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 #include "tap.h"
  51
  52 #define SCTP_PORT_M3UA         2905
  53 #define NETWORK_BYTE_ORDER     FALSE
  54 #define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
  55
  56 #define VERSION_LENGTH         1
  57 #define RESERVED_LENGTH        1
  58 #define MESSAGE_CLASS_LENGTH   1
  59 #define MESSAGE_TYPE_LENGTH    1
  60 #define MESSAGE_LENGTH_LENGTH  4
  61 #define COMMON_HEADER_LENGTH   (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
  62                                 MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
  63
  64 #define VERSION_OFFSET         0
  65 #define RESERVED_OFFSET        (VERSION_OFFSET + VERSION_LENGTH)
  66 #define MESSAGE_CLASS_OFFSET   (RESERVED_OFFSET + RESERVED_LENGTH)
  67 #define MESSAGE_TYPE_OFFSET    (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
  68 #define MESSAGE_LENGTH_OFFSET  (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
  69
  70 #define PARAMETER_TAG_LENGTH    2
  71 #define PARAMETER_LENGTH_LENGTH 2
  72 #define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
  73
  74 #define PARAMETER_TAG_OFFSET    0
  75 #define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
  76 #define PARAMETER_VALUE_OFFSET  (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
  77 #define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
  78
  79 #define PROTOCOL_VERSION_RELEASE_1             1
  80
  81 static const value_string protocol_version_values[] = {
  82   { PROTOCOL_VERSION_RELEASE_1,  "Release 1" },
  83   { 0,                           NULL } };
  84
  85 #define MESSAGE_CLASS_MGMT_MESSAGE        0
  86 #define MESSAGE_CLASS_TFER_MESSAGE        1
  87 #define MESSAGE_CLASS_SSNM_MESSAGE        2
  88 #define MESSAGE_CLASS_ASPSM_MESSAGE       3
  89 #define MESSAGE_CLASS_ASPTM_MESSAGE       4
  90 #define MESSAGE_CLASS_RKM_MESSAGE         9
  91
  92 static const value_string message_class_values[] = {
  93   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
  94   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
  95   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
  96   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
  97   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
  98   { MESSAGE_CLASS_RKM_MESSAGE,    "Routing key management messages" },
  99   { 0,                           NULL } };
 100
 101 static const value_string v5_message_class_values[] = {
 102   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
 103   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
 104   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
 105   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
 106   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
 107   { 0,                           NULL } };
 108
 109 #define MESSAGE_TYPE_ERR                  0
 110 #define MESSAGE_TYPE_NTFY                 1
 111
 112 #define MESSAGE_TYPE_DATA                 1
 113
 114 #define MESSAGE_TYPE_DUNA                 1
 115 #define MESSAGE_TYPE_DAVA                 2
 116 #define MESSAGE_TYPE_DAUD                 3
 117 #define MESSAGE_TYPE_SCON                 4
 118 #define MESSAGE_TYPE_DUPU                 5
 119 #define MESSAGE_TYPE_DRST                 6
 120
 121 #define MESSAGE_TYPE_UP                   1
 122 #define MESSAGE_TYPE_DOWN                 2
 123 #define MESSAGE_TYPE_BEAT                 3
 124 #define MESSAGE_TYPE_UP_ACK               4
 125 #define MESSAGE_TYPE_DOWN_ACK             5
 126 #define MESSAGE_TYPE_BEAT_ACK             6
 127
 128 #define MESSAGE_TYPE_ACTIVE               1
 129 #define MESSAGE_TYPE_INACTIVE             2
 130 #define MESSAGE_TYPE_ACTIVE_ACK           3
 131 #define MESSAGE_TYPE_INACTIVE_ACK         4
 132
 133 #define MESSAGE_TYPE_REG_REQ              1
 134 #define MESSAGE_TYPE_REG_RSP              2
 135 #define MESSAGE_TYPE_DEREG_REQ            3
 136 #define MESSAGE_TYPE_DEREG_RSP            4
 137
 138 static const value_string v5_message_class_type_values[] = {
 139   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 140   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 141   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 142   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 143   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 144   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 145   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 146   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 147   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (UP)" },
 148   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (DOWN)" },
 149   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 150   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (UP ACK)" },
 151   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (DOWN ACK)" },
 152   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT ACK)" },
 153   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ACTIVE)" },
 154   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (INACTIVE)" },
 155   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ACTIVE ACK)" },
 156   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (INACTIVE ACK)" },
 157   { 0,                                                              NULL } };
 158
 159 static const value_string message_class_type_values[] = {
 160   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 161   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 162   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 163   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 164   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 165   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 166   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 167   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 168   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "Destination Restricted (DRST)" },
 169   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (ASPUP)" },
 170   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (ASPDN)" },
 171   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 172   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (ASPUP_ACK)" },
 173   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (ASPDN_ACK)" },
 174   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT_ACK)" },
 175   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ASPAC)" },
 176   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (ASPIA)" },
 177   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ASPAC_ACK)" },
 178   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (ASPIA_ACK)" },
 179   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "Registration request (REG_REQ)" },
 180   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "Registration response (REG_RSP)" },
 181   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "Deregistration request (DEREG_REQ)" },
 182   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "Deregistration response (DEREG_RSP)" },
 183   { 0,                           NULL } };
 184
 185 static const value_string v5_message_class_type_acro_values[] = {
 186   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 187   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 188   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 189   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 190   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 191   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 192   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 193   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 194   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP_UP" },
 195   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP_DOWN" },
 196   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 197   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP_UP_ACK" },
 198   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP_DOWN_ACK" },
 199   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 200   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP_ACTIVE" },
 201   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP_INACTIVE" },
 202   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP_ACTIVE_ACK" },
 203   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
 204   { 0,                                                              NULL } };
 205
 206 static const value_string message_class_type_acro_values[] = {
 207   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 208   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 209   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 210   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 211   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 212   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 213   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 214   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 215   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "DRST" },
 216   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASPUP" },
 217   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASPDN" },
 218   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 219   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASPUP_ACK" },
 220   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASPDN_ACK" },
 221   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 222   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASPAC" },
 223   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASPIA" },
 224   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASPAC_ACK" },
 225   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASPIA_ACK" },
 226   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "REG_REQ" },
 227   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "REG_RSP" },
 228   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "DEREG_REQ" },
 229   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "DEREG_RSP" },
 230   { 0,                           NULL } };
 231
 232 /* Initialize the protocol and registered fields */
 233 static int proto_m3ua = -1;
 234 static int hf_version = -1;
 235 static int hf_reserved = -1;
 236 static int hf_message_class = -1;
 237 static int hf_v5_message_class = -1;
 238 static int hf_message_type = -1;
 239 static int hf_message_length = -1;
 240 static int hf_v5_parameter_tag = -1;
 241 static int hf_v6_parameter_tag = -1;
 242 static int hf_v7_parameter_tag = -1;
 243 static int hf_parameter_tag = -1;
 244 static int hf_parameter_length = -1;
 245 static int hf_parameter_value = -1;
 246 static int hf_parameter_padding = -1;
 247 static int hf_parameter_trailer = -1;
 248 static int hf_network_appearance = -1;
 249 static int hf_info_string = -1;
 250 static int hf_routing_context = -1;
 251 static int hf_diagnostic_information = -1;
 252 static int hf_heartbeat_data = -1;
 253 static int hf_v5_error_code = -1;
 254 static int hf_v6_error_code = -1;
 255 static int hf_v7_error_code = -1;
 256 static int hf_error_code = -1;
 257 static int hf_status_type = -1;
 258 static int hf_status_info = -1;
 259 static int hf_asp_identifier = -1;
 260 static int hf_affected_point_code_mask = -1;
 261 static int hf_affected_point_code_pc = -1;
 262 static int hf_cause = -1;
 263 static int hf_user = -1;
 264 static int hf_reason = -1;
 265 static int hf_v5_traffic_mode_type = -1;
 266 static int hf_v6_traffic_mode_type = -1;
 267 static int hf_v7_traffic_mode_type = -1;
 268 static int hf_traffic_mode_type = -1;
 269 static int hf_congestion_reserved = -1;
 270 static int hf_congestion_level = -1;
 271 static int hf_concerned_dest_reserved = -1;
 272 static int hf_concerned_dest_pc = -1;
 273 static int hf_local_rk_identifier = -1;
 274 static int hf_dpc_mask = -1;
 275 static int hf_dpc_pc = -1;
 276 static int hf_si = -1;
 277 static int hf_ssn = -1;
 278 static int hf_opc_list_mask = -1;
 279 static int hf_opc_list_pc = -1;
 280 static int hf_cic_range_mask = -1;
 281 static int hf_cic_range_pc = -1;
 282 static int hf_cic_range_upper = -1;
 283 static int hf_cic_range_lower = -1;
 284 static int hf_protocol_data_opc = -1;
 285 static int hf_protocol_data_dpc = -1;
 286 static int hf_protocol_data_mtp3_opc = -1;
 287 static int hf_protocol_data_mtp3_dpc = -1;
 288 static int hf_protocol_data_mtp3_pc = -1;
 289 static int hf_protocol_data_si = -1;
 290 static int hf_protocol_data_ni = -1;
 291 static int hf_protocol_data_mtp3_ni = -1;
 292 static int hf_protocol_data_mp = -1;
 293 static int hf_protocol_data_sls = -1;
 294 static int hf_correlation_identifier = -1;
 295 static int hf_registration_status = -1;
 296 static int hf_deregistration_status = -1;
 297 static int hf_registration_result_identifier = -1;
 298 static int hf_registration_result_status = -1;
 299 static int hf_registration_result_context = -1;
 300 static int hf_v6_deregistration_result_status = -1;
 301 static int hf_v6_deregistration_result_context = -1;
 302 static int hf_li = -1;
 303
 304
 305 static int m3ua_tap = -1;
 306
 307 /* Initialize the subtree pointers */
 308 static gint ett_m3ua = -1;
 309 static gint ett_parameter = -1;
 310 static gint ett_mtp3_equiv = -1;
 311
 312 static module_t *m3ua_module;
 313 static dissector_handle_t mtp3_handle, data_handle;
 314 static dissector_table_t si_dissector_table;
 315
 316 /* stuff for supporting multiple versions */
 317 typedef enum {
 318   M3UA_V5,
 319   M3UA_V6,
 320   M3UA_V7,
 321   M3UA_RFC
 322 } Version_Type;
 323
 324 static gint version = M3UA_RFC;
 325
 326
 327
 328 static void
 329 dissect_parameters(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
 330
 331 static void
 332 dissect_v5_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 333 {
 334   guint8  message_class, message_type;
 335
 336   /* Extract the common header */
 337   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 338   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 339
 340   if (check_col(pinfo->cinfo, COL_INFO))
 341     col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(message_class * 256 + message_type, v5_message_class_type_acro_values, "reserved"));
 342
 343   if (m3ua_tree) {
 344     /* add the components of the common header to the protocol tree */
 345     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER);
 346     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 347     proto_tree_add_item(m3ua_tree, hf_v5_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER);
 348     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 349                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, v5_message_class_type_values, "reserved"), message_type);
 350     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
 351   }
 352 }
 353
 354 static void
 355 dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 356 {
 357   guint8  message_class, message_type;
 358
 359   /* Extract the common header */
 360   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 361   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 362
 363   if (check_col(pinfo->cinfo, COL_INFO))
 364     col_add_fstr(pinfo->cinfo, COL_INFO,"%s ", val_to_str(message_class * 256 + message_type, message_class_type_acro_values, "reserved"));
 365
 366   if (m3ua_tree) {
 367     /* add the components of the common header to the protocol tree */
 368     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, NETWORK_BYTE_ORDER);
 369     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 370     proto_tree_add_item(m3ua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, NETWORK_BYTE_ORDER);
 371     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 372                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, message_class_type_values, "reserved"), message_type);
 373     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
 374   }
 375 }
 376
 377 #define NETWORK_APPEARANCE_LENGTH 4
 378 #define NETWORK_APPEARANCE_OFFSET PARAMETER_VALUE_OFFSET
 379
 380 static void
 381 dissect_network_appearance_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 382 {
 383   proto_tree_add_item(parameter_tree, hf_network_appearance, parameter_tvb, NETWORK_APPEARANCE_OFFSET, NETWORK_APPEARANCE_LENGTH, NETWORK_BYTE_ORDER);
 384   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, NETWORK_APPEARANCE_OFFSET));
 385 }
 386
 387 #define V5_PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
 388
 389 static void
 390 dissect_v5_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 391 {
 392   guint16 length, protocol_data_length;
 393   tvbuff_t *payload_tvb;
 394
 395   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 396   protocol_data_length = length - PARAMETER_HEADER_LENGTH;
 397   payload_tvb          = tvb_new_subset(parameter_tvb, V5_PROTOCOL_DATA_OFFSET, protocol_data_length, protocol_data_length);
 398   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 399   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 400   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 401 }
 402
 403 #define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
 404
 405 static void
 406 dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 407 {
 408   guint16 info_string_length;
 409
 410   info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 411   proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, NETWORK_BYTE_ORDER);
 412   proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
 413                          (const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
 414 }
 415
 416 #define AFFECTED_MASK_LENGTH 1
 417 #define AFFECTED_DPC_LENGTH  3
 418 #define AFFECTED_DESTINATION_LENGTH (AFFECTED_MASK_LENGTH + AFFECTED_DPC_LENGTH)
 419
 420 #define AFFECTED_MASK_OFFSET 0
 421 #define AFFECTED_DPC_OFFSET  1
 422
 423 static void
 424 dissect_affected_destinations_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 425 {
 426   guint16 number_of_destinations, destination_number;
 427   gint destination_offset;
 428   proto_item *item;
 429
 430   number_of_destinations = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 431   destination_offset = PARAMETER_VALUE_OFFSET;
 432   for(destination_number=1; destination_number <= number_of_destinations; destination_number++) {
 433     proto_tree_add_item(parameter_tree, hf_affected_point_code_mask, parameter_tvb, destination_offset + AFFECTED_MASK_OFFSET, AFFECTED_MASK_LENGTH, NETWORK_BYTE_ORDER);
 434     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);
 435     if (mtp3_pc_structured())
 436       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET)));
 437     destination_offset += AFFECTED_DESTINATION_LENGTH;
 438   }
 439   proto_item_append_text(parameter_item, " (%u destination%s)", number_of_destinations, plurality(number_of_destinations, "", "s"));
 440 }
 441
 442 #define ROUTING_CONTEXT_LENGTH 4
 443
 444 static void
 445 dissect_routing_context_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 446 {
 447   guint16 number_of_contexts, context_number;
 448   gint context_offset;
 449
 450   number_of_contexts = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 451   context_offset = PARAMETER_VALUE_OFFSET;
 452   for(context_number=1; context_number <= number_of_contexts; context_number++) {
 453     proto_tree_add_item(parameter_tree, hf_routing_context, parameter_tvb, context_offset, ROUTING_CONTEXT_LENGTH, NETWORK_BYTE_ORDER);
 454     context_offset += ROUTING_CONTEXT_LENGTH;
 455   };
 456   proto_item_append_text(parameter_item, " (%u context%s)", number_of_contexts, plurality(number_of_contexts, "", "s"));
 457 }
 458
 459 #define DIAGNOSTIC_INFO_OFFSET PARAMETER_VALUE_OFFSET
 460
 461 static void
 462 dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 463 {
 464   guint16 diag_info_length;
 465
 466   diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 467   proto_tree_add_item(parameter_tree, hf_diagnostic_information, parameter_tvb, DIAGNOSTIC_INFO_OFFSET, diag_info_length, NETWORK_BYTE_ORDER);
 468   proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
 469 }
 470
 471 #define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
 472
 473 static void
 474 dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 475 {
 476   guint16 heartbeat_data_length;
 477
 478   heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 479   proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, NETWORK_BYTE_ORDER);
 480   proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
 481 }
 482
 483 #define UNKNOWN_UNAVAIL_CAUSE                  0
 484 #define UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE   1
 485 #define INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE 2
 486
 487 static const value_string unavailability_cause_values[] = {
 488   { UNKNOWN_UNAVAIL_CAUSE,                  "Unknown"                  },
 489   { UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE,   "Unequipped remote user"   },
 490   { INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE, "Inaccessible remote user" },
 491   {0,                                       NULL } };
 492
 493 #define RESERVED_0_USER_ID                0
 494 #define RESERVED_1_USER_ID                1
 495 #define RESERVED_2_USER_ID                2
 496 #define SCCP_USER_ID                      3
 497 #define TUP_USER_ID                       4
 498 #define ISUP_USER_ID                      5
 499 #define RESERVED_6_USER_ID                6
 500 #define RESERVED_7_USER_ID                7
 501 #define RESERVED_8_USER_ID                8
 502 #define BROADBAND_ISUP_USER_ID            9
 503 #define SATELLITE_ISUP_USER_ID           10
 504 #define RESERVED_11_USER_ID              11
 505 #define AAL_2_SIGNALING_USER_ID          12
 506 #define BICC_USER_ID                     13
 507 #define GATEWAY_CONTROL_PROTOCOL_USER_ID 14
 508 #define RESERVED_15_USER_ID              15
 509
 510 static const value_string user_identity_values[] = {
 511   { RESERVED_0_USER_ID,     "Reserved"       },
 512   { RESERVED_1_USER_ID,     "Reserved"       },
 513   { RESERVED_2_USER_ID,     "Reserved"       },
 514   { SCCP_USER_ID,           "SCCP"           },
 515   { TUP_USER_ID,            "TUP"            },
 516   { ISUP_USER_ID,           "ISUP"           },
 517   { RESERVED_6_USER_ID,     "Reserved"       },
 518   { RESERVED_7_USER_ID,     "Reserved"       },
 519   { RESERVED_8_USER_ID,     "Reserved"       },
 520   { BROADBAND_ISUP_USER_ID, "Broadband ISUP" },
 521   { SATELLITE_ISUP_USER_ID, "Satellite ISUP" },
 522   { RESERVED_11_USER_ID,    "Reserved"       },
 523   { AAL_2_SIGNALING_USER_ID,"AAL type2 Signaling"},
 524   { BICC_USER_ID,           "Bearer Independent Call Control (BICC)"},
 525   { GATEWAY_CONTROL_PROTOCOL_USER_ID, "Gateway Control Protocol"},
 526   { RESERVED_15_USER_ID,    "Reserved"       },
 527
 528   {0,                       NULL             } };
 529
 530 #define CAUSE_LENGTH 2
 531 #define USER_LENGTH  2
 532
 533 #define CAUSE_OFFSET  PARAMETER_VALUE_OFFSET
 534 #define USER_OFFSET   (CAUSE_OFFSET + CAUSE_LENGTH)
 535
 536 static void
 537 dissect_user_cause_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 538 {
 539   proto_tree_add_item(parameter_tree, hf_cause, parameter_tvb, CAUSE_OFFSET, CAUSE_LENGTH, NETWORK_BYTE_ORDER);
 540   proto_tree_add_item(parameter_tree, hf_user,  parameter_tvb, USER_OFFSET,  USER_LENGTH,  NETWORK_BYTE_ORDER);
 541   proto_item_append_text(parameter_item, " (%s: %s)",
 542                          val_to_str(tvb_get_ntohs(parameter_tvb, USER_OFFSET),  user_identity_values,        "Unknown user"),
 543                          val_to_str(tvb_get_ntohs(parameter_tvb, CAUSE_OFFSET), unavailability_cause_values, "unknown cause"));
 544 }
 545
 546 #define UNSPECIFIED_REASON          0
 547 #define USER_UNAVAILABLE_REASON     1
 548 #define MANAGEMENT_BLOCKING_REASON  2
 549
 550 static const value_string reason_values[] = {
 551   { UNSPECIFIED_REASON,         "Unspecified" },
 552   { USER_UNAVAILABLE_REASON,    "User unavailable" },
 553   { MANAGEMENT_BLOCKING_REASON, "Management blocking" },
 554   {0,                           NULL } };
 555
 556 #define REASON_LENGTH 4
 557 #define REASON_OFFSET PARAMETER_VALUE_OFFSET
 558
 559 static void
 560 dissect_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 561 {
 562   proto_tree_add_item(parameter_tree, hf_reason, parameter_tvb, REASON_OFFSET, REASON_LENGTH, NETWORK_BYTE_ORDER);
 563   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REASON_OFFSET), reason_values, "unknown"));
 564 }
 565
 566 #define TRAFFIC_MODE_TYPE_LENGTH 4
 567 #define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 568
 569 static const value_string v5_traffic_mode_type_values[] = {
 570   { 1, "Over-ride"            },
 571   { 2, "Load-share"           },
 572   { 3, "Over-ride (standby)"  },
 573   { 4, "Load-share (standby)" },
 574   { 0, NULL                   } };
 575
 576 static void
 577 dissect_v5_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 578 {
 579   proto_tree_add_item(parameter_tree, hf_v5_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 580   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"));
 581 }
 582
 583 static const value_string v6_traffic_mode_type_values[] = {
 584   { 1, "Over-ride"            },
 585   { 2, "Load-share"           },
 586   { 3, "Over-ride (standby)"  },
 587   { 4, "Load-share (standby)" },
 588   { 0, NULL                   } };
 589
 590 static void
 591 dissect_v6_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 592 {
 593   proto_tree_add_item(parameter_tree, hf_v6_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 594   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"));
 595 }
 596
 597 static const value_string v7_traffic_mode_type_values[] = {
 598   { 1, "Over-ride"            },
 599   { 2, "Load-share"           },
 600   { 0, NULL                   } };
 601
 602 static void
 603 dissect_v7_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 604 {
 605   proto_tree_add_item(parameter_tree, hf_v7_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 606   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"));
 607 }
 608
 609 static const value_string traffic_mode_type_values[] = {
 610   { 1, "Over-ride"  },
 611   { 2, "Load-share" },
 612   { 3, "Broadcast"  },
 613   { 0, NULL         } };
 614
 615 static void
 616 dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 617 {
 618   proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 619   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown"));
 620 }
 621
 622 #define ERROR_CODE_LENGTH 4
 623 #define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
 624
 625 static const value_string v5_error_code_values[] = {
 626   {  1, "Invalid version"               },
 627   {  2, "Invalid network appearance"    },
 628   {  3, "Unsupported message class"     },
 629   {  4, "Unsupported message type"      },
 630   {  5, "Invalid traffic handling mode" },
 631   {  6, "Unexpected message"            },
 632   {  7, "Protocol error"                },
 633   {  8, "Invalid routing context"       },
 634   {  0,  NULL                           } };
 635
 636 static void
 637 dissect_v5_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 638 {
 639   proto_tree_add_item(parameter_tree, hf_v5_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 640   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v5_error_code_values, "unknown"));
 641 }
 642
 643 static const value_string v6_error_code_values[] = {
 644   {  1, "Invalid version"               },
 645   {  2, "Invalid network appearance"    },
 646   {  3, "Unsupported message class"     },
 647   {  4, "Unsupported message type"      },
 648   {  5, "Invalid traffic handling mode" },
 649   {  6, "Unexpected message"            },
 650   {  7, "Protocol error"                },
 651   {  8, "Invalid routing context"       },
 652   {  9, "Invalid stream identifier"     },
 653   { 10, "Invalid parameter value"       },
 654   {  0,  NULL                           } };
 655
 656
 657 static void
 658 dissect_v6_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 659 {
 660   proto_tree_add_item(parameter_tree, hf_v6_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 661   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v6_error_code_values, "unknown"));
 662 }
 663
 664 static const value_string v7_error_code_values[] = {
 665   {  1, "Invalid version"               },
 666   {  2, "Invalid network appearance"    },
 667   {  3, "Unsupported message class"     },
 668   {  4, "Unsupported message type"      },
 669   {  5, "Invalid traffic handling mode" },
 670   {  6, "Unexpected message"            },
 671   {  7, "Protocol error"                },
 672   {  8, "Invalid routing context"       },
 673   {  9, "Invalid stream identifier"     },
 674   { 10, "Invalid parameter value"       },
 675   { 11, "Refused - Management Blocking" },
 676   { 12, "Unknown Routing Context"       },
 677   {  0,  NULL                           } };
 678
 679
 680 static void
 681 dissect_v7_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 682 {
 683   proto_tree_add_item(parameter_tree, hf_v7_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 684   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v7_error_code_values, "unknown"));
 685 }
 686
 687 static const value_string error_code_values[] = {
 688   { 0x01, "Invalid version"                   },
 689   { 0x03, "Unsupported message class"         },
 690   { 0x04, "Unsupported message type"          },
 691   { 0x05, "Unsupported traffic handling mode" },
 692   { 0x06, "Unexpected message"                },
 693   { 0x07, "Protocol error"                    },
 694   { 0x09, "Invalid stream identifier"         },
 695   { 0x0d, "Refused - management blocking"     },
 696   { 0x0e, "ASP identifier required"           },
 697   { 0x0f, "Invalid ASP identifier"            },
 698   { 0x11, "Invalid parameter value"           },
 699   { 0x12, "Parameter field error"             },
 700   { 0x13, "Unexpected parameter"              },
 701   { 0x14, "Destination status unknown"        },
 702   { 0x15, "Invalid network appearance"        },
 703   { 0x16, "Missing parameter"                 },
 704   { 0x19, "Invalid routing context"           },
 705   { 0x1a, "No configured AS for ASP"          },
 706   { 0,    NULL                                } };
 707
 708 static void
 709 dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 710 {
 711   proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, NETWORK_BYTE_ORDER);
 712   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), error_code_values, "unknown"));
 713 }
 714
 715 #define AS_STATE_CHANGE_TYPE       1
 716 #define OTHER_TYPE                 2
 717
 718 static const value_string status_type_values[] = {
 719   { AS_STATE_CHANGE_TYPE,            "Application server state change" },
 720   { OTHER_TYPE,                      "Other" },
 721   { 0,                           NULL } };
 722
 723 #define RESERVED_INFO              1
 724 #define AS_INACTIVE_INFO           2
 725 #define AS_ACTIVE_INFO             3
 726 #define AS_PENDING_INFO            4
 727
 728 #define INSUFFICIENT_ASP_RES_INFO  1
 729 #define ALTERNATE_ASP_ACTIVE_INFO  2
 730 #define ASP_FAILURE_INFO           3
 731
 732 static const value_string v567_status_type_info_values[] = {
 733   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 734   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 735   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 736   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 737   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 738   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 739   {0,                           NULL } };
 740
 741
 742 #define STATUS_TYPE_LENGTH 2
 743 #define STATUS_INFO_LENGTH 2
 744
 745 #define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 746 #define STATUS_INFO_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
 747
 748 static void
 749 dissect_v567_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 750 {
 751   guint16 status_type, status_info;
 752
 753   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 754   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 755
 756   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 757   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 758                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown"), status_info);
 759
 760   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown status information"));
 761 }
 762
 763 static const value_string status_type_info_values[] = {
 764   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 765   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 766   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 767   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 768   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 769   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 770   { OTHER_TYPE           * 256 * 256 + ASP_FAILURE_INFO,          "ASP Failure" },
 771   {0,                           NULL } };
 772
 773 static void
 774 dissect_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 775 {
 776   guint16 status_type, status_info;
 777
 778   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 779   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 780
 781   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
 782   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 783                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown"), status_info);
 784
 785   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown status information"));
 786 }
 787
 788 static const value_string congestion_level_values[] = {
 789   { 0, "No congestion or undefined" },
 790   { 1, "Congestion level 1"         },
 791   { 2, "Congestion level 2"         },
 792   { 3, "Congestion level 3"         },
 793   { 0, NULL                         } };
 794
 795 #define CONG_IND_RESERVED_LENGTH    3
 796 #define CONG_IND_LEVEL_LENGTH       1
 797
 798 #define CONG_IND_RESERVED_OFFSET     PARAMETER_VALUE_OFFSET
 799 #define CONG_IND_LEVEL_OFFSET        (CONG_IND_RESERVED_OFFSET + CONG_IND_RESERVED_LENGTH)
 800
 801 static void
 802 dissect_congestion_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 803 {
 804   proto_tree_add_item(parameter_tree, hf_congestion_reserved, parameter_tvb, CONG_IND_RESERVED_OFFSET, CONG_IND_RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 805   proto_tree_add_item(parameter_tree, hf_congestion_level,    parameter_tvb, CONG_IND_LEVEL_OFFSET,    CONG_IND_LEVEL_LENGTH,    NETWORK_BYTE_ORDER);
 806   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_guint8(parameter_tvb, CONG_IND_LEVEL_OFFSET), congestion_level_values, "unknown"));
 807 }
 808
 809 #define ASP_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 810 #define ASP_IDENTIFIER_LENGTH  4
 811
 812 static void
 813 dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 814 {
 815   proto_tree_add_item(parameter_tree, hf_asp_identifier, parameter_tvb, ASP_IDENTIFIER_OFFSET, ASP_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 816   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_IDENTIFIER_OFFSET));
 817 }
 818
 819 #define PROTOCOL_DATA_1_OFFSET PARAMETER_VALUE_OFFSET
 820
 821 static void
 822 dissect_protocol_data_1_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 823 {
 824   guint16 protocol_data_length;
 825   tvbuff_t *payload_tvb;
 826
 827   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 828   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_1_OFFSET, protocol_data_length, protocol_data_length);
 829   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 830   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 831   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 832 }
 833
 834 #define LI_OCTETT_LENGTH 1
 835 #define LI_OCTETT_OFFSET PARAMETER_VALUE_OFFSET
 836 #define PROTOCOL_DATA_2_OFFSET (PARAMETER_VALUE_OFFSET + LI_OCTETT_LENGTH)
 837
 838 static void
 839 dissect_protocol_data_2_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
 840 {
 841   guint8 li;
 842   guint16 protocol_data_length;
 843   tvbuff_t *payload_tvb;
 844
 845   li                   = tvb_get_guint8(parameter_tvb, LI_OCTETT_OFFSET);
 846   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - LI_OCTETT_LENGTH;
 847   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_2_OFFSET, protocol_data_length, protocol_data_length);
 848   proto_tree_add_item(parameter_tree, hf_li, parameter_tvb, LI_OCTETT_OFFSET, LI_OCTETT_LENGTH, NETWORK_BYTE_ORDER);
 849   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 850   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + LI_OCTETT_LENGTH);
 851   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 852 }
 853
 854
 855
 856 #define CON_DEST_RESERVED_LENGTH    1
 857 #define CON_DEST_PC_LENGTH          3
 858
 859 #define CON_DEST_RESERVED_OFFSET    PARAMETER_VALUE_OFFSET
 860 #define CON_DEST_PC_OFFSET          (CON_DEST_RESERVED_OFFSET + CON_DEST_RESERVED_LENGTH)
 861
 862 static void
 863 dissect_concerned_destination_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 864 {
 865   proto_item *item;
 866
 867   proto_tree_add_item(parameter_tree, hf_concerned_dest_reserved, parameter_tvb, CON_DEST_RESERVED_OFFSET, CON_DEST_RESERVED_LENGTH, NETWORK_BYTE_ORDER);
 868   item = proto_tree_add_item(parameter_tree, hf_concerned_dest_pc,       parameter_tvb, CON_DEST_PC_OFFSET,       CON_DEST_PC_LENGTH,       NETWORK_BYTE_ORDER);
 869   if (mtp3_pc_structured())
 870     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 871   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 872 }
 873
 874 static void
 875 dissect_routing_key_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 876 {
 877   tvbuff_t *parameters_tvb;
 878   guint16 length, parameters_length;
 879
 880   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 881   parameters_length = length - PARAMETER_HEADER_LENGTH;
 882   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 883   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 884 }
 885
 886 static const value_string registration_result_status_values[] = {
 887   { 0, "Successfully Registered" } ,
 888   { 1, "Error - Unknown" } ,
 889   { 2, "Error - Invalid DPC" } ,
 890   { 3, "Error - Invalid Network Appearance" } ,
 891   { 4, "Error - Invalid Routing Key" } ,
 892   { 5, "Error - Permission Denied" } ,
 893   { 6, "Error - Overlapping (Non-unique) Routing Key" } ,
 894   { 7, "Error - Routing Key not Provisioned" } ,
 895   { 8, "Error - Insufficient Resources" } ,
 896   { 0, NULL } };
 897
 898 #define REG_RES_IDENTIFIER_LENGTH 4
 899 #define REG_RES_STATUS_LENGTH     4
 900 #define REG_RES_CONTEXT_LENGTH    4
 901
 902 #define REG_RES_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 903 #define REG_RES_STATUS_OFFSET     (REG_RES_IDENTIFIER_OFFSET + REG_RES_IDENTIFIER_LENGTH)
 904 #define REG_RES_CONTEXT_OFFSET    (REG_RES_STATUS_OFFSET + REG_RES_STATUS_LENGTH)
 905
 906 static void
 907 dissect_v67_registration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 908 {
 909   proto_tree_add_item(parameter_tree, hf_registration_result_identifier, parameter_tvb, REG_RES_IDENTIFIER_OFFSET, REG_RES_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 910   proto_tree_add_item(parameter_tree, hf_registration_result_status,     parameter_tvb, REG_RES_STATUS_OFFSET,     REG_RES_STATUS_LENGTH,     NETWORK_BYTE_ORDER);
 911   proto_tree_add_item(parameter_tree, hf_registration_result_context,    parameter_tvb, REG_RES_CONTEXT_OFFSET,    REG_RES_CONTEXT_LENGTH,    NETWORK_BYTE_ORDER);
 912 }
 913
 914 static void
 915 dissect_registration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 916 {
 917   tvbuff_t *parameters_tvb;
 918   guint16 length, parameters_length;
 919
 920   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 921   parameters_length = length - PARAMETER_HEADER_LENGTH;
 922   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 923   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 924 }
 925
 926 static const value_string v6_deregistration_result_status_values[] = {
 927   { 0, "Successfully De-registered" } ,
 928   { 1, "Error - Unknown" } ,
 929   { 2, "Error - Invalid Routing context" } ,
 930   { 3, "Error - Permission Denied" } ,
 931   { 4, "Error - Not registered" } ,
 932   { 0, NULL } };
 933
 934 #define DEREG_RES_CONTEXT_LENGTH 4
 935 #define DEREG_RES_STATUS_LENGTH  4
 936
 937 #define DEREG_RES_CONTEXT_OFFSET PARAMETER_VALUE_OFFSET
 938 #define DEREG_RES_STATUS_OFFSET  (DEREG_RES_CONTEXT_OFFSET + DEREG_RES_CONTEXT_LENGTH)
 939
 940 static void
 941 dissect_v67_deregistration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 942 {
 943   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_context, parameter_tvb, DEREG_RES_CONTEXT_OFFSET, DEREG_RES_CONTEXT_LENGTH, NETWORK_BYTE_ORDER);
 944   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_status,  parameter_tvb, DEREG_RES_STATUS_OFFSET,  DEREG_RES_STATUS_LENGTH,  NETWORK_BYTE_ORDER);
 945 }
 946
 947 static void
 948 dissect_deregistration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 949 {
 950   tvbuff_t *parameters_tvb;
 951   guint16 length, parameters_length;
 952
 953   length            = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 954   parameters_length = length - PARAMETER_HEADER_LENGTH;
 955   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 956   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 957 }
 958
 959
 960 #define LOCAL_RK_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 961 #define LOCAL_RK_IDENTIFIER_LENGTH 4
 962
 963 static void
 964 dissect_local_routing_key_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 965 {
 966   guint32 id;
 967
 968   id = tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET);
 969   proto_tree_add_item(parameter_tree, hf_local_rk_identifier, parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET, LOCAL_RK_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
 970   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET));
 971 }
 972
 973 #define DPC_MASK_LENGTH    1
 974 #define DPC_PC_LENGTH      3
 975
 976 #define DPC_MASK_OFFSET    PARAMETER_VALUE_OFFSET
 977 #define DPC_PC_OFFSET      (DPC_MASK_OFFSET + DPC_MASK_LENGTH)
 978
 979 static void
 980 dissect_destination_point_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 981 {
 982   proto_item *item;
 983
 984   proto_tree_add_item(parameter_tree, hf_dpc_mask, parameter_tvb, DPC_MASK_OFFSET, DPC_MASK_LENGTH, NETWORK_BYTE_ORDER);
 985   item = proto_tree_add_item(parameter_tree, hf_dpc_pc,   parameter_tvb, DPC_PC_OFFSET,   DPC_PC_LENGTH,   NETWORK_BYTE_ORDER);
 986   if (mtp3_pc_structured())
 987     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 988   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 989 }
 990
 991 #define SI_LENGTH 1
 992
 993 static void
 994 dissect_service_indicators_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 995 {
 996   guint16 length, number_of_sis, si_number;
 997   gint si_offset;
 998
 999   length        = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1000   number_of_sis = length - PARAMETER_HEADER_LENGTH;
1001
1002   si_offset = PARAMETER_VALUE_OFFSET;
1003   for(si_number=1; si_number <= number_of_sis; si_number++) {
1004     proto_tree_add_item(parameter_tree, hf_si, parameter_tvb, si_offset, SI_LENGTH, NETWORK_BYTE_ORDER);
1005     si_offset += SI_LENGTH;
1006   };
1007   proto_item_append_text(parameter_item, " (%u indicator%s)", number_of_sis, plurality(number_of_sis, "", "s"));
1008
1009 }
1010 #define SSN_LENGTH 1
1011
1012 static void
1013 dissect_subsystem_numbers_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1014 {
1015   guint16 length, number_of_ssns, ssn_number;
1016   gint ssn_offset;
1017
1018   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1019   number_of_ssns = length - PARAMETER_HEADER_LENGTH;
1020
1021   ssn_offset = PARAMETER_VALUE_OFFSET;
1022   for(ssn_number=1; ssn_number <= number_of_ssns; ssn_number++) {
1023     proto_tree_add_item(parameter_tree, hf_ssn, parameter_tvb, ssn_offset, SSN_LENGTH, NETWORK_BYTE_ORDER);
1024     ssn_offset += SSN_LENGTH;
1025   };
1026   proto_item_append_text(parameter_item, " (%u number%s)", number_of_ssns, plurality(number_of_ssns, "", "s"));
1027
1028 }
1029
1030 #define OPC_MASK_LENGTH             1
1031 #define OPC_PC_LENGTH               3
1032 #define OPC_LENGTH                  (OPC_MASK_LENGTH + OPC_PC_LENGTH)
1033 #define OPC_MASK_OFFSET             0
1034 #define OPC_PC_OFFSET               (OPC_MASK_OFFSET + OPC_MASK_LENGTH)
1035
1036 static void
1037 dissect_originating_point_code_list_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1038 {
1039   guint16 length, number_of_point_codes, point_code_number;
1040   gint point_code_offset;
1041   proto_item *item;
1042
1043   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1044   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / 4;
1045
1046   point_code_offset = PARAMETER_VALUE_OFFSET;
1047   for(point_code_number=1; point_code_number <= number_of_point_codes; point_code_number++) {
1048     proto_tree_add_item(parameter_tree, hf_opc_list_mask, parameter_tvb, point_code_offset + OPC_MASK_OFFSET, OPC_MASK_LENGTH, NETWORK_BYTE_ORDER);
1049     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);
1050     if (mtp3_pc_structured())
1051       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, point_code_offset + OPC_PC_OFFSET)));
1052     point_code_offset += OPC_LENGTH;
1053   };
1054   proto_item_append_text(parameter_item, " (%u point code%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1055 }
1056
1057 #define CIC_RANGE_MASK_LENGTH             1
1058 #define CIC_RANGE_PC_LENGTH               3
1059 #define CIC_RANGE_LOWER_LENGTH            2
1060 #define CIC_RANGE_UPPER_LENGTH            2
1061 #define CIC_RANGE_LENGTH                  (CIC_RANGE_MASK_LENGTH + CIC_RANGE_PC_LENGTH + CIC_RANGE_LOWER_LENGTH + CIC_RANGE_UPPER_LENGTH)
1062 #define CIC_RANGE_MASK_OFFSET             0
1063 #define CIC_RANGE_PC_OFFSET               (CIC_RANGE_MASK_OFFSET + CIC_RANGE_MASK_LENGTH)
1064 #define CIC_RANGE_LOWER_OFFSET            (CIC_RANGE_PC_OFFSET + CIC_RANGE_PC_LENGTH)
1065 #define CIC_RANGE_UPPER_OFFSET            (CIC_RANGE_LOWER_OFFSET + CIC_RANGE_LOWER_LENGTH)
1066
1067 static void
1068 dissect_circuit_range_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1069 {
1070   guint16 length, number_of_point_codes, point_code_number;
1071   gint point_code_offset;
1072   proto_item *pc_item;
1073
1074   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1075   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / CIC_RANGE_LENGTH;
1076
1077   point_code_offset = PARAMETER_VALUE_OFFSET;
1078   for(point_code_number = 1; point_code_number <= number_of_point_codes; point_code_number++) {
1079     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);
1080     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);
1081     if (mtp3_pc_structured())
1082       proto_item_append_text(pc_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, point_code_offset + CIC_RANGE_PC_OFFSET)));
1083     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);
1084     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);
1085     point_code_offset += CIC_RANGE_LENGTH;
1086   };
1087   proto_item_append_text(parameter_item, " (%u range%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1088 }
1089
1090 #define DATA_OPC_LENGTH   4
1091 #define DATA_DPC_LENGTH   4
1092 #define DATA_SI_LENGTH    1
1093 #define DATA_NI_LENGTH    1
1094 #define DATA_MP_LENGTH    1
1095 #define DATA_SLS_LENGTH   1
1096 #define DATA_HDR_LENGTH   (DATA_OPC_LENGTH + DATA_DPC_LENGTH + DATA_SI_LENGTH + DATA_NI_LENGTH + DATA_MP_LENGTH + DATA_SLS_LENGTH)
1097
1098 #define DATA_OPC_OFFSET   PARAMETER_VALUE_OFFSET
1099 #define DATA_DPC_OFFSET   (DATA_OPC_OFFSET + DATA_OPC_LENGTH)
1100 #define DATA_SI_OFFSET    (DATA_DPC_OFFSET + DATA_DPC_LENGTH)
1101 #define DATA_NI_OFFSET    (DATA_SI_OFFSET  + DATA_SI_LENGTH)
1102 #define DATA_MP_OFFSET    (DATA_NI_OFFSET  + DATA_NI_LENGTH)
1103 #define DATA_SLS_OFFSET   (DATA_MP_OFFSET  + DATA_MP_LENGTH)
1104 #define DATA_ULP_OFFSET   (DATA_SLS_OFFSET + DATA_SLS_LENGTH)
1105
1106 static void
1107 dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
1108 {
1109   guint16 ulp_length;
1110   tvbuff_t *payload_tvb;
1111   proto_item *item;
1112   mtp3_tap_rec_t* mtp3_tap = ep_alloc0(sizeof(mtp3_tap_rec_t));
1113
1114
1115   mtp3_tap->addr_dpc.type = mtp3_standard;
1116   mtp3_tap->addr_dpc.pc = tvb_get_ntohl(parameter_tvb,DATA_DPC_OFFSET);
1117   mtp3_tap->addr_dpc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1118   SET_ADDRESS(&pinfo->dst, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) &mtp3_tap->addr_dpc);
1119
1120
1121   mtp3_tap->addr_opc.type = mtp3_standard;
1122   mtp3_tap->addr_opc.pc = tvb_get_ntohl(parameter_tvb,DATA_OPC_OFFSET);
1123   mtp3_tap->addr_opc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1124   SET_ADDRESS(&pinfo->src, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) &mtp3_tap->addr_opc);
1125
1126   mtp3_tap->si_code = tvb_get_guint8(parameter_tvb, DATA_SI_OFFSET);
1127   mtp3_tap->size = 0;
1128
1129   tap_queue_packet(m3ua_tap, pinfo, mtp3_tap);
1130
1131   ulp_length  = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - DATA_HDR_LENGTH;
1132
1133   if (parameter_tree) {
1134     item = proto_tree_add_item(parameter_tree, hf_protocol_data_opc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1135     if (mtp3_pc_structured())
1136       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_OPC_OFFSET)));
1137     item = proto_tree_add_item(parameter_tree, hf_protocol_data_dpc, parameter_tvb, DATA_DPC_OFFSET, DATA_DPC_LENGTH, NETWORK_BYTE_ORDER);
1138     if (mtp3_pc_structured())
1139       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_DPC_OFFSET)));
1140
1141     proto_tree_add_item(parameter_tree, hf_protocol_data_si,  parameter_tvb, DATA_SI_OFFSET,  DATA_SI_LENGTH,  NETWORK_BYTE_ORDER);
1142     proto_tree_add_item(parameter_tree, hf_protocol_data_ni,  parameter_tvb, DATA_NI_OFFSET,  DATA_NI_LENGTH,  NETWORK_BYTE_ORDER);
1143     proto_tree_add_item(parameter_tree, hf_protocol_data_mp,  parameter_tvb, DATA_MP_OFFSET,  DATA_MP_LENGTH,  NETWORK_BYTE_ORDER);
1144     proto_tree_add_item(parameter_tree, hf_protocol_data_sls, parameter_tvb, DATA_SLS_OFFSET, DATA_SLS_LENGTH, NETWORK_BYTE_ORDER);
1145
1146     proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", ulp_length, plurality(ulp_length, "", "s"));
1147     proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + DATA_HDR_LENGTH);
1148
1149     item = proto_tree_add_text(parameter_tree,parameter_tvb,0,0,"MTP3 equivalents");
1150     parameter_tree = proto_item_add_subtree(item,ett_mtp3_equiv);
1151
1152     proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_opc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1153     proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_dpc, parameter_tvb, DATA_DPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1154     proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_pc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1155     proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_pc, parameter_tvb, DATA_DPC_OFFSET, DATA_OPC_LENGTH, NETWORK_BYTE_ORDER);
1156     proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_ni,  parameter_tvb, DATA_NI_OFFSET,  DATA_NI_LENGTH,  NETWORK_BYTE_ORDER);
1157
1158   }
1159
1160   payload_tvb = tvb_new_subset(parameter_tvb, DATA_ULP_OFFSET, ulp_length, ulp_length);
1161   if (!dissector_try_port(si_dissector_table, tvb_get_guint8(parameter_tvb, DATA_SI_OFFSET), payload_tvb, pinfo, tree))
1162     call_dissector(data_handle, payload_tvb, pinfo, tree);
1163 }
1164
1165 #define CORR_ID_OFFSET PARAMETER_VALUE_OFFSET
1166 #define CORR_ID_LENGTH 4
1167
1168 static void
1169 dissect_correlation_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1170 {
1171   proto_tree_add_item(parameter_tree, hf_correlation_identifier, parameter_tvb, CORR_ID_OFFSET, CORR_ID_LENGTH, NETWORK_BYTE_ORDER);
1172   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CORR_ID_OFFSET));
1173 }
1174
1175 #define REG_STATUS_LENGTH  4
1176 #define REG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1177
1178 static const value_string registration_status_values[] = {
1179   {  0, "Successfully Registered" },
1180   {  1, "Error - Unknown" },
1181   {  2, "Error - Invalid DPC" },
1182   {  3, "Error - Invalid Network Appearance" },
1183   {  4, "Error - Invalid Routing Key" },
1184   {  5, "Error - Permission Denied" },
1185   {  6, "Error - Cannot Support Unique Routing" },
1186   {  7, "Error - Routing Key not Currently Provisioned" },
1187   {  8, "Error - Insufficient Resources" },
1188   {  9, "Error - Unsupported RK parameter Field" },
1189   { 10, "Error - Unsupported/Invalid Traffic Handling Mode" },
1190   { 11, "Error - Routing Key Change Refused" },
1191   { 12, "Error - Routing Key Already Registered" },
1192   {  0, NULL } };
1193
1194 static void
1195 dissect_registration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1196 {
1197   proto_tree_add_item(parameter_tree, hf_registration_status, parameter_tvb, REG_STATUS_OFFSET, REG_STATUS_LENGTH, NETWORK_BYTE_ORDER);
1198   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REG_STATUS_OFFSET), registration_status_values, "unknown"));
1199 }
1200
1201 #define DEREG_STATUS_LENGTH  4
1202 #define DEREG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1203
1204 static const value_string deregistration_status_values[] = {
1205   { 0, "Successfully Deregistered" },
1206   { 1, "Error - Unknown" },
1207   { 2, "Error - Invalid Routing Context" },
1208   { 3, "Error - Permission Denied" },
1209   { 4, "Error - Not Registered" },
1210   { 5, "Error - ASP Currently Active for Routing Context" },
1211   { 0, NULL } };
1212
1213 static void
1214 dissect_deregistration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1215 {
1216   proto_tree_add_item(parameter_tree, hf_deregistration_status, parameter_tvb, DEREG_STATUS_OFFSET, DEREG_STATUS_LENGTH, NETWORK_BYTE_ORDER);
1217   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, DEREG_STATUS_OFFSET), deregistration_status_values, "unknown"));
1218 }
1219
1220 static void
1221 dissect_registration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1222 {
1223   tvbuff_t *parameters_tvb;
1224   guint16 parameters_length;
1225
1226   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1227   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1228   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1229 }
1230
1231 static void
1232 dissect_deregistration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1233 {
1234   tvbuff_t *parameters_tvb;
1235   guint16 parameters_length;
1236
1237   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1238   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1239   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1240 }
1241
1242 static void
1243 dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1244 {
1245   guint16 tag, parameter_value_length;
1246
1247   tag                    = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1248   parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1249   proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER);
1250   proto_item_append_text(parameter_item, " (tag %u and %u byte%s value)", tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
1251 }
1252
1253 #define V5_NETWORK_APPEARANCE_PARAMETER_TAG       1
1254 #define V5_PROTOCOL_DATA_PARAMETER_TAG            3
1255 #define V5_INFO_PARAMETER_TAG                     4
1256 #define V5_AFFECTED_DESTINATIONS_PARAMETER_TAG    5
1257 #define V5_ROUTING_CONTEXT_PARAMETER_TAG          6
1258 #define V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG   7
1259 #define V5_HEARTBEAT_DATA_PARAMETER_TAG           8
1260 #define V5_USER_CAUSE_PARAMETER_TAG               9
1261 #define V5_REASON_PARAMETER_TAG                   10
1262 #define V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG        11
1263 #define V5_ERROR_CODE_PARAMETER_TAG               12
1264 #define V5_STATUS_PARAMETER_TAG                   13
1265 #define V5_CONGESTION_INDICATION_PARAMETER_TAG    14
1266
1267 static const value_string v5_parameter_tag_values[] = {
1268   { V5_NETWORK_APPEARANCE_PARAMETER_TAG,     "Network appearance" },
1269   { V5_PROTOCOL_DATA_PARAMETER_TAG,          "Protocol data" },
1270   { V5_INFO_PARAMETER_TAG,                   "Info" },
1271   { V5_AFFECTED_DESTINATIONS_PARAMETER_TAG,  "Affected destinations" },
1272   { V5_ROUTING_CONTEXT_PARAMETER_TAG,        "Routing context" },
1273   { V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
1274   { V5_HEARTBEAT_DATA_PARAMETER_TAG,         "Heartbeat data" },
1275   { V5_USER_CAUSE_PARAMETER_TAG,             "User / Cause" },
1276   { V5_REASON_PARAMETER_TAG,                 "Reason" },
1277   { V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG,      "Traffic mode type" },
1278   { V5_ERROR_CODE_PARAMETER_TAG,             "Error code" },
1279   { V5_STATUS_PARAMETER_TAG,                 "Status" },
1280   { V5_CONGESTION_INDICATION_PARAMETER_TAG,  "Congestion indication" },
1281   { 0,                                       NULL } };
1282
1283 static void
1284 dissect_v5_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1285 {
1286   guint16 tag, length, padding_length;
1287   proto_item *parameter_item;
1288   proto_tree *parameter_tree;
1289
1290   /* extract tag and length from the parameter */
1291   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1292   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1293   padding_length = tvb_length(parameter_tvb) - length;
1294
1295   if (!tree && tag != V5_PROTOCOL_DATA_PARAMETER_TAG)
1296     return;     /* Nothing to do here */
1297
1298   /* create proto_tree stuff */
1299   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"));
1300   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1301
1302   /* add tag and length to the parameter tree */
1303   proto_tree_add_item(parameter_tree, hf_v5_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1304   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1305
1306   switch(tag) {
1307   case V5_NETWORK_APPEARANCE_PARAMETER_TAG:
1308     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1309     break;
1310   case V5_PROTOCOL_DATA_PARAMETER_TAG:
1311     dissect_v5_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_item);
1312     break;
1313   case V5_INFO_PARAMETER_TAG:
1314     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1315     break;
1316   case V5_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1317     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1318     break;
1319   case V5_ROUTING_CONTEXT_PARAMETER_TAG:
1320     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1321     break;
1322   case V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1323     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1324     break;
1325   case V5_HEARTBEAT_DATA_PARAMETER_TAG:
1326     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1327     break;
1328   case V5_USER_CAUSE_PARAMETER_TAG:
1329     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1330     break;
1331   case V5_REASON_PARAMETER_TAG:
1332     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1333     break;
1334   case V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1335     dissect_v5_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1336     break;
1337   case V5_ERROR_CODE_PARAMETER_TAG:
1338     dissect_v5_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1339     break;
1340   case V5_STATUS_PARAMETER_TAG:
1341     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1342     break;
1343   case V5_CONGESTION_INDICATION_PARAMETER_TAG:
1344     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1345     break;
1346   default:
1347     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1348     break;
1349   };
1350   if (padding_length > 0)
1351     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1352 }
1353
1354 #define V6_NETWORK_APPEARANCE_PARAMETER_TAG            1
1355 #define V6_PROTOCOL_DATA_1_PARAMETER_TAG               2
1356 #define V6_PROTOCOL_DATA_2_PARAMETER_TAG               3
1357 #define V6_INFO_PARAMETER_TAG                          4
1358 #define V6_AFFECTED_DESTINATIONS_PARAMETER_TAG         5
1359 #define V6_ROUTING_CONTEXT_PARAMETER_TAG               6
1360 #define V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        7
1361 #define V6_HEARTBEAT_DATA_PARAMETER_TAG                8
1362 #define V6_USER_CAUSE_PARAMETER_TAG                    9
1363 #define V6_REASON_PARAMETER_TAG                       10
1364 #define V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG            11
1365 #define V6_ERROR_CODE_PARAMETER_TAG                   12
1366 #define V6_STATUS_PARAMETER_TAG                       13
1367 #define V6_CONGESTION_INDICATION_PARAMETER_TAG        14
1368 #define V6_CONCERNED_DESTINATION_PARAMETER_TAG        15
1369 #define V6_ROUTING_KEY_PARAMETER_TAG                  16
1370 #define V6_REGISTRATION_RESULT_PARAMETER_TAG          17
1371 #define V6_DEREGISTRATION_RESULT_PARAMETER_TAG        18
1372 #define V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 19
1373 #define V6_DESTINATION_POINT_CODE_PARAMETER_TAG       20
1374 #define V6_SERVICE_INDICATORS_PARAMETER_TAG           21
1375 #define V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG            22
1376 #define V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  23
1377 #define V6_CIRCUIT_RANGE_PARAMETER_TAG                24
1378 #define V6_REGISTRATION_RESULTS_PARAMETER_TAG         25
1379 #define V6_DEREGISTRATION_RESULTS_PARAMETER_TAG       26
1380
1381 static const value_string v6_parameter_tag_values[] = {
1382   { V6_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1383   { V6_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1384   { V6_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1385   { V6_INFO_PARAMETER_TAG,                         "Info" },
1386   { V6_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1387   { V6_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1388   { V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1389   { V6_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1390   { V6_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1391   { V6_REASON_PARAMETER_TAG,                       "Reason" },
1392   { V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1393   { V6_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1394   { V6_STATUS_PARAMETER_TAG,                       "Status" },
1395   { V6_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1396   { V6_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1397   { V6_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1398   { V6_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1399   { V6_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1400   { V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1401   { V6_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1402   { V6_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1403   { V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1404   { V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1405   { V6_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1406   { V6_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1407   { V6_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1408   { 0,                           NULL } };
1409
1410 static void
1411 dissect_v6_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1412 {
1413   guint16 tag, length, padding_length;
1414   proto_item *parameter_item;
1415   proto_tree *parameter_tree;
1416
1417   /* extract tag and length from the parameter */
1418   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1419   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1420   padding_length = tvb_length(parameter_tvb) - length;
1421
1422   if (!tree && tag != V6_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V6_PROTOCOL_DATA_2_PARAMETER_TAG)
1423     return;     /* Nothing to do here */
1424
1425   /* create proto_tree stuff */
1426   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"));
1427   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1428
1429   /* add tag and length to the parameter tree */
1430   proto_tree_add_item(parameter_tree, hf_v6_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1431   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1432
1433   switch(tag) {
1434   case V6_NETWORK_APPEARANCE_PARAMETER_TAG:
1435     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1436     break;
1437   case V6_PROTOCOL_DATA_1_PARAMETER_TAG:
1438     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1439     break;
1440   case V6_PROTOCOL_DATA_2_PARAMETER_TAG:
1441     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1442     break;
1443   case V6_INFO_PARAMETER_TAG:
1444     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1445     break;
1446   case V6_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1447     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1448     break;
1449   case V6_ROUTING_CONTEXT_PARAMETER_TAG:
1450     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1451     break;
1452   case V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1453     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1454     break;
1455   case V6_HEARTBEAT_DATA_PARAMETER_TAG:
1456     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1457     break;
1458   case V6_USER_CAUSE_PARAMETER_TAG:
1459     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1460     break;
1461   case V6_REASON_PARAMETER_TAG:
1462     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1463     break;
1464   case V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1465     dissect_v6_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1466     break;
1467   case V6_ERROR_CODE_PARAMETER_TAG:
1468     dissect_v6_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1469     break;
1470   case V6_STATUS_PARAMETER_TAG:
1471     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1472     break;
1473   case V6_CONGESTION_INDICATION_PARAMETER_TAG:
1474     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1475     break;
1476   case V6_CONCERNED_DESTINATION_PARAMETER_TAG:
1477     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1478     break;
1479   case V6_ROUTING_KEY_PARAMETER_TAG:
1480     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1481     break;
1482   case V6_REGISTRATION_RESULT_PARAMETER_TAG:
1483     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1484     break;
1485   case V6_DEREGISTRATION_RESULT_PARAMETER_TAG:
1486     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1487     break;
1488   case V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1489     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1490     break;
1491   case V6_DESTINATION_POINT_CODE_PARAMETER_TAG:
1492     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1493     break;
1494   case V6_SERVICE_INDICATORS_PARAMETER_TAG:
1495     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1496     break;
1497   case V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1498     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1499     break;
1500   case V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1501     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1502     break;
1503   case V6_CIRCUIT_RANGE_PARAMETER_TAG:
1504     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1505     break;
1506   case V6_REGISTRATION_RESULTS_PARAMETER_TAG:
1507     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1508     break;
1509   case V6_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1510     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1511     break;
1512   default:
1513     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1514     break;
1515   };
1516
1517   if (padding_length > 0)
1518     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1519 }
1520
1521 #define V7_NETWORK_APPEARANCE_PARAMETER_TAG            0x80
1522 #define V7_PROTOCOL_DATA_1_PARAMETER_TAG               0x81
1523 #define V7_PROTOCOL_DATA_2_PARAMETER_TAG               0x82
1524 #define V7_INFO_PARAMETER_TAG                          0x04
1525 #define V7_AFFECTED_DESTINATIONS_PARAMETER_TAG         0x83
1526 #define V7_ROUTING_CONTEXT_PARAMETER_TAG               0x06
1527 #define V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        0x07
1528 #define V7_HEARTBEAT_DATA_PARAMETER_TAG                0x09
1529 #define V7_USER_CAUSE_PARAMETER_TAG                    0x84
1530 #define V7_REASON_PARAMETER_TAG                        0x0a
1531 #define V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG             0x0b
1532 #define V7_ERROR_CODE_PARAMETER_TAG                    0x0c
1533 #define V7_STATUS_PARAMETER_TAG                        0x0d
1534 #define V7_CONGESTION_INDICATION_PARAMETER_TAG         0x85
1535 #define V7_CONCERNED_DESTINATION_PARAMETER_TAG         0x86
1536 #define V7_ROUTING_KEY_PARAMETER_TAG                   0x87
1537 #define V7_REGISTRATION_RESULT_PARAMETER_TAG           0x88
1538 #define V7_DEREGISTRATION_RESULT_PARAMETER_TAG         0x89
1539 #define V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG  0x8a
1540 #define V7_DESTINATION_POINT_CODE_PARAMETER_TAG        0x8b
1541 #define V7_SERVICE_INDICATORS_PARAMETER_TAG            0x8c
1542 #define V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG             0x8d
1543 #define V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG   0x8e
1544 #define V7_CIRCUIT_RANGE_PARAMETER_TAG                 0x8f
1545 #define V7_REGISTRATION_RESULTS_PARAMETER_TAG          0x90
1546 #define V7_DEREGISTRATION_RESULTS_PARAMETER_TAG        0x91
1547
1548 static const value_string v7_parameter_tag_values[] = {
1549   { V7_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1550   { V7_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1551   { V7_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1552   { V7_INFO_PARAMETER_TAG,                         "Info" },
1553   { V7_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1554   { V7_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1555   { V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1556   { V7_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1557   { V7_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1558   { V7_REASON_PARAMETER_TAG,                       "Reason" },
1559   { V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1560   { V7_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1561   { V7_STATUS_PARAMETER_TAG,                       "Status" },
1562   { V7_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1563   { V7_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1564   { V7_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1565   { V7_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1566   { V7_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1567   { V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1568   { V7_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1569   { V7_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1570   { V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1571   { V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1572   { V7_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1573   { V7_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1574   { V7_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1575   { 0,                           NULL } };
1576
1577 static void
1578 dissect_v7_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1579 {
1580   guint16 tag, length, padding_length;
1581   proto_item *parameter_item;
1582   proto_tree *parameter_tree;
1583
1584   /* extract tag and length from the parameter */
1585   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1586   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1587   padding_length = tvb_length(parameter_tvb) - length;
1588
1589   if (!tree && tag != V7_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V7_PROTOCOL_DATA_2_PARAMETER_TAG)
1590     return;     /* Nothing to do here */
1591
1592   /* create proto_tree stuff */
1593   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"));
1594   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1595
1596   /* add tag and length to the parameter tree */
1597   proto_tree_add_item(parameter_tree, hf_v7_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1598   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1599
1600   switch(tag) {
1601   case V7_NETWORK_APPEARANCE_PARAMETER_TAG:
1602     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1603     break;
1604   case V7_PROTOCOL_DATA_1_PARAMETER_TAG:
1605     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1606     break;
1607   case V7_PROTOCOL_DATA_2_PARAMETER_TAG:
1608     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1609     break;
1610   case V7_INFO_PARAMETER_TAG:
1611     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1612     break;
1613   case V7_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1614     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1615     break;
1616   case V7_ROUTING_CONTEXT_PARAMETER_TAG:
1617     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1618     break;
1619   case V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1620     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1621     break;
1622   case V7_HEARTBEAT_DATA_PARAMETER_TAG:
1623     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1624     break;
1625   case V7_USER_CAUSE_PARAMETER_TAG:
1626     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1627     break;
1628   case V7_REASON_PARAMETER_TAG:
1629     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1630     break;
1631   case V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1632     dissect_v7_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1633     break;
1634   case V7_ERROR_CODE_PARAMETER_TAG:
1635     dissect_v7_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1636     break;
1637   case V7_STATUS_PARAMETER_TAG:
1638     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1639     break;
1640   case V7_CONGESTION_INDICATION_PARAMETER_TAG:
1641     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1642     break;
1643   case V7_CONCERNED_DESTINATION_PARAMETER_TAG:
1644     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1645     break;
1646   case V7_ROUTING_KEY_PARAMETER_TAG:
1647     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1648     break;
1649   case V7_REGISTRATION_RESULT_PARAMETER_TAG:
1650     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1651     break;
1652   case V7_DEREGISTRATION_RESULT_PARAMETER_TAG:
1653     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1654     break;
1655   case V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1656     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1657     break;
1658   case V7_DESTINATION_POINT_CODE_PARAMETER_TAG:
1659     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1660     break;
1661   case V7_SERVICE_INDICATORS_PARAMETER_TAG:
1662     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1663     break;
1664   case V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1665     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1666     break;
1667   case V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1668     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1669     break;
1670   case V7_CIRCUIT_RANGE_PARAMETER_TAG:
1671     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1672     break;
1673   case V7_REGISTRATION_RESULTS_PARAMETER_TAG:
1674     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1675     break;
1676   case V7_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1677     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1678     break;
1679   default:
1680     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1681     break;
1682   };
1683
1684   if (padding_length > 0)
1685     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1686 }
1687
1688 #define INFO_STRING_PARAMETER_TAG                  0x0004
1689 #define ROUTING_CONTEXT_PARAMETER_TAG              0x0006
1690 #define DIAGNOSTIC_INFORMATION_PARAMETER_TAG       0x0007
1691 #define HEARTBEAT_DATA_PARAMETER_TAG               0x0009
1692 #define TRAFFIC_MODE_TYPE_PARAMETER_TAG            0x000b
1693 #define ERROR_CODE_PARAMETER_TAG                   0x000c
1694 #define STATUS_PARAMETER_TAG                       0x000d
1695 #define ASP_IDENTIFIER_PARAMETER_TAG               0x0011
1696 #define AFFECTED_POINT_CODE_PARAMETER_TAG          0x0012
1697 #define CORRELATION_IDENTIFIER_PARAMETER_TAG       0x0013
1698
1699 #define NETWORK_APPEARANCE_PARAMETER_TAG           0x0200
1700 #define USER_CAUSE_PARAMETER_TAG                   0x0204
1701 #define CONGESTION_INDICATIONS_PARAMETER_TAG       0x0205
1702 #define CONCERNED_DESTINATION_PARAMETER_TAG        0x0206
1703 #define ROUTING_KEY_PARAMETER_TAG                  0x0207
1704 #define REGISTRATION_RESULT_PARAMETER_TAG          0x0208
1705 #define DEREGISTRATION_RESULT_PARAMETER_TAG        0x0209
1706 #define LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 0x020a
1707 #define DESTINATION_POINT_CODE_PARAMETER_TAG       0x020b
1708 #define SERVICE_INDICATORS_PARAMETER_TAG           0x020c
1709 #define ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  0x020e
1710 #define CIRCUIT_RANGE_PARAMETER_TAG                0x020f
1711 #define PROTOCOL_DATA_PARAMETER_TAG                0x0210
1712 #define REGISTRATION_STATUS_PARAMETER_TAG          0x0212
1713 #define DEREGISTRATION_STATUS_PARAMETER_TAG        0x0213
1714
1715 static const value_string parameter_tag_values[] = {
1716   { INFO_STRING_PARAMETER_TAG,                  "Info string" } ,
1717   { ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" } ,
1718   { DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic Information" } ,
1719   { HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" } ,
1720   { TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" } ,
1721   { ERROR_CODE_PARAMETER_TAG,                   "Error code" } ,
1722   { STATUS_PARAMETER_TAG,                       "Status" } ,
1723   { ASP_IDENTIFIER_PARAMETER_TAG,               "ASP identifier" } ,
1724   { AFFECTED_POINT_CODE_PARAMETER_TAG,          "Affected point code" } ,
1725   { CORRELATION_IDENTIFIER_PARAMETER_TAG,       "Correlation identifier" } ,
1726   { NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" } ,
1727   { USER_CAUSE_PARAMETER_TAG,                   "User / cause" } ,
1728   { CONGESTION_INDICATIONS_PARAMETER_TAG,       "Congestion indications" } ,
1729   { CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" } ,
1730   { ROUTING_KEY_PARAMETER_TAG,                  "Routing key" } ,
1731   { REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" } ,
1732   { DEREGISTRATION_RESULT_PARAMETER_TAG,        "Deregistration result" } ,
1733   { LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" } ,
1734   { DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" } ,
1735   { SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" } ,
1736   { ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" } ,
1737   { CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" } ,
1738   { PROTOCOL_DATA_PARAMETER_TAG,                "Protocol data" } ,
1739   { REGISTRATION_STATUS_PARAMETER_TAG,          "Registration status" } ,
1740   { DEREGISTRATION_STATUS_PARAMETER_TAG,        "Deregistration status" } ,
1741   { 0,                           NULL } };
1742
1743 static void
1744 dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1745 {
1746   guint16 tag, length, padding_length;
1747   proto_item *parameter_item;
1748   proto_tree *parameter_tree;
1749
1750   /* extract tag and length from the parameter */
1751   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1752   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1753   padding_length = tvb_length(parameter_tvb) - length;
1754
1755
1756   if (!tree && tag != PROTOCOL_DATA_PARAMETER_TAG)
1757     return;     /* Nothing to do here */
1758
1759   /* create proto_tree stuff */
1760   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"));
1761   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1762
1763   /* add tag and length to the parameter tree */
1764   proto_tree_add_item(parameter_tree, hf_parameter_tag,    parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    NETWORK_BYTE_ORDER);
1765   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
1766
1767   switch(tag) {
1768   case INFO_STRING_PARAMETER_TAG:
1769     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1770     break;
1771   case ROUTING_CONTEXT_PARAMETER_TAG:
1772     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1773     break;
1774   case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1775     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1776     break;
1777   case HEARTBEAT_DATA_PARAMETER_TAG:
1778     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1779     break;
1780   case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1781     dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1782     break;
1783   case ERROR_CODE_PARAMETER_TAG:
1784     dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1785     break;
1786   case STATUS_PARAMETER_TAG:
1787     dissect_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1788     break;
1789   case ASP_IDENTIFIER_PARAMETER_TAG:
1790     dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1791     break;
1792   case AFFECTED_POINT_CODE_PARAMETER_TAG:
1793     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1794     break;
1795   case NETWORK_APPEARANCE_PARAMETER_TAG:
1796     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1797     break;
1798   case USER_CAUSE_PARAMETER_TAG:
1799     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1800     break;
1801   case CONGESTION_INDICATIONS_PARAMETER_TAG:
1802     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1803     break;
1804   case CONCERNED_DESTINATION_PARAMETER_TAG:
1805     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1806     break;
1807   case ROUTING_KEY_PARAMETER_TAG:
1808     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1809     break;
1810   case REGISTRATION_RESULT_PARAMETER_TAG:
1811     dissect_registration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1812     break;
1813   case DEREGISTRATION_RESULT_PARAMETER_TAG:
1814     dissect_deregistration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1815     break;
1816   case LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1817     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1818     break;
1819   case DESTINATION_POINT_CODE_PARAMETER_TAG:
1820     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1821     break;
1822   case SERVICE_INDICATORS_PARAMETER_TAG:
1823     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1824     break;
1825   case ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1826     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1827     break;
1828   case CIRCUIT_RANGE_PARAMETER_TAG:
1829     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1830     break;
1831   case PROTOCOL_DATA_PARAMETER_TAG:
1832     dissect_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1833     break;
1834   case CORRELATION_IDENTIFIER_PARAMETER_TAG:
1835     dissect_correlation_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1836     break;
1837   case REGISTRATION_STATUS_PARAMETER_TAG:
1838     dissect_registration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1839     break;
1840   case DEREGISTRATION_STATUS_PARAMETER_TAG:
1841     dissect_deregistration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1842     break;
1843   default:
1844     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1845     break;
1846   };
1847
1848   if (padding_length > 0)
1849     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
1850 }
1851
1852 static void
1853 dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1854 {
1855   gint offset, length, total_length, remaining_length;
1856   tvbuff_t *parameter_tvb;
1857
1858   offset = 0;
1859   while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
1860     length       = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
1861     total_length = ADD_PADDING(length);
1862     if (remaining_length >= length)
1863       total_length = MIN(total_length, remaining_length);
1864     /* create a tvb for the parameter including the padding bytes */
1865     parameter_tvb    = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
1866     switch(version) {
1867       case M3UA_V5:
1868         dissect_v5_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1869         break;
1870       case M3UA_V6:
1871         dissect_v6_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1872         break;
1873       case M3UA_V7:
1874         dissect_v7_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1875         break;
1876       case M3UA_RFC:
1877         dissect_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1878         break;
1879     }
1880     /* get rid of the handled parameter */
1881     offset += total_length;
1882   }
1883 }
1884
1885
1886 static void
1887 dissect_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1888 {
1889   tvbuff_t *common_header_tvb, *parameters_tvb;
1890
1891   common_header_tvb = tvb_new_subset(message_tvb, 0, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
1892   parameters_tvb    = tvb_new_subset(message_tvb, COMMON_HEADER_LENGTH, -1, -1);
1893   if (version == M3UA_V5)
1894         dissect_v5_common_header(common_header_tvb, pinfo, m3ua_tree);
1895   else
1896     dissect_common_header(common_header_tvb, pinfo, m3ua_tree);
1897
1898   /*  Need to dissect (certain) parameters even when !tree, so subdissectors
1899    *  (e.g., MTP3) are always called.
1900    */
1901   dissect_parameters(parameters_tvb, pinfo, tree, m3ua_tree);
1902 }
1903
1904 static void
1905 dissect_m3ua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
1906 {
1907   proto_item *m3ua_item;
1908   proto_tree *m3ua_tree;
1909
1910
1911   /* make entry in the Protocol column on summary display */
1912   if (check_col(pinfo->cinfo, COL_PROTOCOL))
1913     switch(version) {
1914       case M3UA_V5:
1915         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 05)");
1916         break;
1917       case M3UA_V6:
1918         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 06)");
1919         break;
1920       case M3UA_V7:
1921         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 07)");
1922         break;
1923       case M3UA_RFC:
1924         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (RFC 3332)");
1925         break;
1926       };
1927
1928   /* In the interest of speed, if "tree" is NULL, don't do any work not
1929      necessary to generate protocol tree items. */
1930   if (tree) {
1931     /* create the m3ua protocol tree */
1932     m3ua_item = proto_tree_add_item(tree, proto_m3ua, message_tvb, 0, -1, FALSE);
1933     m3ua_tree = proto_item_add_subtree(m3ua_item, ett_m3ua);
1934   } else {
1935     m3ua_tree = NULL;
1936   };
1937
1938   /* dissect the message */
1939   dissect_message(message_tvb, pinfo, tree, m3ua_tree);
1940
1941 }
1942
1943 /* Register the protocol with Wireshark */
1944 void
1945 proto_register_m3ua(void)
1946 {
1947
1948   /* Setup list of header fields */
1949   static hf_register_info hf[] = {
1950     { &hf_version,                          { "Version",                      "m3ua.version",                               FT_UINT8,  BASE_DEC,  VALS(protocol_version_values),                0x0, "", HFILL } },
1951     { &hf_reserved,                         { "Reserved",                     "m3ua.reserved",                              FT_UINT8,  BASE_HEX,  NULL,                                         0x0, "", HFILL } },
1952     { &hf_v5_message_class,                 { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(v5_message_class_values),                0x0, "", HFILL } },
1953     { &hf_message_class,                    { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(message_class_values),                   0x0, "", HFILL } },
1954     { &hf_message_type,                     { "Message Type",                 "m3ua.message_type",                          FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1955     { &hf_message_length,                   { "Message length",               "m3ua.message_length",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1956     { &hf_v5_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v5_parameter_tag_values),                0x0, "", HFILL } },
1957     { &hf_v6_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v6_parameter_tag_values),                0x0, "", HFILL } },
1958     { &hf_v7_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v7_parameter_tag_values),                0x0, "", HFILL } },
1959     { &hf_parameter_tag,                    { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(parameter_tag_values),                   0x0, "", HFILL } },
1960     { &hf_parameter_length,                 { "Parameter length",             "m3ua.parameter_length",                      FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1961     { &hf_parameter_value,                  { "Parameter value",              "m3ua.parameter_value",                       FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1962     { &hf_parameter_padding,                { "Padding",                      "m3ua.parameter_padding",                     FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1963     { &hf_parameter_trailer,                { "Trailer",                      "m3ua.paramter_trailer",                      FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1964     { &hf_network_appearance,               { "Network appearance",           "m3ua.network_appearance",                    FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1965     { &hf_info_string,                      { "Info string",                  "m3ua.info_string",                           FT_STRING, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1966     { &hf_routing_context,                  { "Routing context",              "m3ua.routing_context",                       FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1967     { &hf_diagnostic_information,           { "Diagnostic information",       "m3ua.diagnostic_information",                FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1968     { &hf_heartbeat_data,                   { "Heartbeat data",               "m3ua.heartbeat_data",                        FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1969     { &hf_v5_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v5_error_code_values),                   0x0, "", HFILL } },
1970     { &hf_v6_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v6_error_code_values),                   0x0, "", HFILL } },
1971     { &hf_v7_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v7_error_code_values),                   0x0, "", HFILL } },
1972     { &hf_error_code,                       { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(error_code_values),                      0x0, "", HFILL } },
1973     { &hf_status_type,                      { "Status type",                  "m3ua.status_type",                           FT_UINT16, BASE_DEC,  VALS(status_type_values),                     0x0, "", HFILL } },
1974     { &hf_status_info,                      { "Status info",                  "m3ua.status_info",                           FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1975     { &hf_asp_identifier,                   { "ASP identifier",               "m3ua.asp_identifier",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1976     { &hf_affected_point_code_mask,         { "Mask",                         "m3ua.affected_point_code_mask",              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1977     { &hf_affected_point_code_pc,           { "Affected point code",          "m3ua.affected_point_code_pc",                FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1978     { &hf_cause,                            { "Unavailability cause",         "m3ua.unavailability_cause",                  FT_UINT16, BASE_DEC,  VALS(unavailability_cause_values),            0x0, "", HFILL } },
1979     { &hf_user,                             { "User Identity",                "m3ua.user_identity",                         FT_UINT16, BASE_DEC,  VALS(user_identity_values),                   0x0, "", HFILL } },
1980     { &hf_reason,                           { "Reason",                       "m3ua.reason",                                FT_UINT32, BASE_DEC,  VALS(reason_values),                          0x0, "", HFILL } },
1981     { &hf_v5_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v5_traffic_mode_type_values),            0x0, "", HFILL } },
1982     { &hf_v6_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v6_traffic_mode_type_values),            0x0, "", HFILL } },
1983     { &hf_v7_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v7_traffic_mode_type_values),            0x0, "", HFILL } },
1984     { &hf_traffic_mode_type,                { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(traffic_mode_type_values),               0x0, "", HFILL } },
1985     { &hf_congestion_reserved,              { "Reserved",                     "m3ua.congestion_reserved",                   FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1986     { &hf_congestion_level,                 { "Congestion level",             "m3ua.congestion_level",                      FT_UINT8,  BASE_DEC,  VALS(congestion_level_values),                0x0, "", HFILL } },
1987     { &hf_concerned_dest_reserved,          { "Reserved",                     "m3ua.concerned_reserved",                    FT_BYTES,  BASE_NONE, NULL,                                         0x0, "", HFILL } },
1988     { &hf_concerned_dest_pc,                { "Concerned DPC",                "m3ua.concerned_dpc",                         FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1989     { &hf_local_rk_identifier,              { "Local routing key identifier", "m3ua.local_rk_identifier",                   FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1990     { &hf_dpc_mask,                         { "Mask",                         "m3ua.dpc_mask",                              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1991     { &hf_dpc_pc,                           { "Destination point code",       "m3ua.dpc_pc",                                FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1992     { &hf_si,                               { "Service indicator",            "m3ua.si",                                    FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                   0x0, "", HFILL } },
1993     { &hf_ssn,                              { "Subsystem number",             "m3ua.ssn",                                   FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1994     { &hf_opc_list_mask,                    { "Mask",                         "m3ua.opc_list_mask",                         FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1995     { &hf_opc_list_pc,                      { "Originating point code",       "m3ua.opc_list_pc",                           FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1996     { &hf_cic_range_mask,                   { "Mask",                         "m3ua.cic_range_mask",                        FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1997     { &hf_cic_range_pc,                     { "Originating point code",       "m3ua.cic_range_pc",                          FT_UINT24, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1998     { &hf_cic_range_lower,                  { "Lower CIC value",              "m3ua.cic_range_lower",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
1999     { &hf_cic_range_upper,                  { "Upper CIC value",              "m3ua.cic_range_upper",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2000     { &hf_li,                               { "Length indicator",             "m3ua.protocol_data_2_li",                    FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2001     { &hf_protocol_data_opc,                { "OPC",                          "m3ua.protocol_data_opc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2002     { &hf_protocol_data_dpc,                { "DPC",                          "m3ua.protocol_data_dpc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2003     { &hf_protocol_data_mtp3_opc,                { "OPC",                          "mtp3.opc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2004     { &hf_protocol_data_mtp3_dpc,                { "DPC",                          "mtp3.dpc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2005     { &hf_protocol_data_mtp3_pc,                { "PC",                          "mtp3.pc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2006     { &hf_protocol_data_si,                 { "SI",                           "m3ua.protocol_data_si",                      FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                                         0x0, "", HFILL } },
2007     { &hf_protocol_data_ni,                 { "NI",                           "m3ua.protocol_data_ni",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2008     { &hf_protocol_data_mtp3_ni,                 { "NI",                           "mtp3.ni",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2009     { &hf_protocol_data_mp,                 { "MP",                           "m3ua.protocol_data_mp",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2010     { &hf_protocol_data_sls,                { "SLS",                          "m3ua.protocol_data_sls",                     FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2011     { &hf_correlation_identifier,           { "Correlation Identifier",       "m3ua.correlation_identifier",                FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2012     { &hf_registration_status,              { "Registration status",          "m3ua.registration_status",                   FT_UINT32, BASE_DEC,  VALS(registration_status_values),             0x0, "", HFILL } },
2013     { &hf_deregistration_status,            { "Deregistration status",        "m3ua.deregistration_status",                 FT_UINT32, BASE_DEC,  VALS(deregistration_status_values),           0x0, "", HFILL } },
2014     { &hf_registration_result_identifier,   { "Local RK-identifier value",    "m3ua.registration_result_identifier",        FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2015     { &hf_registration_result_status,       { "Registration status",          "m3ua.registration_results_status",           FT_UINT32, BASE_DEC,  VALS(registration_result_status_values),      0x0, "", HFILL } },
2016     { &hf_registration_result_context,      { "Routing context",              "m3ua.registration_result_routing_context",   FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2017     { &hf_v6_deregistration_result_status,  { "De-Registration status",       "m3ua.deregistration_results_status",         FT_UINT32, BASE_DEC,  VALS(v6_deregistration_result_status_values), 0x0, "", HFILL } },
2018     { &hf_v6_deregistration_result_context, { "Routing context",              "m3ua.deregistration_result_routing_context", FT_UINT32, BASE_DEC,  NULL,                                         0x0, "", HFILL } },
2019   };
2020
2021   /* Setup protocol subtree array */
2022   static gint *ett[] = {
2023     &ett_m3ua,
2024     &ett_parameter,
2025     &ett_mtp3_equiv,
2026   };
2027
2028   static enum_val_t options[] = {
2029     { "draft-5", "Internet Draft version 5",        M3UA_V5  },
2030     { "draft-6", "Internet Draft version 6",        M3UA_V6  },
2031     { "draft-7", "Internet Draft version 7",        M3UA_V7  },
2032     { "rfc3332", "RFC 3332",                        M3UA_RFC },
2033     { NULL, NULL, 0 }
2034   };
2035
2036   /* Register the protocol name and description */
2037   proto_m3ua = proto_register_protocol("MTP 3 User Adaptation Layer", "M3UA",  "m3ua");
2038   register_dissector("m3ua", dissect_m3ua, proto_m3ua);
2039
2040   m3ua_module = prefs_register_protocol(proto_m3ua, NULL);
2041   prefs_register_enum_preference(m3ua_module, "version", "M3UA Version", "Version used by Wireshark", &version, options, FALSE);
2042
2043   /* Required function calls to register the header fields and subtrees used */
2044   proto_register_field_array(proto_m3ua, hf, array_length(hf));
2045   proto_register_subtree_array(ett, array_length(ett));
2046
2047   m3ua_tap = register_tap("m3ua");
2048
2049 }
2050
2051 void
2052 proto_reg_handoff_m3ua(void)
2053 {
2054   dissector_handle_t m3ua_handle;
2055
2056   /*
2057    * Get a handle for the MTP3 dissector.
2058    */
2059   mtp3_handle = find_dissector("mtp3");
2060   data_handle = find_dissector("data");
2061   m3ua_handle = create_dissector_handle(dissect_m3ua, proto_m3ua);
2062   dissector_add("sctp.ppi",  M3UA_PAYLOAD_PROTOCOL_ID, m3ua_handle);
2063   dissector_add("sctp.port", SCTP_PORT_M3UA, m3ua_handle);
2064
2065   si_dissector_table = find_dissector_table("mtp3.service_indicator");
2066 }