packet-mtp3mg.c

   1 /* packet-mtp3mg.c
   2  * Routines for Message Transfer Part Level 3 Management and Test dissection
   3  *
   4  * It is (hopefully) compliant to:
   5  *   ANSI T1.111.4-1996
   6  *   ITU-T Q.704 7/1996
   7  *   ITU-T Q.707 7/1996 and ANSI T1.111.7-1996 (for SLT message formats)
   8  *   portions of ITU-T Q.2210 7/1996 (for XCO/XCA message formats)
   9  *   GF 001-9001 (Chinese ITU variant)
  10  *
  11  * Copyright 2003, Jeff Morriss <jeff.morriss[AT]ulticom.com>
  12  *
  13  * $Id: packet-mtp3mg.c,v 1.12 2004/02/02 17:57:20 guy Exp $
  14  *
  15  * Ethereal - Network traffic analyzer
  16  * By Gerald Combs <gerald@ethereal.com>
  17  * Copyright 1998 Gerald Combs
  18  *
  19  * Copied from packet-mtp3.c
  20  *
  21  * This program is free software; you can redistribute it and/or
  22  * modify it under the terms of the GNU General Public License
  23  * as published by the Free Software Foundation; either version 2
  24  * of the License, or (at your option) any later version.
  25  *
  26  * This program is distributed in the hope that it will be useful,
  27  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  28  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29  * GNU General Public License for more details.
  30  *
  31  * You should have received a copy of the GNU General Public License
  32  * along with this program; if not, write to the Free Software
  33  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  34  */
  35
  36 #ifdef HAVE_CONFIG_H
  37 # include "config.h"
  38 #endif
  39
  40 #include <glib.h>
  41
  42 #ifdef NEED_SNPRINTF_H
  43 #include "snprintf.h"
  44 #endif
  45
  46 #include <epan/packet.h>
  47 #include "prefs.h"
  48
  49 #include <packet-mtp3.h>
  50
  51 /* MTP3 Service Indicators used by this dissector */
  52 #define MTP3MG_SI 0
  53 #define MTP3MG_ITU_TEST_SI 1
  54 #define MTP3MG_ANSI_TEST_SI 2
  55
  56 #define H0H1_LENGTH 1
  57 #define H0_MASK     0x0f
  58 #define H1_MASK     0xf0
  59 #define H1_SHIFT    4
  60
  61 #define H0_CHM 0x01
  62 #define H0_ECM 0x02
  63 #define H0_FCM 0x03
  64 #define H0_TFM 0x04
  65 #define H0_RSM 0x05
  66 #define H0_MIM 0x06
  67 #define H0_TRM 0x07
  68 #define H0_DLM 0x08
  69 #define H0_UFC 0x0a
  70 static const value_string h0_message_type_values[] = {
  71   { H0_CHM, "Changeover and changeback messages" },
  72   { H0_ECM, "Emergency changeover messages" },
  73   { H0_FCM, "Transfer-controlled and signalling route set congestion messages" },
  74   { H0_TFM, "Transfer prohibited-allowed-restricted messages" },
  75   { H0_RSM, "Signalling-route-set-test messages" },
  76   { H0_MIM, "Management inhibit messages" },
  77   { H0_TRM, "Traffic restart messages" },
  78   { H0_DLM, "Signalling-data-link-connection messages" },
  79   { H0_UFC, "User part flow control messages" },
  80   { 0,      NULL } };
  81
  82 #define TEST_H0_SLT 0x1
  83 static const value_string test_h0_message_type_values[] = {
  84   { TEST_H0_SLT, "Test messages" },
  85   { 0,           NULL } };
  86
  87 #define CHM_H1_COO 0x01
  88 #define CHM_H1_COA 0x02
  89 #define CHM_H1_XCO 0x03
  90 #define CHM_H1_XCA 0x04
  91 #define CHM_H1_CBD 0x05
  92 #define CHM_H1_CBA 0x06
  93 static const value_string chm_h1_message_type_values[] = {
  94   { CHM_H1_COO, "Changeover-order signal" },
  95   { CHM_H1_COA, "Changeover-ack signal" },
  96   { CHM_H1_XCO, "Extended changeover-order signal" },
  97   { CHM_H1_XCA, "Extended changeover-ack signal" },
  98   { CHM_H1_CBD, "Changeback-declaration signal" },
  99   { CHM_H1_CBA, "Changeback-ack signal" },
 100   { 0,          NULL } };
 101
 102 /* Same as above but in acronym form (for the Info column) */
 103 static const value_string chm_h1_message_type_acro_values[] = {
 104   { CHM_H1_COO, "COO" },
 105   { CHM_H1_COA, "COA" },
 106   { CHM_H1_XCO, "XCO" },
 107   { CHM_H1_XCA, "XCA" },
 108   { CHM_H1_CBD, "CBD" },
 109   { CHM_H1_CBA, "CBA" },
 110   { 0,          NULL } };
 111
 112 #define ECM_H1_ECO 0x01
 113 #define ECM_H1_ECA 0x02
 114 static const value_string ecm_h1_message_type_values[] = {
 115   { ECM_H1_ECO, "Emergency-changeover-order signal" },
 116   { ECM_H1_ECA, "Emergency-changeover-ack signal" },
 117   { 0,          NULL } };
 118
 119 /* Same as above but in acronym form (for the Info column) */
 120 static const value_string ecm_h1_message_type_acro_values[] = {
 121   { ECM_H1_ECO, "ECO" },
 122   { ECM_H1_ECA, "ECA" },
 123   { 0,          NULL } };
 124
 125 #define FCM_H1_RCT 0x01
 126 #define FCM_H1_TFC 0x02
 127 static const value_string fcm_h1_message_type_values[] = {
 128   { FCM_H1_RCT, "Signalling-route-set-congestion-test signal" },
 129   { FCM_H1_TFC, "Transfer-controlled signal" },
 130   { 0,          NULL } };
 131
 132 /* Same as above but in acronym form (for the Info column) */
 133 static const value_string fcm_h1_message_type_acro_values[] = {
 134   { FCM_H1_RCT, "RCT" },
 135   { FCM_H1_TFC, "TFC" },
 136   { 0,          NULL } };
 137
 138 #define TFM_H1_TFP 0x01
 139 #define TFM_H1_TCP 0x02 /* ANSI only */
 140 #define TFM_H1_TFR 0x03
 141 #define TFM_H1_TCR 0x04 /* ANSI only */
 142 #define TFM_H1_TFA 0x05
 143 #define TFM_H1_TCA 0x06 /* ANSI only */
 144 static const value_string tfm_h1_message_type_values[] = {
 145   { TFM_H1_TFP, "Transfer-prohibited signal" },
 146   { TFM_H1_TCP, "Transfer-cluster-prohibited signal (ANSI only)" },
 147   { TFM_H1_TFR, "Transfer-restricted signal" },
 148   { TFM_H1_TCR, "Transfer-cluster-restricted signal (ANSI only)" },
 149   { TFM_H1_TFA, "Transfer-allowed signal" },
 150   { TFM_H1_TCA, "Transfer-cluster-allowed signal (ANSI only)" },
 151   { 0,          NULL } };
 152
 153 /* Same as above but in acronym form (for the Info column) */
 154 static const value_string tfm_h1_message_type_acro_values[] = {
 155   { TFM_H1_TFP, "TFP" },
 156   { TFM_H1_TCP, "TCP" },
 157   { TFM_H1_TFR, "TFR" },
 158   { TFM_H1_TCR, "TCR" },
 159   { TFM_H1_TFA, "TFA" },
 160   { TFM_H1_TCA, "TCA" },
 161   { 0,          NULL } };
 162
 163 #define RSM_H1_RST 0x01
 164 #define RSM_H1_RSR 0x02
 165 #define RSM_H1_RCP 0x03 /* ANSI only */
 166 #define RSM_H1_RCR 0x04 /* ANSI only */
 167 static const value_string rsm_h1_message_type_values[] = {
 168   { RSM_H1_RST, "Signalling-route-set-test prohibited signal" },
 169   { RSM_H1_RSR, "Signalling-route-set-test restricted signal" },
 170   { RSM_H1_RCP, "Signalling-route-set-test cluster-prohibited signal (ANSI only)" },
 171   { RSM_H1_RCR, "Signalling-route-set-test cluster-restricted signal (ANSI only)" },
 172   { 0,          NULL } };
 173
 174 /* Same as above but in acronym form (for the Info column) */
 175 static const value_string rsm_h1_message_type_acro_values[] = {
 176   { RSM_H1_RST, "RST" },
 177   { RSM_H1_RSR, "RSR" },
 178   { RSM_H1_RCP, "RCP" },
 179   { RSM_H1_RCR, "RCR" },
 180   { 0,          NULL } };
 181
 182 #define MIM_H1_LIN 0x01
 183 #define MIM_H1_LUN 0x02
 184 #define MIM_H1_LIA 0x03
 185 #define MIM_H1_LUA 0x04
 186 #define MIM_H1_LID 0x05
 187 #define MIM_H1_LFU 0x06
 188 #define MIM_H1_LLT 0x07 /* LLI in ANSI */
 189 #define MIM_H1_LRT 0x08 /* LRI in ANSI */
 190 static const value_string mim_h1_message_type_values[] = {
 191   { MIM_H1_LIN, "Link inhibit signal" },
 192   { MIM_H1_LUN, "Link uninhibit signal" },
 193   { MIM_H1_LIA, "Link inhibit ack signal" },
 194   { MIM_H1_LUA, "Link uninhibit ack signal" },
 195   { MIM_H1_LID, "Link inhibit denied signal" },
 196   { MIM_H1_LFU, "Link forced uninhibit signal" },
 197   { MIM_H1_LLT, "Link local inhibit test signal" },
 198   { MIM_H1_LRT, "Link remote inhibit test signal" },
 199   { 0,          NULL } };
 200
 201 /* Same as above but in acronym form (for the Info column) */
 202 static const value_string mim_h1_message_type_acro_values[] = {
 203   { MIM_H1_LIN, "LIN" },
 204   { MIM_H1_LUN, "LUN" },
 205   { MIM_H1_LIA, "LIA" },
 206   { MIM_H1_LUA, "LUA" },
 207   { MIM_H1_LID, "LID" },
 208   { MIM_H1_LFU, "LFU" },
 209   { MIM_H1_LLT, "LLT (LLI)" },
 210   { MIM_H1_LRT, "LRT (LRI)" },
 211   { 0,          NULL } };
 212
 213 #define TRM_H1_TRA 0x01
 214 #define TRM_H1_TRW 0x02 /* ANSI only */
 215 static const value_string trm_h1_message_type_values[] = {
 216   { TRM_H1_TRA, "Traffic-restart-allowed signal" },
 217   { TRM_H1_TRW, "Traffic-restart-waiting signal (ANSI only)" },
 218   { 0,          NULL } };
 219
 220 /* Same as above but in acronym form (for the Info column) */
 221 static const value_string trm_h1_message_type_acro_values[] = {
 222   { TRM_H1_TRA, "TRA" },
 223   { TRM_H1_TRW, "TRW" },
 224   { 0,          NULL } };
 225
 226 #define DLM_H1_DLC 0x01
 227 #define DLM_H1_CSS 0x02
 228 #define DLM_H1_CNS 0x03
 229 #define DLM_H1_CNP 0x04
 230 static const value_string dlm_h1_message_type_values[] = {
 231   { DLM_H1_DLC, "Signalling-data-link-connection-order signal" },
 232   { DLM_H1_CSS, "Connection-successful signal" },
 233   { DLM_H1_CNS, "Connection-not-successful signal" },
 234   { DLM_H1_CNP, "Connection-not-possible signal" },
 235   { 0,          NULL } };
 236
 237 /* Same as above but in acronym form (for the Info column) */
 238 static const value_string dlm_h1_message_type_acro_values[] = {
 239   { DLM_H1_DLC, "DLC" },
 240   { DLM_H1_CSS, "CSS" },
 241   { DLM_H1_CNS, "CNS" },
 242   { DLM_H1_CNP, "CNP" },
 243   { 0,          NULL } };
 244
 245 #define UFC_H1_UPU 0x01
 246 static const value_string ufc_h1_message_type_values[] = {
 247   { UFC_H1_UPU, "User part unavailable signal" },
 248   { 0,          NULL } };
 249
 250 /* Same as above but in acronym form (for the Info column) */
 251 static const value_string ufc_h1_message_type_acro_values[] = {
 252   { UFC_H1_UPU, "UPU" },
 253   { 0,          NULL } };
 254
 255 static const value_string upu_cause_values[] = {
 256   { 0x0, "Unknown" },
 257   { 0x1, "Unequipped remote user" },
 258   { 0x2, "Inaccessible remote user" },
 259   { 0,   NULL } };
 260
 261 #define TEST_H1_SLTM 0x1
 262 #define TEST_H1_SLTA 0x2
 263 static const value_string test_h1_message_type_values[] = {
 264   { TEST_H1_SLTM, "Signalling link test message" },
 265   { TEST_H1_SLTA, "Signalling link test acknowledgement message" },
 266   { 0,            NULL } };
 267
 268 /* Same as above but in acronym form (for the Info column) */
 269 static const value_string test_h1_message_type_acro_values[] = {
 270   { TEST_H1_SLTM, "SLTM" },
 271   { TEST_H1_SLTA, "SLTA" },
 272   { 0,            NULL } };
 273
 274 #define COO_LENGTH         2
 275 #define ANSI_COO_SLC_MASK  0x000f
 276 #define ANSI_COO_FSN_MASK  0x07f0
 277 #define ITU_COO_FSN_MASK   0x007f
 278 #define ANSI_XCO_LENGTH    4
 279 #define ANSI_XCO_SLC_MASK  0x0000000f
 280 #define ANSI_XCO_FSN_MASK  0x0ffffff0
 281 #define ITU_XCO_LENGTH     3
 282 #define ANSI_CBD_LENGTH    2
 283 #define ANSI_CBD_SLC_MASK  0x000f
 284 #define ANSI_CBD_CBC_MASK  0x0ff0
 285 #define ITU_CBD_LENGTH     1
 286
 287 #define ANSI_ECO_LENGTH   1
 288 #define ANSI_ECO_SLC_MASK 0x0f
 289
 290 #define ANSI_TFC_STATUS_LENGTH 1
 291 #define ANSI_TFC_STATUS_OFFSET ANSI_PC_LENGTH
 292 #define ANSI_TFC_STATUS_MASK   0x03
 293 #define ITU_TFC_STATUS_LENGTH  ITU_PC_LENGTH
 294 #define ITU_TFC_STATUS_MASK    0xc000
 295
 296 #define ANSI_MIM_LENGTH   1
 297 #define ANSI_MIM_SLC_MASK 0x0f
 298
 299 #define ANSI_DLC_LENGTH    3
 300 #define ANSI_DLC_SLC_MASK  0x0000f
 301 #define ANSI_DLC_LINK_MASK 0x3fff0
 302 #define ITU_DLC_LENGTH     2
 303 #define ITU_DLC_LINK_MASK  0x0fff
 304
 305 #define ANSI_UPU_USER_OFFSET ANSI_PC_LENGTH
 306 #define UPU_USER_LENGTH      1
 307 #define UPU_USER_MASK        0x0f
 308 #define UPU_CAUSE_MASK       0xf0
 309 #define ITU_UPU_USER_OFFSET  ITU_PC_LENGTH
 310
 311 #define TEST_LENGTH         1
 312 #define TEST_LENGTH_MASK    0xf0
 313 #define TEST_LENGTH_SHIFT   4
 314 #define TEST_PATTERN_OFFSET TEST_LENGTH
 315 #define ANSI_TEST_SLC_MASK  0x000f
 316
 317 /* This list is slightly different from that in packet-mtp3.c */
 318 static const value_string service_indicator_code_vals[] = {
 319         { 0x0,  "Spare" },
 320         { 0x1,  "Spare"},
 321         { 0x2,  "Spare" },
 322         { 0x3,  "SCCP" },
 323         { 0x4,  "TUP" },
 324         { 0x5,  "ISUP" },
 325         { 0x6,  "DUP (call and circuit related messages)" },
 326         { 0x7,  "DUP (facility registration and cancellation message)" },
 327         { 0x8,  "MTP testing user part" },
 328         { 0x9,  "Spare" },
 329         { 0xa,  "Spare" },
 330         { 0xb,  "Spare" },
 331         { 0xc,  "Spare" },
 332         { 0xd,  "Spare" },
 333         { 0xe,  "Spare" },
 334         { 0xf,  "Spare" },
 335         { 0,    NULL }
 336 };
 337
 338 /* Initialize the protocol and registered fields */
 339 static int proto_mtp3mg  = -1;
 340 static int hf_mtp3mg_h0 = -1;
 341 static int hf_mtp3mg_chm_h1 = -1;
 342 static int hf_mtp3mg_ecm_h1 = -1;
 343 static int hf_mtp3mg_fcm_h1 = -1;
 344 static int hf_mtp3mg_tfm_h1 = -1;
 345 static int hf_mtp3mg_rsm_h1 = -1;
 346 static int hf_mtp3mg_mim_h1 = -1;
 347 static int hf_mtp3mg_trm_h1 = -1;
 348 static int hf_mtp3mg_dlm_h1 = -1;
 349 static int hf_mtp3mg_ufc_h1 = -1;
 350 static int hf_mtp3mg_coo_ansi_slc = -1;
 351 static int hf_mtp3mg_coo_ansi_fsn = -1;
 352 static int hf_mtp3mg_coo_itu_fsn = -1;
 353 static int hf_mtp3mg_xco_ansi_slc = -1;
 354 static int hf_mtp3mg_xco_ansi_fsn = -1;
 355 static int hf_mtp3mg_xco_itu_fsn = -1;
 356 static int hf_mtp3mg_cbd_ansi_slc = -1;
 357 static int hf_mtp3mg_cbd_ansi_cbc = -1;
 358 static int hf_mtp3mg_cbd_itu_cbc = -1;
 359 static int hf_mtp3mg_eco_ansi_slc = -1;
 360 static int hf_mtp3mg_tfc_ansi_apc = -1;
 361 static int hf_mtp3mg_tfc_apc_member = -1;
 362 static int hf_mtp3mg_tfc_apc_cluster = -1;
 363 static int hf_mtp3mg_tfc_apc_network = -1;
 364 static int hf_mtp3mg_tfc_ansi_status = -1;
 365 static int hf_mtp3mg_tfc_itu_apc = -1;
 366 static int hf_mtp3mg_tfc_itu_status = -1;
 367 static int hf_mtp3mg_tfc_chinese_apc = -1;
 368 static int hf_mtp3mg_tfm_ansi_apc = -1;
 369 static int hf_mtp3mg_tfm_apc_member = -1;
 370 static int hf_mtp3mg_tfm_apc_cluster = -1;
 371 static int hf_mtp3mg_tfm_apc_network = -1;
 372 static int hf_mtp3mg_tfm_itu_apc = -1;
 373 static int hf_mtp3mg_tfm_chinese_apc = -1;
 374 static int hf_mtp3mg_rsm_ansi_apc = -1;
 375 static int hf_mtp3mg_rsm_apc_member = -1;
 376 static int hf_mtp3mg_rsm_apc_cluster = -1;
 377 static int hf_mtp3mg_rsm_apc_network = -1;
 378 static int hf_mtp3mg_rsm_itu_apc = -1;
 379 static int hf_mtp3mg_rsm_chinese_apc = -1;
 380 static int hf_mtp3mg_mim_ansi_slc = -1;
 381 static int hf_mtp3mg_dlc_ansi_slc = -1;
 382 static int hf_mtp3mg_dlc_ansi_link = -1;
 383 static int hf_mtp3mg_dlc_itu_link = -1;
 384 static int hf_mtp3mg_upu_ansi_apc = -1;
 385 static int hf_mtp3mg_upu_apc_member = -1;
 386 static int hf_mtp3mg_upu_apc_cluster = -1;
 387 static int hf_mtp3mg_upu_apc_network = -1;
 388 static int hf_mtp3mg_upu_itu_apc = -1;
 389 static int hf_mtp3mg_upu_chinese_apc = -1;
 390 static int hf_mtp3mg_upu_user = -1;
 391 static int hf_mtp3mg_upu_cause = -1;
 392 static int hf_mtp3test_h0 = -1;
 393 static int hf_mtp3mg_test_h1 = -1;
 394 static int hf_mtp3mg_test_ansi_slc = -1;
 395 static int hf_mtp3mg_test_length = -1;
 396
 397 /* Initialize the subtree pointers */
 398 static gint ett_mtp3mg = -1;
 399 static gint ett_mtp3mg_fcm_apc = -1;
 400 static gint ett_mtp3mg_tfm_apc = -1;
 401 static gint ett_mtp3mg_rsm_apc = -1;
 402 static gint ett_mtp3mg_upu_apc = -1;
 403
 404 static void
 405 dissect_mtp3mg_unknown_message(tvbuff_t *tvb, proto_tree *tree)
 406 {
 407     guint8 message_length;
 408
 409     message_length = tvb_length_remaining(tvb, 0);
 410     proto_tree_add_text(tree, tvb, 0, message_length,
 411                         "Unknown message (%u byte%s)", message_length,
 412                         plurality(message_length, "", "s"));
 413 }
 414
 415 static void
 416 dissect_mtp3mg_chm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 417                    guint8 h1)
 418 {
 419     if (check_col(pinfo->cinfo, COL_INFO))
 420         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 421                      val_to_str(h1, chm_h1_message_type_acro_values, "Unknown"));
 422
 423     switch (h1)
 424     {
 425     case CHM_H1_COO:
 426     case CHM_H1_COA:
 427         if (mtp3_standard == ANSI_STANDARD)
 428         {
 429             proto_tree_add_item(tree, hf_mtp3mg_coo_ansi_slc, tvb, 0,
 430                                 COO_LENGTH, TRUE);
 431             proto_tree_add_item(tree, hf_mtp3mg_coo_ansi_fsn, tvb, 0,
 432                                 COO_LENGTH, TRUE);
 433         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 434             proto_tree_add_item(tree, hf_mtp3mg_coo_itu_fsn, tvb, 0,
 435                                 COO_LENGTH, TRUE);
 436         }
 437         break;
 438
 439     case CHM_H1_XCO:
 440     case CHM_H1_XCA:
 441         if (mtp3_standard == ANSI_STANDARD)
 442         {
 443             proto_tree_add_item(tree, hf_mtp3mg_xco_ansi_slc, tvb, 0,
 444                                 ANSI_XCO_LENGTH, TRUE);
 445             proto_tree_add_item(tree, hf_mtp3mg_xco_ansi_fsn, tvb, 0,
 446                                 ANSI_XCO_LENGTH, TRUE);
 447         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 448             proto_tree_add_item(tree, hf_mtp3mg_xco_itu_fsn, tvb, 0,
 449                                 ITU_XCO_LENGTH, TRUE);
 450         }
 451         break;
 452
 453     case CHM_H1_CBD:
 454     case CHM_H1_CBA:
 455         if (mtp3_standard == ANSI_STANDARD)
 456         {
 457             proto_tree_add_item(tree, hf_mtp3mg_cbd_ansi_slc, tvb, 0,
 458                                 ANSI_CBD_LENGTH, TRUE);
 459             proto_tree_add_item(tree, hf_mtp3mg_cbd_ansi_cbc, tvb, 0,
 460                                 ANSI_CBD_LENGTH, TRUE);
 461         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 462             proto_tree_add_item(tree, hf_mtp3mg_cbd_itu_cbc, tvb, 0,
 463                                 ITU_CBD_LENGTH, TRUE);
 464         }
 465         break;
 466
 467     default:
 468         dissect_mtp3mg_unknown_message(tvb, tree);
 469   }
 470 }
 471
 472 static void
 473 dissect_mtp3mg_ecm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 474                    guint8 h1)
 475 {
 476     if (check_col(pinfo->cinfo, COL_INFO))
 477         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 478                      val_to_str(h1, ecm_h1_message_type_acro_values, "Unknown"));
 479
 480     switch (h1)
 481     {
 482     case ECM_H1_ECO:
 483     case ECM_H1_ECA:
 484         if (mtp3_standard == ANSI_STANDARD)
 485         {
 486             proto_tree_add_item(tree, hf_mtp3mg_eco_ansi_slc, tvb, 0,
 487                                 ANSI_ECO_LENGTH, TRUE);
 488         }
 489         /* else: nothing to dissect */
 490         break;
 491
 492     default:
 493         dissect_mtp3mg_unknown_message(tvb, tree);
 494     }
 495 }
 496
 497 static void
 498 dissect_mtp3mg_3byte_pc(tvbuff_t *tvb, proto_tree *tree, gint *ett_pc,
 499                         int *hf_pc, int *hf_pc_member, int *hf_pc_cluster,
 500                         int *hf_pc_network)
 501 {
 502     guint32 apc;
 503     proto_item *apc_item;
 504     proto_tree *apc_tree;
 505     char pc[ANSI_PC_STRING_LENGTH];
 506
 507     apc = tvb_get_ntoh24(tvb, 0);
 508
 509     snprintf(pc, sizeof(pc), "%d-%d-%d",
 510              (apc & ANSI_NETWORK_MASK),
 511              ((apc & ANSI_CLUSTER_MASK) >> 8),
 512              ((apc & ANSI_MEMBER_MASK) >> 16));
 513
 514     apc_item = proto_tree_add_string_format(tree, *hf_pc, tvb, 0,
 515                                             ANSI_PC_LENGTH, pc,
 516                                             "Affected PC (%s)", pc);
 517
 518     apc_tree = proto_item_add_subtree(apc_item, *ett_pc);
 519
 520     proto_tree_add_uint(apc_tree, *hf_pc_member, tvb,
 521                         ANSI_MEMBER_OFFSET, ANSI_NCM_LENGTH, apc);
 522     proto_tree_add_uint(apc_tree, *hf_pc_cluster, tvb,
 523                         ANSI_CLUSTER_OFFSET, ANSI_NCM_LENGTH, apc);
 524     proto_tree_add_uint(apc_tree, *hf_pc_network, tvb,
 525                         ANSI_NETWORK_OFFSET, ANSI_NCM_LENGTH, apc);
 526
 527 }
 528
 529 static void
 530 dissect_mtp3mg_fcm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 531                    guint8 h1)
 532 {
 533     if (check_col(pinfo->cinfo, COL_INFO))
 534         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 535                      val_to_str(h1, fcm_h1_message_type_acro_values, "Unknown"));
 536
 537     switch (h1)
 538     {
 539     case FCM_H1_RCT:
 540         /* nothing to dissect */
 541         break;
 542
 543     case FCM_H1_TFC:
 544         if (mtp3_standard == ITU_STANDARD) {
 545
 546             proto_tree_add_item(tree, hf_mtp3mg_tfc_itu_apc, tvb, 0,
 547                                 ITU_PC_LENGTH, TRUE);
 548
 549             /* Congestion level is a national option */
 550             proto_tree_add_item(tree, hf_mtp3mg_tfc_itu_status, tvb, 0,
 551                                 ITU_TFC_STATUS_LENGTH, TRUE);
 552
 553
 554
 555         } else /* ANSI_STANDARD and CHINESE_ITU_STANDARD */ {
 556
 557             int *hf_apc_string;
 558
 559             if (mtp3_standard == ANSI_STANDARD) {
 560
 561                 hf_apc_string = &hf_mtp3mg_tfc_ansi_apc;
 562
 563             } else /* CHINESE_ITU_STANDARD */ {
 564
 565                 hf_apc_string = &hf_mtp3mg_tfc_chinese_apc;
 566             }
 567
 568             dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_fcm_apc,
 569                                     hf_apc_string,
 570                                     &hf_mtp3mg_tfc_apc_member,
 571                                     &hf_mtp3mg_tfc_apc_cluster,
 572                                     &hf_mtp3mg_tfc_apc_network);
 573
 574             proto_tree_add_item(tree, hf_mtp3mg_tfc_ansi_status, tvb,
 575                                 ANSI_TFC_STATUS_OFFSET, ANSI_TFC_STATUS_LENGTH,
 576                                 TRUE);
 577
 578         }
 579         break;
 580
 581     default:
 582         dissect_mtp3mg_unknown_message(tvb, tree);
 583     }
 584 }
 585
 586 static void
 587 dissect_mtp3mg_tfm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 588                    guint8 h1)
 589 {
 590     if (check_col(pinfo->cinfo, COL_INFO))
 591         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 592                      val_to_str(h1, tfm_h1_message_type_acro_values, "Unknown"));
 593
 594     switch (h1)
 595     {
 596     case TFM_H1_TFP:
 597     case TFM_H1_TCP:
 598     case TFM_H1_TFR:
 599     case TFM_H1_TCR:
 600     case TFM_H1_TFA:
 601     case TFM_H1_TCA:
 602         if (mtp3_standard == ANSI_STANDARD)
 603         {
 604             dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_tfm_apc,
 605                                     &hf_mtp3mg_tfm_ansi_apc,
 606                                     &hf_mtp3mg_tfm_apc_member,
 607                                     &hf_mtp3mg_tfm_apc_cluster,
 608                                     &hf_mtp3mg_tfm_apc_network);
 609
 610         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 611
 612             if (h1 == TFM_H1_TCP || h1 == TFM_H1_TCR || h1 == TFM_H1_TCA)
 613                 dissect_mtp3mg_unknown_message(tvb, tree);
 614             else if (mtp3_standard == ITU_STANDARD)
 615                 proto_tree_add_item(tree, hf_mtp3mg_tfm_itu_apc, tvb, 0,
 616                                     ITU_PC_LENGTH, TRUE);
 617             else /* CHINESE_ITU_STANDARD */
 618                 dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_tfm_apc,
 619                                         &hf_mtp3mg_tfm_chinese_apc,
 620                                         &hf_mtp3mg_tfm_apc_member,
 621                                         &hf_mtp3mg_tfm_apc_cluster,
 622                                         &hf_mtp3mg_tfm_apc_network);
 623         }
 624         break;
 625
 626     default:
 627         dissect_mtp3mg_unknown_message(tvb, tree);
 628     }
 629 }
 630
 631 static void
 632 dissect_mtp3mg_rsm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 633                    guint8 h1)
 634 {
 635     if (check_col(pinfo->cinfo, COL_INFO))
 636         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 637                      val_to_str(h1, rsm_h1_message_type_acro_values, "Unknown"));
 638
 639     switch (h1)
 640     {
 641     case RSM_H1_RST:
 642     case RSM_H1_RSR:
 643     case RSM_H1_RCP:
 644     case RSM_H1_RCR:
 645         if (mtp3_standard == ANSI_STANDARD)
 646         {
 647             dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_rsm_apc,
 648                                     &hf_mtp3mg_rsm_ansi_apc,
 649                                     &hf_mtp3mg_rsm_apc_member,
 650                                     &hf_mtp3mg_rsm_apc_cluster,
 651                                     &hf_mtp3mg_rsm_apc_network);
 652
 653         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 654
 655             if (h1 == RSM_H1_RST || h1 == RSM_H1_RSR)
 656             {
 657                 if (mtp3_standard == ITU_STANDARD)
 658                     proto_tree_add_item(tree, hf_mtp3mg_rsm_itu_apc, tvb, 0,
 659                                         ITU_PC_LENGTH, TRUE);
 660
 661                 else /* CHINESE_ITU_STANDARD */
 662                     dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_rsm_apc,
 663                                             &hf_mtp3mg_rsm_chinese_apc,
 664                                             &hf_mtp3mg_rsm_apc_member,
 665                                             &hf_mtp3mg_rsm_apc_cluster,
 666                                             &hf_mtp3mg_rsm_apc_network);
 667             } else
 668                 dissect_mtp3mg_unknown_message(tvb, tree);
 669         }
 670         break;
 671
 672     default:
 673         dissect_mtp3mg_unknown_message(tvb, tree);
 674     }
 675 }
 676
 677 static void
 678 dissect_mtp3mg_mim(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 679                    guint8 h1)
 680 {
 681     if (check_col(pinfo->cinfo, COL_INFO))
 682         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 683                      val_to_str(h1, mim_h1_message_type_acro_values, "Unknown"));
 684
 685     switch (h1)
 686     {
 687     case MIM_H1_LIN:
 688     case MIM_H1_LUN:
 689     case MIM_H1_LIA:
 690     case MIM_H1_LUA:
 691     case MIM_H1_LID:
 692     case MIM_H1_LFU:
 693     case MIM_H1_LLT:
 694     case MIM_H1_LRT:
 695         if (mtp3_standard == ANSI_STANDARD)
 696         {
 697             proto_tree_add_item(tree, hf_mtp3mg_mim_ansi_slc, tvb, 0,
 698                                 ANSI_MIM_LENGTH, TRUE);
 699         }
 700         /* else: nothing to dissect */
 701         break;
 702
 703     default:
 704         dissect_mtp3mg_unknown_message(tvb, tree);
 705     }
 706 }
 707
 708 static void
 709 dissect_mtp3mg_trm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 710                    guint8 h1)
 711 {
 712     if (check_col(pinfo->cinfo, COL_INFO))
 713         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 714                      val_to_str(h1, trm_h1_message_type_acro_values, "Unknown"));
 715
 716     switch (h1)
 717     {
 718     case TRM_H1_TRA:
 719         /* nothing to dissect */
 720         break;
 721     case TRM_H1_TRW:
 722         if (mtp3_standard != ANSI_STANDARD)
 723             dissect_mtp3mg_unknown_message(tvb, tree);
 724         /* else: nothing to dissect */
 725         break;
 726
 727     default:
 728         dissect_mtp3mg_unknown_message(tvb, tree);
 729     }
 730 }
 731
 732 static void
 733 dissect_mtp3mg_dlm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 734                    guint8 h1)
 735 {
 736     if (check_col(pinfo->cinfo, COL_INFO))
 737         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 738                      val_to_str(h1, dlm_h1_message_type_acro_values, "Unknown"));
 739
 740     switch (h1)
 741     {
 742     case DLM_H1_DLC:
 743         if (mtp3_standard == ANSI_STANDARD)
 744         {
 745             proto_tree_add_item(tree, hf_mtp3mg_dlc_ansi_slc, tvb, 0,
 746                                 ANSI_DLC_LENGTH, TRUE);
 747             proto_tree_add_item(tree, hf_mtp3mg_dlc_ansi_link, tvb, 0,
 748                                 ANSI_DLC_LENGTH, TRUE);
 749         } else /* ITU_STANDARD and CHINESE_ITU_STANDARD */ {
 750             proto_tree_add_item(tree, hf_mtp3mg_dlc_itu_link, tvb, 0,
 751                                 ITU_DLC_LENGTH, TRUE);
 752         }
 753         break;
 754     case DLM_H1_CSS:
 755     case DLM_H1_CNS:
 756     case DLM_H1_CNP:
 757         /* nothing to dissect */
 758         break;
 759
 760     default:
 761         dissect_mtp3mg_unknown_message(tvb, tree);
 762     }
 763 }
 764
 765 static void
 766 dissect_mtp3mg_ufc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 767                    guint8 h1)
 768 {
 769     if (check_col(pinfo->cinfo, COL_INFO))
 770         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 771                      val_to_str(h1, ufc_h1_message_type_acro_values, "Unknown"));
 772
 773     switch (h1)
 774     {
 775     case UFC_H1_UPU:
 776         if (mtp3_standard == ANSI_STANDARD
 777             || mtp3_standard == CHINESE_ITU_STANDARD)
 778         {
 779             int *hf_apc;
 780
 781             if (mtp3_standard == ANSI_STANDARD)
 782                 hf_apc = &hf_mtp3mg_upu_ansi_apc;
 783             else /* CHINESE_ITU_STANDARD */
 784                 hf_apc = &hf_mtp3mg_upu_chinese_apc;
 785
 786             dissect_mtp3mg_3byte_pc(tvb, tree, &ett_mtp3mg_upu_apc,
 787                                     hf_apc,
 788                                     &hf_mtp3mg_rsm_apc_member,
 789                                     &hf_mtp3mg_rsm_apc_cluster,
 790                                     &hf_mtp3mg_rsm_apc_network);
 791
 792             proto_tree_add_item(tree, hf_mtp3mg_upu_user, tvb,
 793                                 ANSI_UPU_USER_OFFSET, UPU_USER_LENGTH, TRUE);
 794             proto_tree_add_item(tree, hf_mtp3mg_upu_cause, tvb,
 795                                 ANSI_UPU_USER_OFFSET, UPU_USER_LENGTH, TRUE);
 796         } else /* ITU_STANDARD */ {
 797             proto_tree_add_item(tree, hf_mtp3mg_upu_itu_apc, tvb, 0,
 798                                 ITU_PC_LENGTH, TRUE);
 799             proto_tree_add_item(tree, hf_mtp3mg_upu_user, tvb,
 800                                 ITU_UPU_USER_OFFSET, UPU_USER_LENGTH, TRUE);
 801             proto_tree_add_item(tree, hf_mtp3mg_upu_cause, tvb,
 802                                 ITU_UPU_USER_OFFSET, UPU_USER_LENGTH, TRUE);
 803         }
 804         break;
 805
 806     default:
 807         dissect_mtp3mg_unknown_message(tvb, tree);
 808     }
 809 }
 810
 811 static void
 812 dissect_mtp3mg_test(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 813                    guint8 h1)
 814 {
 815     guint8 length;
 816
 817     if (check_col(pinfo->cinfo, COL_INFO))
 818         col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
 819                      val_to_str(h1, test_h1_message_type_acro_values, "Unknown"));
 820
 821     switch (h1)
 822     {
 823     case TEST_H1_SLTM:
 824     case TEST_H1_SLTA:
 825         if (mtp3_standard == ANSI_STANDARD)
 826         {
 827             proto_tree_add_item(tree, hf_mtp3mg_test_ansi_slc, tvb, 0,
 828                                 TEST_LENGTH, TRUE);
 829         }
 830
 831         proto_tree_add_item(tree, hf_mtp3mg_test_length, tvb, 0, TEST_LENGTH,
 832                             TRUE);
 833
 834         length = tvb_get_guint8(tvb, 0) >> TEST_LENGTH_SHIFT;
 835         proto_tree_add_text(tree, tvb, TEST_PATTERN_OFFSET, length,
 836                             "Test pattern (%u byte%s)", length,
 837                             plurality(length, "", "s"));
 838         break;
 839
 840     default:
 841         dissect_mtp3mg_unknown_message(tvb, tree);
 842     }
 843 }
 844
 845 static void
 846 dissect_mtp3mg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 847 {
 848
 849     guint8 h0, h1;
 850     tvbuff_t *payload_tvb;
 851
 852     /* Set up structures needed to add the protocol subtree and manage it */
 853     proto_item *mtp3mg_item = NULL;
 854     proto_tree *mtp3mg_tree = NULL;
 855
 856     /* Make entries in Protocol column on summary display */
 857     if (check_col(pinfo->cinfo, COL_PROTOCOL))
 858       switch(mtp3_standard) {
 859         case ITU_STANDARD:
 860           col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3MG (Int. ITU)");
 861           break;
 862         case ANSI_STANDARD:
 863           col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3MG (ANSI)");
 864           break;
 865         case CHINESE_ITU_STANDARD:
 866           col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3MG (Chin. ITU)");
 867           break;
 868       };
 869
 870     if (tree) {
 871         /* create display subtree for the protocol */
 872         mtp3mg_item = proto_tree_add_item(tree, proto_mtp3mg, tvb, 0, -1,
 873                                           TRUE);
 874         mtp3mg_tree = proto_item_add_subtree(mtp3mg_item, ett_mtp3mg);
 875     }
 876
 877     /*
 878      *  Dissect the message
 879      */
 880     if(pinfo->private_data == (void *)MTP3MG_ANSI_TEST_SI ||
 881        pinfo->private_data == (void *)MTP3MG_ITU_TEST_SI)
 882     {   /* Test messages */
 883
 884         proto_tree_add_item(mtp3mg_tree, hf_mtp3test_h0, tvb, 0, H0H1_LENGTH,
 885                             TRUE);
 886         /* H1 is added below */
 887
 888         h0 = tvb_get_guint8(tvb, 0) & H0_MASK;
 889         h1 = (tvb_get_guint8(tvb, 0) & H1_MASK) >> H1_SHIFT;
 890
 891         payload_tvb = tvb_new_subset(tvb, H0H1_LENGTH, -1, -1);
 892
 893         switch (h0)
 894         {
 895         case TEST_H0_SLT:
 896             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_test_h1, tvb, 0,
 897                                 H0H1_LENGTH, TRUE);
 898             dissect_mtp3mg_test(payload_tvb, pinfo, mtp3mg_tree, h1);
 899             break;
 900
 901         default:
 902             if (check_col(pinfo->cinfo, COL_INFO))
 903                 col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown ");
 904
 905             dissect_mtp3mg_unknown_message(tvb, mtp3mg_tree);
 906         } /* switch */
 907
 908     } else {    /* Real management messages */
 909
 910         proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_h0, tvb, 0, H0H1_LENGTH,
 911                             TRUE);
 912         /* H1 is added below */
 913
 914         h0 = tvb_get_guint8(tvb, 0) & H0_MASK;
 915         h1 = (tvb_get_guint8(tvb, 0) & H1_MASK) >> H1_SHIFT;
 916
 917         payload_tvb = tvb_new_subset(tvb, H0H1_LENGTH, -1, -1);
 918
 919         switch (h0)
 920         {
 921         case H0_CHM:
 922             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_chm_h1, tvb, 0,
 923                                 H0H1_LENGTH, TRUE);
 924             dissect_mtp3mg_chm(payload_tvb, pinfo, mtp3mg_tree, h1);
 925             break;
 926         case H0_ECM:
 927             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_ecm_h1, tvb, 0,
 928                                 H0H1_LENGTH, TRUE);
 929             dissect_mtp3mg_ecm(payload_tvb, pinfo, mtp3mg_tree, h1);
 930             break;
 931         case H0_FCM:
 932             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_fcm_h1, tvb, 0,
 933                                 H0H1_LENGTH, TRUE);
 934             dissect_mtp3mg_fcm(payload_tvb, pinfo, mtp3mg_tree, h1);
 935             break;
 936         case H0_TFM:
 937             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_tfm_h1, tvb, 0,
 938                                 H0H1_LENGTH, TRUE);
 939             dissect_mtp3mg_tfm(payload_tvb, pinfo, mtp3mg_tree, h1);
 940             break;
 941         case H0_RSM:
 942             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_rsm_h1, tvb, 0,
 943                                 H0H1_LENGTH, TRUE);
 944             dissect_mtp3mg_rsm(payload_tvb, pinfo, mtp3mg_tree, h1);
 945             break;
 946         case H0_MIM:
 947             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_mim_h1, tvb, 0,
 948                                 H0H1_LENGTH, TRUE);
 949             dissect_mtp3mg_mim(payload_tvb, pinfo, mtp3mg_tree, h1);
 950             break;
 951         case H0_TRM:
 952             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_trm_h1, tvb, 0,
 953                                 H0H1_LENGTH, TRUE);
 954             dissect_mtp3mg_trm(payload_tvb, pinfo, mtp3mg_tree, h1);
 955             break;
 956         case H0_DLM:
 957             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_dlm_h1, tvb, 0,
 958                                 H0H1_LENGTH, TRUE);
 959             dissect_mtp3mg_dlm(payload_tvb, pinfo, mtp3mg_tree, h1);
 960             break;
 961         case H0_UFC:
 962             proto_tree_add_item(mtp3mg_tree, hf_mtp3mg_ufc_h1, tvb, 0,
 963                                 H0H1_LENGTH, TRUE);
 964             dissect_mtp3mg_ufc(payload_tvb, pinfo, mtp3mg_tree, h1);
 965             break;
 966
 967         default:
 968             if (check_col(pinfo->cinfo, COL_INFO))
 969                 col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown ");
 970
 971             dissect_mtp3mg_unknown_message(tvb, mtp3mg_tree);
 972         } /* switch */
 973     } /* else */
 974
 975 }
 976
 977 void
 978 proto_register_mtp3mg(void)
 979 {
 980
 981     /* Setup list of header fields  See Section 1.6.1 for details*/
 982     static hf_register_info hf[] = {
 983         { &hf_mtp3mg_h0,
 984             { "H0 (Message Group)", "mtp3mg.h0",
 985               FT_UINT8, BASE_HEX, VALS(h0_message_type_values), H0_MASK,
 986               "Message group identifier", HFILL }},
 987         { &hf_mtp3mg_chm_h1,
 988             { "H1 (Message)", "mtp3mg.h1",
 989               FT_UINT8, BASE_HEX, VALS(chm_h1_message_type_values), H1_MASK,
 990               "Message type", HFILL }},
 991         { &hf_mtp3mg_ecm_h1,
 992             { "H1 (Message)", "mtp3mg.h1",
 993               FT_UINT8, BASE_HEX, VALS(ecm_h1_message_type_values), H1_MASK,
 994               "Message type", HFILL }},
 995         { &hf_mtp3mg_fcm_h1,
 996             { "H1 (Message)", "mtp3mg.h1",
 997               FT_UINT8, BASE_HEX, VALS(fcm_h1_message_type_values), H1_MASK,
 998               "Message type", HFILL }},
 999         { &hf_mtp3mg_tfm_h1,
1000             { "H1 (Message)", "mtp3mg.h1",
1001               FT_UINT8, BASE_HEX, VALS(tfm_h1_message_type_values), H1_MASK,
1002               "Message type", HFILL }},
1003         { &hf_mtp3mg_rsm_h1,
1004             { "H1 (Message)", "mtp3mg.h1",
1005               FT_UINT8, BASE_HEX, VALS(rsm_h1_message_type_values), H1_MASK,
1006               "Message type", HFILL }},
1007         { &hf_mtp3mg_mim_h1,
1008             { "H1 (Message)", "mtp3mg.h1",
1009               FT_UINT8, BASE_HEX, VALS(mim_h1_message_type_values), H1_MASK,
1010               "Message type", HFILL }},
1011         { &hf_mtp3mg_trm_h1,
1012             { "H1 (Message)", "mtp3mg.h1",
1013               FT_UINT8, BASE_HEX, VALS(trm_h1_message_type_values), H1_MASK,
1014               "Message type", HFILL }},
1015         { &hf_mtp3mg_dlm_h1,
1016             { "H1 (Message)", "mtp3mg.h1",
1017               FT_UINT8, BASE_HEX, VALS(dlm_h1_message_type_values), H1_MASK,
1018               "Message type", HFILL }},
1019         { &hf_mtp3mg_ufc_h1,
1020             { "H1 (Message)", "mtp3mg.h1",
1021               FT_UINT8, BASE_HEX, VALS(ufc_h1_message_type_values), H1_MASK,
1022               "Message type", HFILL }},
1023         { &hf_mtp3mg_coo_ansi_slc,
1024             { "Signalling Link Code", "mtp3mg.slc",
1025               FT_UINT8, BASE_DEC, NULL, ANSI_COO_SLC_MASK,
1026               "SLC of affected link", HFILL }},
1027         { &hf_mtp3mg_coo_ansi_fsn,
1028             { "Forward Sequence Number", "mtp3mg.fsn",
1029               FT_UINT8, BASE_DEC, NULL, ANSI_COO_FSN_MASK,
1030               "Forward Sequence Number of last accepted message", HFILL }},
1031         { &hf_mtp3mg_coo_itu_fsn,
1032             { "Forward Sequence Number", "mtp3mg.fsn",
1033               FT_UINT8, BASE_DEC, NULL, ITU_COO_FSN_MASK,
1034               "Forward Sequence Number of last accepted message", HFILL }},
1035         { &hf_mtp3mg_xco_ansi_slc,
1036             { "Signalling Link Code", "mtp3mg.slc",
1037               FT_UINT32, BASE_DEC, NULL, ANSI_XCO_SLC_MASK,
1038               "SLC of affected link", HFILL }},
1039         { &hf_mtp3mg_xco_ansi_fsn,
1040             { "Forward Sequence Number", "mtp3mg.fsn",
1041               FT_UINT32, BASE_DEC, NULL, ANSI_XCO_FSN_MASK,
1042               "Forward Sequence Number of last accepted message", HFILL }},
1043         { &hf_mtp3mg_xco_itu_fsn,
1044             { "Forward Sequence Number", "mtp3mg.fsn",
1045               FT_UINT24, BASE_DEC, NULL, 0x0,
1046               "Forward Sequence Number of last accepted message", HFILL }},
1047         { &hf_mtp3mg_cbd_ansi_slc,
1048             { "Signalling Link Code", "mtp3mg.slc",
1049               FT_UINT16, BASE_DEC, NULL, ANSI_CBD_SLC_MASK,
1050               "SLC of affected link", HFILL }},
1051         { &hf_mtp3mg_cbd_ansi_cbc,
1052             { "Change Back Code", "mtp3mg.cbc",
1053               FT_UINT16, BASE_DEC, NULL, ANSI_CBD_CBC_MASK,
1054               "", HFILL }},
1055         { &hf_mtp3mg_cbd_itu_cbc,
1056             { "Change Back Code", "mtp3mg.cbc",
1057               FT_UINT8, BASE_DEC, NULL, 0x0,
1058               "", HFILL }},
1059         { &hf_mtp3mg_eco_ansi_slc,
1060             { "Signalling Link Code", "mtp3mg.slc",
1061               FT_UINT8, BASE_DEC, NULL, ANSI_ECO_SLC_MASK,
1062               "SLC of affected link", HFILL }},
1063         { &hf_mtp3mg_tfc_ansi_apc,
1064             { "Affected Point Code", "mtp3mg.ansi_apc",
1065               FT_STRING, BASE_NONE, NULL, 0x0,
1066               "", HFILL }},
1067         { &hf_mtp3mg_tfc_apc_member,
1068             { "Affected Point Code member", "mtp3mg.apc.member",
1069               FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
1070               "", HFILL }},
1071         { &hf_mtp3mg_tfc_apc_cluster,
1072             { "Affected Point Code cluster", "mtp3mg.apc.cluster",
1073               FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
1074               "", HFILL }},
1075         { &hf_mtp3mg_tfc_apc_network,
1076             { "Affected Point Code network", "mtp3mg.apc.network",
1077               FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
1078               "", HFILL }},
1079         { &hf_mtp3mg_tfc_ansi_status,
1080             { "Status", "mtp3mg.status",
1081               FT_UINT8, BASE_DEC, NULL, ANSI_TFC_STATUS_MASK,
1082               "Congestion status", HFILL }},
1083         { &hf_mtp3mg_tfc_itu_apc,
1084             { "Affected Point Code (ITU)", "mtp3mg.apc",
1085               FT_UINT8, BASE_DEC, NULL, ITU_PC_MASK,
1086               "", HFILL }},
1087         { &hf_mtp3mg_tfc_itu_status,
1088             { "Status", "mtp3mg.status",
1089               FT_UINT8, BASE_DEC, NULL, ITU_TFC_STATUS_MASK,
1090               "Congestion status", HFILL }},
1091         { &hf_mtp3mg_tfc_chinese_apc,
1092             { "Affected Point Code", "mtp3mg.chinese_apc",
1093               FT_STRING, BASE_NONE, NULL, 0x0,
1094               "", HFILL }},
1095         { &hf_mtp3mg_tfm_ansi_apc,
1096             { "Affected Point Code", "mtp3mg.ansi_apc",
1097               FT_STRING, BASE_NONE, NULL, 0x0,
1098               "", HFILL }},
1099         { &hf_mtp3mg_tfm_apc_member,
1100             { "Affected Point Code member", "mtp3mg.apc.member",
1101               FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
1102               "", HFILL }},
1103         { &hf_mtp3mg_tfm_apc_cluster,
1104             { "Affected Point Code cluster", "mtp3mg.apc.cluster",
1105               FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
1106               "", HFILL }},
1107         { &hf_mtp3mg_tfm_apc_network,
1108             { "Affected Point Code network", "mtp3mg.apc.network",
1109               FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
1110               "", HFILL }},
1111         { &hf_mtp3mg_tfm_itu_apc,
1112             { "Affected Point Code (ITU)", "mtp3mg.apc",
1113               FT_UINT8, BASE_DEC, NULL, ITU_PC_MASK,
1114               "", HFILL }},
1115         { &hf_mtp3mg_tfm_chinese_apc,
1116             { "Affected Point Code", "mtp3mg.chinese_apc",
1117               FT_STRING, BASE_NONE, NULL, 0x0,
1118               "", HFILL }},
1119         { &hf_mtp3mg_rsm_ansi_apc,
1120             { "Affected Point Code", "mtp3mg.ansi_apc",
1121               FT_STRING, BASE_NONE, NULL, 0x0,
1122               "", HFILL }},
1123         { &hf_mtp3mg_rsm_apc_member,
1124             { "Affected Point Code member", "mtp3mg.apc.member",
1125               FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
1126               "", HFILL }},
1127         { &hf_mtp3mg_rsm_apc_cluster,
1128             { "Affected Point Code cluster", "mtp3mg.apc.cluster",
1129               FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
1130               "", HFILL }},
1131         { &hf_mtp3mg_rsm_apc_network,
1132             { "Affected Point Code network", "mtp3mg.apc.network",
1133               FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
1134               "", HFILL }},
1135         { &hf_mtp3mg_rsm_itu_apc,
1136             { "Affected Point Code (ITU)", "mtp3mg.apc",
1137               FT_UINT8, BASE_DEC, NULL, ITU_PC_MASK,
1138               "", HFILL }},
1139         { &hf_mtp3mg_rsm_chinese_apc,
1140             { "Affected Point Code", "mtp3mg.chinese_apc",
1141               FT_STRING, BASE_NONE, NULL, 0x0,
1142               "", HFILL }},
1143         { &hf_mtp3mg_mim_ansi_slc,
1144             { "Signalling Link Code", "mtp3mg.slc",
1145               FT_UINT8, BASE_DEC, NULL, ANSI_MIM_SLC_MASK,
1146               "SLC of affected link", HFILL }},
1147         { &hf_mtp3mg_dlc_ansi_slc,
1148             { "Signalling Link Code", "mtp3mg.slc",
1149               FT_UINT8, BASE_DEC, NULL, ANSI_DLC_SLC_MASK,
1150               "SLC of affected link", HFILL }},
1151         { &hf_mtp3mg_dlc_ansi_link,
1152             { "Link", "mtp3mg.link",
1153               FT_UINT8, BASE_DEC, NULL, ANSI_DLC_LINK_MASK,
1154               "CIC of BIC used to carry data", HFILL }},
1155         { &hf_mtp3mg_dlc_itu_link,
1156             { "Link", "mtp3mg.link",
1157               FT_UINT8, BASE_DEC, NULL, ITU_DLC_LINK_MASK,
1158               "CIC of BIC used to carry data", HFILL }},
1159         { &hf_mtp3mg_upu_ansi_apc,
1160             { "Affected Point Code", "mtp3mg.ansi_apc",
1161               FT_STRING, BASE_NONE, NULL, 0x0,
1162               "", HFILL }},
1163         { &hf_mtp3mg_upu_apc_member,
1164             { "Affected Point Code member", "mtp3mg.apc.member",
1165               FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
1166               "", HFILL }},
1167         { &hf_mtp3mg_upu_apc_cluster,
1168             { "Affected Point Code cluster", "mtp3mg.apc.cluster",
1169               FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
1170               "", HFILL }},
1171         { &hf_mtp3mg_upu_apc_network,
1172             { "Affected Point Code network", "mtp3mg.apc.network",
1173               FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
1174               "", HFILL }},
1175         { &hf_mtp3mg_upu_itu_apc,
1176             { "Affected Point Code", "mtp3mg.apc",
1177               FT_UINT8, BASE_DEC, NULL, ITU_PC_MASK,
1178               "", HFILL }},
1179         { &hf_mtp3mg_upu_chinese_apc,
1180             { "Affected Point Code", "mtp3mg.chinese_apc",
1181               FT_STRING, BASE_NONE, NULL, 0x0,
1182               "", HFILL }},
1183         { &hf_mtp3mg_upu_user,
1184             { "User", "mtp3mg.user",
1185               FT_UINT8, BASE_HEX, VALS(service_indicator_code_vals), UPU_USER_MASK,
1186               "Unavailable user part", HFILL }},
1187         { &hf_mtp3mg_upu_cause,
1188             { "Cause", "mtp3mg.cause",
1189               FT_UINT8, BASE_HEX, VALS(upu_cause_values), UPU_CAUSE_MASK,
1190               "Cause of user unavailability", HFILL }},
1191         { &hf_mtp3test_h0,
1192             { "H0 (Message Group)", "mtp3mg.test.h0",
1193               FT_UINT8, BASE_HEX, VALS(test_h0_message_type_values), H0_MASK,
1194               "Message group identifier", HFILL }},
1195         { &hf_mtp3mg_test_h1,
1196             { "H1 (Message)", "mtp3mg.test.h1",
1197               FT_UINT8, BASE_HEX, VALS(test_h1_message_type_values), H1_MASK,
1198               "SLT message type", HFILL }},
1199         { &hf_mtp3mg_test_length,
1200             { "Test length", "mtp3mg.test.length",
1201               FT_UINT8, BASE_DEC, NULL, H1_MASK,
1202               "Signalling link test pattern length", HFILL }},
1203         { &hf_mtp3mg_test_ansi_slc,
1204             { "Signalling Link Code", "mtp3mg.slc",
1205               FT_UINT8, BASE_DEC, NULL, ANSI_TEST_SLC_MASK,
1206               "SLC of affected link", HFILL }}
1207   };
1208
1209     /* Setup protocol subtree array */
1210     static gint *ett[] = {
1211         &ett_mtp3mg,
1212         &ett_mtp3mg_fcm_apc,
1213         &ett_mtp3mg_tfm_apc,
1214         &ett_mtp3mg_rsm_apc,
1215         &ett_mtp3mg_upu_apc
1216     };
1217
1218     /* Register the protocol name and description */
1219     proto_mtp3mg = proto_register_protocol("Message Transfer Part Level 3 Management",
1220                                            "MTP3MG", "mtp3mg");
1221     register_dissector("mtp3mg", dissect_mtp3mg, proto_mtp3mg);
1222
1223     /* Required calls to register the header fields and subtrees used */
1224     proto_register_field_array(proto_mtp3mg, hf, array_length(hf));
1225     proto_register_subtree_array(ett, array_length(ett));
1226
1227 }
1228
1229 void
1230 proto_reg_handoff_mtp3mg(void)
1231 {
1232     dissector_handle_t mtp3mg_handle;
1233
1234     mtp3mg_handle = create_dissector_handle(dissect_mtp3mg, proto_mtp3mg);
1235
1236     dissector_add("mtp3.service_indicator", MTP3MG_SI, mtp3mg_handle);
1237
1238     /*  SI 1 is unused in ANSI and SI 2 is unused in ITU, so it's okay for us
1239      *  to grab both (regardless of mtp3.standard setting) here.
1240      */
1241     dissector_add("mtp3.service_indicator", MTP3MG_ITU_TEST_SI, mtp3mg_handle);
1242     dissector_add("mtp3.service_indicator", MTP3MG_ANSI_TEST_SI, mtp3mg_handle);
1243 }
1244