epan/dissectors/packet-m3ua.c

   1 /* packet-m3ua.c
   2  * Routines for MTP3 User Adaptation Layer dissection
   3  * It is hopefully (needs testing) compliant 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 <stdlib.h>
  39
  40
  41 #include <glib.h>
  42
  43 #include <epan/packet.h>
  44 #include <epan/prefs.h>
  45 #include <epan/sctpppids.h>
  46 #include <epan/emem.h>
  47 #include "packet-mtp3.h"
  48 #include "packet-q708.h"
  49 #include <epan/tap.h>
  50
  51 #define SCTP_PORT_M3UA         2905
  52 #define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
  53
  54 #define VERSION_LENGTH         1
  55 #define RESERVED_LENGTH        1
  56 #define MESSAGE_CLASS_LENGTH   1
  57 #define MESSAGE_TYPE_LENGTH    1
  58 #define MESSAGE_LENGTH_LENGTH  4
  59 #define COMMON_HEADER_LENGTH   (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
  60                                 MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
  61
  62 #define VERSION_OFFSET         0
  63 #define RESERVED_OFFSET        (VERSION_OFFSET + VERSION_LENGTH)
  64 #define MESSAGE_CLASS_OFFSET   (RESERVED_OFFSET + RESERVED_LENGTH)
  65 #define MESSAGE_TYPE_OFFSET    (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
  66 #define MESSAGE_LENGTH_OFFSET  (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
  67
  68 #define PARAMETER_TAG_LENGTH    2
  69 #define PARAMETER_LENGTH_LENGTH 2
  70 #define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
  71
  72 #define PARAMETER_TAG_OFFSET    0
  73 #define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
  74 #define PARAMETER_VALUE_OFFSET  (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
  75 #define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
  76
  77 #define PROTOCOL_VERSION_RELEASE_1             1
  78
  79 static const value_string protocol_version_values[] = {
  80   { PROTOCOL_VERSION_RELEASE_1,  "Release 1" },
  81   { 0,                           NULL } };
  82
  83 #define MESSAGE_CLASS_MGMT_MESSAGE        0
  84 #define MESSAGE_CLASS_TFER_MESSAGE        1
  85 #define MESSAGE_CLASS_SSNM_MESSAGE        2
  86 #define MESSAGE_CLASS_ASPSM_MESSAGE       3
  87 #define MESSAGE_CLASS_ASPTM_MESSAGE       4
  88 #define MESSAGE_CLASS_RKM_MESSAGE         9
  89
  90 static const value_string message_class_values[] = {
  91   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
  92   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
  93   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
  94   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
  95   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
  96   { MESSAGE_CLASS_RKM_MESSAGE,    "Routing key management messages" },
  97   { 0,                           NULL } };
  98
  99 static const value_string v5_message_class_values[] = {
 100   { MESSAGE_CLASS_MGMT_MESSAGE,   "Management messages" },
 101   { MESSAGE_CLASS_TFER_MESSAGE,   "Transfer messages" },
 102   { MESSAGE_CLASS_SSNM_MESSAGE,   "SS7 signalling network management messages" },
 103   { MESSAGE_CLASS_ASPSM_MESSAGE,  "ASP state maintenance messages" },
 104   { MESSAGE_CLASS_ASPTM_MESSAGE,  "ASP traffic maintenance messages" },
 105   { 0,                           NULL } };
 106
 107 #define MESSAGE_TYPE_ERR                  0
 108 #define MESSAGE_TYPE_NTFY                 1
 109
 110 #define MESSAGE_TYPE_DATA                 1
 111
 112 #define MESSAGE_TYPE_DUNA                 1
 113 #define MESSAGE_TYPE_DAVA                 2
 114 #define MESSAGE_TYPE_DAUD                 3
 115 #define MESSAGE_TYPE_SCON                 4
 116 #define MESSAGE_TYPE_DUPU                 5
 117 #define MESSAGE_TYPE_DRST                 6
 118
 119 #define MESSAGE_TYPE_UP                   1
 120 #define MESSAGE_TYPE_DOWN                 2
 121 #define MESSAGE_TYPE_BEAT                 3
 122 #define MESSAGE_TYPE_UP_ACK               4
 123 #define MESSAGE_TYPE_DOWN_ACK             5
 124 #define MESSAGE_TYPE_BEAT_ACK             6
 125
 126 #define MESSAGE_TYPE_ACTIVE               1
 127 #define MESSAGE_TYPE_INACTIVE             2
 128 #define MESSAGE_TYPE_ACTIVE_ACK           3
 129 #define MESSAGE_TYPE_INACTIVE_ACK         4
 130
 131 #define MESSAGE_TYPE_REG_REQ              1
 132 #define MESSAGE_TYPE_REG_RSP              2
 133 #define MESSAGE_TYPE_DEREG_REQ            3
 134 #define MESSAGE_TYPE_DEREG_RSP            4
 135
 136 static const value_string v5_message_class_type_values[] = {
 137   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 138   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 139   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 140   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 141   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 142   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 143   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 144   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 145   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (UP)" },
 146   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (DOWN)" },
 147   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 148   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (UP ACK)" },
 149   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (DOWN ACK)" },
 150   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT ACK)" },
 151   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ACTIVE)" },
 152   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (INACTIVE)" },
 153   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ACTIVE ACK)" },
 154   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (INACTIVE ACK)" },
 155   { 0,                                                              NULL } };
 156
 157 static const value_string message_class_type_values[] = {
 158   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "Error (ERR)" },
 159   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "Notify (NTFY)" },
 160   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "Payload data (DATA)" },
 161   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "Destination unavailable (DUNA)" },
 162   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "Destination available (DAVA)" },
 163   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "Destination state audit (DAUD)" },
 164   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SS7 Network congestion state (SCON)" },
 165   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "Destination userpart unavailable (DUPU)" },
 166   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "Destination Restricted (DRST)" },
 167   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP up (ASPUP)" },
 168   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP down (ASPDN)" },
 169   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "Heartbeat (BEAT)" },
 170   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP up ack (ASPUP_ACK)" },
 171   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP down ack (ASPDN_ACK)" },
 172   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "Heartbeat ack (BEAT_ACK)" },
 173   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP active (ASPAC)" },
 174   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP inactive (ASPIA)" },
 175   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP active ack (ASPAC_ACK)" },
 176   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack (ASPIA_ACK)" },
 177   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "Registration request (REG_REQ)" },
 178   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "Registration response (REG_RSP)" },
 179   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "Deregistration request (DEREG_REQ)" },
 180   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "Deregistration response (DEREG_RSP)" },
 181   { 0,                           NULL } };
 182
 183 static const value_string v5_message_class_type_acro_values[] = {
 184   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 185   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 186   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 187   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 188   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 189   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 190   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 191   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 192   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASP_UP" },
 193   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASP_DOWN" },
 194   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 195   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASP_UP_ACK" },
 196   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASP_DOWN_ACK" },
 197   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 198   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASP_ACTIVE" },
 199   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASP_INACTIVE" },
 200   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASP_ACTIVE_ACK" },
 201   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
 202   { 0,                                                              NULL } };
 203
 204 static const value_string message_class_type_acro_values[] = {
 205   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_ERR,           "ERR" },
 206   { MESSAGE_CLASS_MGMT_MESSAGE  * 256 + MESSAGE_TYPE_NTFY,          "NTFY" },
 207   { MESSAGE_CLASS_TFER_MESSAGE  * 256 + MESSAGE_TYPE_DATA,          "DATA" },
 208   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUNA,          "DUNA" },
 209   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAVA,          "DAVA" },
 210   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DAUD,          "DAUD" },
 211   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_SCON,          "SCON" },
 212   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DUPU,          "DUPU" },
 213   { MESSAGE_CLASS_SSNM_MESSAGE  * 256 + MESSAGE_TYPE_DRST,          "DRST" },
 214   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP,            "ASPUP" },
 215   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN,          "ASPDN" },
 216   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT,          "BEAT" },
 217   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK,        "ASPUP_ACK" },
 218   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK,      "ASPDN_ACK" },
 219   { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK,      "BEAT_ACK" },
 220   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE ,       "ASPAC" },
 221   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE ,     "ASPIA" },
 222   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK ,   "ASPAC_ACK" },
 223   { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASPIA_ACK" },
 224   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_REQ ,      "REG_REQ" },
 225   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_REG_RSP ,      "REG_RSP" },
 226   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_REQ ,    "DEREG_REQ" },
 227   { MESSAGE_CLASS_RKM_MESSAGE   * 256 + MESSAGE_TYPE_DEREG_RSP ,    "DEREG_RSP" },
 228   { 0,                           NULL } };
 229
 230 /* Initialize the protocol and registered fields */
 231 static int proto_m3ua = -1;
 232 static int hf_version = -1;
 233 static int hf_reserved = -1;
 234 static int hf_message_class = -1;
 235 static int hf_v5_message_class = -1;
 236 static int hf_message_type = -1;
 237 static int hf_message_length = -1;
 238 static int hf_v5_parameter_tag = -1;
 239 static int hf_v6_parameter_tag = -1;
 240 static int hf_v7_parameter_tag = -1;
 241 static int hf_parameter_tag = -1;
 242 static int hf_parameter_length = -1;
 243 static int hf_parameter_value = -1;
 244 static int hf_parameter_padding = -1;
 245 static int hf_parameter_trailer = -1;
 246 static int hf_network_appearance = -1;
 247 static int hf_info_string = -1;
 248 static int hf_routing_context = -1;
 249 static int hf_diagnostic_information = -1;
 250 static int hf_heartbeat_data = -1;
 251 static int hf_v5_error_code = -1;
 252 static int hf_v6_error_code = -1;
 253 static int hf_v7_error_code = -1;
 254 static int hf_error_code = -1;
 255 static int hf_status_type = -1;
 256 static int hf_status_info = -1;
 257 static int hf_asp_identifier = -1;
 258 static int hf_affected_point_code_mask = -1;
 259 static int hf_affected_point_code_pc = -1;
 260 static int hf_cause = -1;
 261 static int hf_user = -1;
 262 static int hf_reason = -1;
 263 static int hf_v5_traffic_mode_type = -1;
 264 static int hf_v6_traffic_mode_type = -1;
 265 static int hf_v7_traffic_mode_type = -1;
 266 static int hf_traffic_mode_type = -1;
 267 static int hf_congestion_reserved = -1;
 268 static int hf_congestion_level = -1;
 269 static int hf_concerned_dest_reserved = -1;
 270 static int hf_concerned_dest_pc = -1;
 271 static int hf_local_rk_identifier = -1;
 272 static int hf_dpc_mask = -1;
 273 static int hf_dpc_pc = -1;
 274 static int hf_si = -1;
 275 static int hf_ssn = -1;
 276 static int hf_opc_list_mask = -1;
 277 static int hf_opc_list_pc = -1;
 278 static int hf_cic_range_mask = -1;
 279 static int hf_cic_range_pc = -1;
 280 static int hf_cic_range_upper = -1;
 281 static int hf_cic_range_lower = -1;
 282 static int hf_protocol_data_opc = -1;
 283 static int hf_protocol_data_dpc = -1;
 284 static int hf_protocol_data_mtp3_opc = -1;
 285 static int hf_protocol_data_mtp3_dpc = -1;
 286 static int hf_protocol_data_mtp3_pc = -1;
 287 static int hf_protocol_data_si = -1;
 288 static int hf_protocol_data_ni = -1;
 289 static int hf_protocol_data_mtp3_ni = -1;
 290 static int hf_protocol_data_mp = -1;
 291 static int hf_protocol_data_sls = -1;
 292 static int hf_protocol_data_mtp3_sls = -1;
 293 static int hf_correlation_identifier = -1;
 294 static int hf_registration_status = -1;
 295 static int hf_deregistration_status = -1;
 296 static int hf_registration_result_identifier = -1;
 297 static int hf_registration_result_status = -1;
 298 static int hf_registration_result_context = -1;
 299 static int hf_v6_deregistration_result_status = -1;
 300 static int hf_v6_deregistration_result_context = -1;
 301 static int hf_li = -1;
 302
 303
 304 static int m3ua_tap = -1;
 305
 306 /* Initialize the subtree pointers */
 307 static gint ett_m3ua = -1;
 308 static gint ett_parameter = -1;
 309 static gint ett_mtp3_equiv = -1;
 310 static gint ett_q708_opc = -1;
 311 static gint ett_q708_dpc = -1;
 312
 313 static module_t *m3ua_module;
 314 static dissector_handle_t mtp3_handle, data_handle;
 315 static dissector_table_t si_dissector_table;
 316
 317 /* stuff for supporting multiple versions */
 318 typedef enum {
 319   M3UA_V5,
 320   M3UA_V6,
 321   M3UA_V7,
 322   M3UA_RFC
 323 } Version_Type;
 324
 325 static gint version = M3UA_RFC;
 326
 327
 328
 329 static void
 330 dissect_parameters(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
 331
 332 static void
 333 dissect_v5_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 334 {
 335   guint8  message_class, message_type;
 336
 337   /* Extract the common header */
 338   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 339   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 340
 341   if (check_col(pinfo->cinfo, COL_INFO))
 342     col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(message_class * 256 + message_type, v5_message_class_type_acro_values, "reserved"));
 343
 344   if (m3ua_tree) {
 345     /* add the components of the common header to the protocol tree */
 346     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, ENC_BIG_ENDIAN);
 347     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, ENC_BIG_ENDIAN);
 348     proto_tree_add_item(m3ua_tree, hf_v5_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, ENC_BIG_ENDIAN);
 349     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 350                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, v5_message_class_type_values, "reserved"), message_type);
 351     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
 352   }
 353 }
 354
 355 static void
 356 dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *m3ua_tree)
 357 {
 358   guint8  message_class, message_type;
 359
 360   /* Extract the common header */
 361   message_class  = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
 362   message_type   = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
 363
 364   if (check_col(pinfo->cinfo, COL_INFO))
 365     col_add_fstr(pinfo->cinfo, COL_INFO,"%s ", val_to_str(message_class * 256 + message_type, message_class_type_acro_values, "reserved"));
 366
 367   if (m3ua_tree) {
 368     /* add the components of the common header to the protocol tree */
 369     proto_tree_add_item(m3ua_tree, hf_version, common_header_tvb, VERSION_OFFSET, VERSION_LENGTH, ENC_BIG_ENDIAN);
 370     proto_tree_add_item(m3ua_tree, hf_reserved, common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH, ENC_BIG_ENDIAN);
 371     proto_tree_add_item(m3ua_tree, hf_message_class, common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH, ENC_BIG_ENDIAN);
 372     proto_tree_add_uint_format(m3ua_tree, hf_message_type, common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, message_type,
 373                                "Message type: %s (%u)", val_to_str(message_class * 256 + message_type, message_class_type_values, "reserved"), message_type);
 374     proto_tree_add_item(m3ua_tree, hf_message_length, common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
 375   }
 376 }
 377
 378 #define NETWORK_APPEARANCE_LENGTH 4
 379 #define NETWORK_APPEARANCE_OFFSET PARAMETER_VALUE_OFFSET
 380
 381 static void
 382 dissect_network_appearance_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 383 {
 384   proto_tree_add_item(parameter_tree, hf_network_appearance, parameter_tvb, NETWORK_APPEARANCE_OFFSET, NETWORK_APPEARANCE_LENGTH, ENC_BIG_ENDIAN);
 385   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, NETWORK_APPEARANCE_OFFSET));
 386 }
 387
 388 #define V5_PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
 389
 390 static void
 391 dissect_v5_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 392 {
 393   guint16 length, protocol_data_length;
 394   tvbuff_t *payload_tvb;
 395
 396   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 397   protocol_data_length = length - PARAMETER_HEADER_LENGTH;
 398   payload_tvb          = tvb_new_subset(parameter_tvb, V5_PROTOCOL_DATA_OFFSET, protocol_data_length, protocol_data_length);
 399   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 400   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 401   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 402 }
 403
 404 #define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
 405
 406 static void
 407 dissect_info_string_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 408 {
 409   guint16 info_string_length;
 410
 411   info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 412   proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, ENC_BIG_ENDIAN);
 413   proto_item_append_text(parameter_item, " (%.*s)", info_string_length,
 414                          (const char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length));
 415 }
 416
 417 #define AFFECTED_MASK_LENGTH 1
 418 #define AFFECTED_DPC_LENGTH  3
 419 #define AFFECTED_DESTINATION_LENGTH (AFFECTED_MASK_LENGTH + AFFECTED_DPC_LENGTH)
 420
 421 #define AFFECTED_MASK_OFFSET 0
 422 #define AFFECTED_DPC_OFFSET  1
 423
 424 static void
 425 dissect_affected_destinations_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 426 {
 427   guint16 number_of_destinations, destination_number;
 428   gint destination_offset;
 429   proto_item *item;
 430
 431   number_of_destinations = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 432   destination_offset = PARAMETER_VALUE_OFFSET;
 433   for(destination_number=1; destination_number <= number_of_destinations; destination_number++) {
 434     proto_tree_add_item(parameter_tree, hf_affected_point_code_mask, parameter_tvb, destination_offset + AFFECTED_MASK_OFFSET, AFFECTED_MASK_LENGTH, ENC_BIG_ENDIAN);
 435     item = proto_tree_add_item(parameter_tree, hf_affected_point_code_pc,   parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET,  AFFECTED_DPC_LENGTH,  ENC_BIG_ENDIAN);
 436     if (mtp3_pc_structured())
 437       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, destination_offset + AFFECTED_DPC_OFFSET)));
 438     destination_offset += AFFECTED_DESTINATION_LENGTH;
 439   }
 440   proto_item_append_text(parameter_item, " (%u destination%s)", number_of_destinations, plurality(number_of_destinations, "", "s"));
 441 }
 442
 443 #define ROUTING_CONTEXT_LENGTH 4
 444
 445 static void
 446 dissect_routing_context_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 447 {
 448   guint16 number_of_contexts, context_number;
 449   gint context_offset;
 450
 451   number_of_contexts = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) >> 2;
 452   context_offset = PARAMETER_VALUE_OFFSET;
 453   for(context_number=1; context_number <= number_of_contexts; context_number++) {
 454     proto_tree_add_item(parameter_tree, hf_routing_context, parameter_tvb, context_offset, ROUTING_CONTEXT_LENGTH, ENC_BIG_ENDIAN);
 455     context_offset += ROUTING_CONTEXT_LENGTH;
 456   };
 457   proto_item_append_text(parameter_item, " (%u context%s)", number_of_contexts, plurality(number_of_contexts, "", "s"));
 458 }
 459
 460 #define DIAGNOSTIC_INFO_OFFSET PARAMETER_VALUE_OFFSET
 461
 462 static void
 463 dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 464 {
 465   guint16 diag_info_length;
 466
 467   diag_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 468   proto_tree_add_item(parameter_tree, hf_diagnostic_information, parameter_tvb, DIAGNOSTIC_INFO_OFFSET, diag_info_length, ENC_BIG_ENDIAN);
 469   proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
 470 }
 471
 472 #define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
 473
 474 static void
 475 dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 476 {
 477   guint16 heartbeat_data_length;
 478
 479   heartbeat_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 480   proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, ENC_BIG_ENDIAN);
 481   proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
 482 }
 483
 484 #define UNKNOWN_UNAVAIL_CAUSE                  0
 485 #define UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE   1
 486 #define INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE 2
 487
 488 static const value_string unavailability_cause_values[] = {
 489   { UNKNOWN_UNAVAIL_CAUSE,                  "Unknown"                  },
 490   { UNEQUIPPED_REMOTE_USER_UNAVAIL_CAUSE,   "Unequipped remote user"   },
 491   { INACCESSIBLE_REMOTE_USER_UNAVAIL_CAUSE, "Inaccessible remote user" },
 492   {0,                                       NULL } };
 493
 494 #define RESERVED_0_USER_ID                0
 495 #define RESERVED_1_USER_ID                1
 496 #define RESERVED_2_USER_ID                2
 497 #define SCCP_USER_ID                      3
 498 #define TUP_USER_ID                       4
 499 #define ISUP_USER_ID                      5
 500 #define RESERVED_6_USER_ID                6
 501 #define RESERVED_7_USER_ID                7
 502 #define RESERVED_8_USER_ID                8
 503 #define BROADBAND_ISUP_USER_ID            9
 504 #define SATELLITE_ISUP_USER_ID           10
 505 #define RESERVED_11_USER_ID              11
 506 #define AAL_2_SIGNALING_USER_ID          12
 507 #define BICC_USER_ID                     13
 508 #define GATEWAY_CONTROL_PROTOCOL_USER_ID 14
 509 #define RESERVED_15_USER_ID              15
 510
 511 static const value_string user_identity_values[] = {
 512   { RESERVED_0_USER_ID,     "Reserved"       },
 513   { RESERVED_1_USER_ID,     "Reserved"       },
 514   { RESERVED_2_USER_ID,     "Reserved"       },
 515   { SCCP_USER_ID,           "SCCP"           },
 516   { TUP_USER_ID,            "TUP"            },
 517   { ISUP_USER_ID,           "ISUP"           },
 518   { RESERVED_6_USER_ID,     "Reserved"       },
 519   { RESERVED_7_USER_ID,     "Reserved"       },
 520   { RESERVED_8_USER_ID,     "Reserved"       },
 521   { BROADBAND_ISUP_USER_ID, "Broadband ISUP" },
 522   { SATELLITE_ISUP_USER_ID, "Satellite ISUP" },
 523   { RESERVED_11_USER_ID,    "Reserved"       },
 524   { AAL_2_SIGNALING_USER_ID,"AAL type2 Signaling"},
 525   { BICC_USER_ID,           "Bearer Independent Call Control (BICC)"},
 526   { GATEWAY_CONTROL_PROTOCOL_USER_ID, "Gateway Control Protocol"},
 527   { RESERVED_15_USER_ID,    "Reserved"       },
 528
 529   {0,                       NULL             } };
 530
 531 #define CAUSE_LENGTH 2
 532 #define USER_LENGTH  2
 533
 534 #define CAUSE_OFFSET  PARAMETER_VALUE_OFFSET
 535 #define USER_OFFSET   (CAUSE_OFFSET + CAUSE_LENGTH)
 536
 537 static void
 538 dissect_user_cause_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 539 {
 540   proto_tree_add_item(parameter_tree, hf_cause, parameter_tvb, CAUSE_OFFSET, CAUSE_LENGTH, ENC_BIG_ENDIAN);
 541   proto_tree_add_item(parameter_tree, hf_user,  parameter_tvb, USER_OFFSET,  USER_LENGTH,  ENC_BIG_ENDIAN);
 542   proto_item_append_text(parameter_item, " (%s: %s)",
 543                          val_to_str(tvb_get_ntohs(parameter_tvb, USER_OFFSET),  user_identity_values,        "Unknown user"),
 544                          val_to_str(tvb_get_ntohs(parameter_tvb, CAUSE_OFFSET), unavailability_cause_values, "unknown cause"));
 545 }
 546
 547 #define UNSPECIFIED_REASON          0
 548 #define USER_UNAVAILABLE_REASON     1
 549 #define MANAGEMENT_BLOCKING_REASON  2
 550
 551 static const value_string reason_values[] = {
 552   { UNSPECIFIED_REASON,         "Unspecified" },
 553   { USER_UNAVAILABLE_REASON,    "User unavailable" },
 554   { MANAGEMENT_BLOCKING_REASON, "Management blocking" },
 555   {0,                           NULL } };
 556
 557 #define REASON_LENGTH 4
 558 #define REASON_OFFSET PARAMETER_VALUE_OFFSET
 559
 560 static void
 561 dissect_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 562 {
 563   proto_tree_add_item(parameter_tree, hf_reason, parameter_tvb, REASON_OFFSET, REASON_LENGTH, ENC_BIG_ENDIAN);
 564   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REASON_OFFSET), reason_values, "unknown"));
 565 }
 566
 567 #define TRAFFIC_MODE_TYPE_LENGTH 4
 568 #define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 569
 570 static const value_string v5_traffic_mode_type_values[] = {
 571   { 1, "Over-ride"            },
 572   { 2, "Load-share"           },
 573   { 3, "Over-ride (standby)"  },
 574   { 4, "Load-share (standby)" },
 575   { 0, NULL                   } };
 576
 577 static void
 578 dissect_v5_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 579 {
 580   proto_tree_add_item(parameter_tree, hf_v5_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
 581   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"));
 582 }
 583
 584 static const value_string v6_traffic_mode_type_values[] = {
 585   { 1, "Over-ride"            },
 586   { 2, "Load-share"           },
 587   { 3, "Over-ride (standby)"  },
 588   { 4, "Load-share (standby)" },
 589   { 0, NULL                   } };
 590
 591 static void
 592 dissect_v6_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 593 {
 594   proto_tree_add_item(parameter_tree, hf_v6_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
 595   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"));
 596 }
 597
 598 static const value_string v7_traffic_mode_type_values[] = {
 599   { 1, "Over-ride"            },
 600   { 2, "Load-share"           },
 601   { 0, NULL                   } };
 602
 603 static void
 604 dissect_v7_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 605 {
 606   proto_tree_add_item(parameter_tree, hf_v7_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
 607   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"));
 608 }
 609
 610 static const value_string traffic_mode_type_values[] = {
 611   { 1, "Over-ride"  },
 612   { 2, "Load-share" },
 613   { 3, "Broadcast"  },
 614   { 0, NULL         } };
 615
 616 static void
 617 dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 618 {
 619   proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
 620   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "unknown"));
 621 }
 622
 623 #define ERROR_CODE_LENGTH 4
 624 #define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
 625
 626 static const value_string v5_error_code_values[] = {
 627   {  1, "Invalid version"               },
 628   {  2, "Invalid network appearance"    },
 629   {  3, "Unsupported message class"     },
 630   {  4, "Unsupported message type"      },
 631   {  5, "Invalid traffic handling mode" },
 632   {  6, "Unexpected message"            },
 633   {  7, "Protocol error"                },
 634   {  8, "Invalid routing context"       },
 635   {  0,  NULL                           } };
 636
 637 static void
 638 dissect_v5_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 639 {
 640   proto_tree_add_item(parameter_tree, hf_v5_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
 641   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v5_error_code_values, "unknown"));
 642 }
 643
 644 static const value_string v6_error_code_values[] = {
 645   {  1, "Invalid version"               },
 646   {  2, "Invalid network appearance"    },
 647   {  3, "Unsupported message class"     },
 648   {  4, "Unsupported message type"      },
 649   {  5, "Invalid traffic handling mode" },
 650   {  6, "Unexpected message"            },
 651   {  7, "Protocol error"                },
 652   {  8, "Invalid routing context"       },
 653   {  9, "Invalid stream identifier"     },
 654   { 10, "Invalid parameter value"       },
 655   {  0,  NULL                           } };
 656
 657
 658 static void
 659 dissect_v6_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 660 {
 661   proto_tree_add_item(parameter_tree, hf_v6_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
 662   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v6_error_code_values, "unknown"));
 663 }
 664
 665 static const value_string v7_error_code_values[] = {
 666   {  1, "Invalid version"               },
 667   {  2, "Invalid network appearance"    },
 668   {  3, "Unsupported message class"     },
 669   {  4, "Unsupported message type"      },
 670   {  5, "Invalid traffic handling mode" },
 671   {  6, "Unexpected message"            },
 672   {  7, "Protocol error"                },
 673   {  8, "Invalid routing context"       },
 674   {  9, "Invalid stream identifier"     },
 675   { 10, "Invalid parameter value"       },
 676   { 11, "Refused - Management Blocking" },
 677   { 12, "Unknown Routing Context"       },
 678   {  0,  NULL                           } };
 679
 680
 681 static void
 682 dissect_v7_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 683 {
 684   proto_tree_add_item(parameter_tree, hf_v7_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
 685   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), v7_error_code_values, "unknown"));
 686 }
 687
 688 static const value_string error_code_values[] = {
 689   { 0x01, "Invalid version"                   },
 690   { 0x03, "Unsupported message class"         },
 691   { 0x04, "Unsupported message type"          },
 692   { 0x05, "Unsupported traffic handling mode" },
 693   { 0x06, "Unexpected message"                },
 694   { 0x07, "Protocol error"                    },
 695   { 0x09, "Invalid stream identifier"         },
 696   { 0x0d, "Refused - management blocking"     },
 697   { 0x0e, "ASP identifier required"           },
 698   { 0x0f, "Invalid ASP identifier"            },
 699   { 0x11, "Invalid parameter value"           },
 700   { 0x12, "Parameter field error"             },
 701   { 0x13, "Unexpected parameter"              },
 702   { 0x14, "Destination status unknown"        },
 703   { 0x15, "Invalid network appearance"        },
 704   { 0x16, "Missing parameter"                 },
 705   { 0x19, "Invalid routing context"           },
 706   { 0x1a, "No configured AS for ASP"          },
 707   { 0,    NULL                                } };
 708
 709 static void
 710 dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 711 {
 712   proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
 713   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET), error_code_values, "unknown"));
 714 }
 715
 716 #define AS_STATE_CHANGE_TYPE       1
 717 #define OTHER_TYPE                 2
 718
 719 static const value_string status_type_values[] = {
 720   { AS_STATE_CHANGE_TYPE,            "Application server state change" },
 721   { OTHER_TYPE,                      "Other" },
 722   { 0,                           NULL } };
 723
 724 #define RESERVED_INFO              1
 725 #define AS_INACTIVE_INFO           2
 726 #define AS_ACTIVE_INFO             3
 727 #define AS_PENDING_INFO            4
 728
 729 #define INSUFFICIENT_ASP_RES_INFO  1
 730 #define ALTERNATE_ASP_ACTIVE_INFO  2
 731 #define ASP_FAILURE_INFO           3
 732
 733 static const value_string v567_status_type_info_values[] = {
 734   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 735   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 736   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 737   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 738   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 739   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 740   {0,                           NULL } };
 741
 742
 743 #define STATUS_TYPE_LENGTH 2
 744 #define STATUS_INFO_LENGTH 2
 745
 746 #define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
 747 #define STATUS_INFO_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
 748
 749 static void
 750 dissect_v567_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 751 {
 752   guint16 status_type, status_info;
 753
 754   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 755   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 756
 757   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, ENC_BIG_ENDIAN);
 758   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 759                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown"), status_info);
 760
 761   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, v567_status_type_info_values, "unknown status information"));
 762 }
 763
 764 static const value_string status_type_info_values[] = {
 765   { AS_STATE_CHANGE_TYPE * 256 * 256 + RESERVED_INFO,             "Reserved" },
 766   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_INACTIVE_INFO,          "Application server inactive" },
 767   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_ACTIVE_INFO,            "Application server active" },
 768   { AS_STATE_CHANGE_TYPE * 256 * 256 + AS_PENDING_INFO,           "Application server pending" },
 769   { OTHER_TYPE           * 256 * 256 + INSUFFICIENT_ASP_RES_INFO, "Insufficient ASP resources active in AS" },
 770   { OTHER_TYPE           * 256 * 256 + ALTERNATE_ASP_ACTIVE_INFO, "Alternate ASP active" },
 771   { OTHER_TYPE           * 256 * 256 + ASP_FAILURE_INFO,          "ASP Failure" },
 772   {0,                           NULL } };
 773
 774 static void
 775 dissect_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 776 {
 777   guint16 status_type, status_info;
 778
 779   status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
 780   status_info = tvb_get_ntohs(parameter_tvb, STATUS_INFO_OFFSET);
 781
 782   proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH, ENC_BIG_ENDIAN);
 783   proto_tree_add_uint_format(parameter_tree, hf_status_info, parameter_tvb, STATUS_INFO_OFFSET, STATUS_INFO_LENGTH, status_info,
 784                              "Status info: %s (%u)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown"), status_info);
 785
 786   proto_item_append_text(parameter_item, " (%s)", val_to_str(status_type * 256 * 256 + status_info, status_type_info_values, "unknown status information"));
 787 }
 788
 789 static const value_string congestion_level_values[] = {
 790   { 0, "No congestion or undefined" },
 791   { 1, "Congestion level 1"         },
 792   { 2, "Congestion level 2"         },
 793   { 3, "Congestion level 3"         },
 794   { 0, NULL                         } };
 795
 796 #define CONG_IND_RESERVED_LENGTH    3
 797 #define CONG_IND_LEVEL_LENGTH       1
 798
 799 #define CONG_IND_RESERVED_OFFSET     PARAMETER_VALUE_OFFSET
 800 #define CONG_IND_LEVEL_OFFSET        (CONG_IND_RESERVED_OFFSET + CONG_IND_RESERVED_LENGTH)
 801
 802 static void
 803 dissect_congestion_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 804 {
 805   proto_tree_add_item(parameter_tree, hf_congestion_reserved, parameter_tvb, CONG_IND_RESERVED_OFFSET, CONG_IND_RESERVED_LENGTH, ENC_BIG_ENDIAN);
 806   proto_tree_add_item(parameter_tree, hf_congestion_level,    parameter_tvb, CONG_IND_LEVEL_OFFSET,    CONG_IND_LEVEL_LENGTH,    ENC_BIG_ENDIAN);
 807   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_guint8(parameter_tvb, CONG_IND_LEVEL_OFFSET), congestion_level_values, "unknown"));
 808 }
 809
 810 #define ASP_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 811 #define ASP_IDENTIFIER_LENGTH  4
 812
 813 static void
 814 dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 815 {
 816   proto_tree_add_item(parameter_tree, hf_asp_identifier, parameter_tvb, ASP_IDENTIFIER_OFFSET, ASP_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
 817   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, ASP_IDENTIFIER_OFFSET));
 818 }
 819
 820 #define PROTOCOL_DATA_1_OFFSET PARAMETER_VALUE_OFFSET
 821
 822 static void
 823 dissect_protocol_data_1_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_item *parameter_item)
 824 {
 825   guint16 protocol_data_length;
 826   tvbuff_t *payload_tvb;
 827
 828   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
 829   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_1_OFFSET, protocol_data_length, protocol_data_length);
 830   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 831   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH);
 832   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 833 }
 834
 835 #define LI_OCTETT_LENGTH 1
 836 #define LI_OCTETT_OFFSET PARAMETER_VALUE_OFFSET
 837 #define PROTOCOL_DATA_2_OFFSET (PARAMETER_VALUE_OFFSET + LI_OCTETT_LENGTH)
 838
 839 static void
 840 dissect_protocol_data_2_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
 841 {
 842   guint8 li;
 843   guint16 protocol_data_length;
 844   tvbuff_t *payload_tvb;
 845
 846   li                   = tvb_get_guint8(parameter_tvb, LI_OCTETT_OFFSET);
 847   protocol_data_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - LI_OCTETT_LENGTH;
 848   payload_tvb          = tvb_new_subset(parameter_tvb, PROTOCOL_DATA_2_OFFSET, protocol_data_length, protocol_data_length);
 849   proto_tree_add_item(parameter_tree, hf_li, parameter_tvb, LI_OCTETT_OFFSET, LI_OCTETT_LENGTH, ENC_BIG_ENDIAN);
 850   proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
 851   proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + LI_OCTETT_LENGTH);
 852   call_dissector(mtp3_handle, payload_tvb, pinfo, tree);
 853 }
 854
 855
 856
 857 #define CON_DEST_RESERVED_LENGTH    1
 858 #define CON_DEST_PC_LENGTH          3
 859
 860 #define CON_DEST_RESERVED_OFFSET    PARAMETER_VALUE_OFFSET
 861 #define CON_DEST_PC_OFFSET          (CON_DEST_RESERVED_OFFSET + CON_DEST_RESERVED_LENGTH)
 862
 863 static void
 864 dissect_concerned_destination_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 865 {
 866   proto_item *item;
 867
 868   proto_tree_add_item(parameter_tree, hf_concerned_dest_reserved, parameter_tvb, CON_DEST_RESERVED_OFFSET, CON_DEST_RESERVED_LENGTH, ENC_BIG_ENDIAN);
 869   item = proto_tree_add_item(parameter_tree, hf_concerned_dest_pc,       parameter_tvb, CON_DEST_PC_OFFSET,       CON_DEST_PC_LENGTH,       ENC_BIG_ENDIAN);
 870   if (mtp3_pc_structured())
 871     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 872   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, CON_DEST_PC_OFFSET)));
 873 }
 874
 875 static void
 876 dissect_routing_key_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 877 {
 878   tvbuff_t *parameters_tvb;
 879   guint16 length, parameters_length;
 880
 881   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 882   parameters_length = length - PARAMETER_HEADER_LENGTH;
 883   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 884   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 885 }
 886
 887 static const value_string registration_result_status_values[] = {
 888   { 0, "Successfully Registered" } ,
 889   { 1, "Error - Unknown" } ,
 890   { 2, "Error - Invalid DPC" } ,
 891   { 3, "Error - Invalid Network Appearance" } ,
 892   { 4, "Error - Invalid Routing Key" } ,
 893   { 5, "Error - Permission Denied" } ,
 894   { 6, "Error - Overlapping (Non-unique) Routing Key" } ,
 895   { 7, "Error - Routing Key not Provisioned" } ,
 896   { 8, "Error - Insufficient Resources" } ,
 897   { 0, NULL } };
 898
 899 #define REG_RES_IDENTIFIER_LENGTH 4
 900 #define REG_RES_STATUS_LENGTH     4
 901 #define REG_RES_CONTEXT_LENGTH    4
 902
 903 #define REG_RES_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 904 #define REG_RES_STATUS_OFFSET     (REG_RES_IDENTIFIER_OFFSET + REG_RES_IDENTIFIER_LENGTH)
 905 #define REG_RES_CONTEXT_OFFSET    (REG_RES_STATUS_OFFSET + REG_RES_STATUS_LENGTH)
 906
 907 static void
 908 dissect_v67_registration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 909 {
 910   proto_tree_add_item(parameter_tree, hf_registration_result_identifier, parameter_tvb, REG_RES_IDENTIFIER_OFFSET, REG_RES_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
 911   proto_tree_add_item(parameter_tree, hf_registration_result_status,     parameter_tvb, REG_RES_STATUS_OFFSET,     REG_RES_STATUS_LENGTH,     ENC_BIG_ENDIAN);
 912   proto_tree_add_item(parameter_tree, hf_registration_result_context,    parameter_tvb, REG_RES_CONTEXT_OFFSET,    REG_RES_CONTEXT_LENGTH,    ENC_BIG_ENDIAN);
 913 }
 914
 915 static void
 916 dissect_registration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 917 {
 918   tvbuff_t *parameters_tvb;
 919   guint16 length, parameters_length;
 920
 921   length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 922   parameters_length = length - PARAMETER_HEADER_LENGTH;
 923   parameters_tvb          = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 924   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 925 }
 926
 927 static const value_string v6_deregistration_result_status_values[] = {
 928   { 0, "Successfully De-registered" } ,
 929   { 1, "Error - Unknown" } ,
 930   { 2, "Error - Invalid Routing context" } ,
 931   { 3, "Error - Permission Denied" } ,
 932   { 4, "Error - Not registered" } ,
 933   { 0, NULL } };
 934
 935 #define DEREG_RES_CONTEXT_LENGTH 4
 936 #define DEREG_RES_STATUS_LENGTH  4
 937
 938 #define DEREG_RES_CONTEXT_OFFSET PARAMETER_VALUE_OFFSET
 939 #define DEREG_RES_STATUS_OFFSET  (DEREG_RES_CONTEXT_OFFSET + DEREG_RES_CONTEXT_LENGTH)
 940
 941 static void
 942 dissect_v67_deregistration_result_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
 943 {
 944   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_context, parameter_tvb, DEREG_RES_CONTEXT_OFFSET, DEREG_RES_CONTEXT_LENGTH, ENC_BIG_ENDIAN);
 945   proto_tree_add_item(parameter_tree, hf_v6_deregistration_result_status,  parameter_tvb, DEREG_RES_STATUS_OFFSET,  DEREG_RES_STATUS_LENGTH,  ENC_BIG_ENDIAN);
 946 }
 947
 948 static void
 949 dissect_deregistration_result_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
 950 {
 951   tvbuff_t *parameters_tvb;
 952   guint16 length, parameters_length;
 953
 954   length            = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
 955   parameters_length = length - PARAMETER_HEADER_LENGTH;
 956   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
 957   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
 958 }
 959
 960
 961 #define LOCAL_RK_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
 962 #define LOCAL_RK_IDENTIFIER_LENGTH 4
 963
 964 static void
 965 dissect_local_routing_key_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 966 {
 967   guint32 id;
 968
 969   id = tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET);
 970   proto_tree_add_item(parameter_tree, hf_local_rk_identifier, parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET, LOCAL_RK_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
 971   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, LOCAL_RK_IDENTIFIER_OFFSET));
 972 }
 973
 974 #define DPC_MASK_LENGTH    1
 975 #define DPC_PC_LENGTH      3
 976
 977 #define DPC_MASK_OFFSET    PARAMETER_VALUE_OFFSET
 978 #define DPC_PC_OFFSET      (DPC_MASK_OFFSET + DPC_MASK_LENGTH)
 979
 980 static void
 981 dissect_destination_point_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 982 {
 983   proto_item *item;
 984
 985   proto_tree_add_item(parameter_tree, hf_dpc_mask, parameter_tvb, DPC_MASK_OFFSET, DPC_MASK_LENGTH, ENC_BIG_ENDIAN);
 986   item = proto_tree_add_item(parameter_tree, hf_dpc_pc,   parameter_tvb, DPC_PC_OFFSET,   DPC_PC_LENGTH,   ENC_BIG_ENDIAN);
 987   if (mtp3_pc_structured())
 988     proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 989   proto_item_append_text(parameter_item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, DPC_PC_OFFSET)));
 990 }
 991
 992 #define SI_LENGTH 1
 993
 994 static void
 995 dissect_service_indicators_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
 996 {
 997   guint16 length, number_of_sis, si_number;
 998   gint si_offset;
 999
1000   length        = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1001   number_of_sis = length - PARAMETER_HEADER_LENGTH;
1002
1003   si_offset = PARAMETER_VALUE_OFFSET;
1004   for(si_number=1; si_number <= number_of_sis; si_number++) {
1005     proto_tree_add_item(parameter_tree, hf_si, parameter_tvb, si_offset, SI_LENGTH, ENC_BIG_ENDIAN);
1006     si_offset += SI_LENGTH;
1007   };
1008   proto_item_append_text(parameter_item, " (%u indicator%s)", number_of_sis, plurality(number_of_sis, "", "s"));
1009
1010 }
1011 #define SSN_LENGTH 1
1012
1013 static void
1014 dissect_subsystem_numbers_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1015 {
1016   guint16 length, number_of_ssns, ssn_number;
1017   gint ssn_offset;
1018
1019   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1020   number_of_ssns = length - PARAMETER_HEADER_LENGTH;
1021
1022   ssn_offset = PARAMETER_VALUE_OFFSET;
1023   for(ssn_number=1; ssn_number <= number_of_ssns; ssn_number++) {
1024     proto_tree_add_item(parameter_tree, hf_ssn, parameter_tvb, ssn_offset, SSN_LENGTH, ENC_BIG_ENDIAN);
1025     ssn_offset += SSN_LENGTH;
1026   };
1027   proto_item_append_text(parameter_item, " (%u number%s)", number_of_ssns, plurality(number_of_ssns, "", "s"));
1028
1029 }
1030
1031 #define OPC_MASK_LENGTH             1
1032 #define OPC_PC_LENGTH               3
1033 #define OPC_LENGTH                  (OPC_MASK_LENGTH + OPC_PC_LENGTH)
1034 #define OPC_MASK_OFFSET             0
1035 #define OPC_PC_OFFSET               (OPC_MASK_OFFSET + OPC_MASK_LENGTH)
1036
1037 static void
1038 dissect_originating_point_code_list_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1039 {
1040   guint16 length, number_of_point_codes, point_code_number;
1041   gint point_code_offset;
1042   proto_item *item;
1043
1044   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1045   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / 4;
1046
1047   point_code_offset = PARAMETER_VALUE_OFFSET;
1048   for(point_code_number=1; point_code_number <= number_of_point_codes; point_code_number++) {
1049     proto_tree_add_item(parameter_tree, hf_opc_list_mask, parameter_tvb, point_code_offset + OPC_MASK_OFFSET, OPC_MASK_LENGTH, ENC_BIG_ENDIAN);
1050     item = proto_tree_add_item(parameter_tree, hf_opc_list_pc,   parameter_tvb, point_code_offset + OPC_PC_OFFSET,   OPC_PC_LENGTH,   ENC_BIG_ENDIAN);
1051     if (mtp3_pc_structured())
1052       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntoh24(parameter_tvb, point_code_offset + OPC_PC_OFFSET)));
1053     point_code_offset += OPC_LENGTH;
1054   };
1055   proto_item_append_text(parameter_item, " (%u point code%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1056 }
1057
1058 #define CIC_RANGE_MASK_LENGTH             1
1059 #define CIC_RANGE_PC_LENGTH               3
1060 #define CIC_RANGE_LOWER_LENGTH            2
1061 #define CIC_RANGE_UPPER_LENGTH            2
1062 #define CIC_RANGE_LENGTH                  (CIC_RANGE_MASK_LENGTH + CIC_RANGE_PC_LENGTH + CIC_RANGE_LOWER_LENGTH + CIC_RANGE_UPPER_LENGTH)
1063 #define CIC_RANGE_MASK_OFFSET             0
1064 #define CIC_RANGE_PC_OFFSET               (CIC_RANGE_MASK_OFFSET + CIC_RANGE_MASK_LENGTH)
1065 #define CIC_RANGE_LOWER_OFFSET            (CIC_RANGE_PC_OFFSET + CIC_RANGE_PC_LENGTH)
1066 #define CIC_RANGE_UPPER_OFFSET            (CIC_RANGE_LOWER_OFFSET + CIC_RANGE_LOWER_LENGTH)
1067
1068 static void
1069 dissect_circuit_range_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1070 {
1071   guint16 length, number_of_point_codes, point_code_number, cic_low, cic_high;
1072   guint32 pc;
1073   gint point_code_offset;
1074   proto_item *pc_item, *cic_range_item;
1075   proto_tree *cic_range_tree;
1076   gchar *pc_string;
1077
1078   length                = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1079   number_of_point_codes = (length - PARAMETER_HEADER_LENGTH) / CIC_RANGE_LENGTH;
1080
1081   point_code_offset = PARAMETER_VALUE_OFFSET;
1082   for(point_code_number = 1; point_code_number <= number_of_point_codes; point_code_number++) {
1083     cic_range_item = proto_tree_add_text(parameter_tree, parameter_tvb, point_code_offset + CIC_RANGE_MASK_OFFSET, CIC_RANGE_LENGTH, "CIC range");
1084     cic_range_tree = proto_item_add_subtree(cic_range_item, ett_parameter);
1085
1086     proto_tree_add_item(cic_range_tree, hf_cic_range_mask,  parameter_tvb, point_code_offset + CIC_RANGE_MASK_OFFSET,  CIC_RANGE_MASK_LENGTH,  ENC_BIG_ENDIAN);
1087
1088     pc = tvb_get_ntoh24(parameter_tvb, point_code_offset + CIC_RANGE_PC_OFFSET);
1089     pc_string = mtp3_pc_to_str(pc);
1090     pc_item = proto_tree_add_item(cic_range_tree, hf_cic_range_pc,    parameter_tvb, point_code_offset + CIC_RANGE_PC_OFFSET,    CIC_RANGE_PC_LENGTH,    ENC_BIG_ENDIAN);
1091     if (mtp3_pc_structured())
1092       proto_item_append_text(pc_item, " (%s)", pc_string);
1093
1094     cic_low = tvb_get_ntohs(parameter_tvb, point_code_offset + CIC_RANGE_LOWER_OFFSET);
1095     proto_tree_add_item(cic_range_tree, hf_cic_range_lower, parameter_tvb, point_code_offset + CIC_RANGE_LOWER_OFFSET, CIC_RANGE_LOWER_LENGTH, ENC_BIG_ENDIAN);
1096     cic_high = tvb_get_ntohs(parameter_tvb, point_code_offset + CIC_RANGE_UPPER_OFFSET);
1097     proto_tree_add_item(cic_range_tree, hf_cic_range_upper, parameter_tvb, point_code_offset + CIC_RANGE_UPPER_OFFSET, CIC_RANGE_UPPER_LENGTH, ENC_BIG_ENDIAN);
1098
1099     proto_item_append_text(cic_range_item, " (%s: %d-%d)", pc_string, cic_low, cic_high);
1100     point_code_offset += CIC_RANGE_LENGTH;
1101   };
1102   proto_item_append_text(parameter_item, " (%u range%s)", number_of_point_codes, plurality(number_of_point_codes, "", "s"));
1103 }
1104
1105 #define DATA_OPC_LENGTH   4
1106 #define DATA_DPC_LENGTH   4
1107 #define DATA_SI_LENGTH    1
1108 #define DATA_NI_LENGTH    1
1109 #define DATA_MP_LENGTH    1
1110 #define DATA_SLS_LENGTH   1
1111 #define DATA_HDR_LENGTH   (DATA_OPC_LENGTH + DATA_DPC_LENGTH + DATA_SI_LENGTH + DATA_NI_LENGTH + DATA_MP_LENGTH + DATA_SLS_LENGTH)
1112
1113 #define DATA_OPC_OFFSET   PARAMETER_VALUE_OFFSET
1114 #define DATA_DPC_OFFSET   (DATA_OPC_OFFSET + DATA_OPC_LENGTH)
1115 #define DATA_SI_OFFSET    (DATA_DPC_OFFSET + DATA_DPC_LENGTH)
1116 #define DATA_NI_OFFSET    (DATA_SI_OFFSET  + DATA_SI_LENGTH)
1117 #define DATA_MP_OFFSET    (DATA_NI_OFFSET  + DATA_NI_LENGTH)
1118 #define DATA_SLS_OFFSET   (DATA_MP_OFFSET  + DATA_MP_LENGTH)
1119 #define DATA_ULP_OFFSET   (DATA_SLS_OFFSET + DATA_SLS_LENGTH)
1120
1121 static void
1122 dissect_protocol_data_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree, proto_item *parameter_item)
1123 {
1124   guint16 ulp_length;
1125   tvbuff_t *payload_tvb;
1126   proto_item *item;
1127   mtp3_tap_rec_t* mtp3_tap = ep_alloc0(sizeof(mtp3_tap_rec_t));
1128   proto_tree *q708_tree;
1129
1130
1131   mtp3_tap->addr_dpc.type = mtp3_standard;
1132   mtp3_tap->addr_dpc.pc = tvb_get_ntohl(parameter_tvb,DATA_DPC_OFFSET);
1133   mtp3_tap->addr_dpc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1134   SET_ADDRESS(&pinfo->dst, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) &mtp3_tap->addr_dpc);
1135
1136
1137   mtp3_tap->addr_opc.type = mtp3_standard;
1138   mtp3_tap->addr_opc.pc = tvb_get_ntohl(parameter_tvb,DATA_OPC_OFFSET);
1139   mtp3_tap->addr_opc.ni = tvb_get_guint8(parameter_tvb, DATA_NI_OFFSET);
1140   SET_ADDRESS(&pinfo->src, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) &mtp3_tap->addr_opc);
1141
1142   mtp3_tap->si_code = tvb_get_guint8(parameter_tvb, DATA_SI_OFFSET);
1143   mtp3_tap->size = 0;
1144
1145   tap_queue_packet(m3ua_tap, pinfo, mtp3_tap);
1146
1147   ulp_length  = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - DATA_HDR_LENGTH;
1148
1149   if (parameter_tree) {
1150     item = proto_tree_add_item(parameter_tree, hf_protocol_data_opc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, ENC_BIG_ENDIAN);
1151     if (mtp3_pc_structured())
1152       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_OPC_OFFSET)));
1153     if(mtp3_tap->addr_opc.ni == 0)
1154     {
1155         q708_tree = proto_item_add_subtree(item,ett_q708_opc);
1156         analyze_q708_ispc(parameter_tvb, q708_tree, DATA_OPC_OFFSET, DATA_OPC_LENGTH, mtp3_tap->addr_opc.pc);
1157     }
1158     item = proto_tree_add_item(parameter_tree, hf_protocol_data_dpc, parameter_tvb, DATA_DPC_OFFSET, DATA_DPC_LENGTH, ENC_BIG_ENDIAN);
1159     if (mtp3_pc_structured())
1160       proto_item_append_text(item, " (%s)", mtp3_pc_to_str(tvb_get_ntohl(parameter_tvb, DATA_DPC_OFFSET)));
1161     if(mtp3_tap->addr_dpc.ni == 0)
1162     {
1163         q708_tree = proto_item_add_subtree(item,ett_q708_dpc);
1164         analyze_q708_ispc(parameter_tvb, q708_tree, DATA_DPC_OFFSET, DATA_DPC_LENGTH, mtp3_tap->addr_dpc.pc);
1165     }
1166
1167     proto_tree_add_item(parameter_tree, hf_protocol_data_si,  parameter_tvb, DATA_SI_OFFSET,  DATA_SI_LENGTH,  ENC_BIG_ENDIAN);
1168     proto_tree_add_item(parameter_tree, hf_protocol_data_ni,  parameter_tvb, DATA_NI_OFFSET,  DATA_NI_LENGTH,  ENC_BIG_ENDIAN);
1169     proto_tree_add_item(parameter_tree, hf_protocol_data_mp,  parameter_tvb, DATA_MP_OFFSET,  DATA_MP_LENGTH,  ENC_BIG_ENDIAN);
1170     proto_tree_add_item(parameter_tree, hf_protocol_data_sls, parameter_tvb, DATA_SLS_OFFSET, DATA_SLS_LENGTH, ENC_BIG_ENDIAN);
1171
1172     proto_item_append_text(parameter_item, " (SS7 message of %u byte%s)", ulp_length, plurality(ulp_length, "", "s"));
1173     proto_item_set_len(parameter_item, PARAMETER_HEADER_LENGTH + DATA_HDR_LENGTH);
1174
1175     item = proto_tree_add_text(parameter_tree,parameter_tvb,0,0,"MTP3 equivalents");
1176     PROTO_ITEM_SET_GENERATED(item);
1177     parameter_tree = proto_item_add_subtree(item,ett_mtp3_equiv);
1178
1179     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_opc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, ENC_BIG_ENDIAN);
1180     PROTO_ITEM_SET_GENERATED(item);
1181     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_dpc, parameter_tvb, DATA_DPC_OFFSET, DATA_OPC_LENGTH, ENC_BIG_ENDIAN);
1182     PROTO_ITEM_SET_GENERATED(item);
1183     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_pc, parameter_tvb, DATA_OPC_OFFSET, DATA_OPC_LENGTH, ENC_BIG_ENDIAN);
1184     PROTO_ITEM_SET_GENERATED(item);
1185     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_pc, parameter_tvb, DATA_DPC_OFFSET, DATA_OPC_LENGTH, ENC_BIG_ENDIAN);
1186     PROTO_ITEM_SET_GENERATED(item);
1187     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_ni,  parameter_tvb, DATA_NI_OFFSET,  DATA_NI_LENGTH,  ENC_BIG_ENDIAN);
1188     PROTO_ITEM_SET_GENERATED(item);
1189     item = proto_tree_add_item(parameter_tree, hf_protocol_data_mtp3_sls, parameter_tvb, DATA_SLS_OFFSET, DATA_SLS_LENGTH, ENC_BIG_ENDIAN);
1190     PROTO_ITEM_SET_GENERATED(item);
1191
1192   }
1193
1194   payload_tvb = tvb_new_subset(parameter_tvb, DATA_ULP_OFFSET, ulp_length, ulp_length);
1195   if (!dissector_try_port(si_dissector_table, tvb_get_guint8(parameter_tvb, DATA_SI_OFFSET), payload_tvb, pinfo, tree))
1196     call_dissector(data_handle, payload_tvb, pinfo, tree);
1197 }
1198
1199 #define CORR_ID_OFFSET PARAMETER_VALUE_OFFSET
1200 #define CORR_ID_LENGTH 4
1201
1202 static void
1203 dissect_correlation_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1204 {
1205   proto_tree_add_item(parameter_tree, hf_correlation_identifier, parameter_tvb, CORR_ID_OFFSET, CORR_ID_LENGTH, ENC_BIG_ENDIAN);
1206   proto_item_append_text(parameter_item, " (%u)", tvb_get_ntohl(parameter_tvb, CORR_ID_OFFSET));
1207 }
1208
1209 #define REG_STATUS_LENGTH  4
1210 #define REG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1211
1212 static const value_string registration_status_values[] = {
1213   {  0, "Successfully Registered" },
1214   {  1, "Error - Unknown" },
1215   {  2, "Error - Invalid DPC" },
1216   {  3, "Error - Invalid Network Appearance" },
1217   {  4, "Error - Invalid Routing Key" },
1218   {  5, "Error - Permission Denied" },
1219   {  6, "Error - Cannot Support Unique Routing" },
1220   {  7, "Error - Routing Key not Currently Provisioned" },
1221   {  8, "Error - Insufficient Resources" },
1222   {  9, "Error - Unsupported RK parameter Field" },
1223   { 10, "Error - Unsupported/Invalid Traffic Handling Mode" },
1224   { 11, "Error - Routing Key Change Refused" },
1225   { 12, "Error - Routing Key Already Registered" },
1226   {  0, NULL } };
1227
1228 static void
1229 dissect_registration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1230 {
1231   proto_tree_add_item(parameter_tree, hf_registration_status, parameter_tvb, REG_STATUS_OFFSET, REG_STATUS_LENGTH, ENC_BIG_ENDIAN);
1232   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, REG_STATUS_OFFSET), registration_status_values, "unknown"));
1233 }
1234
1235 #define DEREG_STATUS_LENGTH  4
1236 #define DEREG_STATUS_OFFSET  PARAMETER_VALUE_OFFSET
1237
1238 static const value_string deregistration_status_values[] = {
1239   { 0, "Successfully Deregistered" },
1240   { 1, "Error - Unknown" },
1241   { 2, "Error - Invalid Routing Context" },
1242   { 3, "Error - Permission Denied" },
1243   { 4, "Error - Not Registered" },
1244   { 5, "Error - ASP Currently Active for Routing Context" },
1245   { 0, NULL } };
1246
1247 static void
1248 dissect_deregistration_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1249 {
1250   proto_tree_add_item(parameter_tree, hf_deregistration_status, parameter_tvb, DEREG_STATUS_OFFSET, DEREG_STATUS_LENGTH, ENC_BIG_ENDIAN);
1251   proto_item_append_text(parameter_item, " (%s)", val_to_str(tvb_get_ntohl(parameter_tvb, DEREG_STATUS_OFFSET), deregistration_status_values, "unknown"));
1252 }
1253
1254 static void
1255 dissect_registration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1256 {
1257   tvbuff_t *parameters_tvb;
1258   guint16 parameters_length;
1259
1260   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1261   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1262   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1263 }
1264
1265 static void
1266 dissect_deregistration_results_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *parameter_tree)
1267 {
1268   tvbuff_t *parameters_tvb;
1269   guint16 parameters_length;
1270
1271   parameters_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1272   parameters_tvb    = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, parameters_length, parameters_length);
1273   dissect_parameters(parameters_tvb, pinfo, tree, parameter_tree);
1274 }
1275
1276 static void
1277 dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
1278 {
1279   guint16 tag, parameter_value_length;
1280
1281   tag                    = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1282   parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
1283   proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_BIG_ENDIAN);
1284   proto_item_append_text(parameter_item, " (tag %u and %u byte%s value)", tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
1285 }
1286
1287 #define V5_NETWORK_APPEARANCE_PARAMETER_TAG       1
1288 #define V5_PROTOCOL_DATA_PARAMETER_TAG            3
1289 #define V5_INFO_PARAMETER_TAG                     4
1290 #define V5_AFFECTED_DESTINATIONS_PARAMETER_TAG    5
1291 #define V5_ROUTING_CONTEXT_PARAMETER_TAG          6
1292 #define V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG   7
1293 #define V5_HEARTBEAT_DATA_PARAMETER_TAG           8
1294 #define V5_USER_CAUSE_PARAMETER_TAG               9
1295 #define V5_REASON_PARAMETER_TAG                   10
1296 #define V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG        11
1297 #define V5_ERROR_CODE_PARAMETER_TAG               12
1298 #define V5_STATUS_PARAMETER_TAG                   13
1299 #define V5_CONGESTION_INDICATION_PARAMETER_TAG    14
1300
1301 static const value_string v5_parameter_tag_values[] = {
1302   { V5_NETWORK_APPEARANCE_PARAMETER_TAG,     "Network appearance" },
1303   { V5_PROTOCOL_DATA_PARAMETER_TAG,          "Protocol data" },
1304   { V5_INFO_PARAMETER_TAG,                   "Info" },
1305   { V5_AFFECTED_DESTINATIONS_PARAMETER_TAG,  "Affected destinations" },
1306   { V5_ROUTING_CONTEXT_PARAMETER_TAG,        "Routing context" },
1307   { V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
1308   { V5_HEARTBEAT_DATA_PARAMETER_TAG,         "Heartbeat data" },
1309   { V5_USER_CAUSE_PARAMETER_TAG,             "User / Cause" },
1310   { V5_REASON_PARAMETER_TAG,                 "Reason" },
1311   { V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG,      "Traffic mode type" },
1312   { V5_ERROR_CODE_PARAMETER_TAG,             "Error code" },
1313   { V5_STATUS_PARAMETER_TAG,                 "Status" },
1314   { V5_CONGESTION_INDICATION_PARAMETER_TAG,  "Congestion indication" },
1315   { 0,                                       NULL } };
1316
1317 static void
1318 dissect_v5_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1319 {
1320   guint16 tag, length, padding_length;
1321   proto_item *parameter_item;
1322   proto_tree *parameter_tree;
1323
1324   /* extract tag and length from the parameter */
1325   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1326   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1327   padding_length = tvb_length(parameter_tvb) - length;
1328
1329   if (!tree && tag != V5_PROTOCOL_DATA_PARAMETER_TAG)
1330     return;    /* Nothing to do here */
1331
1332   /* create proto_tree stuff */
1333   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s", val_to_str(tag, v5_parameter_tag_values, "Unknown parameter"));
1334   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1335
1336   /* add tag and length to the parameter tree */
1337   proto_tree_add_item(parameter_tree, hf_v5_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    ENC_BIG_ENDIAN);
1338   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
1339
1340   switch(tag) {
1341   case V5_NETWORK_APPEARANCE_PARAMETER_TAG:
1342     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1343     break;
1344   case V5_PROTOCOL_DATA_PARAMETER_TAG:
1345     dissect_v5_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_item);
1346     break;
1347   case V5_INFO_PARAMETER_TAG:
1348     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1349     break;
1350   case V5_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1351     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1352     break;
1353   case V5_ROUTING_CONTEXT_PARAMETER_TAG:
1354     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1355     break;
1356   case V5_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1357     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1358     break;
1359   case V5_HEARTBEAT_DATA_PARAMETER_TAG:
1360     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1361     break;
1362   case V5_USER_CAUSE_PARAMETER_TAG:
1363     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1364     break;
1365   case V5_REASON_PARAMETER_TAG:
1366     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1367     break;
1368   case V5_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1369     dissect_v5_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1370     break;
1371   case V5_ERROR_CODE_PARAMETER_TAG:
1372     dissect_v5_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1373     break;
1374   case V5_STATUS_PARAMETER_TAG:
1375     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1376     break;
1377   case V5_CONGESTION_INDICATION_PARAMETER_TAG:
1378     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1379     break;
1380   default:
1381     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1382     break;
1383   };
1384   if (padding_length > 0)
1385     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_BIG_ENDIAN);
1386 }
1387
1388 #define V6_NETWORK_APPEARANCE_PARAMETER_TAG            1
1389 #define V6_PROTOCOL_DATA_1_PARAMETER_TAG               2
1390 #define V6_PROTOCOL_DATA_2_PARAMETER_TAG               3
1391 #define V6_INFO_PARAMETER_TAG                          4
1392 #define V6_AFFECTED_DESTINATIONS_PARAMETER_TAG         5
1393 #define V6_ROUTING_CONTEXT_PARAMETER_TAG               6
1394 #define V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        7
1395 #define V6_HEARTBEAT_DATA_PARAMETER_TAG                8
1396 #define V6_USER_CAUSE_PARAMETER_TAG                    9
1397 #define V6_REASON_PARAMETER_TAG                       10
1398 #define V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG            11
1399 #define V6_ERROR_CODE_PARAMETER_TAG                   12
1400 #define V6_STATUS_PARAMETER_TAG                       13
1401 #define V6_CONGESTION_INDICATION_PARAMETER_TAG        14
1402 #define V6_CONCERNED_DESTINATION_PARAMETER_TAG        15
1403 #define V6_ROUTING_KEY_PARAMETER_TAG                  16
1404 #define V6_REGISTRATION_RESULT_PARAMETER_TAG          17
1405 #define V6_DEREGISTRATION_RESULT_PARAMETER_TAG        18
1406 #define V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 19
1407 #define V6_DESTINATION_POINT_CODE_PARAMETER_TAG       20
1408 #define V6_SERVICE_INDICATORS_PARAMETER_TAG           21
1409 #define V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG            22
1410 #define V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  23
1411 #define V6_CIRCUIT_RANGE_PARAMETER_TAG                24
1412 #define V6_REGISTRATION_RESULTS_PARAMETER_TAG         25
1413 #define V6_DEREGISTRATION_RESULTS_PARAMETER_TAG       26
1414
1415 static const value_string v6_parameter_tag_values[] = {
1416   { V6_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1417   { V6_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1418   { V6_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1419   { V6_INFO_PARAMETER_TAG,                         "Info" },
1420   { V6_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1421   { V6_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1422   { V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1423   { V6_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1424   { V6_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1425   { V6_REASON_PARAMETER_TAG,                       "Reason" },
1426   { V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1427   { V6_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1428   { V6_STATUS_PARAMETER_TAG,                       "Status" },
1429   { V6_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1430   { V6_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1431   { V6_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1432   { V6_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1433   { V6_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1434   { V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1435   { V6_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1436   { V6_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1437   { V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1438   { V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1439   { V6_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1440   { V6_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1441   { V6_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1442   { 0,                           NULL } };
1443
1444 static void
1445 dissect_v6_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1446 {
1447   guint16 tag, length, padding_length;
1448   proto_item *parameter_item;
1449   proto_tree *parameter_tree;
1450
1451   /* extract tag and length from the parameter */
1452   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1453   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1454   padding_length = tvb_length(parameter_tvb) - length;
1455
1456   if (!tree && tag != V6_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V6_PROTOCOL_DATA_2_PARAMETER_TAG)
1457     return;    /* Nothing to do here */
1458
1459   /* create proto_tree stuff */
1460   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s", val_to_str(tag, v6_parameter_tag_values, "Unknown parameter"));
1461   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1462
1463   /* add tag and length to the parameter tree */
1464   proto_tree_add_item(parameter_tree, hf_v6_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    ENC_BIG_ENDIAN);
1465   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
1466
1467   switch(tag) {
1468   case V6_NETWORK_APPEARANCE_PARAMETER_TAG:
1469     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1470     break;
1471   case V6_PROTOCOL_DATA_1_PARAMETER_TAG:
1472     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1473     break;
1474   case V6_PROTOCOL_DATA_2_PARAMETER_TAG:
1475     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1476     break;
1477   case V6_INFO_PARAMETER_TAG:
1478     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1479     break;
1480   case V6_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1481     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1482     break;
1483   case V6_ROUTING_CONTEXT_PARAMETER_TAG:
1484     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1485     break;
1486   case V6_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1487     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1488     break;
1489   case V6_HEARTBEAT_DATA_PARAMETER_TAG:
1490     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1491     break;
1492   case V6_USER_CAUSE_PARAMETER_TAG:
1493     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1494     break;
1495   case V6_REASON_PARAMETER_TAG:
1496     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1497     break;
1498   case V6_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1499     dissect_v6_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1500     break;
1501   case V6_ERROR_CODE_PARAMETER_TAG:
1502     dissect_v6_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1503     break;
1504   case V6_STATUS_PARAMETER_TAG:
1505     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1506     break;
1507   case V6_CONGESTION_INDICATION_PARAMETER_TAG:
1508     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1509     break;
1510   case V6_CONCERNED_DESTINATION_PARAMETER_TAG:
1511     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1512     break;
1513   case V6_ROUTING_KEY_PARAMETER_TAG:
1514     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1515     break;
1516   case V6_REGISTRATION_RESULT_PARAMETER_TAG:
1517     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1518     break;
1519   case V6_DEREGISTRATION_RESULT_PARAMETER_TAG:
1520     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1521     break;
1522   case V6_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1523     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1524     break;
1525   case V6_DESTINATION_POINT_CODE_PARAMETER_TAG:
1526     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1527     break;
1528   case V6_SERVICE_INDICATORS_PARAMETER_TAG:
1529     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1530     break;
1531   case V6_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1532     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1533     break;
1534   case V6_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1535     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1536     break;
1537   case V6_CIRCUIT_RANGE_PARAMETER_TAG:
1538     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1539     break;
1540   case V6_REGISTRATION_RESULTS_PARAMETER_TAG:
1541     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1542     break;
1543   case V6_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1544     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1545     break;
1546   default:
1547     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1548     break;
1549   };
1550
1551   if (padding_length > 0)
1552     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_BIG_ENDIAN);
1553 }
1554
1555 #define V7_NETWORK_APPEARANCE_PARAMETER_TAG            0x80
1556 #define V7_PROTOCOL_DATA_1_PARAMETER_TAG               0x81
1557 #define V7_PROTOCOL_DATA_2_PARAMETER_TAG               0x82
1558 #define V7_INFO_PARAMETER_TAG                          0x04
1559 #define V7_AFFECTED_DESTINATIONS_PARAMETER_TAG         0x83
1560 #define V7_ROUTING_CONTEXT_PARAMETER_TAG               0x06
1561 #define V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG        0x07
1562 #define V7_HEARTBEAT_DATA_PARAMETER_TAG                0x09
1563 #define V7_USER_CAUSE_PARAMETER_TAG                    0x84
1564 #define V7_REASON_PARAMETER_TAG                        0x0a
1565 #define V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG             0x0b
1566 #define V7_ERROR_CODE_PARAMETER_TAG                    0x0c
1567 #define V7_STATUS_PARAMETER_TAG                        0x0d
1568 #define V7_CONGESTION_INDICATION_PARAMETER_TAG         0x85
1569 #define V7_CONCERNED_DESTINATION_PARAMETER_TAG         0x86
1570 #define V7_ROUTING_KEY_PARAMETER_TAG                   0x87
1571 #define V7_REGISTRATION_RESULT_PARAMETER_TAG           0x88
1572 #define V7_DEREGISTRATION_RESULT_PARAMETER_TAG         0x89
1573 #define V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG  0x8a
1574 #define V7_DESTINATION_POINT_CODE_PARAMETER_TAG        0x8b
1575 #define V7_SERVICE_INDICATORS_PARAMETER_TAG            0x8c
1576 #define V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG             0x8d
1577 #define V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG   0x8e
1578 #define V7_CIRCUIT_RANGE_PARAMETER_TAG                 0x8f
1579 #define V7_REGISTRATION_RESULTS_PARAMETER_TAG          0x90
1580 #define V7_DEREGISTRATION_RESULTS_PARAMETER_TAG        0x91
1581
1582 static const value_string v7_parameter_tag_values[] = {
1583   { V7_NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" },
1584   { V7_PROTOCOL_DATA_1_PARAMETER_TAG,              "Protocol data 1" },
1585   { V7_PROTOCOL_DATA_2_PARAMETER_TAG,              "Protocol data 2" },
1586   { V7_INFO_PARAMETER_TAG,                         "Info" },
1587   { V7_AFFECTED_DESTINATIONS_PARAMETER_TAG,        "Affected destinations" },
1588   { V7_ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" },
1589   { V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic information" },
1590   { V7_HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" },
1591   { V7_USER_CAUSE_PARAMETER_TAG,                   "User / Cause" },
1592   { V7_REASON_PARAMETER_TAG,                       "Reason" },
1593   { V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" },
1594   { V7_ERROR_CODE_PARAMETER_TAG,                   "Error code" },
1595   { V7_STATUS_PARAMETER_TAG,                       "Status" },
1596   { V7_CONGESTION_INDICATION_PARAMETER_TAG,        "Congestion indication" },
1597   { V7_CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" },
1598   { V7_ROUTING_KEY_PARAMETER_TAG,                  "Routing Key" },
1599   { V7_REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" },
1600   { V7_DEREGISTRATION_RESULT_PARAMETER_TAG,        "De-registration result" },
1601   { V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" },
1602   { V7_DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" },
1603   { V7_SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" },
1604   { V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG,            "Subsystem numbers" },
1605   { V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" },
1606   { V7_CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" },
1607   { V7_REGISTRATION_RESULTS_PARAMETER_TAG,         "Registration results" },
1608   { V7_DEREGISTRATION_RESULTS_PARAMETER_TAG,       "De-registration results" },
1609   { 0,                           NULL } };
1610
1611 static void
1612 dissect_v7_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1613 {
1614   guint16 tag, length, padding_length;
1615   proto_item *parameter_item;
1616   proto_tree *parameter_tree;
1617
1618   /* extract tag and length from the parameter */
1619   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1620   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1621   padding_length = tvb_length(parameter_tvb) - length;
1622
1623   if (!tree && tag != V7_PROTOCOL_DATA_1_PARAMETER_TAG && tag != V7_PROTOCOL_DATA_2_PARAMETER_TAG)
1624     return;    /* Nothing to do here */
1625
1626   /* create proto_tree stuff */
1627   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s", val_to_str(tag, v7_parameter_tag_values, "Unknown parameter"));
1628   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1629
1630   /* add tag and length to the parameter tree */
1631   proto_tree_add_item(parameter_tree, hf_v7_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    ENC_BIG_ENDIAN);
1632   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
1633
1634   switch(tag) {
1635   case V7_NETWORK_APPEARANCE_PARAMETER_TAG:
1636     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1637     break;
1638   case V7_PROTOCOL_DATA_1_PARAMETER_TAG:
1639     dissect_protocol_data_1_parameter(parameter_tvb, pinfo, tree, parameter_item);
1640     break;
1641   case V7_PROTOCOL_DATA_2_PARAMETER_TAG:
1642     dissect_protocol_data_2_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1643     break;
1644   case V7_INFO_PARAMETER_TAG:
1645     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1646     break;
1647   case V7_AFFECTED_DESTINATIONS_PARAMETER_TAG:
1648     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1649     break;
1650   case V7_ROUTING_CONTEXT_PARAMETER_TAG:
1651     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1652     break;
1653   case V7_DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1654     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1655     break;
1656   case V7_HEARTBEAT_DATA_PARAMETER_TAG:
1657     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1658     break;
1659   case V7_USER_CAUSE_PARAMETER_TAG:
1660     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1661     break;
1662   case V7_REASON_PARAMETER_TAG:
1663     dissect_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
1664     break;
1665   case V7_TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1666     dissect_v7_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1667     break;
1668   case V7_ERROR_CODE_PARAMETER_TAG:
1669     dissect_v7_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1670     break;
1671   case V7_STATUS_PARAMETER_TAG:
1672     dissect_v567_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1673     break;
1674   case V7_CONGESTION_INDICATION_PARAMETER_TAG:
1675     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1676     break;
1677   case V7_CONCERNED_DESTINATION_PARAMETER_TAG:
1678     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1679     break;
1680   case V7_ROUTING_KEY_PARAMETER_TAG:
1681     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1682     break;
1683   case V7_REGISTRATION_RESULT_PARAMETER_TAG:
1684     dissect_v67_registration_result_parameter(parameter_tvb, parameter_tree);
1685     break;
1686   case V7_DEREGISTRATION_RESULT_PARAMETER_TAG:
1687     dissect_v67_deregistration_result_parameter(parameter_tvb, parameter_tree);
1688     break;
1689   case V7_LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1690     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1691     break;
1692   case V7_DESTINATION_POINT_CODE_PARAMETER_TAG:
1693     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1694     break;
1695   case V7_SERVICE_INDICATORS_PARAMETER_TAG:
1696     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1697     break;
1698   case V7_SUBSYSTEM_NUMBERS_PARAMETER_TAG:
1699     dissect_subsystem_numbers_parameter(parameter_tvb, parameter_tree, parameter_item);
1700     break;
1701   case V7_ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1702     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1703     break;
1704   case V7_CIRCUIT_RANGE_PARAMETER_TAG:
1705     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1706     break;
1707   case V7_REGISTRATION_RESULTS_PARAMETER_TAG:
1708     dissect_registration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1709     break;
1710   case V7_DEREGISTRATION_RESULTS_PARAMETER_TAG:
1711     dissect_deregistration_results_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1712     break;
1713   default:
1714     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1715     break;
1716   };
1717
1718   if (padding_length > 0)
1719     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_BIG_ENDIAN);
1720 }
1721
1722 #define INFO_STRING_PARAMETER_TAG                  0x0004
1723 #define ROUTING_CONTEXT_PARAMETER_TAG              0x0006
1724 #define DIAGNOSTIC_INFORMATION_PARAMETER_TAG       0x0007
1725 #define HEARTBEAT_DATA_PARAMETER_TAG               0x0009
1726 #define TRAFFIC_MODE_TYPE_PARAMETER_TAG            0x000b
1727 #define ERROR_CODE_PARAMETER_TAG                   0x000c
1728 #define STATUS_PARAMETER_TAG                       0x000d
1729 #define ASP_IDENTIFIER_PARAMETER_TAG               0x0011
1730 #define AFFECTED_POINT_CODE_PARAMETER_TAG          0x0012
1731 #define CORRELATION_IDENTIFIER_PARAMETER_TAG       0x0013
1732
1733 #define NETWORK_APPEARANCE_PARAMETER_TAG           0x0200
1734 #define USER_CAUSE_PARAMETER_TAG                   0x0204
1735 #define CONGESTION_INDICATIONS_PARAMETER_TAG       0x0205
1736 #define CONCERNED_DESTINATION_PARAMETER_TAG        0x0206
1737 #define ROUTING_KEY_PARAMETER_TAG                  0x0207
1738 #define REGISTRATION_RESULT_PARAMETER_TAG          0x0208
1739 #define DEREGISTRATION_RESULT_PARAMETER_TAG        0x0209
1740 #define LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG 0x020a
1741 #define DESTINATION_POINT_CODE_PARAMETER_TAG       0x020b
1742 #define SERVICE_INDICATORS_PARAMETER_TAG           0x020c
1743 #define ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG  0x020e
1744 #define CIRCUIT_RANGE_PARAMETER_TAG                0x020f
1745 #define PROTOCOL_DATA_PARAMETER_TAG                0x0210
1746 #define REGISTRATION_STATUS_PARAMETER_TAG          0x0212
1747 #define DEREGISTRATION_STATUS_PARAMETER_TAG        0x0213
1748
1749 static const value_string parameter_tag_values[] = {
1750   { INFO_STRING_PARAMETER_TAG,                  "Info string" } ,
1751   { ROUTING_CONTEXT_PARAMETER_TAG,              "Routing context" } ,
1752   { DIAGNOSTIC_INFORMATION_PARAMETER_TAG,       "Diagnostic Information" } ,
1753   { HEARTBEAT_DATA_PARAMETER_TAG,               "Heartbeat data" } ,
1754   { TRAFFIC_MODE_TYPE_PARAMETER_TAG,            "Traffic mode type" } ,
1755   { ERROR_CODE_PARAMETER_TAG,                   "Error code" } ,
1756   { STATUS_PARAMETER_TAG,                       "Status" } ,
1757   { ASP_IDENTIFIER_PARAMETER_TAG,               "ASP identifier" } ,
1758   { AFFECTED_POINT_CODE_PARAMETER_TAG,          "Affected point code" } ,
1759   { CORRELATION_IDENTIFIER_PARAMETER_TAG,       "Correlation identifier" } ,
1760   { NETWORK_APPEARANCE_PARAMETER_TAG,           "Network appearance" } ,
1761   { USER_CAUSE_PARAMETER_TAG,                   "User / cause" } ,
1762   { CONGESTION_INDICATIONS_PARAMETER_TAG,       "Congestion indications" } ,
1763   { CONCERNED_DESTINATION_PARAMETER_TAG,        "Concerned destination" } ,
1764   { ROUTING_KEY_PARAMETER_TAG,                  "Routing key" } ,
1765   { REGISTRATION_RESULT_PARAMETER_TAG,          "Registration result" } ,
1766   { DEREGISTRATION_RESULT_PARAMETER_TAG,        "Deregistration result" } ,
1767   { LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG, "Local routing key identifier" } ,
1768   { DESTINATION_POINT_CODE_PARAMETER_TAG,       "Destination point code" } ,
1769   { SERVICE_INDICATORS_PARAMETER_TAG,           "Service indicators" } ,
1770   { ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG,  "Originating point code list" } ,
1771   { CIRCUIT_RANGE_PARAMETER_TAG,                "Circuit range" } ,
1772   { PROTOCOL_DATA_PARAMETER_TAG,                "Protocol data" } ,
1773   { REGISTRATION_STATUS_PARAMETER_TAG,          "Registration status" } ,
1774   { DEREGISTRATION_STATUS_PARAMETER_TAG,        "Deregistration status" } ,
1775   { 0,                           NULL } };
1776
1777 static void
1778 dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1779 {
1780   guint16 tag, length, padding_length;
1781   proto_item *parameter_item;
1782   proto_tree *parameter_tree;
1783
1784   /* extract tag and length from the parameter */
1785   tag            = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
1786   length         = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
1787   padding_length = tvb_length(parameter_tvb) - length;
1788
1789
1790   if (!tree && tag != PROTOCOL_DATA_PARAMETER_TAG)
1791     return;    /* Nothing to do here */
1792
1793   /* create proto_tree stuff */
1794   parameter_item   = proto_tree_add_text(m3ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s", val_to_str(tag, parameter_tag_values, "Unknown parameter"));
1795   parameter_tree   = proto_item_add_subtree(parameter_item, ett_parameter);
1796
1797   /* add tag and length to the parameter tree */
1798   proto_tree_add_item(parameter_tree, hf_parameter_tag,    parameter_tvb, PARAMETER_TAG_OFFSET,    PARAMETER_TAG_LENGTH,    ENC_BIG_ENDIAN);
1799   proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
1800
1801   switch(tag) {
1802   case INFO_STRING_PARAMETER_TAG:
1803     dissect_info_string_parameter(parameter_tvb, parameter_tree, parameter_item);
1804     break;
1805   case ROUTING_CONTEXT_PARAMETER_TAG:
1806     dissect_routing_context_parameter(parameter_tvb, parameter_tree, parameter_item);
1807     break;
1808   case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
1809     dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
1810     break;
1811   case HEARTBEAT_DATA_PARAMETER_TAG:
1812     dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
1813     break;
1814   case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
1815     dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
1816     break;
1817   case ERROR_CODE_PARAMETER_TAG:
1818     dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1819     break;
1820   case STATUS_PARAMETER_TAG:
1821     dissect_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1822     break;
1823   case ASP_IDENTIFIER_PARAMETER_TAG:
1824     dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1825     break;
1826   case AFFECTED_POINT_CODE_PARAMETER_TAG:
1827     dissect_affected_destinations_parameter(parameter_tvb, parameter_tree, parameter_item);
1828     break;
1829   case NETWORK_APPEARANCE_PARAMETER_TAG:
1830     dissect_network_appearance_parameter(parameter_tvb, parameter_tree, parameter_item);
1831     break;
1832   case USER_CAUSE_PARAMETER_TAG:
1833     dissect_user_cause_parameter(parameter_tvb, parameter_tree, parameter_item);
1834     break;
1835   case CONGESTION_INDICATIONS_PARAMETER_TAG:
1836     dissect_congestion_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
1837     break;
1838   case CONCERNED_DESTINATION_PARAMETER_TAG:
1839     dissect_concerned_destination_parameter(parameter_tvb, parameter_tree, parameter_item);
1840     break;
1841   case ROUTING_KEY_PARAMETER_TAG:
1842     dissect_routing_key_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1843     break;
1844   case REGISTRATION_RESULT_PARAMETER_TAG:
1845     dissect_registration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1846     break;
1847   case DEREGISTRATION_RESULT_PARAMETER_TAG:
1848     dissect_deregistration_result_parameter(parameter_tvb, pinfo, tree, parameter_tree);
1849     break;
1850   case LOCAL_ROUTING_KEY_IDENTIFIER_PARAMETER_TAG:
1851     dissect_local_routing_key_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1852     break;
1853   case DESTINATION_POINT_CODE_PARAMETER_TAG:
1854     dissect_destination_point_code_parameter(parameter_tvb, parameter_tree, parameter_item);
1855     break;
1856   case SERVICE_INDICATORS_PARAMETER_TAG:
1857     dissect_service_indicators_parameter(parameter_tvb, parameter_tree, parameter_item);
1858     break;
1859   case ORIGINATING_POINT_CODE_LIST_PARAMETER_TAG:
1860     dissect_originating_point_code_list_parameter(parameter_tvb, parameter_tree, parameter_item);
1861     break;
1862   case CIRCUIT_RANGE_PARAMETER_TAG:
1863     dissect_circuit_range_parameter(parameter_tvb, parameter_tree, parameter_item);
1864     break;
1865   case PROTOCOL_DATA_PARAMETER_TAG:
1866     dissect_protocol_data_parameter(parameter_tvb, pinfo, tree, parameter_tree, parameter_item);
1867     break;
1868   case CORRELATION_IDENTIFIER_PARAMETER_TAG:
1869     dissect_correlation_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
1870     break;
1871   case REGISTRATION_STATUS_PARAMETER_TAG:
1872     dissect_registration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1873     break;
1874   case DEREGISTRATION_STATUS_PARAMETER_TAG:
1875     dissect_deregistration_status_parameter(parameter_tvb, parameter_tree, parameter_item);
1876     break;
1877   default:
1878     dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
1879     break;
1880   };
1881
1882   if (padding_length > 0)
1883     proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_BIG_ENDIAN);
1884 }
1885
1886 static void
1887 dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1888 {
1889   gint offset, length, total_length, remaining_length;
1890   tvbuff_t *parameter_tvb;
1891
1892   offset = 0;
1893   while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
1894     length       = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
1895     total_length = ADD_PADDING(length);
1896     if (remaining_length >= length)
1897       total_length = MIN(total_length, remaining_length);
1898     /* create a tvb for the parameter including the padding bytes */
1899     parameter_tvb    = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
1900     switch(version) {
1901       case M3UA_V5:
1902         dissect_v5_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1903         break;
1904       case M3UA_V6:
1905         dissect_v6_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1906         break;
1907       case M3UA_V7:
1908         dissect_v7_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1909         break;
1910       case M3UA_RFC:
1911         dissect_parameter(parameter_tvb, pinfo, tree, m3ua_tree);
1912         break;
1913     }
1914     /* get rid of the handled parameter */
1915     offset += total_length;
1916   }
1917 }
1918
1919
1920 static void
1921 dissect_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *m3ua_tree)
1922 {
1923   tvbuff_t *common_header_tvb, *parameters_tvb;
1924
1925   common_header_tvb = tvb_new_subset(message_tvb, 0, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
1926   parameters_tvb    = tvb_new_subset_remaining(message_tvb, COMMON_HEADER_LENGTH);
1927   if (version == M3UA_V5)
1928     dissect_v5_common_header(common_header_tvb, pinfo, m3ua_tree);
1929   else
1930     dissect_common_header(common_header_tvb, pinfo, m3ua_tree);
1931
1932   /*  Need to dissect (certain) parameters even when !tree, so subdissectors
1933    *  (e.g., MTP3) are always called.
1934    */
1935   dissect_parameters(parameters_tvb, pinfo, tree, m3ua_tree);
1936 }
1937
1938 static void
1939 dissect_m3ua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
1940 {
1941   proto_item *m3ua_item;
1942   proto_tree *m3ua_tree;
1943
1944
1945   /* make entry in the Protocol column on summary display */
1946   if (check_col(pinfo->cinfo, COL_PROTOCOL))
1947     switch(version) {
1948       case M3UA_V5:
1949         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 05)");
1950         break;
1951       case M3UA_V6:
1952         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 06)");
1953         break;
1954       case M3UA_V7:
1955         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (ID 07)");
1956         break;
1957       case M3UA_RFC:
1958         col_set_str(pinfo->cinfo, COL_PROTOCOL, "M3UA (RFC 3332)");
1959         break;
1960       };
1961
1962   /* In the interest of speed, if "tree" is NULL, don't do any work not
1963      necessary to generate protocol tree items. */
1964   if (tree) {
1965     /* create the m3ua protocol tree */
1966     m3ua_item = proto_tree_add_item(tree, proto_m3ua, message_tvb, 0, -1, ENC_NA);
1967     m3ua_tree = proto_item_add_subtree(m3ua_item, ett_m3ua);
1968   } else {
1969     m3ua_tree = NULL;
1970   };
1971
1972   /* dissect the message */
1973   dissect_message(message_tvb, pinfo, tree, m3ua_tree);
1974
1975 }
1976
1977 /* Register the protocol with Wireshark */
1978 void
1979 proto_register_m3ua(void)
1980 {
1981
1982   /* Setup list of header fields */
1983   static hf_register_info hf[] = {
1984     { &hf_version,                          { "Version",                      "m3ua.version",                               FT_UINT8,  BASE_DEC,  VALS(protocol_version_values),                0x0, NULL,                              HFILL } },
1985     { &hf_reserved,                         { "Reserved",                     "m3ua.reserved",                              FT_UINT8,  BASE_HEX,  NULL,                                         0x0, NULL,                              HFILL } },
1986     { &hf_v5_message_class,                 { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(v5_message_class_values),                0x0, NULL,                              HFILL } },
1987     { &hf_message_class,                    { "Message class",                "m3ua.message_class",                         FT_UINT8,  BASE_DEC,  VALS(message_class_values),                   0x0, NULL,                              HFILL } },
1988     { &hf_message_type,                     { "Message Type",                 "m3ua.message_type",                          FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
1989     { &hf_message_length,                   { "Message length",               "m3ua.message_length",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
1990     { &hf_v5_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v5_parameter_tag_values),                0x0, NULL,                              HFILL } },
1991     { &hf_v6_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v6_parameter_tag_values),                0x0, NULL,                              HFILL } },
1992     { &hf_v7_parameter_tag,                 { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(v7_parameter_tag_values),                0x0, NULL,                              HFILL } },
1993     { &hf_parameter_tag,                    { "Parameter Tag",                "m3ua.parameter_tag",                         FT_UINT16, BASE_DEC,  VALS(parameter_tag_values),                   0x0, NULL,                              HFILL } },
1994     { &hf_parameter_length,                 { "Parameter length",             "m3ua.parameter_length",                      FT_UINT16, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
1995     { &hf_parameter_value,                  { "Parameter value",              "m3ua.parameter_value",                       FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
1996     { &hf_parameter_padding,                { "Padding",                      "m3ua.parameter_padding",                     FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
1997     { &hf_parameter_trailer,                { "Trailer",                      "m3ua.paramter_trailer",                      FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
1998     { &hf_network_appearance,               { "Network appearance",           "m3ua.network_appearance",                    FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
1999     { &hf_info_string,                      { "Info string",                  "m3ua.info_string",                           FT_STRING, BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
2000     { &hf_routing_context,                  { "Routing context",              "m3ua.routing_context",                       FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2001     { &hf_diagnostic_information,           { "Diagnostic information",       "m3ua.diagnostic_information",                FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
2002     { &hf_heartbeat_data,                   { "Heartbeat data",               "m3ua.heartbeat_data",                        FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
2003     { &hf_v5_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v5_error_code_values),                   0x0, NULL,                              HFILL } },
2004     { &hf_v6_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v6_error_code_values),                   0x0, NULL,                              HFILL } },
2005     { &hf_v7_error_code,                    { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(v7_error_code_values),                   0x0, NULL,                              HFILL } },
2006     { &hf_error_code,                       { "Error code",                   "m3ua.error_code",                            FT_UINT32, BASE_DEC,  VALS(error_code_values),                      0x0, NULL,                              HFILL } },
2007     { &hf_status_type,                      { "Status type",                  "m3ua.status_type",                           FT_UINT16, BASE_DEC,  VALS(status_type_values),                     0x0, NULL,                              HFILL } },
2008     { &hf_status_info,                      { "Status info",                  "m3ua.status_info",                           FT_UINT16, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2009     { &hf_asp_identifier,                   { "ASP identifier",               "m3ua.asp_identifier",                        FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2010     { &hf_affected_point_code_mask,         { "Mask",                         "m3ua.affected_point_code_mask",              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2011     { &hf_affected_point_code_pc,           { "Affected point code",          "m3ua.affected_point_code_pc",                FT_UINT24, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2012     { &hf_cause,                            { "Unavailability cause",         "m3ua.unavailability_cause",                  FT_UINT16, BASE_DEC,  VALS(unavailability_cause_values),            0x0, NULL,                              HFILL } },
2013     { &hf_user,                             { "User Identity",                "m3ua.user_identity",                         FT_UINT16, BASE_DEC,  VALS(user_identity_values),                   0x0, NULL,                              HFILL } },
2014     { &hf_reason,                           { "Reason",                       "m3ua.reason",                                FT_UINT32, BASE_DEC,  VALS(reason_values),                          0x0, NULL,                              HFILL } },
2015     { &hf_v5_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v5_traffic_mode_type_values),            0x0, NULL,                              HFILL } },
2016     { &hf_v6_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v6_traffic_mode_type_values),            0x0, NULL,                              HFILL } },
2017     { &hf_v7_traffic_mode_type,             { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(v7_traffic_mode_type_values),            0x0, NULL,                              HFILL } },
2018     { &hf_traffic_mode_type,                { "Traffic mode Type",            "m3ua.traffic_mode_type",                     FT_UINT32, BASE_DEC,  VALS(traffic_mode_type_values),               0x0, NULL,                              HFILL } },
2019     { &hf_congestion_reserved,              { "Reserved",                     "m3ua.congestion_reserved",                   FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
2020     { &hf_congestion_level,                 { "Congestion level",             "m3ua.congestion_level",                      FT_UINT8,  BASE_DEC,  VALS(congestion_level_values),                0x0, NULL,                              HFILL } },
2021     { &hf_concerned_dest_reserved,          { "Reserved",                     "m3ua.concerned_reserved",                    FT_BYTES,  BASE_NONE, NULL,                                         0x0, NULL,                              HFILL } },
2022     { &hf_concerned_dest_pc,                { "Concerned DPC",                "m3ua.concerned_dpc",                         FT_UINT24, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2023     { &hf_local_rk_identifier,              { "Local routing key identifier", "m3ua.local_rk_identifier",                   FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2024     { &hf_dpc_mask,                         { "Mask",                         "m3ua.dpc_mask",                              FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2025     { &hf_dpc_pc,                           { "Destination point code",       "m3ua.dpc_pc",                                FT_UINT24, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2026     { &hf_si,                               { "Service indicator",            "m3ua.si",                                    FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                   0x0, NULL,                              HFILL } },
2027     { &hf_ssn,                              { "Subsystem number",             "m3ua.ssn",                                   FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2028     { &hf_opc_list_mask,                    { "Mask",                         "m3ua.opc_list_mask",                         FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2029     { &hf_opc_list_pc,                      { "Originating point code",       "m3ua.opc_list_pc",                           FT_UINT24, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2030     { &hf_cic_range_mask,                   { "Mask",                         "m3ua.cic_range_mask",                        FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2031     { &hf_cic_range_pc,                     { "Originating point code",       "m3ua.cic_range_pc",                          FT_UINT24, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2032     { &hf_cic_range_lower,                  { "Lower CIC value",              "m3ua.cic_range_lower",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2033     { &hf_cic_range_upper,                  { "Upper CIC value",              "m3ua.cic_range_upper",                       FT_UINT16, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2034     { &hf_li,                               { "Length indicator",             "m3ua.protocol_data_2_li",                    FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2035     { &hf_protocol_data_opc,                { "OPC",                          "m3ua.protocol_data_opc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "Originating Point Code",          HFILL } },
2036     { &hf_protocol_data_dpc,                { "DPC",                          "m3ua.protocol_data_dpc",                     FT_UINT32, BASE_DEC,  NULL,                                         0x0, "Destination Point Code",          HFILL } },
2037     { &hf_protocol_data_mtp3_opc,           { "OPC",                          "mtp3.opc",                                   FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2038     { &hf_protocol_data_mtp3_dpc,           { "DPC",                          "mtp3.dpc",                                   FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2039     { &hf_protocol_data_mtp3_pc,            { "PC",                           "mtp3.pc",                                    FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2040     { &hf_protocol_data_si,                 { "SI",                           "m3ua.protocol_data_si",                      FT_UINT8,  BASE_DEC,  VALS(user_identity_values),                   0x0, "Service Indicator",               HFILL } },
2041     { &hf_protocol_data_ni,                 { "NI",                           "m3ua.protocol_data_ni",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "Network Indicator",               HFILL } },
2042     { &hf_protocol_data_mtp3_ni,            { "NI",                           "mtp3.ni",                                    FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2043     { &hf_protocol_data_mp,                 { "MP",                           "m3ua.protocol_data_mp",                      FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "Message Priority",                HFILL } },
2044     { &hf_protocol_data_sls,                { "SLS",                          "m3ua.protocol_data_sls",                     FT_UINT8,  BASE_DEC,  NULL,                                         0x0, "Signalling Link Selection",       HFILL } },
2045     { &hf_protocol_data_mtp3_sls,           { "SLS",                          "mtp3.sls",                                   FT_UINT8,  BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2046     { &hf_correlation_identifier,           { "Correlation Identifier",       "m3ua.correlation_identifier",                FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2047     { &hf_registration_status,              { "Registration status",          "m3ua.registration_status",                   FT_UINT32, BASE_DEC,  VALS(registration_status_values),             0x0, NULL,                              HFILL } },
2048     { &hf_deregistration_status,            { "Deregistration status",        "m3ua.deregistration_status",                 FT_UINT32, BASE_DEC,  VALS(deregistration_status_values),           0x0, NULL,                              HFILL } },
2049     { &hf_registration_result_identifier,   { "Local RK-identifier value",    "m3ua.registration_result_identifier",        FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2050     { &hf_registration_result_status,       { "Registration status",          "m3ua.registration_results_status",           FT_UINT32, BASE_DEC,  VALS(registration_result_status_values),      0x0, NULL,                              HFILL } },
2051     { &hf_registration_result_context,      { "Routing context",              "m3ua.registration_result_routing_context",   FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2052     { &hf_v6_deregistration_result_status,  { "De-Registration status",       "m3ua.deregistration_results_status",         FT_UINT32, BASE_DEC,  VALS(v6_deregistration_result_status_values), 0x0, NULL,                              HFILL } },
2053     { &hf_v6_deregistration_result_context, { "Routing context",              "m3ua.deregistration_result_routing_context", FT_UINT32, BASE_DEC,  NULL,                                         0x0, NULL,                              HFILL } },
2054   };
2055
2056   /* Setup protocol subtree array */
2057   static gint *ett[] = {
2058     &ett_m3ua,
2059     &ett_parameter,
2060     &ett_mtp3_equiv,
2061     &ett_q708_opc,
2062     &ett_q708_dpc,
2063   };
2064
2065   static enum_val_t options[] = {
2066     { "draft-5", "Internet Draft version 5",        M3UA_V5  },
2067     { "draft-6", "Internet Draft version 6",        M3UA_V6  },
2068     { "draft-7", "Internet Draft version 7",        M3UA_V7  },
2069     { "rfc3332", "RFC 3332",                        M3UA_RFC },
2070     { NULL, NULL, 0 }
2071   };
2072
2073   /* Register the protocol name and description */
2074   proto_m3ua = proto_register_protocol("MTP 3 User Adaptation Layer", "M3UA",  "m3ua");
2075   register_dissector("m3ua", dissect_m3ua, proto_m3ua);
2076
2077   m3ua_module = prefs_register_protocol(proto_m3ua, NULL);
2078   prefs_register_enum_preference(m3ua_module, "version", "M3UA Version", "Version used by Wireshark", &version, options, FALSE);
2079
2080   /* Required function calls to register the header fields and subtrees used */
2081   proto_register_field_array(proto_m3ua, hf, array_length(hf));
2082   proto_register_subtree_array(ett, array_length(ett));
2083
2084   m3ua_tap = register_tap("m3ua");
2085
2086 }
2087
2088 void
2089 proto_reg_handoff_m3ua(void)
2090 {
2091   dissector_handle_t m3ua_handle;
2092
2093   /*
2094    * Get a handle for the MTP3 dissector.
2095    */
2096   mtp3_handle = find_dissector("mtp3");
2097   data_handle = find_dissector("data");
2098   m3ua_handle = find_dissector("m3ua");
2099   dissector_add("sctp.ppi",  M3UA_PAYLOAD_PROTOCOL_ID, m3ua_handle);
2100   dissector_add("sctp.port", SCTP_PORT_M3UA, m3ua_handle);
2101
2102   si_dissector_table = find_dissector_table("mtp3.service_indicator");
2103 }