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1590     break;
1591   case V7_ROUTING_CONTEXT_PARAMETER_TAG:
1592     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1593     break;
1594   case V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1595     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1596     break;
1597   case V7_HEARTBEAT_DATA_PARAMETER_TAG:
1598     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1599     break;
1600   case V7_USER_CAUSE_PARAMETER_TAG:
1601     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1602     break;
1603   case V7_REASON_PARAMETER_TAG:
1604     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1605     break;
1606   case V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1607     dissect_v7_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1608     break;
1609   case V7_ERROR_CODE_PARAMETER_TAG:
1610     dissect_v7_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1611     break;
1612   case V7_STATUS_PARAMETER_TAG:
1613     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1614     break;
1615   case V7_CONGESTION_INDICATION_PARAMETER_TAG:
1616     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1617     break;
1618   case V7_CONCERNED_DESTINATION_PARAMETER_TAG:
1619     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1620     break;
1621   case V7_ROUTING_KEY_PARAMETER_TAG:
1622     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1623     break;
1624   case V7_REGISTRATION_RESULT_PARAMETER_TAG:
1625     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1626     break;
1627   case V7_DEREGISTRATION_RESULT_PARAMETER_TAG:
1628     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1629     break;
1630   case V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1631     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1632     break;
1633   case V7_DESTINATION_POINT_CODE_PARAMETER_TAG:
1634     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1635     break;
1636   case V7_SERVICE_INDICATORS_PARAMETER_TAG:
1637     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1638     break;
1639   case V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1640     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1641     break;
1642   case V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1643     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1644     break;
1645   case V7_CIRCUIT_RANGE_PARAMETER_TAG:
1646     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1647     break;
1648   case V7_REGISTRATION_RESULTS_PARAMETER_TAG:
1649     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1650     break;
1651   case V7_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1652     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1653     break;
1654   default:
1655     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1656     break;
1657   };
1658
1659   if (padding_length > 0)
1660     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1661 }
1662
1663 #define INFO_STRING_PARAMETER_TAG                  0x0004
1664 #define ROUTING_CONTEXT_PARAMETER_TAG              0x0006
1665 #define DIAGNOSTIC_INFORMATION_PARAMETER_TAG       0x0007
1666 #define HEARTBEAT_DATA_PARAMETER_TAG               0x0009
1667 #define TRAFFIC_MODE_TYPE_PARAMETER_TAG            0x000b
1668 #define ERROR_CODE_PARAMETER_TAG                   0x000c
1669 #define STATUS_PARAMETER_TAG                       0x000d
1670 #define ASP_IDENTIFIER_PARAMETER_TAG               0x0011
1671 #define AFFECTED_POINT_CODE_PARAMETER_TAG          0x0012
1672 #define CORRELATION_IDENTIFIER_PARAMETER_TAG       0x0013
1673
1674 #define NETWORK_APPEARANCE_PARAMETER_TAG           0x0200
1675 #define USER_CAUSE_PARAMETER_TAG                   0x0204
1676 #define CONGESTION_INDICATIONS_PARAMETER_TAG       0x0205
1677 #define CONCERNED_DESTINATION_PARAMETER_TAG        0x0206
1678 #define ROUTING_KEY_PARAMETER_TAG                  0x0207
1679 #define REGISTRATION_RESULT_PARAMETER_TAG          0x0208
1680 #define DEREGISTRATION_RESULT_PARAMETER_TAG        0x0209
1681 #define LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 0x020a
1682 #define DESTINATION_POINT_CODE_PARAMETER_TAG       0x020b
1683 #define SERVICE_INDICATORS_PARAMETER_TAG           0x020c
1684 #define ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  0x020e
1685 #define CIRCUIT_RANGE_PARAMETER_TAG                0x020f
1686 #define PROTOCOL_DATA_PARAMETER_TAG                0x0210
1687 #define REGISTRATION_STATUS_PARAMETER_TAG          0x0212
1688 #define DEREGISTRATION_STATUS_PARAMETER_TAG        0x0213
1689
1690 static const value_string parameter_tag_values[] = {
1691   { INFO_STRING_PARAMETER_TAG,                  "Info string" } ,
1692   { ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" } ,
1693   { DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic Information" } ,
1694   { HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" } ,
1695   { TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" } ,
1696   { ERROR_CODE_PARAMETER_TAG,                   "Error code" } ,
1697   { STATUS_PARAMETER_TAG,                       "Status" } ,
1698   { ASP_IDENTIFIER_PARAMETER_TAG,               "ASP identifier" } ,
1699   { AFFECTED_POINT_CODE_PARAMETER_TAG,          "Affected point code" } ,
1700   { CORRELATION_IDENTIFIER_PARAMETER_TAG,       "Correlation identifier" } ,
1701   { NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" } ,
1702   { USER_CAUSE_PARAMETER_TAG,                   "User / cause" } ,
1703   { CONGESTION_INDICATIONS_PARAMETER_TAG,       "Congestion indications" } ,
1704   { CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" } ,
1705   { ROUTING_KEY_PARAMETER_TAG,                  "Routing key" } ,
1706   { REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" } ,
1707   { DEREGISTRATION_RESULT_PARAMETER_TAG,        "Deregistration result" } ,
1708   { LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" } ,
1709   { DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" } ,
1710   { SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" } ,
1711   { ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" } ,
1712   { CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" } ,
1713   { PROTOCOL_DATA_PARAMETER_TAG,                "Protocol data" } ,
1714   { REGISTRATION_STATUS_PARAMETER_TAG,          "Registration status" } ,
1715   { DEREGISTRATION_STATUS_PARAMETER_TAG,        "Deregistration status" } ,
1716   { 0,                           NULL } };
1717
1718 static void
1719 dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1720 {
1721   guint16 tag, length, padding_length;
1722   proto_item *parameter_item;
1723   proto_tree *parameter_tree;
1724
1725   /* extract tag and length from the parameter */
1726   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1727   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1728   padding_length = tvb_length(parameter_tvb) - length;
1729
1730
1731   if (!tree && tag != PROTOCOL_DATA_PARAMETER_TAG)
1732     return;     /* Nothing to do here */
1733
1734   /* create proto_tree stuff */
1735   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(tag, parameter_tag_values, "Unknown parameter"));
1736   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1737
1738   /* add tag and length to the parameter tree */
1739   proto_tree_add_item(parameter_tree, hf_parameter_tag,    parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1740   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1741
1742   switch(tag) {
1743   case INFO_STRING_PARAMETER_TAG:
1744     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1745     break;
1746   case ROUTING_CONTEXT_PARAMETER_TAG:
1747     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1748     break;
1749   case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1750     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1751     break;
1752   case HEARTBEAT_DATA_PARAMETER_TAG:
1753     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1754     break;
1755   case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1756     dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1757     break;
1758   case ERROR_CODE_PARAMETER_TAG:
1759     dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1760     break;
1761   case STATUS_PARAMETER_TAG:
1762     dissect_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1763     break;
1764   case ASP_IDENTIFIER_PARAMETER_TAG:
1765     dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1766     break;
1767   case AFFECTED_POINT_CODE_PARAMETER_TAG:
1768     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1769     break;
1770   case NETWORK_APPEARANCE_PARAMETER_TAG:
1771     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1772     break;
1773   case USER_CAUSE_PARAMETER_TAG:
1774     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1775     break;
1776   case CONGESTION_INDICATIONS_PARAMETER_TAG:
1777     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1778     break;
1779   case CONCERNED_DESTINATION_PARAMETER_TAG:
1780     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1781     break;
1782   case ROUTING_KEY_PARAMETER_TAG:
1783     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1784     break;
1785   case REGISTRATION_RESULT_PARAMETER_TAG:
1786     dissect_registration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1787     break;
1788   case DEREGISTRATION_RESULT_PARAMETER_TAG:
1789     dissect_deregistration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1790     break;
1791   case LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1792     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1793     break;
1794   case DESTINATION_POINT_CODE_PARAMETER_TAG:
1795     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1796     break;
1797   case SERVICE_INDICATORS_PARAMETER_TAG:
1798     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1799     break;
1800   case ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1801     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1802     break;
1803   case CIRCUIT_RANGE_PARAMETER_TAG:
1804     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1805     break;
1806   case PROTOCOL_DATA_PARAMETER_TAG:
1807     dissect_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1808     break;
1809   case CORRELATION_IDENTIFIER_PARAMETER_TAG:
1810     dissect_correlation_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1811     break;
1812   case REGISTRATION_STATUS_PARAMETER_TAG:
1813     dissect_registration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1814     break;
1815   case DEREGISTRATION_STATUS_PARAMETER_TAG:
1816     dissect_deregistration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1817     break;
1818   default:
1819     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1820     break;
1821   };
1822
1823   if (padding_length > 0)
1824     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1825 }
1826
1827 static void
1828 dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1829 {
1830   gint offset, length, total_length, remaining_length;
1831   tvbuff_t *parameter_tvb;
1832
1833   offset = 0;
1834   while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
1835     length       = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
1836     total_length = ADD_PADDING(length);
1837     if (remaining_length >= length)
1838       total_length = MIN(total_length, remaining_length);
1839     /* create a tvb for the parameter including the padding bytes */
1840     parameter_tvb    = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
1841     switch(version) {
1842       case M3UA_V5:
1843         dissect_v5_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1844         break;
1845       case M3UA_V6:
1846         dissect_v6_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1847         break;
1848       case M3UA_V7:
1849         dissect_v7_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1850         break;
1851       case M3UA_RFC:
1852         dissect_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1853         break;
1854     }
1855     /* get rid of the handled parameter */
1856     offset += total_length;
1857   }
1858 }
1859
1860
1861 static void
1862 dissect_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1863 {
1864   tvbuff_t *common_header_tvb, *parameters_tvb;
1865
1866   common_header_tvb = tvb_new_subset(message_tvb, 0, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
1867   parameters_tvb    = tvb_new_subset(message_tvb, COMMON_HEADER_LENGTH, -1, -1);
1868   if (version == M3UA_V5)
1869         dissect_v5_common_header(common_header_tvb, pinfo, m3ua_tree);
1870   else
1871     dissect_common_header(common_header_tvb, pinfo, m3ua_tree);
1872
1873   /*  Need to dissect (certain) parameters even when !tree, so subdissectors
1874    *  (e.g., MTP3) are always called.
1875    */
1876   dissect_parameters(parameters_tvb, pinfo, tree, m3ua_tree);
1877 }
1878
1879 static void
1880 dissect_m3ua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
1881 {
1882   proto_item *m3ua_item;
1883   proto_tree *m3ua_tree;
1884
1885   /* make entry in the Protocol column on summary display */
1886   if (check_col(pinfo->cinfo, COL_PROTOCOL))
1887     switch(version) {
1888       case M3UA_V5:
1889         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 05)");
1890         break;
1891       case M3UA_V6:
1892         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 06)");
1893         break;
1894       case M3UA_V7:
1895         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 07)");
1896         break;
1897       case M3UA_RFC:
1898         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (RFC 3332)");
1899         break;
1900       };
1901
1902   /* In the interest of speed, if "tree" is NULL, don't do any work not
1903      necessary to generate protocol tree items. */
1904   if (tree) {
1905     /* create the m3ua protocol tree */
1906     m3ua_item = proto_tree_add_item(tree, proto_m3ua, message_tvb, 0, -1, FALSE);
1907     m3ua_tree = proto_item_add_subtree(m3ua_item, ett_m3ua);
1908   } else {
1909     m3ua_tree = NULL;
1910   };
1911
1912   /* dissect the message */
1913   dissect_message(message_tvb, pinfo, tree, m3ua_tree);
1914 }
1915
1916 /* Register the protocol with Wireshark */
1917 void
1918 proto_register_m3ua(void)
1919 {
1920
1921   /* Setup list of header fields */
1922   static hf_register_info hf[] = {
1923     { &hf_version,                          { "Version",                      "m3ua.version",                               FT_UINT8,  BASE_DEC,  VALS(protocol_version_values),                0x0, "", HFILL } },
1924     { &hf_reserved,                         { "Reserved",                     "m3ua.reserved",                              FT_UINT8,  BASE_HEX,  NULL,                                         0x0, "", HFILL } },
1925     { &hf_v5_message_class,                 { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(v5_message_class_values),                0x0, "", HFILL } },
1926     { &hf_message_class,                    { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(message_class_values),                   0x0, "", HFILL } },
1927     { &hf_message_type,                     { "Message Type",                 "m3ua.message_type",                          FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1928     { &hf_message_length,                   { "Message length",               "m3ua.message_length",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1929     { &hf_v5_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v5_parameter_tag_values),                0x0, "", HFILL } },
1930     { &hf_v6_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v6_parameter_tag_values),                0x0, "", HFILL } },
1931     { &hf_v7_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v7_parameter_tag_values),                0x0, "", HFILL } },
1932     { &hf_parameter_tag,                    { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(parameter_tag_values),                   0x0, "", HFILL } },
1933     { &hf_parameter_length,                 { "Parameter length",             "m3ua.parameter_length",                      FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1934     { &hf_parameter_value,                  { "Parameter value",              "m3ua.parameter_value",                       FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1935     { &hf_parameter_padding,                { "Padding",                      "m3ua.parameter_padding",                     FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1936     { &hf_parameter_trailer,                { "Trailer",                      "m3ua.paramter_trailer",                      FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1937     { &hf_network_appearance,               { "Network appearance",           "m3ua.network_appearance",                    FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1938     { &hf_info_string,                      { "Info string",                  "m3ua.info_string",                           FT_STRING, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1939     { &hf_routing_context,                  { "Routing context",              "m3ua.routing_context",                       FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1940     { &hf_diagnostic_information,           { "Diagnostic information",       "m3ua.diagnostic_information",                FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1941     { &hf_heartbeat_data,                   { "Heartbeat data",               "m3ua.heartbeat_data",                        FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1942     { &hf_v5_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v5_error_code_values),                   0x0, "", HFILL } },
1943     { &hf_v6_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v6_error_code_values),                   0x0, "", HFILL } },
1944     { &hf_v7_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v7_error_code_values),                   0x0, "", HFILL } },
1945     { &hf_error_code,                       { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(error_code_values),                      0x0, "", HFILL } },
1946     { &hf_status_type,                      { "Status type",                  "m3ua.status_type",                           FT_UINT16, BASE_DEC,  VALS(status_type_values),                     0x0, "", HFILL } },
1947     { &hf_status_info,                      { "Status info",                  "m3ua.status_info",                           FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1948     { &hf_asp_identifier,                   { "ASP identifier",               "m3ua.asp_identifier",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1949     { &hf_affected_point_code_mask,         { "Mask",                         "m3ua.affected_point_code_mask",              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1950     { &hf_affected_point_code_pc,           { "Affected point code",          "m3ua.affected_point_code_pc",                FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1951     { &hf_cause,                            { "Unavailability cause",         "m3ua.unavailability_cause",                  FT_UINT16, BASE_DEC,  VALS(unavailability_cause_values),            0x0, "", HFILL } },
1952     { &hf_user,                             { "User Identity",                "m3ua.user_identity",                         FT_UINT16, BASE_DEC,  VALS(user_identity_values),                   0x0, "", HFILL } },
1953     { &hf_reason,                           { "Reason",                       "m3ua.reason",                                FT_UINT32, BASE_DEC,  VALS(reason_values),                          0x0, "", HFILL } },
1954     { &hf_v5_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v5_traffic_mode_type_values),            0x0, "", HFILL } },
1955     { &hf_v6_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v6_traffic_mode_type_values),            0x0, "", HFILL } },
1956     { &hf_v7_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v7_traffic_mode_type_values),            0x0, "", HFILL } },
1957     { &hf_traffic_mode_type,                { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(traffic_mode_type_values),               0x0, "", HFILL } },
1958     { &hf_congestion_reserved,              { "Reserved",                     "m3ua.congestion_reserved",                   FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1959     { &hf_congestion_level,                 { "Congestion level",             "m3ua.congestion_level",                      FT_UINT8,  BASE_DEC,  VALS(congestion_level_values),                0x0, "", HFILL } },
1960     { &hf_concerned_dest_reserved,          { "Reserved",                     "m3ua.concerned_reserved",                    FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1961     { &hf_concerned_dest_pc,                { "Concerned DPC",                "m3ua.concerned_dpc",                         FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1962     { &hf_local_rk_identifier,              { "Local routing key identifier", "m3ua.local_rk_identifier",                   FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1963     { &hf_dpc_mask,                         { "Mask",                         "m3ua.dpc_mask",                              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1964     { &hf_dpc_pc,                           { "Destination point code",       "m3ua.dpc_pc",                                FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1965     { &hf_si,                               { "Service indicator",            "m3ua.si",                                    FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                   0x0, "", HFILL } },
1966     { &hf_ssn,                              { "Subsystem number",             "m3ua.ssn",                                   FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1967     { &hf_opc_list_mask,                    { "Mask",                         "m3ua.opc_list_mask",                         FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1968     { &hf_opc_list_pc,                      { "Originating point code",       "m3ua.opc_list_pc",                           FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1969     { &hf_cic_range_mask,                   { "Mask",                         "m3ua.cic_range_mask",                        FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1970     { &hf_cic_range_pc,                     { "Originating point code",       "m3ua.cic_range_pc",                          FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1971     { &hf_cic_range_lower,                  { "Lower CIC value",              "m3ua.cic_range_lower",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1972     { &hf_cic_range_upper,                  { "Upper CIC value",              "m3ua.cic_range_upper",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1973     { &hf_li,                               { "Length indicator",             "m3ua.protocol_data_2_li",                    FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1974     { &hf_protocol_data_opc,                { "OPC",                          "m3ua.protocol_data_opc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1975     { &hf_protocol_data_dpc,                { "DPC",                          "m3ua.protocol_data_dpc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1976     { &hf_protocol_data_si,                 { "SI",                           "m3ua.protocol_data_si",                      FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                                         0x0, "", HFILL } },
1977     { &hf_protocol_data_ni,                 { "NI",                           "m3ua.protocol_data_ni",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1978     { &hf_protocol_data_mp,                 { "MP",                           "m3ua.protocol_data_mp",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1979     { &hf_protocol_data_sls,                { "SLS",                          "m3ua.protocol_data_sls",                     FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1980     { &hf_correlation_identifier,           { "Correlation Identifier",       "m3ua.correlation_identifier",                FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1981     { &hf_registration_status,              { "Registration status",          "m3ua.registration_status",                   FT_UINT32, BASE_DEC,  VALS(registration_status_values),             0x0, "", HFILL } },
1982     { &hf_deregistration_status,            { "Deregistration status",        "m3ua.deregistration_status",                 FT_UINT32, BASE_DEC,  VALS(deregistration_status_values),           0x0, "", HFILL } },
1983     { &hf_registration_result_identifier,   { "Local RK-identifier value",    "m3ua.registration_result_identifier",        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1984     { &hf_registration_result_status,       { "Registration status",          "m3ua.registration_results_status",           FT_UINT32, BASE_DEC,  VALS(registration_result_status_values),      0x0, "", HFILL } },
1985     { &hf_registration_result_context,      { "Routing context",              "m3ua.registration_result_routing_context",   FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1986     { &hf_v6_deregistration_result_status,  { "De-Registration status",       "m3ua.deregistration_results_status",         FT_UINT32, BASE_DEC,  VALS(v6_deregistration_result_status_values), 0x0, "", HFILL } },
1987     { &hf_v6_deregistration_result_context, { "Routing context",              "m3ua.deregistration_result_routing_context", FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1988   };
1989
1990   /* Setup protocol subtree array */
1991   static gint *ett[] = {
1992     &ett_m3ua,
1993     &ett_parameter,
1994   };
1995
1996   static enum_val_t options[] = {
1997     { "draft-5", "Internet Draft version 5",        M3UA_V5  },
1998     { "draft-6", "Internet Draft version 6",        M3UA_V6  },
1999     { "draft-7", "Internet Draft version 7",        M3UA_V7  },
2000     { "rfc3332", "RFC 3332",                        M3UA_RFC },
2001     { NULL, NULL, 0 }
2002   };
2003
2004   /* Register the protocol name and description */
2005   proto_m3ua = proto_register_protocol("MTP 3 User Adaptation Layer", "M3UA",  "m3ua");
2006   register_dissector("m3ua", dissect_m3ua, proto_m3ua);
2007
2008   m3ua_module = prefs_register_protocol(proto_m3ua, NULL);
2009   prefs_register_enum_preference(m3ua_module, "version", "M3UA Version", "Version used by Wireshark", &version, options, FALSE);
2010
2011   /* Required function calls to register the header fields and subtrees used */
2012   proto_register_field_array(proto_m3ua, hf, array_length(hf));
2013   proto_register_subtree_array(ett, array_length(ett));
2014
2015 }
2016
2017 void
2018 proto_reg_handoff_m3ua(void)
2019 {
2020   dissector_handle_t m3ua_handle;
2021
2022   /*
2023    * Get a handle for the MTP3 dissector.
2024    */
2025   mtp3_handle = find_dissector("mtp3");
2026   data_handle = find_dissector("data");
2027   m3ua_handle = create_dissector_handle(dissect_m3ua, proto_m3ua);
2028   dissector_add("sctp.ppi",  M3UA_PAYLOAD_PROTOCOL_ID, m3ua_handle);
2029   dissector_add("sctp.port", SCTP_PORT_M3UA, m3ua_handle);
2030
2031   si_dissector_table = find_dissector_table("mtp3.service_indicator");
2032 }