packet-gtp.c

   1 /* packet-gtp.c
   2  *
   3  * Routines for GTP dissection
   4  * Copyright 2001, Michal Melerowicz <michal.melerowicz@nokia.com>
   5  *                 Nicolas Balkota <balkota@mac.com>
   6  *
   7  * $Id: packet-gtp.c,v 1.54 2003/04/29 17:56:47 guy Exp $
   8  *
   9  * Ethereal - Network traffic analyzer
  10  * By Gerald Combs <gerald@ethereal.com>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 #include <glib.h>
  37
  38 #include <epan/packet.h>
  39 #include "packet-gtp.h"
  40 #include "packet-ipv6.h"
  41 #include "packet-ppp.h"
  42 #include "prefs.h"
  43
  44 static dissector_table_t ppp_subdissector_table;
  45
  46 /*
  47  * All data related to GTP v0 (GPRS) uses "gtpv0" or "GTPv0",
  48  * all data related to GTP v1 (UMTS) uses "gtpv1" or "GTPv1",
  49  * if there is any gtp alone statement it means that this data is common
  50  * for both: GPRS and UMTS
  51  */
  52
  53 #define GTPv0_PORT 3386
  54 #define GTPv1C_PORT 2123                        /* 3G Control PDU */
  55 #define GTPv1U_PORT 2152                        /* 3G T-PDU */
  56
  57 #define GTPv0_HDR_LENGTH 20
  58 #define GTPv1_HDR_LENGTH 12
  59 #define GTP_PRIME_HDR_LENGTH 6
  60
  61 /* for function checking compliance with ETSI  */
  62 #define GTP_MANDATORY   1
  63 #define GTP_OPTIONAL    2
  64 #define GTP_CONDITIONAL 4
  65
  66 static int g_gtpv0_port                 = GTPv0_PORT;
  67 static int g_gtpv1c_port                = GTPv1C_PORT;
  68 static int g_gtpv1u_port                = GTPv1U_PORT;
  69
  70 void proto_reg_handoff_gtp(void);
  71
  72 static int proto_gtp                    = -1;
  73 static int proto_gtpv0                  = -1;
  74 static int proto_gtpv1                  = -1;
  75
  76 static int hf_gtpv0_flags                       = -1;
  77 static int hf_gtpv0_flags_ver           = -1;
  78 static int hf_gtpv0_flags_pt            = -1;
  79 static int hf_gtpv0_flags_spare         = -1;
  80 #ifdef GTP_UNUSED_HANDLES
  81 static int hf_gtpv0_flags_e             = -1;
  82 static int hf_gtpv0_flags_s             = -1;
  83 static int hf_gtpv0_flags_pn            = -1;
  84 #endif
  85 static int hf_gtpv0_flags_snn           = -1;
  86 static int hf_gtpv0_message_type                = -1;
  87 static int hf_gtpv0_length              = -1;
  88 static int hf_gtpv0_seq_number          = -1;
  89 static int hf_gtpv0_flow_label          = -1;
  90 static int hf_gtpv0_sndcp_number                = -1;
  91 #ifdef GTP_UNUSED_HANDLES
  92 static int hf_gtpv0_npdu_number         = -1;
  93 #endif
  94 static int hf_gtpv0_tid                 = -1;
  95 #ifdef GTP_UNUSED_HANDLES
  96 static int hf_gtpv0_teid                        = -1;
  97 static int hf_gtpv0_next                        = -1;
  98 #endif
  99 static int hf_gtpv0_cause                       = -1;
 100 static int hf_gtpv0_imsi                        = -1;
 101 static int hf_gtpv0_rai_mcc             = -1;
 102 static int hf_gtpv0_rai_mnc             = -1;
 103 static int hf_gtpv0_rai_rac             = -1;
 104 static int hf_gtpv0_rai_lac             = -1;
 105 static int hf_gtpv0_tlli                        = -1;
 106 static int hf_gtpv0_ptmsi                       = -1;
 107 static int hf_gtpv0_qos_spare1          = -1;
 108 static int hf_gtpv0_qos_delay           = -1;
 109 static int hf_gtpv0_qos_mean            = -1;
 110 static int hf_gtpv0_qos_peak            = -1;
 111 static int hf_gtpv0_qos_spare2          = -1;
 112 static int hf_gtpv0_qos_precedence      = -1;
 113 static int hf_gtpv0_qos_spare3          = -1;
 114 static int hf_gtpv0_qos_reliability     = -1;
 115 static int hf_gtpv0_reorder             = -1;
 116 static int hf_gtpv0_map_cause           = -1;
 117 static int hf_gtpv0_ptmsi_sig           = -1;
 118 static int hf_gtpv0_ms_valid            = -1;
 119 static int hf_gtpv0_recovery            = -1;
 120 static int hf_gtpv0_sel_mode            = -1;
 121 static int hf_gtpv0_ext_flow_label      = -1;
 122 #ifdef GTP_UNUSED_HANDLES
 123 static int hf_gtpv0_teid_data           = -1;   /* 3G */
 124 #endif
 125 static int hf_gtpv0_flow_sig            = -1;
 126 #ifdef GTP_UNUSED_HANDLES
 127 static int hf_gtpv0_teid_cp             = -1;   /* 3G */
 128 #endif
 129 static int hf_gtpv0_nsapi                       = -1;
 130 static int hf_gtpv0_flow_ii             = -1;
 131 #ifdef GTP_UNUSED_HANDLES
 132 static int hf_gtpv0_teid_ii             = -1;   /* 3G */
 133 #endif
 134 static int hf_gtpv0_ms_reason           = -1;
 135 #ifdef GTP_UNUSED_HANDLES
 136 static int hf_gtpv0_tear_ind            = -1;   /* 3G */
 137 static int hf_gtpv0_ranap_cause         = -1;   /* 3G */
 138 static int hf_gtpv0_rab_gtpu_dn         = -1;   /* 3G */
 139 static int hf_gtpv0_rab_gtpu_up         = -1;   /* 3G */
 140 static int hf_gtpv0_rab_pdu_dn          = -1;   /* 3G */
 141 static int hf_gtpv0_rab_pdu_up          = -1;   /* 3G */
 142 static int hf_gtpv0_rp_sms              = -1;   /* 3G */
 143 static int hf_gtpv0_rp_spare            = -1;   /* 3G */
 144 static int hf_gtpv0_rp_nsapi            = -1;   /* 3G */
 145 static int hf_gtpv0_rp                  = -1;   /* 3G */
 146 static int hf_gtpv0_pkt_flow_id         = -1;   /* 3G */
 147 static int hf_gtpv0_chrg_char_s         = -1;   /* 3G */
 148 static int hf_gtpv0_chrg_char_n         = -1;   /* 3G */
 149 static int hf_gtpv0_chrg_char_p         = -1;   /* 3G */
 150 static int hf_gtpv0_chrg_char_f         = -1;   /* 3G */
 151 static int hf_gtpv0_chrg_char_h         = -1;   /* 3G */
 152 static int hf_gtpv0_chrg_char_r         = -1;   /* 3G */
 153 static int hf_gtpv0_trace_ref           = -1;   /* 3G */
 154 static int hf_gtpv0_trace_type          = -1;   /* 3G */
 155 #endif
 156 static int hf_gtpv0_tr_comm             = -1;   /* charging */
 157 static int hf_gtpv0_chrg_id             = -1;
 158 static int hf_gtpv0_user_ipv4           = -1;
 159 static int hf_gtpv0_user_ipv6           = -1;
 160 static int hf_gtpv0_user_addr_pdp_org   = -1;
 161 static int hf_gtpv0_user_addr_pdp_type  = -1;
 162 static int hf_gtpv0_apn                 = -1;
 163 static int hf_gtpv0_gsn_ipv4            = -1;
 164 static int hf_gtpv0_gsn_ipv6            = -1;
 165 static int hf_gtpv0_gsn_addr_type               = -1;
 166 static int hf_gtpv0_gsn_addr_len                = -1;
 167 static int hf_gtpv0_msisdn              = -1;
 168 #ifdef GTP_UNUSED_HANDLES
 169 static int hf_gtpv0_qos_al_ret_priority = -1;
 170 static int hf_gtpv0_qos_traf_class      = -1;
 171 static int hf_gtpv0_qos_del_order               = -1;
 172 static int hf_gtpv0_qos_del_err_sdu     = -1;
 173 static int hf_gtpv0_qos_max_sdu_size    = -1;
 174 static int hf_gtpv0_qos_max_ul          = -1;
 175 static int hf_gtpv0_qos_max_dl          = -1;
 176 static int hf_gtpv0_qos_res_ber         = -1;
 177 static int hf_gtpv0_qos_sdu_err_ratio   = -1;
 178 static int hf_gtpv0_qos_trans_delay     = -1;
 179 static int hf_gtpv0_qos_traf_handl_prio = -1;
 180 static int hf_gtpv0_qos_guar_ul         = -1;
 181 static int hf_gtpv0_qos_guar_dl         = -1;
 182 static int hf_gtpv0_rnc_ipv4            = -1;
 183 static int hf_gtpv0_rnc_ipv6            = -1;
 184 #endif
 185 static int hf_gtpv0_chrg_ipv4           = -1;
 186 static int hf_gtpv0_chrg_ipv6           = -1;
 187 static int hf_gtpv0_node_ipv4           = -1;
 188 static int hf_gtpv0_node_ipv6           = -1;
 189 static int hf_gtpv0_ext_id              = -1;
 190 static int hf_gtpv0_ext_val             = -1;
 191 static int hf_gtpv0_unknown             = -1;
 192
 193 static int hf_gtpv1_flags                       = -1;
 194 static int hf_gtpv1_flags_ver           = -1;
 195 static int hf_gtpv1_flags_pt            = -1;
 196 static int hf_gtpv1_flags_spare         = -1;
 197 static int hf_gtpv1_flags_e             = -1;
 198 static int hf_gtpv1_flags_s             = -1;
 199 static int hf_gtpv1_flags_pn            = -1;
 200 #ifdef GTP_UNUSED_HANDLES
 201 static int hf_gtpv1_flags_snn           = -1;
 202 #endif
 203 static int hf_gtpv1_message_type                = -1;
 204 static int hf_gtpv1_length              = -1;
 205 static int hf_gtpv1_seq_number          = -1;
 206 #ifdef GTP_UNUSED_HANDLES
 207 static int hf_gtpv1_flow_label          = -1;
 208 static int hf_gtpv1_sndcp_number                = -1;
 209 #endif
 210 static int hf_gtpv1_npdu_number         = -1;
 211 #ifdef GTP_UNUSED_HANDLES
 212 static int hf_gtpv1_tid                 = -1;
 213 #endif
 214 static int hf_gtpv1_teid                        = -1;
 215 static int hf_gtpv1_next                        = -1;
 216 static int hf_gtpv1_cause                       = -1;
 217 static int hf_gtpv1_imsi                        = -1;
 218 static int hf_gtpv1_rai_mcc             = -1;
 219 static int hf_gtpv1_rai_mnc             = -1;
 220 static int hf_gtpv1_rai_rac             = -1;
 221 static int hf_gtpv1_rai_lac             = -1;
 222 static int hf_gtpv1_tlli                        = -1;
 223 static int hf_gtpv1_ptmsi                       = -1;
 224 static int hf_gtpv1_qos_spare1          = -1;
 225 static int hf_gtpv1_qos_delay           = -1;
 226 static int hf_gtpv1_qos_mean            = -1;
 227 static int hf_gtpv1_qos_peak            = -1;
 228 static int hf_gtpv1_qos_spare2          = -1;
 229 static int hf_gtpv1_qos_precedence      = -1;
 230 static int hf_gtpv1_qos_spare3          = -1;
 231 static int hf_gtpv1_qos_reliability     = -1;
 232 static int hf_gtpv1_reorder             = -1;
 233 static int hf_gtpv1_map_cause           = -1;
 234 static int hf_gtpv1_ptmsi_sig           = -1;
 235 static int hf_gtpv1_ms_valid            = -1;
 236 static int hf_gtpv1_recovery            = -1;
 237 static int hf_gtpv1_sel_mode            = -1;
 238 #ifdef GTP_UNUSED_HANDLES
 239 static int hf_gtpv1_ext_flow_label      = -1;
 240 #endif
 241 static int hf_gtpv1_teid_data           = -1;   /* 3G */
 242 #ifdef GTP_UNUSED_HANDLES
 243 static int hf_gtpv1_flow_sig            = -1;
 244 #endif
 245 static int hf_gtpv1_teid_cp             = -1;   /* 3G */
 246 static int hf_gtpv1_nsapi                       = -1;
 247 #ifdef GTP_UNUSED_HANDLES
 248 static int hf_gtpv1_flow_ii             = -1;
 249 #endif
 250 static int hf_gtpv1_teid_ii             = -1;   /* 3G */
 251 static int hf_gtpv1_ms_reason           = -1;
 252 static int hf_gtpv1_tear_ind            = -1;   /* 3G */
 253 static int hf_gtpv1_ranap_cause         = -1;   /* 3G */
 254 static int hf_gtpv1_rab_gtpu_dn         = -1;   /* 3G */
 255 static int hf_gtpv1_rab_gtpu_up         = -1;   /* 3G */
 256 static int hf_gtpv1_rab_pdu_dn          = -1;   /* 3G */
 257 static int hf_gtpv1_rab_pdu_up          = -1;   /* 3G */
 258 static int hf_gtpv1_rp_sms              = -1;   /* 3G */
 259 static int hf_gtpv1_rp_spare            = -1;   /* 3G */
 260 static int hf_gtpv1_rp_nsapi            = -1;   /* 3G */
 261 static int hf_gtpv1_rp                  = -1;   /* 3G */
 262 static int hf_gtpv1_pkt_flow_id         = -1;   /* 3G */
 263 static int hf_gtpv1_chrg_char_s         = -1;   /* 3G */
 264 static int hf_gtpv1_chrg_char_n         = -1;   /* 3G */
 265 static int hf_gtpv1_chrg_char_p         = -1;   /* 3G */
 266 static int hf_gtpv1_chrg_char_f         = -1;   /* 3G */
 267 static int hf_gtpv1_chrg_char_h         = -1;   /* 3G */
 268 static int hf_gtpv1_chrg_char_r         = -1;   /* 3G */
 269 static int hf_gtpv1_trace_ref           = -1;   /* 3G */
 270 static int hf_gtpv1_trace_type          = -1;   /* 3G */
 271 static int hf_gtpv1_tr_comm             = -1;   /* charging */
 272 static int hf_gtpv1_chrg_id             = -1;
 273 static int hf_gtpv1_user_ipv4           = -1;
 274 static int hf_gtpv1_user_ipv6           = -1;
 275 static int hf_gtpv1_user_addr_pdp_org   = -1;
 276 static int hf_gtpv1_user_addr_pdp_type  = -1;
 277 static int hf_gtpv1_apn                 = -1;
 278 static int hf_gtpv1_gsn_ipv4            = -1;
 279 static int hf_gtpv1_gsn_ipv6            = -1;
 280 static int hf_gtpv1_gsn_addr_type               = -1;
 281 static int hf_gtpv1_gsn_addr_len                = -1;
 282 static int hf_gtpv1_msisdn              = -1;
 283 static int hf_gtpv1_qos_al_ret_priority = -1;
 284 static int hf_gtpv1_qos_traf_class      = -1;
 285 static int hf_gtpv1_qos_del_order               = -1;
 286 static int hf_gtpv1_qos_del_err_sdu     = -1;
 287 static int hf_gtpv1_qos_max_sdu_size    = -1;
 288 static int hf_gtpv1_qos_max_ul          = -1;
 289 static int hf_gtpv1_qos_max_dl          = -1;
 290 static int hf_gtpv1_qos_res_ber         = -1;
 291 static int hf_gtpv1_qos_sdu_err_ratio   = -1;
 292 static int hf_gtpv1_qos_trans_delay     = -1;
 293 static int hf_gtpv1_qos_traf_handl_prio = -1;
 294 static int hf_gtpv1_qos_guar_ul         = -1;
 295 static int hf_gtpv1_qos_guar_dl         = -1;
 296 static int hf_gtpv1_tft_code            = -1;
 297 static int hf_gtpv1_tft_spare           = -1;
 298 static int hf_gtpv1_tft_number          = -1;
 299 static int hf_gtpv1_tft_eval            = -1;
 300 static int hf_gtpv1_rnc_ipv4            = -1;
 301 static int hf_gtpv1_rnc_ipv6            = -1;
 302 static int hf_gtpv1_chrg_ipv4           = -1;
 303 static int hf_gtpv1_chrg_ipv6           = -1;
 304 static int hf_gtpv1_node_ipv4           = -1;
 305 static int hf_gtpv1_node_ipv6           = -1;
 306 static int hf_gtpv1_ext_id              = -1;
 307 static int hf_gtpv1_ext_val             = -1;
 308 static int hf_gtpv1_unknown             = -1;
 309
 310 /* Initialize the subtree pointers */
 311 static gint ett_gtp                     = -1;
 312 static gint ett_gtp_flags               = -1;
 313 static gint ett_gtp_ext                 = -1;
 314 static gint ett_gtp_rai                 = -1;
 315 static gint ett_gtp_qos                 = -1;
 316 static gint ett_gtp_auth_tri            = -1;
 317 static gint ett_gtp_flow_ii             = -1;
 318 static gint ett_gtp_rab_cntxt           = -1;
 319 static gint ett_gtp_rp                  = -1;
 320 static gint ett_gtp_pkt_flow_id         = -1;
 321 static gint ett_gtp_chrg_char           = -1;
 322 static gint ett_gtp_user                = -1;
 323 static gint ett_gtp_mm                  = -1;
 324 static gint ett_gtp_trip                = -1;
 325 static gint ett_gtp_quint               = -1;
 326 static gint ett_gtp_pdp                 = -1;
 327 static gint ett_gtp_apn                 = -1;
 328 static gint ett_gtp_proto               = -1;
 329 static gint ett_gtp_gsn_addr            = -1;
 330 static gint ett_gtp_tft                 = -1;
 331 static gint ett_gtp_tft_pf              = -1;
 332 static gint ett_gtp_tft_flags           = -1;
 333 static gint ett_gtp_rab_setup           = -1;
 334 static gint ett_gtp_hdr_list            = -1;
 335 static gint ett_gtp_chrg_addr           = -1;
 336 static gint ett_gtp_node_addr           = -1;
 337 static gint ett_gtp_rel_pack            = -1;
 338 static gint ett_gtp_can_pack            = -1;
 339 static gint ett_gtp_data_resp           = -1;
 340 static gint ett_gtp_priv_ext            = -1;
 341
 342 /* Definition of user preferences panel fields */
 343 #define DONT_DISSECT_CDRS       2
 344
 345 static gboolean gtp_tpdu                = TRUE;
 346 static gint     gtpv0_cdr_as            = DONT_DISSECT_CDRS;                    /* 2 = do not dissect */
 347 static gboolean gtpv0_etsi_order        = FALSE;
 348 static gboolean gtpv1_etsi_order        = FALSE;
 349 static int      gtpv0_port              = 0;
 350 static int      gtpv1c_port             = 0;
 351 static int      gtpv1u_port             = 0;
 352
 353 /* Definition of flags masks */
 354 #define GTP_VER_MASK 0xE0
 355
 356 static const value_string ver_types[] = {
 357         { 0, "GTP release 97/98 version" },
 358         { 1, "GTP release 99 version" },
 359         { 2, "None" },
 360         { 3, "None" },
 361         { 4, "None" },
 362         { 5, "None" },
 363         { 6, "None" },
 364         { 7, "None" },
 365         { 0, NULL }
 366 };
 367
 368 #define GTP_PT_MASK             0x10
 369 #define GTP_SPARE_MASK          0x0E
 370 #define GTPv1_SPARE_MASK                0x08
 371 #define GTPv1_E_MASK            0x04
 372 #define GTPv1_S_MASK            0x02
 373 #define GTP_SNN_MASK            0x01
 374 #define GTPv1_PN_MASK           0x01
 375
 376 /* Definition of 3G charging characteristics masks */
 377 #define GTP_MASK_CHRG_CHAR_S    0xF000
 378 #define GTP_MASK_CHRG_CHAR_N    0x0800
 379 #define GTP_MASK_CHRG_CHAR_P    0x0400
 380 #define GTP_MASK_CHRG_CHAR_F    0x0200
 381 #define GTP_MASK_CHRG_CHAR_H    0x0100
 382 #define GTP_MASK_CHRG_CHAR_R    0x00FF
 383
 384 /* Traffic Flow Templates  mask */
 385 #define GTPv1_TFT_CODE_MASK     0xE0
 386 #define GTPv1_TFT_SPARE_MASK    0x10
 387 #define GTPv1_TFT_NUMBER_MASK   0x0F
 388
 389 /* Definition of GSN Address masks */
 390 #define GTP_EXT_GSN_ADDR_TYPE_MASK              0xC0
 391 #define GTP_EXT_GSN_ADDR_LEN_MASK               0x3F
 392
 393 /* Definition of QoS masks */
 394 #define GTP_EXT_QOS_SPARE1_MASK                 0xC0
 395 #define GTP_EXT_QOS_DELAY_MASK                  0x38
 396 #define GTP_EXT_QOS_RELIABILITY_MASK            0x07
 397 #define GTP_EXT_QOS_PEAK_MASK                   0xF0
 398 #define GTP_EXT_QOS_SPARE2_MASK                 0x08
 399 #define GTP_EXT_QOS_PRECEDENCE_MASK             0x07
 400 #define GTP_EXT_QOS_SPARE3_MASK                 0xE0
 401 #define GTP_EXT_QOS_MEAN_MASK                   0x1F
 402 #define GTP_EXT_QOS_TRAF_CLASS_MASK             0xE0
 403 #define GTP_EXT_QOS_DEL_ORDER_MASK              0x18
 404 #define GTP_EXT_QOS_DEL_ERR_SDU_MASK            0x07
 405 #define GTP_EXT_QOS_RES_BER_MASK                0xF0
 406 #define GTP_EXT_QOS_SDU_ERR_RATIO_MASK          0x0F
 407 #define GTP_EXT_QOS_TRANS_DELAY_MASK            0xFC
 408 #define GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK    0x03
 409
 410 /* Definition of Radio Priority's masks */
 411 #define GTPv1_EXT_RP_NSAPI_MASK                 0xF0
 412 #define GTPv1_EXT_RP_SPARE_MASK                 0x08
 413 #define GTPv1_EXT_RP_MASK                       0x07
 414
 415 /* definitions of GTP messages */
 416 #define GTP_MSG_UNKNOWN                 0x00
 417 #define GTP_MSG_ECHO_REQ                0x01
 418 #define GTP_MSG_ECHO_RESP               0x02
 419 #define GTP_MSG_VER_NOT_SUPP            0x03
 420 #define GTP_MSG_NODE_ALIVE_REQ          0x04
 421 #define GTP_MSG_NODE_ALIVE_RESP         0x05
 422 #define GTP_MSG_REDIR_REQ               0x06
 423 #define GTP_MSG_REDIR_RESP              0x07
 424 #define GTP_MSG_CREATE_PDP_REQ          0x10
 425 #define GTP_MSG_CREATE_PDP_RESP         0x11
 426 #define GTP_MSG_UPDATE_PDP_REQ          0x12
 427 #define GTP_MSG_UPDATE_PDP_RESP         0x13
 428 #define GTP_MSG_DELETE_PDP_REQ          0x14
 429 #define GTP_MSG_DELETE_PDP_RESP         0x15
 430 #define GTP_MSG_CREATE_AA_PDP_REQ       0x16    /* 2G */
 431 #define GTP_MSG_CREATE_AA_PDP_RESP      0x17    /* 2G */
 432 #define GTP_MSG_DELETE_AA_PDP_REQ       0x18    /* 2G */
 433 #define GTP_MSG_DELETE_AA_PDP_RESP      0x19    /* 2G */
 434 #define GTP_MSG_ERR_IND                 0x1A
 435 #define GTP_MSG_PDU_NOTIFY_REQ          0x1B
 436 #define GTP_MSG_PDU_NOTIFY_RESP         0x1C
 437 #define GTP_MSG_PDU_NOTIFY_REJ_REQ      0x1D
 438 #define GTP_MSG_PDU_NOTIFY_REJ_RESP     0x1E
 439 #define GTP_MSG_SUPP_EXT_HDR            0x1F
 440 #define GTP_MSG_SEND_ROUT_INFO_REQ      0x20
 441 #define GTP_MSG_SEND_ROUT_INFO_RESP     0x21
 442 #define GTP_MSG_FAIL_REP_REQ            0x22
 443 #define GTP_MSG_FAIL_REP_RESP           0x23
 444 #define GTP_MSG_MS_PRESENT_REQ          0x24
 445 #define GTP_MSG_MS_PRESENT_RESP         0x25
 446 #define GTP_MSG_IDENT_REQ               0x30
 447 #define GTP_MSG_IDENT_RESP              0x31
 448 #define GTP_MSG_SGSN_CNTXT_REQ          0x32
 449 #define GTP_MSG_SGSN_CNTXT_RESP         0x33
 450 #define GTP_MSG_SGSN_CNTXT_ACK          0x34
 451 #define GTP_MSG_FORW_RELOC_REQ          0x35
 452 #define GTP_MSG_FORW_RELOC_RESP         0x36
 453 #define GTP_MSG_FORW_RELOC_COMP         0x37
 454 #define GTP_MSG_RELOC_CANCEL_REQ        0x38
 455 #define GTP_MSG_RELOC_CANCEL_RESP       0x39
 456 #define GTP_MSG_FORW_SRNS_CNTXT         0x3A
 457 #define GTP_MSG_FORW_RELOC_ACK          0x3B
 458 #define GTP_MSG_FORW_SRNS_CNTXT_ACK     0x3C
 459 #define GTP_MSG_DATA_TRANSF_REQ         0xF0
 460 #define GTP_MSG_DATA_TRANSF_RESP        0xF1
 461 #define GTP_MSG_TPDU                    0xFF
 462
 463 static const value_string message_type[] = {
 464         { GTP_MSG_UNKNOWN,              "For future use" },
 465         { GTP_MSG_ECHO_REQ,             "Echo request" },
 466         { GTP_MSG_ECHO_RESP,            "Echo response" },
 467         { GTP_MSG_VER_NOT_SUPP,         "Version not supported" },
 468         { GTP_MSG_NODE_ALIVE_REQ,       "Node alive request" },
 469         { GTP_MSG_NODE_ALIVE_RESP,      "Node alive response" },
 470         { GTP_MSG_REDIR_REQ,            "Redirection request" },
 471         { GTP_MSG_REDIR_RESP,           "Redirection response" },
 472         { GTP_MSG_CREATE_PDP_REQ,       "Create PDP context request" },
 473         { GTP_MSG_CREATE_PDP_RESP,      "Create PDP context response" },
 474         { GTP_MSG_UPDATE_PDP_REQ,       "Update PDP context request" },
 475         { GTP_MSG_UPDATE_PDP_RESP,      "Update PDP context response" },
 476         { GTP_MSG_DELETE_PDP_REQ,       "Delete PDP context request" },
 477         { GTP_MSG_DELETE_PDP_RESP,      "Delete PDP context response" },
 478         { GTP_MSG_CREATE_AA_PDP_REQ,    "Create AA PDP Context Request" },
 479         { GTP_MSG_CREATE_AA_PDP_RESP,   "Create AA PDP Context Response" },
 480         { GTP_MSG_DELETE_AA_PDP_REQ,    "Delete AA PDP Context Request" },
 481         { GTP_MSG_DELETE_AA_PDP_RESP,   "Delete AA PDP Context Response" },
 482         { GTP_MSG_ERR_IND,              "Error indication" },
 483         { GTP_MSG_PDU_NOTIFY_REQ,       "PDU notification request" },
 484         { GTP_MSG_PDU_NOTIFY_RESP,      "PDU notification response" },
 485         { GTP_MSG_PDU_NOTIFY_REJ_REQ,   "PDU notification reject request" },
 486         { GTP_MSG_PDU_NOTIFY_REJ_RESP,  "PDU notification reject response" },
 487         { GTP_MSG_SUPP_EXT_HDR,         "Supported extension header notification" },
 488         { GTP_MSG_SEND_ROUT_INFO_REQ,   "Send routing information for GPRS request" },
 489         { GTP_MSG_SEND_ROUT_INFO_RESP,  "Send routing information for GPRS response" },
 490         { GTP_MSG_FAIL_REP_REQ,         "Failure report request" },
 491         { GTP_MSG_FAIL_REP_RESP,        "Failure report response" },
 492         { GTP_MSG_MS_PRESENT_REQ,       "Note MS GPRS present request" },
 493         { GTP_MSG_MS_PRESENT_RESP,      "Note MS GPRS present response" },
 494         { GTP_MSG_IDENT_REQ,            "Identification request" },
 495         { GTP_MSG_IDENT_RESP,           "Identification response" },
 496         { GTP_MSG_SGSN_CNTXT_REQ,       "SGSN context request" },
 497         { GTP_MSG_SGSN_CNTXT_RESP,      "SGSN context response" },
 498         { GTP_MSG_SGSN_CNTXT_ACK,       "SGSN context acknowledgement" },
 499         { GTP_MSG_FORW_RELOC_REQ,       "Forward relocation request" },
 500         { GTP_MSG_FORW_RELOC_RESP,      "Forward relocation response" },
 501         { GTP_MSG_FORW_RELOC_COMP,      "Forward relocation complete" },
 502         { GTP_MSG_RELOC_CANCEL_REQ,     "Relocation cancel request" },
 503         { GTP_MSG_RELOC_CANCEL_RESP,    "Relocation cancel response" },
 504         { GTP_MSG_FORW_SRNS_CNTXT,      "Forward SRNS context" },
 505         { GTP_MSG_FORW_RELOC_ACK,       "Forward relocation complete acknowledge" },
 506         { GTP_MSG_FORW_SRNS_CNTXT_ACK,  "Forward SRNS context acknowledge" },
 507         { GTP_MSG_DATA_TRANSF_REQ,      "Data record transfer request" },
 508         { GTP_MSG_DATA_TRANSF_RESP,     "Data record transfer response" },
 509         { GTP_MSG_TPDU,                 "T-PDU" },
 510         { 0, NULL }
 511 };
 512
 513 /* definitions of fields in extension header */
 514 #define GTP_EXT_CAUSE           0x01
 515 #define GTP_EXT_IMSI            0x02
 516 #define GTP_EXT_RAI             0x03
 517 #define GTP_EXT_TLLI            0x04
 518 #define GTP_EXT_PTMSI           0x05
 519 #define GTP_EXT_QOS_GPRS        0x06
 520 #define GTP_EXT_REORDER         0x08
 521 #define GTP_EXT_AUTH_TRI        0x09
 522 #define GTP_EXT_MAP_CAUSE       0x0B
 523 #define GTP_EXT_PTMSI_SIG       0x0C
 524 #define GTP_EXT_MS_VALID        0x0D
 525 #define GTP_EXT_RECOVER         0x0E
 526 #define GTP_EXT_SEL_MODE        0x0F
 527
 528 #define GTP_EXT_16              0x10
 529 #define GTP_EXT_FLOW_LABEL      0x10
 530 #define GTP_EXT_TEID            0x10    /* 0xFF10 3G */
 531
 532 #define GTP_EXT_17              0x11
 533 #define GTP_EXT_FLOW_SIG        0x11
 534 #define GTP_EXT_TEID_CP         0x11    /* 0xFF11 3G */
 535
 536 #define GTP_EXT_18              0x12
 537 #define GTP_EXT_FLOW_II         0x12
 538 #define GTP_EXT_TEID_II         0x12    /* 0xFF12 3G*/
 539
 540 #define GTP_EXT_19              0x13
 541 #define GTP_EXT_MS_REASON       0x13    /* same as 0x1D GTPv1_EXT_MS_REASON */
 542 #define GTP_EXT_TEAR_IND        0x13    /* 0xFF13 3G*/
 543
 544 #define GTP_EXT_NSAPI           0x14    /* 3G */
 545 #define GTP_EXT_RANAP_CAUSE     0x15    /* 3G */
 546 #define GTP_EXT_RAB_CNTXT       0x16    /* 3G */
 547 #define GTP_EXT_RP_SMS          0x17    /* 3G */
 548 #define GTP_EXT_RP              0x18    /* 3G */
 549 #define GTP_EXT_PKT_FLOW_ID     0x19    /* 3G */
 550 #define GTP_EXT_CHRG_CHAR       0x1A    /* 3G */
 551 #define GTP_EXT_TRACE_REF       0x1B    /* 3G */
 552 #define GTP_EXT_TRACE_TYPE      0x1C    /* 3G */
 553 #define GTPv1_EXT_MS_REASON     0x1D    /* 3G */
 554 #define GTP_EXT_TR_COMM         0x7E    /* charging */
 555 #define GTP_EXT_CHRG_ID         0x7F
 556 #define GTP_EXT_USER_ADDR       0x80
 557 #define GTP_EXT_MM_CNTXT        0x81
 558 #define GTP_EXT_PDP_CNTXT       0x82
 559 #define GTP_EXT_APN             0x83
 560 #define GTP_EXT_PROTO_CONF      0x84
 561 #define GTP_EXT_GSN_ADDR        0x85
 562 #define GTP_EXT_MSISDN          0x86
 563 #define GTP_EXT_QOS_UMTS        0x87    /* 3G */
 564 #define GTP_EXT_AUTH_QUI        0x88    /* 3G */
 565 #define GTP_EXT_TFT             0x89    /* 3G */
 566 #define GTP_EXT_TARGET_ID       0x8A    /* 3G */
 567 #define GTP_EXT_UTRAN_CONT      0x8B    /* 3G */
 568 #define GTP_EXT_RAB_SETUP       0x8C    /* 3G */
 569 #define GTP_EXT_HDR_LIST        0x8D    /* 3G */
 570 #define GTP_EXT_TRIGGER_ID      0x8E    /* 3G */
 571 #define GTP_EXT_OMC_ID          0x8F    /* 3G */
 572 #define GTP_EXT_REL_PACK        0xF9    /* charging */
 573 #define GTP_EXT_CAN_PACK        0xFA    /* charging */
 574 #define GTP_EXT_CHRG_ADDR       0xFB
 575 #define GTP_EXT_DATA_REQ        0xFC    /* charging */
 576 #define GTP_EXT_DATA_RESP       0xFD    /* charging */
 577 #define GTP_EXT_NODE_ADDR       0xFE    /* charging */
 578 #define GTP_EXT_PRIV_EXT        0xFF
 579
 580 static const value_string gtp_val[] = {
 581         { GTP_EXT_CAUSE,        "Cause of operation" },
 582         { GTP_EXT_IMSI,         "IMSI" },
 583         { GTP_EXT_RAI,          "Routing Area Identity" },
 584         { GTP_EXT_TLLI,         "Temporary Logical Link Identity" },
 585         { GTP_EXT_PTMSI,        "Packet TMSI" },
 586         { GTP_EXT_QOS_GPRS,     "Quality of Service" },
 587         { GTP_EXT_REORDER,      "Reorder required" },
 588         { GTP_EXT_AUTH_TRI,     "Authentication triplets" },
 589         { GTP_EXT_MAP_CAUSE,    "MAP cause" },
 590         { GTP_EXT_PTMSI_SIG,    "P-TMSI signature" },
 591         { GTP_EXT_MS_VALID,     "MS validated" },
 592         { GTP_EXT_RECOVER,      "Recovery" },
 593         { GTP_EXT_SEL_MODE,     "Selection mode" },
 594
 595         { GTP_EXT_16,           "Flow label data I" },
 596         { GTP_EXT_FLOW_LABEL,   "Flow label data I" },
 597         { GTP_EXT_TEID,         "Tunnel Endpoint Identifier Data I" },          /* 3G */
 598
 599         { GTP_EXT_17,           "Flow label signalling" },
 600         { GTP_EXT_FLOW_SIG,     "Flow label signalling" },
 601         { GTP_EXT_TEID_CP,      "Tunnel Endpoint Identifier Data Control Plane" },      /* 3G */
 602
 603         { GTP_EXT_18,           "Flow label data II" },
 604         { GTP_EXT_FLOW_II,      "Flow label data II" },
 605         { GTP_EXT_TEID_II,      "Tunnel Endpoint Identifier Data II" },         /* 3G */
 606
 607         { GTP_EXT_19,           "MS not reachable reason" },
 608         { GTP_EXT_MS_REASON,    "MS not reachable reason" },
 609         { GTP_EXT_TEAR_IND,     "Teardown ID" },                                        /* 3G */
 610
 611         { GTP_EXT_NSAPI,        "NSAPI" },                                              /* 3G */
 612         { GTP_EXT_RANAP_CAUSE,  "RANAP cause" },                                        /* 3G */
 613         { GTP_EXT_RAB_CNTXT,    "RAB context" },                                        /* 3G */
 614         { GTP_EXT_RP_SMS,       "Radio Priority for MO SMS" },                  /* 3G */
 615         { GTP_EXT_RP,           "Radio Priority" },                                     /* 3G */
 616         { GTP_EXT_PKT_FLOW_ID,  "Packet Flow ID" },                                     /* 3G */
 617         { GTP_EXT_CHRG_CHAR,    "Charging characteristics" },                           /* 3G */
 618         { GTP_EXT_TRACE_REF,    "Trace references" },                                   /* 3G */
 619         { GTP_EXT_TRACE_TYPE,   "Trace type" },                                 /* 3G */
 620         { GTPv1_EXT_MS_REASON,  "MS not reachable reason" },                            /* 3G */
 621         { GTP_EXT_TR_COMM,      "Packet transfer command" },                            /* charging */
 622         { GTP_EXT_CHRG_ID,      "Charging ID" },
 623         { GTP_EXT_USER_ADDR,    "End user address" },
 624         { GTP_EXT_MM_CNTXT,     "MM context" },
 625         { GTP_EXT_PDP_CNTXT,    "PDP context" },
 626         { GTP_EXT_APN,          "Access Point Name" },
 627         { GTP_EXT_PROTO_CONF,   "Protocol configuration options" },
 628         { GTP_EXT_GSN_ADDR,     "GSN address" },
 629         { GTP_EXT_MSISDN,       "MS international PSTN/ISDN number" },
 630         { GTP_EXT_QOS_UMTS,     "Quality of service (UMTS)" },                  /* 3G */
 631         { GTP_EXT_AUTH_QUI,     "Authentication quintuplets" },                 /* 3G */
 632         { GTP_EXT_TFT,          "Traffic Flow Template (TFT)" },                        /* 3G */
 633         { GTP_EXT_TARGET_ID,    "Target (RNC) identification" },                        /* 3G */
 634         { GTP_EXT_UTRAN_CONT,   "UTRAN transparent field" },                            /* 3G */
 635         { GTP_EXT_RAB_SETUP,    "RAB setup information" },                              /* 3G */
 636         { GTP_EXT_HDR_LIST,     "Extension Header Types List" },                        /* 3G */
 637         { GTP_EXT_TRIGGER_ID,   "Trigger Id" },                                 /* 3G */
 638         { GTP_EXT_OMC_ID,       "OMC Identity" },                                       /* 3G */
 639         { GTP_EXT_REL_PACK,     "Sequence numbers of released packets IE" },            /* charging */
 640         { GTP_EXT_CAN_PACK,     "Sequence numbers of canceled packets IE" },            /* charging */
 641         { GTP_EXT_CHRG_ADDR,    "Charging Gateway address" },
 642         { GTP_EXT_DATA_REQ,     "Data record packet" },                         /* charging */
 643         { GTP_EXT_DATA_RESP,    "Requests responded" },                         /* charging */
 644         { GTP_EXT_NODE_ADDR,    "Address of recommended node" },                        /* charging */
 645         { GTP_EXT_PRIV_EXT,     "Private Extension" },
 646         { 0, NULL }
 647 };
 648
 649 /* GPRS:        9.60 v7.6.0, page 37
 650  * UMTS:        29.060 v4.0, page 45
 651  */
 652 static const value_string cause_type[] = {
 653         { 0,    "Request IMSI" },
 654         { 1,    "Request IMEI" },
 655         { 2,    "Request IMSI and IMEI" },
 656         { 3,    "No identity needed" },
 657         { 4,    "MS refuses" },
 658         { 5,    "MS is not GPRS responding" },
 659         { 59,   "System failure" },     /* charging */
 660         { 60,   "The transmit buffers are becoming full" },     /* charging */
 661         { 61,   "The receive buffers are becoming full" },      /* charging */
 662         { 62,   "Another node is about to go down" },   /* charging */
 663         { 63,   "This node is about to go down" },      /* charging */
 664         { 128,  "Request accepted" },
 665         { 192,  "Non-existent" },
 666         { 193,  "Invalid message format" },
 667         { 194,  "IMSI not known" },
 668         { 195,  "MS is GPRS detached" },
 669         { 196,  "MS is not GPRS responding" },
 670         { 197,  "MS refuses" },
 671         { 198,  "Version not supported" },
 672         { 199,  "No resource available" },
 673         { 200,  "Service not supported" },
 674         { 201,  "Mandatory IE incorrect" },
 675         { 202,  "Mandatory IE missing" },
 676         { 203,  "Optional IE incorrect" },
 677         { 204,  "System failure" },
 678         { 205,  "Roaming restriction" },
 679         { 206,  "P-TMSI signature mismatch" },
 680         { 207,  "GPRS connection suspended" },
 681         { 208,  "Authentication failure" },
 682         { 209,  "User authentication failed" },
 683         { 210,  "Context not found" },
 684         { 211,  "All PDP dynamic addresses are occupied" },
 685         { 212,  "No memory is available" },
 686         { 213,  "Relocation failure" },
 687         { 214,  "Unknown mandatory extension header" },
 688         { 215,  "Semantic error in the TFT operation" },
 689         { 216,  "Syntactic error in the TFT operation" },
 690         { 217,  "Semantic errors in packet filter(s)" },
 691         { 218,  "Syntactic errors in packet filter(s)" },
 692         { 219,  "Missing or unknown APN" },
 693         { 220,  "Unknown PDP address or PDP type" },
 694         { 252,  "Request related to possibly duplicated packets already fulfilled" },   /* charging */
 695         { 253,  "Request already fulfilled" },  /* charging */
 696         { 254,  "Sequence numbers of released/cancelled packets IE incorrect" },        /* charging */
 697         { 255,  "Request not fulfilled" },      /* charging */
 698         { 0, NULL }
 699 };
 700
 701 /* GPRS:        9.02 v7.7.0
 702  * UMTS:        29.002 v4.2.1, chapter 17.5, page 268
 703  * TODO: Check if all map_cause values are included
 704  */
 705 static const value_string map_cause_type[] = {
 706         { 1, "Unknown subscriber" },
 707         { 8, "Roaming not allowed" },
 708         { 10, "Bearer service not provisioned" },
 709         { 11, "Teleservice not provisioned" },
 710         { 13, "Call barred" },
 711         { 21, "Facility not supported" },
 712         { 23, "Update GPRS location" },
 713         { 24, "Send routing info for GPRS" },
 714         { 26, "Note MS present for GPRS" },
 715         { 27, "Absent subscriber" },
 716         { 34, "System failure" },
 717         { 35, "Data missing" },
 718         { 36, "Unexpected data value" },
 719         { 44, "Number chenged" },
 720         { 45, "Busy subscriber" },
 721         { 46, "No subscriber reply" },
 722         { 48, "Facility not allowed" },
 723         { 0, NULL }
 724 };
 725
 726 static const value_string gsn_addr_type[] = {
 727         { 0x00, "IPv4" },
 728         { 0x01, "IPv6" },
 729         { 0,    NULL },
 730 };
 731
 732 static const value_string pdp_type[] = {
 733         { 0x00, "X.25" },
 734         { 0x01, "PPP" },
 735         { 0x02, "OSP:IHOSS" },
 736         { 0x21, "IPv4" },
 737         { 0x57, "IPv6" },
 738         { 0, NULL }
 739 };
 740
 741 static const value_string pdp_org_type[] = {
 742         { 0, "ETSI" },
 743         { 1, "IETF" },
 744         { 0, NULL }
 745 };
 746
 747 static const value_string qos_delay_type[] = {
 748         { 0x00, "Subsribed delay class (in MS to network direction)" },
 749         { 0x01, "Delay class 1" },
 750         { 0x02, "Delay class 2" },
 751         { 0x03, "Delay class 3" },
 752         { 0x04, "Delay class 4 (best effort)" },
 753         { 0x07, "Reserved" },
 754         { 0, NULL }
 755 };
 756
 757 static const value_string qos_reliability_type[] = {
 758         { 0x00, "Subscribed reliability class (in MS to network direction)" },
 759         { 0x01, "Ack GTP/LLC/RLC, Protected data" },
 760         { 0x02, "Unack GTP, Ack LLC/RLC, Protected data" },
 761         { 0x03, "Unack GTP/LLC, Ack RLC, Protected data" },
 762         { 0x04, "Unack GTP/LLC/RLC, Protected data" },
 763         { 0x05, "Unack GTP/LLC/RLC, Unprotected data" },
 764         { 0x07, "Reserved" },
 765         { 0, NULL }
 766 };
 767
 768 static const value_string qos_peak_type[] = {
 769         { 0x00, "Subscribed peak throughput (in MS to network direction)" },
 770         { 0x01, "Up to 1 000 oct/s" },
 771         { 0x02, "Up to 2 000 oct/s" },
 772         { 0x03, "Up to 4 000 oct/s" },
 773         { 0x04, "Up to 8 000 oct/s" },
 774         { 0x05, "Up to 16 000 oct/s" },
 775         { 0x06, "Up to 32 000 oct/s" },
 776         { 0x07, "Up to 64 000 oct/s" },
 777         { 0x08, "Up to 128 000 oct/s" },
 778         { 0x09, "Up to 256 000 oct/s" },
 779 /* QoS Peak throughput classes from 0x0A to 0x0F (from 10 to 15) are subscribed */
 780         { 0x0A, "Reserved" },
 781         { 0x0B, "Reserved" },
 782         { 0x0C, "Reserved" },
 783         { 0x0D, "Reserved" },
 784         { 0x0E, "Reserved" },
 785         { 0x0F, "Reserved" },
 786         { 0, NULL }
 787 };
 788
 789 static const value_string qos_precedence_type[] = {
 790         { 0x00, "Subscribed precedence (in MS to network direction)" },
 791         { 0x01, "High priority" },
 792         { 0x02, "Normal priority" },
 793         { 0x03, "Low priority" },
 794         { 0x07, "Reserved" },
 795         { 0, NULL }
 796 };
 797
 798 static const value_string qos_mean_type[] = {
 799         { 0x00, "Subscribed mean throughput (in MS to network direction)" },
 800         { 0x01, "100 oct/h" },          /* Class 2 */
 801         { 0x02, "200 oct/h" },          /* Class 3 */
 802         { 0x03, "500 oct/h" },          /* Class 4 */
 803         { 0x04, "1 000 oct/h" },        /* Class 5 */
 804         { 0x05, "2 000 oct/h" },        /* Class 6 */
 805         { 0x06, "5 000 oct/h" },        /* Class 7 */
 806         { 0x07, "10 000 oct/h" },       /* Class 8 */
 807         { 0x08, "20 000 oct/h" },       /* Class 9 */
 808         { 0x09, "50 000 oct/h" },       /* Class 10 */
 809         { 0x0A, "100 000 oct/h" },      /* Class 11 */
 810         { 0x0B, "200 000 oct/h" },      /* Class 12 */
 811         { 0x0C, "500 000 oct/h" },      /* Class 13 */
 812         { 0x0D, "1 000 000 oct/h" },    /* Class 14 */
 813         { 0x0E, "2 000 000 oct/h" },    /* Class 15 */
 814         { 0x0F, "5 000 000 oct/h" },    /* Class 16 */
 815         { 0x10, "10 000 000 oct/h" },   /* Class 17 */
 816         { 0x11, "20 000 000 oct/h" },   /* Class 18 */
 817         { 0x12, "50 000 000 oct/h" },   /* Class 19 */
 818 /* QoS Mean throughput classes from 0x13 to 0x1E (from 19 to 30) are subscribed */
 819         { 0x13, "Reserved" },
 820         { 0x14, "Reserved" },
 821         { 0x15, "Reserved" },
 822         { 0x16, "Reserved" },
 823         { 0x17, "Reserved" },
 824         { 0x18, "Reserved" },
 825         { 0x19, "Reserved" },
 826         { 0x1A, "Reserved" },
 827         { 0x1B, "Reserved" },
 828         { 0x1C, "Reserved" },
 829         { 0x1D, "Reserved" },
 830         { 0x1E, "Reserved" },
 831         { 0x1F, "Best effort" },        /* Class 1 */
 832         { 0, NULL }
 833 };
 834
 835 static const value_string qos_del_err_sdu[] = {
 836         { 0x00, "Subscribed delivery of erroneous SDUs (in MS to network direction)" },
 837         { 0x01, "No detect ('-')" },
 838         { 0x02, "Erroneous SDUs are delivered ('yes')" },
 839         { 0x03, "Erroneous SDUs are not delivered ('no')" },
 840         { 0x07, "Reserved" },           /* All other values are reserved */
 841         { 0, NULL }
 842 };
 843
 844 static const value_string qos_del_order[] = {
 845         { 0x00, "Subscribed delivery order (in MS to network direction)" },
 846         { 0x01, "With delivery order ('yes')" },
 847         { 0x02, "Without delivery order ('no')" },
 848         { 0x03, "Reserved" },           /* All other values are reserved */
 849         { 0, NULL }
 850 };
 851
 852 static const value_string qos_traf_class[] = {
 853         { 0x00, "Subscribed traffic class (in MS to network direction)" },
 854         { 0x01, "Conversational class" },
 855         { 0x02, "Streaming class" },
 856         { 0x03, "Interactive class" },
 857         { 0x04, "Background class" },
 858         { 0x07, "Reserved" },           /* All other values are reserved */
 859         { 0, NULL }
 860 };
 861
 862 static const value_string qos_max_sdu_size[] = {
 863         { 0x00, "Subscribed maximum SDU size (in MS to network direction" },
 864         /* For values from 0x01 to 0x96 (from 1 to 150), use a granularity of 10 octets */
 865         { 0x97, "1502 octets" },
 866         { 0x98, "1510 octets" },
 867         { 0x99, "1520 octets" },
 868         { 0, NULL }                                     /* All other values are reserved */
 869 };
 870
 871 static const value_string qos_max_ul[] = {
 872         { 0x00, "Subscribed maximum bit rate for uplink (in MS to network direction)" },
 873         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 874         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 875         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 876         { 0xFF, "0 kbps" },
 877         { 0, NULL }
 878 };
 879
 880 static const value_string qos_max_dl[] = {
 881         { 0x00, "Subscribed maximum bit rate for downlink (in MS to network direction)" },
 882         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 883         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 884         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 885         { 0xFF, "0 kbps" },
 886         { 0, NULL }
 887 };
 888
 889 static const value_string qos_res_ber[] = {
 890         { 0x00, "Subscribed residual BER (in MS to network direction)" },
 891         { 0x01, "1/20 = 5x10^-2" },
 892         { 0x02, "1/100 = 1x10^-2" },
 893         { 0x03, "1/200 = 5x10^-3" },
 894         { 0x04, "1/250 = 4x10^-3" },
 895         { 0x05, "1/1 000 = 1x10^-3" },
 896         { 0x06, "1/10 000 = 1x10^-4" },
 897         { 0x07, "1/100 000 = 1x10^-5" },
 898         { 0x08, "1/1 000 000 = 1x10^-6" },
 899         { 0x09, "3/50 000 000 = 6x10^-8" },
 900         { 0x0F, "Reserved" },           /* All other values are reserved */
 901         { 0, NULL }
 902 };
 903
 904 static const value_string qos_sdu_err_ratio[] = {
 905         { 0x00, "Subscribed SDU error ratio (in MS to network direction)" },
 906         { 0x01, "1/100 = 1x10^-2" },
 907         { 0x02, "7/1000 = 7x10^-3" },
 908         { 0x03, "1/1 000 = 1x10^-3" },
 909         { 0x04, "1/10 000 = 1x10^-4" },
 910         { 0x05, "1/100 000 = 1x10^-5" },
 911         { 0x06, "1/1 000 000 = 1x10^-6" },
 912         { 0x07, "1/10 = 1x10^-1" },
 913         { 0x0F, "Reserved" },           /* All other values are reserved */
 914         { 0, NULL }
 915 };
 916
 917 static const value_string qos_traf_handl_prio[] = {
 918         { 0x00, "Subscribed traffic handling priority (in MS to network direction)" },
 919         { 0x01, "Priority level 1" },
 920         { 0x02, "Priority level 2" },
 921         { 0x03, "Priority level 3" },
 922         { 0, NULL }
 923 };
 924
 925 static const value_string qos_trans_delay[] = {
 926         { 0x00, "Subscribed Transfer Delay (in MS to network direction)" },
 927         { 0x01, "10 ms" },      /* Using a granularity of 10 ms */
 928         { 0x02, "20 ms" },
 929         { 0x03, "30 ms" },
 930         { 0x04, "40 ms" },
 931         { 0x05, "50 ms" },
 932         { 0x06, "60 ms" },
 933         { 0x07, "70 ms" },
 934         { 0x08, "80 ms" },
 935         { 0x09, "90 ms" },
 936         { 0x0A, "100 ms" },
 937         { 0x0B, "110 ms" },
 938         { 0x0C, "120 ms" },
 939         { 0x0D, "130 ms" },
 940         { 0x0E, "140 ms" },
 941         { 0x0F, "150 ms" },
 942         { 0x10, "200 ms" },     /* (For values from 0x10 to 0x1F, value = 200 ms + (value - 0x10) * 50 ms */
 943         { 0x11, "250 ms" },
 944         { 0x12, "300 ms" },
 945         { 0x13, "350 ms" },
 946         { 0x14, "400 ms" },
 947         { 0x15, "450 ms" },
 948         { 0x16, "500 ms" },
 949         { 0x17, "550 ms" },
 950         { 0x18, "600 ms" },
 951         { 0x19, "650 ms" },
 952         { 0x1A, "700 ms" },
 953         { 0x1B, "750 ms" },
 954         { 0x1C, "800 ms" },
 955         { 0x1D, "850 ms" },
 956         { 0x1E, "900 ms" },
 957         { 0x1F, "950 ms" },
 958         { 0x20, "1000 ms" },    /* For values from 0x20 to 0x3E, value = 1000 ms + (value - 0x20) * 100 ms */
 959         { 0x21, "1100 ms" },
 960         { 0x22, "1200 ms" },
 961         { 0x23, "1300 ms" },
 962         { 0x24, "1400 ms" },
 963         { 0x25, "1500 ms" },
 964         { 0x26, "1600 ms" },
 965         { 0x27, "1700 ms" },
 966         { 0x28, "1800 ms" },
 967         { 0x29, "1900 ms" },
 968         { 0x2A, "2000 ms" },
 969         { 0x2B, "2100 ms" },
 970         { 0x2C, "2200 ms" },
 971         { 0x2D, "2300 ms" },
 972         { 0x2E, "2400 ms" },
 973         { 0x2F, "2500 ms" },
 974         { 0x30, "2600 ms" },
 975         { 0x31, "2700 ms" },
 976         { 0x32, "2800 ms" },
 977         { 0x33, "2900 ms" },
 978         { 0x34, "3000 ms" },
 979         { 0x35, "3100 ms" },
 980         { 0x36, "3200 ms" },
 981         { 0x37, "3300 ms" },
 982         { 0x38, "3400 ms" },
 983         { 0x39, "3500 ms" },
 984         { 0x3A, "3600 ms" },
 985         { 0x3B, "3700 ms" },
 986         { 0x3C, "3800 ms" },
 987         { 0x3D, "3900 ms" },
 988         { 0x3E, "4000 ms" },
 989         { 0x3F, "Reserved"},
 990         { 0, NULL }
 991 };
 992
 993 static const value_string qos_guar_ul[] = {
 994         { 0x00, "Subscribed guaranteed bit rate for uplink (in MS to network direction)" },
 995         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 996         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 997         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 998         { 0xFF, "0 kbps" },
 999         { 0, NULL }
1000 };
1001
1002 static const value_string qos_guar_dl[] = {
1003         { 0x00, "Subscribed guaranteed bit rate for downlink (in MS to network direction)" },
1004         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
1005         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
1006         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
1007         { 0xFF, "0 kbps" },
1008         { 0, NULL }
1009 };
1010
1011 static const value_string sel_mode_type[] = {
1012         { 0,    "MS or network provided APN, subscribed verified" },
1013         { 1,    "MS provided APN, subscription not verified" },
1014         { 2,    "Network provided APN, subscription not verified" },
1015         { 3,    "For future use (Network provided APN, subscription not verified" },/* Shall not be sent. If received, shall be sent as value 2 */
1016         { 0,    NULL }
1017 };
1018
1019 static const value_string tr_comm_type[] = {
1020         { 1,    "Send data record packet" },
1021         { 2,    "Send possibly duplicated data record packet" },
1022         { 3,    "Cancel data record packet" },
1023         { 4,    "Release data record packet"},
1024         { 0,    NULL }
1025 };
1026
1027 /* TODO: CHeck if all ms_reasons are included */
1028 static const value_string ms_not_reachable_type[] = {
1029         { 0,    "No paging response via the MSC" },
1030         { 1,    "IMSI detached" },
1031         { 2,    "Roaming restriction" },
1032         { 3,    "Deregistered in the HLR for non GPRS" },
1033         { 4,    "MS purge for non GPRS" },
1034         { 5,    "No paging response via the SGSN" },
1035         { 6,    "GPRS detached" },
1036         { 7,    "Deregistered in the HLR for non GPRS" },
1037         { 8,    "MS purged for GPRS" },
1038         { 9,    "Unidentified subscriber via the MSC" },
1039         { 10,   "Unidentified subscriber via the SGSN" },
1040         { 0,    NULL }
1041 };
1042
1043 /* UMTS:        25.413 v3.4.0, chapter 9.2.1.4, page 80
1044  */
1045 static const value_string ranap_cause_type[] = {
1046 /* Radio Network Layer Cause (1-->64) */
1047         { 1, "RAB preempted" },
1048         { 2, "Trelocoverall Expiry" },
1049         { 3, "Trelocprep Expiry" },
1050         { 4, "Treloccomplete Expiry" },
1051         { 5, "Tqueing Expiry" },
1052         { 6, "Relocation Triggered" },
1053         { 7, "TRELOCalloc Expiry" },
1054         { 8, "Unable to Estabish During Relocation" },
1055         { 9, "Unknown Target RNC" },
1056         { 10, "Relocation Cancelled" },
1057         { 11, "Successful Relocation" },
1058         { 12, "Requested Ciphering and/or Integrity Protection Algorithms not Supported" },
1059         { 13, "Change of Ciphering and/or Integrity Protection is not supported" },
1060         { 14, "Failure in the Radio Interface Procedure" },
1061         { 15, "Release due to UTRAN Generated Reason" },
1062         { 16, "User Inactivity" },
1063         { 17, "Time Critical Relocation" },
1064         { 18, "Requested Traffic Class not Available" },
1065         { 19, "Invalid RAB Parameters Value" },
1066         { 20, "Requested Maximum Bit Rate not Available" },
1067         { 21, "Requested Guaranteed Bit Rate not Available" },
1068         { 22, "Requested Transfer Delay not Achievable" },
1069         { 23, "Invalid RAB Parameters Combination" },
1070         { 24, "Condition Violation for SDU Parameters" },
1071         { 25, "Condition Violation for Traffic Handling Priority" },
1072         { 26, "Condition Violation for Guaranteed Bit Rate" },
1073         { 27, "User Plane Versions not Supported" },
1074         { 28, "Iu UP Failure" },
1075         { 29, "Relocation Failure in Target CN/RNC or Target System" },
1076         { 30, "Invalid RAB ID" },
1077         { 31, "No Remaining RAB" },
1078         { 32, "Interaction with other procedure" },
1079         { 33, "Requested Maximum Bit Rate for DL not Available" },
1080         { 34, "Requested Maximum Bit Rate for UL not Available" },
1081         { 35, "Requested Guaranteed Bit Rate for DL not Available" },
1082         { 36, "Requested Guaranteed Bit Rate for UL not Available" },
1083         { 37, "Repeated Integrity Checking Failure" },
1084         { 38, "Requested Report Type not supported" },
1085         { 39, "Request superseded" },
1086         { 40, "Release due to UE generated signalling connection release" },
1087         { 41, "Resource Optimisation Relocation" },
1088         { 42, "Requested Information Not Available" },
1089         { 43, "Relocation desirable for radio reasons" },
1090         { 44, "Relocation not supported in Target RNC or Target System" },
1091         { 45, "Directed Retry" },
1092         { 46, "Radio Connection With UE Lost" },
1093 /* Transport Layer Cause (65-->80) */
1094         { 65, "Signalling Transport Resource Failure" },
1095         { 66, "Iu Transport Connection Failed to Establish" },
1096 /* NAS Cause (81-->96) */
1097         { 81, "User Restriction Start Indication" },
1098         { 82, "User Restriction End Indication" },
1099         { 83, "Normal Release" },
1100 /* Protocol Cause (97-->112) */
1101         { 97, "Transfer Syntax Error" },
1102         { 98, "Semantic Error" },
1103         { 99, "Message not compatible with receiver state" },
1104         { 100, "Abstract Syntax Error (Reject)" },
1105         { 101, "Abstract Syntax Error (Ignore and Notify)" },
1106         { 102, "Abstract Syntax Error (Falsely Constructed Message" },
1107 /* Miscellaneous Cause (113-->128) */
1108         { 113, "O & M Intervention" },
1109         { 114, "No Resource Available" },
1110         { 115, "Unspecified Failure" },
1111         { 116, "Network Opimisation" },
1112 /* Non-standard Cause (129-->255) */
1113         { 0, NULL }
1114 };
1115
1116 static const value_string mm_sec_modep[] = {
1117         { 0,    "Used cipher value, UMTS keys and Quintuplets" },
1118         { 1,    "GSM key and triplets" },
1119         { 2,    "UMTS key and quintuplets" },
1120         { 3,    "GSM key and quintuplets" },
1121         { 0,    NULL }
1122 };
1123
1124 static const value_string mm_proto_disc[] = {
1125         { 0x00, "Group call control" },
1126         { 0x01, "Broadcast call control" },
1127         { 0x02, "PDSS1" },
1128         { 0x03, "Call control; call related SS messages" },
1129         { 0x04, "PDSS2" },
1130         { 0x05, "Mobility Management messages for non-GPRS services" },
1131         { 0x06, "Radio Resource management messages" },
1132         { 0x08, "Mobility Management messages for GPRS services" },
1133         { 0x09, "SMS" },
1134         { 0x0A, "Session Management messages" },
1135         { 0x0B, "Non-call related SS messages" },
1136         { 0, NULL }
1137 };
1138
1139 static const value_string mm_rr_mess[] = {
1140         { 0x3C, "RR initialization request" },
1141         { 0x3B, "Additional assignment" },
1142         { 0x3F, "Immediate assignment" },
1143         { 0x39, "Immediate assignment extended" },
1144         { 0x3A, "Immediate assignment reject" },
1145
1146         { 0x35, "Ciphering mode command" },
1147         { 0x32, "Ciphering mode complete" },
1148
1149         { 0x30, "Configuration change command" },
1150         { 0x31, "Configuration change ack" },
1151         { 0x33, "Configuration change reject" },
1152
1153         { 0x2E, "Assignment command" },
1154         { 0x29, "Assignment complete" },
1155         { 0x2F, "Assigment failure" },
1156         { 0x2B, "Handover command" },
1157         { 0x2C, "Handover complete" },
1158         { 0x28, "Handover failure" },
1159         { 0x2D, "Physical information" },
1160
1161         { 0x08, "RR-cell change order" },
1162         { 0x23, "PDCH assignment command" },
1163
1164         { 0x0D, "Channel release" },
1165         { 0x0A, "Partial release" },
1166         { 0x0F, "PArtial release complete" },
1167
1168         { 0x21, "Paging request type 1" },
1169         { 0x22, "Paging request type 2" },
1170         { 0x24, "Paging request type 3" },
1171         { 0x27, "Paging response" },
1172         { 0x20, "Notification/NCH" },
1173         { 0x25, "Notification/FACCH" },
1174         { 0x26, "Reserved" },
1175         { 0x0B, "Reserved" },
1176
1177         { 0x18, "System information type 8" },
1178         { 0x19, "System information type 1" },
1179         { 0x1A, "System information type 2" },
1180         { 0x1B, "System information type 3" },
1181         { 0x1C, "System information type 4" },
1182         { 0x1D, "System information type 5" },
1183         { 0x1E, "System information type 6" },
1184         { 0x1F, "System information type 7" },
1185
1186         { 0x02, "System information type 2bis" },
1187         { 0x03, "System information type 2ter" },
1188         { 0x05, "System information type 5bis" },
1189         { 0x06, "System information type 5ter" },
1190         { 0x04, "System information 9" },
1191         { 0x00, "System information 13" },
1192         { 0x01, "System information 14" },
1193
1194         { 0x3D, "System information type 16" },
1195         { 0x3E, "System information type 17" },
1196
1197         { 0x10, "Channel mode modify" },
1198         { 0x12, "RR status" },
1199         { 0x17, "Channel mode modify ack" },
1200         { 0x14, "Frequency redefinition" },
1201         { 0x15, "Measurement report" },
1202         { 0x16, "Classmark change" },
1203         { 0x13, "Classmark enquiry" },
1204         { 0x36, "Extended measurement report" },
1205         { 0x37, "Extended measurement order" },
1206         { 0x34, "GPRS suspension request" },
1207
1208         { 0x09, "VGCS uplink grant" },
1209         { 0x0E, "Uplink release" },
1210         { 0x0C, "Uplink free" },
1211         { 0x2A, "Uplink busy" },
1212         { 0x11, "Talker indication" },
1213
1214         { 0, NULL }
1215 };
1216
1217 static const value_string mm_mm_mess[] = {
1218         { 0x01, "IMSI DETACH INDICATION" },
1219         { 0x02, "LOCATION UPDATING ACCEPT" },
1220         { 0x04, "LOCATION UPDATING REJECT" },
1221         { 0x08, "LOCATION UPDATING REQUEST" },
1222         { 0x11, "AUTHENTICATION REJECT" },
1223         { 0x12, "AUTHENTICATION REQUEST" },
1224         { 0x14, "AUTHENTICATION RESPONSE" },
1225         { 0x18, "IDENTITY REQUEST" },
1226         { 0x19, "IDENTITY RESPONSE" },
1227         { 0x1A, "TMSI REALLOCATION COMMAND" },
1228         { 0x1B, "TMSI REALLOCATION COMPLETE" },
1229         { 0x21, "CM SERVICE ACCEPT" },
1230         { 0x22, "CM SERVICE REJECT" },
1231         { 0x23, "CM SERVICE ABORT" },
1232         { 0x24, "CM SERVICE REQUEST" },
1233         { 0x25, "CM SERVICE PROMPT" },
1234         { 0x26, "NOTIFICATION RESPONSE" },
1235         { 0x28, "CM RE-ESTABLISHMENT REQUEST" },
1236         { 0x29, "ABORT" },
1237         { 0x30, "MM NULL" },
1238         { 0x31, "MM STATUS" },
1239         { 0x32, "MM INFORMATION" },
1240         { 0, NULL }
1241 };
1242
1243 static const value_string mm_cc_mess[] = {
1244         { 0x00, "escape to nationally specific" },
1245 /*{ 0 x 0 0, "- - - Call establishment messages:" },*/
1246         { 0x01, "ALERTING" },
1247         { 0x08, "CALL CONFIRMED" },
1248         { 0x02, "CALL PROCEEDING" },
1249         { 0x07, "CONNECT" },
1250         { 0x0F, "CONNECT ACKNOWLEDGE" },
1251         { 0x0E, "EMERGENCY SETUP" },
1252         { 0x03, "PROGRESS" },
1253         { 0x04, "CC-ESTABLISHMENT" },
1254         { 0x06, "CC-ESTABLISHMENT CONFIRMED" },
1255         { 0x0B, "RECALL" },
1256         { 0x09, "START CC" },
1257         { 0x05, "SETUP" },
1258 /*{ 0 x 0 1, "- - - Call information phase messages:" },*/
1259         { 0x17, "MODIFY" },
1260         { 0x1F, "MODIFY COMPLETE" },
1261         { 0x13, "MODIFY REJECT" },
1262         { 0x10, "USER INFORMATION" },
1263         { 0x18, "HOLD" },
1264         { 0x19, "HOLD ACKNOWLEDGE" },
1265         { 0x1A, "HOLD REJECT" },
1266         { 0x1C, "RETRIEVE" },
1267         { 0x1D, "RETRIEVE ACKNOWLEDGE" },
1268         { 0x1E, "RETRIEVE REJECT" },
1269 /*{ 0 x 1 0, "- - - Call clearing messages:" },*/
1270         { 0x25, "DISCONNECT" },
1271         { 0x2D, "RELEASE" },
1272         { 0x2A, "RELEASE COMPLETE" },
1273 /*{ 0 x 1 1, "- - - Miscellaneous messages:" },*/
1274         { 0x39, "CONGESTION CONTROL" },
1275         { 0x3E, "NOTIFY" },
1276         { 0x3D, "STATUS" },
1277         { 0x34, "STATUS ENQUIRY" },
1278         { 0x35, "START DTMF" },
1279         { 0x31, "STOP DTMF" },
1280         { 0x32, "STOP DTMF ACKNOWLEDGE" },
1281         { 0x36, "START DTMF ACKNOWLEDGE" },
1282         { 0x37, "START DTMF REJECT" },
1283         { 0x3A, "FACILITY" },
1284         { 0, NULL }
1285 };
1286
1287 static const value_string mm_gprs_mess[] = {
1288         { 0x01, "Attach request" },
1289         { 0x02, "Attach accept" },
1290         { 0x03, "Attach complete" },
1291         { 0x04, "Attach reject" },
1292         { 0x05, "Detach request" },
1293         { 0x06, "Detach accept" },
1294         { 0x08, "Routing area update request" },
1295         { 0x09, "Routing area update accept" },
1296         { 0x0A, "Routing area update complete" },
1297         { 0x0B, "Routing area update reject" },
1298         { 0x10, "P-TMSI reallocation command" },
1299         { 0x11, "P-TMSI reallocation complete" },
1300         { 0x12, "Authentication and ciphering req" },
1301         { 0x13, "Authentication and ciphering resp" },
1302         { 0x14, "Authentication and ciphering rej" },
1303         { 0x15, "Identity request" },
1304         { 0x16, "Identity response" },
1305         { 0x20, "GMM status" },
1306         { 0x21, "GMM information" },
1307         { 0, NULL }
1308 };
1309
1310 static const value_string tft_code_type[] = {
1311         { 0, "Spare" },
1312         { 1, "Create new TFT" },
1313         { 2, "Delete existing TFT" },
1314         { 3, "Add packet filters to existing TFT" },
1315         { 4, "Replace packet filters in existing TFT" },
1316         { 5, "Delete packet filters from existing TFT" },
1317         { 6, "Reserved" },
1318         { 7, "Reserved" },
1319         { 0, NULL }
1320 };
1321
1322 static const value_string cdr_close_type[] = {
1323         { 0, "PDP release" },
1324         { 1, "Volume limit" },
1325         { 2, "Time limit" },
1326         { 3, "SGSN change" },
1327         { 4, "Max changes" },
1328         { 6, "Management" },
1329         { 7, "Abnormal" },
1330         { 0, NULL }
1331 };
1332
1333 static dissector_handle_t ip_handle;
1334 static dissector_handle_t ipv6_handle;
1335 static dissector_handle_t ppp_handle;
1336 static dissector_handle_t data_handle;
1337
1338 static int decode_gtp_cause             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1339 static int decode_gtp_imsi              (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1340 static int decode_gtp_rai               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1341 static int decode_gtp_tlli              (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1342 static int decode_gtp_ptmsi             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1343 static int decode_gtp_qos_gprs          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1344 static int decode_gtp_reorder           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1345 static int decode_gtp_auth_tri          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1346 static int decode_gtp_map_cause         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1347 static int decode_gtp_ptmsi_sig         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1348 static int decode_gtp_ms_valid          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1349 static int decode_gtp_recovery          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1350 static int decode_gtp_sel_mode          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1351 static int decode_gtp_16                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1352 static int decode_gtp_17                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1353 static int decode_gtp_18                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1354 static int decode_gtp_19                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1355 static int decode_gtp_nsapi             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1356 static int decode_gtp_ranap_cause       (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1357 static int decode_gtp_rab_cntxt         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1358 static int decode_gtp_rp_sms            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1359 static int decode_gtp_rp                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1360 static int decode_gtp_pkt_flow_id       (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1361 static int decode_gtp_chrg_char         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1362 static int decode_gtp_trace_ref         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1363 static int decode_gtp_trace_type        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1364 static int decode_gtp_ms_reason         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1365 static int decode_gtp_tr_comm           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1366 static int decode_gtp_chrg_id           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1367 static int decode_gtp_user_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1368 static int decode_gtp_mm_cntxt          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1369 static int decode_gtp_pdp_cntxt         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1370 static int decode_gtp_apn               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1371 static int decode_gtp_gsn_addr          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1372 static int decode_gtp_proto_conf        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1373 static int decode_gtp_msisdn            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1374 static int decode_gtp_qos_umts          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1375 static int decode_gtp_auth_qui          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1376 static int decode_gtp_tft               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1377 static int decode_gtp_target_id         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1378 static int decode_gtp_utran_cont        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1379 static int decode_gtp_rab_setup         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1380 static int decode_gtp_hdr_list          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1381 static int decode_gtp_trigger_id        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1382 static int decode_gtp_omc_id            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1383 static int decode_gtp_chrg_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1384 static int decode_gtp_rel_pack          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1385 static int decode_gtp_can_pack          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1386 static int decode_gtp_data_req          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1387 static int decode_gtp_data_resp         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1388 static int decode_gtp_node_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1389 static int decode_gtp_priv_ext          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1390 static int decode_gtp_unknown           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1391
1392 typedef struct _gtp_opt {
1393         int   optcode;
1394 /*      char  *name; */
1395         int  (*decode)(tvbuff_t  *, int, packet_info *, proto_tree *);
1396 } gtp_opt_t;
1397
1398 static const gtp_opt_t gtpopt[] = {
1399         { GTP_EXT_CAUSE,        decode_gtp_cause },
1400         { GTP_EXT_IMSI,         decode_gtp_imsi },
1401         { GTP_EXT_RAI,          decode_gtp_rai },
1402         { GTP_EXT_TLLI,         decode_gtp_tlli },
1403         { GTP_EXT_PTMSI,        decode_gtp_ptmsi },
1404         { GTP_EXT_QOS_GPRS,     decode_gtp_qos_gprs },
1405         { GTP_EXT_REORDER,      decode_gtp_reorder },
1406         { GTP_EXT_AUTH_TRI,     decode_gtp_auth_tri },
1407         { GTP_EXT_MAP_CAUSE,    decode_gtp_map_cause },
1408         { GTP_EXT_PTMSI_SIG,    decode_gtp_ptmsi_sig },
1409         { GTP_EXT_MS_VALID,     decode_gtp_ms_valid },
1410         { GTP_EXT_RECOVER,      decode_gtp_recovery },
1411         { GTP_EXT_SEL_MODE,     decode_gtp_sel_mode },
1412         { GTP_EXT_16,           decode_gtp_16 },
1413         { GTP_EXT_17,           decode_gtp_17 },
1414         { GTP_EXT_18,           decode_gtp_18 },
1415         { GTP_EXT_19,           decode_gtp_19 },
1416         { GTP_EXT_NSAPI,        decode_gtp_nsapi },
1417         { GTP_EXT_RANAP_CAUSE,  decode_gtp_ranap_cause },
1418         { GTP_EXT_RAB_CNTXT,    decode_gtp_rab_cntxt },
1419         { GTP_EXT_RP_SMS,       decode_gtp_rp_sms },
1420         { GTP_EXT_RP,           decode_gtp_rp },
1421         { GTP_EXT_PKT_FLOW_ID,  decode_gtp_pkt_flow_id },
1422         { GTP_EXT_CHRG_CHAR,    decode_gtp_chrg_char },
1423         { GTP_EXT_TRACE_REF,    decode_gtp_trace_ref },
1424         { GTP_EXT_TRACE_TYPE,   decode_gtp_trace_type },
1425         { GTPv1_EXT_MS_REASON,  decode_gtp_ms_reason },
1426         { GTP_EXT_TR_COMM,      decode_gtp_tr_comm },
1427         { GTP_EXT_CHRG_ID,      decode_gtp_chrg_id },
1428         { GTP_EXT_USER_ADDR,    decode_gtp_user_addr },
1429         { GTP_EXT_MM_CNTXT,     decode_gtp_mm_cntxt },
1430         { GTP_EXT_PDP_CNTXT,    decode_gtp_pdp_cntxt },
1431         { GTP_EXT_APN,          decode_gtp_apn },
1432         { GTP_EXT_PROTO_CONF,   decode_gtp_proto_conf },
1433         { GTP_EXT_GSN_ADDR,     decode_gtp_gsn_addr },
1434         { GTP_EXT_MSISDN,       decode_gtp_msisdn },
1435         { GTP_EXT_QOS_UMTS,     decode_gtp_qos_umts },                          /* 3G */
1436         { GTP_EXT_AUTH_QUI,     decode_gtp_auth_qui },                          /* 3G */
1437         { GTP_EXT_TFT,          decode_gtp_tft },                               /* 3G */
1438         { GTP_EXT_TARGET_ID,    decode_gtp_target_id },                 /* 3G */
1439         { GTP_EXT_UTRAN_CONT,   decode_gtp_utran_cont },                        /* 3G */
1440         { GTP_EXT_RAB_SETUP,    decode_gtp_rab_setup },                 /* 3G */
1441         { GTP_EXT_HDR_LIST,     decode_gtp_hdr_list },                          /* 3G */
1442         { GTP_EXT_TRIGGER_ID,   decode_gtp_trigger_id },                        /* 3G */
1443         { GTP_EXT_OMC_ID,       decode_gtp_omc_id },                            /* 3G */
1444         { GTP_EXT_REL_PACK,     decode_gtp_rel_pack },                          /* charging */
1445         { GTP_EXT_CAN_PACK,     decode_gtp_can_pack },                  /* charging */
1446         { GTP_EXT_CHRG_ADDR,    decode_gtp_chrg_addr },
1447         { GTP_EXT_DATA_REQ,     decode_gtp_data_req },                          /* charging */
1448         { GTP_EXT_DATA_RESP,    decode_gtp_data_resp },                 /* charging */
1449         { GTP_EXT_NODE_ADDR,    decode_gtp_node_addr },
1450         { GTP_EXT_PRIV_EXT,     decode_gtp_priv_ext },
1451         { 0,                    decode_gtp_unknown }
1452 };
1453
1454 typedef struct {
1455         guint8          flags;
1456         guint8          message;
1457         guint16         length;
1458         guint16         seq_no;
1459         guint16         flow_label;
1460         guint8          sndcp_no;
1461         guint8          spare[3];
1462         guint8          tid[8];
1463 } _gtpv0_hdr;
1464
1465 typedef struct {
1466         guint8          flags;
1467         guint8          message;
1468         guint16         length;
1469         guint32         teid;
1470 } _gtpv1_hdr;
1471
1472 static struct gcdr_ {                           /* GCDR 118B */
1473         guint8          imsi[8];
1474         guint32         ggsnaddr;
1475         guint32         chrgid;
1476         guint32         sgsnaddr;
1477         gchar           apn[63];
1478         guint8          pdporg;
1479         guint8          pdptype;
1480         guint32         pdpaddr;
1481         guint8          addrflag;
1482         guint8          qos[3];
1483         guint32         uplink;
1484         guint32         downlink;
1485         guint32         timestamp;
1486         guint32         opening;
1487         guint32         duration;
1488         guint8          closecause;
1489         guint32         seqno;
1490         guint8          msisdn[9];
1491 } gcdr;
1492
1493 typedef struct change_ {
1494         guint8          change;
1495         guint32         time1;
1496         guint32         time2;
1497         guint32         uplink;
1498         guint32         downlink;
1499         guint8          qos_req[3];
1500         guint8          qos_neg[3];
1501 } change_t;
1502
1503 static struct _scdr {                           /* SCDR 277B */
1504         guint16         len;
1505         guint8          netini;
1506         guint8          anon;
1507         guint8          imsilen;
1508         guint8          imsi[8];
1509         guint8          imei[8];
1510         guint8          msisdnlen;
1511         guint8          msisdn[10];
1512         guint32         sgsnaddr;
1513         guint8          msclass_notused[12];
1514         guint8          msclass_caplen;
1515         guint8          msclass_cap;
1516         guint16         msclass_capomit;
1517         guint16         lac;
1518         guint8          rac;
1519         guint16         cid;
1520         guint32         chrgid;
1521         guint32         ggsnaddr;
1522         gchar           apn[64];
1523         guint8          pdporg;
1524         guint8          pdptype;
1525         guint32         pdpaddr;
1526         guint8          listind;
1527         change_t        change[5];
1528         guint32         timestamp;
1529         guint32         opening;
1530         guint32         duration;
1531         guint8          sgsnchange;
1532         guint8          closecause;
1533         guint8          diag1;
1534         guint8          diag2;
1535         guint8          diag3;
1536         guint8          diag4;
1537         guint32         diag5;
1538         guint32         seqno;
1539 } scdr;
1540
1541 typedef struct mmchange_ {
1542         guint16         lac;
1543         guint8          rac;
1544         guint16         cid;
1545         guint8          omit[8];
1546 } mmchange_t;
1547
1548 static struct _mcdr {                           /* MCDR 147B */
1549         guint16         len;
1550         guint8          imsilen;
1551         guint8          imsi[8];
1552         guint8          imei[8];
1553         guint8          msisdnlen;
1554         guint8          msisdn[10];
1555         guint32         sgsnaddr;
1556         guint8          msclass_notused[12];
1557         guint8          msclass_caplen;
1558         guint8          msclass_cap;
1559         guint16         msclass_capomit;
1560         guint16         lac;
1561         guint8          rac;
1562         guint16         cid;
1563         guint8          change_count;
1564         mmchange_t      change[5];
1565         guint32         timestamp;
1566         guint32         opening;
1567 /*      guint8          opening[8]; */
1568         guint32         duration;
1569         guint8          sgsnchange;
1570         guint8          closecause;
1571         guint8          diag1;
1572         guint8          diag2;
1573         guint8          diag3;
1574         guint8          diag4;
1575         guint32         diag5;
1576         guint32         seqno;
1577 } mcdr;
1578
1579 static struct _socdr {                                  /* SOCDR 80B */
1580         guint16         len;
1581         guint8          imsilen;
1582         guint8          imsi[8];
1583         guint8          imei[8];
1584         guint8          msisdnlen;
1585         guint8          msisdn[10];
1586         guint8          msclass_notused[12];
1587         guint8          msclass_caplen;
1588         guint8          msclass_cap;
1589         guint16         msclass_capomit;
1590         guint8          serv_centr[9];
1591         guint8          rec_ent[9];
1592         guint16         lac;
1593         guint8          rac;
1594         guint16         cid;
1595         guint32         time1;
1596         guint32         time2;
1597         guint8          messref;
1598         guint16         smsres;
1599 } socdr;
1600
1601
1602 static struct _stcdr {                                  /* STCDR 79B */
1603         guint16         len;
1604         guint8          imsilen;
1605         guint8          imsi[8];
1606         guint8          imei[8];
1607         guint8          msisdnlen;
1608         guint8          msisdn[10];
1609         guint8          msclass_notused[12];
1610         guint8          msclass_caplen;
1611         guint8          msclass_cap;
1612         guint16         msclass_capomit;
1613         guint8          serv_centr[9];
1614         guint8          rec_ent[9];
1615         guint16         lac;
1616         guint8          rac;
1617         guint16         cid;
1618         guint32         time1;
1619         guint32         time2;
1620         guint16         smsres;
1621 } stcdr;
1622
1623 static  guint8          gtp_version = 0;
1624 static  char            *yesno[] = { "False", "True" };
1625
1626 static void
1627 col_append_str_gtp(column_info *cinfo, gint el, gchar *proto_name) {
1628
1629         int     i;
1630         int     max_len;
1631         gchar   _tmp[COL_MAX_LEN];
1632
1633         max_len = COL_MAX_LEN;
1634
1635         for (i = 0; i < cinfo->num_cols; i++) {
1636                 if (cinfo->fmt_matx[i][el]) {
1637                         if (cinfo->col_data[i] != cinfo->col_buf[i]) {
1638
1639                                 strncpy(cinfo->col_buf[i], cinfo->col_data[i], max_len);
1640                                 cinfo->col_buf[i][max_len - 1] = '\0';
1641                         }
1642
1643                         _tmp[0] = '\0';
1644                         strcat(_tmp, proto_name);
1645                         strcat(_tmp, " <");
1646                         strcat(_tmp, cinfo->col_buf[i]);
1647                         strcat(_tmp, ">");
1648                         cinfo->col_buf[i][0] = '\0';
1649                         strcat(cinfo->col_buf[i], _tmp);
1650                         cinfo->col_data[i] = cinfo->col_buf[i];
1651                 }
1652         }
1653 }
1654
1655 static gchar *
1656 id_to_str(const guint8 *ad) {
1657
1658         static gchar    *str[17];
1659         gchar           *p;
1660         guint8          bits8to5, bits4to1, i;
1661         static const    gchar hex_digits[10] = "0123456789";
1662
1663         p = (gchar *)&str[17];
1664         *--p = '\0';
1665         i = 7;
1666         for (;;) {
1667                 bits8to5 = (ad[i] >> 4) & 0x0F;
1668                 bits4to1 = ad[i] & 0x0F;
1669                 if (bits8to5 < 0xA) *--p = hex_digits[bits8to5];
1670                 if (bits4to1 < 0xA) *--p = hex_digits[bits4to1];
1671                 if (i == 0) break;
1672                 i--;
1673         }
1674         return p;
1675 }
1676
1677 static gchar *
1678 imsi_to_str(const guint8 *ad) {
1679
1680         static gchar    *str[16];
1681         gchar           *p;
1682         guint8          i, j = 0;
1683
1684         p = (gchar *)&str[0];
1685         for (i=0;i<8;i++) {
1686                 if ((ad[i] & 0x0F) <= 9) p[j++] = (ad[i] & 0x0F) + 0x30;
1687                 if (((ad[i] >> 4) & 0x0F) <= 9) p[j++] = ((ad[i] >> 4) & 0x0F) + 0x30;
1688         }
1689         p[j] = 0;
1690
1691         return p;
1692 }
1693
1694 static gchar *
1695 msisdn_to_str(const guint8 *ad, int len) {
1696
1697         static gchar    *str[17];
1698         gchar           *p;
1699         guint8          bits8to5, bits4to1, i;
1700         static const    gchar hex_digits[16] = "0123456789      ";
1701
1702         p = (gchar *)&str[0];
1703         *p = '+';
1704         i = 1;
1705         for (;;) {
1706                 bits8to5 = (ad[i] >> 4) & 0x0F;
1707                 bits4to1 = ad[i] & 0x0F;
1708                 if (bits4to1 < 0xA) *++p = hex_digits[bits4to1];
1709                 if (bits8to5 < 0xA) *++p = hex_digits[bits8to5];
1710                 if (i == len-1) break;
1711                 i++;
1712         }
1713         *++p = '\0';
1714         return (gchar *)&str[0];
1715 }
1716
1717 static gchar *
1718 time_int_to_str (guint32 time)
1719 {
1720
1721         nstime_t        nstime;
1722
1723         nstime.secs = time;
1724         nstime.nsecs = 0;
1725
1726         return abs_time_to_str (&nstime);
1727 }
1728
1729 static gchar *
1730 rel_time_int_to_str (guint32 time)
1731 {
1732
1733         nstime_t        nstime;
1734
1735         nstime.secs = time;
1736         nstime.nsecs = 0;
1737
1738         return rel_time_to_str (&nstime);
1739 }
1740
1741 /* Next definitions and function check_field_presence checks if given field
1742  * in GTP packet is compliant with ETSI
1743  */
1744 typedef struct _header {
1745         guint8          code;
1746         guint8          presence;
1747 } ext_header;
1748
1749 typedef struct _message {
1750         guint8          code;
1751         ext_header      fields[32];
1752 } _gtp_mess_items;
1753
1754 /* ---------------------
1755  * GPRS messages
1756  * ---------------------*/
1757 static _gtp_mess_items gprs_mess_items[] = {
1758
1759 {
1760         GTP_MSG_ECHO_REQ, {
1761                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1762                 { 0,                    0 }
1763         }
1764 },
1765 {
1766         GTP_MSG_ECHO_RESP, {
1767                 { GTP_EXT_RECOVER,      GTP_MANDATORY },
1768                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1769                 { 0,                    0 }
1770         }
1771 },
1772 {
1773         GTP_MSG_VER_NOT_SUPP, {
1774                 { 0,                    0 }
1775         }
1776 },
1777 {
1778         GTP_MSG_NODE_ALIVE_REQ, {
1779                 { GTP_EXT_NODE_ADDR,    GTP_MANDATORY },
1780                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1781                 { 0,                    0 }
1782         }
1783 },
1784 {
1785         GTP_MSG_NODE_ALIVE_RESP, {
1786                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1787                 { 0,                    0 }
1788         }
1789 },
1790 {
1791         GTP_MSG_REDIR_REQ, {
1792                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1793                 { GTP_EXT_NODE_ADDR,    GTP_OPTIONAL },
1794                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1795                 { 0,                    0 }
1796         }
1797 },
1798 {
1799         GTP_MSG_REDIR_RESP, {
1800                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1801                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1802                 { 0,                    0 }
1803         }
1804 },
1805 {
1806         GTP_MSG_CREATE_PDP_REQ, {
1807                 { GTP_EXT_QOS_GPRS,     GTP_MANDATORY },
1808                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1809                 { GTP_EXT_SEL_MODE,     GTP_MANDATORY },
1810                 { GTP_EXT_FLOW_LABEL,   GTP_MANDATORY },
1811                 { GTP_EXT_FLOW_SIG,     GTP_MANDATORY },
1812                 { GTP_EXT_MSISDN,       GTP_MANDATORY },
1813                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
1814                 { GTP_EXT_APN,          GTP_MANDATORY },
1815                 { GTP_EXT_PROTO_CONF,   GTP_OPTIONAL },
1816                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1817                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1818                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1819                 { 0,                    0 }
1820         }
1821 },
1822 {
1823         GTP_MSG_CREATE_PDP_RESP, {
1824                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1825                 { GTP_EXT_QOS_GPRS,     GTP_CONDITIONAL },
1826                 { GTP_EXT_REORDER,      GTP_CONDITIONAL },
1827                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1828                 { GTP_EXT_FLOW_LABEL,   GTP_CONDITIONAL },
1829                 { GTP_EXT_FLOW_SIG,     GTP_CONDITIONAL },
1830                 { GTP_EXT_CHRG_ID,      GTP_CONDITIONAL },
1831                 { GTP_EXT_USER_ADDR,    GTP_CONDITIONAL },
1832                 { GTP_EXT_PROTO_CONF,   GTP_OPTIONAL },
1833                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1834                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1835                 { GTP_EXT_CHRG_ADDR,    GTP_OPTIONAL },
1836                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1837                 { 0,                    0 }
1838         }
1839 },
1840 {
1841         GTP_MSG_UPDATE_PDP_REQ, {
1842                 { GTP_EXT_QOS_GPRS,     GTP_MANDATORY },
1843                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1844                 { GTP_EXT_FLOW_LABEL,   GTP_MANDATORY },
1845                 { GTP_EXT_FLOW_SIG,     GTP_MANDATORY },
1846                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1847                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1848                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1849                 { 0,                    0 },
1850         }
1851 },
1852 {
1853         GTP_MSG_UPDATE_PDP_RESP, {
1854                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1855                 { GTP_EXT_QOS_GPRS,     GTP_CONDITIONAL },
1856                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1857                 { GTP_EXT_FLOW_LABEL,   GTP_CONDITIONAL },
1858                 { GTP_EXT_FLOW_SIG,     GTP_CONDITIONAL },
1859                 { GTP_EXT_CHRG_ID,      GTP_CONDITIONAL },
1860                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1861                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1862                 { GTP_EXT_CHRG_ADDR,    GTP_OPTIONAL },
1863                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1864                 { 0,                    0 }
1865         }
1866 },
1867 {
1868         GTP_MSG_DELETE_PDP_REQ, {
1869                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1870                 { 0,                    0 }
1871         }
1872 },
1873 {
1874         GTP_MSG_DELETE_PDP_RESP, {
1875                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1876                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1877                 { 0,                    0 },
1878         }
1879 },
1880 {
1881         GTP_MSG_CREATE_AA_PDP_REQ, {
1882                 { GTP_EXT_QOS_GPRS,     GTP_MANDATORY },
1883                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1884                 { GTP_EXT_SEL_MODE,     GTP_MANDATORY },
1885                 { GTP_EXT_FLOW_LABEL,   GTP_MANDATORY },
1886                 { GTP_EXT_FLOW_SIG,     GTP_MANDATORY },
1887                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
1888                 { GTP_EXT_APN,          GTP_MANDATORY },
1889                 { GTP_EXT_PROTO_CONF,   GTP_OPTIONAL },
1890                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1891                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
1892                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1893                 { 0,                    0 }
1894         }
1895 },
1896 {
1897         GTP_MSG_CREATE_AA_PDP_RESP, {
1898                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1899                 { GTP_EXT_QOS_GPRS,     GTP_CONDITIONAL },
1900                 { GTP_EXT_REORDER,      GTP_CONDITIONAL },
1901                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
1902                 { GTP_EXT_FLOW_LABEL,   GTP_CONDITIONAL },
1903                 { GTP_EXT_FLOW_SIG,     GTP_CONDITIONAL },
1904                 { GTP_EXT_CHRG_ID,      GTP_CONDITIONAL },
1905                 { GTP_EXT_USER_ADDR,    GTP_CONDITIONAL },
1906                 { GTP_EXT_PROTO_CONF,   GTP_OPTIONAL },
1907                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1908                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
1909                 { GTP_EXT_CHRG_ADDR,    GTP_OPTIONAL },
1910                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1911                 { 0,                    0 }
1912         }
1913 },
1914 {
1915         GTP_MSG_DELETE_AA_PDP_REQ, {
1916                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1917                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1918                 { 0,                    0 }
1919         }
1920 },
1921 {
1922         GTP_MSG_DELETE_AA_PDP_RESP, {
1923                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1924                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1925                 { 0,                    0 }
1926         }
1927 },
1928 {
1929         GTP_MSG_ERR_IND, {
1930                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1931                 { 0,                    0 }
1932         }
1933 },
1934 {
1935         GTP_MSG_PDU_NOTIFY_REQ, {
1936                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
1937                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1938                 { 0,                    0 }
1939         }
1940 },
1941 {
1942         GTP_MSG_PDU_NOTIFY_RESP, {
1943                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1944                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1945                 { 0,                    0 }
1946         }
1947 },
1948 {
1949         GTP_MSG_PDU_NOTIFY_REJ_REQ, {
1950                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1951                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
1952                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1953                 { 0,                    0 }
1954         }
1955 },
1956 {
1957         GTP_MSG_PDU_NOTIFY_REJ_RESP, {
1958                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1959                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1960                 { 0,                    0 }
1961         }
1962 },
1963 {
1964         GTP_MSG_SEND_ROUT_INFO_REQ, {
1965                 { GTP_EXT_IMSI,         GTP_MANDATORY },
1966                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1967                 { 0,                    0 }
1968         }
1969 },
1970 {
1971         GTP_MSG_SEND_ROUT_INFO_RESP, {
1972                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1973                 { GTP_EXT_IMSI,         GTP_MANDATORY },
1974                 { GTP_EXT_MAP_CAUSE,    GTP_OPTIONAL },
1975                 { GTP_EXT_MS_REASON,    GTP_OPTIONAL },
1976                 { GTP_EXT_GSN_ADDR,     GTP_OPTIONAL },
1977                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1978                 { 0,                    0 }
1979         }
1980 },
1981 {
1982         GTP_MSG_FAIL_REP_REQ, {
1983                 { GTP_EXT_IMSI,         GTP_MANDATORY },
1984                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1985                 { 0,                    0 }
1986         }
1987 },
1988 {
1989         GTP_MSG_FAIL_REP_RESP, {
1990                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
1991                 { GTP_EXT_MAP_CAUSE,    GTP_OPTIONAL },
1992                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
1993                 { 0,                    0 }
1994         }
1995 },
1996 {
1997         GTP_MSG_MS_PRESENT_REQ, {
1998                 { GTP_EXT_IMSI,         GTP_MANDATORY },
1999                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2000                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2001                 { 0,                    0 }
2002         }
2003 },
2004 {
2005         GTP_MSG_MS_PRESENT_RESP, {
2006                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2007                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2008                 { 0,                    0 }
2009         }
2010 },
2011 {
2012         GTP_MSG_IDENT_REQ, {
2013                 { GTP_EXT_RAI,          GTP_MANDATORY },
2014                 { GTP_EXT_PTMSI,        GTP_MANDATORY },
2015                 { GTP_EXT_PTMSI_SIG,    GTP_OPTIONAL },
2016                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2017                 { 0,                    0 }
2018         }
2019 },
2020 {
2021         GTP_MSG_IDENT_RESP, {
2022                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2023                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2024                 { GTP_EXT_AUTH_TRI,     GTP_OPTIONAL },
2025                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2026                 { 0,                    0 }
2027         }
2028 },
2029 {
2030         GTP_MSG_SGSN_CNTXT_REQ, {
2031                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2032                 { GTP_EXT_RAI,          GTP_MANDATORY },
2033                 { GTP_EXT_TLLI,         GTP_MANDATORY },
2034                 { GTP_EXT_PTMSI_SIG,    GTP_OPTIONAL },
2035                 { GTP_EXT_MS_VALID,     GTP_OPTIONAL },
2036                 { GTP_EXT_FLOW_SIG,     GTP_MANDATORY },
2037                 { 0,                    0 }
2038         }
2039 },
2040 {
2041         GTP_MSG_SGSN_CNTXT_RESP, {
2042                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2043                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2044                 { GTP_EXT_FLOW_SIG,     GTP_CONDITIONAL },
2045                 { GTP_EXT_MM_CNTXT,     GTP_CONDITIONAL },
2046                 { GTP_EXT_PDP_CNTXT,    GTP_CONDITIONAL },
2047                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2048                 { 0,                    0 }
2049         }
2050 },
2051 {
2052         GTP_MSG_SGSN_CNTXT_ACK, {
2053                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2054                 { GTP_EXT_FLOW_II,      GTP_CONDITIONAL },
2055                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2056                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2057                 { 0,                    0 }
2058         }
2059 },
2060 {
2061         GTP_MSG_DATA_TRANSF_REQ, {
2062                 { GTP_EXT_TR_COMM,      GTP_MANDATORY },
2063                 { GTP_EXT_DATA_REQ,     GTP_CONDITIONAL },
2064                 { GTP_EXT_REL_PACK,     GTP_CONDITIONAL },
2065                 { GTP_EXT_CAN_PACK,     GTP_CONDITIONAL },
2066                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2067                 { 0,                    0 }
2068         }
2069 },
2070 {
2071         GTP_MSG_DATA_TRANSF_RESP, {
2072                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2073                 { GTP_EXT_DATA_RESP,    GTP_MANDATORY },
2074                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2075                 { 0,                    0 }
2076         }
2077 },
2078 {
2079         0, {
2080                 { 0,                    0 }
2081         }
2082 }
2083 };
2084
2085 /* -----------------------------
2086  * UMTS messages
2087  * -----------------------------*/
2088 static _gtp_mess_items umts_mess_items[] = {
2089
2090 {
2091         GTP_MSG_ECHO_REQ, {
2092                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2093                 { 0,                    0 }
2094         }
2095 },
2096 {
2097         GTP_MSG_ECHO_RESP, {
2098                 { GTP_EXT_RECOVER,      GTP_MANDATORY },
2099                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2100                 { 0,                    0 }
2101         }
2102 },
2103 {
2104         GTP_MSG_VER_NOT_SUPP, {
2105                 { 0,                    0 }
2106         }
2107 },
2108 {
2109         GTP_MSG_NODE_ALIVE_REQ, {
2110                 { GTP_EXT_NODE_ADDR,    GTP_MANDATORY },
2111                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2112                 { 0,                    0 }
2113         }
2114 },
2115 {
2116         GTP_MSG_NODE_ALIVE_RESP, {
2117                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2118                 { 0,                    0 }
2119         }
2120 },
2121 {
2122         GTP_MSG_REDIR_REQ, {
2123                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2124                 { GTP_EXT_NODE_ADDR,    GTP_OPTIONAL },
2125                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2126                 { 0,                    0 }
2127         }
2128 },
2129 {
2130         GTP_MSG_REDIR_REQ, {
2131                 { 0,                    0 }
2132         }
2133 },
2134 {
2135         GTP_MSG_CREATE_PDP_REQ, {
2136                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2137                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
2138                 { GTP_EXT_SEL_MODE,     GTP_CONDITIONAL },
2139                 { GTP_EXT_TEID,         GTP_MANDATORY },
2140                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2141                 { GTP_EXT_NSAPI,        GTP_MANDATORY },
2142                 { GTP_EXT_NSAPI,        GTP_CONDITIONAL },
2143                 { GTP_EXT_CHRG_CHAR,    GTP_OPTIONAL },
2144                 { GTP_EXT_TRACE_REF,    GTP_OPTIONAL },
2145                 { GTP_EXT_TRACE_TYPE,   GTP_OPTIONAL },
2146                 { GTP_EXT_USER_ADDR,    GTP_CONDITIONAL },
2147                 { GTP_EXT_APN,          GTP_CONDITIONAL },
2148                 { GTP_EXT_PROTO_CONF,   GTP_CONDITIONAL },
2149                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2150                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2151                 { GTP_EXT_MSISDN,       GTP_CONDITIONAL },
2152                 { GTP_EXT_QOS_UMTS,     GTP_MANDATORY },
2153                 { GTP_EXT_TFT,          GTP_CONDITIONAL },
2154                 { GTP_EXT_TRIGGER_ID,   GTP_OPTIONAL },
2155                 { GTP_EXT_OMC_ID,       GTP_OPTIONAL },
2156                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2157                 { 0,                    0 }
2158         }
2159 },
2160 {
2161         GTP_MSG_CREATE_PDP_RESP, {
2162                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2163                 { GTP_EXT_REORDER,      GTP_CONDITIONAL },
2164                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
2165                 { GTP_EXT_TEID,         GTP_CONDITIONAL },
2166                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2167                 { GTP_EXT_CHRG_ID,      GTP_CONDITIONAL },
2168                 { GTP_EXT_USER_ADDR,    GTP_CONDITIONAL },
2169                 { GTP_EXT_PROTO_CONF,   GTP_OPTIONAL },
2170                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2171                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2172                 { GTP_EXT_QOS_UMTS,     GTP_CONDITIONAL },
2173                 { GTP_EXT_CHRG_ADDR,    GTP_OPTIONAL },
2174                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2175                 { 0,                    0 }
2176         }
2177 },
2178 {       /* checked, SGSN -> GGSN */
2179         GTP_MSG_UPDATE_PDP_REQ, {
2180                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2181                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
2182                 { GTP_EXT_TEID,         GTP_MANDATORY },
2183                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2184                 { GTP_EXT_NSAPI,        GTP_MANDATORY },
2185                 { GTP_EXT_TRACE_REF,    GTP_OPTIONAL },
2186                 { GTP_EXT_TRACE_TYPE,   GTP_OPTIONAL },
2187                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2188                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2189                 { GTP_EXT_QOS_UMTS,     GTP_MANDATORY },
2190                 { GTP_EXT_TFT,          GTP_OPTIONAL },
2191                 { GTP_EXT_TRIGGER_ID,   GTP_OPTIONAL },
2192                 { GTP_EXT_OMC_ID,       GTP_OPTIONAL },
2193                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2194                 { 0,                    0 }
2195         }
2196 },
2197 {       /* checked, GGSN -> SGSN */
2198         GTP_MSG_UPDATE_PDP_RESP, {
2199                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2200                 { GTP_EXT_RECOVER,      GTP_OPTIONAL },
2201                 { GTP_EXT_TEID,         GTP_CONDITIONAL },
2202                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2203                 { GTP_EXT_CHRG_ID,      GTP_CONDITIONAL },
2204                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2205                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2206                 { GTP_EXT_QOS_UMTS,     GTP_CONDITIONAL },
2207                 { GTP_EXT_CHRG_ADDR,    GTP_OPTIONAL },
2208                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2209                 { 0,                    0 }
2210         }
2211 },
2212 {
2213         GTP_MSG_DELETE_PDP_REQ, {
2214                 { GTP_EXT_TEAR_IND,     GTP_CONDITIONAL },
2215                 { GTP_EXT_NSAPI,        GTP_MANDATORY },
2216                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2217                 { 0,                    0 }
2218         }
2219 },
2220 {
2221         GTP_MSG_DELETE_PDP_RESP, {
2222                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2223                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2224                 { 0,                    0 }
2225         }
2226 },
2227 {
2228         GTP_MSG_ERR_IND, {
2229                 { GTP_EXT_TEID,         GTP_MANDATORY },
2230                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2231                 { 0,                    0 }
2232         }
2233 },
2234 {
2235         GTP_MSG_PDU_NOTIFY_REQ, {
2236                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2237                 { GTP_EXT_TEID_CP,      GTP_MANDATORY },
2238                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
2239                 { GTP_EXT_APN,          GTP_MANDATORY },
2240                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2241                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2242                 { 0,                    0 }
2243         }
2244 },
2245 {
2246         GTP_MSG_PDU_NOTIFY_RESP, {
2247                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2248                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2249                 { 0,                    0 }
2250         }
2251 },
2252 {
2253         GTP_MSG_PDU_NOTIFY_REJ_REQ, {
2254                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2255                 { GTP_EXT_TEID_CP,      GTP_MANDATORY },
2256                 { GTP_EXT_USER_ADDR,    GTP_MANDATORY },
2257                 { GTP_EXT_APN,          GTP_MANDATORY },
2258                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2259                 { 0,                    0 }
2260         }
2261 },
2262 {
2263         GTP_MSG_PDU_NOTIFY_REJ_RESP, {
2264                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2265                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2266                 { 0,                    0 }
2267         }
2268 },
2269 {
2270         GTP_MSG_SUPP_EXT_HDR, {
2271                 { GTP_EXT_HDR_LIST,     GTP_MANDATORY },
2272                 { 0,                    0 }
2273         }
2274 },
2275 {
2276         GTP_MSG_SEND_ROUT_INFO_REQ, {
2277                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2278                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2279                 { 0,                    0 }
2280         }
2281 },
2282 {
2283         GTP_MSG_SEND_ROUT_INFO_RESP, {
2284                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2285                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2286                 { GTP_EXT_MAP_CAUSE,    GTP_OPTIONAL },
2287                 { GTPv1_EXT_MS_REASON,  GTP_OPTIONAL },
2288                 { GTP_EXT_GSN_ADDR,     GTP_OPTIONAL },
2289                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2290                 { 0,                    0 }
2291         }
2292 },
2293 {
2294         GTP_MSG_FAIL_REP_REQ, {
2295                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2296                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2297                 { 0,                    0 }
2298         }
2299 },
2300 {
2301         GTP_MSG_FAIL_REP_RESP, {
2302                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2303                 { GTP_EXT_MAP_CAUSE,    GTP_OPTIONAL },
2304                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2305                 { 0,                    0 }
2306         }
2307 },
2308 {
2309         GTP_MSG_MS_PRESENT_REQ, {
2310                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2311                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2312                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2313                 { 0,                    0 }
2314         }
2315 },
2316 {
2317         GTP_MSG_MS_PRESENT_RESP, {
2318                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2319                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2320                 { 0,                    0 }
2321         }
2322 },
2323 {
2324         GTP_MSG_IDENT_REQ, {
2325                 { GTP_EXT_RAI,          GTP_MANDATORY },
2326                 { GTP_EXT_PTMSI,        GTP_MANDATORY },
2327                 { GTP_EXT_PTMSI_SIG,    GTP_CONDITIONAL },
2328                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2329                 { 0,                    0 }
2330         }
2331 },
2332 {
2333         GTP_MSG_IDENT_RESP, {
2334                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2335                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2336                 { GTP_EXT_AUTH_TRI,     GTP_CONDITIONAL },
2337                 { GTP_EXT_AUTH_QUI,     GTP_CONDITIONAL },
2338                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2339                 { 0,                    0 }
2340         }
2341 },
2342 {
2343         GTP_MSG_SGSN_CNTXT_REQ, {
2344                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2345                 { GTP_EXT_RAI,          GTP_MANDATORY },
2346                 { GTP_EXT_TLLI,         GTP_CONDITIONAL },
2347                 { GTP_EXT_PTMSI,        GTP_CONDITIONAL },
2348                 { GTP_EXT_PTMSI_SIG,    GTP_CONDITIONAL },
2349                 { GTP_EXT_MS_VALID,     GTP_OPTIONAL },
2350                 { GTP_EXT_TEID_CP,      GTP_MANDATORY },
2351                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2352                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2353                 { 0,                    0 }
2354         }
2355 },
2356 {
2357         GTP_MSG_SGSN_CNTXT_RESP, {
2358                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2359                 { GTP_EXT_IMSI,         GTP_CONDITIONAL },
2360                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2361                 { GTP_EXT_RP_SMS,       GTP_OPTIONAL },
2362                 { GTP_EXT_RP,           GTP_OPTIONAL },
2363                 { GTP_EXT_PKT_FLOW_ID,  GTP_OPTIONAL },
2364                 { GTP_EXT_MM_CNTXT,     GTP_CONDITIONAL },
2365                 { GTP_EXT_PDP_CNTXT,    GTP_CONDITIONAL },
2366                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2367                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2368                 { 0,                    0 }
2369         }
2370 },
2371 {
2372         GTP_MSG_SGSN_CNTXT_ACK, {
2373                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2374                 { GTP_EXT_TEID_II,      GTP_CONDITIONAL },
2375                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2376                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2377                 { 0,                    0 }
2378         }
2379 },
2380 {
2381         GTP_MSG_FORW_RELOC_REQ, {
2382                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2383                 { GTP_EXT_TEID_CP,      GTP_MANDATORY },
2384                 { GTP_EXT_RANAP_CAUSE,  GTP_MANDATORY },
2385                 { GTP_EXT_MM_CNTXT,     GTP_MANDATORY },
2386                 { GTP_EXT_PDP_CNTXT,    GTP_CONDITIONAL },
2387                 { GTP_EXT_GSN_ADDR,     GTP_MANDATORY },
2388                 { GTP_EXT_TARGET_ID,    GTP_MANDATORY },
2389                 { GTP_EXT_UTRAN_CONT,   GTP_MANDATORY },
2390                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2391                 { 0,                    0 }
2392         }
2393 },
2394 {
2395         GTP_MSG_FORW_RELOC_RESP, {
2396                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2397                 { GTP_EXT_TEID_CP,      GTP_CONDITIONAL },
2398                 { GTP_EXT_RANAP_CAUSE,  GTP_CONDITIONAL },
2399                 { GTP_EXT_GSN_ADDR,     GTP_CONDITIONAL },
2400                 { GTP_EXT_UTRAN_CONT,   GTP_OPTIONAL },
2401                 { GTP_EXT_RAB_SETUP,    GTP_CONDITIONAL },
2402                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2403                 { 0,                    0 }
2404         }
2405 },
2406 {
2407         GTP_MSG_FORW_RELOC_COMP, {
2408                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2409                 { 0,                    0 }
2410         }
2411 },
2412 {
2413         GTP_MSG_RELOC_CANCEL_REQ, {
2414                 { GTP_EXT_IMSI,         GTP_MANDATORY },
2415                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2416                 { 0,                    0 }
2417         }
2418 },
2419 {
2420         GTP_MSG_RELOC_CANCEL_RESP, {
2421                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2422                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2423                 { 0,                    0 }
2424         }
2425 },
2426 {
2427         GTP_MSG_FORW_RELOC_ACK, {
2428                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2429                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2430                 { 0,                    0 }
2431         }
2432 },
2433 {
2434         GTP_MSG_FORW_SRNS_CNTXT, {
2435                 { GTP_EXT_RAB_CNTXT,    GTP_MANDATORY },
2436                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2437                 { 0,                    0 }
2438         }
2439 },
2440 {
2441         GTP_MSG_FORW_SRNS_CNTXT_ACK, {
2442                 { GTP_EXT_CAUSE,        GTP_MANDATORY },
2443                 { GTP_EXT_PRIV_EXT,     GTP_OPTIONAL },
2444                 { 0,                    0 }
2445         }
2446 },
2447 {
2448         0, {
2449                 { 0,                    0 }
2450         }
2451 }
2452 };
2453
2454 static int
2455 check_field_presence(guint8 message, guint8 field, int *position) {
2456
2457         guint                   i = 0;
2458         _gtp_mess_items         *mess_items;
2459
2460         switch(gtp_version) {
2461                 case 0:
2462                         mess_items = gprs_mess_items;
2463                         break;
2464                 case 1:
2465                         mess_items = umts_mess_items;
2466                         break;
2467                 default:
2468                         return -2;
2469         }
2470
2471         while (mess_items[i].code) {
2472                 if (mess_items[i].code == message) {
2473
2474                         while (mess_items[i].fields[*position].code) {
2475                                 if (mess_items[i].fields[*position].code == field) {
2476                                         (*position)++;
2477                                         return 0;
2478                                 } else {
2479                                 if (mess_items[i].fields[*position].presence == GTP_MANDATORY) {
2480                                         return mess_items[i].fields[(*position)++].code;
2481                                 } else {
2482                                         (*position)++;
2483                                 }}
2484                         }
2485                         return -1;
2486                 }
2487                 i++;
2488         }
2489
2490         return -2;
2491 }
2492
2493 /* Decoders of fields in extension headers, each function returns no of bytes from field */
2494
2495 /* GPRS:        9.60 v7.6.0, chapter
2496  * UMTS:        29.060 v4.0, chapter
2497  */
2498 static int
2499 decode_gtp_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2500
2501         guint8  cause;
2502
2503         cause = tvb_get_guint8(tvb, offset+1);
2504
2505         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_cause : hf_gtpv0_cause, tvb, offset, 2, cause);
2506
2507         return 2;
2508 }
2509
2510 /* GPRS:        9.60 v7.6.0, chapter 7.9.2
2511  * UMTS:        29.060 v4.0, chapter 7.7.2
2512  */
2513 static int
2514 decode_gtp_imsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2515
2516         guint8  imsi_val[8];
2517         gchar   *imsi_str;
2518
2519         tvb_memcpy(tvb, imsi_val, offset+1, 8);
2520         imsi_str = imsi_to_str (imsi_val);
2521
2522         proto_tree_add_string(tree, gtp_version ? hf_gtpv1_imsi : hf_gtpv0_imsi, tvb, offset, 9, imsi_str);
2523
2524         return 9;
2525 }
2526
2527 /* GPRS:        9.60 v7.6.0, chapter 7.9.3
2528  * UMTS:        29.060 v4.0, chapter 7.7.3
2529  * TODO: Add details about MCC, MNC, LAC, RAC (show each digit) ?
2530  */
2531 static int
2532 decode_gtp_rai(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2533
2534         proto_tree      *ext_tree_rai;
2535         proto_item      *te;
2536         guint8          byte[3];
2537
2538         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_RAI, gtp_val, "Unknown message"));
2539         ext_tree_rai = proto_item_add_subtree(te, ett_gtp_rai);
2540
2541 /*      tvb_memcpy (tvb, (guint8 *)&byte, offset + 1, 3); */
2542         byte[1] = tvb_get_guint8 (tvb, offset + 1);
2543         byte[2] = tvb_get_guint8 (tvb, offset + 2);
2544         byte[3] = tvb_get_guint8 (tvb, offset + 3);
2545
2546
2547         proto_tree_add_uint(ext_tree_rai, gtp_version ? hf_gtpv1_rai_mcc : hf_gtpv0_rai_mcc, tvb, offset+1, 2, (byte[1] & 0x0F) * 100 + ((byte[1] & 0xF0) >> 4) * 10  + (byte[2] & 0x0F ));
2548         proto_tree_add_uint(ext_tree_rai, gtp_version ? hf_gtpv1_rai_mnc : hf_gtpv0_rai_mnc, tvb, offset+2, 2, ((byte[3] & 0xF0) >> 4 ) * 10  + (byte[3] & 0x0F));
2549         proto_tree_add_uint(ext_tree_rai, gtp_version ? hf_gtpv1_rai_lac : hf_gtpv0_rai_lac, tvb, offset+4, 2, tvb_get_ntohs (tvb, offset+4));
2550         proto_tree_add_uint(ext_tree_rai, gtp_version ? hf_gtpv1_rai_rac : hf_gtpv0_rai_rac, tvb, offset+6, 1, tvb_get_guint8 (tvb, offset+6));
2551
2552         return 7;
2553 }
2554
2555 /* GPRS:        9.60 v7.6.0, chapter 7.9.4, page 39
2556  * UMTS:        29.060 v4.0, chapter 7.7.4, page 47
2557  */
2558 static int
2559 decode_gtp_tlli(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2560
2561         guint32 tlli;
2562
2563         tlli = tvb_get_ntohl(tvb, offset+1);
2564         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tlli : hf_gtpv0_tlli, tvb, offset, 5, tlli);
2565
2566         return 5;
2567 }
2568
2569 /* GPRS:        9.60 v7.6.0, chapter 7.9.5, page 39
2570  * UMTS:        29.060 v4.0, chapter 7.7.5, page 47
2571  */
2572 static int
2573 decode_gtp_ptmsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2574
2575         guint32 ptmsi;
2576
2577         ptmsi = tvb_get_ntohl(tvb, offset);
2578         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi : hf_gtpv0_ptmsi, tvb, offset, 5, ptmsi);
2579
2580         return 5;
2581 }
2582
2583 /* adjust - how many bytes before offset should be highlighted
2584  */
2585 static int
2586 decode_qos_gprs(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 adjust) {
2587
2588         guint8          spare1, delay, reliability, peak, spare2,  precedence, spare3, mean;
2589         proto_tree      *ext_tree_qos;
2590         proto_item      *te;
2591
2592         spare1 = tvb_get_guint8(tvb, offset) & 0xC0;
2593         delay = tvb_get_guint8(tvb, offset) & 0x38;
2594         reliability = tvb_get_guint8(tvb, offset) & 0x07;
2595         peak = tvb_get_guint8(tvb, offset+1) & 0xF0;
2596         spare2 = tvb_get_guint8(tvb, offset+1) & 0x08;
2597         precedence = tvb_get_guint8(tvb, offset+1) & 0x07;
2598         spare3 = tvb_get_guint8(tvb, offset+2) & 0xE0;
2599         mean = tvb_get_guint8(tvb, offset+2) & 0x1F;
2600
2601         te = proto_tree_add_text(tree, tvb, offset-adjust, 3+adjust, "%s: delay: %u, reliability: %u, peak: %u, precedence: %u, mean: %u",
2602                                                                         qos_str, delay, reliability, peak, precedence, mean);
2603         ext_tree_qos = proto_item_add_subtree(te, ett_gtp_qos);
2604
2605         if (adjust != 0) {
2606                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare1, tvb, offset, 1, spare1);
2607                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_delay, tvb, offset, 1, delay);
2608                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_reliability, tvb, offset, 1, reliability);
2609                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_peak, tvb, offset+1, 1, peak);
2610                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare2, tvb, offset+1, 1, spare2);
2611                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_precedence, tvb, offset+1, 1, precedence);
2612                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare3, tvb, offset+2, 1, spare3);
2613                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_mean, tvb, offset+2, 1, mean);
2614         }
2615
2616         return 3;
2617 }
2618
2619 /* GPRS:        9.60 v7.6.0, chapter 7.9.6, page 39
2620  *              4.08
2621  *              3.60
2622  * UMTS:        not present
2623  * TODO:        check if length is included: ETSI 4.08 vs 9.60
2624  */
2625 static int
2626 decode_gtp_qos_gprs(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2627
2628         return (1+decode_qos_gprs(tvb, offset+1, tree, "Quality of Service", 1));
2629
2630 }
2631
2632 /* GPRS:        9.60 v7.6.0, chapter 7.9.7, page 39
2633  * UMTS:        29.060 v4.0, chapter 7.7.6, page 47
2634  */
2635 static int
2636 decode_gtp_reorder(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2637
2638         guint8  reorder;
2639
2640         reorder = tvb_get_guint8(tvb, offset+1) & 0x01;
2641         proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_reorder : hf_gtpv0_reorder, tvb, offset, 2, reorder);
2642
2643         return 2;
2644 }
2645
2646 /* GPRS:        9.60 v7.6.0, chapter 7.9.8, page 40
2647  *              4.08 v7.1.2, chapter 10.5.3.1+
2648  * UMTS:        29.060 v4.0, chapter 7.7.7
2649  * TODO: Add blurb support by registering items in the protocol registration
2650  */
2651 static int
2652 decode_gtp_auth_tri(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2653
2654         proto_tree      *ext_tree_auth_tri;
2655         proto_item      *te;
2656
2657         te = proto_tree_add_text(tree, tvb, offset, 29, val_to_str(GTP_EXT_AUTH_TRI, gtp_val, "Unknown message"));
2658         ext_tree_auth_tri = proto_item_add_subtree(tree, ett_gtp_auth_tri);
2659
2660         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+1, 16));
2661         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+17, 4));
2662         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+21, 8));
2663
2664         return 1+16+4+8;
2665 }
2666
2667 /* GPRS:        9.60 v7.6.0, chapter 7.9.9, page 40
2668  *              9.02 v7.7.0, page 1090
2669  * UMTS:        29.060 v4.0, chapter 7.7.8, page 48
2670  *              29.002 v4.2.1, chapter 17.5, page 268
2671  */
2672 static int
2673 decode_gtp_map_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2674
2675         guint8  map_cause;
2676
2677         map_cause = tvb_get_guint8(tvb, offset+1);
2678         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_map_cause : hf_gtpv0_map_cause, tvb, offset, 2, map_cause);
2679
2680         return 2;
2681 }
2682
2683 /* GPRS:        9.60 v7.6.0, chapter 7.9.10, page 41
2684  * UMTS:        29.060 v4.0, chapter 7.7.9, page 48
2685  */
2686 static int
2687 decode_gtp_ptmsi_sig(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2688
2689         guint32 ptmsi_sig;
2690
2691         ptmsi_sig = tvb_get_ntoh24(tvb, offset+1);
2692         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi_sig : hf_gtpv0_ptmsi_sig, tvb, offset, 4, ptmsi_sig);
2693
2694         return 4;
2695 }
2696
2697 /* GPRS:        9.60 v7.6.0, chapter 7.9.11, page 41
2698  * UMTS:        29.060 v4.0, chapter 7.7.10, page 49
2699  */
2700 static int
2701 decode_gtp_ms_valid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2702
2703         guint8  ms_valid;
2704
2705         ms_valid = tvb_get_guint8(tvb, offset+1) & 0x01;
2706         proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_ms_valid : hf_gtpv0_ms_valid, tvb, offset, 2, ms_valid);
2707
2708         return 2;
2709 }
2710
2711 /* GPRS:        9.60 v7.6.0, chapter 7.9.12, page 41
2712  * UMTS:        29.060 v4.0, chapter 7.7.11, page 49
2713  */
2714 static int
2715 decode_gtp_recovery(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2716
2717         guint8  recovery;
2718
2719         recovery = tvb_get_guint8(tvb, offset+1);
2720         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_recovery : hf_gtpv0_recovery, tvb, offset, 2, recovery);
2721
2722         return 2;
2723 }
2724
2725 /* GPRS:        9.60 v7.6.0, chapter 7.9.13, page 42
2726  * UMTS:        29.060 v4.0, chapter 7.7.12, page 49
2727  */
2728 static int
2729 decode_gtp_sel_mode(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2730
2731         guint8  sel_mode;
2732
2733         sel_mode = tvb_get_guint8(tvb, offset+1) & 0x03;
2734         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_sel_mode : hf_gtpv0_sel_mode, tvb, offset, 2, sel_mode);
2735
2736         return 2;
2737 }
2738
2739 /* GPRS:        9.60 v7.6.0, chapter 7.9.14, page 42
2740  * UMTS:        29.060 v4.0, chapter 7.7.13, page 50
2741  */
2742 static int
2743 decode_gtp_16(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2744
2745         guint16 ext_flow_label;
2746         guint32 teid_data;
2747
2748         switch (gtp_version) {
2749                 case 0:
2750                         ext_flow_label = tvb_get_ntohs(tvb, offset+1);
2751                         proto_tree_add_uint(tree, hf_gtpv0_ext_flow_label, tvb, offset, 3, ext_flow_label);
2752
2753                         return 3;
2754                 case 1:
2755                         teid_data = tvb_get_ntohl(tvb, offset+1);
2756                         proto_tree_add_uint(tree, hf_gtpv1_teid_data, tvb, offset, 5, teid_data);
2757
2758                         return 5;
2759                 default:
2760                         proto_tree_add_text(tree, tvb, offset, 1, "Flow label/TEID Data I : GTP version not supported");
2761
2762                         return 3;
2763         }
2764 }
2765
2766 /* GPRS:        9.60 v7.6.0, chapter 7.9.15, page 42
2767  * UMTS:        29.060 v4.0, chapter 7.7.14, page 42
2768  */
2769 static int
2770 decode_gtp_17(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2771
2772         guint16         flow_sig;
2773         guint32         teid_cp;
2774
2775         switch (gtp_version) {
2776                 case 0:
2777                         flow_sig = tvb_get_ntohs(tvb, offset+1);
2778                         proto_tree_add_uint(tree, hf_gtpv0_flow_sig, tvb, offset, 3, flow_sig);
2779
2780                         return 3;
2781                 case 1:
2782                         teid_cp = tvb_get_ntohl(tvb, offset+1);
2783                         proto_tree_add_uint(tree, hf_gtpv1_teid_cp, tvb, offset, 5, teid_cp);
2784
2785                         return 5;
2786                 default:
2787                         proto_tree_add_text(tree, tvb, offset, 1, "Flow label signalling/TEID control plane : GTP version not supported");
2788
2789                         return 3;
2790         }
2791 }
2792
2793 /* GPRS:        9.60 v7.6.0, chapter 7.9.16, page 42
2794  * UMTS:        29.060 v4.0, chapter 7.7.15, page 51
2795  */
2796 static int
2797 decode_gtp_18(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2798
2799         guint16         flow_ii;
2800         guint32         teid_ii;
2801         proto_tree      *ext_tree_flow_ii;
2802         proto_item      *te;
2803
2804         switch (gtp_version) {
2805                 case 0:
2806                         te = proto_tree_add_text(tree, tvb, offset, 4, val_to_str(GTP_EXT_FLOW_II, gtp_val, "Unknown message"));
2807                         ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
2808
2809                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
2810
2811                         flow_ii = tvb_get_ntohs(tvb, offset+2);
2812                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_flow_ii, tvb, offset+2, 2, flow_ii);
2813
2814                         return 4;
2815                 case 1:
2816                         te = proto_tree_add_text(tree, tvb, offset, 6, val_to_str(GTP_EXT_TEID_II, gtp_val, "Unknown message"));
2817                         ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
2818
2819                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
2820
2821
2822                         teid_ii = tvb_get_ntohl(tvb, offset+2);
2823                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_teid_ii, tvb, offset+2, 4, teid_ii);
2824
2825                         return 6;
2826                 default:
2827                         proto_tree_add_text(tree, tvb, offset, 1, "Flow data II/TEID Data II : GTP Version not supported");
2828
2829                         return 4;
2830         }
2831 }
2832
2833 /* GPRS:        9.60 v7.6.0, chapter 7.9.16A, page 43
2834  * UMTS:        29.060 v4.0, chapter 7.7.16, page 51
2835  * Check if all ms_reason types are included
2836  */
2837 static int
2838 decode_gtp_19(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2839
2840         guint8          field19;
2841
2842         field19 = tvb_get_guint8(tvb, offset+1);
2843
2844         switch (gtp_version) {
2845                 case 0:
2846                         proto_tree_add_uint(tree, hf_gtpv0_ms_reason, tvb, offset, 2, field19);
2847
2848                         break;
2849                 case 1:
2850                         proto_tree_add_boolean(tree, hf_gtpv1_tear_ind, tvb, offset, 2, field19 & 0x01);
2851
2852                         break;
2853                 default:
2854                         proto_tree_add_text(tree, tvb, offset, 1, "Information Element Type = 19 : GTP Version not supported");
2855
2856                         break;
2857         }
2858
2859         return 2;
2860 }
2861
2862 /* GPRS:        not present
2863  * UMTS:        29.060 v4.0, chapter 7.7.17, page 51
2864  */
2865 static int
2866 decode_gtp_nsapi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2867
2868         guint8          nsapi;
2869
2870         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2871         proto_tree_add_uint(tree, hf_gtpv1_nsapi, tvb, offset, 2, nsapi);
2872
2873         return 2;
2874 }
2875
2876 /* GPRS:        not present
2877  * UMTS:        29.060 v4.0, chapter 7.7.18, page 52
2878  */
2879 static int
2880 decode_gtp_ranap_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2881
2882         guint8          ranap;
2883
2884         ranap = tvb_get_guint8(tvb, offset+1);
2885
2886         if(ranap > 0 && ranap <=64)
2887         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (Radio Network Layer Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2888
2889         if(ranap > 64 && ranap <=80)
2890         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (Transport Layer Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2891
2892         if(ranap > 80 && ranap <=96)
2893         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (NAS Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2894
2895         if(ranap > 96 && ranap <=112)
2896         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (Protocol Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2897
2898         if(ranap > 112 && ranap <=128)
2899         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (Miscellaneous Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2900
2901         if(ranap > 128 && ranap <=255)
2902         proto_tree_add_uint_format(tree, hf_gtpv1_ranap_cause, tvb, offset, 2, ranap, "%s (Non-standard Cause) : %s (%u)", val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap);
2903
2904         return 2;
2905 }
2906
2907 /* GPRS:        not present
2908  * UMTS:        29.060 v4.0, chapter 7.7.19, page 52
2909  */
2910 static int
2911 decode_gtp_rab_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2912
2913         guint8          nsapi, dl_pdcp_seq, ul_pdcp_seq;
2914         guint16         dl_gtpu_seq, ul_gtpu_seq;
2915         proto_tree      *ext_tree_rab_cntxt;
2916         proto_item      *te;
2917
2918         te = proto_tree_add_text(tree, tvb, offset, 8, val_to_str(GTP_EXT_RAB_CNTXT, gtp_val, "Unknown message"));
2919         ext_tree_rab_cntxt = proto_item_add_subtree(te, ett_gtp_rab_cntxt);
2920
2921         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2922         dl_gtpu_seq = tvb_get_ntohs(tvb, offset+2);
2923         ul_gtpu_seq = tvb_get_ntohs(tvb, offset+4);
2924         dl_pdcp_seq = tvb_get_guint8(tvb, offset+6);
2925         ul_pdcp_seq = tvb_get_guint8(tvb, offset+7);
2926
2927         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
2928         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_dn, tvb, offset+2, 2, dl_gtpu_seq);
2929         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_up, tvb, offset+4, 2, ul_gtpu_seq);
2930         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_dn, tvb, offset+6, 1, dl_pdcp_seq);
2931         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_up, tvb, offset+7, 1, ul_pdcp_seq);
2932
2933         return 8;
2934 }
2935
2936
2937 /* GPRS:        not present
2938  * UMTS:        29.060 v4.0, chapter 7.7.20, page 53
2939  */
2940 static int
2941 decode_gtp_rp_sms(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2942
2943         guint8          rp_sms;
2944
2945         rp_sms = tvb_get_guint8(tvb, offset+1) & 0x07;
2946         proto_tree_add_uint(tree, hf_gtpv1_rp_sms, tvb, offset, 2, rp_sms);
2947
2948         return 2;
2949 }
2950
2951 /* GPRS:        not present
2952  * UMTS:        29.060 v4.0, chapter 7.7.21, page 53
2953  */
2954 static int
2955 decode_gtp_rp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2956
2957         proto_tree      *ext_tree_rp;
2958         proto_item      *te;
2959         guint8          nsapi, rp, spare;
2960
2961         nsapi = tvb_get_guint8(tvb, offset+1) & 0xF0;
2962         spare = tvb_get_guint8(tvb, offset+1) & 0x08;
2963         rp = tvb_get_guint8(tvb, offset+1) & 0x07;
2964
2965         te = proto_tree_add_uint_format(tree, hf_gtpv1_rp, tvb, offset, 2, rp, "Radio Priority for NSAPI(%u) : %u", nsapi, rp);
2966         ext_tree_rp = proto_item_add_subtree(tree, ett_gtp_rp);
2967
2968         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_nsapi, tvb, offset+1, 1, nsapi);
2969         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_spare, tvb, offset+1, 1, spare);
2970         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp, tvb, offset+1, 1, rp);
2971
2972         return 2;
2973 }
2974
2975 /* GPRS:        not present
2976  * UMTS:        29.060 v4.0, chapter 7.7.22, page 53
2977  */
2978 static int
2979 decode_gtp_pkt_flow_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
2980
2981         proto_tree      *ext_tree_pkt_flow_id;
2982         proto_item      *te;
2983         guint8          nsapi, pkt_flow_id;
2984
2985         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2986         pkt_flow_id = tvb_get_guint8(tvb, offset+2);
2987
2988         te = proto_tree_add_uint_format(tree, hf_gtpv1_pkt_flow_id, tvb, offset, 3, pkt_flow_id, "Packet Flow ID for NSAPI(%u) : %u", nsapi, pkt_flow_id);
2989         ext_tree_pkt_flow_id = proto_item_add_subtree(tree, ett_gtp_pkt_flow_id);
2990
2991         proto_tree_add_uint(ext_tree_pkt_flow_id, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
2992         proto_tree_add_uint_format(ext_tree_pkt_flow_id, hf_gtpv1_pkt_flow_id, tvb, offset+2, 1, pkt_flow_id, "%s : %u", val_to_str(GTP_EXT_PKT_FLOW_ID, gtp_val, "Unknown message"), pkt_flow_id);
2993
2994         return 3;
2995 }
2996
2997 /* GPRS:        not present
2998  * UMTS:        29.060 v4.0, chapter 7.7.23, page 53
2999  * TODO: Differenciate these uints?
3000  */
3001 static int
3002 decode_gtp_chrg_char(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3003
3004         guint16         chrg_char;
3005         proto_item      *te;
3006         proto_tree      *ext_tree_chrg_char;
3007
3008         chrg_char = tvb_get_ntohs(tvb, offset+1);
3009
3010         te = proto_tree_add_text(tree, tvb, offset, 3, "%s: %x", val_to_str(GTP_EXT_CHRG_CHAR, gtp_val, "Unknown message"), chrg_char);
3011         ext_tree_chrg_char = proto_item_add_subtree(te, ett_gtp_chrg_char);
3012
3013         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_s, tvb, offset+1, 2, chrg_char);
3014         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_n, tvb, offset+1, 2, chrg_char);
3015         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_p, tvb, offset+1, 2, chrg_char);
3016         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_f, tvb, offset+1, 2, chrg_char);
3017         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_h, tvb, offset+1, 2, chrg_char);
3018         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_r, tvb, offset+1, 2, chrg_char);
3019
3020         return 3;
3021 }
3022
3023 /* GPRS:        not present
3024  * UMTS:        29.060 v4.0, chapter 7.7.24, page
3025  */
3026 static int
3027 decode_gtp_trace_ref(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3028
3029         guint16         trace_ref;
3030
3031         trace_ref = tvb_get_ntohs(tvb, offset+1);
3032
3033         proto_tree_add_uint(tree, hf_gtpv1_trace_ref, tvb, offset, 3, trace_ref);
3034
3035         return 3;
3036 }
3037
3038 /* GPRS:        not present
3039  * UMTS:        29.060 v4.0, chapter 7.7.25, page
3040  */
3041 static int
3042 decode_gtp_trace_type(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3043
3044         guint16         trace_type;
3045
3046         trace_type = tvb_get_ntohs(tvb, offset+1);
3047
3048         proto_tree_add_uint(tree, hf_gtpv1_trace_type, tvb, offset, 3, trace_type);
3049
3050         return 3;
3051 }
3052
3053 /* GPRS:        9.60 v7.6.0, chapter 7.9.16A
3054  * UMTS:        29.060 v4.0, chapter 7.7.25A, page
3055  */
3056 static int
3057 decode_gtp_ms_reason(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3058
3059         guint8          reason;
3060
3061         reason = tvb_get_guint8(tvb, offset+1);
3062
3063         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ms_reason : hf_gtpv0_ms_reason, tvb, offset, 2, reason);
3064
3065         return 2;
3066 }
3067
3068
3069 /* GPRS:        12.15 v7.6.0, chapter 7.3.3, page 45
3070  * UMTS:        33.015
3071  */
3072 static int
3073 decode_gtp_tr_comm(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3074
3075         guint8  tr_command;
3076
3077         tr_command = tvb_get_guint8(tvb, offset+1);
3078
3079         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tr_comm : hf_gtpv0_tr_comm, tvb, offset, 2, tr_command);
3080
3081         return 2;
3082 }
3083
3084 /* GPRS:        9.60 v7.6.0, chapter 7.9.17, page 43
3085  * UMTS:        29.060 v4.0, chapter 7.7.26, page 55
3086  */
3087 static int
3088 decode_gtp_chrg_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3089
3090         guint32 chrg_id;
3091
3092         chrg_id = tvb_get_ntohl(tvb, offset+1);
3093         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_chrg_id : hf_gtpv0_chrg_id, tvb, offset, 5, chrg_id);
3094
3095         return 5;
3096 }
3097
3098 /* GPRS:        9.60 v7.6.0, chapter 7.9.18, page 43
3099  * UMTS:        29.060 v4.0, chapter 7.7.27, page 55
3100  */
3101 static int
3102 decode_gtp_user_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3103
3104         guint16         length;
3105         guint8          pdp_typ, pdp_org;
3106         guint32         addr_ipv4;
3107         struct          e_in6_addr addr_ipv6;
3108         proto_tree      *ext_tree_user;
3109         proto_item      *te;
3110
3111
3112         length = tvb_get_ntohs(tvb, offset+1);
3113         pdp_org = tvb_get_guint8(tvb, offset+3) & 0x0F;
3114         pdp_typ = tvb_get_guint8(tvb, offset+4);
3115
3116         te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s (%s/%s)",
3117             val_to_str(GTP_EXT_USER_ADDR, gtp_val, "Unknown message"),
3118             val_to_str(pdp_org, pdp_org_type, "Unknown PDP Organization"),
3119             val_to_str(pdp_typ, pdp_type, "Unknown PDP Type"));
3120         ext_tree_user = proto_item_add_subtree(te, ett_gtp_user);
3121
3122         proto_tree_add_text(ext_tree_user, tvb, offset+1, 2, "Length : %u", length);
3123         proto_tree_add_uint(ext_tree_user, gtp_version ? hf_gtpv1_user_addr_pdp_org : hf_gtpv0_user_addr_pdp_org, tvb, offset+3, 1, pdp_org);
3124         proto_tree_add_uint(ext_tree_user, gtp_version ? hf_gtpv1_user_addr_pdp_type : hf_gtpv0_user_addr_pdp_type, tvb, offset+4, 1, pdp_typ);
3125
3126         if (length == 2) {
3127                 if (pdp_org == 0 && pdp_typ == 1)
3128                         proto_item_append_text(te, " (Point to Point Protocol)");
3129                 else if (pdp_typ == 2)
3130                         proto_item_append_text(te, " (Octet Stream Protocol)");
3131         } else if (length > 2) {
3132                 switch (pdp_typ) {
3133                         case 0x21:
3134                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+5, sizeof addr_ipv4);
3135                                 proto_tree_add_ipv4(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv4 : hf_gtpv0_user_ipv4, tvb, offset+5, 4, addr_ipv4);
3136                                 proto_item_append_text(te, " : %s", ip_to_str((guint8 *)&addr_ipv4));
3137                                 break;
3138                         case 0x57:
3139                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+5, sizeof addr_ipv6);
3140                                 proto_tree_add_ipv6(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv6 : hf_gtpv0_user_ipv6, tvb, offset+5, 16, (guint8 *)&addr_ipv6);
3141                                 proto_item_append_text(te, " : %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3142                                 break;
3143                 }
3144         } else
3145                 proto_item_append_text(te, " : empty PDP Address");
3146
3147         return 3+length;
3148 }
3149
3150 static int
3151 decode_triplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count) {
3152
3153         proto_tree      *ext_tree_trip;
3154         proto_item      *te_trip;
3155         guint16         i;
3156
3157         for (i=0;i<count;i++) {
3158                 te_trip = proto_tree_add_text(tree, tvb, offset+i*28, 28, "Triplet no%x", i);
3159                 ext_tree_trip = proto_item_add_subtree(te_trip, ett_gtp_trip);
3160
3161                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+i*28, 16));
3162                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+i*28+16, 4));
3163                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+i*28+20, 8));
3164         }
3165
3166         return count*28;
3167 }
3168
3169 /* adjust - how many bytes before quintuplet should be highlighted
3170  */
3171 static int
3172 decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, guint8 adjust) {
3173
3174         proto_tree      *ext_tree_quint;
3175         proto_item      *te_quint;
3176         guint16         q_len, xres_len, auth_len, q_offset, i;
3177
3178         q_offset = 0;
3179
3180         for (i=0;i<count;i++) {
3181
3182                 offset = offset + q_offset;
3183
3184                 q_len = tvb_get_ntohs(tvb, offset);
3185
3186                 te_quint = proto_tree_add_text(tree, tvb, offset-adjust, q_len+adjust, "Quintuplet #%x", i);
3187                 ext_tree_quint = proto_item_add_subtree(te_quint, ett_gtp_quint);
3188
3189                 proto_tree_add_text(ext_tree_quint, tvb, offset, 2, "Length: %x", q_len);
3190                 proto_tree_add_text(ext_tree_quint, tvb, offset+2, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+2, 16));
3191                 xres_len = tvb_get_ntohs(tvb, offset+18);
3192                 proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %u", xres_len);
3193                 proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES: %s", tvb_bytes_to_str(tvb, offset+20, xres_len));
3194                 proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %s", tvb_bytes_to_str(tvb, offset+20+xres_len, 16));
3195                 proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %s", tvb_bytes_to_str(tvb, offset+36+xres_len, 16));
3196                 auth_len = tvb_get_ntohs(tvb, offset+52+xres_len);
3197                 proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %u", auth_len);
3198                 proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH: %s", tvb_bytes_to_str(tvb, offset+54+xres_len, auth_len));
3199
3200                 q_offset = q_offset + q_len + 2;
3201         }
3202
3203         return q_offset;
3204 }
3205
3206 /* GPRS:        9.60 v7.6.0, chapter 7.9.19 page
3207  * UMTS:        29.060 v4.0, chapter 7.7.28 page 57
3208  * TODO:        - check if for quintuplets first 2 bytes are length, according to AuthQuint
3209  *              - finish displaying last 3 parameters
3210  */
3211 static int
3212 decode_gtp_mm_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3213
3214         guint16         length, quint_len, net_cap, con_len;
3215         guint8          cksn, count, sec_mode, cipher, trans_id, proto_disc, message, drx_split, drx_len, drx_ccch, non_drx_timer;
3216         proto_tree      *ext_tree_mm;
3217         proto_item      *te;
3218
3219         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_MM_CNTXT, gtp_val, "Unknown message"));
3220         ext_tree_mm = proto_item_add_subtree(te, ett_gtp_mm);
3221
3222         length = tvb_get_ntohs(tvb, offset+1);
3223         if (length < 1) return 3;
3224
3225         cksn = tvb_get_guint8(tvb, offset+3) & 0x07;
3226         sec_mode = (tvb_get_guint8(tvb, offset+4) >> 6) & 0x03;
3227         count = (tvb_get_guint8(tvb, offset+4) >> 3) & 0x07;
3228         cipher = tvb_get_guint8(tvb, offset+4) & 0x07;
3229
3230         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 2, "Length: %x", length);
3231         proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Ciphering Key Sequence Number: %u", cksn);
3232         if (gtp_version != 0) {
3233                 proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Security type: %u", sec_mode);
3234         } else {
3235                 sec_mode = 1;
3236         }
3237
3238         proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "No of triplets: %u", count);
3239
3240         switch (sec_mode) {
3241                 case 0:
3242                         if (cipher == 0) {
3243                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3244                         } else {
3245                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3246                         }
3247                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16));
3248                         proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16));
3249                         quint_len = tvb_get_ntohs(tvb, offset+37);
3250                         proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
3251
3252                         offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
3253
3254
3255                         break;
3256                 case 1:
3257                         if (cipher == 0) {
3258                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3259                         } else {
3260                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3261                         }
3262                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8));
3263
3264                         offset = offset + decode_triplet(tvb, offset+13, ext_tree_mm, count) + 13;
3265
3266                         break;
3267                 case 2:
3268                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16));
3269                         proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16));
3270                         quint_len = tvb_get_ntohs(tvb, offset+37);
3271                         proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
3272
3273                         offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
3274
3275                         break;
3276                 case 3:
3277                         if (cipher == 0) {
3278                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3279                         } else {
3280                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3281                         }
3282                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8));
3283                         quint_len = tvb_get_ntohs(tvb, offset+13);
3284                         proto_tree_add_text(ext_tree_mm, tvb, offset+13, 2, "Quintuplets length: %x", quint_len);
3285
3286                         offset = offset + decode_quintuplet(tvb, offset+15, ext_tree_mm, count, 0) + 15;
3287
3288                         break;
3289                 default:
3290                         break;
3291         }
3292
3293
3294         drx_split = tvb_get_guint8(tvb, offset);
3295         drx_len = (tvb_get_guint8(tvb, offset+1) >> 4) & 0x0F;
3296         drx_ccch = (tvb_get_guint8(tvb, offset+1) >> 3) & 0x01;
3297         non_drx_timer = tvb_get_guint8(tvb, offset+1) & 0x07;
3298
3299         net_cap = tvb_get_ntohs(tvb, offset+2);
3300         con_len = tvb_get_ntohs(tvb, offset+4);
3301
3302         proto_tree_add_text(ext_tree_mm, tvb, offset, 1, "DRX: split PG cycle code: %u", drx_split);
3303         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: CN specific DRX cycle length coefficient: %u", drx_len);
3304         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: split PG cycle on CCCH supported by MS: %s", yesno[drx_ccch]);
3305         if (non_drx_timer == 0) {
3306                 proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: no non-DRX mode after transfer state");
3307         } else {
3308                 proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: max sec non-DRX mode after transfer state:  2^%u", non_drx_timer-1);
3309         }
3310
3311         proto_tree_add_text(ext_tree_mm, tvb, offset+2, 2, "MS network capability: %u", net_cap);
3312         proto_tree_add_text(ext_tree_mm, tvb, offset+4, 2, "Container length: %u", con_len);
3313
3314         if (con_len > 0) {
3315                 trans_id = (tvb_get_guint8(tvb, offset+6) >> 4) & 0x0F;
3316                 proto_disc = tvb_get_guint8(tvb, offset+6) & 0x0F;
3317                 message = tvb_get_guint8(tvb, offset+7);
3318         }
3319
3320         return 3+length;
3321 }
3322
3323 /* Function to extract the value of an hexadecimal octet. Only the lower
3324  * nybble will be non-zero in the output.
3325  * */
3326 static guint8 hex2dec (guint8 x)
3327 {
3328         if ((x >= 'a') && (x <= 'f'))
3329                 x = x - 'a' + 10;
3330         else if ((x >= 'A') && (x <= 'F'))
3331                 x = x - 'A' + 10;
3332         else if ((x >= '0') && (x <= '9'))
3333                 x = x - '0';
3334         else
3335                 x = 0;
3336         return x;
3337 }
3338
3339 /* Wrapper function to add UTF-8 decoding for QoS attributes in
3340  * RADIUS messages.
3341  * */
3342 static guint8 wrapped_tvb_get_guint8(
3343                                          tvbuff_t *tvb, int offset, int type)
3344 {
3345         if (type == 2)
3346                 return (hex2dec(tvb_get_guint8(tvb, offset)) << 4
3347                                         | hex2dec(tvb_get_guint8(tvb, offset + 1)));
3348         else
3349                 return tvb_get_guint8(tvb, offset);
3350 }
3351
3352  /* WARNING : actually length is coded on 2 octets for QoS profile but on 1 octet for PDP Context!
3353   * so type means length of length :-)
3354   *
3355   * WARNING :) type does not mean length of length any more... see below for
3356   * type = 3!
3357  */
3358 int
3359 decode_qos_umts(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 type) {
3360
3361         guint8          length;
3362         guint8          al_ret_priority;
3363         guint8          delay, reliability, peak, precedence, mean, spare1, spare2, spare3;
3364         guint8          traf_class, del_order, del_err_sdu;
3365         guint8          max_sdu_size, max_ul, max_dl;
3366         guint8          res_ber, sdu_err_ratio;
3367         guint8          trans_delay, traf_handl_prio;
3368         guint8          guar_ul, guar_dl;
3369         proto_tree      *ext_tree_qos;
3370         proto_item      *te;
3371         int             mss, mu, md, gu, gd;
3372
3373         /* Will keep if the input is UTF-8 encoded (as in RADIUS messages).
3374          * If 1, input is *not* UTF-8 encoded (i.e. each input octet corresponds
3375          * to one byte to be dissected).
3376          * If 2, input is UTF-8 encoded (i.e. each *couple* of input octets
3377          * corresponds to one byte to be dissected)
3378          * */
3379         guint8      utf8_type = 1;
3380
3381         /* In RADIUS messages the QoS has a version field of two octets prepended.
3382          * As of 29.061 v.3.a.0, there is an hyphen between "Release Indicator" and
3383          * <release specific QoS IE UTF-8 encoding>. Even if it sounds rather
3384          * inconsistent and unuseful, I will check hyphen presence here and
3385          * will signal its presence.
3386          * */
3387         guint8          version_buffer[2];
3388         guint8      hyphen;
3389
3390         /* Will keep the value that will be returned
3391          * */
3392         int             retval = 0;
3393
3394         switch (type) {
3395                 case 1:
3396                         length = tvb_get_guint8 (tvb, offset);
3397                         te = proto_tree_add_text (tree, tvb, offset, length + 1, "%s", qos_str);
3398                         ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
3399                         proto_tree_add_text (ext_tree_qos, tvb, offset, 1, "Length: %u", length);
3400                         offset++;
3401                         retval = length + 1;
3402                         break;
3403                 case 2:
3404                         length = tvb_get_ntohs (tvb, offset + 1);
3405                         te = proto_tree_add_text(tree, tvb, offset, length + 3, "%s", qos_str);
3406                         ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
3407                         proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Length: %u", length);
3408                         offset += 3;            /* +1 because of first 0x86 byte for UMTS QoS */
3409                         retval = length + 3;
3410                         break;
3411                 case 3:
3412                         /* For QoS inside RADIUS Client messages from GGSN */
3413                         utf8_type = 2;
3414
3415                         /* The field in the RADIUS message starts one byte before :) */
3416                         length = tvb_get_guint8 (tvb, offset);
3417                         te = proto_tree_add_text (tree, tvb, offset - 1, length, "%s", qos_str);
3418
3419                         ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
3420                         version_buffer[0] = tvb_get_guint8(tvb, offset + 1);
3421                         version_buffer[1] = tvb_get_guint8(tvb, offset + 2);
3422                         proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Version: %c%c", version_buffer[0], version_buffer[1]);
3423
3424                         /* Hyphen handling */
3425                         hyphen = tvb_get_guint8(tvb, offset + 3);
3426                         if (hyphen == ((guint8) '-'))
3427                         {
3428                                 /* Hyphen is present, put in protocol tree */
3429                                 proto_tree_add_text (ext_tree_qos, tvb, offset + 3, 1, "Hyphen separator: -");
3430                                 offset++; /* "Get rid" of hyphen */
3431                         }
3432
3433                         /* Now, we modify offset here and in order to use type later
3434                          * effectively.*/
3435                         offset += 2;
3436                         retval = length + 3;      /* Actually, will be ignored. */
3437                         break;
3438                 default:
3439                         /* XXX - what should we do with the length here? */
3440                         length = 0;
3441                         retval = 0;
3442                         ext_tree_qos = NULL;
3443                         break;
3444         }
3445
3446         /* In RADIUS messages there is no allocation-retention priority
3447          * so I don't need to wrap the following call to tvb_get_guint8
3448          * */
3449         al_ret_priority = tvb_get_guint8 (tvb, offset);
3450
3451         /* All calls are wrapped to take into account the possibility that the
3452          * input is UTF-8 encoded. If utf8_type is equal to 1, the final value
3453          * of the offset will be the same as in the previous version of this
3454          * dissector, and the wrapped function will serve as a dumb wrapper;
3455          * otherwise, if utf_8_type is 2, the offset is correctly shifted by
3456          * two bytes for needed shift, and the wrapped function will unencode
3457          * two values from the input.
3458          * */
3459         spare1 = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0xC0;
3460         delay = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x38;
3461         reliability = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x07;
3462         peak = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0xF0;
3463         spare2 = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x08;
3464         precedence = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x07;
3465         spare3 = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0xE0;
3466         mean = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0x1F;
3467
3468         /* In RADIUS messages there is no allocation-retention priority */
3469         if (type != 3)
3470                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_al_ret_priority, tvb, offset, 1, al_ret_priority);
3471
3472         /* All additions must take care of the fact that QoS fields in RADIUS
3473          * messages are UTF-8 encoded, so we have to use the same trick as above.
3474          * */
3475         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare1, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, spare1);
3476         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_delay, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, delay);
3477         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_reliability, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, reliability);
3478         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_peak, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, peak);
3479         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare2, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, spare2);
3480         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_precedence, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, precedence);
3481         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare3, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, spare3);
3482         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_mean, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, mean);
3483
3484         if (length > 4) {
3485
3486                 /* See above for the need of wrapping
3487                  * */
3488                 traf_class = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0xE0;
3489                 del_order = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x18;
3490                 del_err_sdu = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x07;
3491                 max_sdu_size = wrapped_tvb_get_guint8(tvb, offset+(5 - 1) * utf8_type + 1, utf8_type);
3492                 max_ul = wrapped_tvb_get_guint8(tvb, offset+(6 - 1) * utf8_type + 1, utf8_type);
3493                 max_dl = wrapped_tvb_get_guint8(tvb, offset+(7 - 1) * utf8_type + 1, utf8_type);
3494                 res_ber = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0xF0;
3495                 sdu_err_ratio = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0x0F;
3496                 trans_delay = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0xFC;
3497                 traf_handl_prio = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0x03;
3498                 guar_ul = wrapped_tvb_get_guint8(tvb, offset+(10 - 1) * utf8_type + 1, utf8_type);
3499                 guar_dl = wrapped_tvb_get_guint8(tvb, offset+(11 - 1) * utf8_type + 1, utf8_type);
3500
3501                 /* See above comments for the changes
3502                  * */
3503                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_class, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, traf_class);
3504                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_order, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_order);
3505                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_err_sdu, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_err_sdu);
3506                 if (max_sdu_size == 0 || max_sdu_size > 150)
3507                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, max_sdu_size);
3508                 if (max_sdu_size > 0 && max_sdu_size <= 150) {
3509                         mss = max_sdu_size*10;
3510                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, mss, "Maximum SDU size : %u octets", mss);
3511                 }
3512
3513                 if(max_ul == 0 || max_ul == 255)
3514                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul);
3515                 if(max_ul > 0 && max_ul <= 63)
3516                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul, "Maximum bit rate for uplink : %u kbps", max_ul);
3517                 if(max_ul > 63 && max_ul <=127) {
3518                         mu = 64 + ( max_ul - 64 ) * 8;
3519                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu);
3520                 }
3521
3522                 if(max_ul > 127 && max_ul <=254) {
3523                         mu = 576 + ( max_ul - 128 ) * 64;
3524                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu);
3525                 }
3526
3527                 if(max_dl == 0 || max_dl == 255)
3528                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl);
3529                 if(max_dl > 0 && max_dl <= 63)
3530                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl, "Maximum bit rate for downlink : %u kbps", max_dl);
3531                 if(max_dl > 63 && max_dl <=127) {
3532                         md = 64 + ( max_dl - 64 ) * 8;
3533                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md);
3534                 }
3535                 if(max_dl > 127 && max_dl <=254) {
3536                         md = 576 + ( max_dl - 128 ) * 64;
3537                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md);
3538                 }
3539
3540                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_res_ber, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, res_ber);
3541                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_sdu_err_ratio, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, sdu_err_ratio);
3542                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_trans_delay, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, trans_delay);
3543                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_handl_prio, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, traf_handl_prio);
3544
3545                 if(guar_ul == 0 || guar_ul == 255)
3546                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul);
3547                 if(guar_ul > 0 && guar_ul <= 63)
3548                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul, "Guaranteed bit rate for uplink : %u kbps", guar_ul);
3549                 if(guar_ul > 63 && guar_ul <=127) {
3550                         gu = 64 + ( guar_ul - 64 ) * 8;
3551                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
3552                 }
3553                 if(guar_ul > 127 && guar_ul <=254) {
3554                         gu = 576 + ( guar_ul - 128 ) * 64;
3555                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
3556                 }
3557
3558                 if(guar_dl == 0 || guar_dl == 255)
3559                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl);
3560                 if(guar_dl > 0 && guar_dl <= 63)
3561                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl, "Guaranteed bit rate for downlink : %u kbps", guar_dl);
3562                 if(guar_dl > 63 && guar_dl <=127) {
3563                         gd = 64 + ( guar_dl - 64 ) * 8;
3564                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
3565                 }
3566                 if(guar_dl > 127 && guar_dl <=254) {
3567                         gd = 576 + ( guar_dl - 128 ) * 64;
3568                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
3569                 }
3570
3571         }
3572
3573         return retval;
3574 }
3575
3576 static void
3577 decode_apn(tvbuff_t *tvb, int offset, guint16 length, proto_tree *tree) {
3578
3579         gchar   *apn = NULL;
3580         guint8  name_len, tmp;
3581
3582         if (length > 0) {
3583                 apn = g_malloc (length + 1);
3584                 name_len = tvb_get_guint8 (tvb, offset);
3585
3586                 if (name_len < 0x20) {
3587                         tvb_memcpy (tvb, apn, offset + 1, length);
3588                         for (;;) {
3589                                 if (name_len >= length - 1) break;
3590                                 tmp = name_len;
3591                                 name_len = name_len + apn[tmp] + 1;
3592                                 apn[tmp] = '.';
3593                         }
3594                 } else {
3595                         tvb_memcpy (tvb, apn, offset, length);
3596                 }
3597
3598                 apn[length-1] = '\0';
3599                 proto_tree_add_string(tree, gtp_version ? hf_gtpv1_apn : hf_gtpv0_apn, tvb, offset, length, apn);
3600                 g_free(apn);
3601         }
3602 }
3603
3604 /* GPRS:        9.60 v7.6.0, chapter 7.9.20
3605  * UMTS:        29.060 v4.0, chapter 7.7.29
3606  * TODO:        unify addr functions
3607  */
3608 static int
3609 decode_gtp_pdp_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3610
3611         guint8          ggsn_addr_len, apn_len, trans_id, vaa, order, nsapi, sapi, pdu_send_no, pdu_rec_no, pdp_cntxt_id,
3612                         pdp_type_org, pdp_type_num, pdp_addr_len;
3613         guint16         length, sn_down, sn_up, up_flow;
3614         guint32         addr_ipv4, up_teid, up_teid_cp;
3615         struct  e_in6_addr addr_ipv6;
3616         proto_tree      *ext_tree_pdp;
3617         proto_item      *te;
3618
3619         length = tvb_get_ntohs(tvb, offset+1);
3620
3621         te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_PDP_CNTXT, gtp_val, "Unknown message"));
3622         ext_tree_pdp = proto_item_add_subtree(te, ett_gtp_pdp);
3623
3624         vaa = (tvb_get_guint8(tvb, offset+3) >> 6) & 0x01;
3625         order = (tvb_get_guint8(tvb, offset+3) >> 4) & 0x01;
3626         nsapi =  tvb_get_guint8(tvb, offset+3) & 0x0F;
3627         sapi = tvb_get_guint8(tvb, offset+4) & 0x0F;
3628
3629         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "VPLMN address allowed: %s", yesno[vaa]);
3630         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "Reordering required: %s", yesno[order]);
3631         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "NSAPI: %u", nsapi);
3632         proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "SAPI: %u", sapi);
3633
3634         switch (gtp_version) {
3635                 case 0:
3636                         decode_qos_gprs(tvb, offset+5, ext_tree_pdp, "QoS subscribed", 0);
3637                         decode_qos_gprs(tvb, offset+8, ext_tree_pdp, "QoS requested", 0);
3638                         decode_qos_gprs(tvb, offset+11, ext_tree_pdp, "QoS negotiated", 0);
3639                         offset = offset + 14;
3640                         break;
3641                 case 1:
3642                         offset = offset + 5;
3643                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS subscribed", 1);
3644                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS requested", 1);
3645                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS negotiated", 1);
3646                         break;
3647                 default:
3648                         break;
3649         }
3650
3651         sn_down = tvb_get_ntohs(tvb, offset);
3652         sn_up = tvb_get_ntohs(tvb, offset+2);
3653         pdu_send_no = tvb_get_guint8(tvb, offset+4);
3654         pdu_rec_no = tvb_get_guint8(tvb, offset+5);
3655
3656         proto_tree_add_text(ext_tree_pdp, tvb, offset, 2, "Sequence number down: %u", sn_down);
3657         proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 2, "Sequence number up: %u", sn_up);
3658         proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "Send N-PDU number: %u", pdu_send_no);
3659         proto_tree_add_text(ext_tree_pdp, tvb, offset+5, 1, "Receive N-PDU number: %u", pdu_rec_no);
3660
3661         switch (gtp_version) {
3662                 case 0:
3663                         up_flow = tvb_get_ntohs(tvb, offset+6);
3664                         proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 2, "Uplink flow label signalling: %u", up_flow);
3665                         offset = offset + 8;
3666                         break;
3667                 case 1:
3668                         up_teid = tvb_get_ntohl(tvb, offset+6);
3669                         up_teid_cp = tvb_get_ntohl(tvb, offset+10);
3670                         pdp_cntxt_id = tvb_get_guint8(tvb, offset+14);
3671                         proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 4, "Uplink TEID: %x", up_teid);
3672                         proto_tree_add_text(ext_tree_pdp, tvb, offset+10, 4, "Uplink TEID control plane: %x", up_teid_cp);
3673                         proto_tree_add_text(ext_tree_pdp, tvb, offset+14, 1, "PDP context identifier: %u", pdp_cntxt_id);
3674                         offset = offset + 15;
3675                         break;
3676                 default:
3677                         break;
3678         }
3679
3680         pdp_type_org = tvb_get_guint8(tvb, offset) & 0x0F;
3681         pdp_type_num = tvb_get_guint8(tvb, offset+1);
3682         pdp_addr_len = tvb_get_guint8(tvb, offset+2);
3683
3684         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "PDP organization: %s", val_to_str(pdp_type_org, pdp_type, "Unknown PDP org"));
3685         proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 1, "PDP type: %s", val_to_str(pdp_type_num, pdp_org_type, "Unknown PDP type"));
3686         proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 1, "PDP address length: %u", pdp_addr_len);
3687
3688         if (pdp_addr_len > 0) {
3689                 switch (pdp_type_num) {
3690                         case 0x21:
3691                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
3692                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 4, "PDP address: %s", ip_to_str((guint8 *)&addr_ipv4));
3693                                 break;
3694                         case 0x57:
3695                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
3696                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 16, "PDP address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3697                                 break;
3698                         default:
3699                                 break;
3700                 }
3701         }
3702
3703         offset = offset + 3 + pdp_addr_len;
3704
3705         ggsn_addr_len = tvb_get_guint8(tvb, offset);
3706         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN address length: %u", ggsn_addr_len);
3707
3708         switch (ggsn_addr_len) {
3709                 case 4:
3710                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
3711                         proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN address: %s", ip_to_str((guint8 *)&addr_ipv4));
3712                         break;
3713                 case 16:
3714                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
3715                         proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3716                         break;
3717                 default:
3718                         break;
3719         }
3720
3721         offset = offset + 1 + ggsn_addr_len;
3722
3723         if (gtp_version == 1) {
3724
3725                 ggsn_addr_len = tvb_get_guint8(tvb, offset);
3726                 proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN 2 address length: %u", ggsn_addr_len);
3727
3728                 switch (ggsn_addr_len) {
3729                         case 4:
3730                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
3731                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN 2 address: %s", ip_to_str((guint8 *)&addr_ipv4));
3732                                 break;
3733                         case 16:
3734                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
3735                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN 2 address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3736                                 break;
3737                         default:
3738                                 break;
3739                 }
3740                 offset = offset + 1 + ggsn_addr_len;
3741
3742         }
3743
3744         apn_len = tvb_get_guint8(tvb, offset);
3745         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "APN length: %u", apn_len);
3746         decode_apn(tvb, offset+1, apn_len, ext_tree_pdp);
3747
3748         offset = offset + 1 + apn_len;
3749
3750         trans_id = tvb_get_guint8(tvb, offset);
3751         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "Transaction identifier: %u", trans_id);
3752
3753         return 3+length;
3754 }
3755
3756 /* GPRS:        9.60, v7.6.0, chapter 7.9.21
3757  * UMTS:        29.060, v4.0, chapter 7.7.30
3758  */
3759 static int
3760 decode_gtp_apn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3761
3762         guint16         length;
3763         proto_tree      *ext_tree_apn;
3764         proto_item      *te;
3765
3766         length = tvb_get_ntohs(tvb, offset+1);
3767
3768         te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_APN, gtp_val, "Unknown field"));
3769         ext_tree_apn = proto_item_add_subtree(te, ett_gtp_apn);
3770
3771         proto_tree_add_text(ext_tree_apn, tvb, offset+1, 2, "APN length : %u", length);
3772         decode_apn(tvb, offset+3, length, ext_tree_apn);
3773
3774         return 3+length;
3775 }
3776
3777 /* GPRS:        9.60 v7.6.0, chapter 7.9.22
3778  *              4.08 v. 7.1.2, chapter 10.5.6.3 (p.580)
3779  * UMTS:        29.060 v4.0, chapter 7.7.31
3780  *              24.008, v4.2, chapter 10.5.6.3
3781  */
3782 int
3783 decode_gtp_proto_conf(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3784
3785         guint16         length, proto_offset;
3786         guint16         proto_id;
3787         guint8          conf, proto_len, cnt = 1;
3788         tvbuff_t        *next_tvb;
3789         proto_tree      *ext_tree_proto;
3790         proto_item      *te;
3791         gboolean        save_writable;
3792
3793         length = tvb_get_ntohs(tvb, offset + 1);
3794
3795         te = proto_tree_add_text(tree, tvb, offset, length + 3, val_to_str(GTP_EXT_PROTO_CONF, gtp_val, "Unknown message"));
3796         ext_tree_proto = proto_item_add_subtree(te, ett_gtp_proto);
3797
3798         proto_tree_add_text(ext_tree_proto, tvb, offset + 1, 2, "Length: %u", length);
3799
3800         if (length < 1) return 3;
3801
3802         conf = tvb_get_guint8 (tvb, offset + 3) & 0x07;
3803         proto_tree_add_text (ext_tree_proto, tvb, offset + 3, 1, "Configuration protocol (00000xxx): %u", conf);
3804
3805         proto_offset = 1;       /* ... 1st byte is conf */
3806         offset += 4;
3807
3808         for (;;) {
3809                 if (proto_offset >= length) break;
3810                 proto_id = tvb_get_ntohs (tvb, offset);
3811                 proto_len = tvb_get_guint8 (tvb, offset + 2);
3812                 proto_offset += proto_len + 3;          /* 3 = proto id + length byte */
3813
3814                 if (proto_len > 0) {
3815
3816                         proto_tree_add_text (ext_tree_proto, tvb, offset, 2, "Protocol %u ID: %s (0x%04x)",
3817                             cnt, val_to_str(proto_id, ppp_vals, "Unknown"),
3818                             proto_id);
3819                         proto_tree_add_text (ext_tree_proto, tvb, offset+2, 1, "Protocol %u length: %u", cnt, proto_len);
3820
3821                         /*
3822                          * Don't allow the dissector for the configuration
3823                          * protocol in question to update the columns - this
3824                          * is GTP, not PPP.
3825                          */
3826                         save_writable = col_get_writable(pinfo->cinfo);
3827                         col_set_writable(pinfo->cinfo, FALSE);
3828
3829                         /*
3830                          * XXX - should we have our own dissector table,
3831                          * solely for configuration protocols, so that bogus
3832                          * values don't cause us to dissect the protocol
3833                          * data as, for example, IP?
3834                          */
3835                         next_tvb = tvb_new_subset (tvb, offset + 3, proto_len, proto_len);
3836                         if (!dissector_try_port(ppp_subdissector_table,
3837                             proto_id, next_tvb, pinfo, ext_tree_proto)) {
3838                                 call_dissector(data_handle, next_tvb, pinfo,
3839                                     ext_tree_proto);
3840                         }
3841
3842                         col_set_writable(pinfo->cinfo, save_writable);
3843                 }
3844
3845                 offset += proto_len + 3;
3846                 cnt++;
3847         }
3848
3849         return 3 + length;
3850 }
3851
3852 /* GPRS:        9.60 v7.6.0, chapter 7.9.23
3853  * UMTS:        29.060 v4.0, chapter 7.7.32
3854  */
3855 static int
3856 decode_gtp_gsn_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3857
3858         guint8          addr_type, addr_len;
3859         guint16         length;
3860         guint32         addr_ipv4;
3861         struct  e_in6_addr addr_ipv6;
3862         proto_tree      *ext_tree_gsn_addr;
3863         proto_item      *te;
3864
3865         length = tvb_get_ntohs(tvb, offset+1);
3866
3867         te = proto_tree_add_text(tree, tvb, offset, 3+length, "GSN address : ");
3868         ext_tree_gsn_addr = proto_item_add_subtree(te, ett_gtp_gsn_addr);
3869
3870         switch (length) {
3871                 case 4:
3872                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
3873                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
3874                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
3875                         proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+3, 4, addr_ipv4);
3876                         break;
3877                 case 5:
3878                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
3879                         addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
3880                         proto_tree_add_uint(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_addr_type : hf_gtpv0_gsn_addr_type, tvb, offset+3, 1, addr_type);
3881                         addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
3882                         proto_tree_add_uint(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_addr_len : hf_gtpv0_gsn_addr_len, tvb, offset+3, 1, addr_len);
3883                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+4, sizeof addr_ipv4);
3884                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
3885                         proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+4, 4, addr_ipv4);
3886                         break;
3887                 case 16:
3888                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
3889                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
3890                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3891                         proto_tree_add_ipv6(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv6 : hf_gtpv0_gsn_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6);
3892                         break;
3893                 case 17:
3894                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
3895                         addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
3896                         proto_tree_add_uint(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_addr_type : hf_gtpv0_gsn_addr_type, tvb, offset+3, 1, addr_type);
3897                         addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
3898                         proto_tree_add_uint(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_addr_len : hf_gtpv0_gsn_addr_len, tvb, offset+3, 1, addr_len);
3899                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+4, sizeof addr_ipv6);
3900                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3901                         proto_tree_add_ipv6(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv6 : hf_gtpv0_gsn_ipv6, tvb, offset+4, 16, (guint8*)&addr_ipv6);
3902                         break;
3903                 default:
3904                         proto_item_append_text(te, "unknown type or wrong length");
3905                         break;
3906         }
3907
3908         return 3+length;
3909 }
3910
3911 /* GPRS:        9.60 v7.6.0, chapter 7.9.24
3912  * UMTS:        29.060 v4.0, chapter 7.7.33
3913  */
3914 static int
3915 decode_gtp_msisdn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3916
3917         const guint8    *msisdn_val;
3918         gchar           *msisdn_str;
3919         guint16         length;
3920
3921         length = tvb_get_ntohs(tvb, offset+1);
3922
3923         if (length < 1) return 3;
3924
3925         msisdn_val = tvb_get_ptr(tvb, offset+3, length);
3926         msisdn_str = msisdn_to_str(msisdn_val, length);
3927
3928         proto_tree_add_string(tree, gtp_version ? hf_gtpv1_msisdn : hf_gtpv0_msisdn, tvb, offset, 3+length, msisdn_str);
3929
3930         return 3+length;
3931 }
3932
3933 /* GPRS:        not present
3934  * UMTS:        29.060 v4.0, chapter 7.7.34
3935  *              24.008 v4.2, chapter 10.5.6.5
3936  */
3937 static int
3938 decode_gtp_qos_umts(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3939
3940         return decode_qos_umts(tvb, offset, tree, "Quality of Service", 2);
3941 }
3942
3943 /* GPRS:        not present
3944  * UMTS:        29.060 v4.0, chapter 7.7.35
3945  */
3946 static int
3947 decode_gtp_auth_qui(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3948
3949         return (1 + decode_quintuplet(tvb, offset+1, tree, 1, 1));
3950
3951 }
3952
3953 /* GPRS:        not present
3954  * UMTS:        29.060 v4.0, chapter 7.7.36
3955  *              24.008 v4.2, chapter 10.5.6.12
3956  */
3957 static int
3958 decode_gtp_tft(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
3959
3960         guint16         length, port1, port2, tos;
3961         guint8          tft_flags, tft_code, no_packet_filters, i, pf_id, pf_eval, pf_len, pf_content_id, proto, spare;
3962         guint           pf_offset;
3963         guint32         mask_ipv4, addr_ipv4, ipsec_id, label;
3964         struct  e_in6_addr addr_ipv6, mask_ipv6;
3965         proto_tree      *ext_tree_tft, *ext_tree_tft_pf, *ext_tree_tft_flags;
3966         proto_item      *te, *tee, *tef;
3967
3968         length = tvb_get_ntohs(tvb, offset+1);
3969
3970         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Traffic flow template");
3971         ext_tree_tft = proto_item_add_subtree(te, ett_gtp_tft);
3972
3973         tft_flags = tvb_get_guint8(tvb, offset+3);
3974         tft_code = (tft_flags >> 5) & 0x07;
3975         spare = (tft_flags >> 4) & 0x01;
3976         no_packet_filters = tft_flags & 0x0F;
3977
3978         proto_tree_add_text(ext_tree_tft, tvb, offset+1, 2, "TFT length: %u", length);
3979
3980         tef = proto_tree_add_text (ext_tree_tft, tvb, offset + 3, 1, "TFT flags");
3981         ext_tree_tft_flags = proto_item_add_subtree (tef, ett_gtp_tft_flags);
3982         proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_code, tvb, offset + 3, 1, tft_flags);
3983         proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_spare, tvb, offset + 3, 1, tft_flags);
3984         proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_number, tvb, offset + 3, 1, tft_flags);
3985
3986         offset = offset + 4;
3987
3988         for (i=0;i<no_packet_filters;i++) {
3989
3990                 pf_id = tvb_get_guint8(tvb, offset);
3991
3992                 tee = proto_tree_add_text (ext_tree_tft, tvb, offset, 1, "Packet filter id: %u", pf_id);
3993                 ext_tree_tft_pf = proto_item_add_subtree (tee, ett_gtp_tft_pf);
3994                 offset++;
3995
3996                 if (tft_code != 2) {
3997
3998                         pf_eval = tvb_get_guint8(tvb, offset);
3999                         pf_len = tvb_get_guint8(tvb, offset + 1);
4000
4001                         proto_tree_add_uint (ext_tree_tft_pf, hf_gtpv1_tft_eval, tvb, offset, 1, pf_eval);
4002                         proto_tree_add_text (ext_tree_tft_pf, tvb, offset+1, 1, "Content length: %u", pf_len);
4003
4004                         offset = offset + 2;
4005                         pf_offset = 0;
4006
4007                         while (pf_offset < pf_len) {
4008
4009                                 pf_content_id = tvb_get_guint8 (tvb, offset + pf_offset);
4010
4011                                 switch (pf_content_id) {
4012                                         /* address IPv4 and mask = 8 bytes*/
4013                                         case 0x10:
4014                                                 tvb_memcpy (tvb, (guint8 *)&addr_ipv4, offset + pf_offset + 1, sizeof addr_ipv4);
4015                                                 tvb_memcpy (tvb, (guint8 *)&mask_ipv4, offset + pf_offset + 5, sizeof mask_ipv4);
4016                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 9, "ID 0x10: IPv4/mask: %s/%s", ip_to_str ((guint8 *)&addr_ipv4), ip_to_str ((guint8 *)&mask_ipv4));
4017                                                 pf_offset = pf_offset + 9;
4018                                                 break;
4019                                         /* address IPv6 and mask = 32 bytes*/
4020                                         case 0x20:
4021                                                 tvb_memcpy (tvb, (guint8 *)&addr_ipv6, offset+pf_offset+1, sizeof addr_ipv6);
4022                                                 tvb_memcpy (tvb, (guint8 *)&mask_ipv6, offset+pf_offset+17, sizeof mask_ipv6);
4023                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset+pf_offset, 33, "ID 0x20: IPv6/mask: %s/%s", ip6_to_str ((struct e_in6_addr*)&addr_ipv6), ip6_to_str ((struct e_in6_addr*)&mask_ipv6));
4024                                                 pf_offset = pf_offset + 33;
4025                                                 break;
4026                                         /* protocol identifier/next header type = 1 byte*/
4027                                         case 0x30:
4028                                                 proto = tvb_get_guint8 (tvb, offset + pf_offset + 1);
4029                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x30: IPv4 protocol identifier/IPv6 next header: %u (%x)", proto, proto);
4030                                                 pf_offset = pf_offset + 2;
4031                                                 break;
4032                                         /* single destination port type = 2 bytes */
4033                                         case 0x40:
4034                                                 port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
4035                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x40: destination port: %u", port1);
4036                                                 pf_offset = pf_offset + 3;
4037                                                 break;
4038                                         /* destination port range type = 4 bytes */
4039                                         case 0x41:
4040                                                 port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
4041                                                 port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3);
4042                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x41: destination port range: %u - %u", port1, port2);
4043                                                 pf_offset = pf_offset + 5;
4044                                                 break;
4045                                         /* single source port type = 2 bytes */
4046                                         case 0x50:
4047                                                 port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
4048                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x50: source port: %u", port1);
4049                                                 pf_offset = pf_offset + 3;
4050                                                 break;
4051                                         /* source port range type = 4 bytes */
4052                                         case 0x51:
4053                                                 port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
4054                                                 port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3);
4055                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x51: source port range: %u - %u", port1, port2);
4056                                                 pf_offset = pf_offset + 5;
4057                                                 break;
4058                                         /* security parameter index type = 4 bytes */
4059                                         case 0x60:
4060                                                 ipsec_id = tvb_get_ntohl (tvb, offset + pf_offset + 1);
4061                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x60: security parameter index: %x", ipsec_id);
4062                                                 pf_offset = pf_offset + 5;
4063                                                 break;
4064                                         /* type of service/traffic class type = 2 bytes */
4065                                         case 0x70:
4066                                                 tos = tvb_get_ntohs (tvb, offset + pf_offset + 1);
4067                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x70: Type of Service/Traffic Class: %u (%x)", tos, tos);
4068                                                 pf_offset = pf_offset + 3;
4069                                                 break;
4070                                         /* flow label type = 3 bytes */
4071                                         case 0x80:
4072                                                 label = tvb_get_ntoh24(tvb, offset + pf_offset + 1) & 0x0FFFFF;;
4073                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 4, "ID 0x80: Flow Label: %u (%x)", label, label);
4074                                                 pf_offset = pf_offset + 4;
4075                                                 break;
4076
4077                                         default:
4078                                                 proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 1, "Unknown value: %x ", pf_content_id);
4079                                                 pf_offset++; /* to avoid infinite loop */
4080                                                 break;
4081                                 }
4082                         }
4083
4084                         offset = offset + pf_offset;
4085                 }
4086         }
4087
4088         return 3 + length;
4089 }
4090
4091 /* GPRS:        not present
4092  * UMTS:        29.060 v4.0, chapter 7.7.37
4093  *              25.413 v3.4, chapter ???
4094  */
4095 static int
4096 decode_gtp_target_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4097
4098         guint16         length;
4099
4100         length = tvb_get_ntohs(tvb, offset + 1);
4101
4102         proto_tree_add_text(tree, tvb, offset, 3 + length, "Targer Identification");
4103
4104         return 3 + length;
4105 }
4106
4107
4108 /* GPRS:        not present
4109  * UMTS:        29.060 v4.0, chapter 7.7.38
4110  */
4111 static int
4112 decode_gtp_utran_cont(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4113
4114         guint16         length;
4115
4116         length = tvb_get_ntohs(tvb, offset + 1);
4117
4118         proto_tree_add_text(tree, tvb, offset, 3 + length, "UTRAN transparent field");
4119
4120         return 3 + length;
4121
4122 }
4123
4124
4125 /* GPRS:        not present
4126  * UMTS:        29.060 v4.0, chapter 7.7.39
4127  */
4128 static int
4129 decode_gtp_rab_setup(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4130
4131         guint32         teid, addr_ipv4;
4132         guint16         length;
4133         guint8          nsapi;
4134         struct  e_in6_addr addr_ipv6;
4135         proto_tree      *ext_tree_rab_setup;
4136         proto_item      *te;
4137
4138         length = tvb_get_ntohs(tvb, offset + 1);
4139         nsapi = tvb_get_guint8(tvb, offset + 3) & 0x0F;
4140
4141         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Radio Access Bearer Setup Information");
4142         ext_tree_rab_setup = proto_item_add_subtree(te, ett_gtp_rab_setup);
4143
4144         proto_tree_add_text(ext_tree_rab_setup, tvb, offset+1, 2, "RAB setup length : %u", length);
4145         proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_nsapi, tvb, offset+3, 1, nsapi);
4146
4147         if (length > 1) {
4148
4149                 teid = tvb_get_ntohl(tvb, offset + 4);
4150
4151                 proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_teid_data, tvb, offset+4, 4, teid);
4152
4153                 switch (length) {
4154                         case 12:
4155                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+8, sizeof addr_ipv4);
4156                                 proto_tree_add_ipv4(ext_tree_rab_setup, hf_gtpv1_rnc_ipv4, tvb, offset+8, 4, addr_ipv4);
4157                                 break;
4158                         case 24:
4159                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+8, sizeof addr_ipv6);
4160                                 proto_tree_add_ipv6(ext_tree_rab_setup, hf_gtpv1_rnc_ipv6, tvb, offset+8, 16, (guint8 *)&addr_ipv6);
4161                                 break;
4162                         default:
4163                                 break;
4164                 }
4165         }
4166
4167         return 3 + length;
4168 }
4169
4170
4171 /* GPRS:        not present
4172  * UMTS:        29.060 v4.0, chapter 7.7.40
4173  */
4174 static int
4175 decode_gtp_hdr_list(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4176
4177         int             i;
4178         guint8          length, hdr;
4179         proto_tree      *ext_tree_hdr_list;
4180         proto_item      *te;
4181
4182         length = tvb_get_guint8(tvb, offset + 1);
4183
4184         te = proto_tree_add_text(tree, tvb, offset, 2+length, "%s", val_to_str(GTP_EXT_HDR_LIST, gtp_val, "Unknown"));
4185         ext_tree_hdr_list = proto_item_add_subtree(te, ett_gtp_hdr_list);
4186
4187         proto_tree_add_text(ext_tree_hdr_list, tvb, offset+1, 1, "Number of Extension Header Types in list (i.e., length) : %u", length);
4188
4189         for(i=0 ; i<length ; i++) {
4190                 hdr = tvb_get_guint8(tvb, offset+2+i);
4191
4192                 proto_tree_add_text(ext_tree_hdr_list, tvb, offset+2+i, 1, "No. %u --> Extension Header Type value : %s (%u)", i+1, val_to_str(hdr, gtp_val, "Unknown Extension Header Type"), hdr);
4193         }
4194
4195         return 2 + length;
4196 }
4197
4198 /* GPRS:        not present
4199  * UMTS:        29.060 v4.0, chapter 7.7.41
4200  * TODO:        find TriggerID description
4201  */
4202 static int
4203 decode_gtp_trigger_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4204
4205         guint16         length;
4206
4207         length = tvb_get_ntohs(tvb, offset + 1);
4208
4209         proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_TRIGGER_ID, gtp_val, "Unknown"), length);
4210
4211         return 3 + length;
4212
4213 }
4214
4215 /* GPRS:        not present
4216  * UMTS:        29.060 v4.0, chapter 7.7.42
4217  * TODO:        find OMC-ID description
4218  */
4219 static int
4220 decode_gtp_omc_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4221
4222         guint16         length;
4223
4224         length = tvb_get_ntohs(tvb, offset + 1);
4225
4226         proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_OMC_ID, gtp_val, "Unknown"), length);
4227
4228         return 3 + length;
4229
4230 }
4231
4232 /* GPRS:        9.60 v7.6.0, chapter 7.9.25
4233  * UMTS:        29.060 v4.0, chapter 7.7.43
4234  */
4235 static int
4236 decode_gtp_chrg_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4237
4238         guint16         length;
4239         guint32         addr_ipv4;
4240         struct  e_in6_addr addr_ipv6;
4241         proto_tree      *ext_tree_chrg_addr;
4242         proto_item      *te;
4243
4244         length = tvb_get_ntohs(tvb, offset+1);
4245
4246         te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s : ", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown"));
4247         ext_tree_chrg_addr = proto_item_add_subtree(te, ett_gtp_chrg_addr);
4248
4249         proto_tree_add_text(ext_tree_chrg_addr, tvb, offset+1, 2, "%s length : %u", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown"), length);
4250
4251         switch (length) {
4252                 case 4:
4253                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
4254                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
4255                         proto_tree_add_ipv4(ext_tree_chrg_addr, gtp_version ? hf_gtpv1_chrg_ipv4 : hf_gtpv0_chrg_ipv4, tvb, offset+3, 4, addr_ipv4);
4256                         break;
4257                 case 16:
4258                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
4259                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
4260                         proto_tree_add_ipv6(ext_tree_chrg_addr, gtp_version ? hf_gtpv1_chrg_ipv6 : hf_gtpv0_chrg_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6);
4261                         break;
4262                 default:
4263                         proto_item_append_text(te, "unknown type or wrong length");
4264                         break;
4265         }
4266
4267         return 3 + length;
4268 }
4269
4270 /* GPRS:        12.15
4271  * UMTS:        33.015
4272  */
4273 static int
4274 decode_gtp_rel_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4275
4276         guint16         length, n, number;
4277         proto_tree      *ext_tree_rel_pack;
4278         proto_item      *te;
4279
4280         length = tvb_get_ntohs(tvb, offset + 1);
4281
4282         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of released packets IE");
4283         ext_tree_rel_pack = proto_item_add_subtree(te, ett_gtp_rel_pack);
4284
4285         n = 0;
4286
4287         while (n < length) {
4288
4289                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4290                 proto_tree_add_text(ext_tree_rel_pack, tvb, offset + 3 + n, 2, "%u", number);
4291                 n = n + 2;
4292
4293         }
4294
4295         return 3 + length;
4296 }
4297
4298 /* GPRS:        12.15
4299  * UMTS:        33.015
4300  */
4301 static int
4302 decode_gtp_can_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4303
4304         guint16         length, n, number;
4305         proto_tree      *ext_tree_can_pack;
4306         proto_item      *te;
4307
4308         length = tvb_get_ntohs(tvb, offset + 1);
4309
4310         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of cancelled  packets IE");
4311         ext_tree_can_pack = proto_item_add_subtree(te, ett_gtp_can_pack);
4312
4313         n = 0;
4314
4315         while (n < length) {
4316
4317                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4318                 proto_tree_add_text(ext_tree_can_pack, tvb, offset + 3 + n, 2, "%u", number);
4319                 n = n + 2;
4320
4321         }
4322
4323         return 3 + length;
4324 }
4325
4326 /* CDRs dissector */
4327 static int
4328 decode_gtp_data_req(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4329
4330         guint16         length, format_ver, data_len, i, j;
4331         guint8          no, format, rectype;
4332         proto_tree      *ext_tree, *cdr_tree;
4333         proto_item      *te, *ce;
4334
4335         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_DATA_REQ, gtp_val, "Unknown message"));
4336         ext_tree = proto_item_add_subtree(te, ett_gtp_ext);
4337
4338         length = tvb_get_ntohs(tvb, offset + 1);
4339         no = tvb_get_guint8(tvb, offset + 3);
4340         format = tvb_get_guint8(tvb, offset + 4);
4341         format_ver = tvb_get_ntohs(tvb, offset + 5);
4342
4343         proto_tree_add_text(ext_tree, tvb, offset+1, 2, "Length: %u", length);
4344         proto_tree_add_text(ext_tree, tvb, offset+3, 1, "Number of data records: %u", no);
4345         proto_tree_add_text(ext_tree, tvb, offset+4, 1, "Data record format: %u", format);
4346         proto_tree_add_text(ext_tree, tvb, offset+5, 2, "Data record format version: %u", format_ver);
4347
4348         data_len = 0;
4349         offset = offset + 7;
4350
4351         if (gtpv0_cdr_as != DONT_DISSECT_CDRS) {
4352
4353         for (i = 0; i < no; i++) {
4354                 data_len = tvb_get_ntohs(tvb, offset);
4355                 rectype = tvb_get_guint8(tvb, offset+2);
4356                 switch (rectype) {
4357                         case 0x13:              /* GCDR */
4358                                 if (tvb_length_remaining(tvb, offset) < 3 + 118) {
4359                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "GCDR fragmented, can't dissect");
4360                                         break;
4361                                 }
4362
4363                                 tvb_memcpy(tvb, gcdr.imsi, offset+3, 8);
4364                                 tvb_memcpy(tvb, (guint8 *)&gcdr.ggsnaddr, offset+11, sizeof gcdr.ggsnaddr);
4365                                 gcdr.chrgid = tvb_get_ntohl(tvb, offset+15);
4366                                 tvb_memcpy(tvb, (guint8 *)&gcdr.sgsnaddr, offset+19, sizeof gcdr.sgsnaddr);
4367                                 tvb_memcpy(tvb, gcdr.apn, offset+23, 63);
4368                                 gcdr.pdporg = tvb_get_guint8(tvb, offset+86);
4369                                 gcdr.pdptype = tvb_get_guint8(tvb, offset+87);
4370                                 tvb_memcpy(tvb, (guint8 *)&gcdr.pdpaddr, offset+88, sizeof gcdr.pdpaddr);
4371                                 gcdr.addrflag = tvb_get_guint8(tvb, offset+92);
4372                                 gcdr.uplink = tvb_get_ntohl(tvb, offset+96);
4373                                 gcdr.downlink = tvb_get_ntohl(tvb, offset+100);
4374                                 gcdr.timestamp = tvb_get_ntohl(tvb, offset+104);
4375                                 gcdr.opening = tvb_get_ntohl(tvb, offset+108);
4376                                 gcdr.duration = tvb_get_ntohl(tvb, offset+112);
4377                                 gcdr.closecause = tvb_get_guint8(tvb, offset+116);
4378                                 gcdr.seqno = tvb_get_ntohl(tvb, offset+117);
4379
4380                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "GCDR (0x13), sequence number: %u", gcdr.seqno);
4381                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4382                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4383                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4384                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 8, "IMSI: %s", id_to_str(gcdr.imsi));
4385                                 proto_tree_add_text(cdr_tree, tvb, offset+11, 4, "GGSN address: %s", ip_to_str((guint8 *)&gcdr.ggsnaddr));
4386                                 proto_tree_add_text(cdr_tree, tvb, offset+15, 4, "Charging ID: %x", gcdr.chrgid);
4387                                 proto_tree_add_text(cdr_tree, tvb, offset+19, 4, "SGSN address: %s", ip_to_str((guint8 *)&gcdr.sgsnaddr));
4388                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 63, "APN: %s", gcdr.apn);
4389                                 proto_tree_add_text(cdr_tree, tvb, offset+86, 1, "PDP org: %s", val_to_str(gcdr.pdporg, pdp_org_type, "Unknown PDP org"));
4390                                 proto_tree_add_text(cdr_tree, tvb, offset+87, 1, "PDP type: %s", val_to_str(gcdr.pdptype, pdp_type, "Unknown PDP type"));
4391                                 proto_tree_add_text(cdr_tree, tvb, offset+88, 4, "PDP address: %s", ip_to_str((guint8 *)&gcdr.pdpaddr));
4392                                 proto_tree_add_text(cdr_tree, tvb, offset+92, 1, "PDP address type: %u", gcdr.addrflag);
4393                                 decode_qos_gprs(tvb, offset+93, cdr_tree, "QoS", 0);
4394                                 proto_tree_add_text(cdr_tree, tvb, offset+96, 4, "Uplink volume: %u", gcdr.uplink);
4395                                 proto_tree_add_text(cdr_tree, tvb, offset+100, 4, "Downlink volume: %u", gcdr.downlink);
4396                                 proto_tree_add_text(cdr_tree, tvb, offset+104, 4, "Timestamp: %s", time_int_to_str(gcdr.timestamp));
4397                                 proto_tree_add_text(cdr_tree, tvb, offset+108, 4, "Record opening time: %s", time_int_to_str(gcdr.opening));
4398                                 proto_tree_add_text(cdr_tree, tvb, offset+112, 4, "Duration: %s", rel_time_int_to_str(gcdr.duration));
4399                                 proto_tree_add_text(cdr_tree, tvb, offset+116, 1, "Cause for close: %s (%u)", val_to_str(gcdr.closecause, cdr_close_type, "Unknown cause"), gcdr.closecause);
4400                                 proto_tree_add_text(cdr_tree, tvb, offset+117, 4, "Sequence number: %u", gcdr.seqno);
4401
4402                                 if (data_len > 119) {
4403                                         tvb_memcpy (tvb, gcdr.msisdn, offset + 121, 9);
4404                                         proto_tree_add_text(cdr_tree, tvb, offset+121, 9, "MSISDN: %s", msisdn_to_str (gcdr.msisdn, 9));
4405                                 }
4406
4407                                 break;
4408
4409                         case 0x12:              /* SCDR */
4410                                 if (tvb_length_remaining(tvb, offset) < 3 + 277) {
4411                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SCDR fragmented, can't dissect");
4412                                         break;
4413                                 }
4414
4415                                 scdr.len = tvb_get_letohs(tvb, offset+3);
4416                                 scdr.netini = tvb_get_guint8(tvb, offset+5);
4417                                 scdr.anon = tvb_get_guint8(tvb, offset+6);
4418                                 scdr.imsilen = tvb_get_guint8(tvb, offset+7);
4419                                 tvb_memcpy(tvb, scdr.imsi, offset+8, 8);
4420                                 tvb_memcpy(tvb, scdr.imei, offset+16, 8);
4421                                 scdr.msisdnlen = tvb_get_guint8(tvb, offset+24);
4422                                 tvb_memcpy(tvb, scdr.msisdn, offset+25, 10);
4423                                 tvb_memcpy(tvb, (guint8 *)&scdr.sgsnaddr, offset+35, sizeof scdr.sgsnaddr);
4424                                 tvb_memcpy(tvb, scdr.msclass_notused, offset+39, 12);
4425                                 scdr.msclass_caplen = tvb_get_guint8(tvb, offset+51);
4426                                 scdr.msclass_cap = tvb_get_guint8(tvb, offset+52);
4427                                 scdr.msclass_capomit = tvb_get_ntohs(tvb, offset+53);
4428                                 scdr.lac = tvb_get_ntohs(tvb, offset+55);
4429                                 scdr.rac = tvb_get_guint8(tvb, offset+57);
4430                                 scdr.cid = tvb_get_ntohs(tvb, offset+58);
4431                                 scdr.chrgid = tvb_get_ntohl(tvb, offset+60);
4432                                 tvb_memcpy(tvb, (guint8 *)&scdr.ggsnaddr, offset+64, sizeof scdr.ggsnaddr);
4433                                 tvb_memcpy(tvb, scdr.apn, offset+68, 64);
4434                                 scdr.pdporg = tvb_get_guint8(tvb, offset+132);
4435                                 scdr.pdptype = tvb_get_guint8(tvb, offset+133);
4436                                 tvb_memcpy(tvb, (guint8 *)&scdr.pdpaddr, offset+134, sizeof scdr.pdpaddr);
4437                                 scdr.listind = tvb_get_guint8(tvb, offset+138);
4438                                 for (j=0;j<4;j++) {
4439                                         scdr.change[j].change = tvb_get_guint8(tvb, offset+139+23*j);
4440                                         scdr.change[j].time1 = tvb_get_ntohl(tvb, offset+140+23*j);
4441                                         scdr.change[j].time2 = tvb_get_ntohl(tvb, offset+144+23*j);
4442                                         scdr.change[j].uplink = tvb_get_ntohl(tvb, offset+148+23*j);
4443                                         scdr.change[j].downlink = tvb_get_ntohl(tvb, offset+152+23*j);
4444 /*                                      tvb_memcpy(tvb, scdr.change[j].qos_req, offset+156+23*j, 3);
4445                                         tvb_memcpy(tvb, scdr.change[j].qos_neg, offset+159+23*j, 3);*/
4446                                 }
4447                                 scdr.timestamp = tvb_get_ntohl(tvb, offset+254);
4448                                 scdr.opening = tvb_get_ntohl(tvb, offset+258);
4449                                 scdr.duration = tvb_get_ntohl(tvb, offset+262);
4450                                 scdr.sgsnchange = tvb_get_guint8(tvb, offset+266);
4451                                 scdr.closecause = tvb_get_guint8(tvb, offset+267);
4452                                 scdr.diag1 = tvb_get_guint8(tvb, offset+268);
4453                                 scdr.diag2 = tvb_get_guint8(tvb, offset+269);
4454                                 scdr.diag3 = tvb_get_guint8(tvb, offset+270);
4455                                 scdr.diag4 = tvb_get_guint8(tvb, offset+271);
4456                                 scdr.diag5 = tvb_get_ntohl(tvb, offset+272);
4457                                 scdr.seqno = tvb_get_ntohl(tvb, offset+276);
4458
4459                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SCDR (type %x), sequence number: %u", rectype, scdr.seqno);
4460                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4461                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4462                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4463                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "CDR length: %u", scdr.len);
4464                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "Network initiated PDP context: %s", yesno[scdr.netini]);
4465                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 1, "Anonymous acces: %s", yesno[scdr.anon]);
4466                                 proto_tree_add_text(cdr_tree, tvb, offset+7, 1, "IMSI length: %u", scdr.imsilen);
4467                                 proto_tree_add_text(cdr_tree, tvb, offset+8, 8, "IMSI: %s", id_to_str(scdr.imsi));
4468                                 proto_tree_add_text(cdr_tree, tvb, offset+16, 8, "IMEI: %s", id_to_str(scdr.imei));
4469                                 proto_tree_add_text(cdr_tree, tvb, offset+24, 1, "MSISDN length: %u", scdr.msisdnlen);
4470                                 proto_tree_add_text(cdr_tree, tvb, offset+25, 10, "MSISDN: %s", msisdn_to_str(scdr.msisdn, 10));
4471                                 proto_tree_add_text(cdr_tree, tvb, offset+35, 4, "SGSN address: %s", ip_to_str((guint8 *)&scdr.sgsnaddr));
4472                                 proto_tree_add_text(cdr_tree, tvb, offset+39, 12, "(not used)");
4473                                 proto_tree_add_text(cdr_tree, tvb, offset+51, 1, "MS network capability length: %u", scdr.msclass_caplen);
4474
4475 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+52, 1, "MS network capability: %u", scdr.msclass_cap);
4476                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4477                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+52, 1, scdr.cap);
4478                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+52, 1, scdr.cap);
4479                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+52, 1, scdr.cap);
4480                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+52, 1, scdr.cap);
4481                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+52, 1, scdr.cap);
4482                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+52, 1, scdr.cap);
4483                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+52, 1, scdr.cap);
4484 */
4485
4486                                 proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "MS network capability omitted: %u", scdr.msclass_capomit);
4487                                 proto_tree_add_text(cdr_tree, tvb, offset+55, 2, "LAC: %u", scdr.lac);
4488                                 proto_tree_add_text(cdr_tree, tvb, offset+57, 1, "RAC: %u", scdr.rac);
4489                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 2, "Cell ID: %u", scdr.cid);
4490                                 proto_tree_add_text(cdr_tree, tvb, offset+60, 4, "Charging ID: %x", scdr.chrgid);
4491                                 proto_tree_add_text(cdr_tree, tvb, offset+64, 4, "GGSN address: %s", ip_to_str((guint8 *)&scdr.ggsnaddr));
4492                                 proto_tree_add_text(cdr_tree, tvb, offset+68, 64, "APN: %s", scdr.apn);
4493                                 proto_tree_add_text(cdr_tree, tvb, offset+132, 1, "PDP org: %s", val_to_str(scdr.pdporg, pdp_org_type, "Unknown PDP org"));
4494                                 proto_tree_add_text(cdr_tree, tvb, offset+133, 1, "PDP type: %s", val_to_str(scdr.pdptype, pdp_type, "Unknown PDP type"));
4495                                 proto_tree_add_text(cdr_tree, tvb, offset+134, 4, "PDP address: %s", ip_to_str((guint8 *)&scdr.pdpaddr));
4496                                 proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "List of data volume index: %u", scdr.listind);
4497                                 for (j=0;j<4;j++) {
4498                                         proto_tree_add_text(cdr_tree, tvb, offset+139+23*j, 1, "List of data vol change condition: %u", scdr.change[j].change);
4499                                         proto_tree_add_text(cdr_tree, tvb, offset+140+23*j, 4, "Time1: %x", scdr.change[j].time1);
4500                                         proto_tree_add_text(cdr_tree, tvb, offset+144+23*j, 4, "Time2: %x", scdr.change[j].time2);
4501                                         proto_tree_add_text(cdr_tree, tvb, offset+148+23*j, 4, "Uplink: %x", scdr.change[j].uplink);
4502                                         proto_tree_add_text(cdr_tree, tvb, offset+152+23*j, 4, "Downlink: %x", scdr.change[j].downlink);
4503                                         decode_qos_gprs(tvb, offset+156, cdr_tree, "QoS requested", 0);
4504                                         decode_qos_gprs(tvb, offset+159, cdr_tree, "QoS negotiated", 0);
4505                                 }
4506                                 proto_tree_add_text(cdr_tree, tvb, offset+254, 4, "Timestamp: %s", time_int_to_str(scdr.timestamp));
4507                                 proto_tree_add_text(cdr_tree, tvb, offset+258, 4, "Opening: %s", time_int_to_str(scdr.opening));
4508                                 proto_tree_add_text(cdr_tree, tvb, offset+262, 4, "Duration: %s", rel_time_int_to_str(scdr.duration));
4509                                 proto_tree_add_text(cdr_tree, tvb, offset+266, 1, "SGSN change: %u", scdr.sgsnchange);
4510                                 proto_tree_add_text(cdr_tree, tvb, offset+267, 1, "Cause for close: %s (%u)", val_to_str(scdr.closecause, cdr_close_type, "Unknown cause"), scdr.closecause);
4511                                 proto_tree_add_text(cdr_tree, tvb, offset+268, 1, "Diagnostics 1: %u", scdr.diag1);
4512                                 proto_tree_add_text(cdr_tree, tvb, offset+269, 1, "Diagnostics 2: %u", scdr.diag2);
4513                                 proto_tree_add_text(cdr_tree, tvb, offset+270, 1, "Diagnostics 3: %u", scdr.diag3);
4514                                 proto_tree_add_text(cdr_tree, tvb, offset+271, 1, "Diagnostics 4: %u", scdr.diag4);
4515                                 proto_tree_add_text(cdr_tree, tvb, offset+272, 4, "Diagnostics 5: %u", scdr.diag5);
4516                                 proto_tree_add_text(cdr_tree, tvb, offset+276, 4, "Sequence number: %u", scdr.seqno);
4517                                 break;
4518                         case 0x14:              /* MCDR */
4519                                 if (tvb_length_remaining(tvb, offset) < 3 + 147) {
4520                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "MCDR fragmented, can't dissect");
4521                                         break;
4522                                 }
4523
4524                                 mcdr.len = tvb_get_ntohs(tvb, offset+3);
4525                                 mcdr.imsilen = tvb_get_guint8(tvb, offset+5);
4526                                 tvb_memcpy(tvb, mcdr.imsi, offset+6, 8);
4527                                 tvb_memcpy(tvb, mcdr.imei, offset+14, 8);
4528                                 mcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4529                                 tvb_memcpy(tvb, mcdr.msisdn, offset+23, 10);
4530                                 tvb_memcpy(tvb, (guint8 *)&mcdr.sgsnaddr, offset+33, sizeof mcdr.sgsnaddr);
4531                                 tvb_memcpy(tvb, mcdr.msclass_notused, offset+37, 12);
4532                                 mcdr.msclass_caplen = tvb_get_guint8(tvb, offset+49);
4533                                 mcdr.msclass_cap = tvb_get_guint8(tvb, offset+50);
4534                                 mcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+51);
4535                                 mcdr.lac = tvb_get_ntohs(tvb, offset+53);
4536                                 mcdr.rac = tvb_get_guint8(tvb, offset+55);
4537                                 mcdr.cid = tvb_get_ntohs(tvb, offset+56);
4538                                 mcdr.change_count = tvb_get_guint8(tvb, offset+58);
4539                                 for (j=0;j<4;j++) {
4540                                         mcdr.change[j].lac = tvb_get_ntohs(tvb, offset+59+13*j);
4541                                         mcdr.change[j].rac = tvb_get_guint8(tvb, offset+61+13*j);
4542                                         mcdr.change[j].cid = tvb_get_ntohs(tvb, offset+62+13*j);
4543                                         tvb_memcpy(tvb, mcdr.change[j].omit, offset+64+13*j, 8);
4544                                 }
4545                                 mcdr.timestamp = tvb_get_ntohl(tvb, offset+124);
4546                                 mcdr.opening = tvb_get_ntohl(tvb, offset+128);
4547                                 mcdr.duration = tvb_get_ntohl(tvb, offset+132);
4548                                 mcdr.sgsnchange = tvb_get_guint8(tvb, offset+136);
4549                                 mcdr.closecause = tvb_get_guint8(tvb, offset+137);
4550                                 mcdr.diag1 = tvb_get_guint8(tvb, offset+138);
4551                                 mcdr.diag2 = tvb_get_guint8(tvb, offset+139);
4552                                 mcdr.diag3 = tvb_get_guint8(tvb, offset+140);
4553                                 mcdr.diag4 = tvb_get_guint8(tvb, offset+141);
4554                                 mcdr.diag5 = tvb_get_ntohl(tvb, offset+142);
4555                                 mcdr.seqno = tvb_get_ntohl(tvb, offset+146);
4556
4557                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "MCDR (0x14), sequence number: %u", mcdr.seqno);
4558                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4559                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4560                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4561                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", mcdr.len);
4562                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", mcdr.imsilen);
4563                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(mcdr.imsi));
4564                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(mcdr.imei));
4565                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", mcdr.msisdnlen);
4566                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(mcdr.msisdn, 10));
4567                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 4, "SGSN address: %s", ip_to_str((guint8 *)&mcdr.sgsnaddr));
4568                                 proto_tree_add_text(cdr_tree, tvb, offset+37, 12, "(not used)");
4569                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 1, "MS network capability length: %u", mcdr.msclass_caplen);
4570
4571 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+50, 1, "MS network capability: %u", mcdr.msclass_cap);
4572                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4573                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+50, 1, mcdr.cap);
4574                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+50, 1, mcdr.cap);
4575                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+50, 1, mcdr.cap);
4576                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+50, 1, mcdr.cap);
4577                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+50, 1, mcdr.cap);
4578                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+50, 1, mcdr.cap);
4579                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+50, 1, mcdr.cap);
4580 */
4581                                 proto_tree_add_text(cdr_tree, tvb, offset+51, 2, "MS network capability omitted: %u", mcdr.msclass_capomit);
4582                                 proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "LAC: %u", mcdr.lac);
4583                                 proto_tree_add_text(cdr_tree, tvb, offset+55, 1, "RAC: %u", mcdr.rac);
4584                                 proto_tree_add_text(cdr_tree, tvb, offset+56, 2, "Cell ID: %u", mcdr.cid);
4585                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 1, "List of data volume changes: %u", mcdr.change_count);
4586                                 for (j=0;j<4;j++) {
4587                                         proto_tree_add_text(cdr_tree, tvb, offset+59+13*j, 2, "LAC: %u", mcdr.change[j].lac);
4588                                         proto_tree_add_text(cdr_tree, tvb, offset+61+13*j, 1, "RAC: %u", mcdr.change[j].rac);
4589                                         proto_tree_add_text(cdr_tree, tvb, offset+62+13*j, 2, "CID: %u", mcdr.change[j].cid);
4590                                         proto_tree_add_text(cdr_tree, tvb, offset+64+13*j, 8, "(omitted)");
4591                                 }
4592
4593                                 proto_tree_add_text(cdr_tree, tvb, offset+124, 4, "Timestamp: %s", time_int_to_str(mcdr.timestamp));
4594                                 proto_tree_add_text(cdr_tree, tvb, offset+128, 4, "Record opening time: %s", time_int_to_str(mcdr.opening));
4595                                 proto_tree_add_text(cdr_tree, tvb, offset+132, 4, "Duration: %s", rel_time_int_to_str(mcdr.duration));
4596                                 proto_tree_add_text(cdr_tree, tvb, offset+136, 1, "SGSN change: %u", mcdr.sgsnchange);
4597                                 proto_tree_add_text(cdr_tree, tvb, offset+137, 1, "Cause for close: %s (%u)", val_to_str(mcdr.closecause, cdr_close_type, "Unknown cause"), mcdr.closecause);
4598                                 proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "Diagnostics 1: %u", mcdr.diag1);
4599                                 proto_tree_add_text(cdr_tree, tvb, offset+139, 1, "Diagnostics 2: %u", mcdr.diag2);
4600                                 proto_tree_add_text(cdr_tree, tvb, offset+140, 1, "Diagnostics 3: %u", mcdr.diag3);
4601                                 proto_tree_add_text(cdr_tree, tvb, offset+141, 1, "Diagnostics 4: %u", mcdr.diag4);
4602                                 proto_tree_add_text(cdr_tree, tvb, offset+142, 4, "Diagnostics 5: %u", mcdr.diag5);
4603                                 proto_tree_add_text(cdr_tree, tvb, offset+146, 4, "Sequence number: %u", mcdr.seqno);
4604                                 break;
4605
4606                         case 0x15:              /* SOCDR */
4607                                 if (tvb_length_remaining(tvb, offset) < 3 + 80) {
4608                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SOCDR fragmented, can't dissect");
4609                                         break;
4610                                 }
4611
4612                                 socdr.len = tvb_get_ntohs(tvb, offset+3);
4613                                 socdr.imsilen = tvb_get_guint8(tvb, offset+5);
4614                                 tvb_memcpy(tvb, socdr.imsi, offset+6, 8);
4615                                 tvb_memcpy(tvb, socdr.imei, offset+14, 8);
4616                                 socdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4617                                 tvb_memcpy(tvb, socdr.msisdn, offset+23, 10);
4618                                 tvb_memcpy(tvb, socdr.msclass_notused, offset+33, 12);
4619                                 socdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
4620                                 socdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
4621                                 socdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
4622                                 tvb_memcpy(tvb, socdr.serv_centr, offset+49, 9);
4623                                 tvb_memcpy(tvb, socdr.rec_ent, offset+58, 9);
4624                                 socdr.lac = tvb_get_ntohs(tvb, offset+67);
4625                                 socdr.rac = tvb_get_guint8(tvb, offset+69);
4626                                 socdr.cid = tvb_get_ntohs(tvb, offset+70);
4627                                 socdr.time1 = tvb_get_ntohl(tvb, offset+72);
4628                                 socdr.time2 = tvb_get_ntohl(tvb, offset+76);
4629                                 socdr.messref = tvb_get_guint8(tvb, offset+80);
4630                                 socdr.smsres = tvb_get_ntohs(tvb, offset+81);
4631
4632                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SOCDR (0x15)");
4633                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4634                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4635                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4636                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", socdr.len);
4637                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", socdr.imsilen);
4638                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(socdr.imsi));
4639                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(socdr.imei));
4640                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", socdr.msisdnlen);
4641                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(socdr.msisdn, 10));
4642                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
4643                                 proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", socdr.msclass_caplen);
4644
4645 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", socdr.msclass_cap);
4646                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4647                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, socdr.cap);
4648                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, socdr.cap);
4649                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, socdr.cap);
4650                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, socdr.cap);
4651                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, socdr.cap);
4652                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, socdr.cap);
4653 */
4654                                 proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
4655                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(socdr.serv_centr, 9));
4656                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(socdr.rec_ent, 9));
4657                                 proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", socdr.lac);
4658                                 proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", socdr.rac);
4659                                 proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", socdr.cid);
4660                                 proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(socdr.time1));
4661                                 proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(socdr.time2));
4662                                 proto_tree_add_text(cdr_tree, tvb, offset+80, 1, "Message reference: %u", socdr.messref);
4663                                 proto_tree_add_text(cdr_tree, tvb, offset+81, 2, "Delivery result: %u", socdr.smsres);
4664                                 break;
4665
4666                         case 0x16:              /* STCDR */
4667                                 if (tvb_length_remaining(tvb, offset) < 3 + 79) {
4668                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "STCDR fragmented, can't dissect");
4669                                         break;
4670                                 }
4671
4672                                 stcdr.len = tvb_get_ntohs(tvb, offset+3);
4673                                 stcdr.imsilen = tvb_get_guint8(tvb, offset+5);
4674                                 tvb_memcpy(tvb, stcdr.imsi, offset+6, 8);
4675                                 tvb_memcpy(tvb, stcdr.imei, offset+14, 8);
4676                                 stcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4677                                 tvb_memcpy(tvb, stcdr.msisdn, offset+23, 10);
4678                                 tvb_memcpy(tvb, stcdr.msclass_notused, offset+33, 12);
4679                                 stcdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
4680                                 stcdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
4681                                 stcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
4682                                 tvb_memcpy(tvb, stcdr.serv_centr, offset+49, 9);
4683                                 tvb_memcpy(tvb, stcdr.rec_ent, offset+58, 9);
4684                                 stcdr.lac = tvb_get_ntohs(tvb, offset+67);
4685                                 stcdr.rac = tvb_get_guint8(tvb, offset+69);
4686                                 stcdr.cid = tvb_get_ntohs(tvb, offset+70);
4687                                 stcdr.time1 = tvb_get_ntohl(tvb, offset+72);
4688                                 stcdr.time2 = tvb_get_ntohl(tvb, offset+76);
4689                                 stcdr.smsres = tvb_get_ntohs(tvb, offset+80);
4690
4691                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "STCDR (0x16)");
4692                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4693                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4694                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4695                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", stcdr.len);
4696                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", stcdr.imsilen);
4697                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(stcdr.imsi));
4698                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(stcdr.imei));
4699                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", stcdr.msisdnlen);
4700                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(stcdr.msisdn, 10));
4701                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
4702                                 proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", stcdr.msclass_caplen);
4703
4704 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", stcdr.msclass_cap);
4705                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4706                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, stcdr.cap);
4707                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, stcdr.cap);
4708                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, stcdr.cap);
4709                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, stcdr.cap);
4710                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, stcdr.cap);
4711                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, stcdr.cap);
4712 */
4713                                 proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
4714                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(stcdr.serv_centr, 9));
4715                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(stcdr.rec_ent, 9));
4716                                 proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", stcdr.lac);
4717                                 proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", stcdr.rac);
4718                                 proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", stcdr.cid);
4719                                 proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(stcdr.time1));
4720                                 proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(stcdr.time2));
4721                                 proto_tree_add_text(cdr_tree, tvb, offset+80, 2, "Delivery result: %u", stcdr.smsres);
4722                                 break;
4723                 }
4724                 offset = offset + 2 + data_len;
4725         }
4726         }
4727         return 3+length;
4728 }
4729
4730 /* GPRS:        12.15
4731  * UMTS:        33.015
4732  */
4733 static int
4734 decode_gtp_data_resp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4735
4736         guint16         length, n, number;
4737         proto_tree      *ext_tree_data_resp;
4738         proto_item      *te;
4739
4740         length = tvb_get_ntohs(tvb, offset + 1);
4741
4742         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Requests responded");
4743         ext_tree_data_resp = proto_item_add_subtree(te, ett_gtp_data_resp);
4744
4745         n = 0;
4746
4747         while (n < length) {
4748
4749                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4750                 proto_tree_add_text(ext_tree_data_resp, tvb, offset + 3 + n, 2, "%u", number);
4751                 n = n + 2;
4752
4753         }
4754
4755         return 3 + length;
4756
4757 }
4758
4759 /* GPRS:        12.15
4760  * UMTS:        33.015
4761  */
4762 static int
4763 decode_gtp_node_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4764
4765         guint16         length;
4766         guint32         addr_ipv4;
4767         struct  e_in6_addr addr_ipv6;
4768         proto_tree      *ext_tree_node_addr;
4769         proto_item      *te;
4770
4771         length = tvb_get_ntohs(tvb, offset+1);
4772
4773         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Node address: ");
4774         ext_tree_node_addr = proto_item_add_subtree(te, ett_gtp_node_addr);
4775
4776         proto_tree_add_text(ext_tree_node_addr, tvb, offset+1, 2, "Node address length: %u", length);
4777
4778         switch (length) {
4779                 case 4:
4780                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
4781                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
4782                         proto_tree_add_ipv4(ext_tree_node_addr, gtp_version ? hf_gtpv1_node_ipv4 : hf_gtpv0_node_ipv4, tvb, offset+3, 4, addr_ipv4);
4783                         break;
4784                 case 16:
4785                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
4786                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
4787                         proto_tree_add_ipv6(ext_tree_node_addr, gtp_version ? hf_gtpv1_node_ipv6 : hf_gtpv0_node_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6);
4788                         break;
4789                 default:
4790                         proto_item_append_text(te, "unknown type or wrong length");
4791                         break;
4792         }
4793
4794         return 3 + length;
4795
4796 }
4797
4798 /* GPRS:        9.60 v7.6.0, chapter 7.9.26
4799  * UMTS:        29.060 v4.0, chapter 7.7.44
4800  */
4801 static int
4802 decode_gtp_priv_ext(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4803
4804         guint16         length, ext_id;
4805         gchar           ext_val[64];
4806         proto_tree      *ext_tree_priv_ext;
4807         proto_item      *te;
4808
4809         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_PRIV_EXT, gtp_val, "Unknown message"));
4810         ext_tree_priv_ext = proto_item_add_subtree(te, ett_gtp_ext);
4811
4812         length = tvb_get_ntohs(tvb, offset+1);
4813         if (length < 1) return 3+length;
4814
4815         ext_id = tvb_get_ntohs(tvb, offset+3);
4816         tvb_memcpy(tvb, ext_val, offset+5, length > 65 ? 63 : length-2);
4817         ext_val[length > 65 ? 64 : length-1] = '\0';
4818         proto_tree_add_uint(ext_tree_priv_ext, gtp_version ? hf_gtpv1_ext_id : hf_gtpv0_ext_id, tvb, offset+3, 2, ext_id);
4819         proto_tree_add_string(ext_tree_priv_ext, gtp_version ? hf_gtpv1_ext_val : hf_gtpv0_ext_val, tvb, offset+5, length-2, ext_val);
4820
4821         return 3+length;
4822 }
4823
4824 static int
4825 decode_gtp_unknown(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
4826
4827         proto_tree_add_text(tree, tvb, offset, 1, "Unknown extension header");
4828
4829         return tvb_length_remaining(tvb, offset);
4830 }
4831
4832 static void
4833 dissect_gtpv0(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
4834 {
4835
4836         _gtpv0_hdr      gtpv0_hdr;
4837         proto_item      *ti, *tf;
4838         proto_tree      *gtpv0_tree, *flags_tree;
4839         guint8          ext_hdr_val;
4840         tvbuff_t        *next_tvb;
4841         const guint8    *tid_val;
4842         gchar           *tid_str;
4843         int             offset, length, i, mandatory, checked_field, gtp_prime = 0;
4844
4845         if (check_col(pinfo->cinfo, COL_PROTOCOL))
4846                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
4847         if (check_col(pinfo->cinfo, COL_INFO))
4848                 col_clear(pinfo->cinfo, COL_INFO);
4849
4850         tvb_memcpy(tvb, (guint8 *)&gtpv0_hdr, 0, 12);
4851         tid_val = tvb_get_ptr(tvb, 12, 8);
4852         tid_str = id_to_str(tid_val);
4853         gtp_version = (gtpv0_hdr.flags >> 5) & 0x07;
4854
4855         if (!((gtpv0_hdr.flags >> 4) & 1)) {
4856                 gtp_prime = 1;
4857                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
4858                         col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-CDR");
4859         } else {
4860                 switch ((gtpv0_hdr.flags >> 5) & 0x07) {
4861                 case 0: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4862                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
4863                         break;
4864                 case 1: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4865                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv1");
4866                 default: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4867                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv?");
4868                         break;
4869                 }
4870         }
4871
4872         if (check_col(pinfo->cinfo, COL_INFO))
4873                 col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv0_hdr.message, message_type, "Unknown"));
4874
4875         if (tree) {
4876
4877                 /* dissect GTP header */
4878                 ti = proto_tree_add_item(tree, proto_gtpv0, tvb, 0, -1, FALSE);
4879                 gtpv0_tree = proto_item_add_subtree(ti, ett_gtp);
4880
4881                 tf = proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flags, tvb, 0, 1, gtpv0_hdr.flags);
4882
4883                 flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
4884                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_ver, tvb, 0, 1, gtpv0_hdr.flags);
4885                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_pt, tvb, 0, 1, gtpv0_hdr.flags);
4886                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_spare, tvb, 0, 1, gtpv0_hdr.flags);
4887                 proto_tree_add_boolean(flags_tree, hf_gtpv0_flags_snn, tvb, 0, 1, gtpv0_hdr.flags);
4888
4889                 gtpv0_hdr.length = g_ntohs(gtpv0_hdr.length);
4890                 gtpv0_hdr.seq_no = g_ntohs(gtpv0_hdr.seq_no);
4891                 gtpv0_hdr.flow_label = g_ntohs(gtpv0_hdr.flow_label);
4892                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_message_type, tvb, 1, 1, gtpv0_hdr.message);
4893                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_length, tvb, 2, 2, gtpv0_hdr.length);
4894                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_seq_number, tvb, 4, 2, gtpv0_hdr.seq_no);
4895
4896                 /* GTP' has 6 bytes of length */
4897                 if (!gtp_prime) {
4898                         proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flow_label, tvb, 6, 2, gtpv0_hdr.flow_label);
4899                         proto_tree_add_uint(gtpv0_tree, hf_gtpv0_sndcp_number, tvb, 8, 1, gtpv0_hdr.sndcp_no);
4900                         proto_tree_add_string(gtpv0_tree, hf_gtpv0_tid, tvb, 12, 8, tid_str);
4901                 }
4902
4903                 if (gtpv0_hdr.message != GTP_MSG_TPDU) {
4904
4905                         proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[--- end of GTPv0 header, beginning of extension headers ---]");
4906
4907                         offset = gtp_prime ? GTP_PRIME_HDR_LENGTH : GTPv0_HDR_LENGTH;
4908
4909                         length = tvb_length(tvb);
4910
4911                         mandatory = 0;          /* check order of GTP fields against ETSI */
4912
4913                         for (;;) {
4914
4915                                 if (offset >= length) break;
4916                                 ext_hdr_val = tvb_get_guint8(tvb, offset);
4917
4918                                 if (gtpv0_etsi_order) {
4919                                         checked_field = check_field_presence (gtpv0_hdr.message, ext_hdr_val , (int *)&mandatory);
4920                                         switch (checked_field) {
4921                                                 case -2: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] message not found");
4922                                                          break;
4923                                                 case -1: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] field not present");
4924                                                          break;
4925                                                 case 0:  break;
4926                                                 default: proto_tree_add_text(gtpv0_tree, tvb, offset, 1, "[WARNING] wrong next field, should be: %s", val_to_str(checked_field, gtp_val, "Unknown extension field"));
4927                                         }
4928                                 }
4929
4930                                 i = -1;
4931                                 while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
4932                                 offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv0_tree);
4933                         }
4934                 }
4935         }
4936
4937 /* next part dissects sublayers of GTP */
4938
4939         if ((gtpv0_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
4940                 guint8 sub_proto;
4941
4942                 sub_proto = tvb_get_guint8(tvb,GTPv0_HDR_LENGTH);
4943
4944                 if ((sub_proto >= 0x45) &&  (sub_proto <= 0x4e)) {
4945                     /* this is most likely an IPv4 packet */
4946                     /* we can exclude 0x40 - 0x44 because the minimum header size is 20 octets */
4947                     /* 0x4f is excluded because PPP protocol type "IPv6 header compression"
4948                        with protocol field compression is more likely than a plain IPv4 packet with 60 octet header size */
4949
4950                     next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH, -1, -1);
4951                     call_dissector(ip_handle, next_tvb, pinfo, tree);
4952                 } else
4953                 if ((sub_proto & 0xf0) == 0x60) {
4954                     /* this is most likely an IPv6 packet */
4955                     next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH, -1, -1);
4956                     call_dissector(ipv6_handle, next_tvb, pinfo, tree);
4957                 } else {
4958                     /* this seems to be a PPP packet */
4959                     guint8 acfield_len = 0;
4960
4961                     if (sub_proto == 0xff) {
4962                         /* this might be an address field, even it shouldn't be here */
4963                         guint8 control_field = tvb_get_guint8(tvb,GTPv0_HDR_LENGTH + 1);
4964                         if (control_field == 0x03) {
4965                             /* now we are pretty sure that address and control field are mistakenly inserted -> ignore it for PPP dissection */
4966                             acfield_len = 2;
4967                         }
4968                     }
4969                     next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH + acfield_len, -1, -1);
4970                     call_dissector(ppp_handle, next_tvb, pinfo, tree);
4971                 }
4972             if (check_col(pinfo->cinfo, COL_PROTOCOL))
4973                     col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP");
4974         }
4975 }
4976
4977 /* GTP v1 dissector */
4978 static void
4979 dissect_gtpv1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
4980
4981         _gtpv1_hdr      gtpv1_hdr;
4982         proto_item      *ti, *tf;
4983         proto_tree      *gtpv1_tree, *flags_tree;
4984         guint16         seq_no;
4985         guint8          ext_hdr_val, i, hdr_offset = 4, next_hdr, npdu_no, sub_proto;
4986         tvbuff_t        *next_tvb;
4987         int             offset, length, mandatory, checked_field, gtp_prime = 0;
4988
4989         if (check_col(pinfo->cinfo, COL_PROTOCOL))
4990                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-C");
4991         if (check_col(pinfo->cinfo, COL_INFO))
4992                 col_clear(pinfo->cinfo, COL_INFO);
4993
4994         tvb_memcpy(tvb, (guint8 *)&gtpv1_hdr, 0, 8);
4995         gtp_version = (gtpv1_hdr.flags >> 5) & 0x07;
4996
4997         if (check_col(pinfo->cinfo, COL_INFO))
4998                 col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv1_hdr.message, message_type, "Unknown"));
4999
5000         if (tree) {
5001
5002                 ti = proto_tree_add_item(tree, proto_gtpv1, tvb, 0, -1, FALSE);
5003                 gtpv1_tree = proto_item_add_subtree(ti, ett_gtp);
5004
5005                 tf = proto_tree_add_uint(gtpv1_tree, hf_gtpv1_flags, tvb, 0, 1, gtpv1_hdr.flags);
5006                 flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
5007
5008                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_ver, tvb, 0, 1, gtpv1_hdr.flags);
5009                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_pt, tvb, 0, 1, gtpv1_hdr.flags);
5010                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_spare, tvb, 0, 1, gtpv1_hdr.flags);
5011                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_e, tvb, 0, 1, gtpv1_hdr.flags);
5012                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_s, tvb, 0, 1, gtpv1_hdr.flags);
5013                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_pn, tvb, 0, 1, gtpv1_hdr.flags);
5014
5015                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_message_type, tvb, 1, 1, gtpv1_hdr.message);
5016
5017                 gtpv1_hdr.length = g_ntohs(gtpv1_hdr.length);
5018                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_length, tvb, 2, 2, gtpv1_hdr.length);
5019
5020                 gtp_prime = (gtpv1_hdr.flags & 0x01) >> 4;
5021
5022                 /* GTP' has 6 bytes of length */
5023
5024                 if (!gtp_prime) {
5025
5026                         gtpv1_hdr.teid = g_ntohl(gtpv1_hdr.teid);
5027                         proto_tree_add_uint(gtpv1_tree, hf_gtpv1_teid, tvb, 4, 4, gtpv1_hdr.teid);
5028
5029                         if (gtpv1_hdr.flags & 0x07) {
5030                                 seq_no = tvb_get_ntohs (tvb, 8);
5031                                 proto_tree_add_uint (gtpv1_tree, hf_gtpv1_seq_number, tvb, 8, 2, seq_no);
5032                                 npdu_no = tvb_get_guint8 (tvb, 10);
5033                                 proto_tree_add_uint (gtpv1_tree, hf_gtpv1_npdu_number, tvb, 10, 1, npdu_no);
5034                                 next_hdr = tvb_get_guint8(tvb, 11);
5035                                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_next, tvb, 11, 1, next_hdr);
5036                                 hdr_offset = 0;
5037
5038                                 if (next_hdr) hdr_offset = 1;
5039                                 else hdr_offset = 0;
5040                         }
5041                 }
5042
5043                 if (gtpv1_hdr.message != GTP_MSG_TPDU) {
5044
5045                         proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[--- end of GTP v1 header, beginning of extension headers ---]");
5046
5047                         offset = gtp_prime ? GTP_PRIME_HDR_LENGTH: GTPv1_HDR_LENGTH - hdr_offset;
5048                         length = tvb_length(tvb);
5049
5050                         mandatory = 0;          /* check order of GTP fields against ETSI */
5051
5052                         for (;;) {
5053
5054                                 if (offset >= length) break;
5055                                 ext_hdr_val = tvb_get_guint8(tvb, offset);
5056
5057                                 if (gtpv1_etsi_order) {
5058                                         checked_field = check_field_presence (gtpv1_hdr.message, ext_hdr_val , (int *)&mandatory);
5059                                         switch (checked_field) {
5060                                                 case -2: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] message not found");
5061                                                          break;
5062                                                 case -1: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] field not present");
5063                                                          break;
5064                                                 case 0:  break;
5065                                                 default: proto_tree_add_text(gtpv1_tree, tvb, offset, 1, "[WARNING] wrong next field, should be: %s", val_to_str(checked_field, gtp_val, "Unknown extension field"));
5066                                         }
5067                                 }
5068
5069                                 i = -1;
5070                                 while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
5071                                 offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv1_tree);
5072                         }
5073                 }
5074         }
5075
5076         if (gtpv1_hdr.message == GTP_MSG_ERR_IND)
5077                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
5078                         col_add_str(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
5079
5080
5081         if ((gtpv1_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
5082
5083                 if (gtpv1_hdr.flags & 0x07) {
5084                         if (tvb_get_guint8 (tvb, 11))
5085                                 hdr_offset = 1;         /* if next_hdr != 0 */
5086                         else
5087                                 hdr_offset = 0;
5088                 }
5089
5090                 sub_proto = tvb_get_guint8(tvb,GTPv1_HDR_LENGTH - hdr_offset);
5091
5092                 if ((sub_proto >= 0x45) &&  (sub_proto <= 0x4e)) {
5093                     /* this is most likely an IPv4 packet */
5094                     /* we can exclude 0x40 - 0x44 because the minimum header size is 20 octets */
5095                     /* 0x4f is excluded because PPP protocol type "IPv6 header compression"
5096                        with protocol field compression is more likely than a plain IPv4 packet with 60 octet header size */
5097
5098                     next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset, -1, -1);
5099                     call_dissector(ip_handle, next_tvb, pinfo, tree);
5100                 } else
5101                 if ((sub_proto & 0xf0) == 0x60)
5102                 {
5103                     /* this is most likely an IPv6 packet */
5104                     next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset, -1, -1);
5105                     call_dissector(ipv6_handle, next_tvb, pinfo, tree);
5106                 } else {
5107                     /* this seems to be a PPP packet */
5108                     guint8 acfield_len = 0;
5109
5110                     if (sub_proto == 0xff) {
5111                         /* this might be an address field, even it shouldn't be here */
5112                         guint8 control_field;
5113                         control_field = tvb_get_guint8(tvb,GTPv1_HDR_LENGTH - hdr_offset + 1);
5114                         if (control_field == 0x03)
5115                         {
5116                             /* now we are pretty sure that address and control field are mistakenly inserted -> ignore it for PPP dissection */
5117                             acfield_len = 2;
5118                         }
5119                     }
5120                     next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset + acfield_len, -1, -1);
5121                     call_dissector(ppp_handle, next_tvb, pinfo, tree);
5122                 }
5123             if (check_col(pinfo->cinfo, COL_PROTOCOL))
5124                     col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
5125         }
5126 }
5127
5128 static const true_false_string yes_no_tfs = {
5129         "yes" ,
5130         "no"
5131 };
5132
5133 void
5134 proto_register_gtp(void)
5135 {
5136
5137         static hf_register_info hf_gtpv0[] = {
5138
5139         { &hf_gtpv0_flags,              { "Flags",              "gtpv0.flags",                  FT_UINT8,       BASE_HEX, NULL, 0, "Ver/PT/Spare/SNN", HFILL }},
5140         { &hf_gtpv0_flags_ver,          { "Version",            "gtpv0.flags.version",          FT_UINT8,       BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
5141         { &hf_gtpv0_flags_pt,           { "Protocol type",      "gtpv0.flags.payload",          FT_UINT8,       BASE_DEC, NULL, GTP_PT_MASK, "Protocol Type (1 = GTP, 0 = GTP' )", HFILL }},
5142         { &hf_gtpv0_flags_spare,                { "Reserved",           "gtpv0.flags.reserved",         FT_UINT8,       BASE_DEC, NULL, GTP_SPARE_MASK, "Reserved (shall be sent as '111' )", HFILL }},
5143         { &hf_gtpv0_flags_snn,          { "Is SNDCP N-PDU included?", "gtpv0.flags.snn",        FT_BOOLEAN,     8, TFS(&yes_no_tfs), GTP_SNN_MASK, "Is SNDCP N-PDU LLC Number included? (1 = yes, 0 = no)", HFILL }},
5144         { &hf_gtpv0_message_type,               { "Message type",       "gtpv0.message",                FT_UINT8,       BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
5145         { &hf_gtpv0_length,             { "Length",             "gtpv0.length",                 FT_UINT16,      BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
5146         { &hf_gtpv0_seq_number,         { "Sequence number",    "gtpv0.seq_number",             FT_UINT16,      BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
5147         { &hf_gtpv0_flow_label,         { "Flow label",         "gtpv0.flow_label",             FT_UINT16,      BASE_HEX, NULL, 0, "Flow label", HFILL }},
5148         { &hf_gtpv0_sndcp_number,               { "SNDCP N-PDU LLC Number", "gtpv0.sndcp_number",               FT_UINT8,       BASE_HEX, NULL, 0, "SNDCP N-PDU LLC Number", HFILL }},
5149         { &hf_gtpv0_tid,                        { "TID",                "gtpv0.tid",                    FT_STRING,      BASE_DEC, NULL, 0, "Tunnel Identifier", HFILL }},
5150         { &hf_gtpv0_cause,              { "Cause",              "gtpv0.cause",                  FT_UINT8,       BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
5151         { &hf_gtpv0_imsi,                       { "IMSI",               "gtpv0.imsi",                   FT_STRING,      BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
5152         { &hf_gtpv0_rai_mcc,            { "MCC",                "gtpv0.mcc",                    FT_UINT16,      BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
5153         { &hf_gtpv0_rai_mnc,            { "MNC",                "gtpv0.mnc",                    FT_UINT8,       BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
5154         { &hf_gtpv0_rai_rac,            { "RAC",                "gtpv0.rac",                    FT_UINT8,       BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
5155         { &hf_gtpv0_rai_lac,            { "LAC",                "gtpv0.lac",                    FT_UINT16,      BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
5156         { &hf_gtpv0_tlli,                       { "TLLI",               "gtpv0.tlli",                   FT_UINT32,      BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
5157         { &hf_gtpv0_ptmsi,              { "P-TMSI",             "gtpv0.ptmsi",                  FT_UINT32,      BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
5158         { &hf_gtpv0_qos_spare1,         { "Spare",              "gtpv0.qos_spare1",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE1_MASK, "Spare (shall be sent as '00' )", HFILL }},
5159         { &hf_gtpv0_qos_delay,          { "QoS delay",          "gtpv0.qos_delay",              FT_UINT8,       BASE_DEC, VALS(qos_delay_type), GTP_EXT_QOS_DELAY_MASK, "Quality of Service Delay Class", HFILL }},
5160         { &hf_gtpv0_qos_reliability,    { "QoS reliability",    "gtpv0.qos_reliabilty",         FT_UINT8,       BASE_DEC, VALS(qos_reliability_type), GTP_EXT_QOS_RELIABILITY_MASK, "Quality of Service Reliability Class", HFILL }},
5161         { &hf_gtpv0_qos_peak,           { "QoS peak",           "gtpv0.qos_peak",               FT_UINT8,       BASE_DEC, VALS(qos_peak_type), GTP_EXT_QOS_PEAK_MASK, "Quality of Service Peak Throughput", HFILL }},
5162         { &hf_gtpv0_qos_spare2,         { "Spare",              "gtpv0.qos_spare2",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE2_MASK, "Spare (shall be sent as 0)", HFILL }},
5163         { &hf_gtpv0_qos_precedence,     { "QoS precedence",     "gtpv0.qos_precedence",         FT_UINT8,       BASE_DEC, VALS(qos_precedence_type), GTP_EXT_QOS_PRECEDENCE_MASK, "Quality of Service Precedence Class", HFILL }},
5164         { &hf_gtpv0_qos_spare3,         { "Spare",              "gtpv0.qos_spare3",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE3_MASK, "Spare (shall be sent as '000' )", HFILL }},
5165         { &hf_gtpv0_qos_mean,           { "QoS mean",           "gtpv0.qos_mean",               FT_UINT8,       BASE_DEC, VALS(qos_mean_type), GTP_EXT_QOS_MEAN_MASK, "Quality of Service Mean Throughput", HFILL }},
5166         { &hf_gtpv0_reorder,            { "Reordering required","gtpv0.reorder",                FT_BOOLEAN,     BASE_NONE,NULL, 0, "Reordering required", HFILL }},
5167         { &hf_gtpv0_map_cause,          { "MAP cause",          "gtpv0.map_cause",              FT_UINT8,       BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
5168         { &hf_gtpv0_ptmsi_sig,          { "P-TMSI signature",   "gtpv0.ptmsi_sig",              FT_UINT24,      BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
5169         { &hf_gtpv0_ms_valid,           { "MS validated",       "gtpv0.ms_valid",               FT_BOOLEAN,     BASE_NONE,NULL, 0, "MS validated", HFILL }},
5170         { &hf_gtpv0_recovery,           { "Recovery",           "gtpv0.recovery",               FT_UINT8,       BASE_DEC, NULL, 0, "Restart counter", HFILL }},
5171         { &hf_gtpv0_sel_mode,           { "Selection mode",     "gtpv0.sel_mode",               FT_UINT8,       BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
5172         { &hf_gtpv0_ext_flow_label,     { "Flow Label Data I",  "gtpv0.ext_flow_label",         FT_UINT16,      BASE_HEX, NULL, 0, "Flow label data", HFILL }},
5173         { &hf_gtpv0_flow_sig,           { "Flow label Signalling",      "gtpv0.flow_sig",       FT_UINT16,      BASE_HEX, NULL, 0, "Flow label signalling", HFILL }},
5174         { &hf_gtpv0_nsapi,              { "NSAPI ",             "gtpv0.nsapi",                  FT_UINT8,       BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
5175         { &hf_gtpv0_flow_ii,            { "Flow Label Data II ","gtpv0.flow_ii",                FT_UINT16,      BASE_DEC, NULL, 0, "Downlink flow label data", HFILL }},
5176         { &hf_gtpv0_ms_reason,          { "MS not reachable reason",    "gtpv0.ms_reason",      FT_UINT8,       BASE_DEC, VALS(ms_not_reachable_type), 0, "MS Not Reachable Reason", HFILL }},
5177         { &hf_gtpv0_tr_comm,            { "Packet transfer command",    "gtpv0.tr_comm",        FT_UINT8,       BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
5178         { &hf_gtpv0_chrg_id,            { "Charging ID ",       "gtpv0.chrg_id",                FT_UINT32,      BASE_HEX, NULL, 0, "Charging ID", HFILL }},
5179         { &hf_gtpv0_user_ipv4,          { "End user address IPv4",      "gtpv0.user_ipv4",      FT_IPv4,        BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
5180         { &hf_gtpv0_user_ipv6,          { "End user address IPv6",      "gtpv0.user_ipv6",      FT_IPv6,        BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
5181         { &hf_gtpv0_user_addr_pdp_org,  { "PDP type organization",      "gtpv0.user_addr_pdp_org",      FT_UINT8,       BASE_DEC, VALS(pdp_org_type), 0, "PDP type organization", HFILL }},
5182         { &hf_gtpv0_user_addr_pdp_type, { "PDP type number",    "gtpv0.user_addr_pdp_type",     FT_UINT8,       BASE_HEX, VALS(pdp_type), 0, "PDP type", HFILL }},
5183         { &hf_gtpv0_apn,                        { "APN",                "gtpv0.apn",                    FT_STRING,      BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
5184         { &hf_gtpv0_gsn_addr_type,      { "GSN address type",   "gtpv0.gsn_addr_type",          FT_UINT8,       BASE_DEC, VALS(gsn_addr_type), GTP_EXT_GSN_ADDR_TYPE_MASK, "GSN Address Type", HFILL }},
5185         { &hf_gtpv0_gsn_addr_len,               { "GSN address length", "gtpv0.gsn_addr_len",           FT_UINT8,       BASE_DEC, NULL, GTP_EXT_GSN_ADDR_LEN_MASK, "GSN Address Length", HFILL }},
5186         { &hf_gtpv0_gsn_ipv4,           { "GSN address IPv4",   "gtpv0.gsn_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
5187         { &hf_gtpv0_gsn_ipv6,           { "GSN address IPv6",   "gtpv0.gsn_ipv6",               FT_IPv6,        BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
5188         { &hf_gtpv0_msisdn,             { "MSISDN",             "gtpv0.msisdn",                 FT_STRING,      BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
5189         { &hf_gtpv0_chrg_ipv4,          { "CG address IPv4",    "gtpv0.chrg_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
5190         { &hf_gtpv0_chrg_ipv6,          { "CG address IPv6",    "gtpv0.chrg_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
5191         { &hf_gtpv0_node_ipv4,          { "Node address IPv4",  "gtpv0.node_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
5192         { &hf_gtpv0_node_ipv6,          { "Node address IPv6",  "gtpv0.node_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
5193         { &hf_gtpv0_ext_id,             { "Extension identifier",       "gtpv0.ext_id",         FT_UINT16,      BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
5194         { &hf_gtpv0_ext_val,            { "Extension value",            "gtpv0.ext_val",        FT_STRING,      BASE_DEC, NULL, 0, "Extension Value", HFILL }},
5195         { &hf_gtpv0_unknown,            { "Unknown data (length)",      "gtpv0.unknown",        FT_UINT16,      BASE_DEC, NULL, 0, "Unknown data", HFILL }},
5196
5197         };
5198
5199
5200         static hf_register_info hf_gtpv1[] = {
5201
5202         { &hf_gtpv1_flags,              { "Flags",              "gtpv1.flags",                  FT_UINT8,       BASE_HEX, NULL, 0, "Ver/PT/Spare/E/S/PN", HFILL }},
5203         { &hf_gtpv1_flags_ver,          { "Version",            "gtpv1.flags.version",          FT_UINT8,       BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
5204         { &hf_gtpv1_flags_pt,           { "Protocol type",      "gtpv1.flags.payload_type",     FT_UINT8,       BASE_DEC, NULL, GTP_PT_MASK, "Protocol Type (1 = GTP, 0 = GPRS charging protocol : GTP' )", HFILL }},
5205         { &hf_gtpv1_flags_spare,                { "Spare bit",          "gtpv1.flags.spare",            FT_UINT8,       BASE_DEC, NULL, GTPv1_SPARE_MASK, "Spare bit (shall be sent as 0)", HFILL }},
5206         { &hf_gtpv1_flags_e,            { "Is Next Extension Header present?",  "gtpv1.flags.e",                FT_BOOLEAN,     8, TFS(&yes_no_tfs), GTPv1_E_MASK, "Is Next Extension Header present? (1 = yes, 0 = no)", HFILL }},
5207         { &hf_gtpv1_flags_s,            { "Is Sequence Number present?",        "gtpv1.flags.s",                FT_BOOLEAN,     8, TFS(&yes_no_tfs), GTPv1_S_MASK, "Is Sequence Number present? (1 = yes, 0 = no)", HFILL }},
5208         { &hf_gtpv1_flags_pn,           { "Is N-PDU number present?",   "gtpv1.flags.pn",               FT_BOOLEAN,     8, TFS(&yes_no_tfs), GTPv1_PN_MASK, "Is N-PDU number present? (1 = yes, 0 = no)", HFILL }},
5209         { &hf_gtpv1_message_type,               { "Message Type",       "gtpv1.message",                FT_UINT8,       BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
5210         { &hf_gtpv1_length,             { "Length",             "gtpv1.length",                 FT_UINT16,      BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
5211         { &hf_gtpv1_seq_number,         { "Sequence Number",    "gtpv1.seq_number",             FT_UINT16,      BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
5212         { &hf_gtpv1_teid,                       { "TEID",               "gtpv1.teid",                   FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier", HFILL }},
5213         { &hf_gtpv1_npdu_number,                { "N-PDU Number",       "gtpv1.npdu_number",            FT_UINT8,       BASE_HEX, NULL, 0, "N-PDU Number", HFILL }},
5214         { &hf_gtpv1_next,                       { "Next extension header type", "gtpv1.next",           FT_UINT8,       BASE_HEX, NULL, 0, "Next Extension Header Type", HFILL }},
5215         { &hf_gtpv1_cause,              { "Cause ",             "gtpv1.cause",                  FT_UINT8,       BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
5216         { &hf_gtpv1_imsi,                       { "IMSI",               "gtpv1.imsi",                   FT_STRING,      BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
5217         { &hf_gtpv1_rai_mcc,            { "MCC",                "gtpv1.mcc",                    FT_UINT16,      BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
5218         { &hf_gtpv1_rai_mnc,            { "MNC",                "gtpv1.mnc",                    FT_UINT8,       BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
5219         { &hf_gtpv1_rai_rac,            { "RAC",                "gtpv1.rac",                    FT_UINT8,       BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
5220         { &hf_gtpv1_rai_lac,            { "LAC",                "gtpv1.lac",                    FT_UINT16,      BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
5221         { &hf_gtpv1_tlli,                       { "TLLI",               "gtpv1.tlli",                   FT_UINT32,      BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
5222         { &hf_gtpv1_ptmsi,              { "P-TMSI",             "gtpv1.ptmsi",                  FT_UINT32,      BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
5223         { &hf_gtpv1_qos_spare1,         { "Spare",              "gtpv1.qos_spare1",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE1_MASK, "Spare (shall be sent as '00' )", HFILL }},
5224         { &hf_gtpv1_qos_delay,          { "QoS Delay",          "gtpv1.qos_delay",              FT_UINT8,       BASE_DEC, VALS(qos_delay_type), GTP_EXT_QOS_DELAY_MASK, "Quality of Service Delay Class", HFILL }},
5225         { &hf_gtpv1_qos_reliability,    { "QoS Reliability",    "gtpv1.qos_reliabilty",         FT_UINT8,       BASE_DEC, VALS(qos_reliability_type), GTP_EXT_QOS_RELIABILITY_MASK, "Quality of Service Reliability Class", HFILL }},
5226         { &hf_gtpv1_qos_peak,           { "QoS Peak",           "gtpv1.qos_peak",               FT_UINT8,       BASE_DEC, VALS(qos_peak_type), GTP_EXT_QOS_PEAK_MASK, "Quality of Service Peak Throughput", HFILL }},
5227         { &hf_gtpv1_qos_spare2,         { "Spare",              "gtpv1.qos_spare2",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE2_MASK, "Spare (shall be sent as 0)", HFILL }},
5228         { &hf_gtpv1_qos_precedence,     { "QoS Precedence",     "gtpv1.qos_precedence",         FT_UINT8,       BASE_DEC, VALS(qos_precedence_type), GTP_EXT_QOS_PRECEDENCE_MASK, "Quality of Service Precedence Class", HFILL }},
5229         { &hf_gtpv1_qos_spare3,         { "Spare",              "gtpv1.qos_spare3",             FT_UINT8,       BASE_DEC, NULL, GTP_EXT_QOS_SPARE3_MASK, "Spare (shall be sent as '000' )", HFILL }},
5230         { &hf_gtpv1_qos_mean,           { "QoS Mean",           "gtpv1.qos_mean",               FT_UINT8,       BASE_DEC, VALS(qos_mean_type), GTP_EXT_QOS_MEAN_MASK, "Quality of Service Mean Throughput", HFILL }},
5231         { &hf_gtpv1_reorder,            { "Reordering required","gtpv1.reorder",                FT_BOOLEAN,     BASE_NONE,NULL, 0, "Reordering required", HFILL }},
5232         { &hf_gtpv1_map_cause,          { "MAP cause",          "gtpv1.map_cause",              FT_UINT8,       BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
5233         { &hf_gtpv1_ptmsi_sig,          { "P-TMSI Signature",   "gtpv1.ptmsi_sig",              FT_UINT24,      BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
5234         { &hf_gtpv1_ms_valid,           { "MS validated",       "gtpv1.ms_valid",               FT_BOOLEAN,     BASE_NONE,NULL, 0, "MS validated", HFILL }},
5235         { &hf_gtpv1_recovery,           { "Recovery",           "gtpv1.recovery",               FT_UINT8,       BASE_DEC, NULL, 0, "Restart counter", HFILL }},
5236         { &hf_gtpv1_sel_mode,           { "Selection Mode",     "gtpv1.sel_mode",               FT_UINT8,       BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
5237         { &hf_gtpv1_teid_data,          { "TEID Data I",        "gtpv1.teid_data",              FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data I", HFILL }},
5238         { &hf_gtpv1_teid_cp,            { "TEID Control Plane", "gtpv1.teid_cp",                FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Control Plane", HFILL }},
5239         { &hf_gtpv1_nsapi,              { "NSAPI",              "gtpv1.nsapi",                  FT_UINT8,       BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
5240         { &hf_gtpv1_teid_ii,            { "TEID Data II",       "gtpv1.teid_ii",                FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data II", HFILL }},
5241         { &hf_gtpv1_tear_ind,           { "Teardown Indicator","gtpv1.tear_ind",                FT_BOOLEAN,     BASE_NONE,NULL, 0, "Teardown Indicator", HFILL }},
5242         { &hf_gtpv1_ranap_cause,                { "RANAP cause",        "gtpv1.ranap_cause",            FT_UINT8,       BASE_DEC, VALS(ranap_cause_type), 0, "RANAP cause", HFILL }},
5243         { &hf_gtpv1_rab_gtpu_dn,                { "Downlink GTP-U seq number",  "gtpv1.rab_gtp_dn",     FT_UINT16,      BASE_DEC, NULL, 0, "Downlink GTP-U sequence number", HFILL }},
5244         { &hf_gtpv1_rab_gtpu_up,                { "Uplink GTP-U seq number",    "gtpv1.rab_gtp_up",     FT_UINT16,      BASE_DEC, NULL, 0, "Uplink GTP-U sequence number", HFILL }},
5245         { &hf_gtpv1_rab_pdu_dn,         { "Downlink next PDCP-PDU seq number",  "gtpv1.rab_pdu_dn",             FT_UINT8,       BASE_DEC, NULL, 0, "Downlink next PDCP-PDU sequence number", HFILL }},
5246         { &hf_gtpv1_rab_pdu_up,         { "Uplink next PDCP-PDU seq number",    "gtpv1.rab_pdu_up",             FT_UINT8,       BASE_DEC, NULL, 0, "Uplink next PDCP-PDU sequence number", HFILL }},
5247         { &hf_gtpv1_rp_sms,             { "Radio Priority SMS", "gtpv1.rp_sms",                 FT_UINT8,       BASE_DEC, NULL, 0, "Radio Priority for MO SMS", HFILL }},
5248         { &hf_gtpv1_rp_nsapi,           { "NSAPI in Radio Priority",    "gtpv1.rp_nsapi",       FT_UINT8,       BASE_DEC, NULL, GTPv1_EXT_RP_NSAPI_MASK, "Network layer Service Access Point Identifier in Radio Priority", HFILL }},
5249         { &hf_gtpv1_rp_spare,           { "Reserved",           "gtpv1.rp_spare",               FT_UINT8,       BASE_DEC, NULL, GTPv1_EXT_RP_SPARE_MASK, "Spare bit", HFILL }},
5250         { &hf_gtpv1_rp,                 { "Radio Priority",     "gtpv1.rp",                     FT_UINT8,       BASE_DEC, NULL, GTPv1_EXT_RP_MASK, "Radio Priority for uplink tx", HFILL }},
5251         { &hf_gtpv1_pkt_flow_id,                { "Packet Flow ID",     "gtpv1.pkt_flow_id",            FT_UINT8,       BASE_DEC, NULL, 0, "Packet Flow ID", HFILL }},
5252         { &hf_gtpv1_chrg_char_s,                { "Spare",              "gtpv1.chrg_char_s",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_S, "Spare", HFILL }},
5253         { &hf_gtpv1_chrg_char_n,                { "Normal charging",    "gtpv1.chrg_char_n",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_N, "Normal charging", HFILL }},
5254         { &hf_gtpv1_chrg_char_p,                { "Prepaid charging",   "gtpv1.chrg_char_p",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_P, "Prepaid charging", HFILL }},
5255         { &hf_gtpv1_chrg_char_f,                { "Flat rate charging", "gtpv1.chrg_char_f",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_F, "Flat rate charging", HFILL }},
5256         { &hf_gtpv1_chrg_char_h,                { "Hot billing charging",       "gtpv1.chrg_char_h",    FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_H, "Hot billing charging", HFILL }},
5257         { &hf_gtpv1_chrg_char_r,                { "Reserved",           "gtpv1.chrg_char_r",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_R, "Reserved", HFILL }},
5258         { &hf_gtpv1_trace_ref,          { "Trace reference",    "gtpv1.trace_ref",              FT_UINT16,      BASE_HEX, NULL, 0, "Trace reference", HFILL }},
5259         { &hf_gtpv1_trace_type,         { "Trace type",         "gtpv1.trace_type",             FT_UINT16,      BASE_HEX, NULL, 0, "Trace type", HFILL }},
5260         { &hf_gtpv1_ms_reason,          { "MS not reachable reason",    "gtpv1.ms_reason",      FT_UINT8,       BASE_DEC, VALS(ms_not_reachable_type), 0, "MS not reachable reason", HFILL }},
5261         { &hf_gtpv1_tr_comm,            { "Packet transfer command",    "gtpv1.tr_comm",        FT_UINT8,       BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
5262         { &hf_gtpv1_chrg_id,            { "Charging ID",        "gtpv1.chrg_id",                FT_UINT32,      BASE_HEX, NULL, 0, "Charging ID", HFILL }},
5263         { &hf_gtpv1_user_ipv4,          { "End user address IPv4",      "gtpv1.user_ipv4",      FT_IPv4,        BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
5264         { &hf_gtpv1_user_ipv6,          { "End user address IPv6",      "gtpv1.user_ipv6",      FT_IPv6,        BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
5265         { &hf_gtpv1_user_addr_pdp_org,  { "PDP type organization",      "gtpv1.user_addr_pdp_org",      FT_UINT8,       BASE_DEC, VALS(pdp_org_type), 0, "PDP type organization", HFILL }},
5266         { &hf_gtpv1_user_addr_pdp_type, { "PDP type number",    "gtpv1.user_addr_pdp_type",     FT_UINT8,       BASE_HEX, VALS(pdp_type), 0, "PDP type", HFILL }},
5267         { &hf_gtpv1_apn,                        { "APN",                "gtpv1.apn",                    FT_STRING,      BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
5268         { &hf_gtpv1_gsn_addr_type,      { "GSN Address Type",   "gtpv1.gsn_addr_type",          FT_UINT8,       BASE_DEC, VALS(gsn_addr_type), GTP_EXT_GSN_ADDR_TYPE_MASK, "GSN Address Type", HFILL }},
5269         { &hf_gtpv1_gsn_addr_len,               { "GSN Address Length", "gtpv1.gsn_addr_len",           FT_UINT8,       BASE_DEC, NULL, GTP_EXT_GSN_ADDR_LEN_MASK, "GSN Address Length", HFILL }},
5270         { &hf_gtpv1_gsn_ipv4,           { "GSN address IPv4",   "gtpv1.gsn_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
5271         { &hf_gtpv1_gsn_ipv6,           { "GSN address IPv6",   "gtpv1.gsn_ipv6",               FT_IPv6,        BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
5272         { &hf_gtpv1_msisdn,             { "MSISDN",             "gtpv1.msisdn",                 FT_STRING,      BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
5273         { &hf_gtpv1_qos_al_ret_priority,        { "Allocation/Retention priority ","gtpv1.qos_al_ret_priority",         FT_UINT8,       BASE_DEC, NULL, 0, "Allocation/Retention Priority", HFILL }},
5274         { &hf_gtpv1_qos_traf_class,     { "Traffic class",      "gtpv1.qos_traf_class",         FT_UINT8,       BASE_DEC, VALS(qos_traf_class), GTP_EXT_QOS_TRAF_CLASS_MASK, "Traffic Class", HFILL }},
5275         { &hf_gtpv1_qos_del_order,      { "Delivery order",     "gtpv1.qos_del_order",          FT_UINT8,       BASE_DEC, VALS(qos_del_order), GTP_EXT_QOS_DEL_ORDER_MASK, "Delivery Order", HFILL }},
5276         { &hf_gtpv1_qos_del_err_sdu,    { "Delivery of erroneous SDU",  "gtpv1.qos_del_err_sdu",        FT_UINT8,       BASE_DEC, VALS(qos_del_err_sdu), GTP_EXT_QOS_DEL_ERR_SDU_MASK, "Delivery of Erroneous SDU", HFILL }},
5277         { &hf_gtpv1_qos_max_sdu_size,   { "Maximum SDU size",   "gtpv1.qos_max_sdu_size",       FT_UINT8,       BASE_DEC, VALS(qos_max_sdu_size), 0, "Maximum SDU size", HFILL }},
5278         { &hf_gtpv1_qos_max_ul,                 { "Maximum bit rate for uplink",        "gtpv1.qos_max_ul",     FT_UINT8,       BASE_DEC, VALS(qos_max_ul), 0, "Maximum bit rate for uplink", HFILL }},
5279         { &hf_gtpv1_qos_max_dl,                 { "Maximum bit rate for downlink",      "gtpv1.qos_max_dl",     FT_UINT8,       BASE_DEC, VALS(qos_max_dl), 0, "Maximum bit rate for downlink", HFILL }},
5280         { &hf_gtpv1_qos_res_ber,                { "Residual BER",       "gtpv1.qos_res_ber",            FT_UINT8,       BASE_DEC, VALS(qos_res_ber), GTP_EXT_QOS_RES_BER_MASK, "Residual Bit Error Rate", HFILL }},
5281         { &hf_gtpv1_qos_sdu_err_ratio,  { "SDU Error ratio",    "gtpv1.qos_sdu_err_ratio",      FT_UINT8,       BASE_DEC, VALS(qos_sdu_err_ratio), GTP_EXT_QOS_SDU_ERR_RATIO_MASK, "SDU Error Ratio", HFILL }},
5282         { &hf_gtpv1_qos_trans_delay,    { "Transfer delay",     "gtpv1.qos_trans_delay",        FT_UINT8,       BASE_DEC, VALS(qos_trans_delay), GTP_EXT_QOS_TRANS_DELAY_MASK, "Transfer Delay", HFILL }},
5283         { &hf_gtpv1_qos_traf_handl_prio,        { "Traffic handling priority",  "gtpv1.qos_traf_handl_prio",    FT_UINT8,       BASE_DEC, VALS(qos_traf_handl_prio), GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK, "Traffic Handling Priority", HFILL }},
5284         { &hf_gtpv1_qos_guar_ul,                { "Guaranteed bit rate for uplink",     "gtpv1.qos_guar_ul",    FT_UINT8,       BASE_DEC, VALS(qos_guar_ul), 0, "Guaranteed bit rate for uplink", HFILL }},
5285         { &hf_gtpv1_qos_guar_dl,                { "Guaranteed bit rate for downlink",   "gtpv1.qos_guar_dl",    FT_UINT8,       BASE_DEC, VALS(qos_guar_dl), 0, "Guaranteed bit rate for downlink", HFILL }},
5286
5287         { &hf_gtpv1_tft_code,           { "TFT operation code", "gtpv1.tft_code",               FT_UINT8,       BASE_DEC, VALS (tft_code_type), GTPv1_TFT_CODE_MASK, "TFT operation code", HFILL }},
5288         { &hf_gtpv1_tft_spare,          { "TFT spare bit",      "gtpv1.tft_spare",              FT_UINT8,       BASE_DEC, NULL, GTPv1_TFT_SPARE_MASK, "TFT spare bit", HFILL }},
5289         { &hf_gtpv1_tft_number,         { "Number of packet filters",   "gtpv1.tft_number",     FT_UINT8,       BASE_DEC, NULL, GTPv1_TFT_NUMBER_MASK, "Number of packet filters", HFILL }},
5290         { &hf_gtpv1_tft_eval,           { "Evaluation precedence",      "gtpv1.tft_eval",       FT_UINT8,       BASE_DEC, NULL, 0, "Evaluation precedence", HFILL }},
5291
5292         { &hf_gtpv1_rnc_ipv4,           { "RNC address IPv4",   "gtpv1.rnc_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "Radio Network Controller address IPv4", HFILL }},
5293         { &hf_gtpv1_rnc_ipv6,           { "RNC address IPv6",   "gtpv1.rnc_ipv6",               FT_IPv6,        BASE_HEX, NULL, 0, "Radio Network Controller address IPv6", HFILL }},
5294         { &hf_gtpv1_chrg_ipv4,          { "CG address IPv4",    "gtpv1.chrg_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
5295         { &hf_gtpv1_chrg_ipv6,          { "CG address IPv6",    "gtpv1.chrg_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
5296         { &hf_gtpv1_node_ipv4,          { "Node address IPv4",  "gtpv1.node_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
5297         { &hf_gtpv1_node_ipv6,          { "Node address IPv6",  "gtpv1.node_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
5298         { &hf_gtpv1_ext_id,             { "Extensio Identifier","gtpv1.ext_id",                 FT_UINT16,      BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
5299         { &hf_gtpv1_ext_val,            { "Extension Value",    "gtpv1.ext_val",                FT_STRING,      BASE_DEC, NULL, 0, "Extension Value", HFILL }},
5300         { &hf_gtpv1_unknown,            { "Unknown data (length)",      "gtpv1.unknown",        FT_UINT16,      BASE_DEC, NULL, 0, "Unknown data", HFILL }},
5301
5302         };
5303
5304         static gint *ett_gtp_array[] = {
5305                 &ett_gtp,
5306                 &ett_gtp_flags,
5307                 &ett_gtp_ext,
5308                 &ett_gtp_rai,
5309                 &ett_gtp_qos,
5310                 &ett_gtp_auth_tri,
5311                 &ett_gtp_flow_ii,
5312                 &ett_gtp_rab_cntxt,
5313                 &ett_gtp_rp,
5314                 &ett_gtp_pkt_flow_id,
5315                 &ett_gtp_chrg_char,
5316                 &ett_gtp_user,
5317                 &ett_gtp_mm,
5318                 &ett_gtp_trip,
5319                 &ett_gtp_quint,
5320                 &ett_gtp_pdp,
5321                 &ett_gtp_apn,
5322                 &ett_gtp_proto,
5323                 &ett_gtp_gsn_addr,
5324                 &ett_gtp_tft,
5325                 &ett_gtp_tft_pf,
5326                 &ett_gtp_tft_flags,
5327                 &ett_gtp_rab_setup,
5328                 &ett_gtp_hdr_list,
5329                 &ett_gtp_chrg_addr,
5330                 &ett_gtp_node_addr,
5331                 &ett_gtp_rel_pack,
5332                 &ett_gtp_can_pack,
5333                 &ett_gtp_data_resp,
5334                 &ett_gtp_priv_ext,
5335         };
5336
5337         module_t        *gtp_module;
5338
5339         static enum_val_t gtpv0_cdr_options[] = {
5340                 { "GSM 12.15 (not implemented yet)",    0 },
5341                 { "Nokia CDR",  1 },
5342                 { "None",       2 },
5343                 { NULL,         -1 }
5344         };
5345
5346         /* proto_gtp defined only for preference tab */
5347         proto_gtp = proto_register_protocol ("GPRS Tunneling Protocol", "GTP", "gtp");
5348
5349         proto_gtpv0 = proto_register_protocol ("GPRS Tunnelling Protocol v0", "GTPv0", "gtpv0");
5350         proto_register_field_array(proto_gtpv0, hf_gtpv0, array_length(hf_gtpv0));
5351         proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
5352
5353         proto_gtpv1 = proto_register_protocol("GPRS Tunnelling Protocol v1", "GTPv1", "gtpv1");
5354         proto_register_field_array(proto_gtpv1, hf_gtpv1, array_length(hf_gtpv1));
5355         proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
5356
5357         gtp_module = prefs_register_protocol(proto_gtp, proto_reg_handoff_gtp);
5358
5359         prefs_register_uint_preference(gtp_module, "v0_port", "GTPv0 port", "GTPv0 port (default 3386)", 10, &g_gtpv0_port);
5360         prefs_register_uint_preference(gtp_module, "v1c_port", "GTPv1 control plane (GTP-C) port", "GTPv1 control plane port (default 2123)", 10, &g_gtpv1c_port);
5361         prefs_register_uint_preference(gtp_module, "v1u_port", "GTPv1 user plane (GTP-U) port", "GTPv1 user plane port (default 2152)", 10, &g_gtpv1u_port);
5362         prefs_register_bool_preference(gtp_module, "dissect_tpdu", "Dissect T-PDU", "Dissect T-PDU", &gtp_tpdu);
5363         prefs_register_enum_preference(gtp_module, "v0_dissect_cdr_as", "Dissect GTP'v0 CDRs as", "Dissect GTP'v0 CDRs as", &gtpv0_cdr_as, gtpv0_cdr_options, FALSE);
5364         prefs_register_bool_preference(gtp_module, "v0_check_etsi", "Compare GTPv0 order with ETSI", "GTPv0 ETSI order", &gtpv0_etsi_order);
5365         prefs_register_bool_preference(gtp_module, "v1_check_etsi", "Compare GTPv1 order with ETSI", "GTPv1 ETSI order", &gtpv1_etsi_order);
5366         prefs_register_obsolete_preference(gtp_module, "ppp_reorder");
5367
5368         register_dissector("gtpv0", dissect_gtpv0, proto_gtpv0);
5369         register_dissector("gtpv1", dissect_gtpv1, proto_gtpv1);
5370 }
5371
5372 void
5373 proto_reg_handoff_gtp(void)
5374 {
5375         static int Initialized = FALSE;
5376         static dissector_handle_t gtpv0_handle;
5377         static dissector_handle_t gtpv1_handle;
5378
5379         if (!Initialized) {
5380
5381                 gtpv0_handle = find_dissector("gtpv0");
5382
5383                 gtpv1_handle = find_dissector("gtpv1");
5384
5385                 ppp_subdissector_table = find_dissector_table("ppp.protocol");
5386
5387                 Initialized = TRUE;
5388
5389         } else {
5390
5391                 dissector_delete("udp.port", gtpv0_port, gtpv0_handle);
5392                 dissector_delete("tcp.port", gtpv0_port, gtpv0_handle);
5393
5394                 dissector_delete("udp.port", gtpv1c_port, gtpv1_handle);
5395                 dissector_delete("tcp.port", gtpv1c_port, gtpv1_handle);
5396                 dissector_delete("udp.port", gtpv1u_port, gtpv1_handle);
5397                 dissector_delete("tcp.port", gtpv1u_port, gtpv1_handle);
5398         }
5399
5400         gtpv0_port = g_gtpv0_port;
5401         gtpv1c_port = g_gtpv1c_port;
5402         gtpv1u_port = g_gtpv1u_port;
5403
5404         /* GTP v0 */
5405
5406         dissector_add("udp.port", g_gtpv0_port, gtpv0_handle);
5407         dissector_add("tcp.port", g_gtpv0_port, gtpv0_handle);
5408
5409         /* GTP v1 */
5410
5411         dissector_add("udp.port", g_gtpv1c_port, gtpv1_handle);
5412         dissector_add("tcp.port", g_gtpv1c_port, gtpv1_handle);
5413         dissector_add("udp.port", g_gtpv1u_port, gtpv1_handle);
5414         dissector_add("tcp.port", g_gtpv1u_port, gtpv1_handle);
5415
5416         ip_handle = find_dissector("ip");
5417         ipv6_handle = find_dissector("ipv6");
5418         ppp_handle = find_dissector("ppp");
5419         data_handle = find_dissector("data");
5420 }