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 1.26 2002/04/29 08:20:07 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 #ifdef HAVE_SYS_TYPES_H
  37 # include <sys/types.h>
  38 #endif
  39
  40 #ifdef HAVE_NETINET_IN_H
  41 # include <netinet/in.h>
  42 #endif
  43
  44 #include <glib.h>
  45
  46 #ifdef NEED_SNPRINTF_H
  47 # include "snprintf.h"
  48 #endif
  49
  50 #include <epan/packet.h>
  51 #include "packet-ipv6.h"
  52 #include "prefs.h"
  53
  54 /*
  55  * All data related to GTP v0 (GPRS) uses "gtpv0" or "GTPv0",
  56  * all data related to GTP v1 (UMTS) uses "gtpv1" or "GTPv1",
  57  * if there is any gtp alone statement it means that this data is common
  58  * for both: GPRS and UMTS
  59  */
  60
  61 #define GTPv0_PORT 3386
  62 #define GTPv1C_PORT 2123                        /* 3G Control PDU */
  63 #define GTPv1U_PORT 2152                        /* 3G T-PDU */
  64
  65 #define GTPv0_HDR_LENGTH 20
  66 #define GTPv1_HDR_LENGTH 12
  67
  68 /* for function checking compliance with ETSI  */
  69 #define MANDATORY       1
  70 #define OPTIONAL        2
  71 #define CONDITIONAL     4
  72
  73 static int g_gtpv0_port                 = GTPv0_PORT;
  74 static int g_gtpv1c_port                = GTPv1C_PORT;
  75 static int g_gtpv1u_port                = GTPv1U_PORT;
  76
  77 void proto_reg_handoff_gtp(void);
  78
  79 static int proto_gtpv0                  = -1;
  80 static int proto_gtpv1                  = -1;
  81
  82 static int hf_gtpv0_flags                       = -1;
  83 static int hf_gtpv0_flags_ver           = -1;
  84 static int hf_gtpv0_flags_pt            = -1;
  85 static int hf_gtpv0_flags_spare         = -1;
  86 #ifdef GTP_UNUSED_HANDLES
  87 static int hf_gtpv0_flags_e             = -1;
  88 static int hf_gtpv0_flags_s             = -1;
  89 static int hf_gtpv0_flags_pn            = -1;
  90 #endif
  91 static int hf_gtpv0_flags_snn           = -1;
  92 static int hf_gtpv0_message_type                = -1;
  93 static int hf_gtpv0_length              = -1;
  94 static int hf_gtpv0_seq_number          = -1;
  95 static int hf_gtpv0_flow_label          = -1;
  96 static int hf_gtpv0_sndcp_number                = -1;
  97 #ifdef GTP_UNUSED_HANDLES
  98 static int hf_gtpv0_npdu_number         = -1;
  99 #endif
 100 static int hf_gtpv0_tid                 = -1;
 101 #ifdef GTP_UNUSED_HANDLES
 102 static int hf_gtpv0_teid                        = -1;
 103 static int hf_gtpv0_next                        = -1;
 104 #endif
 105 static int hf_gtpv0_cause                       = -1;
 106 static int hf_gtpv0_imsi                        = -1;
 107 static int hf_gtpv0_rai_mcc             = -1;
 108 static int hf_gtpv0_rai_mnc             = -1;
 109 static int hf_gtpv0_rai_rac             = -1;
 110 static int hf_gtpv0_rai_lac             = -1;
 111 static int hf_gtpv0_tlli                        = -1;
 112 static int hf_gtpv0_ptmsi                       = -1;
 113 static int hf_gtpv0_qos_spare1          = -1;
 114 static int hf_gtpv0_qos_delay           = -1;
 115 static int hf_gtpv0_qos_mean            = -1;
 116 static int hf_gtpv0_qos_peak            = -1;
 117 static int hf_gtpv0_qos_spare2          = -1;
 118 static int hf_gtpv0_qos_precedence      = -1;
 119 static int hf_gtpv0_qos_spare3          = -1;
 120 static int hf_gtpv0_qos_reliability     = -1;
 121 static int hf_gtpv0_reorder             = -1;
 122 static int hf_gtpv0_map_cause           = -1;
 123 static int hf_gtpv0_ptmsi_sig           = -1;
 124 static int hf_gtpv0_ms_valid            = -1;
 125 static int hf_gtpv0_recovery            = -1;
 126 static int hf_gtpv0_sel_mode            = -1;
 127 static int hf_gtpv0_ext_flow_label      = -1;
 128 #ifdef GTP_UNUSED_HANDLES
 129 static int hf_gtpv0_teid_data           = -1;   /* 3G */
 130 #endif
 131 static int hf_gtpv0_flow_sig            = -1;
 132 #ifdef GTP_UNUSED_HANDLES
 133 static int hf_gtpv0_teid_cp             = -1;   /* 3G */
 134 #endif
 135 static int hf_gtpv0_nsapi                       = -1;
 136 static int hf_gtpv0_flow_ii             = -1;
 137 #ifdef GTP_UNUSED_HANDLES
 138 static int hf_gtpv0_teid_ii             = -1;   /* 3G */
 139 #endif
 140 static int hf_gtpv0_ms_reason           = -1;
 141 #ifdef GTP_UNUSED_HANDLES
 142 static int hf_gtpv0_tear_ind            = -1;   /* 3G */
 143 static int hf_gtpv0_ranap_cause         = -1;   /* 3G */
 144 static int hf_gtpv0_rab_gtpu_dn         = -1;   /* 3G */
 145 static int hf_gtpv0_rab_gtpu_up         = -1;   /* 3G */
 146 static int hf_gtpv0_rab_pdu_dn          = -1;   /* 3G */
 147 static int hf_gtpv0_rab_pdu_up          = -1;   /* 3G */
 148 static int hf_gtpv0_rp_sms              = -1;   /* 3G */
 149 static int hf_gtpv0_rp_spare            = -1;   /* 3G */
 150 static int hf_gtpv0_rp_nsapi            = -1;   /* 3G */
 151 static int hf_gtpv0_rp                  = -1;   /* 3G */
 152 static int hf_gtpv0_pkt_flow_id         = -1;   /* 3G */
 153 static int hf_gtpv0_chrg_char_s         = -1;   /* 3G */
 154 static int hf_gtpv0_chrg_char_n         = -1;   /* 3G */
 155 static int hf_gtpv0_chrg_char_p         = -1;   /* 3G */
 156 static int hf_gtpv0_chrg_char_f         = -1;   /* 3G */
 157 static int hf_gtpv0_chrg_char_h         = -1;   /* 3G */
 158 static int hf_gtpv0_chrg_char_r         = -1;   /* 3G */
 159 static int hf_gtpv0_trace_ref           = -1;   /* 3G */
 160 static int hf_gtpv0_trace_type          = -1;   /* 3G */
 161 #endif
 162 static int hf_gtpv0_tr_comm             = -1;   /* charging */
 163 static int hf_gtpv0_chrg_id             = -1;
 164 static int hf_gtpv0_user_ipv4           = -1;
 165 static int hf_gtpv0_user_ipv6           = -1;
 166 static int hf_gtpv0_user_addr_pdp_org   = -1;
 167 static int hf_gtpv0_user_addr_pdp_type  = -1;
 168 static int hf_gtpv0_apn                 = -1;
 169 static int hf_gtpv0_gsn_ipv4            = -1;
 170 static int hf_gtpv0_gsn_ipv6            = -1;
 171 static int hf_gtpv0_gsn_addr_type               = -1;
 172 static int hf_gtpv0_gsn_addr_len                = -1;
 173 static int hf_gtpv0_msisdn              = -1;
 174 #ifdef GTP_UNUSED_HANDLES
 175 static int hf_gtpv0_qos_al_ret_priority = -1;
 176 static int hf_gtpv0_qos_traf_class      = -1;
 177 static int hf_gtpv0_qos_del_order               = -1;
 178 static int hf_gtpv0_qos_del_err_sdu     = -1;
 179 static int hf_gtpv0_qos_max_sdu_size    = -1;
 180 static int hf_gtpv0_qos_max_ul          = -1;
 181 static int hf_gtpv0_qos_max_dl          = -1;
 182 static int hf_gtpv0_qos_res_ber         = -1;
 183 static int hf_gtpv0_qos_sdu_err_ratio   = -1;
 184 static int hf_gtpv0_qos_trans_delay     = -1;
 185 static int hf_gtpv0_qos_traf_handl_prio = -1;
 186 static int hf_gtpv0_qos_guar_ul         = -1;
 187 static int hf_gtpv0_qos_guar_dl         = -1;
 188 static int hf_gtpv0_rnc_ipv4            = -1;
 189 static int hf_gtpv0_rnc_ipv6            = -1;
 190 #endif
 191 static int hf_gtpv0_chrg_ipv4           = -1;
 192 static int hf_gtpv0_chrg_ipv6           = -1;
 193 static int hf_gtpv0_node_ipv4           = -1;
 194 static int hf_gtpv0_node_ipv6           = -1;
 195 static int hf_gtpv0_ext_id              = -1;
 196 static int hf_gtpv0_ext_val             = -1;
 197 static int hf_gtpv0_unknown             = -1;
 198
 199 static int hf_gtpv1_flags                       = -1;
 200 static int hf_gtpv1_flags_ver           = -1;
 201 static int hf_gtpv1_flags_pt            = -1;
 202 static int hf_gtpv1_flags_spare         = -1;
 203 static int hf_gtpv1_flags_e             = -1;
 204 static int hf_gtpv1_flags_s             = -1;
 205 static int hf_gtpv1_flags_pn            = -1;
 206 #ifdef GTP_UNUSED_HANDLES
 207 static int hf_gtpv1_flags_snn           = -1;
 208 #endif
 209 static int hf_gtpv1_message_type                = -1;
 210 static int hf_gtpv1_length              = -1;
 211 static int hf_gtpv1_seq_number          = -1;
 212 #ifdef GTP_UNUSED_HANDLES
 213 static int hf_gtpv1_flow_label          = -1;
 214 static int hf_gtpv1_sndcp_number                = -1;
 215 #endif
 216 static int hf_gtpv1_npdu_number         = -1;
 217 #ifdef GTP_UNUSED_HANDLES
 218 static int hf_gtpv1_tid                 = -1;
 219 #endif
 220 static int hf_gtpv1_teid                        = -1;
 221 static int hf_gtpv1_next                        = -1;
 222 static int hf_gtpv1_cause                       = -1;
 223 static int hf_gtpv1_imsi                        = -1;
 224 static int hf_gtpv1_rai_mcc             = -1;
 225 static int hf_gtpv1_rai_mnc             = -1;
 226 static int hf_gtpv1_rai_rac             = -1;
 227 static int hf_gtpv1_rai_lac             = -1;
 228 static int hf_gtpv1_tlli                        = -1;
 229 static int hf_gtpv1_ptmsi                       = -1;
 230 static int hf_gtpv1_qos_spare1          = -1;
 231 static int hf_gtpv1_qos_delay           = -1;
 232 static int hf_gtpv1_qos_mean            = -1;
 233 static int hf_gtpv1_qos_peak            = -1;
 234 static int hf_gtpv1_qos_spare2          = -1;
 235 static int hf_gtpv1_qos_precedence      = -1;
 236 static int hf_gtpv1_qos_spare3          = -1;
 237 static int hf_gtpv1_qos_reliability     = -1;
 238 static int hf_gtpv1_reorder             = -1;
 239 static int hf_gtpv1_map_cause           = -1;
 240 static int hf_gtpv1_ptmsi_sig           = -1;
 241 static int hf_gtpv1_ms_valid            = -1;
 242 static int hf_gtpv1_recovery            = -1;
 243 static int hf_gtpv1_sel_mode            = -1;
 244 #ifdef GTP_UNUSED_HANDLES
 245 static int hf_gtpv1_ext_flow_label      = -1;
 246 #endif
 247 static int hf_gtpv1_teid_data           = -1;   /* 3G */
 248 #ifdef GTP_UNUSED_HANDLES
 249 static int hf_gtpv1_flow_sig            = -1;
 250 #endif
 251 static int hf_gtpv1_teid_cp             = -1;   /* 3G */
 252 static int hf_gtpv1_nsapi                       = -1;
 253 #ifdef GTP_UNUSED_HANDLES
 254 static int hf_gtpv1_flow_ii             = -1;
 255 #endif
 256 static int hf_gtpv1_teid_ii             = -1;   /* 3G */
 257 static int hf_gtpv1_ms_reason           = -1;
 258 static int hf_gtpv1_tear_ind            = -1;   /* 3G */
 259 static int hf_gtpv1_ranap_cause         = -1;   /* 3G */
 260 static int hf_gtpv1_rab_gtpu_dn         = -1;   /* 3G */
 261 static int hf_gtpv1_rab_gtpu_up         = -1;   /* 3G */
 262 static int hf_gtpv1_rab_pdu_dn          = -1;   /* 3G */
 263 static int hf_gtpv1_rab_pdu_up          = -1;   /* 3G */
 264 static int hf_gtpv1_rp_sms              = -1;   /* 3G */
 265 static int hf_gtpv1_rp_spare            = -1;   /* 3G */
 266 static int hf_gtpv1_rp_nsapi            = -1;   /* 3G */
 267 static int hf_gtpv1_rp                  = -1;   /* 3G */
 268 static int hf_gtpv1_pkt_flow_id         = -1;   /* 3G */
 269 static int hf_gtpv1_chrg_char_s         = -1;   /* 3G */
 270 static int hf_gtpv1_chrg_char_n         = -1;   /* 3G */
 271 static int hf_gtpv1_chrg_char_p         = -1;   /* 3G */
 272 static int hf_gtpv1_chrg_char_f         = -1;   /* 3G */
 273 static int hf_gtpv1_chrg_char_h         = -1;   /* 3G */
 274 static int hf_gtpv1_chrg_char_r         = -1;   /* 3G */
 275 static int hf_gtpv1_trace_ref           = -1;   /* 3G */
 276 static int hf_gtpv1_trace_type          = -1;   /* 3G */
 277 static int hf_gtpv1_tr_comm             = -1;   /* charging */
 278 static int hf_gtpv1_chrg_id             = -1;
 279 static int hf_gtpv1_user_ipv4           = -1;
 280 static int hf_gtpv1_user_ipv6           = -1;
 281 static int hf_gtpv1_user_addr_pdp_org   = -1;
 282 static int hf_gtpv1_user_addr_pdp_type  = -1;
 283 static int hf_gtpv1_apn                 = -1;
 284 static int hf_gtpv1_gsn_ipv4            = -1;
 285 static int hf_gtpv1_gsn_ipv6            = -1;
 286 static int hf_gtpv1_gsn_addr_type               = -1;
 287 static int hf_gtpv1_gsn_addr_len                = -1;
 288 static int hf_gtpv1_msisdn              = -1;
 289 static int hf_gtpv1_qos_al_ret_priority = -1;
 290 static int hf_gtpv1_qos_traf_class      = -1;
 291 static int hf_gtpv1_qos_del_order               = -1;
 292 static int hf_gtpv1_qos_del_err_sdu     = -1;
 293 static int hf_gtpv1_qos_max_sdu_size    = -1;
 294 static int hf_gtpv1_qos_max_ul          = -1;
 295 static int hf_gtpv1_qos_max_dl          = -1;
 296 static int hf_gtpv1_qos_res_ber         = -1;
 297 static int hf_gtpv1_qos_sdu_err_ratio   = -1;
 298 static int hf_gtpv1_qos_trans_delay     = -1;
 299 static int hf_gtpv1_qos_traf_handl_prio = -1;
 300 static int hf_gtpv1_qos_guar_ul         = -1;
 301 static int hf_gtpv1_qos_guar_dl         = -1;
 302 static int hf_gtpv1_rnc_ipv4            = -1;
 303 static int hf_gtpv1_rnc_ipv6            = -1;
 304 static int hf_gtpv1_chrg_ipv4           = -1;
 305 static int hf_gtpv1_chrg_ipv6           = -1;
 306 static int hf_gtpv1_node_ipv4           = -1;
 307 static int hf_gtpv1_node_ipv6           = -1;
 308 static int hf_gtpv1_ext_id              = -1;
 309 static int hf_gtpv1_ext_val             = -1;
 310 static int hf_gtpv1_unknown             = -1;
 311
 312 /* Initialize the subtree pointers */
 313 static gint ett_gtp                     = -1;
 314 static gint ett_gtp_flags               = -1;
 315 static gint ett_gtp_ext                 = -1;
 316 static gint ett_gtp_rai                 = -1;
 317 static gint ett_gtp_qos                 = -1;
 318 static gint ett_gtp_auth_tri            = -1;
 319 static gint ett_gtp_flow_ii             = -1;
 320 static gint ett_gtp_rab_cntxt           = -1;
 321 static gint ett_gtp_rp                  = -1;
 322 static gint ett_gtp_pkt_flow_id         = -1;
 323 static gint ett_gtp_chrg_char           = -1;
 324 static gint ett_gtp_user                = -1;
 325 static gint ett_gtp_mm                  = -1;
 326 static gint ett_gtp_trip                = -1;
 327 static gint ett_gtp_quint               = -1;
 328 static gint ett_gtp_pdp                 = -1;
 329 static gint ett_gtp_apn                 = -1;
 330 static gint ett_gtp_proto               = -1;
 331 static gint ett_gtp_gsn_addr            = -1;
 332 static gint ett_gtp_tft                 = -1;
 333 static gint ett_gtp_tft_pf              = -1;
 334 static gint ett_gtp_rab_setup           = -1;
 335 static gint ett_gtp_hdr_list            = -1;
 336 static gint ett_gtp_chrg_addr           = -1;
 337 static gint ett_gtp_node_addr           = -1;
 338 static gint ett_gtp_rel_pack            = -1;
 339 static gint ett_gtp_can_pack            = -1;
 340 static gint ett_gtp_data_resp           = -1;
 341 static gint ett_gtp_priv_ext            = -1;
 342
 343 /* Definition of user preferences panel fields */
 344 #define DONT_DISSECT_CDRS       2
 345
 346 static gboolean gtp_tpdu                = TRUE;
 347 static gint     gtpv0_cdr_as            = DONT_DISSECT_CDRS;                    /* 2 = do not dissect */
 348 static gboolean gtpv0_etsi_order        = FALSE;
 349 static gboolean gtpv1_etsi_order        = FALSE;
 350 static int      gtpv0_port              = 0;
 351 static int      gtpv1c_port             = 0;
 352 static int      gtpv1u_port             = 0;
 353 static gboolean ppp_reorder             = TRUE;
 354
 355 /* Definition of flags masks */
 356 #define GTP_VER_MASK 0xE0
 357
 358 static const value_string ver_types[] = {
 359         { 0, "GTP release 97/98 version" },
 360         { 1, "GTP release 99 version" },
 361         { 2, "None" },
 362         { 3, "None" },
 363         { 4, "None" },
 364         { 5, "None" },
 365         { 6, "None" },
 366         { 7, "None" },
 367         { 0, NULL }
 368 };
 369
 370 #define GTP_PT_MASK             0x10
 371 #define GTP_SPARE_MASK          0x0E
 372 #define GTPv1_SPARE_MASK                0x08
 373 #define GTPv1_E_MASK            0x04
 374 #define GTPv1_S_MASK            0x02
 375 #define GTP_SNN_MASK            0x01
 376 #define GTPv1_PN_MASK           0x01
 377
 378 /* Definition of 3G charging characteristics masks */
 379 #define GTP_MASK_CHRG_CHAR_S    0xF000
 380 #define GTP_MASK_CHRG_CHAR_N    0x0800
 381 #define GTP_MASK_CHRG_CHAR_P    0x0400
 382 #define GTP_MASK_CHRG_CHAR_F    0x0200
 383 #define GTP_MASK_CHRG_CHAR_H    0x0100
 384 #define GTP_MASK_CHRG_CHAR_R    0x00FF
 385
 386
 387 /* Definition of GSN Address masks */
 388 #define GTP_EXT_GSN_ADDR_TYPE_MASK              0xC0
 389 #define GTP_EXT_GSN_ADDR_LEN_MASK               0x3F
 390
 391 /* Definition of QoS masks */
 392 #define GTP_EXT_QOS_SPARE1_MASK                 0xC0
 393 #define GTP_EXT_QOS_DELAY_MASK                  0x38
 394 #define GTP_EXT_QOS_RELIABILITY_MASK            0x07
 395 #define GTP_EXT_QOS_PEAK_MASK                   0xF0
 396 #define GTP_EXT_QOS_SPARE2_MASK                 0x08
 397 #define GTP_EXT_QOS_PRECEDENCE_MASK             0x07
 398 #define GTP_EXT_QOS_SPARE3_MASK                 0xE0
 399 #define GTP_EXT_QOS_MEAN_MASK                   0x1F
 400 #define GTP_EXT_QOS_TRAF_CLASS_MASK             0xE0
 401 #define GTP_EXT_QOS_DEL_ORDER_MASK              0x18
 402 #define GTP_EXT_QOS_DEL_ERR_SDU_MASK            0x07
 403 #define GTP_EXT_QOS_RES_BER_MASK                0xF0
 404 #define GTP_EXT_QOS_SDU_ERR_RATIO_MASK          0x0F
 405 #define GTP_EXT_QOS_TRANS_DELAY_MASK            0xFC
 406 #define GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK    0x03
 407
 408 /* Definition of Radio Priority's masks */
 409 #define GTPv1_EXT_RP_NSAPI_MASK                 0xF0
 410 #define GTPv1_EXT_RP_SPARE_MASK                 0x08
 411 #define GTPv1_EXT_RP_MASK                       0x07
 412
 413 /* definitions of GTP messages */
 414 #define GTP_MSG_UNKNOWN                 0x00
 415 #define GTP_MSG_ECHO_REQ                0x01
 416 #define GTP_MSG_ECHO_RESP               0x02
 417 #define GTP_MSG_VER_NOT_SUPP            0x03
 418 #define GTP_MSG_NODE_ALIVE_REQ          0x04
 419 #define GTP_MSG_NODE_ALIVE_RESP         0x05
 420 #define GTP_MSG_REDIR_REQ               0x06
 421 #define GTP_MSG_REDIR_RESP              0x07
 422 #define GTP_MSG_CREATE_PDP_REQ          0x10
 423 #define GTP_MSG_CREATE_PDP_RESP         0x11
 424 #define GTP_MSG_UPDATE_PDP_REQ          0x12
 425 #define GTP_MSG_UPDATE_PDP_RESP         0x13
 426 #define GTP_MSG_DELETE_PDP_REQ          0x14
 427 #define GTP_MSG_DELETE_PDP_RESP         0x15
 428 #define GTP_MSG_CREATE_AA_PDP_REQ       0x16    /* 2G */
 429 #define GTP_MSG_CREATE_AA_PDP_RESP      0x17    /* 2G */
 430 #define GTP_MSG_DELETE_AA_PDP_REQ       0x18    /* 2G */
 431 #define GTP_MSG_DELETE_AA_PDP_RESP      0x19    /* 2G */
 432 #define GTP_MSG_ERR_IND                 0x1A
 433 #define GTP_MSG_PDU_NOTIFY_REQ          0x1B
 434 #define GTP_MSG_PDU_NOTIFY_RESP         0x1C
 435 #define GTP_MSG_PDU_NOTIFY_REJ_REQ      0x1D
 436 #define GTP_MSG_PDU_NOTIFY_REJ_RESP     0x1E
 437 #define GTP_MSG_SUPP_EXT_HDR            0x1F
 438 #define GTP_MSG_SEND_ROUT_INFO_REQ      0x20
 439 #define GTP_MSG_SEND_ROUT_INFO_RESP     0x21
 440 #define GTP_MSG_FAIL_REP_REQ            0x22
 441 #define GTP_MSG_FAIL_REP_RESP           0x23
 442 #define GTP_MSG_MS_PRESENT_REQ          0x24
 443 #define GTP_MSG_MS_PRESENT_RESP         0x25
 444 #define GTP_MSG_IDENT_REQ               0x30
 445 #define GTP_MSG_IDENT_RESP              0x31
 446 #define GTP_MSG_SGSN_CNTXT_REQ          0x32
 447 #define GTP_MSG_SGSN_CNTXT_RESP         0x33
 448 #define GTP_MSG_SGSN_CNTXT_ACK          0x34
 449 #define GTP_MSG_FORW_RELOC_REQ          0x35
 450 #define GTP_MSG_FORW_RELOC_RESP         0x36
 451 #define GTP_MSG_FORW_RELOC_COMP         0x37
 452 #define GTP_MSG_RELOC_CANCEL_REQ        0x38
 453 #define GTP_MSG_RELOC_CANCEL_RESP       0x39
 454 #define GTP_MSG_FORW_SRNS_CNTXT         0x3A
 455 #define GTP_MSG_FORW_RELOC_ACK          0x3B
 456 #define GTP_MSG_FORW_SRNS_CNTXT_ACK     0x3C
 457 #define GTP_MSG_DATA_TRANSF_REQ         0xF0
 458 #define GTP_MSG_DATA_TRANSF_RESP        0xF1
 459 #define GTP_MSG_TPDU                    0xFF
 460
 461 static const value_string message_type[] = {
 462         { GTP_MSG_UNKNOWN,              "For future use" },
 463         { GTP_MSG_ECHO_REQ,             "Echo request" },
 464         { GTP_MSG_ECHO_RESP,            "Echo response" },
 465         { GTP_MSG_VER_NOT_SUPP,         "Version not supported" },
 466         { GTP_MSG_NODE_ALIVE_REQ,       "Node alive request" },
 467         { GTP_MSG_NODE_ALIVE_RESP,      "Node alive response" },
 468         { GTP_MSG_REDIR_REQ,            "Redirection request" },
 469         { GTP_MSG_REDIR_RESP,           "Redirection response" },
 470         { GTP_MSG_CREATE_PDP_REQ,       "Create PDP context request" },
 471         { GTP_MSG_CREATE_PDP_RESP,      "Create PDP context response" },
 472         { GTP_MSG_UPDATE_PDP_REQ,       "Update PDP context request" },
 473         { GTP_MSG_UPDATE_PDP_RESP,      "Update PDP context response" },
 474         { GTP_MSG_DELETE_PDP_REQ,       "Delete PDP context request" },
 475         { GTP_MSG_DELETE_PDP_RESP,      "Delete PDP context response" },
 476         { GTP_MSG_CREATE_AA_PDP_REQ,    "Create AA PDP Context Request" },
 477         { GTP_MSG_CREATE_AA_PDP_RESP,   "Create AA PDP Context Response" },
 478         { GTP_MSG_DELETE_AA_PDP_REQ,    "Delete AA PDP Context Request" },
 479         { GTP_MSG_DELETE_AA_PDP_RESP,   "Delete AA PDP Context Response" },
 480         { GTP_MSG_ERR_IND,              "Error indication" },
 481         { GTP_MSG_PDU_NOTIFY_REQ,       "PDU notification request" },
 482         { GTP_MSG_PDU_NOTIFY_RESP,      "PDU notification response" },
 483         { GTP_MSG_PDU_NOTIFY_REJ_REQ,   "PDU notification reject request" },
 484         { GTP_MSG_PDU_NOTIFY_REJ_RESP,  "PDU notification reject response" },
 485         { GTP_MSG_SUPP_EXT_HDR,         "Supported extension header notification" },
 486         { GTP_MSG_SEND_ROUT_INFO_REQ,   "Send routing information for GPRS request" },
 487         { GTP_MSG_SEND_ROUT_INFO_RESP,  "Send routing information for GPRS response" },
 488         { GTP_MSG_FAIL_REP_REQ,         "Failure report request" },
 489         { GTP_MSG_FAIL_REP_RESP,        "Failure report response" },
 490         { GTP_MSG_MS_PRESENT_REQ,       "Note MS GPRS present request" },
 491         { GTP_MSG_MS_PRESENT_RESP,      "Note MS GPRS present response" },
 492         { GTP_MSG_IDENT_REQ,            "Identification request" },
 493         { GTP_MSG_IDENT_RESP,           "Identification response" },
 494         { GTP_MSG_SGSN_CNTXT_REQ,       "SGSN context request" },
 495         { GTP_MSG_SGSN_CNTXT_RESP,      "SGSN context response" },
 496         { GTP_MSG_SGSN_CNTXT_ACK,       "SGSN context acknowledgement" },
 497         { GTP_MSG_FORW_RELOC_REQ,       "Forward relocation request" },
 498         { GTP_MSG_FORW_RELOC_RESP,      "Forward relocation response" },
 499         { GTP_MSG_FORW_RELOC_COMP,      "Forward relocation complete" },
 500         { GTP_MSG_RELOC_CANCEL_REQ,     "Relocation cancel request" },
 501         { GTP_MSG_RELOC_CANCEL_RESP,    "Relocation cancel response" },
 502         { GTP_MSG_FORW_SRNS_CNTXT,      "Forward SRNS context" },
 503         { GTP_MSG_FORW_RELOC_ACK,       "Forward relocation complete acknowledge" },
 504         { GTP_MSG_FORW_SRNS_CNTXT_ACK,  "Forward SRNS context acknowledge" },
 505         { GTP_MSG_DATA_TRANSF_REQ,      "Data record transfer request" },
 506         { GTP_MSG_DATA_TRANSF_RESP,     "Data record transfer response" },
 507         { GTP_MSG_TPDU,                 "T-PDU" },
 508         { 0, NULL }
 509 };
 510
 511 /* definitions of fields in extension header */
 512 #define GTP_EXT_CAUSE           0x01
 513 #define GTP_EXT_IMSI            0x02
 514 #define GTP_EXT_RAI             0x03
 515 #define GTP_EXT_TLLI            0x04
 516 #define GTP_EXT_PTMSI           0x05
 517 #define GTP_EXT_QOS_GPRS        0x06
 518 #define GTP_EXT_REORDER         0x08
 519 #define GTP_EXT_AUTH_TRI        0x09
 520 #define GTP_EXT_MAP_CAUSE       0x0B
 521 #define GTP_EXT_PTMSI_SIG       0x0C
 522 #define GTP_EXT_MS_VALID        0x0D
 523 #define GTP_EXT_RECOVER         0x0E
 524 #define GTP_EXT_SEL_MODE        0x0F
 525
 526 #define GTP_EXT_16              0x10
 527 #define GTP_EXT_FLOW_LABEL      0x10
 528 #define GTP_EXT_TEID            0x10    /* 0xFF10 3G */
 529
 530 #define GTP_EXT_17              0x11
 531 #define GTP_EXT_FLOW_SIG        0x11
 532 #define GTP_EXT_TEID_CP         0x11    /* 0xFF11 3G */
 533
 534 #define GTP_EXT_18              0x12
 535 #define GTP_EXT_FLOW_II         0x12
 536 #define GTP_EXT_TEID_II         0x12    /* 0xFF12 3G*/
 537
 538 #define GTP_EXT_19              0x13
 539 #define GTP_EXT_MS_REASON       0x13    /* same as 0x1D GTPv1_EXT_MS_REASON */
 540 #define GTP_EXT_TEAR_IND        0x13    /* 0xFF13 3G*/
 541
 542 #define GTP_EXT_NSAPI           0x14    /* 3G */
 543 #define GTP_EXT_RANAP_CAUSE     0x15    /* 3G */
 544 #define GTP_EXT_RAB_CNTXT       0x16    /* 3G */
 545 #define GTP_EXT_RP_SMS          0x17    /* 3G */
 546 #define GTP_EXT_RP              0x18    /* 3G */
 547 #define GTP_EXT_PKT_FLOW_ID     0x19    /* 3G */
 548 #define GTP_EXT_CHRG_CHAR       0x1A    /* 3G */
 549 #define GTP_EXT_TRACE_REF       0x1B    /* 3G */
 550 #define GTP_EXT_TRACE_TYPE      0x1C    /* 3G */
 551 #define GTPv1_EXT_MS_REASON     0x1D    /* 3G */
 552 #define GTP_EXT_TR_COMM         0x7E    /* charging */
 553 #define GTP_EXT_CHRG_ID         0x7F
 554 #define GTP_EXT_USER_ADDR       0x80
 555 #define GTP_EXT_MM_CNTXT        0x81
 556 #define GTP_EXT_PDP_CNTXT       0x82
 557 #define GTP_EXT_APN             0x83
 558 #define GTP_EXT_PROTO_CONF      0x84
 559 #define GTP_EXT_GSN_ADDR        0x85
 560 #define GTP_EXT_MSISDN          0x86
 561 #define GTP_EXT_QOS_UMTS        0x87    /* 3G */
 562 #define GTP_EXT_AUTH_QUI        0x88    /* 3G */
 563 #define GTP_EXT_TFT             0x89    /* 3G */
 564 #define GTP_EXT_TARGET_ID       0x8A    /* 3G */
 565 #define GTP_EXT_UTRAN_CONT      0x8B    /* 3G */
 566 #define GTP_EXT_RAB_SETUP       0x8C    /* 3G */
 567 #define GTP_EXT_HDR_LIST        0x8D    /* 3G */
 568 #define GTP_EXT_TRIGGER_ID      0x8E    /* 3G */
 569 #define GTP_EXT_OMC_ID          0x8F    /* 3G */
 570 #define GTP_EXT_REL_PACK        0xF9    /* charging */
 571 #define GTP_EXT_CAN_PACK        0xFA    /* charging */
 572 #define GTP_EXT_CHRG_ADDR       0xFB
 573 #define GTP_EXT_DATA_REQ        0xFC    /* charging */
 574 #define GTP_EXT_DATA_RESP       0xFD    /* charging */
 575 #define GTP_EXT_NODE_ADDR       0xFE    /* charging */
 576 #define GTP_EXT_PRIV_EXT        0xFF
 577
 578 static const value_string gtp_val[] = {
 579         { GTP_EXT_CAUSE,        "Cause of operation" },
 580         { GTP_EXT_IMSI,         "IMSI " },
 581         { GTP_EXT_RAI,          "Routing Area Identity" },
 582         { GTP_EXT_TLLI,         "Temporary Logical Link Identity" },
 583         { GTP_EXT_PTMSI,        "Packet TMSI" },
 584         { GTP_EXT_QOS_GPRS,     "Quality of Service" },
 585         { GTP_EXT_REORDER,      "Reorder required" },
 586         { GTP_EXT_AUTH_TRI,     "Authentication triplets" },
 587         { GTP_EXT_MAP_CAUSE,    "MAP cause" },
 588         { GTP_EXT_PTMSI_SIG,    "P-TMSI signature" },
 589         { GTP_EXT_MS_VALID,     "MS validated" },
 590         { GTP_EXT_RECOVER,      "Recovery" },
 591         { GTP_EXT_SEL_MODE,     "Selection mode" },
 592
 593         { GTP_EXT_16,           "Flow label data I" },
 594         { GTP_EXT_FLOW_LABEL,   "Flow label data I" },
 595         { GTP_EXT_TEID,         "Tunnel Endpoint Identifier Data I" },          /* 3G */
 596
 597         { GTP_EXT_17,           "Flow label signalling" },
 598         { GTP_EXT_FLOW_SIG,     "Flow label signalling" },
 599         { GTP_EXT_TEID_CP,      "Tunnel Endpoint Identifier Data Control Plane" },      /* 3G */
 600
 601         { GTP_EXT_18,           "Flow label data II" },
 602         { GTP_EXT_FLOW_II,      "Flow label data II" },
 603         { GTP_EXT_TEID_II,      "Tunnel Endpoint Identifier Data II" },         /* 3G */
 604
 605         { GTP_EXT_19,           "MS not reachable reason" },
 606         { GTP_EXT_MS_REASON,    "MS not reachable reason" },
 607         { GTP_EXT_TEAR_IND,     "Teardown ID" },                                        /* 3G */
 608
 609         { GTP_EXT_NSAPI,        "NSAPI" },                                              /* 3G */
 610         { GTP_EXT_RANAP_CAUSE,  "RANAP cause" },                                        /* 3G */
 611         { GTP_EXT_RAB_CNTXT,    "RAB context" },                                        /* 3G */
 612         { GTP_EXT_RP_SMS,       "Radio Priority for MO SMS" },                  /* 3G */
 613         { GTP_EXT_RP,           "Radio Priority" },                                     /* 3G */
 614         { GTP_EXT_PKT_FLOW_ID,  "Packet Flow ID " },                                    /* 3G */
 615         { GTP_EXT_CHRG_CHAR,    "Charging characteristics" },                           /* 3G */
 616         { GTP_EXT_TRACE_REF,    "Trace references" },                                   /* 3G */
 617         { GTP_EXT_TRACE_TYPE,   "Trace type" },                                 /* 3G */
 618         { GTPv1_EXT_MS_REASON,  "MS not reachable reason" },                            /* 3G */
 619         { GTP_EXT_TR_COMM,      "Packet transfer command" },                            /* charging */
 620         { GTP_EXT_CHRG_ID,      "Charging ID" },
 621         { GTP_EXT_USER_ADDR,    "End user address " },
 622         { GTP_EXT_MM_CNTXT,     "MM context" },
 623         { GTP_EXT_PDP_CNTXT,    "PDP context" },
 624         { GTP_EXT_APN,          "Access Point Name" },
 625         { GTP_EXT_PROTO_CONF,   "Protocol configuration options" },
 626         { GTP_EXT_GSN_ADDR,     "GSN address" },
 627         { GTP_EXT_MSISDN,       "MS international PSTN/ISDN number" },
 628         { GTP_EXT_QOS_UMTS,     "Quality of service (UMTS)" },                  /* 3G */
 629         { GTP_EXT_AUTH_QUI,     "Authentication quintuplets" },                 /* 3G */
 630         { GTP_EXT_TFT,          "Traffic Flow Template (TFT)" },                        /* 3G */
 631         { GTP_EXT_TARGET_ID,    "Target (RNC) identification" },                        /* 3G */
 632         { GTP_EXT_UTRAN_CONT,   "UTRAN transparent field" },                            /* 3G */
 633         { GTP_EXT_RAB_SETUP,    "RAB setup information" },                              /* 3G */
 634         { GTP_EXT_HDR_LIST,     "Extension Header Types List " },                       /* 3G */
 635         { GTP_EXT_TRIGGER_ID,   "Trigger Id " },                                        /* 3G */
 636         { GTP_EXT_OMC_ID,       "OMC Identity " },                                      /* 3G */
 637         { GTP_EXT_REL_PACK,     "Sequence numbers of released packets IE" },            /* charging */
 638         { GTP_EXT_CAN_PACK,     "Sequence numbers of canceled packets IE" },            /* charging */
 639         { GTP_EXT_CHRG_ADDR,    "Charging Gateway address" },
 640         { GTP_EXT_DATA_REQ,     "Data record packet" },                         /* charging */
 641         { GTP_EXT_DATA_RESP,    "Requests responded" },                         /* charging */
 642         { GTP_EXT_NODE_ADDR,    "Address of recommended node" },                        /* charging */
 643         { GTP_EXT_PRIV_EXT,     "Private Extension " },
 644         { 0, NULL }
 645 };
 646
 647 /* GPRS:        9.60 v7.6.0, page 37
 648  * UMTS:        29.060 v4.0, page 45
 649  */
 650 static const value_string cause_type[] = {
 651         { 0,    "Request IMSI" },
 652         { 1,    "Request IMEI" },
 653         { 2,    "Request IMSI and IMEI" },
 654         { 3,    "No identity needed" },
 655         { 4,    "MS refuses" },
 656         { 5,    "MS is not GPRS responding" },
 657         { 59,   "System failure" },     /* charging */
 658         { 60,   "The transmit buffers are becoming full" },     /* charging */
 659         { 61,   "The receive buffers are becoming full" },      /* charging */
 660         { 62,   "Another node is about to go down" },   /* charging */
 661         { 63,   "This node is about to go down" },      /* charging */
 662         { 128,  "Request accepted" },
 663         { 192,  "Non-existent" },
 664         { 193,  "Invalid message format" },
 665         { 194,  "IMSI not known" },
 666         { 195,  "MS is GPRS detached" },
 667         { 196,  "MS is not GPRS responding" },
 668         { 197,  "MS refuses" },
 669         { 198,  "Version not supported" },
 670         { 199,  "No resource available" },
 671         { 200,  "Service not supported" },
 672         { 201,  "Mandatory IE incorrect" },
 673         { 202,  "Mandatory IE missing" },
 674         { 203,  "Optional IE incorrect" },
 675         { 204,  "System failure" },
 676         { 205,  "Roaming restriction" },
 677         { 206,  "P-TMSI signature mismatch" },
 678         { 207,  "GPRS connection suspended" },
 679         { 208,  "Authentication failure" },
 680         { 209,  "User authentication failed" },
 681         { 210,  "Context not found" },
 682         { 211,  "All PDP dynamic addresses are occupied" },
 683         { 212,  "No memory is available" },
 684         { 213,  "Relocation failure" },
 685         { 214,  "Unknown mandatory extension header" },
 686         { 215,  "Semantic error in the TFT operation" },
 687         { 216,  "Syntactic error in the TFT operation" },
 688         { 217,  "Semantic errors in packet filter(s)" },
 689         { 218,  "Syntactic errors in packet filter(s)" },
 690         { 219,  "Missing or unknown APN" },
 691         { 220,  "Unknown PDP address or PDP type" },
 692         { 252,  "Request related to possibly duplicated packets already fulfilled" },   /* charging */
 693         { 253,  "Request already fulfilled" },  /* charging */
 694         { 254,  "Sequence numbers of released/cancelled packets IE incorrect" },        /* charging */
 695         { 255,  "Request not fulfilled" },      /* charging */
 696         { 0, NULL }
 697 };
 698
 699 /* GPRS:        9.02 v7.7.0
 700  * UMTS:        29.002 v4.2.1, chapter 17.5, page 268
 701  * TODO: Check if all map_cause values are included
 702  */
 703 static const value_string map_cause_type[] = {
 704         { 1, "Unknown subscriber" },
 705         { 8, "Roaming not allowed" },
 706         { 10, "Bearer service not provisioned" },
 707         { 11, "Teleservice not provisioned" },
 708         { 13, "Call barred" },
 709         { 21, "Facility not supported" },
 710         { 23, "Update GPRS location" },
 711         { 24, "Send routing info for GPRS" },
 712         { 26, "Note MS present for GPRS" },
 713         { 27, "Absent subscriber" },
 714         { 34, "System failure" },
 715         { 35, "Data missing" },
 716         { 36, "Unexpected data value" },
 717         { 44, "Number chenged" },
 718         { 45, "Busy subscriber" },
 719         { 46, "No subscriber reply" },
 720         { 48, "Facility not allowed" },
 721         { 0, NULL }
 722 };
 723
 724 static const value_string gsn_addr_type[] = {
 725         { 0x00, "IPv4" },
 726         { 0x01, "IPv6" },
 727         { 0,    NULL },
 728 };
 729
 730 static const value_string pdp_type[] = {
 731         { 0x00, "X.25" },
 732         { 0x01, "PPP" },
 733         { 0x02, "OSP:IHOSS" },
 734         { 0x21, "IPv4" },
 735         { 0x57, "IPv6" },
 736         { 0, NULL }
 737 };
 738
 739 static const value_string pdp_org_type[] = {
 740         { 0, "ETSI" },
 741         { 1, "IETF" },
 742         { 0, NULL }
 743 };
 744
 745 static const value_string qos_delay_type[] = {
 746         { 0x00, "Subsribed delay class (in MS to network direction)" },
 747         { 0x01, "Delay class 1" },
 748         { 0x02, "Delay class 2" },
 749         { 0x03, "Delay class 3" },
 750         { 0x04, "Delay class 4 (best effort)" },
 751         { 0x07, "Reserved" },
 752         { 0, NULL }
 753 };
 754
 755 static const value_string qos_reliability_type[] = {
 756         { 0x00, "Subscribed reliability class (in MS to network direction)" },
 757         { 0x01, "Ack GTP/LLC/RLC, Protected data" },
 758         { 0x02, "Unack GTP, Ack LLC/RLC, Protected data" },
 759         { 0x03, "Unack GTP/LLC, Ack RLC, Protected data" },
 760         { 0x04, "Unack GTP/LLC/RLC, Protected data" },
 761         { 0x05, "Unack GTP/LLC/RLC, Unprotected data" },
 762         { 0x07, "Reserved" },
 763         { 0, NULL }
 764 };
 765
 766 static const value_string qos_peak_type[] = {
 767         { 0x00, "Subscribed peak throughput (in MS to network direction)" },
 768         { 0x01, "Up to 1 000 oct/s" },
 769         { 0x02, "Up to 2 000 oct/s" },
 770         { 0x03, "Up to 4 000 oct/s" },
 771         { 0x04, "Up to 8 000 oct/s" },
 772         { 0x05, "Up to 16 000 oct/s" },
 773         { 0x06, "Up to 32 000 oct/s" },
 774         { 0x07, "Up to 64 000 oct/s" },
 775         { 0x08, "Up to 128 000 oct/s" },
 776         { 0x09, "Up to 256 000 oct/s" },
 777 /* QoS Peak throughput classes from 0x0A to 0x0F (from 10 to 15) are subscribed */
 778         { 0x0A, "Reserved" },
 779         { 0x0B, "Reserved" },
 780         { 0x0C, "Reserved" },
 781         { 0x0D, "Reserved" },
 782         { 0x0E, "Reserved" },
 783         { 0x0F, "Reserved" },
 784         { 0, NULL }
 785 };
 786
 787 static const value_string qos_precedence_type[] = {
 788         { 0x00, "Subscribed precedence (in MS to network direction)" },
 789         { 0x01, "High priority" },
 790         { 0x02, "Normal priority" },
 791         { 0x03, "Low priority" },
 792         { 0x07, "Reserved" },
 793         { 0, NULL }
 794 };
 795
 796 static const value_string qos_mean_type[] = {
 797         { 0x00, "Subscribed mean throughput (in MS to network direction)" },
 798         { 0x01, "100 oct/h" },          /* Class 2 */
 799         { 0x02, "200 oct/h" },          /* Class 3 */
 800         { 0x03, "500 oct/h" },          /* Class 4 */
 801         { 0x04, "1 000 oct/h" },        /* Class 5 */
 802         { 0x05, "2 000 oct/h" },        /* Class 6 */
 803         { 0x06, "5 000 oct/h" },        /* Class 7 */
 804         { 0x07, "10 000 oct/h" },       /* Class 8 */
 805         { 0x08, "20 000 oct/h" },       /* Class 9 */
 806         { 0x09, "50 000 oct/h" },       /* Class 10 */
 807         { 0x0A, "100 000 oct/h" },      /* Class 11 */
 808         { 0x0B, "200 000 oct/h" },      /* Class 12 */
 809         { 0x0C, "500 000 oct/h" },      /* Class 13 */
 810         { 0x0D, "1 000 000 oct/h" },    /* Class 14 */
 811         { 0x0E, "2 000 000 oct/h" },    /* Class 15 */
 812         { 0x0F, "5 000 000 oct/h" },    /* Class 16 */
 813         { 0x10, "10 000 000 oct/h" },   /* Class 17 */
 814         { 0x11, "20 000 000 oct/h" },   /* Class 18 */
 815         { 0x12, "50 000 000 oct/h" },   /* Class 19 */
 816 /* QoS Mean throughput classes from 0x13 to 0x1E (from 19 to 30) are subscribed */
 817         { 0x13, "Reserved" },
 818         { 0x14, "Reserved" },
 819         { 0x15, "Reserved" },
 820         { 0x16, "Reserved" },
 821         { 0x17, "Reserved" },
 822         { 0x18, "Reserved" },
 823         { 0x19, "Reserved" },
 824         { 0x1A, "Reserved" },
 825         { 0x1B, "Reserved" },
 826         { 0x1C, "Reserved" },
 827         { 0x1D, "Reserved" },
 828         { 0x1E, "Reserved" },
 829         { 0x1F, "Best effort" },        /* Class 1 */
 830         { 0, NULL }
 831 };
 832
 833 static const value_string qos_del_err_sdu[] = {
 834         { 0x00, "Subscribed delivery of erroneous SDUs (in MS to network direction)" },
 835         { 0x01, "No detect ('-')" },
 836         { 0x02, "Erroneous SDUs are delivered ('yes')" },
 837         { 0x03, "Erroneous SDUs are not delivered ('no')" },
 838         { 0x07, "Reserved" },           /* All other values are reserved */
 839         { 0, NULL }
 840 };
 841
 842 static const value_string qos_del_order[] = {
 843         { 0x00, "Subscribed delivery order (in MS to network direction)" },
 844         { 0x01, "With delivery order ('yes')" },
 845         { 0x02, "Without delivery order ('no')" },
 846         { 0x03, "Reserved" },           /* All other values are reserved */
 847         { 0, NULL }
 848 };
 849
 850 static const value_string qos_traf_class[] = {
 851         { 0x00, "Subscribed traffic class (in MS to network direction)" },
 852         { 0x01, "Conversational class" },
 853         { 0x02, "Streaming class" },
 854         { 0x03, "Interactive class" },
 855         { 0x04, "Background class" },
 856         { 0x07, "Reserved" },           /* All other values are reserved */
 857         { 0, NULL }
 858 };
 859
 860 static const value_string qos_max_sdu_size[] = {
 861         { 0x00, "Subscribed maximum SDU size (in MS to network direction" },
 862         /* For values from 0x01 to 0x96 (from 1 to 150), use a granularity of 10 octets */
 863         { 0x97, "1502 octets" },
 864         { 0x98, "1510 octets" },
 865         { 0x99, "1520 octets" },
 866         { 0, NULL }                                     /* All other values are reserved */
 867 };
 868
 869 static const value_string qos_max_ul[] = {
 870         { 0x00, "Subscribed maximum bit rate for uplink (in MS to network direction)" },
 871         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 872         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 873         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 874         { 0xFF, "0 kbps" },
 875         { 0, NULL }
 876 };
 877
 878 static const value_string qos_max_dl[] = {
 879         { 0x00, "Subscribed maximum bit rate for downlink (in MS to network direction)" },
 880         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 881         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 882         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 883         { 0xFF, "0 kbps" },
 884         { 0, NULL }
 885 };
 886
 887 static const value_string qos_res_ber[] = {
 888         { 0x00, "Subscribed residual BER (in MS to network direction)" },
 889         { 0x01, "1/20 = 5x10^-2" },
 890         { 0x02, "1/100 = 1x10^-2" },
 891         { 0x03, "1/200 = 5x10^-3" },
 892         { 0x04, "1/250 = 4x10^-3" },
 893         { 0x05, "1/1 000 = 1x10^-3" },
 894         { 0x06, "1/10 000 = 1x10^-4" },
 895         { 0x07, "1/100 000 = 1x10^-5" },
 896         { 0x08, "1/1 000 000 = 1x10^-6" },
 897         { 0x09, "3/50 000 000 = 6x10^-8" },
 898         { 0x0F, "Reserved" },           /* All other values are reserved */
 899         { 0, NULL }
 900 };
 901
 902 static const value_string qos_sdu_err_ratio[] = {
 903         { 0x00, "Subscribed SDU error ratio (in MS to network direction)" },
 904         { 0x01, "1/100 = 1x10^-2" },
 905         { 0x02, "7/1000 = 7x10^-3" },
 906         { 0x03, "1/1 000 = 1x10^-3" },
 907         { 0x04, "1/10 000 = 1x10^-4" },
 908         { 0x05, "1/100 000 = 1x10^-5" },
 909         { 0x06, "1/1 000 000 = 1x10^-6" },
 910         { 0x07, "1/10 = 1x10^-1" },
 911         { 0x0F, "Reserved" },           /* All other values are reserved */
 912         { 0, NULL }
 913 };
 914
 915 static const value_string qos_traf_handl_prio[] = {
 916         { 0x00, "Subscribed traffic handling priority (in MS to network direction)" },
 917         { 0x01, "Priority level 1" },
 918         { 0x02, "Priority level 2" },
 919         { 0x03, "Priority level 3" },
 920         { 0, NULL }
 921 };
 922
 923 static const value_string qos_trans_delay[] = {
 924         { 0x00, "Subscribed Transfer Delay (in MS to network direction)" },
 925         { 0x01, "10 ms" },      /* Using a granularity of 10 ms */
 926         { 0x02, "20 ms" },
 927         { 0x03, "30 ms" },
 928         { 0x04, "40 ms" },
 929         { 0x05, "50 ms" },
 930         { 0x06, "60 ms" },
 931         { 0x07, "70 ms" },
 932         { 0x08, "80 ms" },
 933         { 0x09, "90 ms" },
 934         { 0x0A, "100 ms" },
 935         { 0x0B, "110 ms" },
 936         { 0x0C, "120 ms" },
 937         { 0x0D, "130 ms" },
 938         { 0x0E, "140 ms" },
 939         { 0x0F, "150 ms" },
 940         { 0x10, "200 ms" },     /* (For values from 0x10 to 0x1F, value = 200 ms + (value - 0x10) * 50 ms */
 941         { 0x11, "250 ms" },
 942         { 0x12, "300 ms" },
 943         { 0x13, "350 ms" },
 944         { 0x14, "400 ms" },
 945         { 0x15, "450 ms" },
 946         { 0x16, "500 ms" },
 947         { 0x17, "550 ms" },
 948         { 0x18, "600 ms" },
 949         { 0x19, "650 ms" },
 950         { 0x1A, "700 ms" },
 951         { 0x1B, "750 ms" },
 952         { 0x1C, "800 ms" },
 953         { 0x1D, "850 ms" },
 954         { 0x1E, "900 ms" },
 955         { 0x1F, "950 ms" },
 956         { 0x20, "1000 ms" },    /* For values from 0x20 to 0x3E, value = 1000 ms + (value - 0x20) * 100 ms */
 957         { 0x21, "1100 ms" },
 958         { 0x22, "1200 ms" },
 959         { 0x23, "1300 ms" },
 960         { 0x24, "1400 ms" },
 961         { 0x25, "1500 ms" },
 962         { 0x26, "1600 ms" },
 963         { 0x27, "1700 ms" },
 964         { 0x28, "1800 ms" },
 965         { 0x29, "1900 ms" },
 966         { 0x2A, "2000 ms" },
 967         { 0x2B, "2100 ms" },
 968         { 0x2C, "2200 ms" },
 969         { 0x2D, "2300 ms" },
 970         { 0x2E, "2400 ms" },
 971         { 0x2F, "2500 ms" },
 972         { 0x30, "2600 ms" },
 973         { 0x31, "2700 ms" },
 974         { 0x32, "2800 ms" },
 975         { 0x33, "2900 ms" },
 976         { 0x34, "3000 ms" },
 977         { 0x35, "3100 ms" },
 978         { 0x36, "3200 ms" },
 979         { 0x37, "3300 ms" },
 980         { 0x38, "3400 ms" },
 981         { 0x39, "3500 ms" },
 982         { 0x3A, "3600 ms" },
 983         { 0x3B, "3700 ms" },
 984         { 0x3C, "3800 ms" },
 985         { 0x3D, "3900 ms" },
 986         { 0x3E, "4000 ms" },
 987         { 0x3F, "Reserved"},
 988         { 0, NULL }
 989 };
 990
 991 static const value_string qos_guar_ul[] = {
 992         { 0x00, "Subscribed guaranteed bit rate for uplink (in MS to network direction)" },
 993         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
 994         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
 995         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
 996         { 0xFF, "0 kbps" },
 997         { 0, NULL }
 998 };
 999
1000 static const value_string qos_guar_dl[] = {
1001         { 0x00, "Subscribed guaranteed bit rate for downlink (in MS to network direction)" },
1002         /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
1003         /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
1004         /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
1005         { 0xFF, "0 kbps" },
1006         { 0, NULL }
1007 };
1008
1009 static const value_string sel_mode_type[] = {
1010         { 0,    "MS or network provided APN, subscriber verified" },
1011         { 1,    "MS provided APN, subscription not verified" },
1012         { 2,    "Network provided APN, subscription not verified" },
1013         { 3,    "For future use (Network provided APN, subscription not verified" },/* Shall not be sent. If received, shall be sent as value 2 */
1014         { 0,    NULL }
1015 };
1016
1017 static const value_string tr_comm_type[] = {
1018         { 1,    "Send data record packet" },
1019         { 2,    "Send possibly duplicated data record packet" },
1020         { 3,    "Cancel data record packet" },
1021         { 4,    "Release data record packet"},
1022         { 0,    NULL }
1023 };
1024
1025 /* TODO: CHeck if all ms_reasons are included */
1026 static const value_string ms_not_reachable_type[] = {
1027         { 0,    "No paging response via the MSC" },
1028         { 1,    "IMSI detached" },
1029         { 2,    "Roaming restriction" },
1030         { 3,    "Deregistered in the HLR for non GPRS" },
1031         { 4,    "MS purge for non GPRS" },
1032         { 5,    "No paging response via the SGSN" },
1033         { 6,    "GPRS detached" },
1034         { 7,    "Deregistered in the HLR for non GPRS" },
1035         { 8,    "MS purged for GPRS" },
1036         { 9,    "Unidentified subscriber via the MSC" },
1037         { 10,   "Unidentified subscriber via the SGSN" },
1038         { 0,    NULL }
1039 };
1040
1041 /* UMTS:        25.413 v3.4.0, chapter 9.2.1.4, page 80
1042  */
1043 static const value_string ranap_cause_type[] = {
1044 /* Radio Network Layer Cause (1-->64) */
1045         { 1, "RAB preempted" },
1046         { 2, "Trelocoverall Expiry" },
1047         { 3, "Trelocprep Expiry" },
1048         { 4, "Treloccomplete Expiry" },
1049         { 5, "Tqueing Expiry" },
1050         { 6, "Relocation Triggered" },
1051         { 7, "TRELOCalloc Expiry" },
1052         { 8, "Unable to Estabish During Relocation" },
1053         { 9, "Unknown Target RNC" },
1054         { 10, "Relocation Cancelled" },
1055         { 11, "Successful Relocation" },
1056         { 12, "Requested Ciphering and/or Integrity Protection Algorithms not Supported" },
1057         { 13, "Change of Ciphering and/or Integrity Protection is not supported" },
1058         { 14, "Failure in the Radio Interface Procedure" },
1059         { 15, "Release due to UTRAN Generated Reason" },
1060         { 16, "User Inactivity" },
1061         { 17, "Time Critical Relocation" },
1062         { 18, "Requested Traffic Class not Available" },
1063         { 19, "Invalid RAB Parameters Value" },
1064         { 20, "Requested Maximum Bit Rate not Available" },
1065         { 21, "Requested Guaranteed Bit Rate not Available" },
1066         { 22, "Requested Transfer Delay not Achievable" },
1067         { 23, "Invalid RAB Parameters Combination" },
1068         { 24, "Condition Violation for SDU Parameters" },
1069         { 25, "Condition Violation for Traffic Handling Priority" },
1070         { 26, "Condition Violation for Guaranteed Bit Rate" },
1071         { 27, "User Plane Versions not Supported" },
1072         { 28, "Iu UP Failure" },
1073         { 29, "Relocation Failure in Target CN/RNC or Target System" },
1074         { 30, "Invalid RAB ID" },
1075         { 31, "No Remaining RAB" },
1076         { 32, "Interaction with other procedure" },
1077         { 33, "Requested Maximum Bit Rate for DL not Available" },
1078         { 34, "Requested Maximum Bit Rate for UL not Available" },
1079         { 35, "Requested Guaranteed Bit Rate for DL not Available" },
1080         { 36, "Requested Guaranteed Bit Rate for UL not Available" },
1081         { 37, "Repeated Integrity Checking Failure" },
1082         { 38, "Requested Report Type not supported" },
1083         { 39, "Request superseded" },
1084         { 40, "Release due to UE generated signalling connection release" },
1085         { 41, "Resource Optimisation Relocation" },
1086         { 42, "Requested Information Not Available" },
1087         { 43, "Relocation desirable for radio reasons" },
1088         { 44, "Relocation not supported in Target RNC or Target System" },
1089         { 45, "Directed Retry" },
1090         { 46, "Radio Connection With UE Lost" },
1091 /* Transport Layer Cause (65-->80) */
1092         { 65, "Signalling Transport Resource Failure" },
1093         { 66, "Iu Transport Connection Failed to Establish" },
1094 /* NAS Cause (81-->96) */
1095         { 81, "User Restriction Start Indication" },
1096         { 82, "User Restriction End Indication" },
1097         { 83, "Normal Release" },
1098 /* Protocol Cause (97-->112) */
1099         { 97, "Transfer Syntax Error" },
1100         { 98, "Semantic Error" },
1101         { 99, "Message not compatible with receiver state" },
1102         { 100, "Abstract Syntax Error (Reject)" },
1103         { 101, "Abstract Syntax Error (Ignore and Notify)" },
1104         { 102, "Abstract Syntax Error (Falsely Constructed Message" },
1105 /* Miscellaneous Cause (113-->128) */
1106         { 113, "O & M Intervention" },
1107         { 114, "No Resource Available" },
1108         { 115, "Unspecified Failure" },
1109         { 116, "Network Opimisation" },
1110 /* Non-standard Cause (129-->255) */
1111         { 0, NULL }
1112 };
1113
1114 static const value_string mm_sec_modep[] = {
1115         { 0,    "Used cipher value, UMTS keys and Quintuplets" },
1116         { 1,    "GSM key and triplets" },
1117         { 2,    "UMTS key and quintuplets" },
1118         { 3,    "GSM key and quintuplets" },
1119         { 0,    NULL }
1120 };
1121
1122 static const value_string mm_proto_disc[] = {
1123         { 0x00, "Group call control" },
1124         { 0x01, "Broadcast call control" },
1125         { 0x02, "PDSS1" },
1126         { 0x03, "Call control; call related SS messages" },
1127         { 0x04, "PDSS2" },
1128         { 0x05, "Mobility Management messages for non-GPRS services" },
1129         { 0x06, "Radio Resource management messages" },
1130         { 0x08, "Mobility Management messages for GPRS services" },
1131         { 0x09, "SMS" },
1132         { 0x0A, "Session Management messages" },
1133         { 0x0B, "Non-call related SS messages" },
1134         { 0, NULL }
1135 };
1136
1137 static const value_string mm_rr_mess[] = {
1138         { 0x3C, "RR initialization request" },
1139         { 0x3B, "Additional assignment" },
1140         { 0x3F, "Immediate assignment" },
1141         { 0x39, "Immediate assignment extended" },
1142         { 0x3A, "Immediate assignment reject" },
1143
1144         { 0x35, "Ciphering mode command" },
1145         { 0x32, "Ciphering mode complete" },
1146
1147         { 0x30, "Configuration change command" },
1148         { 0x31, "Configuration change ack" },
1149         { 0x33, "Configuration change reject" },
1150
1151         { 0x2E, "Assignment command" },
1152         { 0x29, "Assignment complete" },
1153         { 0x2F, "Assigment failure" },
1154         { 0x2B, "Handover command" },
1155         { 0x2C, "Handover complete" },
1156         { 0x28, "Handover failure" },
1157         { 0x2D, "Physical information" },
1158
1159         { 0x08, "RR-cell change order" },
1160         { 0x23, "PDCH assignment command" },
1161
1162         { 0x0D, "Channel release" },
1163         { 0x0A, "Partial release" },
1164         { 0x0F, "PArtial release complete" },
1165
1166         { 0x21, "Paging request type 1" },
1167         { 0x22, "Paging request type 2" },
1168         { 0x24, "Paging request type 3" },
1169         { 0x27, "Paging response" },
1170         { 0x20, "Notification/NCH" },
1171         { 0x25, "Notification/FACCH" },
1172         { 0x26, "Reserved" },
1173         { 0x0B, "Reserved" },
1174
1175         { 0x18, "System information type 8" },
1176         { 0x19, "System information type 1" },
1177         { 0x1A, "System information type 2" },
1178         { 0x1B, "System information type 3" },
1179         { 0x1C, "System information type 4" },
1180         { 0x1D, "System information type 5" },
1181         { 0x1E, "System information type 6" },
1182         { 0x1F, "System information type 7" },
1183
1184         { 0x02, "System information type 2bis" },
1185         { 0x03, "System information type 2ter" },
1186         { 0x05, "System information type 5bis" },
1187         { 0x06, "System information type 5ter" },
1188         { 0x04, "System information 9" },
1189         { 0x00, "System information 13" },
1190         { 0x01, "System information 14" },
1191
1192         { 0x3D, "System information type 16" },
1193         { 0x3E, "System information type 17" },
1194
1195         { 0x10, "Channel mode modify" },
1196         { 0x12, "RR status" },
1197         { 0x17, "Channel mode modify ack" },
1198         { 0x14, "Frequency redefinition " },
1199         { 0x15, "Measurement report" },
1200         { 0x16, "Classmark change" },
1201         { 0x13, "Classmark enquiry" },
1202         { 0x36, "Extended measurement report" },
1203         { 0x37, "Extended measurement order" },
1204         { 0x34, "GPRS suspension request" },
1205
1206         { 0x09, "VGCS uplink grant" },
1207         { 0x0E, "Uplink release" },
1208         { 0x0C, "Uplink free" },
1209         { 0x2A, "Uplink busy" },
1210         { 0x11, "Talker indication" },
1211
1212         { 0, NULL }
1213 };
1214
1215 static const value_string mm_mm_mess[] = {
1216         { 0x01, "IMSI DETACH INDICATION" },
1217         { 0x02, "LOCATION UPDATING ACCEPT" },
1218         { 0x04, "LOCATION UPDATING REJECT" },
1219         { 0x08, "LOCATION UPDATING REQUEST" },
1220         { 0x11, "AUTHENTICATION REJECT" },
1221         { 0x12, "AUTHENTICATION REQUEST" },
1222         { 0x14, "AUTHENTICATION RESPONSE" },
1223         { 0x18, "IDENTITY REQUEST" },
1224         { 0x19, "IDENTITY RESPONSE" },
1225         { 0x1A, "TMSI REALLOCATION COMMAND" },
1226         { 0x1B, "TMSI REALLOCATION COMPLETE" },
1227         { 0x21, "CM SERVICE ACCEPT" },
1228         { 0x22, "CM SERVICE REJECT" },
1229         { 0x23, "CM SERVICE ABORT" },
1230         { 0x24, "CM SERVICE REQUEST" },
1231         { 0x25, "CM SERVICE PROMPT" },
1232         { 0x26, "NOTIFICATION RESPONSE" },
1233         { 0x28, "CM RE-ESTABLISHMENT REQUEST" },
1234         { 0x29, "ABORT" },
1235         { 0x30, "MM NULL" },
1236         { 0x31, "MM STATUS" },
1237         { 0x32, "MM INFORMATION" },
1238         { 0, NULL }
1239 };
1240
1241 static const value_string mm_cc_mess[] = {
1242         { 0x00, "escape to nationally specific" },
1243 /*{ 0 x 0 0, "- - - Call establishment messages:" },*/
1244         { 0x01, "ALERTING" },
1245         { 0x08, "CALL CONFIRMED" },
1246         { 0x02, "CALL PROCEEDING" },
1247         { 0x07, "CONNECT" },
1248         { 0x0F, "CONNECT ACKNOWLEDGE" },
1249         { 0x0E, "EMERGENCY SETUP" },
1250         { 0x03, "PROGRESS" },
1251         { 0x04, "CC-ESTABLISHMENT" },
1252         { 0x06, "CC-ESTABLISHMENT CONFIRMED" },
1253         { 0x0B, "RECALL" },
1254         { 0x09, "START CC" },
1255         { 0x05, "SETUP" },
1256 /*{ 0 x 0 1, "- - - Call information phase messages:" },*/
1257         { 0x17, "MODIFY" },
1258         { 0x1F, "MODIFY COMPLETE" },
1259         { 0x13, "MODIFY REJECT" },
1260         { 0x10, "USER INFORMATION" },
1261         { 0x18, "HOLD" },
1262         { 0x19, "HOLD ACKNOWLEDGE" },
1263         { 0x1A, "HOLD REJECT" },
1264         { 0x1C, "RETRIEVE" },
1265         { 0x1D, "RETRIEVE ACKNOWLEDGE" },
1266         { 0x1E, "RETRIEVE REJECT" },
1267 /*{ 0 x 1 0, "- - - Call clearing messages:" },*/
1268         { 0x25, "DISCONNECT" },
1269         { 0x2D, "RELEASE" },
1270         { 0x2A, "RELEASE COMPLETE" },
1271 /*{ 0 x 1 1, "- - - Miscellaneous messages:" },*/
1272         { 0x39, "CONGESTION CONTROL" },
1273         { 0x3E, "NOTIFY" },
1274         { 0x3D, "STATUS" },
1275         { 0x34, "STATUS ENQUIRY" },
1276         { 0x35, "START DTMF" },
1277         { 0x31, "STOP DTMF" },
1278         { 0x32, "STOP DTMF ACKNOWLEDGE" },
1279         { 0x36, "START DTMF ACKNOWLEDGE" },
1280         { 0x37, "START DTMF REJECT" },
1281         { 0x3A, "FACILITY" },
1282         { 0, NULL }
1283 };
1284
1285 static const value_string mm_gprs_mess[] = {
1286         { 0x01, "Attach request" },
1287         { 0x02, "Attach accept" },
1288         { 0x03, "Attach complete" },
1289         { 0x04, "Attach reject" },
1290         { 0x05, "Detach request" },
1291         { 0x06, "Detach accept" },
1292         { 0x08, "Routing area update request" },
1293         { 0x09, "Routing area update accept" },
1294         { 0x0A, "Routing area update complete" },
1295         { 0x0B, "Routing area update reject" },
1296         { 0x10, "P-TMSI reallocation command" },
1297         { 0x11, "P-TMSI reallocation complete" },
1298         { 0x12, "Authentication and ciphering req" },
1299         { 0x13, "Authentication and ciphering resp" },
1300         { 0x14, "Authentication and ciphering rej" },
1301         { 0x15, "Identity request" },
1302         { 0x16, "Identity response" },
1303         { 0x20, "GMM status" },
1304         { 0x21, "GMM information" },
1305         { 0, NULL }
1306 };
1307
1308 static const value_string tft_code_type[] = {
1309         { 0, "Spare" },
1310         { 1, "Create new TFT" },
1311         { 2, "Delete existing TFT" },
1312         { 3, "Add packet filters to existing TFT" },
1313         { 4, "Replace packet filters in existing TFT" },
1314         { 5, "Delete packet filters from existing TFT" },
1315         { 6, "Reserved" },
1316         { 7, "Reserved" },
1317         { 0, NULL }
1318 };
1319
1320 static const value_string cdr_close_type[] = {
1321         { 0, "PDP release" },
1322         { 1, "Volume limit" },
1323         { 2, "Time limit" },
1324         { 3, "SGSN change" },
1325         { 4, "Max changes" },
1326         { 6, "Management" },
1327         { 7, "Abnormal" },
1328         { 0, NULL }
1329 };
1330
1331 static dissector_handle_t ip_handle;
1332 static dissector_handle_t ppp_handle;
1333
1334 static int decode_gtp_cause             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1335 static int decode_gtp_imsi              (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1336 static int decode_gtp_rai               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1337 static int decode_gtp_tlli              (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1338 static int decode_gtp_ptmsi             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1339 static int decode_gtp_qos_gprs          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1340 static int decode_gtp_reorder           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1341 static int decode_gtp_auth_tri          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1342 static int decode_gtp_map_cause         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1343 static int decode_gtp_ptmsi_sig         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1344 static int decode_gtp_ms_valid          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1345 static int decode_gtp_recovery          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1346 static int decode_gtp_sel_mode          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1347 static int decode_gtp_16                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1348 static int decode_gtp_17                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1349 static int decode_gtp_18                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1350 static int decode_gtp_19                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1351 static int decode_gtp_nsapi             (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1352 static int decode_gtp_ranap_cause       (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1353 static int decode_gtp_rab_cntxt         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1354 static int decode_gtp_rp_sms            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1355 static int decode_gtp_rp                (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1356 static int decode_gtp_pkt_flow_id       (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1357 static int decode_gtp_chrg_char         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1358 static int decode_gtp_trace_ref         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1359 static int decode_gtp_trace_type        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1360 static int decode_gtp_ms_reason         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1361 static int decode_gtp_tr_comm           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1362 static int decode_gtp_chrg_id           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1363 static int decode_gtp_user_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1364 static int decode_gtp_mm_cntxt          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1365 static int decode_gtp_pdp_cntxt         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1366 static int decode_gtp_apn               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1367 static int decode_gtp_gsn_addr          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1368 static int decode_gtp_proto_conf        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1369 static int decode_gtp_msisdn            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1370 static int decode_gtp_qos_umts          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1371 static int decode_gtp_auth_qui          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1372 static int decode_gtp_tft               (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1373 static int decode_gtp_target_id         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1374 static int decode_gtp_utran_cont        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1375 static int decode_gtp_rab_setup         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1376 static int decode_gtp_hdr_list          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1377 static int decode_gtp_trigger_id        (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1378 static int decode_gtp_omc_id            (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1379 static int decode_gtp_chrg_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1380 static int decode_gtp_rel_pack          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1381 static int decode_gtp_can_pack          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1382 static int decode_gtp_data_req          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1383 static int decode_gtp_data_resp         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1384 static int decode_gtp_node_addr         (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1385 static int decode_gtp_priv_ext          (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1386 static int decode_gtp_unknown           (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
1387
1388 typedef struct _gtp_opt {
1389         int   optcode;
1390 /*      char  *name; */
1391         int  (*decode)(tvbuff_t  *, int, packet_info *, proto_tree *);
1392 } gtp_opt_t;
1393
1394 static const gtp_opt_t gtpopt[] = {
1395         { GTP_EXT_CAUSE,        decode_gtp_cause },
1396         { GTP_EXT_IMSI,         decode_gtp_imsi },
1397         { GTP_EXT_RAI,          decode_gtp_rai },
1398         { GTP_EXT_TLLI,         decode_gtp_tlli },
1399         { GTP_EXT_PTMSI,        decode_gtp_ptmsi },
1400         { GTP_EXT_QOS_GPRS,     decode_gtp_qos_gprs },
1401         { GTP_EXT_REORDER,      decode_gtp_reorder },
1402         { GTP_EXT_AUTH_TRI,     decode_gtp_auth_tri },
1403         { GTP_EXT_MAP_CAUSE,    decode_gtp_map_cause },
1404         { GTP_EXT_PTMSI_SIG,    decode_gtp_ptmsi_sig },
1405         { GTP_EXT_MS_VALID,     decode_gtp_ms_valid },
1406         { GTP_EXT_RECOVER,      decode_gtp_recovery },
1407         { GTP_EXT_SEL_MODE,     decode_gtp_sel_mode },
1408         { GTP_EXT_16,           decode_gtp_16 },
1409         { GTP_EXT_17,           decode_gtp_17 },
1410         { GTP_EXT_18,           decode_gtp_18 },
1411         { GTP_EXT_19,           decode_gtp_19 },
1412         { GTP_EXT_NSAPI,        decode_gtp_nsapi },
1413         { GTP_EXT_RANAP_CAUSE,  decode_gtp_ranap_cause },
1414         { GTP_EXT_RAB_CNTXT,    decode_gtp_rab_cntxt },
1415         { GTP_EXT_RP_SMS,       decode_gtp_rp_sms },
1416         { GTP_EXT_RP,           decode_gtp_rp },
1417         { GTP_EXT_PKT_FLOW_ID,  decode_gtp_pkt_flow_id },
1418         { GTP_EXT_CHRG_CHAR,    decode_gtp_chrg_char },
1419         { GTP_EXT_TRACE_REF,    decode_gtp_trace_ref },
1420         { GTP_EXT_TRACE_TYPE,   decode_gtp_trace_type },
1421         { GTPv1_EXT_MS_REASON,  decode_gtp_ms_reason },
1422         { GTP_EXT_TR_COMM,      decode_gtp_tr_comm },
1423         { GTP_EXT_CHRG_ID,      decode_gtp_chrg_id },
1424         { GTP_EXT_USER_ADDR,    decode_gtp_user_addr },
1425         { GTP_EXT_MM_CNTXT,     decode_gtp_mm_cntxt },
1426         { GTP_EXT_PDP_CNTXT,    decode_gtp_pdp_cntxt },
1427         { GTP_EXT_APN,          decode_gtp_apn },
1428         { GTP_EXT_PROTO_CONF,   decode_gtp_proto_conf },
1429         { GTP_EXT_GSN_ADDR,     decode_gtp_gsn_addr },
1430         { GTP_EXT_MSISDN,       decode_gtp_msisdn },
1431         { GTP_EXT_QOS_UMTS,     decode_gtp_qos_umts },                          /* 3G */
1432         { GTP_EXT_AUTH_QUI,     decode_gtp_auth_qui },                          /* 3G */
1433         { GTP_EXT_TFT,          decode_gtp_tft },                               /* 3G */
1434         { GTP_EXT_TARGET_ID,    decode_gtp_target_id },                 /* 3G */
1435         { GTP_EXT_UTRAN_CONT,   decode_gtp_utran_cont },                        /* 3G */
1436         { GTP_EXT_RAB_SETUP,    decode_gtp_rab_setup },                 /* 3G */
1437         { GTP_EXT_HDR_LIST,     decode_gtp_hdr_list },                          /* 3G */
1438         { GTP_EXT_TRIGGER_ID,   decode_gtp_trigger_id },                        /* 3G */
1439         { GTP_EXT_OMC_ID,       decode_gtp_omc_id },                            /* 3G */
1440         { GTP_EXT_REL_PACK,     decode_gtp_rel_pack },                          /* charging */
1441         { GTP_EXT_CAN_PACK,     decode_gtp_can_pack },                  /* charging */
1442         { GTP_EXT_CHRG_ADDR,    decode_gtp_chrg_addr },
1443         { GTP_EXT_DATA_REQ,     decode_gtp_data_req },                          /* charging */
1444         { GTP_EXT_DATA_RESP,    decode_gtp_data_resp },                 /* charging */
1445         { GTP_EXT_NODE_ADDR,    decode_gtp_node_addr },
1446         { GTP_EXT_PRIV_EXT,     decode_gtp_priv_ext },
1447         { 0,                    decode_gtp_unknown }
1448 };
1449
1450 typedef struct {
1451         guint8          flags;
1452         guint8          message;
1453         guint16         length;
1454         guint16         seq_no;
1455         guint16         flow_label;
1456         guint8          sndcp_no;
1457         guint8          spare[3];
1458         guint8          tid[8];
1459 } _gtpv0_hdr;
1460
1461 typedef struct {
1462         guint8          flags;
1463         guint8          message;
1464         guint16         length;
1465         guint32         teid;
1466 } _gtpv1_hdr;
1467
1468 struct gcdr_ {                                  /* GCDR 118B */
1469         guint8          imsi[8];
1470         guint32         ggsnaddr;
1471         guint32         chrgid;
1472         guint32         sgsnaddr;
1473         gchar           apn[63];
1474         guint8          pdporg;
1475         guint8          pdptype;
1476         guint32         pdpaddr;
1477         guint8          addrflag;
1478         guint8          qos[3];
1479         guint32         uplink;
1480         guint32         downlink;
1481         guint32         timestamp;
1482         guint32         opening;
1483         guint32         duration;
1484         guint8          closecause;
1485         guint32         seqno;
1486         guint8          msisdn[9];
1487 } gcdr;
1488
1489 typedef struct change_ {
1490         guint8          change;
1491         guint32         time1;
1492         guint32         time2;
1493         guint32         uplink;
1494         guint32         downlink;
1495         guint8          qos_req[3];
1496         guint8          qos_neg[3];
1497 } change_t;
1498
1499 struct _scdr {                                  /* SCDR 277B */
1500         guint16         len;
1501         guint8          netini;
1502         guint8          anon;
1503         guint8          imsilen;
1504         guint8          imsi[8];
1505         guint8          imei[8];
1506         guint8          msisdnlen;
1507         guint8          msisdn[10];
1508         guint32         sgsnaddr;
1509         guint8          msclass_notused[12];
1510         guint8          msclass_caplen;
1511         guint8          msclass_cap;
1512         guint16         msclass_capomit;
1513         guint16         lac;
1514         guint8          rac;
1515         guint16         cid;
1516         guint32         chrgid;
1517         guint32         ggsnaddr;
1518         gchar           apn[64];
1519         guint8          pdporg;
1520         guint8          pdptype;
1521         guint32         pdpaddr;
1522         guint8          listind;
1523         change_t        change[5];
1524         guint32         timestamp;
1525         guint32         opening;
1526         guint32         duration;
1527         guint8          sgsnchange;
1528         guint8          closecause;
1529         guint8          diag1;
1530         guint8          diag2;
1531         guint8          diag3;
1532         guint8          diag4;
1533         guint32         diag5;
1534         guint32         seqno;
1535 } scdr;
1536
1537 typedef struct mmchange_ {
1538         guint16         lac;
1539         guint8          rac;
1540         guint16         cid;
1541         guint8          omit[8];
1542 } mmchange_t;
1543
1544 struct _mcdr {                                  /* MCDR 147B */
1545         guint16         len;
1546         guint8          imsilen;
1547         guint8          imsi[8];
1548         guint8          imei[8];
1549         guint8          msisdnlen;
1550         guint8          msisdn[10];
1551         guint32         sgsnaddr;
1552         guint8          msclass_notused[12];
1553         guint8          msclass_caplen;
1554         guint8          msclass_cap;
1555         guint16         msclass_capomit;
1556         guint16         lac;
1557         guint8          rac;
1558         guint16         cid;
1559         guint8          change_count;
1560         mmchange_t      change[5];
1561         guint32         timestamp;
1562         guint32         opening;
1563 /*      guint8          opening[8]; */
1564         guint32         duration;
1565         guint8          sgsnchange;
1566         guint8          closecause;
1567         guint8          diag1;
1568         guint8          diag2;
1569         guint8          diag3;
1570         guint8          diag4;
1571         guint32         diag5;
1572         guint32         seqno;
1573 } mcdr;
1574
1575 struct _socdr {                                         /* SOCDR 80B */
1576         guint16         len;
1577         guint8          imsilen;
1578         guint8          imsi[8];
1579         guint8          imei[8];
1580         guint8          msisdnlen;
1581         guint8          msisdn[10];
1582         guint8          msclass_notused[12];
1583         guint8          msclass_caplen;
1584         guint8          msclass_cap;
1585         guint16         msclass_capomit;
1586         guint8          serv_centr[9];
1587         guint8          rec_ent[9];
1588         guint16         lac;
1589         guint8          rac;
1590         guint16         cid;
1591         guint32         time1;
1592         guint32         time2;
1593         guint8          messref;
1594         guint16         smsres;
1595 } socdr;
1596
1597
1598 struct _stcdr {                                         /* STCDR 79B */
1599         guint16         len;
1600         guint8          imsilen;
1601         guint8          imsi[8];
1602         guint8          imei[8];
1603         guint8          msisdnlen;
1604         guint8          msisdn[10];
1605         guint8          msclass_notused[12];
1606         guint8          msclass_caplen;
1607         guint8          msclass_cap;
1608         guint16         msclass_capomit;
1609         guint8          serv_centr[9];
1610         guint8          rec_ent[9];
1611         guint16         lac;
1612         guint8          rac;
1613         guint16         cid;
1614         guint32         time1;
1615         guint32         time2;
1616         guint16         smsres;
1617 } stcdr;
1618
1619         guint8          gtp_version = 0;
1620         char            *yesno[] = { "False", "True" };
1621
1622 static void
1623 col_append_str_gtp(column_info *cinfo, gint el, gchar *proto_name) {
1624
1625         int     i;
1626         int     max_len;
1627         gchar   _tmp[COL_MAX_LEN];
1628
1629         max_len = COL_MAX_LEN;
1630
1631         for (i = 0; i < cinfo->num_cols; i++) {
1632                 if (cinfo->fmt_matx[i][el]) {
1633                         if (cinfo->col_data[i] != cinfo->col_buf[i]) {
1634
1635                                 strncpy(cinfo->col_buf[i], cinfo->col_data[i], max_len);
1636                                 cinfo->col_buf[i][max_len - 1] = '\0';
1637                         }
1638
1639                         _tmp[0] = '\0';
1640                         strcat(_tmp, proto_name);
1641                         strcat(_tmp, " <");
1642                         strcat(_tmp, cinfo->col_buf[i]);
1643                         strcat(_tmp, ">");
1644                         cinfo->col_buf[i][0] = '\0';
1645                         strcat(cinfo->col_buf[i], _tmp);
1646                         cinfo->col_data[i] = cinfo->col_buf[i];
1647                 }
1648         }
1649 }
1650
1651 static gchar *
1652 id_to_str(const guint8 *ad) {
1653
1654         static gchar    *str[17];
1655         gchar           *p;
1656         guint8          bits8to5, bits4to1, i;
1657         static const    gchar hex_digits[10] = "0123456789";
1658
1659         p = (gchar *)&str[17];
1660         *--p = '\0';
1661         i = 7;
1662         for (;;) {
1663                 bits8to5 = (ad[i] >> 4) & 0x0F;
1664                 bits4to1 = ad[i] & 0x0F;
1665                 if (bits8to5 < 0xA) *--p = hex_digits[bits8to5];
1666                 if (bits4to1 < 0xA) *--p = hex_digits[bits4to1];
1667                 if (i == 0) break;
1668                 i--;
1669         }
1670         return p;
1671 }
1672
1673 static gchar *
1674 msisdn_to_str(const guint8 *ad, int len) {
1675
1676         static gchar    *str[17];
1677         gchar           *p;
1678         guint8          bits8to5, bits4to1, i;
1679         static const    gchar hex_digits[16] = "0123456789      ";
1680
1681         p = (gchar *)&str[0];
1682         *p = '+';
1683         i = 1;
1684         for (;;) {
1685                 bits8to5 = (ad[i] >> 4) & 0x0F;
1686                 bits4to1 = ad[i] & 0x0F;
1687                 if (bits4to1 < 0xA) *++p = hex_digits[bits4to1];
1688                 if (bits8to5 < 0xA) *++p = hex_digits[bits8to5];
1689                 if (i == len-1) break;
1690                 i++;
1691         }
1692         *++p = '\0';
1693         return (gchar *)&str[0];
1694 }
1695
1696 gchar *
1697 time_int_to_str (guint32 time)
1698 {
1699
1700         nstime_t        nstime;
1701
1702         nstime.secs = time;
1703         nstime.nsecs = 0;
1704
1705         return abs_time_to_str (&nstime);
1706 }
1707
1708 gchar *
1709 rel_time_int_to_str (guint32 time)
1710 {
1711
1712         nstime_t        nstime;
1713
1714         nstime.secs = time;
1715         nstime.nsecs = 0;
1716
1717         return rel_time_to_str (&nstime);
1718 }
1719
1720 /* Next definitions and function check_field_presence checks if given field
1721  * in GTP packet is compliant with ETSI
1722  */
1723 typedef struct _header {
1724         guint8          code;
1725         guint8          presence;
1726 } ext_header;
1727
1728 typedef struct _message {
1729         guint8          code;
1730         ext_header      fields[32];
1731 } _gtp_mess_items;
1732
1733 /* ---------------------
1734  * GPRS messages
1735  * ---------------------*/
1736 static _gtp_mess_items gprs_mess_items[] = {
1737
1738 {
1739         GTP_MSG_ECHO_REQ, {
1740                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1741                 { 0,                    0 }
1742         }
1743 },
1744 {
1745         GTP_MSG_ECHO_RESP, {
1746                 { GTP_EXT_RECOVER,      MANDATORY },
1747                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1748                 { 0,                    0 }
1749         }
1750 },
1751 {
1752         GTP_MSG_VER_NOT_SUPP, {
1753                 { 0,                    0 }
1754         }
1755 },
1756 {
1757         GTP_MSG_NODE_ALIVE_REQ, {
1758                 { GTP_EXT_NODE_ADDR,    MANDATORY },
1759                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1760                 { 0,                    0 }
1761         }
1762 },
1763 {
1764         GTP_MSG_NODE_ALIVE_RESP, {
1765                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1766                 { 0,                    0 }
1767         }
1768 },
1769 {
1770         GTP_MSG_REDIR_REQ, {
1771                 { GTP_EXT_CAUSE,        MANDATORY },
1772                 { GTP_EXT_NODE_ADDR,    OPTIONAL },
1773                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1774                 { 0,                    0 }
1775         }
1776 },
1777 {
1778         GTP_MSG_REDIR_RESP, {
1779                 { GTP_EXT_CAUSE,        MANDATORY },
1780                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1781                 { 0,                    0 }
1782         }
1783 },
1784 {
1785         GTP_MSG_CREATE_PDP_REQ, {
1786                 { GTP_EXT_QOS_GPRS,     MANDATORY },
1787                 { GTP_EXT_RECOVER,      OPTIONAL },
1788                 { GTP_EXT_SEL_MODE,     MANDATORY },
1789                 { GTP_EXT_FLOW_LABEL,   MANDATORY },
1790                 { GTP_EXT_FLOW_SIG,     MANDATORY },
1791                 { GTP_EXT_MSISDN,       MANDATORY },
1792                 { GTP_EXT_USER_ADDR,    MANDATORY },
1793                 { GTP_EXT_APN,          MANDATORY },
1794                 { GTP_EXT_PROTO_CONF,   OPTIONAL },
1795                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1796                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1797                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1798                 { 0,                    0 }
1799         }
1800 },
1801 {
1802         GTP_MSG_CREATE_PDP_RESP, {
1803                 { GTP_EXT_CAUSE,        MANDATORY },
1804                 { GTP_EXT_QOS_GPRS,     CONDITIONAL },
1805                 { GTP_EXT_REORDER,      CONDITIONAL },
1806                 { GTP_EXT_RECOVER,      OPTIONAL },
1807                 { GTP_EXT_FLOW_LABEL,   CONDITIONAL },
1808                 { GTP_EXT_FLOW_SIG,     CONDITIONAL },
1809                 { GTP_EXT_CHRG_ID,      CONDITIONAL },
1810                 { GTP_EXT_USER_ADDR,    CONDITIONAL },
1811                 { GTP_EXT_PROTO_CONF,   OPTIONAL },
1812                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1813                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1814                 { GTP_EXT_CHRG_ADDR,    OPTIONAL },
1815                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1816                 { 0,                    0 }
1817         }
1818 },
1819 {
1820         GTP_MSG_UPDATE_PDP_REQ, {
1821                 { GTP_EXT_QOS_GPRS,     MANDATORY },
1822                 { GTP_EXT_RECOVER,      OPTIONAL },
1823                 { GTP_EXT_FLOW_LABEL,   MANDATORY },
1824                 { GTP_EXT_FLOW_SIG,     MANDATORY },
1825                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1826                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1827                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1828                 { 0,                    0 },
1829         }
1830 },
1831 {
1832         GTP_MSG_UPDATE_PDP_RESP, {
1833                 { GTP_EXT_CAUSE,        MANDATORY },
1834                 { GTP_EXT_QOS_GPRS,     CONDITIONAL },
1835                 { GTP_EXT_RECOVER,      OPTIONAL },
1836                 { GTP_EXT_FLOW_LABEL,   CONDITIONAL },
1837                 { GTP_EXT_FLOW_SIG,     CONDITIONAL },
1838                 { GTP_EXT_CHRG_ID,      CONDITIONAL },
1839                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1840                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1841                 { GTP_EXT_CHRG_ADDR,    OPTIONAL },
1842                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1843                 { 0,                    0 }
1844         }
1845 },
1846 {
1847         GTP_MSG_DELETE_PDP_REQ, {
1848                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1849                 { 0,                    0 }
1850         }
1851 },
1852 {
1853         GTP_MSG_DELETE_PDP_RESP, {
1854                 { GTP_EXT_CAUSE,        MANDATORY },
1855                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1856                 { 0,                    0 },
1857         }
1858 },
1859 {
1860         GTP_MSG_CREATE_AA_PDP_REQ, {
1861                 { GTP_EXT_QOS_GPRS,     MANDATORY },
1862                 { GTP_EXT_RECOVER,      OPTIONAL },
1863                 { GTP_EXT_SEL_MODE,     MANDATORY },
1864                 { GTP_EXT_FLOW_LABEL,   MANDATORY },
1865                 { GTP_EXT_FLOW_SIG,     MANDATORY },
1866                 { GTP_EXT_USER_ADDR,    MANDATORY },
1867                 { GTP_EXT_APN,          MANDATORY },
1868                 { GTP_EXT_PROTO_CONF,   OPTIONAL },
1869                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1870                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1871                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1872                 { 0,                    0 }
1873         }
1874 },
1875 {
1876         GTP_MSG_CREATE_AA_PDP_RESP, {
1877                 { GTP_EXT_CAUSE,        MANDATORY },
1878                 { GTP_EXT_QOS_GPRS,     CONDITIONAL },
1879                 { GTP_EXT_REORDER,      CONDITIONAL },
1880                 { GTP_EXT_RECOVER,      OPTIONAL },
1881                 { GTP_EXT_FLOW_LABEL,   CONDITIONAL },
1882                 { GTP_EXT_FLOW_SIG,     CONDITIONAL },
1883                 { GTP_EXT_CHRG_ID,      CONDITIONAL },
1884                 { GTP_EXT_USER_ADDR,    CONDITIONAL },
1885                 { GTP_EXT_PROTO_CONF,   OPTIONAL },
1886                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1887                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
1888                 { GTP_EXT_CHRG_ADDR,    OPTIONAL },
1889                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1890                 { 0,                    0 }
1891         }
1892 },
1893 {
1894         GTP_MSG_DELETE_AA_PDP_REQ, {
1895                 { GTP_EXT_CAUSE,        MANDATORY },
1896                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1897                 { 0,                    0 }
1898         }
1899 },
1900 {
1901         GTP_MSG_DELETE_AA_PDP_RESP, {
1902                 { GTP_EXT_CAUSE,        MANDATORY },
1903                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1904                 { 0,                    0 }
1905         }
1906 },
1907 {
1908         GTP_MSG_ERR_IND, {
1909                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1910                 { 0,                    0 }
1911         }
1912 },
1913 {
1914         GTP_MSG_PDU_NOTIFY_REQ, {
1915                 { GTP_EXT_USER_ADDR,    MANDATORY },
1916                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1917                 { 0,                    0 }
1918         }
1919 },
1920 {
1921         GTP_MSG_PDU_NOTIFY_RESP, {
1922                 { GTP_EXT_CAUSE,        MANDATORY },
1923                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1924                 { 0,                    0 }
1925         }
1926 },
1927 {
1928         GTP_MSG_PDU_NOTIFY_REJ_REQ, {
1929                 { GTP_EXT_CAUSE,        MANDATORY },
1930                 { GTP_EXT_USER_ADDR,    MANDATORY },
1931                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1932                 { 0,                    0 }
1933         }
1934 },
1935 {
1936         GTP_MSG_PDU_NOTIFY_REJ_RESP, {
1937                 { GTP_EXT_CAUSE,        MANDATORY },
1938                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1939                 { 0,                    0 }
1940         }
1941 },
1942 {
1943         GTP_MSG_SEND_ROUT_INFO_REQ, {
1944                 { GTP_EXT_IMSI,         MANDATORY },
1945                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1946                 { 0,                    0 }
1947         }
1948 },
1949 {
1950         GTP_MSG_SEND_ROUT_INFO_RESP, {
1951                 { GTP_EXT_CAUSE,        MANDATORY },
1952                 { GTP_EXT_IMSI,         MANDATORY },
1953                 { GTP_EXT_MAP_CAUSE,    OPTIONAL },
1954                 { GTP_EXT_MS_REASON,    OPTIONAL },
1955                 { GTP_EXT_GSN_ADDR,     OPTIONAL },
1956                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1957                 { 0,                    0 }
1958         }
1959 },
1960 {
1961         GTP_MSG_FAIL_REP_REQ, {
1962                 { GTP_EXT_IMSI,         MANDATORY },
1963                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1964                 { 0,                    0 }
1965         }
1966 },
1967 {
1968         GTP_MSG_FAIL_REP_RESP, {
1969                 { GTP_EXT_CAUSE,        MANDATORY },
1970                 { GTP_EXT_MAP_CAUSE,    OPTIONAL },
1971                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1972                 { 0,                    0 }
1973         }
1974 },
1975 {
1976         GTP_MSG_MS_PRESENT_REQ, {
1977                 { GTP_EXT_IMSI,         MANDATORY },
1978                 { GTP_EXT_GSN_ADDR,     MANDATORY },
1979                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1980                 { 0,                    0 }
1981         }
1982 },
1983 {
1984         GTP_MSG_MS_PRESENT_RESP, {
1985                 { GTP_EXT_CAUSE,        MANDATORY },
1986                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1987                 { 0,                    0 }
1988         }
1989 },
1990 {
1991         GTP_MSG_IDENT_REQ, {
1992                 { GTP_EXT_RAI,          MANDATORY },
1993                 { GTP_EXT_PTMSI,        MANDATORY },
1994                 { GTP_EXT_PTMSI_SIG,    OPTIONAL },
1995                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
1996                 { 0,                    0 }
1997         }
1998 },
1999 {
2000         GTP_MSG_IDENT_RESP, {
2001                 { GTP_EXT_CAUSE,        MANDATORY },
2002                 { GTP_EXT_IMSI,         CONDITIONAL },
2003                 { GTP_EXT_AUTH_TRI,     OPTIONAL },
2004                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2005                 { 0,                    0 }
2006         }
2007 },
2008 {
2009         GTP_MSG_SGSN_CNTXT_REQ, {
2010                 { GTP_EXT_IMSI,         CONDITIONAL },
2011                 { GTP_EXT_RAI,          MANDATORY },
2012                 { GTP_EXT_TLLI,         MANDATORY },
2013                 { GTP_EXT_PTMSI_SIG,    OPTIONAL },
2014                 { GTP_EXT_MS_VALID,     OPTIONAL },
2015                 { GTP_EXT_FLOW_SIG,     MANDATORY },
2016                 { 0,                    0 }
2017         }
2018 },
2019 {
2020         GTP_MSG_SGSN_CNTXT_RESP, {
2021                 { GTP_EXT_CAUSE,        MANDATORY },
2022                 { GTP_EXT_IMSI,         CONDITIONAL },
2023                 { GTP_EXT_FLOW_SIG,     CONDITIONAL },
2024                 { GTP_EXT_MM_CNTXT,     CONDITIONAL },
2025                 { GTP_EXT_PDP_CNTXT,    CONDITIONAL },
2026                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2027                 { 0,                    0 }
2028         }
2029 },
2030 {
2031         GTP_MSG_SGSN_CNTXT_ACK, {
2032                 { GTP_EXT_CAUSE,        MANDATORY },
2033                 { GTP_EXT_FLOW_II,      CONDITIONAL },
2034                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2035                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2036                 { 0,                    0 }
2037         }
2038 },
2039 {
2040         GTP_MSG_DATA_TRANSF_REQ, {
2041                 { GTP_EXT_TR_COMM,      MANDATORY },
2042                 { GTP_EXT_DATA_REQ,     CONDITIONAL },
2043                 { GTP_EXT_REL_PACK,     CONDITIONAL },
2044                 { GTP_EXT_CAN_PACK,     CONDITIONAL },
2045                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2046                 { 0,                    0 }
2047         }
2048 },
2049 {
2050         GTP_MSG_DATA_TRANSF_RESP, {
2051                 { GTP_EXT_CAUSE,        MANDATORY },
2052                 { GTP_EXT_DATA_RESP,    MANDATORY },
2053                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2054                 { 0,                    0 }
2055         }
2056 },
2057 {
2058         0, {
2059                 { 0,                    0 }
2060         }
2061 }
2062 };
2063
2064 /* -----------------------------
2065  * UMTS messages
2066  * -----------------------------*/
2067 static _gtp_mess_items umts_mess_items[] = {
2068
2069 {
2070         GTP_MSG_ECHO_REQ, {
2071                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2072                 { 0,                    0 }
2073         }
2074 },
2075 {
2076         GTP_MSG_ECHO_RESP, {
2077                 { GTP_EXT_RECOVER,      MANDATORY },
2078                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2079                 { 0,                    0 }
2080         }
2081 },
2082 {
2083         GTP_MSG_VER_NOT_SUPP, {
2084                 { 0,                    0 }
2085         }
2086 },
2087 {
2088         GTP_MSG_NODE_ALIVE_REQ, {
2089                 { GTP_EXT_NODE_ADDR,    MANDATORY },
2090                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2091                 { 0,                    0 }
2092         }
2093 },
2094 {
2095         GTP_MSG_NODE_ALIVE_RESP, {
2096                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2097                 { 0,                    0 }
2098         }
2099 },
2100 {
2101         GTP_MSG_REDIR_REQ, {
2102                 { GTP_EXT_CAUSE,        MANDATORY },
2103                 { GTP_EXT_NODE_ADDR,    OPTIONAL },
2104                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2105                 { 0,                    0 }
2106         }
2107 },
2108 {
2109         GTP_MSG_REDIR_REQ, {
2110                 { 0,                    0 }
2111         }
2112 },
2113 {
2114         GTP_MSG_CREATE_PDP_REQ, {
2115                 { GTP_EXT_IMSI,         CONDITIONAL },
2116                 { GTP_EXT_RECOVER,      OPTIONAL },
2117                 { GTP_EXT_SEL_MODE,     CONDITIONAL },
2118                 { GTP_EXT_TEID,         MANDATORY },
2119                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2120                 { GTP_EXT_NSAPI,        MANDATORY },
2121                 { GTP_EXT_NSAPI,        CONDITIONAL },
2122                 { GTP_EXT_CHRG_CHAR,    OPTIONAL },
2123                 { GTP_EXT_TRACE_REF,    OPTIONAL },
2124                 { GTP_EXT_TRACE_TYPE,   OPTIONAL },
2125                 { GTP_EXT_USER_ADDR,    CONDITIONAL },
2126                 { GTP_EXT_APN,          CONDITIONAL },
2127                 { GTP_EXT_PROTO_CONF,   CONDITIONAL },
2128                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2129                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2130                 { GTP_EXT_MSISDN,       CONDITIONAL },
2131                 { GTP_EXT_QOS_UMTS,     MANDATORY },
2132                 { GTP_EXT_TFT,          CONDITIONAL },
2133                 { GTP_EXT_TRIGGER_ID,   OPTIONAL },
2134                 { GTP_EXT_OMC_ID,       OPTIONAL },
2135                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2136                 { 0,                    0 }
2137         }
2138 },
2139 {
2140         GTP_MSG_CREATE_PDP_RESP, {
2141                 { GTP_EXT_CAUSE,        MANDATORY },
2142                 { GTP_EXT_REORDER,      CONDITIONAL },
2143                 { GTP_EXT_RECOVER,      OPTIONAL },
2144                 { GTP_EXT_TEID,         CONDITIONAL },
2145                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2146                 { GTP_EXT_CHRG_ID,      CONDITIONAL },
2147                 { GTP_EXT_USER_ADDR,    CONDITIONAL },
2148                 { GTP_EXT_PROTO_CONF,   OPTIONAL },
2149                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2150                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2151                 { GTP_EXT_QOS_UMTS,     CONDITIONAL },
2152                 { GTP_EXT_CHRG_ADDR,    OPTIONAL },
2153                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2154                 { 0,                    0 }
2155         }
2156 },
2157 {       /* checked, SGSN -> GGSN */
2158         GTP_MSG_UPDATE_PDP_REQ, {
2159                 { GTP_EXT_IMSI,         CONDITIONAL },
2160                 { GTP_EXT_RECOVER,      OPTIONAL },
2161                 { GTP_EXT_TEID,         MANDATORY },
2162                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2163                 { GTP_EXT_NSAPI,        MANDATORY },
2164                 { GTP_EXT_TRACE_REF,    OPTIONAL },
2165                 { GTP_EXT_TRACE_TYPE,   OPTIONAL },
2166                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2167                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2168                 { GTP_EXT_QOS_UMTS,     MANDATORY },
2169                 { GTP_EXT_TFT,          OPTIONAL },
2170                 { GTP_EXT_TRIGGER_ID,   OPTIONAL },
2171                 { GTP_EXT_OMC_ID,       OPTIONAL },
2172                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2173                 { 0,                    0 }
2174         }
2175 },
2176 {       /* checked, GGSN -> SGSN */
2177         GTP_MSG_UPDATE_PDP_RESP, {
2178                 { GTP_EXT_CAUSE,        MANDATORY },
2179                 { GTP_EXT_RECOVER,      OPTIONAL },
2180                 { GTP_EXT_TEID,         CONDITIONAL },
2181                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2182                 { GTP_EXT_CHRG_ID,      CONDITIONAL },
2183                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2184                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2185                 { GTP_EXT_QOS_UMTS,     CONDITIONAL },
2186                 { GTP_EXT_CHRG_ADDR,    OPTIONAL },
2187                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2188                 { 0,                    0 }
2189         }
2190 },
2191 {
2192         GTP_MSG_DELETE_PDP_REQ, {
2193                 { GTP_EXT_TEAR_IND,     CONDITIONAL },
2194                 { GTP_EXT_NSAPI,        MANDATORY },
2195                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2196                 { 0,                    0 }
2197         }
2198 },
2199 {
2200         GTP_MSG_DELETE_PDP_RESP, {
2201                 { GTP_EXT_CAUSE,        MANDATORY },
2202                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2203                 { 0,                    0 }
2204         }
2205 },
2206 {
2207         GTP_MSG_ERR_IND, {
2208                 { GTP_EXT_TEID,         MANDATORY },
2209                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2210                 { 0,                    0 }
2211         }
2212 },
2213 {
2214         GTP_MSG_PDU_NOTIFY_REQ, {
2215                 { GTP_EXT_IMSI,         MANDATORY },
2216                 { GTP_EXT_TEID_CP,      MANDATORY },
2217                 { GTP_EXT_USER_ADDR,    MANDATORY },
2218                 { GTP_EXT_APN,          MANDATORY },
2219                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2220                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2221                 { 0,                    0 }
2222         }
2223 },
2224 {
2225         GTP_MSG_PDU_NOTIFY_RESP, {
2226                 { GTP_EXT_CAUSE,        MANDATORY },
2227                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2228                 { 0,                    0 }
2229         }
2230 },
2231 {
2232         GTP_MSG_PDU_NOTIFY_REJ_REQ, {
2233                 { GTP_EXT_CAUSE,        MANDATORY },
2234                 { GTP_EXT_TEID_CP,      MANDATORY },
2235                 { GTP_EXT_USER_ADDR,    MANDATORY },
2236                 { GTP_EXT_APN,          MANDATORY },
2237                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2238                 { 0,                    0 }
2239         }
2240 },
2241 {
2242         GTP_MSG_PDU_NOTIFY_REJ_RESP, {
2243                 { GTP_EXT_CAUSE,        MANDATORY },
2244                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2245                 { 0,                    0 }
2246         }
2247 },
2248 {
2249         GTP_MSG_SUPP_EXT_HDR, {
2250                 { GTP_EXT_HDR_LIST,     MANDATORY },
2251                 { 0,                    0 }
2252         }
2253 },
2254 {
2255         GTP_MSG_SEND_ROUT_INFO_REQ, {
2256                 { GTP_EXT_IMSI,         MANDATORY },
2257                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2258                 { 0,                    0 }
2259         }
2260 },
2261 {
2262         GTP_MSG_SEND_ROUT_INFO_RESP, {
2263                 { GTP_EXT_CAUSE,        MANDATORY },
2264                 { GTP_EXT_IMSI,         MANDATORY },
2265                 { GTP_EXT_MAP_CAUSE,    OPTIONAL },
2266                 { GTPv1_EXT_MS_REASON,  OPTIONAL },
2267                 { GTP_EXT_GSN_ADDR,     OPTIONAL },
2268                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2269                 { 0,                    0 }
2270         }
2271 },
2272 {
2273         GTP_MSG_FAIL_REP_REQ, {
2274                 { GTP_EXT_IMSI,         MANDATORY },
2275                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2276                 { 0,                    0 }
2277         }
2278 },
2279 {
2280         GTP_MSG_FAIL_REP_RESP, {
2281                 { GTP_EXT_CAUSE,        MANDATORY },
2282                 { GTP_EXT_MAP_CAUSE,    OPTIONAL },
2283                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2284                 { 0,                    0 }
2285         }
2286 },
2287 {
2288         GTP_MSG_MS_PRESENT_REQ, {
2289                 { GTP_EXT_IMSI,         MANDATORY },
2290                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2291                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2292                 { 0,                    0 }
2293         }
2294 },
2295 {
2296         GTP_MSG_MS_PRESENT_RESP, {
2297                 { GTP_EXT_CAUSE,        MANDATORY },
2298                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2299                 { 0,                    0 }
2300         }
2301 },
2302 {
2303         GTP_MSG_IDENT_REQ, {
2304                 { GTP_EXT_RAI,          MANDATORY },
2305                 { GTP_EXT_PTMSI,        MANDATORY },
2306                 { GTP_EXT_PTMSI_SIG,    CONDITIONAL },
2307                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2308                 { 0,                    0 }
2309         }
2310 },
2311 {
2312         GTP_MSG_IDENT_RESP, {
2313                 { GTP_EXT_CAUSE,        MANDATORY },
2314                 { GTP_EXT_IMSI,         CONDITIONAL },
2315                 { GTP_EXT_AUTH_TRI,     CONDITIONAL },
2316                 { GTP_EXT_AUTH_QUI,     CONDITIONAL },
2317                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2318                 { 0,                    0 }
2319         }
2320 },
2321 {
2322         GTP_MSG_SGSN_CNTXT_REQ, {
2323                 { GTP_EXT_IMSI,         CONDITIONAL },
2324                 { GTP_EXT_RAI,          MANDATORY },
2325                 { GTP_EXT_TLLI,         CONDITIONAL },
2326                 { GTP_EXT_PTMSI,        CONDITIONAL },
2327                 { GTP_EXT_PTMSI_SIG,    CONDITIONAL },
2328                 { GTP_EXT_MS_VALID,     OPTIONAL },
2329                 { GTP_EXT_TEID_CP,      MANDATORY },
2330                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2331                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2332                 { 0,                    0 }
2333         }
2334 },
2335 {
2336         GTP_MSG_SGSN_CNTXT_RESP, {
2337                 { GTP_EXT_CAUSE,        MANDATORY },
2338                 { GTP_EXT_IMSI,         CONDITIONAL },
2339                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2340                 { GTP_EXT_RP_SMS,       OPTIONAL },
2341                 { GTP_EXT_RP,           OPTIONAL },
2342                 { GTP_EXT_PKT_FLOW_ID,  OPTIONAL },
2343                 { GTP_EXT_MM_CNTXT,     CONDITIONAL },
2344                 { GTP_EXT_PDP_CNTXT,    CONDITIONAL },
2345                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2346                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2347                 { 0,                    0 }
2348         }
2349 },
2350 {
2351         GTP_MSG_SGSN_CNTXT_ACK, {
2352                 { GTP_EXT_CAUSE,        MANDATORY },
2353                 { GTP_EXT_TEID_II,      CONDITIONAL },
2354                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2355                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2356                 { 0,                    0 }
2357         }
2358 },
2359 {
2360         GTP_MSG_FORW_RELOC_REQ, {
2361                 { GTP_EXT_IMSI,         MANDATORY },
2362                 { GTP_EXT_TEID_CP,      MANDATORY },
2363                 { GTP_EXT_RANAP_CAUSE,  MANDATORY },
2364                 { GTP_EXT_MM_CNTXT,     MANDATORY },
2365                 { GTP_EXT_PDP_CNTXT,    CONDITIONAL },
2366                 { GTP_EXT_GSN_ADDR,     MANDATORY },
2367                 { GTP_EXT_TARGET_ID,    MANDATORY },
2368                 { GTP_EXT_UTRAN_CONT,   MANDATORY },
2369                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2370                 { 0,                    0 }
2371         }
2372 },
2373 {
2374         GTP_MSG_FORW_RELOC_RESP, {
2375                 { GTP_EXT_CAUSE,        MANDATORY },
2376                 { GTP_EXT_TEID_CP,      CONDITIONAL },
2377                 { GTP_EXT_RANAP_CAUSE,  CONDITIONAL },
2378                 { GTP_EXT_GSN_ADDR,     CONDITIONAL },
2379                 { GTP_EXT_UTRAN_CONT,   OPTIONAL },
2380                 { GTP_EXT_RAB_SETUP,    CONDITIONAL },
2381                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2382                 { 0,                    0 }
2383         }
2384 },
2385 {
2386         GTP_MSG_FORW_RELOC_COMP, {
2387                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2388                 { 0,                    0 }
2389         }
2390 },
2391 {
2392         GTP_MSG_RELOC_CANCEL_REQ, {
2393                 { GTP_EXT_IMSI,         MANDATORY },
2394                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2395                 { 0,                    0 }
2396         }
2397 },
2398 {
2399         GTP_MSG_RELOC_CANCEL_RESP, {
2400                 { GTP_EXT_CAUSE,        MANDATORY },
2401                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2402                 { 0,                    0 }
2403         }
2404 },
2405 {
2406         GTP_MSG_FORW_RELOC_ACK, {
2407                 { GTP_EXT_CAUSE,        MANDATORY },
2408                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2409                 { 0,                    0 }
2410         }
2411 },
2412 {
2413         GTP_MSG_FORW_SRNS_CNTXT, {
2414                 { GTP_EXT_RAB_CNTXT,    MANDATORY },
2415                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2416                 { 0,                    0 }
2417         }
2418 },
2419 {
2420         GTP_MSG_FORW_SRNS_CNTXT_ACK, {
2421                 { GTP_EXT_CAUSE,        MANDATORY },
2422                 { GTP_EXT_PRIV_EXT,     OPTIONAL },
2423                 { 0,                    0 }
2424         }
2425 },
2426 {
2427         0, {
2428                 { 0,                    0 }
2429         }
2430 }
2431 };
2432
2433 static int
2434 check_field_presence(guint8 message, guint8 field, int *position) {
2435
2436         guint                   i = 0;
2437         _gtp_mess_items         *mess_items;
2438
2439         switch(gtp_version) {
2440                 case 0:
2441                         mess_items = gprs_mess_items;
2442                         break;
2443                 case 1:
2444                         mess_items = umts_mess_items;
2445                         break;
2446                 default:
2447                         return -2;
2448         }
2449
2450         while (mess_items[i].code) {
2451                 if (mess_items[i].code == message) {
2452
2453                         while (mess_items[i].fields[*position].code) {
2454                                 if (mess_items[i].fields[*position].code == field) {
2455                                         (*position)++;
2456                                         return 0;
2457                                 } else {
2458                                 if (mess_items[i].fields[*position].presence == MANDATORY) {
2459                                         return mess_items[i].fields[(*position)++].code;
2460                                 } else {
2461                                         (*position)++;
2462                                 }}
2463                         }
2464                         return -1;
2465                 }
2466                 i++;
2467         }
2468
2469         return -2;
2470 }
2471
2472 /* Decoders of fields in extension headers, each function returns no of bytes from field */
2473
2474 /* GPRS:        9.60 v7.6.0, chapter
2475  * UMTS:        29.060 v4.0, chapter
2476  */
2477 static int
2478 decode_gtp_cause(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2479
2480         guint8  cause;
2481
2482         cause = tvb_get_guint8(tvb, offset+1);
2483
2484         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_cause : hf_gtpv0_cause, tvb, offset, 2, cause);
2485
2486         return 2;
2487 }
2488
2489 /* GPRS:        9.60 v7.6.0, chapter 7.9.2
2490  * UMTS:        29.060 v4.0, chapter 7.7.2
2491  */
2492 static int
2493 decode_gtp_imsi(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2494
2495         guint8  tid_val[8];
2496         gchar   *tid_str;
2497
2498         tvb_memcpy(tvb, tid_val, offset+1, 8);
2499         tid_val[1] = tid_val[1] & 0x0F;
2500         tid_str = id_to_str(tid_val);
2501
2502         proto_tree_add_string(tree, gtp_version ? hf_gtpv1_imsi : hf_gtpv0_imsi, tvb, offset, 9, tid_str);
2503
2504         return 9;
2505 }
2506
2507 /* GPRS:        9.60 v7.6.0, chapter 7.9.3
2508  * UMTS:        29.060 v4.0, chapter 7.7.3
2509  * TODO: Add details about MCC, MNC, LAC, RAC (show each digit) ?
2510  */
2511 static int
2512 decode_gtp_rai(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2513
2514         proto_tree      *ext_tree_rai;
2515         proto_item      *te;
2516         guint8          byte[3];
2517
2518         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_RAI, gtp_val, "Unknown message"));
2519         ext_tree_rai = proto_item_add_subtree(te, ett_gtp_rai);
2520
2521 /*      tvb_memcpy (tvb, (guint8 *)&byte, offset + 1, 3); */
2522         byte[1] = tvb_get_guint8 (tvb, offset + 1);
2523         byte[2] = tvb_get_guint8 (tvb, offset + 2);
2524         byte[3] = tvb_get_guint8 (tvb, offset + 3);
2525
2526
2527         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 ));
2528         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));
2529         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));
2530         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));
2531
2532         return 7;
2533 }
2534
2535 /* GPRS:        9.60 v7.6.0, chapter 7.9.4, page 39
2536  * UMTS:        29.060 v4.0, chapter 7.7.4, page 47
2537  */
2538 static int
2539 decode_gtp_tlli(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2540
2541         guint32 tlli;
2542
2543         tlli = tvb_get_ntohl(tvb, offset+1);
2544         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tlli : hf_gtpv0_tlli, tvb, offset, 5, tlli);
2545
2546         return 5;
2547 }
2548
2549 /* GPRS:        9.60 v7.6.0, chapter 7.9.5, page 39
2550  * UMTS:        29.060 v4.0, chapter 7.7.5, page 47
2551  */
2552 static int
2553 decode_gtp_ptmsi(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2554
2555         guint32 ptmsi;
2556
2557         ptmsi = tvb_get_ntohl(tvb, offset);
2558         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi : hf_gtpv0_ptmsi, tvb, offset, 5, ptmsi);
2559
2560         return 5;
2561 }
2562
2563 /* adjust - how many bytes before offset should be highlighted
2564  */
2565 static int
2566 decode_qos_gprs(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 adjust) {
2567
2568         guint8          spare1, delay, reliability, peak, spare2,  precedence, spare3, mean;
2569         proto_tree      *ext_tree_qos;
2570         proto_item      *te;
2571
2572         spare1 = tvb_get_guint8(tvb, offset) & 0xC0;
2573         delay = tvb_get_guint8(tvb, offset) & 0x38;
2574         reliability = tvb_get_guint8(tvb, offset) & 0x07;
2575         peak = tvb_get_guint8(tvb, offset+1) & 0xF0;
2576         spare2 = tvb_get_guint8(tvb, offset+1) & 0x08;
2577         precedence = tvb_get_guint8(tvb, offset+1) & 0x07;
2578         spare3 = tvb_get_guint8(tvb, offset+2) & 0xE0;
2579         mean = tvb_get_guint8(tvb, offset+2) & 0x1F;
2580
2581         te = proto_tree_add_text(tree, tvb, offset-adjust, 3+adjust, "%s: delay: %u, reliability: %u, peak: %u, precedence: %u, mean: %u",
2582                                                                         qos_str, delay, reliability, peak, precedence, mean);
2583         ext_tree_qos = proto_item_add_subtree(te, ett_gtp_qos);
2584
2585         if (adjust != 0) {
2586                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare1, tvb, offset, 1, spare1);
2587                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_delay, tvb, offset, 1, delay);
2588                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_reliability, tvb, offset, 1, reliability);
2589                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_peak, tvb, offset+1, 1, peak);
2590                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare2, tvb, offset+1, 1, spare2);
2591                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_precedence, tvb, offset+1, 1, precedence);
2592                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare3, tvb, offset+2, 1, spare3);
2593                 proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_mean, tvb, offset+2, 1, mean);
2594         }
2595
2596         return 3;
2597 }
2598
2599 /* GPRS:        9.60 v7.6.0, chapter 7.9.6, page 39
2600  *              4.08
2601  *              3.60
2602  * UMTS:        not present
2603  * TODO:        check if length is included: ETSI 4.08 vs 9.60
2604  */
2605 static int
2606 decode_gtp_qos_gprs(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2607
2608         return (1+decode_qos_gprs(tvb, offset+1, tree, "Quality of Service", 1));
2609
2610 }
2611
2612 /* GPRS:        9.60 v7.6.0, chapter 7.9.7, page 39
2613  * UMTS:        29.060 v4.0, chapter 7.7.6, page 47
2614  */
2615 static int
2616 decode_gtp_reorder(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2617
2618         guint8  reorder;
2619
2620         reorder = tvb_get_guint8(tvb, offset+1) & 0x01;
2621         proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_reorder : hf_gtpv0_reorder, tvb, offset, 2, reorder);
2622
2623         return 2;
2624 }
2625
2626 /* GPRS:        9.60 v7.6.0, chapter 7.9.8, page 40
2627  *              4.08 v7.1.2, chapter 10.5.3.1+
2628  * UMTS:        29.060 v4.0, chapter 7.7.7
2629  * TODO: Add blurb support by registering items in the protocol registration
2630  */
2631 static int
2632 decode_gtp_auth_tri(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2633
2634         proto_tree      *ext_tree_auth_tri;
2635         proto_item      *te;
2636         guint32         rand[4], sres, kc[2];
2637
2638         tvb_memcpy(tvb, (guint8 *)&rand, offset+1, 16);
2639         sres = tvb_get_ntohl(tvb, offset+17);
2640         tvb_memcpy(tvb, (guint8 *)&kc, offset+21, 16);
2641
2642         te = proto_tree_add_text(tree, tvb, offset, 29, val_to_str(GTP_EXT_AUTH_TRI, gtp_val, "Unknown message"));
2643         ext_tree_auth_tri = proto_item_add_subtree(tree, ett_gtp_auth_tri);
2644
2645         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
2646         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %x", sres);
2647         proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %x%x", kc[0], kc[1]);
2648
2649         return 1+16+4+8;
2650 }
2651
2652 /* GPRS:        9.60 v7.6.0, chapter 7.9.9, page 40
2653  *              9.02 v7.7.0, page 1090
2654  * UMTS:        29.060 v4.0, chapter 7.7.8, page 48
2655  *              29.002 v4.2.1, chapter 17.5, page 268
2656  */
2657 static int
2658 decode_gtp_map_cause(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2659
2660         guint8  map_cause;
2661
2662         map_cause = tvb_get_guint8(tvb, offset+1);
2663         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_map_cause : hf_gtpv0_map_cause, tvb, offset, 2, map_cause);
2664
2665         return 2;
2666 }
2667
2668 /* GPRS:        9.60 v7.6.0, chapter 7.9.10, page 41
2669  * UMTS:        29.060 v4.0, chapter 7.7.9, page 48
2670  */
2671 static int
2672 decode_gtp_ptmsi_sig(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2673
2674         guint32 ptmsi_sig;
2675
2676         ptmsi_sig = tvb_get_ntoh24(tvb, offset+1);
2677         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi_sig : hf_gtpv0_ptmsi_sig, tvb, offset, 4, ptmsi_sig);
2678
2679         return 4;
2680 }
2681
2682 /* GPRS:        9.60 v7.6.0, chapter 7.9.11, page 41
2683  * UMTS:        29.060 v4.0, chapter 7.7.10, page 49
2684  */
2685 static int
2686 decode_gtp_ms_valid(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2687
2688         guint8  ms_valid;
2689
2690         ms_valid = tvb_get_guint8(tvb, offset+1) & 0x01;
2691         proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_ms_valid : hf_gtpv0_ms_valid, tvb, offset, 2, ms_valid);
2692
2693         return 2;
2694 }
2695
2696 /* GPRS:        9.60 v7.6.0, chapter 7.9.12, page 41
2697  * UMTS:        29.060 v4.0, chapter 7.7.11, page 49
2698  */
2699 static int
2700 decode_gtp_recovery(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2701
2702         guint8  recovery;
2703
2704         recovery = tvb_get_guint8(tvb, offset+1);
2705         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_recovery : hf_gtpv0_recovery, tvb, offset, 2, recovery);
2706
2707         return 2;
2708 }
2709
2710 /* GPRS:        9.60 v7.6.0, chapter 7.9.13, page 42
2711  * UMTS:        29.060 v4.0, chapter 7.7.12, page 49
2712  */
2713 static int
2714 decode_gtp_sel_mode(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2715
2716         guint8  sel_mode;
2717
2718         sel_mode = tvb_get_guint8(tvb, offset+1) & 0x03;
2719         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_sel_mode : hf_gtpv0_sel_mode, tvb, offset, 2, sel_mode);
2720
2721         return 2;
2722 }
2723
2724 /* GPRS:        9.60 v7.6.0, chapter 7.9.14, page 42
2725  * UMTS:        29.060 v4.0, chapter 7.7.13, page 50
2726  */
2727 static int
2728 decode_gtp_16(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2729
2730         guint16 ext_flow_label;
2731         guint32 teid_data;
2732
2733         switch (gtp_version) {
2734                 case 0:
2735                         ext_flow_label = tvb_get_ntohs(tvb, offset+1);
2736                         proto_tree_add_uint(tree, hf_gtpv0_ext_flow_label, tvb, offset, 3, ext_flow_label);
2737
2738                         return 3;
2739                 case 1:
2740                         teid_data = tvb_get_ntohl(tvb, offset+1);
2741                         proto_tree_add_uint(tree, hf_gtpv1_teid_data, tvb, offset, 5, teid_data);
2742
2743                         return 5;
2744                 default:
2745                         proto_tree_add_text(tree, tvb, offset, 1, "Flow label/TEID Data I : GTP version not supported");
2746
2747                         return 3;
2748         }
2749 }
2750
2751 /* GPRS:        9.60 v7.6.0, chapter 7.9.15, page 42
2752  * UMTS:        29.060 v4.0, chapter 7.7.14, page 42
2753  */
2754 static int
2755 decode_gtp_17(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2756
2757         guint16         flow_sig;
2758         guint32         teid_cp;
2759
2760         switch (gtp_version) {
2761                 case 0:
2762                         flow_sig = tvb_get_ntohs(tvb, offset+1);
2763                         proto_tree_add_uint(tree, hf_gtpv0_flow_sig, tvb, offset, 3, flow_sig);
2764
2765                         return 3;
2766                 case 1:
2767                         teid_cp = tvb_get_ntohl(tvb, offset+1);
2768                         proto_tree_add_uint(tree, hf_gtpv1_teid_cp, tvb, offset, 5, teid_cp);
2769
2770                         return 5;
2771                 default:
2772                         proto_tree_add_text(tree, tvb, offset, 1, "Flow label signalling/TEID control plane : GTP version not supported");
2773
2774                         return 3;
2775         }
2776 }
2777
2778 /* GPRS:        9.60 v7.6.0, chapter 7.9.16, page 42
2779  * UMTS:        29.060 v4.0, chapter 7.7.15, page 51
2780  */
2781 static int
2782 decode_gtp_18(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2783
2784         guint16         flow_ii;
2785         guint32         teid_ii;
2786         proto_tree      *ext_tree_flow_ii;
2787         proto_item      *te;
2788
2789         switch (gtp_version) {
2790                 case 0:
2791                         te = proto_tree_add_text(tree, tvb, offset, 4, val_to_str(GTP_EXT_FLOW_II, gtp_val, "Unknown message"));
2792                         ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
2793
2794                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
2795
2796                         flow_ii = tvb_get_ntohs(tvb, offset+2);
2797                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_flow_ii, tvb, offset+2, 2, flow_ii);
2798
2799                         return 4;
2800                 case 1:
2801                         te = proto_tree_add_text(tree, tvb, offset, 6, val_to_str(GTP_EXT_TEID_II, gtp_val, "Unknown message"));
2802                         ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
2803
2804                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
2805
2806
2807                         teid_ii = tvb_get_ntohl(tvb, offset+2);
2808                         proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_teid_ii, tvb, offset+2, 4, teid_ii);
2809
2810                         return 6;
2811                 default:
2812                         proto_tree_add_text(tree, tvb, offset, 1, "Flow data II/TEID Data II : GTP Version not supported");
2813
2814                         return 4;
2815         }
2816 }
2817
2818 /* GPRS:        9.60 v7.6.0, chapter 7.9.16A, page 43
2819  * UMTS:        29.060 v4.0, chapter 7.7.16, page 51
2820  * Check if all ms_reason types are included
2821  */
2822 static int
2823 decode_gtp_19(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2824
2825         guint8          field19;
2826
2827         field19 = tvb_get_guint8(tvb, offset+1);
2828
2829         switch (gtp_version) {
2830                 case 0:
2831                         proto_tree_add_uint(tree, hf_gtpv0_ms_reason, tvb, offset, 2, field19);
2832
2833                         break;
2834                 case 1:
2835                         proto_tree_add_boolean(tree, hf_gtpv1_tear_ind, tvb, offset, 2, field19 & 0x01);
2836
2837                         break;
2838                 default:
2839                         proto_tree_add_text(tree, tvb, offset, 1, "Information Element Type = 19 : GTP Version not supported");
2840
2841                         break;
2842         }
2843
2844         return 2;
2845 }
2846
2847 /* GPRS:        not present
2848  * UMTS:        29.060 v4.0, chapter 7.7.17, page 51
2849  */
2850 static int
2851 decode_gtp_nsapi(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2852
2853         guint8          nsapi;
2854
2855         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2856         proto_tree_add_uint(tree, hf_gtpv1_nsapi, tvb, offset, 2, nsapi);
2857
2858         return 2;
2859 }
2860
2861 /* GPRS:        not present
2862  * UMTS:        29.060 v4.0, chapter 7.7.18, page 52
2863  */
2864 static int
2865 decode_gtp_ranap_cause(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2866
2867         guint8          ranap;
2868
2869         ranap = tvb_get_guint8(tvb, offset+1);
2870
2871         if(ranap > 0 && ranap <=64)
2872         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);
2873
2874         if(ranap > 64 && ranap <=80)
2875         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);
2876
2877         if(ranap > 80 && ranap <=96)
2878         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);
2879
2880         if(ranap > 96 && ranap <=112)
2881         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);
2882
2883         if(ranap > 112 && ranap <=128)
2884         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);
2885
2886         if(ranap > 128 && ranap <=255)
2887         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);
2888
2889         return 2;
2890 }
2891
2892 /* GPRS:        not present
2893  * UMTS:        29.060 v4.0, chapter 7.7.19, page 52
2894  */
2895 static int
2896 decode_gtp_rab_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2897
2898         guint8          nsapi, dl_pdcp_seq, ul_pdcp_seq;
2899         guint16         dl_gtpu_seq, ul_gtpu_seq;
2900         proto_tree      *ext_tree_rab_cntxt;
2901         proto_item      *te;
2902
2903         te = proto_tree_add_text(tree, tvb, offset, 8, val_to_str(GTP_EXT_RAB_CNTXT, gtp_val, "Unknown message"));
2904         ext_tree_rab_cntxt = proto_item_add_subtree(te, ett_gtp_rab_cntxt);
2905
2906         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2907         dl_gtpu_seq = tvb_get_ntohs(tvb, offset+2);
2908         ul_gtpu_seq = tvb_get_ntohs(tvb, offset+4);
2909         dl_pdcp_seq = tvb_get_guint8(tvb, offset+6);
2910         ul_pdcp_seq = tvb_get_guint8(tvb, offset+7);
2911
2912         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
2913         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_dn, tvb, offset+2, 2, dl_gtpu_seq);
2914         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_up, tvb, offset+4, 2, ul_gtpu_seq);
2915         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_dn, tvb, offset+6, 1, dl_pdcp_seq);
2916         proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_up, tvb, offset+7, 1, ul_pdcp_seq);
2917
2918         return 8;
2919 }
2920
2921
2922 /* GPRS:        not present
2923  * UMTS:        29.060 v4.0, chapter 7.7.20, page 53
2924  */
2925 static int
2926 decode_gtp_rp_sms(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2927
2928         guint8          rp_sms;
2929
2930         rp_sms = tvb_get_guint8(tvb, offset+1) & 0x07;
2931         proto_tree_add_uint(tree, hf_gtpv1_rp_sms, tvb, offset, 2, rp_sms);
2932
2933         return 2;
2934 }
2935
2936 /* GPRS:        not present
2937  * UMTS:        29.060 v4.0, chapter 7.7.21, page 53
2938  */
2939 static int
2940 decode_gtp_rp(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2941
2942         proto_tree      *ext_tree_rp;
2943         proto_item      *te;
2944         guint8          nsapi, rp, spare;
2945
2946         nsapi = tvb_get_guint8(tvb, offset+1) & 0xF0;
2947         spare = tvb_get_guint8(tvb, offset+1) & 0x08;
2948         rp = tvb_get_guint8(tvb, offset+1) & 0x07;
2949
2950         te = proto_tree_add_uint_format(tree, hf_gtpv1_rp, tvb, offset, 2, rp, "Radio Priority for NSAPI(%u) : %u", nsapi, rp);
2951         ext_tree_rp = proto_item_add_subtree(tree, ett_gtp_rp);
2952
2953         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_nsapi, tvb, offset+1, 1, nsapi);
2954         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_spare, tvb, offset+1, 1, spare);
2955         proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp, tvb, offset+1, 1, rp);
2956
2957         return 2;
2958 }
2959
2960 /* GPRS:        not present
2961  * UMTS:        29.060 v4.0, chapter 7.7.22, page 53
2962  */
2963 static int
2964 decode_gtp_pkt_flow_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2965
2966         proto_tree      *ext_tree_pkt_flow_id;
2967         proto_item      *te;
2968         guint8          nsapi, pkt_flow_id;
2969
2970         nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
2971         pkt_flow_id = tvb_get_guint8(tvb, offset+2);
2972
2973         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);
2974         ext_tree_pkt_flow_id = proto_item_add_subtree(tree, ett_gtp_pkt_flow_id);
2975
2976         proto_tree_add_uint(ext_tree_pkt_flow_id, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
2977         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);
2978
2979         return 3;
2980 }
2981
2982 /* GPRS:        not present
2983  * UMTS:        29.060 v4.0, chapter 7.7.23, page 53
2984  * TODO: Differenciate these uints?
2985  */
2986 static int
2987 decode_gtp_chrg_char(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
2988
2989         guint16         chrg_char;
2990         proto_item      *te;
2991         proto_tree      *ext_tree_chrg_char;
2992
2993         chrg_char = tvb_get_ntohs(tvb, offset+1);
2994
2995         te = proto_tree_add_text(tree, tvb, offset, 3, "%s: %x", val_to_str(GTP_EXT_CHRG_CHAR, gtp_val, "Unknown message"), chrg_char);
2996         ext_tree_chrg_char = proto_item_add_subtree(te, ett_gtp_chrg_char);
2997
2998         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_s, tvb, offset+1, 2, chrg_char);
2999         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_n, tvb, offset+1, 2, chrg_char);
3000         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_p, tvb, offset+1, 2, chrg_char);
3001         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_f, tvb, offset+1, 2, chrg_char);
3002         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_h, tvb, offset+1, 2, chrg_char);
3003         proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_r, tvb, offset+1, 2, chrg_char);
3004
3005         return 3;
3006 }
3007
3008 /* GPRS:        not present
3009  * UMTS:        29.060 v4.0, chapter 7.7.24, page
3010  */
3011 static int
3012 decode_gtp_trace_ref(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3013
3014         guint16         trace_ref;
3015
3016         trace_ref = tvb_get_ntohs(tvb, offset+1);
3017
3018         proto_tree_add_uint(tree, hf_gtpv1_trace_ref, tvb, offset, 3, trace_ref);
3019
3020         return 3;
3021 }
3022
3023 /* GPRS:        not present
3024  * UMTS:        29.060 v4.0, chapter 7.7.25, page
3025  */
3026 static int
3027 decode_gtp_trace_type(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3028
3029         guint16         trace_type;
3030
3031         trace_type = tvb_get_ntohs(tvb, offset+1);
3032
3033         proto_tree_add_uint(tree, hf_gtpv1_trace_type, tvb, offset, 3, trace_type);
3034
3035         return 3;
3036 }
3037
3038 /* GPRS:        9.60 v7.6.0, chapter 7.9.16A
3039  * UMTS:        29.060 v4.0, chapter 7.7.25A, page
3040  */
3041 static int
3042 decode_gtp_ms_reason(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3043
3044         guint8          reason;
3045
3046         reason = tvb_get_guint8(tvb, offset+1);
3047
3048         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ms_reason : hf_gtpv0_ms_reason, tvb, offset, 2, reason);
3049
3050         return 2;
3051 }
3052
3053
3054 /* GPRS:        12.15
3055  * UMTS:        33.015
3056  */
3057 static int
3058 decode_gtp_tr_comm(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3059
3060         guint8  tr_command;
3061
3062         tr_command = tvb_get_ntohl(tvb, offset+1);
3063
3064         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tr_comm : hf_gtpv0_tr_comm, tvb, offset, 2, tr_command);
3065
3066         return 2;
3067 }
3068
3069 /* GPRS:        9.60 v7.6.0, chapter 7.9.17, page 43
3070  * UMTS:        29.060 v4.0, chapter 7.7.26, page 55
3071  */
3072 static int
3073 decode_gtp_chrg_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3074
3075         guint32 chrg_id;
3076
3077         chrg_id = tvb_get_ntohl(tvb, offset+1);
3078         proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_chrg_id : hf_gtpv0_chrg_id, tvb, offset, 5, chrg_id);
3079
3080         return 5;
3081 }
3082
3083 /* GPRS:        9.60 v7.6.0, chapter 7.9.18, page 43
3084  * UMTS:        29.060 v4.0, chapter 7.7.27, page 55
3085  */
3086 static int
3087 decode_gtp_user_addr(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3088
3089         guint16         length;
3090         guint8          pdp_typ, pdp_org;
3091         guint32         addr_ipv4;
3092         struct          e_in6_addr addr_ipv6;
3093         proto_tree      *ext_tree_user;
3094         proto_item      *te;
3095
3096
3097         length = tvb_get_ntohs(tvb, offset+1);
3098         pdp_org = tvb_get_guint8(tvb, offset+3) & 0x0F;
3099         pdp_typ = tvb_get_guint8(tvb, offset+4);
3100
3101         te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s (%s/%s)",
3102             val_to_str(GTP_EXT_USER_ADDR, gtp_val, "Unknown message"),
3103             val_to_str(pdp_org, pdp_org_type, "Unknown PDP Organization"),
3104             val_to_str(pdp_typ, pdp_type, "Unknown PDP Type"));
3105         ext_tree_user = proto_item_add_subtree(te, ett_gtp_user);
3106
3107         proto_tree_add_text(ext_tree_user, tvb, offset+1, 2, "Length : %u", length);
3108         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);
3109         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);
3110
3111         if (length == 2) {
3112                 if (pdp_org == 0 && pdp_typ == 1)
3113                         proto_item_append_text(te, " (Point to Point Protocol)");
3114                 else if (pdp_typ == 2)
3115                         proto_item_append_text(te, " (Octet Stream Protocol)");
3116         } else if (length > 2) {
3117                 switch (pdp_typ) {
3118                         case 0x21:
3119                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+5, sizeof addr_ipv4);
3120                                 proto_tree_add_ipv4(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv4 : hf_gtpv0_user_ipv4, tvb, offset+5, 4, addr_ipv4);
3121                                 proto_item_append_text(te, " : %s", ip_to_str((guint8 *)&addr_ipv4));
3122                                 break;
3123                         case 0x57:
3124                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+5, sizeof addr_ipv6);
3125                                 proto_tree_add_ipv6(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv6 : hf_gtpv0_user_ipv6, tvb, offset+5, 16, (guint8 *)&addr_ipv6);
3126                                 proto_item_append_text(te, " : %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3127                                 break;
3128                 }
3129         } else
3130                 proto_item_append_text(te, " : empty PDP Address");
3131
3132         return 3+length;
3133 }
3134
3135 static int
3136 decode_triplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count) {
3137
3138         proto_tree      *ext_tree_trip;
3139         proto_item      *te_trip;
3140         guint32         rand[4], sres, kc[2];
3141         guint16         i;
3142
3143         for (i=0;i<count;i++) {
3144
3145                 tvb_memcpy(tvb, (guint8 *)&rand, offset+i*28, 16);
3146                 sres = tvb_get_ntohl(tvb, offset+i*28+16);
3147                 tvb_memcpy(tvb, (guint8 *)&kc, offset+i*28+20, 8);
3148
3149                 te_trip = proto_tree_add_text(tree, tvb, offset+i*28, 28, "Triplet no%x", i);
3150                 ext_tree_trip = proto_item_add_subtree(te_trip, ett_gtp_trip);
3151
3152                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
3153                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %x", sres);
3154                 proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %x%x", kc[0], kc[1]);
3155         }
3156
3157         return count*28;
3158 }
3159
3160 /* adjust - how many bytes before quintuplet should be highlighted
3161  */
3162 static int
3163 decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, guint8 adjust) {
3164
3165         proto_tree      *ext_tree_quint;
3166         proto_item      *te_quint;
3167         guint32         rand[4], q_ck[4], q_ik[4];
3168         guint16         q_len, xres_len, auth_len, q_offset, i;
3169
3170         q_offset = 0;
3171
3172         for (i=0;i<count;i++) {
3173
3174                 offset = offset + q_offset;
3175
3176                 q_len = tvb_get_ntohs(tvb, offset);
3177
3178                 tvb_memcpy(tvb, (guint8 *)&rand, offset+2, 16);
3179                 xres_len = tvb_get_ntohs(tvb, offset+18);
3180 /*              xres = tvb_get_ptr(tvb, offset+20, xres_len);*/
3181                 tvb_memcpy(tvb, (guint8 *)&q_ck, offset+20+xres_len, 16);
3182                 tvb_memcpy(tvb, (guint8 *)&q_ik, offset+36+xres_len, 16);
3183                 auth_len = tvb_get_ntohs(tvb, offset+52+xres_len);
3184 /*              auth = tvb_get_ptr(tvb, offset+54+xres_len, auth_len);*/
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: %x%x%x%x", rand[0], rand[1], rand[2], rand[3]);
3191                 proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %x", xres_len);
3192                 proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES");
3193                 proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %x%x%x%x", q_ck[0], q_ck[1], q_ck[2], q_ck[3]);
3194                 proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %x%x%x%x", q_ik[0], q_ik[1], q_ik[2], q_ik[3]);
3195                 proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %x", auth_len);
3196                 proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH");
3197
3198                 q_offset = q_offset + q_len + 2;
3199         }
3200
3201         return q_offset;
3202 }
3203
3204 /* GPRS:        9.60 v7.6.0, chapter 7.9.19 page
3205  * UMTS:        29.060 v4.0, chapter 7.7.28 page 57
3206  * TODO:        - check if for quintuplets first 2 bytes are length, according to AuthQuint
3207  *              - finish displaying last 3 parameters
3208  */
3209 static int
3210 decode_gtp_mm_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3211
3212         guint16         length, quint_len, net_cap, con_len;
3213         guint8          cksn, count, sec_mode, cipher, trans_id, proto_disc, message, drx_split, drx_len, drx_ccch, non_drx_timer;
3214         guint32         kc[4], ik[4];
3215         proto_tree      *ext_tree_mm;
3216         proto_item      *te;
3217
3218         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_MM_CNTXT, gtp_val, "Unknown message"));
3219         ext_tree_mm = proto_item_add_subtree(te, ett_gtp_mm);
3220
3221         length = tvb_get_ntohs(tvb, offset+1);
3222         if (length < 1) return 3;
3223
3224         cksn = tvb_get_guint8(tvb, offset+3) & 0x07;
3225         sec_mode = (tvb_get_guint8(tvb, offset+4) >> 6) & 0x03;
3226         count = (tvb_get_guint8(tvb, offset+4) >> 3) & 0x07;
3227         cipher = tvb_get_guint8(tvb, offset+4) & 0x07;
3228
3229         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 2, "Length: %x", length);
3230         proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Ciphering Key Sequence Number: %u", cksn);
3231         if (gtp_version != 0) {
3232                 proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Security type: %u", sec_mode);
3233         } else {
3234                 sec_mode = 1;
3235         }
3236
3237         proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "No of triplets: %u", count);
3238
3239         switch (sec_mode) {
3240                 case 0:
3241                         if (cipher == 0) {
3242                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3243                         } else {
3244                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3245                         }
3246                         tvb_memcpy(tvb, (guint8 *)&kc, offset+5, 16);
3247                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %x%x%x%x", kc[0], kc[1], kc[2], kc[3]);
3248                         tvb_memcpy(tvb, (guint8 *)&ik, offset+21, 16);
3249                         proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %x%x%x%x", ik[0], ik[1], ik[2], ik[3]);
3250                         quint_len = tvb_get_ntohs(tvb, offset+37);
3251                         proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
3252
3253                         offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
3254
3255
3256                         break;
3257                 case 1:
3258                         if (cipher == 0) {
3259                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3260                         } else {
3261                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3262                         }
3263                         tvb_memcpy(tvb, (guint8 *)&kc, offset+5, 8);
3264                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %x%x", kc[0], kc[1]);
3265
3266                         offset = offset + decode_triplet(tvb, offset+13, ext_tree_mm, count) + 13;
3267
3268                         break;
3269                 case 2:
3270                         tvb_memcpy(tvb, (guint8 *)&kc, offset+5, 16);
3271                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %x%x%x%x", kc[0], kc[1], kc[2], kc[3]);
3272                         tvb_memcpy(tvb, (guint8 *)&ik, offset+21, 16);
3273                         proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %x%x%x%x", ik[0], ik[1], ik[2], ik[3]);
3274                         quint_len = tvb_get_ntohs(tvb, offset+37);
3275                         proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
3276
3277                         offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
3278
3279                         break;
3280                 case 3:
3281                         if (cipher == 0) {
3282                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
3283                         } else {
3284                                 proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
3285                         }
3286                         tvb_memcpy(tvb, (guint8 *)&kc, offset+5, 8);
3287                         proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %x%x", kc[0], kc[1]);
3288                         quint_len = tvb_get_ntohs(tvb, offset+13);
3289                         proto_tree_add_text(ext_tree_mm, tvb, offset+13, 2, "Quintuplets length: %x", quint_len);
3290
3291                         offset = offset + decode_quintuplet(tvb, offset+15, ext_tree_mm, count, 0) + 15;
3292
3293                         break;
3294                 default:
3295                         break;
3296         }
3297
3298
3299         drx_split = tvb_get_guint8(tvb, offset);
3300         drx_len = (tvb_get_guint8(tvb, offset+1) >> 4) & 0x0F;
3301         drx_ccch = (tvb_get_guint8(tvb, offset+1) >> 3) & 0x01;
3302         non_drx_timer = tvb_get_guint8(tvb, offset+1) & 0x07;
3303
3304         net_cap = tvb_get_ntohs(tvb, offset+2);
3305         con_len = tvb_get_ntohs(tvb, offset+4);
3306
3307         proto_tree_add_text(ext_tree_mm, tvb, offset, 1, "DRX: split PG cycle code: %u", drx_split);
3308         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: CN specific DRX cycle length coefficient: %u", drx_len);
3309         proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: split PG cycle on CCCH supported by MS: %s", yesno[drx_ccch]);
3310         if (non_drx_timer == 0) {
3311                 proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: no non-DRX mode after transfer state");
3312         } else {
3313                 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);
3314         }
3315
3316         proto_tree_add_text(ext_tree_mm, tvb, offset+2, 2, "MS network capability: %u", net_cap);
3317         proto_tree_add_text(ext_tree_mm, tvb, offset+4, 2, "Container length: %u", con_len);
3318
3319         if (con_len > 0) {
3320                 trans_id = (tvb_get_guint8(tvb, offset+6) >> 4) & 0x0F;
3321                 proto_disc = tvb_get_guint8(tvb, offset+6) & 0x0F;
3322                 message = tvb_get_guint8(tvb, offset+7);
3323         }
3324
3325         return 3+length;
3326 }
3327
3328  /* WARNING : actually length is coded on 2 octets for QoS profile but on 1 octet for PDP Context!
3329   * so type means length of length :-)
3330  */
3331 static int
3332 decode_qos_umts(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 type) {
3333
3334         guint8          length;
3335         guint8          al_ret_priority;
3336         guint8          delay, reliability, peak, precedence, mean, spare1, spare2, spare3;
3337         guint8          traf_class, del_order, del_err_sdu;
3338         guint8          max_sdu_size, max_ul, max_dl;
3339         guint8          res_ber, sdu_err_ratio;
3340         guint8          trans_delay, traf_handl_prio;
3341         guint8          guar_ul, guar_dl;
3342         proto_tree      *ext_tree_qos;
3343         proto_item      *te;
3344         int             mss, mu, md, gu, gd;
3345
3346         switch (type) {
3347                 case 1:
3348                         length = tvb_get_guint8 (tvb, offset);
3349                         te = proto_tree_add_text (tree, tvb, offset, length + 1, "%s", qos_str);
3350                         ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
3351                         proto_tree_add_text (ext_tree_qos, tvb, offset, 1, "Length: %u", length);
3352                         break;
3353                 case 2:
3354                         length = tvb_get_ntohs (tvb, offset + 1);
3355                         te = proto_tree_add_text(tree, tvb, offset, length + 3, "%s", qos_str);
3356                         ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
3357                         proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Length: %u", length);
3358                         type++;         /* +1 because of first 0x86 byte for UMTS QoS */
3359                         break;
3360                 default:
3361                         /* XXX - what should we do with the length here? */
3362                         length = 0;
3363                         ext_tree_qos = NULL;
3364                         break;
3365         }
3366
3367         offset += type;
3368
3369         al_ret_priority = tvb_get_guint8 (tvb, offset);
3370
3371         spare1 = tvb_get_guint8(tvb, offset+1) & 0xC0;
3372         delay = tvb_get_guint8(tvb, offset+1) & 0x38;
3373         reliability = tvb_get_guint8(tvb, offset+1) & 0x07;
3374         peak = tvb_get_guint8(tvb, offset+2) & 0xF0;
3375         spare2 = tvb_get_guint8(tvb, offset+2) & 0x08;
3376         precedence = tvb_get_guint8(tvb, offset+2) & 0x07;
3377         spare3 = tvb_get_guint8(tvb, offset+3) & 0xE0;
3378         mean = tvb_get_guint8(tvb, offset+3) & 0x1F;
3379
3380         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_al_ret_priority, tvb, offset, 1, al_ret_priority);
3381         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare1, tvb, offset+1, 1, spare1);
3382         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_delay, tvb, offset+1, 1, delay);
3383         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_reliability, tvb, offset+1, 1, reliability);
3384         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_peak, tvb, offset+2, 1, peak);
3385         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare2, tvb, offset+2, 1, spare2);
3386         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_precedence, tvb, offset+2, 1, precedence);
3387         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare3, tvb, offset+3, 1, spare3);
3388         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_mean, tvb, offset+3, 1, mean);
3389
3390         if (length > 4) {
3391
3392                 traf_class = tvb_get_guint8(tvb, offset+4) & 0xE0;
3393                 del_order = tvb_get_guint8(tvb, offset+4) & 0x18;
3394                 del_err_sdu = tvb_get_guint8(tvb, offset+4) & 0x07;
3395                 max_sdu_size = tvb_get_guint8(tvb, offset+5);
3396                 max_dl = tvb_get_guint8(tvb, offset+6);
3397                 max_ul = tvb_get_guint8(tvb, offset+7);
3398                 res_ber = tvb_get_guint8(tvb, offset+8) & 0xF0;
3399                 sdu_err_ratio = tvb_get_guint8(tvb, offset+8) & 0x0F;
3400                 trans_delay = tvb_get_guint8(tvb, offset+9) & 0xFC;
3401                 traf_handl_prio = tvb_get_guint8(tvb, offset+9) & 0x03;
3402                 guar_ul = tvb_get_guint8(tvb, offset+10);
3403                 guar_dl = tvb_get_guint8(tvb, offset+11);
3404
3405                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_class, tvb, offset+4, 1, traf_class);
3406                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_order, tvb, offset+4, 1, del_order);
3407                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_err_sdu, tvb, offset+4, 1, del_err_sdu);
3408                 if (max_sdu_size == 0 || max_sdu_size > 150)
3409                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+5, 1, max_sdu_size);
3410                 if (max_sdu_size > 0 && max_sdu_size <= 150) {
3411                         mss = max_sdu_size*10;
3412                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+5, 1, mss, "Maximum SDU size : %u octets", mss);
3413                 }
3414
3415                 if(max_ul == 0 || max_ul == 255)
3416                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+6, 1, max_ul);
3417                 if(max_ul > 0 && max_ul <= 63)
3418                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+6, 1, max_ul, "Maximum bit rate for uplink : %u kbps", max_ul);
3419                 if(max_ul > 63 && max_ul <=127) {
3420                         mu = 64 + ( max_ul - 64 ) * 8;
3421                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+6, 1, mu, "Maximum bit rate for uplink : %u kbps", mu);
3422                 }
3423
3424                 if(max_ul > 127 && max_ul <=254) {
3425                         mu = 576 + ( max_ul - 128 ) * 64;
3426                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+6, 1, mu, "Maximum bit rate for uplink : %u kbps", mu);
3427                 }
3428
3429                 if(max_dl == 0 || max_dl == 255)
3430                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+7, 1, max_dl);
3431                 if(max_dl > 0 && max_dl <= 63)
3432                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+7, 1, max_dl, "Maximum bit rate for downlink : %u kbps", max_dl);
3433                 if(max_dl > 63 && max_dl <=127) {
3434                         md = 64 + ( max_dl - 64 ) * 8;
3435                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+7, 1, md, "Maximum bit rate for downlink : %u kbps", md);
3436                 }
3437                 if(max_dl > 127 && max_dl <=254) {
3438                         md = 576 + ( max_dl - 128 ) * 64;
3439                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+7, 1, md, "Maximum bit rate for downlink : %u kbps", md);
3440                 }
3441
3442                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_res_ber, tvb, offset+8, 1, res_ber);
3443                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_sdu_err_ratio, tvb, offset+8, 1, sdu_err_ratio);
3444                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_trans_delay, tvb, offset+9, 1, trans_delay);
3445                 proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_handl_prio, tvb, offset+9, 1, traf_handl_prio);
3446
3447                 if(guar_ul == 0 || guar_ul == 255)
3448                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+10, 1, guar_ul);
3449                 if(guar_ul > 0 && guar_ul <= 63)
3450                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+10, 1, guar_ul, "Guaranteed bit rate for uplink : %u kbps", guar_ul);
3451                 if(guar_ul > 63 && guar_ul <=127) {
3452                         gu = 64 + ( guar_ul - 64 ) * 8;
3453                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+10, 1, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
3454                 }
3455                 if(guar_ul > 127 && guar_ul <=254) {
3456                         gu = 576 + ( guar_ul - 128 ) * 64;
3457                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+10, 1, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
3458                 }
3459
3460                 if(guar_dl == 0 || guar_dl == 255)
3461                         proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+11, 1, guar_dl);
3462                 if(guar_dl > 0 && guar_dl <= 63)
3463                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+11, 1, guar_dl, "Guaranteed bit rate for downlink : %u kbps", guar_dl);
3464                 if(guar_dl > 63 && guar_dl <=127) {
3465                         gd = 64 + ( guar_dl - 64 ) * 8;
3466                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+11, 1, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
3467                 }
3468                 if(guar_dl > 127 && guar_dl <=254) {
3469                         gd = 576 + ( guar_dl - 128 ) * 64;
3470                         proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+11, 1, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
3471                 }
3472
3473         }
3474
3475         return length + type;
3476
3477 }
3478
3479 static void
3480 decode_apn(tvbuff_t *tvb, int offset, guint16 length, proto_tree *tree) {
3481
3482         gchar   *apn = NULL;
3483         guint8  name_len, tmp;
3484
3485         if (length > 0) {
3486                 apn = g_malloc (length + 1);
3487                 name_len = tvb_get_guint8 (tvb, offset);
3488
3489                 if (name_len < 0x20) {
3490                         tvb_memcpy (tvb, apn, offset + 1, length);
3491                         for (;;) {
3492                                 if (name_len >= length - 1) break;
3493                                 tmp = name_len;
3494                                 name_len = name_len + apn[tmp] + 1;
3495                                 apn[tmp] = '.';
3496                         }
3497                 } else {
3498                         tvb_memcpy (tvb, apn, offset, length);
3499                 }
3500
3501                 apn[length-1] = '\0';
3502                 proto_tree_add_string(tree, gtp_version ? hf_gtpv1_apn : hf_gtpv0_apn, tvb, offset, length, apn);
3503                 g_free(apn);
3504         }
3505 }
3506
3507 /* GPRS:        9.60 v7.6.0, chapter 7.9.20
3508  * UMTS:        29.060 v4.0, chapter 7.7.29
3509  * TODO:        unify addr functions
3510  */
3511 static int
3512 decode_gtp_pdp_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3513
3514         guint8          ggsn_addr_len, apn_len, trans_id, vaa, order, nsapi, sapi, pdu_send_no, pdu_rec_no, pdp_cntxt_id,
3515                         pdp_type_org, pdp_type_num, pdp_addr_len;
3516         guint16         length, sn_down, sn_up, up_flow;
3517         guint32         addr_ipv4, up_teid, up_teid_cp;
3518         struct  e_in6_addr addr_ipv6;
3519         proto_tree      *ext_tree_pdp;
3520         proto_item      *te;
3521
3522         length = tvb_get_ntohs(tvb, offset+1);
3523
3524         te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_PDP_CNTXT, gtp_val, "Unknown message"));
3525         ext_tree_pdp = proto_item_add_subtree(te, ett_gtp_pdp);
3526
3527         vaa = (tvb_get_guint8(tvb, offset+3) >> 6) & 0x01;
3528         order = (tvb_get_guint8(tvb, offset+3) >> 4) & 0x01;
3529         nsapi =  tvb_get_guint8(tvb, offset+3) & 0x0F;
3530         sapi = tvb_get_guint8(tvb, offset+4) & 0x0F;
3531
3532         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "VPLMN address allowed: %s", yesno[vaa]);
3533         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "Reordering required: %s", yesno[order]);
3534         proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "NSAPI: %u", nsapi);
3535         proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "SAPI: %u", sapi);
3536
3537         switch (gtp_version) {
3538                 case 0:
3539                         decode_qos_gprs(tvb, offset+5, ext_tree_pdp, "QoS subscribed", 0);
3540                         decode_qos_gprs(tvb, offset+8, ext_tree_pdp, "QoS requested", 0);
3541                         decode_qos_gprs(tvb, offset+11, ext_tree_pdp, "QoS negotiated", 0);
3542                         offset = offset + 14;
3543                         break;
3544                 case 1:
3545                         offset = offset + 5;
3546                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS subscribed", 1);
3547                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS requested", 1);
3548                         offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS negotiated", 1);
3549                         break;
3550                 default:
3551                         break;
3552         }
3553
3554         sn_down = tvb_get_ntohs(tvb, offset);
3555         sn_up = tvb_get_ntohs(tvb, offset+2);
3556         pdu_send_no = tvb_get_guint8(tvb, offset+4);
3557         pdu_rec_no = tvb_get_guint8(tvb, offset+5);
3558
3559         proto_tree_add_text(ext_tree_pdp, tvb, offset, 2, "Sequence number down: %u", sn_down);
3560         proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 2, "Sequence number up: %u", sn_up);
3561         proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "Send N-PDU number: %u", pdu_send_no);
3562         proto_tree_add_text(ext_tree_pdp, tvb, offset+5, 1, "Receive N-PDU number: %u", pdu_rec_no);
3563
3564         switch (gtp_version) {
3565                 case 0:
3566                         up_flow = tvb_get_ntohs(tvb, offset+6);
3567                         proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 2, "Uplink flow label signalling: %u", up_flow);
3568                         offset = offset + 8;
3569                         break;
3570                 case 1:
3571                         up_teid = tvb_get_ntohl(tvb, offset+6);
3572                         up_teid_cp = tvb_get_ntohl(tvb, offset+10);
3573                         pdp_cntxt_id = tvb_get_guint8(tvb, offset+14);
3574                         proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 4, "Uplink TEID: %x", up_teid);
3575                         proto_tree_add_text(ext_tree_pdp, tvb, offset+10, 4, "Uplink TEID control plane: %x", up_teid_cp);
3576                         proto_tree_add_text(ext_tree_pdp, tvb, offset+14, 1, "PDP context identifier: %u", pdp_cntxt_id);
3577                         offset = offset + 15;
3578                         break;
3579                 default:
3580                         break;
3581         }
3582
3583         pdp_type_org = tvb_get_guint8(tvb, offset) & 0x0F;
3584         pdp_type_num = tvb_get_guint8(tvb, offset+1);
3585         pdp_addr_len = tvb_get_guint8(tvb, offset+2);
3586
3587         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "PDP organization: %s", val_to_str(pdp_type_org, pdp_type, "Unknown PDP org"));
3588         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"));
3589         proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 1, "PDP address length: %u", pdp_addr_len);
3590
3591         if (pdp_addr_len > 0) {
3592                 switch (pdp_type_num) {
3593                         case 0x21:
3594                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
3595                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 4, "PDP address: %s", ip_to_str((guint8 *)&addr_ipv4));
3596                                 break;
3597                         case 0x57:
3598                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
3599                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 16, "PDP address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3600                                 break;
3601                         default:
3602                                 break;
3603                 }
3604         }
3605
3606         offset = offset + 3 + pdp_addr_len;
3607
3608         ggsn_addr_len = tvb_get_guint8(tvb, offset);
3609         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN address length: %u", ggsn_addr_len);
3610
3611         switch (ggsn_addr_len) {
3612                 case 4:
3613                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
3614                         proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN address: %s", ip_to_str((guint8 *)&addr_ipv4));
3615                         break;
3616                 case 16:
3617                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
3618                         proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3619                         break;
3620                 default:
3621                         break;
3622         }
3623
3624         offset = offset + 1 + ggsn_addr_len;
3625
3626         if (gtp_version == 1) {
3627
3628                 ggsn_addr_len = tvb_get_guint8(tvb, offset);
3629                 proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN 2 address length: %u", ggsn_addr_len);
3630
3631                 switch (ggsn_addr_len) {
3632                         case 4:
3633                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
3634                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN 2 address: %s", ip_to_str((guint8 *)&addr_ipv4));
3635                                 break;
3636                         case 16:
3637                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
3638                                 proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN 2 address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3639                                 break;
3640                         default:
3641                                 break;
3642                 }
3643                 offset = offset + 1 + ggsn_addr_len;
3644
3645         }
3646
3647         apn_len = tvb_get_guint8(tvb, offset);
3648         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "APN length: %u", apn_len);
3649         decode_apn(tvb, offset+1, apn_len, ext_tree_pdp);
3650
3651         offset = offset + 1 + apn_len;
3652
3653         trans_id = tvb_get_guint8(tvb, offset);
3654         proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "Transaction identifier: %u", trans_id);
3655
3656         return 3+length;
3657 }
3658
3659 /* GPRS:        9.60, v7.6.0, chapter 7.9.21
3660  * UMTS:        29.060, v4.0, chapter 7.7.30
3661  */
3662 static int
3663 decode_gtp_apn(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3664
3665         guint16         length;
3666         proto_tree      *ext_tree_apn;
3667         proto_item      *te;
3668
3669         length = tvb_get_ntohs(tvb, offset+1);
3670
3671         te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_APN, gtp_val, "Unknown field"));
3672         ext_tree_apn = proto_item_add_subtree(te, ett_gtp_apn);
3673
3674         proto_tree_add_text(ext_tree_apn, tvb, offset+1, 2, "APN length : %u", length);
3675         decode_apn(tvb, offset+3, length, ext_tree_apn);
3676
3677         return 3+length;
3678 }
3679
3680 /* GPRS:        9.60 v7.6.0, chapter 7.9.22
3681  *              4.08 v. 7.1.2, chapter 10.5.6.3 (p.580)
3682  * UMTS:        29.060 v4.0, chapter 7.7.31
3683  *              24.008, v4.2, chapter 10.5.6.3
3684  * TODO:        check if length is 8 or 16 bits
3685  *              - proto_conf in 3G */
3686 int
3687 decode_gtp_proto_conf(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3688
3689         guint16         length, proto_offset;
3690         guint8          *ptr, conf, proto_len, tmp, msg;
3691         tvbuff_t        *next_tvb;
3692         proto_tree      *ext_tree_proto;
3693         proto_item      *te;
3694
3695         length = tvb_get_ntohs(tvb, offset + 1);
3696
3697         te = proto_tree_add_text(tree, tvb, offset, length + 3, val_to_str(GTP_EXT_PROTO_CONF, gtp_val, "Unknown message"));
3698         ext_tree_proto = proto_item_add_subtree(te, ett_gtp_proto);
3699
3700         proto_tree_add_text(ext_tree_proto, tvb, offset + 1, 2, "Length: %u", length);
3701
3702         if (length < 1) return 3;
3703
3704         conf = tvb_get_guint8(tvb, offset + 3) & 0x07;
3705         proto_offset = 1;       /* ... 1st byte is conf */
3706
3707         for (;;) {
3708                 if (proto_offset >= length) break;
3709                 proto_len = tvb_get_guint8(tvb, offset + 6);
3710                 proto_offset += proto_len + 3;
3711
3712                 if ((proto_len > 0) && ppp_reorder) {
3713
3714                         /* this part changes layout of GTP payload:
3715                          * it swaps "length field" with "protocol header"  */
3716
3717                         ptr = (guint8 *)tvb_get_ptr(tvb, offset + 4, 3);
3718
3719                         tmp = ptr[2];
3720                         ptr[2] = ptr[1];
3721                         ptr[1] = ptr[0];
3722                         ptr[0] = tmp;
3723
3724                         next_tvb = tvb_new_subset(tvb, offset + 5, proto_len + 2, proto_len + 2);
3725                         call_dissector(ppp_handle, next_tvb, pinfo, ext_tree_proto);
3726
3727                         if (check_col(pinfo->cinfo, COL_PROTOCOL))
3728                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
3729
3730                         if (check_col(pinfo->cinfo, COL_INFO)) {
3731
3732                                 msg = tvb_get_guint8(tvb, 1);
3733
3734                                 col_set_str(pinfo->cinfo, COL_INFO, val_to_str(msg, message_type, "Unknown"));
3735                         }
3736                 }
3737         }
3738
3739         return 3 + length;
3740 }
3741
3742 /* GPRS:        9.60 v7.6.0, chapter 7.9.23
3743  * UMTS:        29.060 v4.0, chapter 7.7.32
3744  */
3745 static int
3746 decode_gtp_gsn_addr(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3747
3748         guint8          addr_type, addr_len;
3749         guint16         length;
3750         guint32         addr_ipv4;
3751         struct  e_in6_addr addr_ipv6;
3752         proto_tree      *ext_tree_gsn_addr;
3753         proto_item      *te;
3754
3755         length = tvb_get_ntohs(tvb, offset+1);
3756
3757         te = proto_tree_add_text(tree, tvb, offset, 3+length, "GSN address : ");
3758         ext_tree_gsn_addr = proto_item_add_subtree(te, ett_gtp_gsn_addr);
3759
3760         switch (length) {
3761                 case 4:
3762                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
3763                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
3764                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
3765                         proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+3, 4, addr_ipv4);
3766                         break;
3767                 case 5:
3768                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
3769                         addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
3770                         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);
3771                         addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
3772                         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);
3773                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+4, sizeof addr_ipv4);
3774                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
3775                         proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+4, 4, addr_ipv4);
3776                         break;
3777                 case 16:
3778                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
3779                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
3780                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3781                         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);
3782                         break;
3783                 case 17:
3784                         proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
3785                         addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
3786                         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);
3787                         addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
3788                         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);
3789                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+4, sizeof addr_ipv6);
3790                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3791                         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);
3792                         break;
3793                 default:
3794                         proto_item_append_text(te, "unknown type or wrong length");
3795                         break;
3796         }
3797
3798         return 3+length;
3799 }
3800
3801 /* GPRS:        9.60 v7.6.0, chapter 7.9.24
3802  * UMTS:        29.060 v4.0, chapter 7.7.33
3803  */
3804 static int
3805 decode_gtp_msisdn(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3806
3807         const guint8    *msisdn_val;
3808         gchar           *msisdn_str;
3809         guint16         length;
3810
3811         length = tvb_get_ntohs(tvb, offset+1);
3812
3813         if (length < 1) return 3;
3814
3815         msisdn_val = tvb_get_ptr(tvb, offset+3, length);
3816         msisdn_str = msisdn_to_str(msisdn_val, length);
3817
3818         proto_tree_add_string(tree, gtp_version ? hf_gtpv1_msisdn : hf_gtpv0_msisdn, tvb, offset, 3+length, msisdn_str);
3819
3820         return 3+length;
3821 }
3822
3823 /* GPRS:        not present
3824  * UMTS:        29.060 v4.0, chapter 7.7.34
3825  *              24.008 v4.2, chapter 10.5.6.5
3826  */
3827 static int
3828 decode_gtp_qos_umts(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3829
3830         return decode_qos_umts(tvb, offset, tree, "Quality of Service", 2);
3831 }
3832
3833 /* GPRS:        not present
3834  * UMTS:        29.060 v4.0, chapter 7.7.35
3835  */
3836 static int
3837 decode_gtp_auth_qui(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3838
3839         return (1 + decode_quintuplet(tvb, offset+1, tree, 1, 1));
3840
3841 }
3842
3843 /* GPRS:        not present
3844  * UMTS:        29.060 v4.0, chapter 7.7.36
3845  *              24.008 v4.2, chapter 10.5.6.12
3846  */
3847 static int
3848 decode_gtp_tft(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3849
3850         guint16         length, port1, port2, tos;
3851         guint8          tft_code, no_packet_filters, i, pf_id, pf_eval, pf_len, pf_content_id, pf_offset, proto;
3852         guint32         addr_ipv4, ipsec_id, label;
3853         struct  e_in6_addr addr_ipv6;
3854         proto_tree      *ext_tree_tft, *ext_tree_tft_pf;
3855         proto_item      *te, *tee;
3856
3857         length = tvb_get_ntohs(tvb, offset+1);
3858
3859         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Traffic flow template");
3860         ext_tree_tft = proto_item_add_subtree(te, ett_gtp_tft);
3861
3862         tft_code = (tvb_get_guint8(tvb, offset+3) >> 5) & 0x07;
3863         no_packet_filters = tvb_get_guint8(tvb, offset+3) & 0x0F;
3864
3865         proto_tree_add_text(ext_tree_tft, tvb, offset+1, 2, "TFT length: %u", length);
3866         proto_tree_add_text(ext_tree_tft, tvb, offset+3, 1, "TFT operation code: %u", tft_code);
3867         proto_tree_add_text(ext_tree_tft, tvb, offset+3, 1, "Number of packet filters: %u", no_packet_filters);
3868
3869         offset = offset + 4;
3870
3871         for (i=0;i<no_packet_filters;i++) {
3872
3873                 pf_id = tvb_get_guint8(tvb, offset);
3874
3875                 tee = proto_tree_add_text(ext_tree_tft, tvb, offset, 1, "Packet filter id: %u", pf_id);
3876                 ext_tree_tft_pf = proto_item_add_subtree(tee, ett_gtp_tft_pf);
3877
3878                 if (tft_code != 2) {
3879
3880                         pf_eval = tvb_get_guint8(tvb, offset+1);
3881                         pf_len = tvb_get_guint8(tvb, offset+2);
3882
3883                         proto_tree_add_text(ext_tree_tft_pf, tvb, offset+1, 1, "Evaluation precedence: %u", pf_eval);
3884                         proto_tree_add_text(ext_tree_tft_pf, tvb, offset+2, 1, "Contents length: %u", pf_len);
3885
3886                         offset = offset + 3;
3887                         pf_offset = 0;
3888
3889                         while (pf_offset < pf_len) {
3890
3891                                 pf_content_id = tvb_get_guint8(tvb, offset + pf_offset);
3892
3893                                 switch (pf_content_id) {
3894                                         /* address IPv4 and mask = 8 bytes*/
3895                                         case 0x10:
3896                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset, 1, "Address IPv4 and mask (0x10)");
3897                                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset + pf_offset + 1, sizeof addr_ipv4);
3898                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 4, "\tAddress: %s", ip_to_str((guint8 *)&addr_ipv4));
3899                                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset + pf_offset + 5, sizeof addr_ipv4);
3900                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 5, 4, "\tNetmask: %s", ip_to_str((guint8 *)&addr_ipv4));
3901                                                 pf_offset = pf_offset + 9;
3902                                                 break;
3903                                         /* address IPv6 and mask = 32 bytes*/
3904                                         case 0x20:
3905                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Address IPv6 and mask (0x20)");
3906                                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+pf_offset+1, sizeof addr_ipv6);
3907                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+offset+1, 16, "\tAddress: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3908                                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+pf_offset+17, sizeof addr_ipv6);
3909                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+offset+17, 16, "\tNetmask: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
3910                                                 pf_offset = pf_offset + 33;
3911                                                 break;
3912                                         /* protocol identifier/next header type = 1 byte*/
3913                                         case 0x30:
3914                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset, 1, "IPv4 protocol identifier/IPv6 next header (0x30)");
3915                                                 proto = tvb_get_guint8(tvb, offset + pf_offset + 1);
3916                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 1, "\t%u", proto);
3917                                                 pf_offset = pf_offset + 2;
3918                                                 break;
3919                                         /* single destination port type = 2 bytes */
3920                                         case 0x40:
3921                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset, 1, "Destination port (0x40)");
3922                                                 port1 = tvb_get_ntohs(tvb, offset + pf_offset + 1);
3923                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 2, "\t%u", port1);
3924                                                 pf_offset = pf_offset + 3;
3925                                                 break;
3926                                         /* destination port range type = 4 bytes */
3927                                         case 0x41:
3928                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Destination port range (0x41)");
3929                                                 port1 = tvb_get_ntohs(tvb, offset + pf_offset + 1);
3930                                                 port2 = tvb_get_ntohs(tvb, offset + pf_offset + 3);
3931                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 4, "\t%u-%u", port1, port2);
3932                                                 pf_offset = pf_offset + 5;
3933                                                 break;
3934                                         /* single source port type = 2 bytes */
3935                                         case 0x50:
3936                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Source port (0x50)");
3937                                                 port1 = tvb_get_ntohs(tvb, offset + pf_offset + 1);
3938                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 2, "\t%u", port1);
3939                                                 pf_offset = pf_offset + 3;
3940                                                 break;
3941                                         /* source port range type = 4 bytes */
3942                                         case 0x51:
3943                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Source port range (0x51)");
3944                                                 port1 = tvb_get_ntohs(tvb, offset + pf_offset + 1);
3945                                                 port2 = tvb_get_ntohs(tvb, offset + pf_offset + 3);
3946                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 4, "\t%u-%u", port1, port2);
3947                                                 pf_offset = pf_offset + 5;
3948                                                 break;
3949                                         /* security parameter index type = 4 bytes */
3950                                         case 0x60:
3951                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Security parameter index (0x60)");
3952                                                 ipsec_id = tvb_get_ntohl(tvb, offset + pf_offset + 1);
3953                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 4, "\t%x", ipsec_id);
3954                                                 pf_offset = pf_offset + 5;
3955                                                 break;
3956                                         /* type of service/traffic class type = 2 bytes */
3957                                         case 0x70:
3958                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Type of Service/Traffic Class (0x70)");
3959                                                 tos = tvb_get_ntohs(tvb, offset + pf_offset + 1);
3960                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 2, "\t%u", tos);
3961                                                 pf_offset = pf_offset + 3;
3962                                                 break;
3963                                         /* flow label type = 3 bytes */
3964                                         case 0x80:
3965                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset+pf_offset, 1, "Flow label (0x80)");
3966                                                 label = tvb_get_ntoh24(tvb, offset + pf_offset + 1) & 0x0FFFFF;;
3967                                                 proto_tree_add_text(ext_tree_tft_pf, tvb, offset + pf_offset + 1, 3, "\t%x", label);
3968                                                 pf_offset = pf_offset + 4;
3969                                                 break;
3970
3971                                         default:
3972                                                 break;
3973                                 }
3974                         }
3975                 }
3976         }
3977
3978         return 3 + length;
3979 }
3980
3981 /* GPRS:        not present
3982  * UMTS:        29.060 v4.0, chapter 7.7.37
3983  *              25.413 v3.4, chapter ???
3984  */
3985 static int
3986 decode_gtp_target_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
3987
3988         guint16         length;
3989
3990         length = tvb_get_ntohs(tvb, offset + 1);
3991
3992         proto_tree_add_text(tree, tvb, offset, 3 + length, "Targer Identification");
3993
3994         return 3 + length;
3995 }
3996
3997
3998 /* GPRS:        not present
3999  * UMTS:        29.060 v4.0, chapter 7.7.38
4000  */
4001 static int
4002 decode_gtp_utran_cont(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4003
4004         guint16         length;
4005
4006         length = tvb_get_ntohs(tvb, offset + 1);
4007
4008         proto_tree_add_text(tree, tvb, offset, 3 + length, "UTRAN transparent field");
4009
4010         return 3 + length;
4011
4012 }
4013
4014
4015 /* GPRS:        not present
4016  * UMTS:        29.060 v4.0, chapter 7.7.39
4017  */
4018 static int
4019 decode_gtp_rab_setup(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4020
4021         guint32         teid, addr_ipv4;
4022         guint16         length;
4023         guint8          nsapi;
4024         struct  e_in6_addr addr_ipv6;
4025         proto_tree      *ext_tree_rab_setup;
4026         proto_item      *te;
4027
4028         length = tvb_get_ntohs(tvb, offset + 1);
4029         nsapi = tvb_get_guint8(tvb, offset + 3) & 0x0F;
4030
4031         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Radio Access Bearer Setup Information");
4032         ext_tree_rab_setup = proto_item_add_subtree(te, ett_gtp_rab_setup);
4033
4034         proto_tree_add_text(ext_tree_rab_setup, tvb, offset+1, 2, "RAB setup length : %u", length);
4035         proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_nsapi, tvb, offset+3, 1, nsapi);
4036
4037         if (length > 1) {
4038
4039                 teid = tvb_get_ntohl(tvb, offset + 4);
4040
4041                 proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_teid_data, tvb, offset+4, 4, teid);
4042
4043                 switch (length) {
4044                         case 12:
4045                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+8, sizeof addr_ipv4);
4046                                 proto_tree_add_ipv4(ext_tree_rab_setup, hf_gtpv1_rnc_ipv4, tvb, offset+8, 4, addr_ipv4);
4047                                 break;
4048                         case 24:
4049                                 tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+8, sizeof addr_ipv6);
4050                                 proto_tree_add_ipv6(ext_tree_rab_setup, hf_gtpv1_rnc_ipv6, tvb, offset+8, 16, (guint8 *)&addr_ipv6);
4051                                 break;
4052                         default:
4053                                 break;
4054                 }
4055         }
4056
4057         return 3 + length;
4058 }
4059
4060
4061 /* GPRS:        not present
4062  * UMTS:        29.060 v4.0, chapter 7.7.40
4063  */
4064 static int
4065 decode_gtp_hdr_list(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4066
4067         int             i;
4068         guint8          length, hdr;
4069         proto_tree      *ext_tree_hdr_list;
4070         proto_item      *te;
4071
4072         length = tvb_get_guint8(tvb, offset + 1);
4073
4074         te = proto_tree_add_text(tree, tvb, offset, 2+length, "%s", val_to_str(GTP_EXT_HDR_LIST, gtp_val, "Unknown"));
4075         ext_tree_hdr_list = proto_item_add_subtree(te, ett_gtp_hdr_list);
4076
4077         proto_tree_add_text(ext_tree_hdr_list, tvb, offset+1, 1, "Number of Extension Header Types in list (i.e., length) : %u", length);
4078
4079         for(i=0 ; i<length ; i++) {
4080                 hdr = tvb_get_guint8(tvb, offset+2+i);
4081
4082                 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);
4083         }
4084
4085         return 2 + length;
4086 }
4087
4088 /* GPRS:        not present
4089  * UMTS:        29.060 v4.0, chapter 7.7.41
4090  * TODO:        find TriggerID description
4091  */
4092 static int
4093 decode_gtp_trigger_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4094
4095         guint16         length;
4096
4097         length = tvb_get_ntohs(tvb, offset + 1);
4098
4099         proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_TRIGGER_ID, gtp_val, "Unknown"), length);
4100
4101         return 3 + length;
4102
4103 }
4104
4105 /* GPRS:        not present
4106  * UMTS:        29.060 v4.0, chapter 7.7.42
4107  * TODO:        find OMC-ID description
4108  */
4109 static int
4110 decode_gtp_omc_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4111
4112         guint16         length;
4113
4114         length = tvb_get_ntohs(tvb, offset + 1);
4115
4116         proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_OMC_ID, gtp_val, "Unknown"), length);
4117
4118         return 3 + length;
4119
4120 }
4121
4122 /* GPRS:        9.60 v7.6.0, chapter 7.9.25
4123  * UMTS:        29.060 v4.0, chapter 7.7.43
4124  */
4125 static int
4126 decode_gtp_chrg_addr(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4127
4128         guint16         length;
4129         guint32         addr_ipv4;
4130         struct  e_in6_addr addr_ipv6;
4131         proto_tree      *ext_tree_chrg_addr;
4132         proto_item      *te;
4133
4134         length = tvb_get_ntohs(tvb, offset+1);
4135
4136         te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s : ", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown"));
4137         ext_tree_chrg_addr = proto_item_add_subtree(te, ett_gtp_chrg_addr);
4138
4139         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);
4140
4141         switch (length) {
4142                 case 4:
4143                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
4144                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
4145                         proto_tree_add_ipv4(ext_tree_chrg_addr, gtp_version ? hf_gtpv1_chrg_ipv4 : hf_gtpv0_chrg_ipv4, tvb, offset+3, 4, addr_ipv4);
4146                         break;
4147                 case 16:
4148                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
4149                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
4150                         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);
4151                         break;
4152                 default:
4153                         proto_item_append_text(te, "unknown type or wrong length");
4154                         break;
4155         }
4156
4157         return 3 + length;
4158 }
4159
4160 /* GPRS:        12.15
4161  * UMTS:        33.015
4162  */
4163 static int
4164 decode_gtp_rel_pack(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4165
4166         guint16         length, n, number;
4167         proto_tree      *ext_tree_rel_pack;
4168         proto_item      *te;
4169
4170         length = tvb_get_ntohs(tvb, offset + 1);
4171
4172         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of released packets IE");
4173         ext_tree_rel_pack = proto_item_add_subtree(te, ett_gtp_rel_pack);
4174
4175         n = 0;
4176
4177         while (n < length) {
4178
4179                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4180                 proto_tree_add_text(ext_tree_rel_pack, tvb, offset + 3 + n, 2, "%u", number);
4181                 n = n + 2;
4182
4183         }
4184
4185         return 3 + length;
4186 }
4187
4188 /* GPRS:        12.15
4189  * UMTS:        33.015
4190  */
4191 static int
4192 decode_gtp_can_pack(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4193
4194         guint16         length, n, number;
4195         proto_tree      *ext_tree_can_pack;
4196         proto_item      *te;
4197
4198         length = tvb_get_ntohs(tvb, offset + 1);
4199
4200         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of cancelled  packets IE");
4201         ext_tree_can_pack = proto_item_add_subtree(te, ett_gtp_can_pack);
4202
4203         n = 0;
4204
4205         while (n < length) {
4206
4207                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4208                 proto_tree_add_text(ext_tree_can_pack, tvb, offset + 3 + n, 2, "%u", number);
4209                 n = n + 2;
4210
4211         }
4212
4213         return 3 + length;
4214 }
4215
4216 /* CDRs dissector */
4217 static int
4218 decode_gtp_data_req(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4219
4220         guint16         length, format_ver, data_len, i, j;
4221         guint8          no, format, rectype;
4222         proto_tree      *ext_tree, *cdr_tree;
4223         proto_item      *te, *ce;
4224
4225         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_DATA_REQ, gtp_val, "Unknown message"));
4226         ext_tree = proto_item_add_subtree(te, ett_gtp_ext);
4227
4228         length = tvb_get_ntohs(tvb, offset + 1);
4229         no = tvb_get_guint8(tvb, offset + 3);
4230         format = tvb_get_guint8(tvb, offset + 4);
4231         format_ver = tvb_get_ntohs(tvb, offset + 5);
4232
4233         proto_tree_add_text(ext_tree, tvb, offset+1, 2, "Length: %u", length);
4234         proto_tree_add_text(ext_tree, tvb, offset+3, 1, "Number of data records: %u", no);
4235         proto_tree_add_text(ext_tree, tvb, offset+4, 1, "Data record format: %u", format);
4236         proto_tree_add_text(ext_tree, tvb, offset+5, 2, "Data record format version: %u", format_ver);
4237
4238         data_len = 0;
4239         offset = offset + 7;
4240
4241         if (gtpv0_cdr_as != DONT_DISSECT_CDRS) {
4242
4243         for (i = 0; i < no; i++) {
4244                 data_len = tvb_get_ntohs(tvb, offset);
4245                 rectype = tvb_get_guint8(tvb, offset+2);
4246                 switch (rectype) {
4247                         case 0x13:              /* GCDR */
4248                                 if (tvb_length_remaining(tvb, offset) < 3 + 118) {
4249                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "GCDR fragmented, can't dissect");
4250                                         break;
4251                                 }
4252
4253                                 tvb_memcpy(tvb, gcdr.imsi, offset+3, 8);
4254                                 tvb_memcpy(tvb, (guint8 *)&gcdr.ggsnaddr, offset+11, sizeof gcdr.ggsnaddr);
4255                                 gcdr.chrgid = tvb_get_ntohl(tvb, offset+15);
4256                                 tvb_memcpy(tvb, (guint8 *)&gcdr.sgsnaddr, offset+19, sizeof gcdr.sgsnaddr);
4257                                 tvb_memcpy(tvb, gcdr.apn, offset+23, 63);
4258                                 gcdr.pdporg = tvb_get_guint8(tvb, offset+86);
4259                                 gcdr.pdptype = tvb_get_guint8(tvb, offset+87);
4260                                 tvb_memcpy(tvb, (guint8 *)&gcdr.pdpaddr, offset+88, sizeof gcdr.pdpaddr);
4261                                 gcdr.addrflag = tvb_get_guint8(tvb, offset+92);
4262                                 gcdr.uplink = tvb_get_ntohl(tvb, offset+96);
4263                                 gcdr.downlink = tvb_get_ntohl(tvb, offset+100);
4264                                 gcdr.timestamp = tvb_get_ntohl(tvb, offset+104);
4265                                 gcdr.opening = tvb_get_ntohl(tvb, offset+108);
4266                                 gcdr.duration = tvb_get_ntohl(tvb, offset+112);
4267                                 gcdr.closecause = tvb_get_guint8(tvb, offset+116);
4268                                 gcdr.seqno = tvb_get_ntohl(tvb, offset+117);
4269
4270                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "GCDR (0x13), sequence number: %u", gcdr.seqno);
4271                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4272                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4273                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4274                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 8, "IMSI: %s", id_to_str(gcdr.imsi));
4275                                 proto_tree_add_text(cdr_tree, tvb, offset+11, 4, "GGSN address: %s", ip_to_str((guint8 *)&gcdr.ggsnaddr));
4276                                 proto_tree_add_text(cdr_tree, tvb, offset+15, 4, "Charging ID: %x", gcdr.chrgid);
4277                                 proto_tree_add_text(cdr_tree, tvb, offset+19, 4, "SGSN address: %s", ip_to_str((guint8 *)&gcdr.sgsnaddr));
4278                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 63, "APN: %s", gcdr.apn);
4279                                 proto_tree_add_text(cdr_tree, tvb, offset+86, 1, "PDP org: %s", val_to_str(gcdr.pdporg, pdp_org_type, "Unknown PDP org"));
4280                                 proto_tree_add_text(cdr_tree, tvb, offset+87, 1, "PDP type: %s", val_to_str(gcdr.pdptype, pdp_type, "Unknown PDP type"));
4281                                 proto_tree_add_text(cdr_tree, tvb, offset+88, 4, "PDP address: %s", ip_to_str((guint8 *)&gcdr.pdpaddr));
4282                                 proto_tree_add_text(cdr_tree, tvb, offset+92, 1, "PDP address type: %u", gcdr.addrflag);
4283                                 decode_qos_gprs(tvb, offset+93, cdr_tree, "QoS", 0);
4284                                 proto_tree_add_text(cdr_tree, tvb, offset+96, 4, "Uplink volume: %u", gcdr.uplink);
4285                                 proto_tree_add_text(cdr_tree, tvb, offset+100, 4, "Downlink volume: %u", gcdr.downlink);
4286                                 proto_tree_add_text(cdr_tree, tvb, offset+104, 4, "Timestamp: %s", time_int_to_str(gcdr.timestamp));
4287                                 proto_tree_add_text(cdr_tree, tvb, offset+108, 4, "Record opening time: %s", time_int_to_str(gcdr.opening));
4288                                 proto_tree_add_text(cdr_tree, tvb, offset+112, 4, "Duration: %s", rel_time_int_to_str(gcdr.duration));
4289                                 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);
4290                                 proto_tree_add_text(cdr_tree, tvb, offset+117, 4, "Sequence number: %u", gcdr.seqno);
4291
4292                                 if (data_len > 119) {
4293                                         tvb_memcpy (tvb, gcdr.msisdn, offset + 121, 9);
4294                                         proto_tree_add_text(cdr_tree, tvb, offset+121, 9, "MSISDN: %s", msisdn_to_str (gcdr.msisdn, 9));
4295                                 }
4296
4297                                 break;
4298
4299                         case 0x12:              /* SCDR */
4300                                 if (tvb_length_remaining(tvb, offset) < 3 + 277) {
4301                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SCDR fragmented, can't dissect");
4302                                         break;
4303                                 }
4304
4305                                 scdr.len = tvb_get_letohs(tvb, offset+3);
4306                                 scdr.netini = tvb_get_guint8(tvb, offset+5);
4307                                 scdr.anon = tvb_get_guint8(tvb, offset+6);
4308                                 scdr.imsilen = tvb_get_guint8(tvb, offset+7);
4309                                 tvb_memcpy(tvb, scdr.imsi, offset+8, 8);
4310                                 tvb_memcpy(tvb, scdr.imei, offset+16, 8);
4311                                 scdr.msisdnlen = tvb_get_guint8(tvb, offset+24);
4312                                 tvb_memcpy(tvb, scdr.msisdn, offset+25, 10);
4313                                 tvb_memcpy(tvb, (guint8 *)&scdr.sgsnaddr, offset+35, sizeof scdr.sgsnaddr);
4314                                 tvb_memcpy(tvb, scdr.msclass_notused, offset+39, 12);
4315                                 scdr.msclass_caplen = tvb_get_guint8(tvb, offset+51);
4316                                 scdr.msclass_cap = tvb_get_guint8(tvb, offset+52);
4317                                 scdr.msclass_capomit = tvb_get_ntohs(tvb, offset+53);
4318                                 scdr.lac = tvb_get_ntohs(tvb, offset+55);
4319                                 scdr.rac = tvb_get_guint8(tvb, offset+57);
4320                                 scdr.cid = tvb_get_ntohs(tvb, offset+58);
4321                                 scdr.chrgid = tvb_get_ntohl(tvb, offset+60);
4322                                 tvb_memcpy(tvb, (guint8 *)&scdr.ggsnaddr, offset+64, sizeof scdr.ggsnaddr);
4323                                 tvb_memcpy(tvb, scdr.apn, offset+68, 64);
4324                                 scdr.pdporg = tvb_get_guint8(tvb, offset+132);
4325                                 scdr.pdptype = tvb_get_guint8(tvb, offset+133);
4326                                 tvb_memcpy(tvb, (guint8 *)&scdr.pdpaddr, offset+134, sizeof scdr.pdpaddr);
4327                                 scdr.listind = tvb_get_guint8(tvb, offset+138);
4328                                 for (j=0;j<4;j++) {
4329                                         scdr.change[j].change = tvb_get_guint8(tvb, offset+139+23*j);
4330                                         scdr.change[j].time1 = tvb_get_ntohl(tvb, offset+140+23*j);
4331                                         scdr.change[j].time2 = tvb_get_ntohl(tvb, offset+144+23*j);
4332                                         scdr.change[j].uplink = tvb_get_ntohl(tvb, offset+148+23*j);
4333                                         scdr.change[j].downlink = tvb_get_ntohl(tvb, offset+152+23*j);
4334 /*                                      tvb_memcpy(tvb, scdr.change[j].qos_req, offset+156+23*j, 3);
4335                                         tvb_memcpy(tvb, scdr.change[j].qos_neg, offset+159+23*j, 3);*/
4336                                 }
4337                                 scdr.timestamp = tvb_get_ntohl(tvb, offset+254);
4338                                 scdr.opening = tvb_get_ntohl(tvb, offset+258);
4339                                 scdr.duration = tvb_get_ntohl(tvb, offset+262);
4340                                 scdr.sgsnchange = tvb_get_guint8(tvb, offset+266);
4341                                 scdr.closecause = tvb_get_guint8(tvb, offset+267);
4342                                 scdr.diag1 = tvb_get_guint8(tvb, offset+268);
4343                                 scdr.diag2 = tvb_get_guint8(tvb, offset+269);
4344                                 scdr.diag3 = tvb_get_guint8(tvb, offset+270);
4345                                 scdr.diag4 = tvb_get_guint8(tvb, offset+271);
4346                                 scdr.diag5 = tvb_get_ntohl(tvb, offset+272);
4347                                 scdr.seqno = tvb_get_ntohl(tvb, offset+276);
4348
4349                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SCDR (type %x), sequence number: %u", rectype, scdr.seqno);
4350                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4351                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4352                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4353                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "CDR length: %u", scdr.len);
4354                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "Network initiated PDP context: %s", yesno[scdr.netini]);
4355                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 1, "Anonymous acces: %s", yesno[scdr.anon]);
4356                                 proto_tree_add_text(cdr_tree, tvb, offset+7, 1, "IMSI length: %u", scdr.imsilen);
4357                                 proto_tree_add_text(cdr_tree, tvb, offset+8, 8, "IMSI: %s", id_to_str(scdr.imsi));
4358                                 proto_tree_add_text(cdr_tree, tvb, offset+16, 8, "IMEI: %s", id_to_str(scdr.imei));
4359                                 proto_tree_add_text(cdr_tree, tvb, offset+24, 1, "MSISDN length: %u", scdr.msisdnlen);
4360                                 proto_tree_add_text(cdr_tree, tvb, offset+25, 10, "MSISDN: %s", msisdn_to_str(scdr.msisdn, 10));
4361                                 proto_tree_add_text(cdr_tree, tvb, offset+35, 4, "SGSN address: %s", ip_to_str((guint8 *)&scdr.sgsnaddr));
4362                                 proto_tree_add_text(cdr_tree, tvb, offset+39, 12, "(not used)");
4363                                 proto_tree_add_text(cdr_tree, tvb, offset+51, 1, "MS network capability length: %u", scdr.msclass_caplen);
4364
4365 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+52, 1, "MS network capability: %u", scdr.msclass_cap);
4366                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4367                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+52, 1, scdr.cap);
4368                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+52, 1, scdr.cap);
4369                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+52, 1, scdr.cap);
4370                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+52, 1, scdr.cap);
4371                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+52, 1, scdr.cap);
4372                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+52, 1, scdr.cap);
4373                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+52, 1, scdr.cap);
4374 */
4375
4376                                 proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "MS network capability omitted: %u", scdr.msclass_capomit);
4377                                 proto_tree_add_text(cdr_tree, tvb, offset+55, 2, "LAC: %u", scdr.lac);
4378                                 proto_tree_add_text(cdr_tree, tvb, offset+57, 1, "RAC: %u", scdr.rac);
4379                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 2, "Cell ID: %u", scdr.cid);
4380                                 proto_tree_add_text(cdr_tree, tvb, offset+60, 4, "Charging ID: %x", scdr.chrgid);
4381                                 proto_tree_add_text(cdr_tree, tvb, offset+64, 4, "GGSN address: %s", ip_to_str((guint8 *)&scdr.ggsnaddr));
4382                                 proto_tree_add_text(cdr_tree, tvb, offset+68, 64, "APN: %s", scdr.apn);
4383                                 proto_tree_add_text(cdr_tree, tvb, offset+132, 1, "PDP org: %s", val_to_str(scdr.pdporg, pdp_org_type, "Unknown PDP org"));
4384                                 proto_tree_add_text(cdr_tree, tvb, offset+133, 1, "PDP type: %s", val_to_str(scdr.pdptype, pdp_type, "Unknown PDP type"));
4385                                 proto_tree_add_text(cdr_tree, tvb, offset+134, 4, "PDP address: %s", ip_to_str((guint8 *)&scdr.pdpaddr));
4386                                 proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "List of data volume index: %u", scdr.listind);
4387                                 for (j=0;j<4;j++) {
4388                                         proto_tree_add_text(cdr_tree, tvb, offset+139+23*j, 1, "List of data vol change condition: %u", scdr.change[j].change);
4389                                         proto_tree_add_text(cdr_tree, tvb, offset+140+23*j, 4, "Time1: %x", scdr.change[j].time1);
4390                                         proto_tree_add_text(cdr_tree, tvb, offset+144+23*j, 4, "Time2: %x", scdr.change[j].time2);
4391                                         proto_tree_add_text(cdr_tree, tvb, offset+148+23*j, 4, "Uplink: %x", scdr.change[j].uplink);
4392                                         proto_tree_add_text(cdr_tree, tvb, offset+152+23*j, 4, "Downlink: %x", scdr.change[j].downlink);
4393                                         decode_qos_gprs(tvb, offset+156, cdr_tree, "QoS requested", 0);
4394                                         decode_qos_gprs(tvb, offset+159, cdr_tree, "QoS negotiated", 0);
4395                                 }
4396                                 proto_tree_add_text(cdr_tree, tvb, offset+254, 4, "Timestamp: %s", time_int_to_str(scdr.timestamp));
4397                                 proto_tree_add_text(cdr_tree, tvb, offset+258, 4, "Opening: %s", time_int_to_str(scdr.opening));
4398                                 proto_tree_add_text(cdr_tree, tvb, offset+262, 4, "Duration: %s", rel_time_int_to_str(scdr.duration));
4399                                 proto_tree_add_text(cdr_tree, tvb, offset+266, 1, "SGSN change: %u", scdr.sgsnchange);
4400                                 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);
4401                                 proto_tree_add_text(cdr_tree, tvb, offset+268, 1, "Diagnostics 1: %u", scdr.diag1);
4402                                 proto_tree_add_text(cdr_tree, tvb, offset+269, 1, "Diagnostics 2: %u", scdr.diag2);
4403                                 proto_tree_add_text(cdr_tree, tvb, offset+270, 1, "Diagnostics 3: %u", scdr.diag3);
4404                                 proto_tree_add_text(cdr_tree, tvb, offset+271, 1, "Diagnostics 4: %u", scdr.diag4);
4405                                 proto_tree_add_text(cdr_tree, tvb, offset+272, 4, "Diagnostics 5: %u", scdr.diag5);
4406                                 proto_tree_add_text(cdr_tree, tvb, offset+276, 4, "Sequence number: %u", scdr.seqno);
4407                                 break;
4408                         case 0x14:              /* MCDR */
4409                                 if (tvb_length_remaining(tvb, offset) < 3 + 147) {
4410                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "MCDR fragmented, can't dissect");
4411                                         break;
4412                                 }
4413
4414                                 mcdr.len = tvb_get_ntohs(tvb, offset+3);
4415                                 mcdr.imsilen = tvb_get_guint8(tvb, offset+5);
4416                                 tvb_memcpy(tvb, mcdr.imsi, offset+6, 8);
4417                                 tvb_memcpy(tvb, mcdr.imei, offset+14, 8);
4418                                 mcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4419                                 tvb_memcpy(tvb, mcdr.msisdn, offset+23, 10);
4420                                 tvb_memcpy(tvb, (guint8 *)&mcdr.sgsnaddr, offset+33, sizeof mcdr.sgsnaddr);
4421                                 tvb_memcpy(tvb, mcdr.msclass_notused, offset+37, 12);
4422                                 mcdr.msclass_caplen = tvb_get_guint8(tvb, offset+49);
4423                                 mcdr.msclass_cap = tvb_get_guint8(tvb, offset+50);
4424                                 mcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+51);
4425                                 mcdr.lac = tvb_get_ntohs(tvb, offset+53);
4426                                 mcdr.rac = tvb_get_guint8(tvb, offset+55);
4427                                 mcdr.cid = tvb_get_ntohs(tvb, offset+56);
4428                                 mcdr.change_count = tvb_get_guint8(tvb, offset+58);
4429                                 for (j=0;j<4;j++) {
4430                                         mcdr.change[j].lac = tvb_get_ntohs(tvb, offset+59+13*j);
4431                                         mcdr.change[j].rac = tvb_get_guint8(tvb, offset+61+13*j);
4432                                         mcdr.change[j].cid = tvb_get_ntohs(tvb, offset+62+13*j);
4433                                         tvb_memcpy(tvb, mcdr.change[j].omit, offset+64+13*j, 8);
4434                                 }
4435                                 mcdr.timestamp = tvb_get_ntohl(tvb, offset+124);
4436                                 mcdr.opening = tvb_get_ntohl(tvb, offset+128);
4437                                 mcdr.duration = tvb_get_ntohl(tvb, offset+132);
4438                                 mcdr.sgsnchange = tvb_get_guint8(tvb, offset+136);
4439                                 mcdr.closecause = tvb_get_guint8(tvb, offset+137);
4440                                 mcdr.diag1 = tvb_get_guint8(tvb, offset+138);
4441                                 mcdr.diag2 = tvb_get_guint8(tvb, offset+139);
4442                                 mcdr.diag3 = tvb_get_guint8(tvb, offset+140);
4443                                 mcdr.diag4 = tvb_get_guint8(tvb, offset+141);
4444                                 mcdr.diag5 = tvb_get_ntohl(tvb, offset+142);
4445                                 mcdr.seqno = tvb_get_ntohl(tvb, offset+146);
4446
4447                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "MCDR (0x14), sequence number: %u", mcdr.seqno);
4448                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4449                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4450                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4451                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", mcdr.len);
4452                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", mcdr.imsilen);
4453                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(mcdr.imsi));
4454                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(mcdr.imei));
4455                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", mcdr.msisdnlen);
4456                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(mcdr.msisdn, 10));
4457                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 4, "SGSN address: %s", ip_to_str((guint8 *)&mcdr.sgsnaddr));
4458                                 proto_tree_add_text(cdr_tree, tvb, offset+37, 12, "(not used)");
4459                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 1, "MS network capability length: %u", mcdr.msclass_caplen);
4460
4461 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+50, 1, "MS network capability: %u", mcdr.msclass_cap);
4462                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4463                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+50, 1, mcdr.cap);
4464                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+50, 1, mcdr.cap);
4465                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+50, 1, mcdr.cap);
4466                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+50, 1, mcdr.cap);
4467                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+50, 1, mcdr.cap);
4468                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+50, 1, mcdr.cap);
4469                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+50, 1, mcdr.cap);
4470 */
4471                                 proto_tree_add_text(cdr_tree, tvb, offset+51, 2, "MS network capability omitted: %u", mcdr.msclass_capomit);
4472                                 proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "LAC: %u", mcdr.lac);
4473                                 proto_tree_add_text(cdr_tree, tvb, offset+55, 1, "RAC: %u", mcdr.rac);
4474                                 proto_tree_add_text(cdr_tree, tvb, offset+56, 2, "Cell ID: %u", mcdr.cid);
4475                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 1, "List of data volume changes: %u", mcdr.change_count);
4476                                 for (j=0;j<4;j++) {
4477                                         proto_tree_add_text(cdr_tree, tvb, offset+59+13*j, 2, "LAC: %u", mcdr.change[j].lac);
4478                                         proto_tree_add_text(cdr_tree, tvb, offset+61+13*j, 1, "RAC: %u", mcdr.change[j].rac);
4479                                         proto_tree_add_text(cdr_tree, tvb, offset+62+13*j, 2, "CID: %u", mcdr.change[j].cid);
4480                                         proto_tree_add_text(cdr_tree, tvb, offset+64+13*j, 8, "(omitted)");
4481                                 }
4482
4483                                 proto_tree_add_text(cdr_tree, tvb, offset+124, 4, "Timestamp: %s", time_int_to_str(mcdr.timestamp));
4484                                 proto_tree_add_text(cdr_tree, tvb, offset+128, 4, "Record opening time: %s", time_int_to_str(mcdr.opening));
4485                                 proto_tree_add_text(cdr_tree, tvb, offset+132, 4, "Duration: %s", rel_time_int_to_str(mcdr.duration));
4486                                 proto_tree_add_text(cdr_tree, tvb, offset+136, 1, "SGSN change: %u", mcdr.sgsnchange);
4487                                 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);
4488                                 proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "Diagnostics 1: %u", mcdr.diag1);
4489                                 proto_tree_add_text(cdr_tree, tvb, offset+139, 1, "Diagnostics 2: %u", mcdr.diag2);
4490                                 proto_tree_add_text(cdr_tree, tvb, offset+140, 1, "Diagnostics 3: %u", mcdr.diag3);
4491                                 proto_tree_add_text(cdr_tree, tvb, offset+141, 1, "Diagnostics 4: %u", mcdr.diag4);
4492                                 proto_tree_add_text(cdr_tree, tvb, offset+142, 4, "Diagnostics 5: %u", mcdr.diag5);
4493                                 proto_tree_add_text(cdr_tree, tvb, offset+146, 4, "Sequence number: %u", mcdr.seqno);
4494                                 break;
4495
4496                         case 0x15:              /* SOCDR */
4497                                 if (tvb_length_remaining(tvb, offset) < 3 + 80) {
4498                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SOCDR fragmented, can't dissect");
4499                                         break;
4500                                 }
4501
4502                                 socdr.len = tvb_get_ntohs(tvb, offset+3);
4503                                 socdr.imsilen = tvb_get_guint8(tvb, offset+5);
4504                                 tvb_memcpy(tvb, socdr.imsi, offset+6, 8);
4505                                 tvb_memcpy(tvb, socdr.imei, offset+14, 8);
4506                                 socdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4507                                 tvb_memcpy(tvb, socdr.msisdn, offset+23, 10);
4508                                 tvb_memcpy(tvb, socdr.msclass_notused, offset+33, 12);
4509                                 socdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
4510                                 socdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
4511                                 socdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
4512                                 tvb_memcpy(tvb, socdr.serv_centr, offset+49, 9);
4513                                 tvb_memcpy(tvb, socdr.rec_ent, offset+58, 9);
4514                                 socdr.lac = tvb_get_ntohs(tvb, offset+67);
4515                                 socdr.rac = tvb_get_guint8(tvb, offset+69);
4516                                 socdr.cid = tvb_get_ntohs(tvb, offset+70);
4517                                 socdr.time1 = tvb_get_ntohl(tvb, offset+72);
4518                                 socdr.time2 = tvb_get_ntohl(tvb, offset+76);
4519                                 socdr.messref = tvb_get_guint8(tvb, offset+80);
4520                                 socdr.smsres = tvb_get_ntohs(tvb, offset+81);
4521
4522                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SOCDR (0x15)");
4523                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4524                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4525                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4526                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", socdr.len);
4527                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", socdr.imsilen);
4528                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(socdr.imsi));
4529                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(socdr.imei));
4530                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", socdr.msisdnlen);
4531                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(socdr.msisdn, 10));
4532                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
4533                                 proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", socdr.msclass_caplen);
4534
4535 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", socdr.msclass_cap);
4536                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4537                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, socdr.cap);
4538                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, socdr.cap);
4539                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, socdr.cap);
4540                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, socdr.cap);
4541                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, socdr.cap);
4542                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, socdr.cap);
4543 */
4544                                 proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
4545                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(socdr.serv_centr, 9));
4546                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(socdr.rec_ent, 9));
4547                                 proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", socdr.lac);
4548                                 proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", socdr.rac);
4549                                 proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", socdr.cid);
4550                                 proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(socdr.time1));
4551                                 proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(socdr.time2));
4552                                 proto_tree_add_text(cdr_tree, tvb, offset+80, 1, "Message reference: %u", socdr.messref);
4553                                 proto_tree_add_text(cdr_tree, tvb, offset+81, 2, "Delivery result: %u", socdr.smsres);
4554                                 break;
4555
4556                         case 0x16:              /* STCDR */
4557                                 if (tvb_length_remaining(tvb, offset) < 3 + 79) {
4558                                         proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "STCDR fragmented, can't dissect");
4559                                         break;
4560                                 }
4561
4562                                 stcdr.len = tvb_get_ntohs(tvb, offset+3);
4563                                 stcdr.imsilen = tvb_get_guint8(tvb, offset+5);
4564                                 tvb_memcpy(tvb, stcdr.imsi, offset+6, 8);
4565                                 tvb_memcpy(tvb, stcdr.imei, offset+14, 8);
4566                                 stcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
4567                                 tvb_memcpy(tvb, stcdr.msisdn, offset+23, 10);
4568                                 tvb_memcpy(tvb, stcdr.msclass_notused, offset+33, 12);
4569                                 stcdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
4570                                 stcdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
4571                                 stcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
4572                                 tvb_memcpy(tvb, stcdr.serv_centr, offset+49, 9);
4573                                 tvb_memcpy(tvb, stcdr.rec_ent, offset+58, 9);
4574                                 stcdr.lac = tvb_get_ntohs(tvb, offset+67);
4575                                 stcdr.rac = tvb_get_guint8(tvb, offset+69);
4576                                 stcdr.cid = tvb_get_ntohs(tvb, offset+70);
4577                                 stcdr.time1 = tvb_get_ntohl(tvb, offset+72);
4578                                 stcdr.time2 = tvb_get_ntohl(tvb, offset+76);
4579                                 stcdr.smsres = tvb_get_ntohs(tvb, offset+80);
4580
4581                                 ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "STCDR (0x16)");
4582                                 cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
4583                                 proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
4584                                 proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
4585                                 proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", stcdr.len);
4586                                 proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", stcdr.imsilen);
4587                                 proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(stcdr.imsi));
4588                                 proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(stcdr.imei));
4589                                 proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", stcdr.msisdnlen);
4590                                 proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(stcdr.msisdn, 10));
4591                                 proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
4592                                 proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", stcdr.msclass_caplen);
4593
4594 /*                              cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", stcdr.msclass_cap);
4595                                 cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
4596                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, stcdr.cap);
4597                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, stcdr.cap);
4598                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, stcdr.cap);
4599                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, stcdr.cap);
4600                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, stcdr.cap);
4601                                 proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, stcdr.cap);
4602 */
4603                                 proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
4604                                 proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(stcdr.serv_centr, 9));
4605                                 proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(stcdr.rec_ent, 9));
4606                                 proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", stcdr.lac);
4607                                 proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", stcdr.rac);
4608                                 proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", stcdr.cid);
4609                                 proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(stcdr.time1));
4610                                 proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(stcdr.time2));
4611                                 proto_tree_add_text(cdr_tree, tvb, offset+80, 2, "Delivery result: %u", stcdr.smsres);
4612                                 break;
4613                 }
4614                 offset = offset + 2 + data_len;
4615         }
4616         }
4617         return 3+length;
4618 }
4619
4620 /* GPRS:        12.15
4621  * UMTS:        33.015
4622  */
4623 static int
4624 decode_gtp_data_resp(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4625
4626         guint16         length, n, number;
4627         proto_tree      *ext_tree_data_resp;
4628         proto_item      *te;
4629
4630         length = tvb_get_ntohs(tvb, offset + 1);
4631
4632         te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Requests responded");
4633         ext_tree_data_resp = proto_item_add_subtree(te, ett_gtp_data_resp);
4634
4635         n = 0;
4636
4637         while (n < length) {
4638
4639                 number = tvb_get_ntohs(tvb, offset + 3 + n);
4640                 proto_tree_add_text(ext_tree_data_resp, tvb, offset + 3 + n, 2, "%u", number);
4641                 n = n + 2;
4642
4643         }
4644
4645         return 3 + length;
4646
4647 }
4648
4649 /* GPRS:        12.15
4650  * UMTS:        33.015
4651  */
4652 static int
4653 decode_gtp_node_addr(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4654
4655         guint16         length;
4656         guint32         addr_ipv4;
4657         struct  e_in6_addr addr_ipv6;
4658         proto_tree      *ext_tree_node_addr;
4659         proto_item      *te;
4660
4661         length = tvb_get_ntohs(tvb, offset+1);
4662
4663         te = proto_tree_add_text(tree, tvb, offset, 3+length, "Node address: ");
4664         ext_tree_node_addr = proto_item_add_subtree(te, ett_gtp_node_addr);
4665
4666         proto_tree_add_text(ext_tree_node_addr, tvb, offset+1, 2, "Node address length: %u", length);
4667
4668         switch (length) {
4669                 case 4:
4670                         tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
4671                         proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
4672                         proto_tree_add_ipv4(ext_tree_node_addr, gtp_version ? hf_gtpv1_node_ipv4 : hf_gtpv0_node_ipv4, tvb, offset+3, 4, addr_ipv4);
4673                         break;
4674                 case 16:
4675                         tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
4676                         proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
4677                         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);
4678                         break;
4679                 default:
4680                         proto_item_append_text(te, "unknown type or wrong length");
4681                         break;
4682         }
4683
4684         return 3 + length;
4685
4686 }
4687
4688 /* GPRS:        9.60 v7.6.0, chapter 7.9.26
4689  * UMTS:        29.060 v4.0, chapter 7.7.44
4690  */
4691 static int
4692 decode_gtp_priv_ext(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4693
4694         guint16         length, ext_id;
4695         gchar           ext_val[64];
4696         proto_tree      *ext_tree_priv_ext;
4697         proto_item      *te;
4698
4699         te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_PRIV_EXT, gtp_val, "Unknown message"));
4700         ext_tree_priv_ext = proto_item_add_subtree(te, ett_gtp_ext);
4701
4702         length = tvb_get_ntohs(tvb, offset+1);
4703         if (length < 1) return 3+length;
4704
4705         ext_id = tvb_get_ntohs(tvb, offset+3);
4706         tvb_memcpy(tvb, ext_val, offset+5, length > 65 ? 63 : length-2);
4707         ext_val[length > 65 ? 64 : length-1] = '\0';
4708         proto_tree_add_uint(ext_tree_priv_ext, gtp_version ? hf_gtpv1_ext_id : hf_gtpv0_ext_id, tvb, offset+3, 2, ext_id);
4709         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);
4710
4711         return 3+length;
4712 }
4713
4714 static int
4715 decode_gtp_unknown(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
4716
4717         proto_tree_add_text(tree, tvb, offset, 1, "Unknown extension header");
4718
4719         return tvb_length_remaining(tvb, offset);
4720 }
4721
4722 static void
4723 dissect_gtpv0(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
4724 {
4725
4726         _gtpv0_hdr      gtpv0_hdr;
4727         proto_item      *ti, *tf;
4728         proto_tree      *gtpv0_tree, *flags_tree;
4729         guint8          ext_hdr_val;
4730         tvbuff_t        *next_tvb;
4731         const guint8    *tid_val;
4732         gchar           *tid_str;
4733         int             offset, length, i, mandatory, checked_field;
4734
4735         if (check_col(pinfo->cinfo, COL_PROTOCOL))
4736                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
4737         if (check_col(pinfo->cinfo, COL_INFO))
4738                 col_clear(pinfo->cinfo, COL_INFO);
4739
4740         tvb_memcpy(tvb, (guint8 *)&gtpv0_hdr, 0, 12);
4741         tid_val = tvb_get_ptr(tvb, 12, 8);
4742         tid_str = id_to_str(tid_val);
4743         gtp_version = (gtpv0_hdr.flags >> 5) & 0x07;
4744
4745         if (!((gtpv0_hdr.flags >> 4) & 1)) {
4746                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
4747                         col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-CDR");
4748         } else {
4749                 switch ((gtpv0_hdr.flags >> 5) & 0x07) {
4750                 case 0: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4751                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
4752                         break;
4753                 case 1: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4754                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv1");
4755                 default: if (check_col(pinfo->cinfo, COL_PROTOCOL))
4756                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv?");
4757                         break;
4758                 }
4759         }
4760
4761         if (check_col(pinfo->cinfo, COL_INFO))
4762                 col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv0_hdr.message, message_type, "Unknown"));
4763
4764         if (tree) {
4765
4766                 /* dissect GTP header */
4767                 ti = proto_tree_add_item(tree, proto_gtpv0, tvb, 0, -1, FALSE);
4768                 gtpv0_tree = proto_item_add_subtree(ti, ett_gtp);
4769
4770                 tf = proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flags, tvb, 0, 1, gtpv0_hdr.flags);
4771
4772                 flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
4773                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_ver, tvb, 0, 1, gtpv0_hdr.flags);
4774                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_pt, tvb, 0, 1, gtpv0_hdr.flags);
4775                 proto_tree_add_uint(flags_tree, hf_gtpv0_flags_spare, tvb, 0, 1, gtpv0_hdr.flags);
4776                 proto_tree_add_boolean(flags_tree, hf_gtpv0_flags_snn, tvb, 0, 1, gtpv0_hdr.flags);
4777
4778                 gtpv0_hdr.length = ntohs(gtpv0_hdr.length);
4779                 gtpv0_hdr.seq_no = ntohs(gtpv0_hdr.seq_no);
4780                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_message_type, tvb, 1, 1, gtpv0_hdr.message);
4781                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_length, tvb, 2, 2, gtpv0_hdr.length);
4782                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_seq_number, tvb, 4, 2, gtpv0_hdr.seq_no);
4783                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flow_label, tvb, 6, 2, gtpv0_hdr.flow_label);
4784                 proto_tree_add_uint(gtpv0_tree, hf_gtpv0_sndcp_number, tvb, 8, 1, gtpv0_hdr.sndcp_no);
4785                 proto_tree_add_string(gtpv0_tree, hf_gtpv0_tid, tvb, 12, 8, tid_str);
4786
4787                 if (gtpv0_hdr.message != GTP_MSG_TPDU) {
4788
4789                         proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[--- end of GTPv0 header, beginning of extension headers ---]");
4790
4791                         offset = GTPv0_HDR_LENGTH;
4792                         length = tvb_length(tvb);
4793
4794                         mandatory = 0;          /* check order of GTP fields against ETSI */
4795
4796                         for (;;) {
4797
4798                                 if (offset >= length) break;
4799                                 ext_hdr_val = tvb_get_guint8(tvb, offset);
4800
4801                                 if (gtpv0_etsi_order) {
4802                                         checked_field = check_field_presence (gtpv0_hdr.message, ext_hdr_val , (int *)&mandatory);
4803                                         switch (checked_field) {
4804                                                 case -2: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] message not found");
4805                                                          break;
4806                                                 case -1: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] field not present");
4807                                                          break;
4808                                                 case 0:  break;
4809                                                 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"));
4810                                         }
4811                                 }
4812
4813                                 i = -1;
4814                                 while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
4815                                 offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv0_tree);
4816                         }
4817                 }
4818         }
4819
4820 /* next part dissects sublayers of GTP
4821  * right now it's only IP */
4822
4823         if ((gtpv0_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
4824                 next_tvb = tvb_new_subset(tvb, 20, -1, -1);
4825                 call_dissector(ip_handle, next_tvb, pinfo, tree);
4826                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
4827                         col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP");
4828         }
4829
4830 }
4831
4832 /* GTP v1 dissector */
4833 static void
4834 dissect_gtpv1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
4835
4836         _gtpv1_hdr      gtpv1_hdr;
4837         proto_item      *ti, *tf;
4838         proto_tree      *gtpv1_tree, *flags_tree;
4839         guint16         seq_no;
4840         guint8          ext_hdr_val, i, hdr_offset = 4, next_hdr, npdu_no;
4841         tvbuff_t        *next_tvb;
4842         int             offset, length, mandatory, checked_field;
4843
4844         if (check_col(pinfo->cinfo, COL_PROTOCOL))
4845                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-C");
4846         if (check_col(pinfo->cinfo, COL_INFO))
4847                 col_clear(pinfo->cinfo, COL_INFO);
4848
4849         tvb_memcpy(tvb, (guint8 *)&gtpv1_hdr, 0, 8);
4850         gtp_version = (gtpv1_hdr.flags >> 5) & 0x07;
4851
4852         if (check_col(pinfo->cinfo, COL_INFO))
4853                 col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv1_hdr.message, message_type, "Unknown"));
4854
4855         if (tree) {
4856
4857                 ti = proto_tree_add_item(tree, proto_gtpv1, tvb, 0, -1, FALSE);
4858                 gtpv1_tree = proto_item_add_subtree(ti, ett_gtp);
4859
4860                 tf = proto_tree_add_uint(gtpv1_tree, hf_gtpv1_flags, tvb, 0, 1, gtpv1_hdr.flags);
4861                 flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
4862
4863                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_ver, tvb, 0, 1, gtpv1_hdr.flags);
4864                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_pt, tvb, 0, 1, gtpv1_hdr.flags);
4865                 proto_tree_add_uint(flags_tree, hf_gtpv1_flags_spare, tvb, 0, 1, gtpv1_hdr.flags);
4866                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_e, tvb, 0, 1, gtpv1_hdr.flags);
4867                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_s, tvb, 0, 1, gtpv1_hdr.flags);
4868                 proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_pn, tvb, 0, 1, gtpv1_hdr.flags);
4869
4870                 gtpv1_hdr.length = ntohs(gtpv1_hdr.length);
4871                 gtpv1_hdr.teid = ntohl(gtpv1_hdr.teid);
4872
4873                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_message_type, tvb, 1, 1, gtpv1_hdr.message);
4874                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_length, tvb, 2, 2, gtpv1_hdr.length);
4875                 proto_tree_add_uint(gtpv1_tree, hf_gtpv1_teid, tvb, 4, 4, gtpv1_hdr.teid);
4876
4877                 if (gtpv1_hdr.flags & 0x07) {
4878                         seq_no = tvb_get_ntohs (tvb, 8);
4879                         proto_tree_add_uint (gtpv1_tree, hf_gtpv1_seq_number, tvb, 8, 2, seq_no);
4880                         npdu_no = tvb_get_guint8 (tvb, 10);
4881                         proto_tree_add_uint (gtpv1_tree, hf_gtpv1_npdu_number, tvb, 10, 1, npdu_no);
4882                         next_hdr = tvb_get_guint8(tvb, 11);
4883                         proto_tree_add_uint(gtpv1_tree, hf_gtpv1_next, tvb, 11, 1, next_hdr);
4884                         hdr_offset = 0;
4885
4886                         if (next_hdr) hdr_offset = 1;
4887                         else hdr_offset = 0;
4888                 }
4889
4890                 if (gtpv1_hdr.message != GTP_MSG_TPDU) {
4891
4892                         proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[--- end of GTP v1 header, beginning of extension headers ---]");
4893
4894                         offset = GTPv1_HDR_LENGTH - hdr_offset;
4895                         length = tvb_length(tvb);
4896
4897                         mandatory = 0;          /* check order of GTP fields against ETSI */
4898
4899                         for (;;) {
4900
4901                                 if (offset >= length) break;
4902                                 ext_hdr_val = tvb_get_guint8(tvb, offset);
4903
4904                                 if (gtpv1_etsi_order) {
4905                                         checked_field = check_field_presence (gtpv1_hdr.message, ext_hdr_val , (int *)&mandatory);
4906                                         switch (checked_field) {
4907                                                 case -2: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] message not found");
4908                                                          break;
4909                                                 case -1: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] field not present");
4910                                                          break;
4911                                                 case 0:  break;
4912                                                 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"));
4913                                         }
4914                                 }
4915
4916                                 i = -1;
4917                                 while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
4918                                 offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv1_tree);
4919                         }
4920                 }
4921         }
4922
4923         if (gtpv1_hdr.message == GTP_MSG_ERR_IND)
4924                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
4925                         col_add_str(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
4926
4927
4928         if ((gtpv1_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
4929
4930                 if (gtpv1_hdr.flags & 0x07) {
4931                         if (tvb_get_guint8 (tvb, 11)) hdr_offset = 1;           /* if next_hdr != 0 */
4932                         else hdr_offset = 0;
4933                 }
4934
4935                 next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset, -1, -1);
4936                 call_dissector(ip_handle, next_tvb, pinfo, tree);
4937                 if (check_col(pinfo->cinfo, COL_PROTOCOL))
4938                         col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
4939         }
4940 }
4941
4942 static const true_false_string yes_no_tfs = {
4943         "yes" ,
4944         "no"
4945 };
4946
4947 void
4948 proto_register_gtp(void)
4949 {
4950
4951         static hf_register_info hf_gtpv0[] = {
4952
4953         { &hf_gtpv0_flags,              { "Flags",              "gtpv0.flags",                  FT_UINT8,       BASE_HEX, NULL, 0, "Ver/PT/Spare/SNN", HFILL }},
4954         { &hf_gtpv0_flags_ver,          { "Version",            "gtpv0.flags.version",          FT_UINT8,       BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
4955         { &hf_gtpv0_flags_pt,           { "Protocol type",      "gtpv0.flags.payload",          FT_UINT8,       BASE_DEC, NULL, GTP_PT_MASK, "Protocol Type (1 = GTP, 0 = GTP' )", HFILL }},
4956         { &hf_gtpv0_flags_spare,                { "Reserved",           "gtpv0.flags.reserved",         FT_UINT8,       BASE_DEC, NULL, GTP_SPARE_MASK, "Reserved (shall be sent as '111' )", HFILL }},
4957         { &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 }},
4958         { &hf_gtpv0_message_type,               { "Message type",       "gtpv0.message",                FT_UINT8,       BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
4959         { &hf_gtpv0_length,             { "Length",             "gtpv0.length",                 FT_UINT16,      BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
4960         { &hf_gtpv0_seq_number,         { "Sequence number",    "gtpv0.seq_number",             FT_UINT16,      BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
4961         { &hf_gtpv0_flow_label,         { "Flow label",         "gtpv0.flow_label",             FT_UINT16,      BASE_HEX, NULL, 0, "Flow label", HFILL }},
4962         { &hf_gtpv0_sndcp_number,               { "SNDCP N-PDU LLC Number", "gtpv0.sndcp_number",               FT_UINT8,       BASE_HEX, NULL, 0, "SNDCP N-PDU LLC Number", HFILL }},
4963         { &hf_gtpv0_tid,                        { "TID",                "gtpv0.tid",                    FT_STRING,      BASE_DEC, NULL, 0, "Tunnel Identifier", HFILL }},
4964         { &hf_gtpv0_cause,              { "Cause",              "gtpv0.cause",                  FT_UINT8,       BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
4965         { &hf_gtpv0_imsi,                       { "IMSI",               "gtpv0.imsi",                   FT_STRING,      BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
4966         { &hf_gtpv0_rai_mcc,            { "MCC",                "gtpv0.mcc",                    FT_UINT16,      BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
4967         { &hf_gtpv0_rai_mnc,            { "MNC",                "gtpv0.mnc",                    FT_UINT8,       BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
4968         { &hf_gtpv0_rai_rac,            { "RAC",                "gtpv0.rac",                    FT_UINT8,       BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
4969         { &hf_gtpv0_rai_lac,            { "LAC",                "gtpv0.lac",                    FT_UINT16,      BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
4970         { &hf_gtpv0_tlli,                       { "TLLI",               "gtpv0.tlli",                   FT_UINT32,      BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
4971         { &hf_gtpv0_ptmsi,              { "P-TMSI",             "gtpv0.ptmsi",                  FT_UINT32,      BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
4972         { &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 }},
4973         { &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 }},
4974         { &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 }},
4975         { &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 }},
4976         { &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 }},
4977         { &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 }},
4978         { &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 }},
4979         { &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 }},
4980         { &hf_gtpv0_reorder,            { "Reordering required","gtpv0.reorder",                FT_BOOLEAN,     BASE_NONE,NULL, 0, "Reordering required", HFILL }},
4981         { &hf_gtpv0_map_cause,          { "MAP cause",          "gtpv0.map_cause",              FT_UINT8,       BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
4982         { &hf_gtpv0_ptmsi_sig,          { "P-TMSI signature",   "gtpv0.ptmsi_sig",              FT_UINT24,      BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
4983         { &hf_gtpv0_ms_valid,           { "MS validated",       "gtpv0.ms_valid",               FT_BOOLEAN,     BASE_NONE,NULL, 0, "MS validated", HFILL }},
4984         { &hf_gtpv0_recovery,           { "Recovery",           "gtpv0.recovery",               FT_UINT8,       BASE_DEC, NULL, 0, "Restart counter", HFILL }},
4985         { &hf_gtpv0_sel_mode,           { "Selection mode",     "gtpv0.sel_mode",               FT_UINT8,       BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
4986         { &hf_gtpv0_ext_flow_label,     { "Flow Label Data I",  "gtpv0.ext_flow_label",         FT_UINT16,      BASE_DEC, NULL, 0, "Flow label data", HFILL }},
4987         { &hf_gtpv0_flow_sig,           { "Flow label Signalling",      "gtpv0.flow_sig",       FT_UINT16,      BASE_DEC, NULL, 0, "Flow label signalling", HFILL }},
4988         { &hf_gtpv0_nsapi,              { "NSAPI ",             "gtpv0.nsapi",                  FT_UINT8,       BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
4989         { &hf_gtpv0_flow_ii,            { "Flow Label Data II ","gtpv0.flow_ii",                FT_UINT16,      BASE_DEC, NULL, 0, "Downlink flow label data", HFILL }},
4990         { &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 }},
4991         { &hf_gtpv0_tr_comm,            { "Packet transfer command",    "gtpv0.tr_comm",        FT_UINT8,       BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
4992         { &hf_gtpv0_chrg_id,            { "Charging ID ",       "gtpv0.chrg_id",                FT_UINT32,      BASE_HEX, NULL, 0, "Charging ID", HFILL }},
4993         { &hf_gtpv0_user_ipv4,          { "End user address IPv4",      "gtpv0.user_ipv4",      FT_IPv4,        BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
4994         { &hf_gtpv0_user_ipv6,          { "End user address IPv6",      "gtpv0.user_ipv6",      FT_IPv6,        BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
4995         { &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 }},
4996         { &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 }},
4997         { &hf_gtpv0_apn,                        { "APN",                "gtpv0.apn",                    FT_STRING,      BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
4998         { &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 }},
4999         { &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 }},
5000         { &hf_gtpv0_gsn_ipv4,           { "GSN address IPv4",   "gtpv0.gsn_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
5001         { &hf_gtpv0_gsn_ipv6,           { "GSN address IPv6",   "gtpv0.gsn_ipv6",               FT_IPv6,        BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
5002         { &hf_gtpv0_msisdn,             { "MSISDN",             "gtpv0.msisdn",                 FT_STRING,      BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
5003         { &hf_gtpv0_chrg_ipv4,          { "CG address IPv4",    "gtpv0.chrg_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
5004         { &hf_gtpv0_chrg_ipv6,          { "CG address IPv6",    "gtpv0.chrg_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
5005         { &hf_gtpv0_node_ipv4,          { "Node address IPv4",  "gtpv0.node_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
5006         { &hf_gtpv0_node_ipv6,          { "Node address IPv6",  "gtpv0.node_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
5007         { &hf_gtpv0_ext_id,             { "Extension identifier",       "gtpv0.ext_id",         FT_UINT16,      BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
5008         { &hf_gtpv0_ext_val,            { "Extension value",            "gtpv0.ext_val",        FT_STRING,      BASE_DEC, NULL, 0, "Extension Value", HFILL }},
5009         { &hf_gtpv0_unknown,            { "Unknown data (length)",      "gtpv0.unknown",        FT_UINT16,      BASE_DEC, NULL, 0, "Unknown data", HFILL }},
5010
5011         };
5012
5013
5014         static hf_register_info hf_gtpv1[] = {
5015
5016         { &hf_gtpv1_flags,              { "Flags",              "gtpv1.flags",                  FT_UINT8,       BASE_HEX, NULL, 0, "Ver/PT/Spare/E/S/PN", HFILL }},
5017         { &hf_gtpv1_flags_ver,          { "Version",            "gtpv1.flags.version",          FT_UINT8,       BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
5018         { &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 }},
5019         { &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 }},
5020         { &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 }},
5021         { &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 }},
5022         { &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 }},
5023         { &hf_gtpv1_message_type,               { "Message Type",       "gtpv1.message",                FT_UINT8,       BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
5024         { &hf_gtpv1_length,             { "Length",             "gtpv1.length",                 FT_UINT16,      BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
5025         { &hf_gtpv1_seq_number,         { "Sequence Number",    "gtpv1.seq_number",             FT_UINT16,      BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
5026         { &hf_gtpv1_teid,                       { "TEID",               "gtpv1.teid",                   FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier", HFILL }},
5027         { &hf_gtpv1_npdu_number,                { "N-PDU Number",       "gtpv1.npdu_number",            FT_UINT8,       BASE_HEX, NULL, 0, "N-PDU Number", HFILL }},
5028         { &hf_gtpv1_next,                       { "Next extension header type", "gtpv1.next",           FT_UINT8,       BASE_HEX, NULL, 0, "Next Extension Header Type", HFILL }},
5029         { &hf_gtpv1_cause,              { "Cause ",             "gtpv1.cause",                  FT_UINT8,       BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
5030         { &hf_gtpv1_imsi,                       { "IMSI",               "gtpv1.imsi",                   FT_STRING,      BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
5031         { &hf_gtpv1_rai_mcc,            { "MCC",                "gtpv1.mcc",                    FT_UINT16,      BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
5032         { &hf_gtpv1_rai_mnc,            { "MNC",                "gtpv1.mnc",                    FT_UINT8,       BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
5033         { &hf_gtpv1_rai_rac,            { "RAC",                "gtpv1.rac",                    FT_UINT8,       BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
5034         { &hf_gtpv1_rai_lac,            { "LAC",                "gtpv1.lac",                    FT_UINT16,      BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
5035         { &hf_gtpv1_tlli,                       { "TLLI",               "gtpv1.tlli",                   FT_UINT32,      BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
5036         { &hf_gtpv1_ptmsi,              { "P-TMSI",             "gtpv1.ptmsi",                  FT_UINT32,      BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
5037         { &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 }},
5038         { &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 }},
5039         { &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 }},
5040         { &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 }},
5041         { &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 }},
5042         { &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 }},
5043         { &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 }},
5044         { &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 }},
5045         { &hf_gtpv1_reorder,            { "Reordering required","gtpv1.reorder",                FT_BOOLEAN,     BASE_NONE,NULL, 0, "Reordering required", HFILL }},
5046         { &hf_gtpv1_map_cause,          { "MAP cause",          "gtpv1.map_cause",              FT_UINT8,       BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
5047         { &hf_gtpv1_ptmsi_sig,          { "P-TMSI Signature",   "gtpv1.ptmsi_sig",              FT_UINT24,      BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
5048         { &hf_gtpv1_ms_valid,           { "MS validated",       "gtpv1.ms_valid",               FT_BOOLEAN,     BASE_NONE,NULL, 0, "MS validated", HFILL }},
5049         { &hf_gtpv1_recovery,           { "Recovery",           "gtpv1.recovery",               FT_UINT8,       BASE_DEC, NULL, 0, "Restart counter", HFILL }},
5050         { &hf_gtpv1_sel_mode,           { "Selection Mode",     "gtpv1.sel_mode",               FT_UINT8,       BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
5051         { &hf_gtpv1_teid_data,          { "TEID Data I",        "gtpv1.teid_data",              FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data I", HFILL }},
5052         { &hf_gtpv1_teid_cp,            { "TEID Control Plane", "gtpv1.teid_cp",                FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Control Plane", HFILL }},
5053         { &hf_gtpv1_nsapi,              { "NSAPI",              "gtpv1.nsapi",                  FT_UINT8,       BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
5054         { &hf_gtpv1_teid_ii,            { "TEID Data II",       "gtpv1.teid_ii",                FT_UINT32,      BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data II", HFILL }},
5055         { &hf_gtpv1_tear_ind,           { "Teardown indication","gtpv1.tear_ind",               FT_BOOLEAN,     BASE_NONE,NULL, 0, "Teardown Indication", HFILL }},
5056         { &hf_gtpv1_ranap_cause,                { "RANAP cause",        "gtpv1.ranap_cause",            FT_UINT8,       BASE_DEC, VALS(ranap_cause_type), 0, "RANAP cause", HFILL }},
5057         { &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 }},
5058         { &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 }},
5059         { &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 }},
5060         { &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 }},
5061         { &hf_gtpv1_rp_sms,             { "Radio Priority SMS", "gtpv1.rp_sms",                 FT_UINT8,       BASE_DEC, NULL, 0, "Radio Priority for MO SMS", HFILL }},
5062         { &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 }},
5063         { &hf_gtpv1_rp_spare,           { "Reserved",           "gtpv1.rp_spare",               FT_UINT8,       BASE_DEC, NULL, GTPv1_EXT_RP_SPARE_MASK, "Spare bit", HFILL }},
5064         { &hf_gtpv1_rp,                 { "Radio Priority",     "gtpv1.rp",                     FT_UINT8,       BASE_DEC, NULL, GTPv1_EXT_RP_MASK, "Radio Priority for uplink tx", HFILL }},
5065         { &hf_gtpv1_pkt_flow_id,                { "Packet Flow ID",     "gtpv1.pkt_flow_id",            FT_UINT8,       BASE_DEC, NULL, 0, "Packet Flow ID", HFILL }},
5066         { &hf_gtpv1_chrg_char_s,                { "Spare",              "gtpv1.chrg_char_s",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_S, "Spare", HFILL }},
5067         { &hf_gtpv1_chrg_char_n,                { "Normal charging",    "gtpv1.chrg_char_n",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_N, "Normal charging", HFILL }},
5068         { &hf_gtpv1_chrg_char_p,                { "Prepaid charging",   "gtpv1.chrg_char_p",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_P, "Prepaid charging", HFILL }},
5069         { &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 }},
5070         { &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 }},
5071         { &hf_gtpv1_chrg_char_r,                { "Reserved",           "gtpv1.chrg_char_r",            FT_UINT8,       BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_R, "Reserved", HFILL }},
5072         { &hf_gtpv1_trace_ref,          { "Trace reference",    "gtpv1.trace_ref",              FT_UINT16,      BASE_HEX, NULL, 0, "Trace reference", HFILL }},
5073         { &hf_gtpv1_trace_type,         { "Trace type",         "gtpv1.trace_type",             FT_UINT16,      BASE_HEX, NULL, 0, "Trace type", HFILL }},
5074         { &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 }},
5075         { &hf_gtpv1_tr_comm,            { "Packet transfer command",    "gtpv1.tr_comm",        FT_UINT8,       BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
5076         { &hf_gtpv1_chrg_id,            { "Charging ID",        "gtpv1.chrg_id",                FT_UINT32,      BASE_HEX, NULL, 0, "Charging ID", HFILL }},
5077         { &hf_gtpv1_user_ipv4,          { "End user address IPv4",      "gtpv1.user_ipv4",      FT_IPv4,        BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
5078         { &hf_gtpv1_user_ipv6,          { "End user address IPv6",      "gtpv1.user_ipv6",      FT_IPv6,        BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
5079         { &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 }},
5080         { &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 }},
5081         { &hf_gtpv1_apn,                        { "APN",                "gtpv1.apn",                    FT_STRING,      BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
5082         { &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 }},
5083         { &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 }},
5084         { &hf_gtpv1_gsn_ipv4,           { "GSN address IPv4",   "gtpv1.gsn_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
5085         { &hf_gtpv1_gsn_ipv6,           { "GSN address IPv6",   "gtpv1.gsn_ipv6",               FT_IPv6,        BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
5086         { &hf_gtpv1_msisdn,             { "MSISDN",             "gtpv1.msisdn",                 FT_STRING,      BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
5087         { &hf_gtpv1_qos_al_ret_priority,        { "Allocation/Retention priority ","gtpv1.qos_al_ret_priority",         FT_UINT8,       BASE_DEC, NULL, 0, "Allocation/Retention Priority", HFILL }},
5088         { &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 }},
5089         { &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 }},
5090         { &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 }},
5091         { &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 }},
5092         { &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 }},
5093         { &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 }},
5094         { &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 }},
5095         { &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 }},
5096         { &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 }},
5097         { &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 }},
5098         { &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 }},
5099         { &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 }},
5100         { &hf_gtpv1_rnc_ipv4,           { "RNC address IPv4",   "gtpv1.rnc_ipv4",               FT_IPv4,        BASE_DEC, NULL, 0, "Radio Network Controller address IPv4", HFILL }},
5101         { &hf_gtpv1_rnc_ipv6,           { "RNC address IPv6",   "gtpv1.rnc_ipv6",               FT_IPv6,        BASE_HEX, NULL, 0, "Radio Network Controller address IPv6", HFILL }},
5102         { &hf_gtpv1_chrg_ipv4,          { "CG address IPv4",    "gtpv1.chrg_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
5103         { &hf_gtpv1_chrg_ipv6,          { "CG address IPv6",    "gtpv1.chrg_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
5104         { &hf_gtpv1_node_ipv4,          { "Node address IPv4",  "gtpv1.node_ipv4",              FT_IPv4,        BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
5105         { &hf_gtpv1_node_ipv6,          { "Node address IPv6",  "gtpv1.node_ipv6",              FT_IPv6,        BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
5106         { &hf_gtpv1_ext_id,             { "Extensio Identifier","gtpv1.ext_id",                 FT_UINT16,      BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
5107         { &hf_gtpv1_ext_val,            { "Extension Value",    "gtpv1.ext_val",                FT_STRING,      BASE_DEC, NULL, 0, "Extension Value", HFILL }},
5108         { &hf_gtpv1_unknown,            { "Unknown data (length)",      "gtpv1.unknown",        FT_UINT16,      BASE_DEC, NULL, 0, "Unknown data", HFILL }},
5109
5110         };
5111
5112         static gint *ett_gtp_array[] = {
5113                 &ett_gtp,
5114                 &ett_gtp_flags,
5115                 &ett_gtp_ext,
5116                 &ett_gtp_rai,
5117                 &ett_gtp_qos,
5118                 &ett_gtp_auth_tri,
5119                 &ett_gtp_flow_ii,
5120                 &ett_gtp_rab_cntxt,
5121                 &ett_gtp_rp,
5122                 &ett_gtp_pkt_flow_id,
5123                 &ett_gtp_chrg_char,
5124                 &ett_gtp_user,
5125                 &ett_gtp_mm,
5126                 &ett_gtp_trip,
5127                 &ett_gtp_quint,
5128                 &ett_gtp_pdp,
5129                 &ett_gtp_apn,
5130                 &ett_gtp_proto,
5131                 &ett_gtp_gsn_addr,
5132                 &ett_gtp_tft,
5133                 &ett_gtp_tft_pf,
5134                 &ett_gtp_rab_setup,
5135                 &ett_gtp_hdr_list,
5136                 &ett_gtp_chrg_addr,
5137                 &ett_gtp_node_addr,
5138                 &ett_gtp_rel_pack,
5139                 &ett_gtp_can_pack,
5140                 &ett_gtp_data_resp,
5141                 &ett_gtp_priv_ext,
5142         };
5143
5144         module_t        *gtp_module;
5145
5146         static enum_val_t gtpv0_cdr_options[] = {
5147                 { "GSM 12.15",  0 },
5148                 { "Nokia CDR",  1 },
5149                 { "None",       2 },
5150                 { NULL,         -1 }
5151         };
5152
5153         proto_gtpv0 = proto_register_protocol("GPRS Tunnelling Protocol v0", "GTPv0", "gtpv0");
5154         proto_register_field_array(proto_gtpv0, hf_gtpv0, array_length(hf_gtpv0));
5155         proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
5156
5157         proto_gtpv1 = proto_register_protocol("GPRS Tunnelling Protocol v1", "GTPv1", "gtpv1");
5158         proto_register_field_array(proto_gtpv1, hf_gtpv1, array_length(hf_gtpv1));
5159         proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
5160
5161         gtp_module = prefs_register_protocol(proto_gtpv0, proto_reg_handoff_gtp);
5162
5163         prefs_register_uint_preference(gtp_module, "gtpv0_port", "GTPv0 port ", "GTPv0 port (default 3386)", 10, &g_gtpv0_port);
5164         prefs_register_uint_preference(gtp_module, "gtpv1c_port", "GTPv1 control plane (GTP-C) port ", "GTPv1 control plane port (default 2123)", 10, &g_gtpv1c_port);
5165         prefs_register_uint_preference(gtp_module, "gtpv1u_port", "GTPv1 user plane (GTP-U) port ", "GTPv1 user plane port (default 2152)", 10, &g_gtpv1u_port);
5166         prefs_register_bool_preference(gtp_module, "gtp_dissect_tpdu", "Dissect T-PDU ", "Dissect T-PDU", &gtp_tpdu);
5167         prefs_register_enum_preference(gtp_module, "gtpv0_dissect_cdr_as", "Dissect GTP'v0 CDRs as ", "Dissect GTP'v0 CDRs as", &gtpv0_cdr_as, gtpv0_cdr_options, FALSE);
5168         prefs_register_bool_preference(gtp_module, "gtpv0_check_etsi", "Compare GTPv0 order with ETSI ", "GTPv0 ETSI order", &gtpv0_etsi_order);
5169         prefs_register_bool_preference(gtp_module, "gtpv1_check_etsi", "Compare GTPv1 order with ETSI ", "GTPv1 ETSI order", &gtpv1_etsi_order);
5170         prefs_register_bool_preference(gtp_module, "ppp_reorder", "Reorder & dissect PPP in Protocol conf. options", "PPP reorder & dissect", &ppp_reorder);
5171
5172         register_dissector("gtpv0", dissect_gtpv0, proto_gtpv0);
5173         register_dissector("gtpv1", dissect_gtpv1, proto_gtpv1);
5174
5175 }
5176
5177 void
5178 proto_reg_handoff_gtp(void)
5179 {
5180         static int Initialized = FALSE;
5181         static dissector_handle_t gtpv0_handle;
5182         static dissector_handle_t gtpv1_handle;
5183
5184         if (!Initialized) {
5185
5186                 gtpv0_handle = find_dissector("gtpv0");
5187
5188                 gtpv1_handle = find_dissector("gtpv1");
5189
5190                 Initialized = TRUE;
5191
5192         } else {
5193
5194                 dissector_delete("udp.port", gtpv0_port, gtpv0_handle);
5195                 dissector_delete("tcp.port", gtpv0_port, gtpv0_handle);
5196
5197                 dissector_delete("udp.port", gtpv1c_port, gtpv1_handle);
5198                 dissector_delete("tcp.port", gtpv1c_port, gtpv1_handle);
5199                 dissector_delete("udp.port", gtpv1u_port, gtpv1_handle);
5200                 dissector_delete("tcp.port", gtpv1u_port, gtpv1_handle);
5201         }
5202
5203         gtpv0_port = g_gtpv0_port;
5204         gtpv1c_port = g_gtpv1c_port;
5205         gtpv1u_port = g_gtpv1u_port;
5206
5207         /* GTP v0 */
5208
5209         dissector_add("udp.port", g_gtpv0_port, gtpv0_handle);
5210         dissector_add("tcp.port", g_gtpv0_port, gtpv0_handle);
5211
5212         /* GTP v1 */
5213
5214         dissector_add("udp.port", g_gtpv1c_port, gtpv1_handle);
5215         dissector_add("tcp.port", g_gtpv1c_port, gtpv1_handle);
5216         dissector_add("udp.port", g_gtpv1u_port, gtpv1_handle);
5217         dissector_add("tcp.port", g_gtpv1u_port, gtpv1_handle);
5218
5219         ip_handle = find_dissector("ip");
5220         ppp_handle = find_dissector("ppp");
5221 }