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wireshark/packet-gtp.c
Guy Harris e708872638 Thou Shalt Not Ever Make An Offset An 8-bit Quantity If Thou Art 
Comparing It Against An 8-bit Or Longer Length To Make Sure It Doesn't
Go Past The Length, because if the length is 255, it can't ever go past
it as it'll overflow if it does.

svn path=/trunk/; revision=7093
2003-02-07 19:57:19 +00:00

5417 lines
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/* packet-gtp.c
*
* Routines for GTP dissection
* Copyright 2001, Michal Melerowicz <michal.melerowicz@nokia.com>
* Nicolas Balkota <balkota@mac.com>
*
* $Id: packet-gtp.c,v 1.53 2003/02/07 19:57:19 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#include "packet-gtp.h"
#include "packet-ipv6.h"
#include "packet-ppp.h"
#include "prefs.h"
/*
* All data related to GTP v0 (GPRS) uses "gtpv0" or "GTPv0",
* all data related to GTP v1 (UMTS) uses "gtpv1" or "GTPv1",
* if there is any gtp alone statement it means that this data is common
* for both: GPRS and UMTS
*/
#define GTPv0_PORT 3386
#define GTPv1C_PORT 2123 /* 3G Control PDU */
#define GTPv1U_PORT 2152 /* 3G T-PDU */
#define GTPv0_HDR_LENGTH 20
#define GTPv1_HDR_LENGTH 12
#define GTP_PRIME_HDR_LENGTH 6
/* for function checking compliance with ETSI */
#define GTP_MANDATORY 1
#define GTP_OPTIONAL 2
#define GTP_CONDITIONAL 4
static int g_gtpv0_port = GTPv0_PORT;
static int g_gtpv1c_port = GTPv1C_PORT;
static int g_gtpv1u_port = GTPv1U_PORT;
void proto_reg_handoff_gtp(void);
static int proto_gtp = -1;
static int proto_gtpv0 = -1;
static int proto_gtpv1 = -1;
static int hf_gtpv0_flags = -1;
static int hf_gtpv0_flags_ver = -1;
static int hf_gtpv0_flags_pt = -1;
static int hf_gtpv0_flags_spare = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_flags_e = -1;
static int hf_gtpv0_flags_s = -1;
static int hf_gtpv0_flags_pn = -1;
#endif
static int hf_gtpv0_flags_snn = -1;
static int hf_gtpv0_message_type = -1;
static int hf_gtpv0_length = -1;
static int hf_gtpv0_seq_number = -1;
static int hf_gtpv0_flow_label = -1;
static int hf_gtpv0_sndcp_number = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_npdu_number = -1;
#endif
static int hf_gtpv0_tid = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_teid = -1;
static int hf_gtpv0_next = -1;
#endif
static int hf_gtpv0_cause = -1;
static int hf_gtpv0_imsi = -1;
static int hf_gtpv0_rai_mcc = -1;
static int hf_gtpv0_rai_mnc = -1;
static int hf_gtpv0_rai_rac = -1;
static int hf_gtpv0_rai_lac = -1;
static int hf_gtpv0_tlli = -1;
static int hf_gtpv0_ptmsi = -1;
static int hf_gtpv0_qos_spare1 = -1;
static int hf_gtpv0_qos_delay = -1;
static int hf_gtpv0_qos_mean = -1;
static int hf_gtpv0_qos_peak = -1;
static int hf_gtpv0_qos_spare2 = -1;
static int hf_gtpv0_qos_precedence = -1;
static int hf_gtpv0_qos_spare3 = -1;
static int hf_gtpv0_qos_reliability = -1;
static int hf_gtpv0_reorder = -1;
static int hf_gtpv0_map_cause = -1;
static int hf_gtpv0_ptmsi_sig = -1;
static int hf_gtpv0_ms_valid = -1;
static int hf_gtpv0_recovery = -1;
static int hf_gtpv0_sel_mode = -1;
static int hf_gtpv0_ext_flow_label = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_teid_data = -1; /* 3G */
#endif
static int hf_gtpv0_flow_sig = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_teid_cp = -1; /* 3G */
#endif
static int hf_gtpv0_nsapi = -1;
static int hf_gtpv0_flow_ii = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_teid_ii = -1; /* 3G */
#endif
static int hf_gtpv0_ms_reason = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_tear_ind = -1; /* 3G */
static int hf_gtpv0_ranap_cause = -1; /* 3G */
static int hf_gtpv0_rab_gtpu_dn = -1; /* 3G */
static int hf_gtpv0_rab_gtpu_up = -1; /* 3G */
static int hf_gtpv0_rab_pdu_dn = -1; /* 3G */
static int hf_gtpv0_rab_pdu_up = -1; /* 3G */
static int hf_gtpv0_rp_sms = -1; /* 3G */
static int hf_gtpv0_rp_spare = -1; /* 3G */
static int hf_gtpv0_rp_nsapi = -1; /* 3G */
static int hf_gtpv0_rp = -1; /* 3G */
static int hf_gtpv0_pkt_flow_id = -1; /* 3G */
static int hf_gtpv0_chrg_char_s = -1; /* 3G */
static int hf_gtpv0_chrg_char_n = -1; /* 3G */
static int hf_gtpv0_chrg_char_p = -1; /* 3G */
static int hf_gtpv0_chrg_char_f = -1; /* 3G */
static int hf_gtpv0_chrg_char_h = -1; /* 3G */
static int hf_gtpv0_chrg_char_r = -1; /* 3G */
static int hf_gtpv0_trace_ref = -1; /* 3G */
static int hf_gtpv0_trace_type = -1; /* 3G */
#endif
static int hf_gtpv0_tr_comm = -1; /* charging */
static int hf_gtpv0_chrg_id = -1;
static int hf_gtpv0_user_ipv4 = -1;
static int hf_gtpv0_user_ipv6 = -1;
static int hf_gtpv0_user_addr_pdp_org = -1;
static int hf_gtpv0_user_addr_pdp_type = -1;
static int hf_gtpv0_apn = -1;
static int hf_gtpv0_gsn_ipv4 = -1;
static int hf_gtpv0_gsn_ipv6 = -1;
static int hf_gtpv0_gsn_addr_type = -1;
static int hf_gtpv0_gsn_addr_len = -1;
static int hf_gtpv0_msisdn = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv0_qos_al_ret_priority = -1;
static int hf_gtpv0_qos_traf_class = -1;
static int hf_gtpv0_qos_del_order = -1;
static int hf_gtpv0_qos_del_err_sdu = -1;
static int hf_gtpv0_qos_max_sdu_size = -1;
static int hf_gtpv0_qos_max_ul = -1;
static int hf_gtpv0_qos_max_dl = -1;
static int hf_gtpv0_qos_res_ber = -1;
static int hf_gtpv0_qos_sdu_err_ratio = -1;
static int hf_gtpv0_qos_trans_delay = -1;
static int hf_gtpv0_qos_traf_handl_prio = -1;
static int hf_gtpv0_qos_guar_ul = -1;
static int hf_gtpv0_qos_guar_dl = -1;
static int hf_gtpv0_rnc_ipv4 = -1;
static int hf_gtpv0_rnc_ipv6 = -1;
#endif
static int hf_gtpv0_chrg_ipv4 = -1;
static int hf_gtpv0_chrg_ipv6 = -1;
static int hf_gtpv0_node_ipv4 = -1;
static int hf_gtpv0_node_ipv6 = -1;
static int hf_gtpv0_ext_id = -1;
static int hf_gtpv0_ext_val = -1;
static int hf_gtpv0_unknown = -1;
static int hf_gtpv1_flags = -1;
static int hf_gtpv1_flags_ver = -1;
static int hf_gtpv1_flags_pt = -1;
static int hf_gtpv1_flags_spare = -1;
static int hf_gtpv1_flags_e = -1;
static int hf_gtpv1_flags_s = -1;
static int hf_gtpv1_flags_pn = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_flags_snn = -1;
#endif
static int hf_gtpv1_message_type = -1;
static int hf_gtpv1_length = -1;
static int hf_gtpv1_seq_number = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_flow_label = -1;
static int hf_gtpv1_sndcp_number = -1;
#endif
static int hf_gtpv1_npdu_number = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_tid = -1;
#endif
static int hf_gtpv1_teid = -1;
static int hf_gtpv1_next = -1;
static int hf_gtpv1_cause = -1;
static int hf_gtpv1_imsi = -1;
static int hf_gtpv1_rai_mcc = -1;
static int hf_gtpv1_rai_mnc = -1;
static int hf_gtpv1_rai_rac = -1;
static int hf_gtpv1_rai_lac = -1;
static int hf_gtpv1_tlli = -1;
static int hf_gtpv1_ptmsi = -1;
static int hf_gtpv1_qos_spare1 = -1;
static int hf_gtpv1_qos_delay = -1;
static int hf_gtpv1_qos_mean = -1;
static int hf_gtpv1_qos_peak = -1;
static int hf_gtpv1_qos_spare2 = -1;
static int hf_gtpv1_qos_precedence = -1;
static int hf_gtpv1_qos_spare3 = -1;
static int hf_gtpv1_qos_reliability = -1;
static int hf_gtpv1_reorder = -1;
static int hf_gtpv1_map_cause = -1;
static int hf_gtpv1_ptmsi_sig = -1;
static int hf_gtpv1_ms_valid = -1;
static int hf_gtpv1_recovery = -1;
static int hf_gtpv1_sel_mode = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_ext_flow_label = -1;
#endif
static int hf_gtpv1_teid_data = -1; /* 3G */
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_flow_sig = -1;
#endif
static int hf_gtpv1_teid_cp = -1; /* 3G */
static int hf_gtpv1_nsapi = -1;
#ifdef GTP_UNUSED_HANDLES
static int hf_gtpv1_flow_ii = -1;
#endif
static int hf_gtpv1_teid_ii = -1; /* 3G */
static int hf_gtpv1_ms_reason = -1;
static int hf_gtpv1_tear_ind = -1; /* 3G */
static int hf_gtpv1_ranap_cause = -1; /* 3G */
static int hf_gtpv1_rab_gtpu_dn = -1; /* 3G */
static int hf_gtpv1_rab_gtpu_up = -1; /* 3G */
static int hf_gtpv1_rab_pdu_dn = -1; /* 3G */
static int hf_gtpv1_rab_pdu_up = -1; /* 3G */
static int hf_gtpv1_rp_sms = -1; /* 3G */
static int hf_gtpv1_rp_spare = -1; /* 3G */
static int hf_gtpv1_rp_nsapi = -1; /* 3G */
static int hf_gtpv1_rp = -1; /* 3G */
static int hf_gtpv1_pkt_flow_id = -1; /* 3G */
static int hf_gtpv1_chrg_char_s = -1; /* 3G */
static int hf_gtpv1_chrg_char_n = -1; /* 3G */
static int hf_gtpv1_chrg_char_p = -1; /* 3G */
static int hf_gtpv1_chrg_char_f = -1; /* 3G */
static int hf_gtpv1_chrg_char_h = -1; /* 3G */
static int hf_gtpv1_chrg_char_r = -1; /* 3G */
static int hf_gtpv1_trace_ref = -1; /* 3G */
static int hf_gtpv1_trace_type = -1; /* 3G */
static int hf_gtpv1_tr_comm = -1; /* charging */
static int hf_gtpv1_chrg_id = -1;
static int hf_gtpv1_user_ipv4 = -1;
static int hf_gtpv1_user_ipv6 = -1;
static int hf_gtpv1_user_addr_pdp_org = -1;
static int hf_gtpv1_user_addr_pdp_type = -1;
static int hf_gtpv1_apn = -1;
static int hf_gtpv1_gsn_ipv4 = -1;
static int hf_gtpv1_gsn_ipv6 = -1;
static int hf_gtpv1_gsn_addr_type = -1;
static int hf_gtpv1_gsn_addr_len = -1;
static int hf_gtpv1_msisdn = -1;
static int hf_gtpv1_qos_al_ret_priority = -1;
static int hf_gtpv1_qos_traf_class = -1;
static int hf_gtpv1_qos_del_order = -1;
static int hf_gtpv1_qos_del_err_sdu = -1;
static int hf_gtpv1_qos_max_sdu_size = -1;
static int hf_gtpv1_qos_max_ul = -1;
static int hf_gtpv1_qos_max_dl = -1;
static int hf_gtpv1_qos_res_ber = -1;
static int hf_gtpv1_qos_sdu_err_ratio = -1;
static int hf_gtpv1_qos_trans_delay = -1;
static int hf_gtpv1_qos_traf_handl_prio = -1;
static int hf_gtpv1_qos_guar_ul = -1;
static int hf_gtpv1_qos_guar_dl = -1;
static int hf_gtpv1_tft_code = -1;
static int hf_gtpv1_tft_spare = -1;
static int hf_gtpv1_tft_number = -1;
static int hf_gtpv1_tft_eval = -1;
static int hf_gtpv1_rnc_ipv4 = -1;
static int hf_gtpv1_rnc_ipv6 = -1;
static int hf_gtpv1_chrg_ipv4 = -1;
static int hf_gtpv1_chrg_ipv6 = -1;
static int hf_gtpv1_node_ipv4 = -1;
static int hf_gtpv1_node_ipv6 = -1;
static int hf_gtpv1_ext_id = -1;
static int hf_gtpv1_ext_val = -1;
static int hf_gtpv1_unknown = -1;
/* Initialize the subtree pointers */
static gint ett_gtp = -1;
static gint ett_gtp_flags = -1;
static gint ett_gtp_ext = -1;
static gint ett_gtp_rai = -1;
static gint ett_gtp_qos = -1;
static gint ett_gtp_auth_tri = -1;
static gint ett_gtp_flow_ii = -1;
static gint ett_gtp_rab_cntxt = -1;
static gint ett_gtp_rp = -1;
static gint ett_gtp_pkt_flow_id = -1;
static gint ett_gtp_chrg_char = -1;
static gint ett_gtp_user = -1;
static gint ett_gtp_mm = -1;
static gint ett_gtp_trip = -1;
static gint ett_gtp_quint = -1;
static gint ett_gtp_pdp = -1;
static gint ett_gtp_apn = -1;
static gint ett_gtp_proto = -1;
static gint ett_gtp_gsn_addr = -1;
static gint ett_gtp_tft = -1;
static gint ett_gtp_tft_pf = -1;
static gint ett_gtp_tft_flags = -1;
static gint ett_gtp_rab_setup = -1;
static gint ett_gtp_hdr_list = -1;
static gint ett_gtp_chrg_addr = -1;
static gint ett_gtp_node_addr = -1;
static gint ett_gtp_rel_pack = -1;
static gint ett_gtp_can_pack = -1;
static gint ett_gtp_data_resp = -1;
static gint ett_gtp_priv_ext = -1;
/* Definition of user preferences panel fields */
#define DONT_DISSECT_CDRS 2
static gboolean gtp_tpdu = TRUE;
static gint gtpv0_cdr_as = DONT_DISSECT_CDRS; /* 2 = do not dissect */
static gboolean gtpv0_etsi_order = FALSE;
static gboolean gtpv1_etsi_order = FALSE;
static int gtpv0_port = 0;
static int gtpv1c_port = 0;
static int gtpv1u_port = 0;
/* Definition of flags masks */
#define GTP_VER_MASK 0xE0
static const value_string ver_types[] = {
{ 0, "GTP release 97/98 version" },
{ 1, "GTP release 99 version" },
{ 2, "None" },
{ 3, "None" },
{ 4, "None" },
{ 5, "None" },
{ 6, "None" },
{ 7, "None" },
{ 0, NULL }
};
#define GTP_PT_MASK 0x10
#define GTP_SPARE_MASK 0x0E
#define GTPv1_SPARE_MASK 0x08
#define GTPv1_E_MASK 0x04
#define GTPv1_S_MASK 0x02
#define GTP_SNN_MASK 0x01
#define GTPv1_PN_MASK 0x01
/* Definition of 3G charging characteristics masks */
#define GTP_MASK_CHRG_CHAR_S 0xF000
#define GTP_MASK_CHRG_CHAR_N 0x0800
#define GTP_MASK_CHRG_CHAR_P 0x0400
#define GTP_MASK_CHRG_CHAR_F 0x0200
#define GTP_MASK_CHRG_CHAR_H 0x0100
#define GTP_MASK_CHRG_CHAR_R 0x00FF
/* Traffic Flow Templates mask */
#define GTPv1_TFT_CODE_MASK 0xE0
#define GTPv1_TFT_SPARE_MASK 0x10
#define GTPv1_TFT_NUMBER_MASK 0x0F
/* Definition of GSN Address masks */
#define GTP_EXT_GSN_ADDR_TYPE_MASK 0xC0
#define GTP_EXT_GSN_ADDR_LEN_MASK 0x3F
/* Definition of QoS masks */
#define GTP_EXT_QOS_SPARE1_MASK 0xC0
#define GTP_EXT_QOS_DELAY_MASK 0x38
#define GTP_EXT_QOS_RELIABILITY_MASK 0x07
#define GTP_EXT_QOS_PEAK_MASK 0xF0
#define GTP_EXT_QOS_SPARE2_MASK 0x08
#define GTP_EXT_QOS_PRECEDENCE_MASK 0x07
#define GTP_EXT_QOS_SPARE3_MASK 0xE0
#define GTP_EXT_QOS_MEAN_MASK 0x1F
#define GTP_EXT_QOS_TRAF_CLASS_MASK 0xE0
#define GTP_EXT_QOS_DEL_ORDER_MASK 0x18
#define GTP_EXT_QOS_DEL_ERR_SDU_MASK 0x07
#define GTP_EXT_QOS_RES_BER_MASK 0xF0
#define GTP_EXT_QOS_SDU_ERR_RATIO_MASK 0x0F
#define GTP_EXT_QOS_TRANS_DELAY_MASK 0xFC
#define GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK 0x03
/* Definition of Radio Priority's masks */
#define GTPv1_EXT_RP_NSAPI_MASK 0xF0
#define GTPv1_EXT_RP_SPARE_MASK 0x08
#define GTPv1_EXT_RP_MASK 0x07
/* definitions of GTP messages */
#define GTP_MSG_UNKNOWN 0x00
#define GTP_MSG_ECHO_REQ 0x01
#define GTP_MSG_ECHO_RESP 0x02
#define GTP_MSG_VER_NOT_SUPP 0x03
#define GTP_MSG_NODE_ALIVE_REQ 0x04
#define GTP_MSG_NODE_ALIVE_RESP 0x05
#define GTP_MSG_REDIR_REQ 0x06
#define GTP_MSG_REDIR_RESP 0x07
#define GTP_MSG_CREATE_PDP_REQ 0x10
#define GTP_MSG_CREATE_PDP_RESP 0x11
#define GTP_MSG_UPDATE_PDP_REQ 0x12
#define GTP_MSG_UPDATE_PDP_RESP 0x13
#define GTP_MSG_DELETE_PDP_REQ 0x14
#define GTP_MSG_DELETE_PDP_RESP 0x15
#define GTP_MSG_CREATE_AA_PDP_REQ 0x16 /* 2G */
#define GTP_MSG_CREATE_AA_PDP_RESP 0x17 /* 2G */
#define GTP_MSG_DELETE_AA_PDP_REQ 0x18 /* 2G */
#define GTP_MSG_DELETE_AA_PDP_RESP 0x19 /* 2G */
#define GTP_MSG_ERR_IND 0x1A
#define GTP_MSG_PDU_NOTIFY_REQ 0x1B
#define GTP_MSG_PDU_NOTIFY_RESP 0x1C
#define GTP_MSG_PDU_NOTIFY_REJ_REQ 0x1D
#define GTP_MSG_PDU_NOTIFY_REJ_RESP 0x1E
#define GTP_MSG_SUPP_EXT_HDR 0x1F
#define GTP_MSG_SEND_ROUT_INFO_REQ 0x20
#define GTP_MSG_SEND_ROUT_INFO_RESP 0x21
#define GTP_MSG_FAIL_REP_REQ 0x22
#define GTP_MSG_FAIL_REP_RESP 0x23
#define GTP_MSG_MS_PRESENT_REQ 0x24
#define GTP_MSG_MS_PRESENT_RESP 0x25
#define GTP_MSG_IDENT_REQ 0x30
#define GTP_MSG_IDENT_RESP 0x31
#define GTP_MSG_SGSN_CNTXT_REQ 0x32
#define GTP_MSG_SGSN_CNTXT_RESP 0x33
#define GTP_MSG_SGSN_CNTXT_ACK 0x34
#define GTP_MSG_FORW_RELOC_REQ 0x35
#define GTP_MSG_FORW_RELOC_RESP 0x36
#define GTP_MSG_FORW_RELOC_COMP 0x37
#define GTP_MSG_RELOC_CANCEL_REQ 0x38
#define GTP_MSG_RELOC_CANCEL_RESP 0x39
#define GTP_MSG_FORW_SRNS_CNTXT 0x3A
#define GTP_MSG_FORW_RELOC_ACK 0x3B
#define GTP_MSG_FORW_SRNS_CNTXT_ACK 0x3C
#define GTP_MSG_DATA_TRANSF_REQ 0xF0
#define GTP_MSG_DATA_TRANSF_RESP 0xF1
#define GTP_MSG_TPDU 0xFF
static const value_string message_type[] = {
{ GTP_MSG_UNKNOWN, "For future use" },
{ GTP_MSG_ECHO_REQ, "Echo request" },
{ GTP_MSG_ECHO_RESP, "Echo response" },
{ GTP_MSG_VER_NOT_SUPP, "Version not supported" },
{ GTP_MSG_NODE_ALIVE_REQ, "Node alive request" },
{ GTP_MSG_NODE_ALIVE_RESP, "Node alive response" },
{ GTP_MSG_REDIR_REQ, "Redirection request" },
{ GTP_MSG_REDIR_RESP, "Redirection response" },
{ GTP_MSG_CREATE_PDP_REQ, "Create PDP context request" },
{ GTP_MSG_CREATE_PDP_RESP, "Create PDP context response" },
{ GTP_MSG_UPDATE_PDP_REQ, "Update PDP context request" },
{ GTP_MSG_UPDATE_PDP_RESP, "Update PDP context response" },
{ GTP_MSG_DELETE_PDP_REQ, "Delete PDP context request" },
{ GTP_MSG_DELETE_PDP_RESP, "Delete PDP context response" },
{ GTP_MSG_CREATE_AA_PDP_REQ, "Create AA PDP Context Request" },
{ GTP_MSG_CREATE_AA_PDP_RESP, "Create AA PDP Context Response" },
{ GTP_MSG_DELETE_AA_PDP_REQ, "Delete AA PDP Context Request" },
{ GTP_MSG_DELETE_AA_PDP_RESP, "Delete AA PDP Context Response" },
{ GTP_MSG_ERR_IND, "Error indication" },
{ GTP_MSG_PDU_NOTIFY_REQ, "PDU notification request" },
{ GTP_MSG_PDU_NOTIFY_RESP, "PDU notification response" },
{ GTP_MSG_PDU_NOTIFY_REJ_REQ, "PDU notification reject request" },
{ GTP_MSG_PDU_NOTIFY_REJ_RESP, "PDU notification reject response" },
{ GTP_MSG_SUPP_EXT_HDR, "Supported extension header notification" },
{ GTP_MSG_SEND_ROUT_INFO_REQ, "Send routing information for GPRS request" },
{ GTP_MSG_SEND_ROUT_INFO_RESP, "Send routing information for GPRS response" },
{ GTP_MSG_FAIL_REP_REQ, "Failure report request" },
{ GTP_MSG_FAIL_REP_RESP, "Failure report response" },
{ GTP_MSG_MS_PRESENT_REQ, "Note MS GPRS present request" },
{ GTP_MSG_MS_PRESENT_RESP, "Note MS GPRS present response" },
{ GTP_MSG_IDENT_REQ, "Identification request" },
{ GTP_MSG_IDENT_RESP, "Identification response" },
{ GTP_MSG_SGSN_CNTXT_REQ, "SGSN context request" },
{ GTP_MSG_SGSN_CNTXT_RESP, "SGSN context response" },
{ GTP_MSG_SGSN_CNTXT_ACK, "SGSN context acknowledgement" },
{ GTP_MSG_FORW_RELOC_REQ, "Forward relocation request" },
{ GTP_MSG_FORW_RELOC_RESP, "Forward relocation response" },
{ GTP_MSG_FORW_RELOC_COMP, "Forward relocation complete" },
{ GTP_MSG_RELOC_CANCEL_REQ, "Relocation cancel request" },
{ GTP_MSG_RELOC_CANCEL_RESP, "Relocation cancel response" },
{ GTP_MSG_FORW_SRNS_CNTXT, "Forward SRNS context" },
{ GTP_MSG_FORW_RELOC_ACK, "Forward relocation complete acknowledge" },
{ GTP_MSG_FORW_SRNS_CNTXT_ACK, "Forward SRNS context acknowledge" },
{ GTP_MSG_DATA_TRANSF_REQ, "Data record transfer request" },
{ GTP_MSG_DATA_TRANSF_RESP, "Data record transfer response" },
{ GTP_MSG_TPDU, "T-PDU" },
{ 0, NULL }
};
/* definitions of fields in extension header */
#define GTP_EXT_CAUSE 0x01
#define GTP_EXT_IMSI 0x02
#define GTP_EXT_RAI 0x03
#define GTP_EXT_TLLI 0x04
#define GTP_EXT_PTMSI 0x05
#define GTP_EXT_QOS_GPRS 0x06
#define GTP_EXT_REORDER 0x08
#define GTP_EXT_AUTH_TRI 0x09
#define GTP_EXT_MAP_CAUSE 0x0B
#define GTP_EXT_PTMSI_SIG 0x0C
#define GTP_EXT_MS_VALID 0x0D
#define GTP_EXT_RECOVER 0x0E
#define GTP_EXT_SEL_MODE 0x0F
#define GTP_EXT_16 0x10
#define GTP_EXT_FLOW_LABEL 0x10
#define GTP_EXT_TEID 0x10 /* 0xFF10 3G */
#define GTP_EXT_17 0x11
#define GTP_EXT_FLOW_SIG 0x11
#define GTP_EXT_TEID_CP 0x11 /* 0xFF11 3G */
#define GTP_EXT_18 0x12
#define GTP_EXT_FLOW_II 0x12
#define GTP_EXT_TEID_II 0x12 /* 0xFF12 3G*/
#define GTP_EXT_19 0x13
#define GTP_EXT_MS_REASON 0x13 /* same as 0x1D GTPv1_EXT_MS_REASON */
#define GTP_EXT_TEAR_IND 0x13 /* 0xFF13 3G*/
#define GTP_EXT_NSAPI 0x14 /* 3G */
#define GTP_EXT_RANAP_CAUSE 0x15 /* 3G */
#define GTP_EXT_RAB_CNTXT 0x16 /* 3G */
#define GTP_EXT_RP_SMS 0x17 /* 3G */
#define GTP_EXT_RP 0x18 /* 3G */
#define GTP_EXT_PKT_FLOW_ID 0x19 /* 3G */
#define GTP_EXT_CHRG_CHAR 0x1A /* 3G */
#define GTP_EXT_TRACE_REF 0x1B /* 3G */
#define GTP_EXT_TRACE_TYPE 0x1C /* 3G */
#define GTPv1_EXT_MS_REASON 0x1D /* 3G */
#define GTP_EXT_TR_COMM 0x7E /* charging */
#define GTP_EXT_CHRG_ID 0x7F
#define GTP_EXT_USER_ADDR 0x80
#define GTP_EXT_MM_CNTXT 0x81
#define GTP_EXT_PDP_CNTXT 0x82
#define GTP_EXT_APN 0x83
#define GTP_EXT_PROTO_CONF 0x84
#define GTP_EXT_GSN_ADDR 0x85
#define GTP_EXT_MSISDN 0x86
#define GTP_EXT_QOS_UMTS 0x87 /* 3G */
#define GTP_EXT_AUTH_QUI 0x88 /* 3G */
#define GTP_EXT_TFT 0x89 /* 3G */
#define GTP_EXT_TARGET_ID 0x8A /* 3G */
#define GTP_EXT_UTRAN_CONT 0x8B /* 3G */
#define GTP_EXT_RAB_SETUP 0x8C /* 3G */
#define GTP_EXT_HDR_LIST 0x8D /* 3G */
#define GTP_EXT_TRIGGER_ID 0x8E /* 3G */
#define GTP_EXT_OMC_ID 0x8F /* 3G */
#define GTP_EXT_REL_PACK 0xF9 /* charging */
#define GTP_EXT_CAN_PACK 0xFA /* charging */
#define GTP_EXT_CHRG_ADDR 0xFB
#define GTP_EXT_DATA_REQ 0xFC /* charging */
#define GTP_EXT_DATA_RESP 0xFD /* charging */
#define GTP_EXT_NODE_ADDR 0xFE /* charging */
#define GTP_EXT_PRIV_EXT 0xFF
static const value_string gtp_val[] = {
{ GTP_EXT_CAUSE, "Cause of operation" },
{ GTP_EXT_IMSI, "IMSI" },
{ GTP_EXT_RAI, "Routing Area Identity" },
{ GTP_EXT_TLLI, "Temporary Logical Link Identity" },
{ GTP_EXT_PTMSI, "Packet TMSI" },
{ GTP_EXT_QOS_GPRS, "Quality of Service" },
{ GTP_EXT_REORDER, "Reorder required" },
{ GTP_EXT_AUTH_TRI, "Authentication triplets" },
{ GTP_EXT_MAP_CAUSE, "MAP cause" },
{ GTP_EXT_PTMSI_SIG, "P-TMSI signature" },
{ GTP_EXT_MS_VALID, "MS validated" },
{ GTP_EXT_RECOVER, "Recovery" },
{ GTP_EXT_SEL_MODE, "Selection mode" },
{ GTP_EXT_16, "Flow label data I" },
{ GTP_EXT_FLOW_LABEL, "Flow label data I" },
{ GTP_EXT_TEID, "Tunnel Endpoint Identifier Data I" }, /* 3G */
{ GTP_EXT_17, "Flow label signalling" },
{ GTP_EXT_FLOW_SIG, "Flow label signalling" },
{ GTP_EXT_TEID_CP, "Tunnel Endpoint Identifier Data Control Plane" }, /* 3G */
{ GTP_EXT_18, "Flow label data II" },
{ GTP_EXT_FLOW_II, "Flow label data II" },
{ GTP_EXT_TEID_II, "Tunnel Endpoint Identifier Data II" }, /* 3G */
{ GTP_EXT_19, "MS not reachable reason" },
{ GTP_EXT_MS_REASON, "MS not reachable reason" },
{ GTP_EXT_TEAR_IND, "Teardown ID" }, /* 3G */
{ GTP_EXT_NSAPI, "NSAPI" }, /* 3G */
{ GTP_EXT_RANAP_CAUSE, "RANAP cause" }, /* 3G */
{ GTP_EXT_RAB_CNTXT, "RAB context" }, /* 3G */
{ GTP_EXT_RP_SMS, "Radio Priority for MO SMS" }, /* 3G */
{ GTP_EXT_RP, "Radio Priority" }, /* 3G */
{ GTP_EXT_PKT_FLOW_ID, "Packet Flow ID" }, /* 3G */
{ GTP_EXT_CHRG_CHAR, "Charging characteristics" }, /* 3G */
{ GTP_EXT_TRACE_REF, "Trace references" }, /* 3G */
{ GTP_EXT_TRACE_TYPE, "Trace type" }, /* 3G */
{ GTPv1_EXT_MS_REASON, "MS not reachable reason" }, /* 3G */
{ GTP_EXT_TR_COMM, "Packet transfer command" }, /* charging */
{ GTP_EXT_CHRG_ID, "Charging ID" },
{ GTP_EXT_USER_ADDR, "End user address" },
{ GTP_EXT_MM_CNTXT, "MM context" },
{ GTP_EXT_PDP_CNTXT, "PDP context" },
{ GTP_EXT_APN, "Access Point Name" },
{ GTP_EXT_PROTO_CONF, "Protocol configuration options" },
{ GTP_EXT_GSN_ADDR, "GSN address" },
{ GTP_EXT_MSISDN, "MS international PSTN/ISDN number" },
{ GTP_EXT_QOS_UMTS, "Quality of service (UMTS)" }, /* 3G */
{ GTP_EXT_AUTH_QUI, "Authentication quintuplets" }, /* 3G */
{ GTP_EXT_TFT, "Traffic Flow Template (TFT)" }, /* 3G */
{ GTP_EXT_TARGET_ID, "Target (RNC) identification" }, /* 3G */
{ GTP_EXT_UTRAN_CONT, "UTRAN transparent field" }, /* 3G */
{ GTP_EXT_RAB_SETUP, "RAB setup information" }, /* 3G */
{ GTP_EXT_HDR_LIST, "Extension Header Types List" }, /* 3G */
{ GTP_EXT_TRIGGER_ID, "Trigger Id" }, /* 3G */
{ GTP_EXT_OMC_ID, "OMC Identity" }, /* 3G */
{ GTP_EXT_REL_PACK, "Sequence numbers of released packets IE" }, /* charging */
{ GTP_EXT_CAN_PACK, "Sequence numbers of canceled packets IE" }, /* charging */
{ GTP_EXT_CHRG_ADDR, "Charging Gateway address" },
{ GTP_EXT_DATA_REQ, "Data record packet" }, /* charging */
{ GTP_EXT_DATA_RESP, "Requests responded" }, /* charging */
{ GTP_EXT_NODE_ADDR, "Address of recommended node" }, /* charging */
{ GTP_EXT_PRIV_EXT, "Private Extension" },
{ 0, NULL }
};
/* GPRS: 9.60 v7.6.0, page 37
* UMTS: 29.060 v4.0, page 45
*/
static const value_string cause_type[] = {
{ 0, "Request IMSI" },
{ 1, "Request IMEI" },
{ 2, "Request IMSI and IMEI" },
{ 3, "No identity needed" },
{ 4, "MS refuses" },
{ 5, "MS is not GPRS responding" },
{ 59, "System failure" }, /* charging */
{ 60, "The transmit buffers are becoming full" }, /* charging */
{ 61, "The receive buffers are becoming full" }, /* charging */
{ 62, "Another node is about to go down" }, /* charging */
{ 63, "This node is about to go down" }, /* charging */
{ 128, "Request accepted" },
{ 192, "Non-existent" },
{ 193, "Invalid message format" },
{ 194, "IMSI not known" },
{ 195, "MS is GPRS detached" },
{ 196, "MS is not GPRS responding" },
{ 197, "MS refuses" },
{ 198, "Version not supported" },
{ 199, "No resource available" },
{ 200, "Service not supported" },
{ 201, "Mandatory IE incorrect" },
{ 202, "Mandatory IE missing" },
{ 203, "Optional IE incorrect" },
{ 204, "System failure" },
{ 205, "Roaming restriction" },
{ 206, "P-TMSI signature mismatch" },
{ 207, "GPRS connection suspended" },
{ 208, "Authentication failure" },
{ 209, "User authentication failed" },
{ 210, "Context not found" },
{ 211, "All PDP dynamic addresses are occupied" },
{ 212, "No memory is available" },
{ 213, "Relocation failure" },
{ 214, "Unknown mandatory extension header" },
{ 215, "Semantic error in the TFT operation" },
{ 216, "Syntactic error in the TFT operation" },
{ 217, "Semantic errors in packet filter(s)" },
{ 218, "Syntactic errors in packet filter(s)" },
{ 219, "Missing or unknown APN" },
{ 220, "Unknown PDP address or PDP type" },
{ 252, "Request related to possibly duplicated packets already fulfilled" }, /* charging */
{ 253, "Request already fulfilled" }, /* charging */
{ 254, "Sequence numbers of released/cancelled packets IE incorrect" }, /* charging */
{ 255, "Request not fulfilled" }, /* charging */
{ 0, NULL }
};
/* GPRS: 9.02 v7.7.0
* UMTS: 29.002 v4.2.1, chapter 17.5, page 268
* TODO: Check if all map_cause values are included
*/
static const value_string map_cause_type[] = {
{ 1, "Unknown subscriber" },
{ 8, "Roaming not allowed" },
{ 10, "Bearer service not provisioned" },
{ 11, "Teleservice not provisioned" },
{ 13, "Call barred" },
{ 21, "Facility not supported" },
{ 23, "Update GPRS location" },
{ 24, "Send routing info for GPRS" },
{ 26, "Note MS present for GPRS" },
{ 27, "Absent subscriber" },
{ 34, "System failure" },
{ 35, "Data missing" },
{ 36, "Unexpected data value" },
{ 44, "Number chenged" },
{ 45, "Busy subscriber" },
{ 46, "No subscriber reply" },
{ 48, "Facility not allowed" },
{ 0, NULL }
};
static const value_string gsn_addr_type[] = {
{ 0x00, "IPv4" },
{ 0x01, "IPv6" },
{ 0, NULL },
};
static const value_string pdp_type[] = {
{ 0x00, "X.25" },
{ 0x01, "PPP" },
{ 0x02, "OSP:IHOSS" },
{ 0x21, "IPv4" },
{ 0x57, "IPv6" },
{ 0, NULL }
};
static const value_string pdp_org_type[] = {
{ 0, "ETSI" },
{ 1, "IETF" },
{ 0, NULL }
};
static const value_string qos_delay_type[] = {
{ 0x00, "Subsribed delay class (in MS to network direction)" },
{ 0x01, "Delay class 1" },
{ 0x02, "Delay class 2" },
{ 0x03, "Delay class 3" },
{ 0x04, "Delay class 4 (best effort)" },
{ 0x07, "Reserved" },
{ 0, NULL }
};
static const value_string qos_reliability_type[] = {
{ 0x00, "Subscribed reliability class (in MS to network direction)" },
{ 0x01, "Ack GTP/LLC/RLC, Protected data" },
{ 0x02, "Unack GTP, Ack LLC/RLC, Protected data" },
{ 0x03, "Unack GTP/LLC, Ack RLC, Protected data" },
{ 0x04, "Unack GTP/LLC/RLC, Protected data" },
{ 0x05, "Unack GTP/LLC/RLC, Unprotected data" },
{ 0x07, "Reserved" },
{ 0, NULL }
};
static const value_string qos_peak_type[] = {
{ 0x00, "Subscribed peak throughput (in MS to network direction)" },
{ 0x01, "Up to 1 000 oct/s" },
{ 0x02, "Up to 2 000 oct/s" },
{ 0x03, "Up to 4 000 oct/s" },
{ 0x04, "Up to 8 000 oct/s" },
{ 0x05, "Up to 16 000 oct/s" },
{ 0x06, "Up to 32 000 oct/s" },
{ 0x07, "Up to 64 000 oct/s" },
{ 0x08, "Up to 128 000 oct/s" },
{ 0x09, "Up to 256 000 oct/s" },
/* QoS Peak throughput classes from 0x0A to 0x0F (from 10 to 15) are subscribed */
{ 0x0A, "Reserved" },
{ 0x0B, "Reserved" },
{ 0x0C, "Reserved" },
{ 0x0D, "Reserved" },
{ 0x0E, "Reserved" },
{ 0x0F, "Reserved" },
{ 0, NULL }
};
static const value_string qos_precedence_type[] = {
{ 0x00, "Subscribed precedence (in MS to network direction)" },
{ 0x01, "High priority" },
{ 0x02, "Normal priority" },
{ 0x03, "Low priority" },
{ 0x07, "Reserved" },
{ 0, NULL }
};
static const value_string qos_mean_type[] = {
{ 0x00, "Subscribed mean throughput (in MS to network direction)" },
{ 0x01, "100 oct/h" }, /* Class 2 */
{ 0x02, "200 oct/h" }, /* Class 3 */
{ 0x03, "500 oct/h" }, /* Class 4 */
{ 0x04, "1 000 oct/h" }, /* Class 5 */
{ 0x05, "2 000 oct/h" }, /* Class 6 */
{ 0x06, "5 000 oct/h" }, /* Class 7 */
{ 0x07, "10 000 oct/h" }, /* Class 8 */
{ 0x08, "20 000 oct/h" }, /* Class 9 */
{ 0x09, "50 000 oct/h" }, /* Class 10 */
{ 0x0A, "100 000 oct/h" }, /* Class 11 */
{ 0x0B, "200 000 oct/h" }, /* Class 12 */
{ 0x0C, "500 000 oct/h" }, /* Class 13 */
{ 0x0D, "1 000 000 oct/h" }, /* Class 14 */
{ 0x0E, "2 000 000 oct/h" }, /* Class 15 */
{ 0x0F, "5 000 000 oct/h" }, /* Class 16 */
{ 0x10, "10 000 000 oct/h" }, /* Class 17 */
{ 0x11, "20 000 000 oct/h" }, /* Class 18 */
{ 0x12, "50 000 000 oct/h" }, /* Class 19 */
/* QoS Mean throughput classes from 0x13 to 0x1E (from 19 to 30) are subscribed */
{ 0x13, "Reserved" },
{ 0x14, "Reserved" },
{ 0x15, "Reserved" },
{ 0x16, "Reserved" },
{ 0x17, "Reserved" },
{ 0x18, "Reserved" },
{ 0x19, "Reserved" },
{ 0x1A, "Reserved" },
{ 0x1B, "Reserved" },
{ 0x1C, "Reserved" },
{ 0x1D, "Reserved" },
{ 0x1E, "Reserved" },
{ 0x1F, "Best effort" }, /* Class 1 */
{ 0, NULL }
};
static const value_string qos_del_err_sdu[] = {
{ 0x00, "Subscribed delivery of erroneous SDUs (in MS to network direction)" },
{ 0x01, "No detect ('-')" },
{ 0x02, "Erroneous SDUs are delivered ('yes')" },
{ 0x03, "Erroneous SDUs are not delivered ('no')" },
{ 0x07, "Reserved" }, /* All other values are reserved */
{ 0, NULL }
};
static const value_string qos_del_order[] = {
{ 0x00, "Subscribed delivery order (in MS to network direction)" },
{ 0x01, "With delivery order ('yes')" },
{ 0x02, "Without delivery order ('no')" },
{ 0x03, "Reserved" }, /* All other values are reserved */
{ 0, NULL }
};
static const value_string qos_traf_class[] = {
{ 0x00, "Subscribed traffic class (in MS to network direction)" },
{ 0x01, "Conversational class" },
{ 0x02, "Streaming class" },
{ 0x03, "Interactive class" },
{ 0x04, "Background class" },
{ 0x07, "Reserved" }, /* All other values are reserved */
{ 0, NULL }
};
static const value_string qos_max_sdu_size[] = {
{ 0x00, "Subscribed maximum SDU size (in MS to network direction" },
/* For values from 0x01 to 0x96 (from 1 to 150), use a granularity of 10 octets */
{ 0x97, "1502 octets" },
{ 0x98, "1510 octets" },
{ 0x99, "1520 octets" },
{ 0, NULL } /* All other values are reserved */
};
static const value_string qos_max_ul[] = {
{ 0x00, "Subscribed maximum bit rate for uplink (in MS to network direction)" },
/* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
/* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
/* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
{ 0xFF, "0 kbps" },
{ 0, NULL }
};
static const value_string qos_max_dl[] = {
{ 0x00, "Subscribed maximum bit rate for downlink (in MS to network direction)" },
/* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
/* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
/* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
{ 0xFF, "0 kbps" },
{ 0, NULL }
};
static const value_string qos_res_ber[] = {
{ 0x00, "Subscribed residual BER (in MS to network direction)" },
{ 0x01, "1/20 = 5x10^-2" },
{ 0x02, "1/100 = 1x10^-2" },
{ 0x03, "1/200 = 5x10^-3" },
{ 0x04, "1/250 = 4x10^-3" },
{ 0x05, "1/1 000 = 1x10^-3" },
{ 0x06, "1/10 000 = 1x10^-4" },
{ 0x07, "1/100 000 = 1x10^-5" },
{ 0x08, "1/1 000 000 = 1x10^-6" },
{ 0x09, "3/50 000 000 = 6x10^-8" },
{ 0x0F, "Reserved" }, /* All other values are reserved */
{ 0, NULL }
};
static const value_string qos_sdu_err_ratio[] = {
{ 0x00, "Subscribed SDU error ratio (in MS to network direction)" },
{ 0x01, "1/100 = 1x10^-2" },
{ 0x02, "7/1000 = 7x10^-3" },
{ 0x03, "1/1 000 = 1x10^-3" },
{ 0x04, "1/10 000 = 1x10^-4" },
{ 0x05, "1/100 000 = 1x10^-5" },
{ 0x06, "1/1 000 000 = 1x10^-6" },
{ 0x07, "1/10 = 1x10^-1" },
{ 0x0F, "Reserved" }, /* All other values are reserved */
{ 0, NULL }
};
static const value_string qos_traf_handl_prio[] = {
{ 0x00, "Subscribed traffic handling priority (in MS to network direction)" },
{ 0x01, "Priority level 1" },
{ 0x02, "Priority level 2" },
{ 0x03, "Priority level 3" },
{ 0, NULL }
};
static const value_string qos_trans_delay[] = {
{ 0x00, "Subscribed Transfer Delay (in MS to network direction)" },
{ 0x01, "10 ms" }, /* Using a granularity of 10 ms */
{ 0x02, "20 ms" },
{ 0x03, "30 ms" },
{ 0x04, "40 ms" },
{ 0x05, "50 ms" },
{ 0x06, "60 ms" },
{ 0x07, "70 ms" },
{ 0x08, "80 ms" },
{ 0x09, "90 ms" },
{ 0x0A, "100 ms" },
{ 0x0B, "110 ms" },
{ 0x0C, "120 ms" },
{ 0x0D, "130 ms" },
{ 0x0E, "140 ms" },
{ 0x0F, "150 ms" },
{ 0x10, "200 ms" }, /* (For values from 0x10 to 0x1F, value = 200 ms + (value - 0x10) * 50 ms */
{ 0x11, "250 ms" },
{ 0x12, "300 ms" },
{ 0x13, "350 ms" },
{ 0x14, "400 ms" },
{ 0x15, "450 ms" },
{ 0x16, "500 ms" },
{ 0x17, "550 ms" },
{ 0x18, "600 ms" },
{ 0x19, "650 ms" },
{ 0x1A, "700 ms" },
{ 0x1B, "750 ms" },
{ 0x1C, "800 ms" },
{ 0x1D, "850 ms" },
{ 0x1E, "900 ms" },
{ 0x1F, "950 ms" },
{ 0x20, "1000 ms" }, /* For values from 0x20 to 0x3E, value = 1000 ms + (value - 0x20) * 100 ms */
{ 0x21, "1100 ms" },
{ 0x22, "1200 ms" },
{ 0x23, "1300 ms" },
{ 0x24, "1400 ms" },
{ 0x25, "1500 ms" },
{ 0x26, "1600 ms" },
{ 0x27, "1700 ms" },
{ 0x28, "1800 ms" },
{ 0x29, "1900 ms" },
{ 0x2A, "2000 ms" },
{ 0x2B, "2100 ms" },
{ 0x2C, "2200 ms" },
{ 0x2D, "2300 ms" },
{ 0x2E, "2400 ms" },
{ 0x2F, "2500 ms" },
{ 0x30, "2600 ms" },
{ 0x31, "2700 ms" },
{ 0x32, "2800 ms" },
{ 0x33, "2900 ms" },
{ 0x34, "3000 ms" },
{ 0x35, "3100 ms" },
{ 0x36, "3200 ms" },
{ 0x37, "3300 ms" },
{ 0x38, "3400 ms" },
{ 0x39, "3500 ms" },
{ 0x3A, "3600 ms" },
{ 0x3B, "3700 ms" },
{ 0x3C, "3800 ms" },
{ 0x3D, "3900 ms" },
{ 0x3E, "4000 ms" },
{ 0x3F, "Reserved"},
{ 0, NULL }
};
static const value_string qos_guar_ul[] = {
{ 0x00, "Subscribed guaranteed bit rate for uplink (in MS to network direction)" },
/* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
/* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
/* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
{ 0xFF, "0 kbps" },
{ 0, NULL }
};
static const value_string qos_guar_dl[] = {
{ 0x00, "Subscribed guaranteed bit rate for downlink (in MS to network direction)" },
/* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */
/* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */
/* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */
{ 0xFF, "0 kbps" },
{ 0, NULL }
};
static const value_string sel_mode_type[] = {
{ 0, "MS or network provided APN, subscribed verified" },
{ 1, "MS provided APN, subscription not verified" },
{ 2, "Network provided APN, subscription not verified" },
{ 3, "For future use (Network provided APN, subscription not verified" },/* Shall not be sent. If received, shall be sent as value 2 */
{ 0, NULL }
};
static const value_string tr_comm_type[] = {
{ 1, "Send data record packet" },
{ 2, "Send possibly duplicated data record packet" },
{ 3, "Cancel data record packet" },
{ 4, "Release data record packet"},
{ 0, NULL }
};
/* TODO: CHeck if all ms_reasons are included */
static const value_string ms_not_reachable_type[] = {
{ 0, "No paging response via the MSC" },
{ 1, "IMSI detached" },
{ 2, "Roaming restriction" },
{ 3, "Deregistered in the HLR for non GPRS" },
{ 4, "MS purge for non GPRS" },
{ 5, "No paging response via the SGSN" },
{ 6, "GPRS detached" },
{ 7, "Deregistered in the HLR for non GPRS" },
{ 8, "MS purged for GPRS" },
{ 9, "Unidentified subscriber via the MSC" },
{ 10, "Unidentified subscriber via the SGSN" },
{ 0, NULL }
};
/* UMTS: 25.413 v3.4.0, chapter 9.2.1.4, page 80
*/
static const value_string ranap_cause_type[] = {
/* Radio Network Layer Cause (1-->64) */
{ 1, "RAB preempted" },
{ 2, "Trelocoverall Expiry" },
{ 3, "Trelocprep Expiry" },
{ 4, "Treloccomplete Expiry" },
{ 5, "Tqueing Expiry" },
{ 6, "Relocation Triggered" },
{ 7, "TRELOCalloc Expiry" },
{ 8, "Unable to Estabish During Relocation" },
{ 9, "Unknown Target RNC" },
{ 10, "Relocation Cancelled" },
{ 11, "Successful Relocation" },
{ 12, "Requested Ciphering and/or Integrity Protection Algorithms not Supported" },
{ 13, "Change of Ciphering and/or Integrity Protection is not supported" },
{ 14, "Failure in the Radio Interface Procedure" },
{ 15, "Release due to UTRAN Generated Reason" },
{ 16, "User Inactivity" },
{ 17, "Time Critical Relocation" },
{ 18, "Requested Traffic Class not Available" },
{ 19, "Invalid RAB Parameters Value" },
{ 20, "Requested Maximum Bit Rate not Available" },
{ 21, "Requested Guaranteed Bit Rate not Available" },
{ 22, "Requested Transfer Delay not Achievable" },
{ 23, "Invalid RAB Parameters Combination" },
{ 24, "Condition Violation for SDU Parameters" },
{ 25, "Condition Violation for Traffic Handling Priority" },
{ 26, "Condition Violation for Guaranteed Bit Rate" },
{ 27, "User Plane Versions not Supported" },
{ 28, "Iu UP Failure" },
{ 29, "Relocation Failure in Target CN/RNC or Target System" },
{ 30, "Invalid RAB ID" },
{ 31, "No Remaining RAB" },
{ 32, "Interaction with other procedure" },
{ 33, "Requested Maximum Bit Rate for DL not Available" },
{ 34, "Requested Maximum Bit Rate for UL not Available" },
{ 35, "Requested Guaranteed Bit Rate for DL not Available" },
{ 36, "Requested Guaranteed Bit Rate for UL not Available" },
{ 37, "Repeated Integrity Checking Failure" },
{ 38, "Requested Report Type not supported" },
{ 39, "Request superseded" },
{ 40, "Release due to UE generated signalling connection release" },
{ 41, "Resource Optimisation Relocation" },
{ 42, "Requested Information Not Available" },
{ 43, "Relocation desirable for radio reasons" },
{ 44, "Relocation not supported in Target RNC or Target System" },
{ 45, "Directed Retry" },
{ 46, "Radio Connection With UE Lost" },
/* Transport Layer Cause (65-->80) */
{ 65, "Signalling Transport Resource Failure" },
{ 66, "Iu Transport Connection Failed to Establish" },
/* NAS Cause (81-->96) */
{ 81, "User Restriction Start Indication" },
{ 82, "User Restriction End Indication" },
{ 83, "Normal Release" },
/* Protocol Cause (97-->112) */
{ 97, "Transfer Syntax Error" },
{ 98, "Semantic Error" },
{ 99, "Message not compatible with receiver state" },
{ 100, "Abstract Syntax Error (Reject)" },
{ 101, "Abstract Syntax Error (Ignore and Notify)" },
{ 102, "Abstract Syntax Error (Falsely Constructed Message" },
/* Miscellaneous Cause (113-->128) */
{ 113, "O & M Intervention" },
{ 114, "No Resource Available" },
{ 115, "Unspecified Failure" },
{ 116, "Network Opimisation" },
/* Non-standard Cause (129-->255) */
{ 0, NULL }
};
static const value_string mm_sec_modep[] = {
{ 0, "Used cipher value, UMTS keys and Quintuplets" },
{ 1, "GSM key and triplets" },
{ 2, "UMTS key and quintuplets" },
{ 3, "GSM key and quintuplets" },
{ 0, NULL }
};
static const value_string mm_proto_disc[] = {
{ 0x00, "Group call control" },
{ 0x01, "Broadcast call control" },
{ 0x02, "PDSS1" },
{ 0x03, "Call control; call related SS messages" },
{ 0x04, "PDSS2" },
{ 0x05, "Mobility Management messages for non-GPRS services" },
{ 0x06, "Radio Resource management messages" },
{ 0x08, "Mobility Management messages for GPRS services" },
{ 0x09, "SMS" },
{ 0x0A, "Session Management messages" },
{ 0x0B, "Non-call related SS messages" },
{ 0, NULL }
};
static const value_string mm_rr_mess[] = {
{ 0x3C, "RR initialization request" },
{ 0x3B, "Additional assignment" },
{ 0x3F, "Immediate assignment" },
{ 0x39, "Immediate assignment extended" },
{ 0x3A, "Immediate assignment reject" },
{ 0x35, "Ciphering mode command" },
{ 0x32, "Ciphering mode complete" },
{ 0x30, "Configuration change command" },
{ 0x31, "Configuration change ack" },
{ 0x33, "Configuration change reject" },
{ 0x2E, "Assignment command" },
{ 0x29, "Assignment complete" },
{ 0x2F, "Assigment failure" },
{ 0x2B, "Handover command" },
{ 0x2C, "Handover complete" },
{ 0x28, "Handover failure" },
{ 0x2D, "Physical information" },
{ 0x08, "RR-cell change order" },
{ 0x23, "PDCH assignment command" },
{ 0x0D, "Channel release" },
{ 0x0A, "Partial release" },
{ 0x0F, "PArtial release complete" },
{ 0x21, "Paging request type 1" },
{ 0x22, "Paging request type 2" },
{ 0x24, "Paging request type 3" },
{ 0x27, "Paging response" },
{ 0x20, "Notification/NCH" },
{ 0x25, "Notification/FACCH" },
{ 0x26, "Reserved" },
{ 0x0B, "Reserved" },
{ 0x18, "System information type 8" },
{ 0x19, "System information type 1" },
{ 0x1A, "System information type 2" },
{ 0x1B, "System information type 3" },
{ 0x1C, "System information type 4" },
{ 0x1D, "System information type 5" },
{ 0x1E, "System information type 6" },
{ 0x1F, "System information type 7" },
{ 0x02, "System information type 2bis" },
{ 0x03, "System information type 2ter" },
{ 0x05, "System information type 5bis" },
{ 0x06, "System information type 5ter" },
{ 0x04, "System information 9" },
{ 0x00, "System information 13" },
{ 0x01, "System information 14" },
{ 0x3D, "System information type 16" },
{ 0x3E, "System information type 17" },
{ 0x10, "Channel mode modify" },
{ 0x12, "RR status" },
{ 0x17, "Channel mode modify ack" },
{ 0x14, "Frequency redefinition" },
{ 0x15, "Measurement report" },
{ 0x16, "Classmark change" },
{ 0x13, "Classmark enquiry" },
{ 0x36, "Extended measurement report" },
{ 0x37, "Extended measurement order" },
{ 0x34, "GPRS suspension request" },
{ 0x09, "VGCS uplink grant" },
{ 0x0E, "Uplink release" },
{ 0x0C, "Uplink free" },
{ 0x2A, "Uplink busy" },
{ 0x11, "Talker indication" },
{ 0, NULL }
};
static const value_string mm_mm_mess[] = {
{ 0x01, "IMSI DETACH INDICATION" },
{ 0x02, "LOCATION UPDATING ACCEPT" },
{ 0x04, "LOCATION UPDATING REJECT" },
{ 0x08, "LOCATION UPDATING REQUEST" },
{ 0x11, "AUTHENTICATION REJECT" },
{ 0x12, "AUTHENTICATION REQUEST" },
{ 0x14, "AUTHENTICATION RESPONSE" },
{ 0x18, "IDENTITY REQUEST" },
{ 0x19, "IDENTITY RESPONSE" },
{ 0x1A, "TMSI REALLOCATION COMMAND" },
{ 0x1B, "TMSI REALLOCATION COMPLETE" },
{ 0x21, "CM SERVICE ACCEPT" },
{ 0x22, "CM SERVICE REJECT" },
{ 0x23, "CM SERVICE ABORT" },
{ 0x24, "CM SERVICE REQUEST" },
{ 0x25, "CM SERVICE PROMPT" },
{ 0x26, "NOTIFICATION RESPONSE" },
{ 0x28, "CM RE-ESTABLISHMENT REQUEST" },
{ 0x29, "ABORT" },
{ 0x30, "MM NULL" },
{ 0x31, "MM STATUS" },
{ 0x32, "MM INFORMATION" },
{ 0, NULL }
};
static const value_string mm_cc_mess[] = {
{ 0x00, "escape to nationally specific" },
/*{ 0 x 0 0, "- - - Call establishment messages:" },*/
{ 0x01, "ALERTING" },
{ 0x08, "CALL CONFIRMED" },
{ 0x02, "CALL PROCEEDING" },
{ 0x07, "CONNECT" },
{ 0x0F, "CONNECT ACKNOWLEDGE" },
{ 0x0E, "EMERGENCY SETUP" },
{ 0x03, "PROGRESS" },
{ 0x04, "CC-ESTABLISHMENT" },
{ 0x06, "CC-ESTABLISHMENT CONFIRMED" },
{ 0x0B, "RECALL" },
{ 0x09, "START CC" },
{ 0x05, "SETUP" },
/*{ 0 x 0 1, "- - - Call information phase messages:" },*/
{ 0x17, "MODIFY" },
{ 0x1F, "MODIFY COMPLETE" },
{ 0x13, "MODIFY REJECT" },
{ 0x10, "USER INFORMATION" },
{ 0x18, "HOLD" },
{ 0x19, "HOLD ACKNOWLEDGE" },
{ 0x1A, "HOLD REJECT" },
{ 0x1C, "RETRIEVE" },
{ 0x1D, "RETRIEVE ACKNOWLEDGE" },
{ 0x1E, "RETRIEVE REJECT" },
/*{ 0 x 1 0, "- - - Call clearing messages:" },*/
{ 0x25, "DISCONNECT" },
{ 0x2D, "RELEASE" },
{ 0x2A, "RELEASE COMPLETE" },
/*{ 0 x 1 1, "- - - Miscellaneous messages:" },*/
{ 0x39, "CONGESTION CONTROL" },
{ 0x3E, "NOTIFY" },
{ 0x3D, "STATUS" },
{ 0x34, "STATUS ENQUIRY" },
{ 0x35, "START DTMF" },
{ 0x31, "STOP DTMF" },
{ 0x32, "STOP DTMF ACKNOWLEDGE" },
{ 0x36, "START DTMF ACKNOWLEDGE" },
{ 0x37, "START DTMF REJECT" },
{ 0x3A, "FACILITY" },
{ 0, NULL }
};
static const value_string mm_gprs_mess[] = {
{ 0x01, "Attach request" },
{ 0x02, "Attach accept" },
{ 0x03, "Attach complete" },
{ 0x04, "Attach reject" },
{ 0x05, "Detach request" },
{ 0x06, "Detach accept" },
{ 0x08, "Routing area update request" },
{ 0x09, "Routing area update accept" },
{ 0x0A, "Routing area update complete" },
{ 0x0B, "Routing area update reject" },
{ 0x10, "P-TMSI reallocation command" },
{ 0x11, "P-TMSI reallocation complete" },
{ 0x12, "Authentication and ciphering req" },
{ 0x13, "Authentication and ciphering resp" },
{ 0x14, "Authentication and ciphering rej" },
{ 0x15, "Identity request" },
{ 0x16, "Identity response" },
{ 0x20, "GMM status" },
{ 0x21, "GMM information" },
{ 0, NULL }
};
static const value_string tft_code_type[] = {
{ 0, "Spare" },
{ 1, "Create new TFT" },
{ 2, "Delete existing TFT" },
{ 3, "Add packet filters to existing TFT" },
{ 4, "Replace packet filters in existing TFT" },
{ 5, "Delete packet filters from existing TFT" },
{ 6, "Reserved" },
{ 7, "Reserved" },
{ 0, NULL }
};
static const value_string cdr_close_type[] = {
{ 0, "PDP release" },
{ 1, "Volume limit" },
{ 2, "Time limit" },
{ 3, "SGSN change" },
{ 4, "Max changes" },
{ 6, "Management" },
{ 7, "Abnormal" },
{ 0, NULL }
};
static dissector_handle_t ip_handle;
static dissector_handle_t ipv6_handle;
static dissector_handle_t ppp_handle;
static dissector_handle_t data_handle;
static int decode_gtp_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_imsi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rai (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_tlli (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_ptmsi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_qos_gprs (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_reorder (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_auth_tri (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_map_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_ptmsi_sig (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_ms_valid (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_recovery (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_sel_mode (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_16 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_17 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_18 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_19 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_nsapi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_ranap_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rab_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rp_sms (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rp (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_pkt_flow_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_chrg_char (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_trace_ref (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_trace_type (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_ms_reason (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_tr_comm (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_chrg_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_user_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_mm_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_pdp_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_apn (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_gsn_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_proto_conf (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_msisdn (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_qos_umts (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_auth_qui (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_tft (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_target_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_utran_cont (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rab_setup (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_hdr_list (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_trigger_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_omc_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_chrg_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_rel_pack (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_can_pack (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_data_req (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_data_resp (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_node_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_priv_ext (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
static int decode_gtp_unknown (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
typedef struct _gtp_opt {
int optcode;
/* char *name; */
int (*decode)(tvbuff_t *, int, packet_info *, proto_tree *);
} gtp_opt_t;
static const gtp_opt_t gtpopt[] = {
{ GTP_EXT_CAUSE, decode_gtp_cause },
{ GTP_EXT_IMSI, decode_gtp_imsi },
{ GTP_EXT_RAI, decode_gtp_rai },
{ GTP_EXT_TLLI, decode_gtp_tlli },
{ GTP_EXT_PTMSI, decode_gtp_ptmsi },
{ GTP_EXT_QOS_GPRS, decode_gtp_qos_gprs },
{ GTP_EXT_REORDER, decode_gtp_reorder },
{ GTP_EXT_AUTH_TRI, decode_gtp_auth_tri },
{ GTP_EXT_MAP_CAUSE, decode_gtp_map_cause },
{ GTP_EXT_PTMSI_SIG, decode_gtp_ptmsi_sig },
{ GTP_EXT_MS_VALID, decode_gtp_ms_valid },
{ GTP_EXT_RECOVER, decode_gtp_recovery },
{ GTP_EXT_SEL_MODE, decode_gtp_sel_mode },
{ GTP_EXT_16, decode_gtp_16 },
{ GTP_EXT_17, decode_gtp_17 },
{ GTP_EXT_18, decode_gtp_18 },
{ GTP_EXT_19, decode_gtp_19 },
{ GTP_EXT_NSAPI, decode_gtp_nsapi },
{ GTP_EXT_RANAP_CAUSE, decode_gtp_ranap_cause },
{ GTP_EXT_RAB_CNTXT, decode_gtp_rab_cntxt },
{ GTP_EXT_RP_SMS, decode_gtp_rp_sms },
{ GTP_EXT_RP, decode_gtp_rp },
{ GTP_EXT_PKT_FLOW_ID, decode_gtp_pkt_flow_id },
{ GTP_EXT_CHRG_CHAR, decode_gtp_chrg_char },
{ GTP_EXT_TRACE_REF, decode_gtp_trace_ref },
{ GTP_EXT_TRACE_TYPE, decode_gtp_trace_type },
{ GTPv1_EXT_MS_REASON, decode_gtp_ms_reason },
{ GTP_EXT_TR_COMM, decode_gtp_tr_comm },
{ GTP_EXT_CHRG_ID, decode_gtp_chrg_id },
{ GTP_EXT_USER_ADDR, decode_gtp_user_addr },
{ GTP_EXT_MM_CNTXT, decode_gtp_mm_cntxt },
{ GTP_EXT_PDP_CNTXT, decode_gtp_pdp_cntxt },
{ GTP_EXT_APN, decode_gtp_apn },
{ GTP_EXT_PROTO_CONF, decode_gtp_proto_conf },
{ GTP_EXT_GSN_ADDR, decode_gtp_gsn_addr },
{ GTP_EXT_MSISDN, decode_gtp_msisdn },
{ GTP_EXT_QOS_UMTS, decode_gtp_qos_umts }, /* 3G */
{ GTP_EXT_AUTH_QUI, decode_gtp_auth_qui }, /* 3G */
{ GTP_EXT_TFT, decode_gtp_tft }, /* 3G */
{ GTP_EXT_TARGET_ID, decode_gtp_target_id }, /* 3G */
{ GTP_EXT_UTRAN_CONT, decode_gtp_utran_cont }, /* 3G */
{ GTP_EXT_RAB_SETUP, decode_gtp_rab_setup }, /* 3G */
{ GTP_EXT_HDR_LIST, decode_gtp_hdr_list }, /* 3G */
{ GTP_EXT_TRIGGER_ID, decode_gtp_trigger_id }, /* 3G */
{ GTP_EXT_OMC_ID, decode_gtp_omc_id }, /* 3G */
{ GTP_EXT_REL_PACK, decode_gtp_rel_pack }, /* charging */
{ GTP_EXT_CAN_PACK, decode_gtp_can_pack }, /* charging */
{ GTP_EXT_CHRG_ADDR, decode_gtp_chrg_addr },
{ GTP_EXT_DATA_REQ, decode_gtp_data_req }, /* charging */
{ GTP_EXT_DATA_RESP, decode_gtp_data_resp }, /* charging */
{ GTP_EXT_NODE_ADDR, decode_gtp_node_addr },
{ GTP_EXT_PRIV_EXT, decode_gtp_priv_ext },
{ 0, decode_gtp_unknown }
};
typedef struct {
guint8 flags;
guint8 message;
guint16 length;
guint16 seq_no;
guint16 flow_label;
guint8 sndcp_no;
guint8 spare[3];
guint8 tid[8];
} _gtpv0_hdr;
typedef struct {
guint8 flags;
guint8 message;
guint16 length;
guint32 teid;
} _gtpv1_hdr;
static struct gcdr_ { /* GCDR 118B */
guint8 imsi[8];
guint32 ggsnaddr;
guint32 chrgid;
guint32 sgsnaddr;
gchar apn[63];
guint8 pdporg;
guint8 pdptype;
guint32 pdpaddr;
guint8 addrflag;
guint8 qos[3];
guint32 uplink;
guint32 downlink;
guint32 timestamp;
guint32 opening;
guint32 duration;
guint8 closecause;
guint32 seqno;
guint8 msisdn[9];
} gcdr;
typedef struct change_ {
guint8 change;
guint32 time1;
guint32 time2;
guint32 uplink;
guint32 downlink;
guint8 qos_req[3];
guint8 qos_neg[3];
} change_t;
static struct _scdr { /* SCDR 277B */
guint16 len;
guint8 netini;
guint8 anon;
guint8 imsilen;
guint8 imsi[8];
guint8 imei[8];
guint8 msisdnlen;
guint8 msisdn[10];
guint32 sgsnaddr;
guint8 msclass_notused[12];
guint8 msclass_caplen;
guint8 msclass_cap;
guint16 msclass_capomit;
guint16 lac;
guint8 rac;
guint16 cid;
guint32 chrgid;
guint32 ggsnaddr;
gchar apn[64];
guint8 pdporg;
guint8 pdptype;
guint32 pdpaddr;
guint8 listind;
change_t change[5];
guint32 timestamp;
guint32 opening;
guint32 duration;
guint8 sgsnchange;
guint8 closecause;
guint8 diag1;
guint8 diag2;
guint8 diag3;
guint8 diag4;
guint32 diag5;
guint32 seqno;
} scdr;
typedef struct mmchange_ {
guint16 lac;
guint8 rac;
guint16 cid;
guint8 omit[8];
} mmchange_t;
static struct _mcdr { /* MCDR 147B */
guint16 len;
guint8 imsilen;
guint8 imsi[8];
guint8 imei[8];
guint8 msisdnlen;
guint8 msisdn[10];
guint32 sgsnaddr;
guint8 msclass_notused[12];
guint8 msclass_caplen;
guint8 msclass_cap;
guint16 msclass_capomit;
guint16 lac;
guint8 rac;
guint16 cid;
guint8 change_count;
mmchange_t change[5];
guint32 timestamp;
guint32 opening;
/* guint8 opening[8]; */
guint32 duration;
guint8 sgsnchange;
guint8 closecause;
guint8 diag1;
guint8 diag2;
guint8 diag3;
guint8 diag4;
guint32 diag5;
guint32 seqno;
} mcdr;
static struct _socdr { /* SOCDR 80B */
guint16 len;
guint8 imsilen;
guint8 imsi[8];
guint8 imei[8];
guint8 msisdnlen;
guint8 msisdn[10];
guint8 msclass_notused[12];
guint8 msclass_caplen;
guint8 msclass_cap;
guint16 msclass_capomit;
guint8 serv_centr[9];
guint8 rec_ent[9];
guint16 lac;
guint8 rac;
guint16 cid;
guint32 time1;
guint32 time2;
guint8 messref;
guint16 smsres;
} socdr;
static struct _stcdr { /* STCDR 79B */
guint16 len;
guint8 imsilen;
guint8 imsi[8];
guint8 imei[8];
guint8 msisdnlen;
guint8 msisdn[10];
guint8 msclass_notused[12];
guint8 msclass_caplen;
guint8 msclass_cap;
guint16 msclass_capomit;
guint8 serv_centr[9];
guint8 rec_ent[9];
guint16 lac;
guint8 rac;
guint16 cid;
guint32 time1;
guint32 time2;
guint16 smsres;
} stcdr;
static guint8 gtp_version = 0;
static char *yesno[] = { "False", "True" };
static void
col_append_str_gtp(column_info *cinfo, gint el, gchar *proto_name) {
int i;
int max_len;
gchar _tmp[COL_MAX_LEN];
max_len = COL_MAX_LEN;
for (i = 0; i < cinfo->num_cols; i++) {
if (cinfo->fmt_matx[i][el]) {
if (cinfo->col_data[i] != cinfo->col_buf[i]) {
strncpy(cinfo->col_buf[i], cinfo->col_data[i], max_len);
cinfo->col_buf[i][max_len - 1] = '\0';
}
_tmp[0] = '\0';
strcat(_tmp, proto_name);
strcat(_tmp, " <");
strcat(_tmp, cinfo->col_buf[i]);
strcat(_tmp, ">");
cinfo->col_buf[i][0] = '\0';
strcat(cinfo->col_buf[i], _tmp);
cinfo->col_data[i] = cinfo->col_buf[i];
}
}
}
static gchar *
id_to_str(const guint8 *ad) {
static gchar *str[17];
gchar *p;
guint8 bits8to5, bits4to1, i;
static const gchar hex_digits[10] = "0123456789";
p = (gchar *)&str[17];
*--p = '\0';
i = 7;
for (;;) {
bits8to5 = (ad[i] >> 4) & 0x0F;
bits4to1 = ad[i] & 0x0F;
if (bits8to5 < 0xA) *--p = hex_digits[bits8to5];
if (bits4to1 < 0xA) *--p = hex_digits[bits4to1];
if (i == 0) break;
i--;
}
return p;
}
static gchar *
imsi_to_str(const guint8 *ad) {
static gchar *str[16];
gchar *p;
guint8 i, j = 0;
p = (gchar *)&str[0];
for (i=0;i<8;i++) {
if ((ad[i] & 0x0F) <= 9) p[j++] = (ad[i] & 0x0F) + 0x30;
if (((ad[i] >> 4) & 0x0F) <= 9) p[j++] = ((ad[i] >> 4) & 0x0F) + 0x30;
}
p[j] = 0;
return p;
}
static gchar *
msisdn_to_str(const guint8 *ad, int len) {
static gchar *str[17];
gchar *p;
guint8 bits8to5, bits4to1, i;
static const gchar hex_digits[16] = "0123456789 ";
p = (gchar *)&str[0];
*p = '+';
i = 1;
for (;;) {
bits8to5 = (ad[i] >> 4) & 0x0F;
bits4to1 = ad[i] & 0x0F;
if (bits4to1 < 0xA) *++p = hex_digits[bits4to1];
if (bits8to5 < 0xA) *++p = hex_digits[bits8to5];
if (i == len-1) break;
i++;
}
*++p = '\0';
return (gchar *)&str[0];
}
static gchar *
time_int_to_str (guint32 time)
{
nstime_t nstime;
nstime.secs = time;
nstime.nsecs = 0;
return abs_time_to_str (&nstime);
}
static gchar *
rel_time_int_to_str (guint32 time)
{
nstime_t nstime;
nstime.secs = time;
nstime.nsecs = 0;
return rel_time_to_str (&nstime);
}
/* Next definitions and function check_field_presence checks if given field
* in GTP packet is compliant with ETSI
*/
typedef struct _header {
guint8 code;
guint8 presence;
} ext_header;
typedef struct _message {
guint8 code;
ext_header fields[32];
} _gtp_mess_items;
/* ---------------------
* GPRS messages
* ---------------------*/
static _gtp_mess_items gprs_mess_items[] = {
{
GTP_MSG_ECHO_REQ, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_ECHO_RESP, {
{ GTP_EXT_RECOVER, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_VER_NOT_SUPP, {
{ 0, 0 }
}
},
{
GTP_MSG_NODE_ALIVE_REQ, {
{ GTP_EXT_NODE_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_NODE_ALIVE_RESP, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_REDIR_REQ, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_NODE_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_REDIR_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_CREATE_PDP_REQ, {
{ GTP_EXT_QOS_GPRS, GTP_MANDATORY },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_SEL_MODE, GTP_MANDATORY },
{ GTP_EXT_FLOW_LABEL, GTP_MANDATORY },
{ GTP_EXT_FLOW_SIG, GTP_MANDATORY },
{ GTP_EXT_MSISDN, GTP_MANDATORY },
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_APN, GTP_MANDATORY },
{ GTP_EXT_PROTO_CONF, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_CREATE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_QOS_GPRS, GTP_CONDITIONAL },
{ GTP_EXT_REORDER, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL },
{ GTP_EXT_FLOW_SIG, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ID, GTP_CONDITIONAL },
{ GTP_EXT_USER_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PROTO_CONF, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_UPDATE_PDP_REQ, {
{ GTP_EXT_QOS_GPRS, GTP_MANDATORY },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_FLOW_LABEL, GTP_MANDATORY },
{ GTP_EXT_FLOW_SIG, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 },
}
},
{
GTP_MSG_UPDATE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_QOS_GPRS, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL },
{ GTP_EXT_FLOW_SIG, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ID, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_PDP_REQ, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 },
}
},
{
GTP_MSG_CREATE_AA_PDP_REQ, {
{ GTP_EXT_QOS_GPRS, GTP_MANDATORY },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_SEL_MODE, GTP_MANDATORY },
{ GTP_EXT_FLOW_LABEL, GTP_MANDATORY },
{ GTP_EXT_FLOW_SIG, GTP_MANDATORY },
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_APN, GTP_MANDATORY },
{ GTP_EXT_PROTO_CONF, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_CREATE_AA_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_QOS_GPRS, GTP_CONDITIONAL },
{ GTP_EXT_REORDER, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL },
{ GTP_EXT_FLOW_SIG, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ID, GTP_CONDITIONAL },
{ GTP_EXT_USER_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PROTO_CONF, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_AA_PDP_REQ, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_AA_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_ERR_IND, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REQ, {
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REJ_REQ, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REJ_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SEND_ROUT_INFO_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SEND_ROUT_INFO_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_MAP_CAUSE, GTP_OPTIONAL },
{ GTP_EXT_MS_REASON, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FAIL_REP_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FAIL_REP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_MAP_CAUSE, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_MS_PRESENT_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_MS_PRESENT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_IDENT_REQ, {
{ GTP_EXT_RAI, GTP_MANDATORY },
{ GTP_EXT_PTMSI, GTP_MANDATORY },
{ GTP_EXT_PTMSI_SIG, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_IDENT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_AUTH_TRI, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_REQ, {
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_RAI, GTP_MANDATORY },
{ GTP_EXT_TLLI, GTP_MANDATORY },
{ GTP_EXT_PTMSI_SIG, GTP_OPTIONAL },
{ GTP_EXT_MS_VALID, GTP_OPTIONAL },
{ GTP_EXT_FLOW_SIG, GTP_MANDATORY },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_FLOW_SIG, GTP_CONDITIONAL },
{ GTP_EXT_MM_CNTXT, GTP_CONDITIONAL },
{ GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_ACK, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_FLOW_II, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DATA_TRANSF_REQ, {
{ GTP_EXT_TR_COMM, GTP_MANDATORY },
{ GTP_EXT_DATA_REQ, GTP_CONDITIONAL },
{ GTP_EXT_REL_PACK, GTP_CONDITIONAL },
{ GTP_EXT_CAN_PACK, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DATA_TRANSF_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_DATA_RESP, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
0, {
{ 0, 0 }
}
}
};
/* -----------------------------
* UMTS messages
* -----------------------------*/
static _gtp_mess_items umts_mess_items[] = {
{
GTP_MSG_ECHO_REQ, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_ECHO_RESP, {
{ GTP_EXT_RECOVER, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_VER_NOT_SUPP, {
{ 0, 0 }
}
},
{
GTP_MSG_NODE_ALIVE_REQ, {
{ GTP_EXT_NODE_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_NODE_ALIVE_RESP, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_REDIR_REQ, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_NODE_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_REDIR_REQ, {
{ 0, 0 }
}
},
{
GTP_MSG_CREATE_PDP_REQ, {
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_SEL_MODE, GTP_CONDITIONAL },
{ GTP_EXT_TEID, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_NSAPI, GTP_MANDATORY },
{ GTP_EXT_NSAPI, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_CHAR, GTP_OPTIONAL },
{ GTP_EXT_TRACE_REF, GTP_OPTIONAL },
{ GTP_EXT_TRACE_TYPE, GTP_OPTIONAL },
{ GTP_EXT_USER_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_APN, GTP_CONDITIONAL },
{ GTP_EXT_PROTO_CONF, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_MSISDN, GTP_CONDITIONAL },
{ GTP_EXT_QOS_UMTS, GTP_MANDATORY },
{ GTP_EXT_TFT, GTP_CONDITIONAL },
{ GTP_EXT_TRIGGER_ID, GTP_OPTIONAL },
{ GTP_EXT_OMC_ID, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_CREATE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_REORDER, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_TEID, GTP_CONDITIONAL },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ID, GTP_CONDITIONAL },
{ GTP_EXT_USER_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PROTO_CONF, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_QOS_UMTS, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{ /* checked, SGSN -> GGSN */
GTP_MSG_UPDATE_PDP_REQ, {
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_TEID, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_NSAPI, GTP_MANDATORY },
{ GTP_EXT_TRACE_REF, GTP_OPTIONAL },
{ GTP_EXT_TRACE_TYPE, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_QOS_UMTS, GTP_MANDATORY },
{ GTP_EXT_TFT, GTP_OPTIONAL },
{ GTP_EXT_TRIGGER_ID, GTP_OPTIONAL },
{ GTP_EXT_OMC_ID, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{ /* checked, GGSN -> SGSN */
GTP_MSG_UPDATE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_RECOVER, GTP_OPTIONAL },
{ GTP_EXT_TEID, GTP_CONDITIONAL },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ID, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_QOS_UMTS, GTP_CONDITIONAL },
{ GTP_EXT_CHRG_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_PDP_REQ, {
{ GTP_EXT_TEAR_IND, GTP_CONDITIONAL },
{ GTP_EXT_NSAPI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_DELETE_PDP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_ERR_IND, {
{ GTP_EXT_TEID, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_MANDATORY },
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_APN, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REJ_REQ, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_MANDATORY },
{ GTP_EXT_USER_ADDR, GTP_MANDATORY },
{ GTP_EXT_APN, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_PDU_NOTIFY_REJ_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SUPP_EXT_HDR, {
{ GTP_EXT_HDR_LIST, GTP_MANDATORY },
{ 0, 0 }
}
},
{
GTP_MSG_SEND_ROUT_INFO_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SEND_ROUT_INFO_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_MAP_CAUSE, GTP_OPTIONAL },
{ GTPv1_EXT_MS_REASON, GTP_OPTIONAL },
{ GTP_EXT_GSN_ADDR, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FAIL_REP_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FAIL_REP_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_MAP_CAUSE, GTP_OPTIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_MS_PRESENT_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_MS_PRESENT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_IDENT_REQ, {
{ GTP_EXT_RAI, GTP_MANDATORY },
{ GTP_EXT_PTMSI, GTP_MANDATORY },
{ GTP_EXT_PTMSI_SIG, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_IDENT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_AUTH_TRI, GTP_CONDITIONAL },
{ GTP_EXT_AUTH_QUI, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_REQ, {
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_RAI, GTP_MANDATORY },
{ GTP_EXT_TLLI, GTP_CONDITIONAL },
{ GTP_EXT_PTMSI, GTP_CONDITIONAL },
{ GTP_EXT_PTMSI_SIG, GTP_CONDITIONAL },
{ GTP_EXT_MS_VALID, GTP_OPTIONAL },
{ GTP_EXT_TEID_CP, GTP_MANDATORY },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_IMSI, GTP_CONDITIONAL },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_RP_SMS, GTP_OPTIONAL },
{ GTP_EXT_RP, GTP_OPTIONAL },
{ GTP_EXT_PKT_FLOW_ID, GTP_OPTIONAL },
{ GTP_EXT_MM_CNTXT, GTP_CONDITIONAL },
{ GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_SGSN_CNTXT_ACK, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_TEID_II, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_RELOC_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_MANDATORY },
{ GTP_EXT_RANAP_CAUSE, GTP_MANDATORY },
{ GTP_EXT_MM_CNTXT, GTP_MANDATORY },
{ GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_MANDATORY },
{ GTP_EXT_TARGET_ID, GTP_MANDATORY },
{ GTP_EXT_UTRAN_CONT, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_RELOC_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_TEID_CP, GTP_CONDITIONAL },
{ GTP_EXT_RANAP_CAUSE, GTP_CONDITIONAL },
{ GTP_EXT_GSN_ADDR, GTP_CONDITIONAL },
{ GTP_EXT_UTRAN_CONT, GTP_OPTIONAL },
{ GTP_EXT_RAB_SETUP, GTP_CONDITIONAL },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_RELOC_COMP, {
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_RELOC_CANCEL_REQ, {
{ GTP_EXT_IMSI, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_RELOC_CANCEL_RESP, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_RELOC_ACK, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_SRNS_CNTXT, {
{ GTP_EXT_RAB_CNTXT, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
GTP_MSG_FORW_SRNS_CNTXT_ACK, {
{ GTP_EXT_CAUSE, GTP_MANDATORY },
{ GTP_EXT_PRIV_EXT, GTP_OPTIONAL },
{ 0, 0 }
}
},
{
0, {
{ 0, 0 }
}
}
};
static int
check_field_presence(guint8 message, guint8 field, int *position) {
guint i = 0;
_gtp_mess_items *mess_items;
switch(gtp_version) {
case 0:
mess_items = gprs_mess_items;
break;
case 1:
mess_items = umts_mess_items;
break;
default:
return -2;
}
while (mess_items[i].code) {
if (mess_items[i].code == message) {
while (mess_items[i].fields[*position].code) {
if (mess_items[i].fields[*position].code == field) {
(*position)++;
return 0;
} else {
if (mess_items[i].fields[*position].presence == GTP_MANDATORY) {
return mess_items[i].fields[(*position)++].code;
} else {
(*position)++;
}}
}
return -1;
}
i++;
}
return -2;
}
/* Decoders of fields in extension headers, each function returns no of bytes from field */
/* GPRS: 9.60 v7.6.0, chapter
* UMTS: 29.060 v4.0, chapter
*/
static int
decode_gtp_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 cause;
cause = tvb_get_guint8(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_cause : hf_gtpv0_cause, tvb, offset, 2, cause);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.2
* UMTS: 29.060 v4.0, chapter 7.7.2
*/
static int
decode_gtp_imsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 imsi_val[8];
gchar *imsi_str;
tvb_memcpy(tvb, imsi_val, offset+1, 8);
imsi_str = imsi_to_str (imsi_val);
proto_tree_add_string(tree, gtp_version ? hf_gtpv1_imsi : hf_gtpv0_imsi, tvb, offset, 9, imsi_str);
return 9;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.3
* UMTS: 29.060 v4.0, chapter 7.7.3
* TODO: Add details about MCC, MNC, LAC, RAC (show each digit) ?
*/
static int
decode_gtp_rai(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
proto_tree *ext_tree_rai;
proto_item *te;
guint8 byte[3];
te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_RAI, gtp_val, "Unknown message"));
ext_tree_rai = proto_item_add_subtree(te, ett_gtp_rai);
/* tvb_memcpy (tvb, (guint8 *)&byte, offset + 1, 3); */
byte[1] = tvb_get_guint8 (tvb, offset + 1);
byte[2] = tvb_get_guint8 (tvb, offset + 2);
byte[3] = tvb_get_guint8 (tvb, offset + 3);
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 ));
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));
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));
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));
return 7;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.4, page 39
* UMTS: 29.060 v4.0, chapter 7.7.4, page 47
*/
static int
decode_gtp_tlli(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint32 tlli;
tlli = tvb_get_ntohl(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tlli : hf_gtpv0_tlli, tvb, offset, 5, tlli);
return 5;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.5, page 39
* UMTS: 29.060 v4.0, chapter 7.7.5, page 47
*/
static int
decode_gtp_ptmsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint32 ptmsi;
ptmsi = tvb_get_ntohl(tvb, offset);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi : hf_gtpv0_ptmsi, tvb, offset, 5, ptmsi);
return 5;
}
/* adjust - how many bytes before offset should be highlighted
*/
static int
decode_qos_gprs(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 adjust) {
guint8 spare1, delay, reliability, peak, spare2, precedence, spare3, mean;
proto_tree *ext_tree_qos;
proto_item *te;
spare1 = tvb_get_guint8(tvb, offset) & 0xC0;
delay = tvb_get_guint8(tvb, offset) & 0x38;
reliability = tvb_get_guint8(tvb, offset) & 0x07;
peak = tvb_get_guint8(tvb, offset+1) & 0xF0;
spare2 = tvb_get_guint8(tvb, offset+1) & 0x08;
precedence = tvb_get_guint8(tvb, offset+1) & 0x07;
spare3 = tvb_get_guint8(tvb, offset+2) & 0xE0;
mean = tvb_get_guint8(tvb, offset+2) & 0x1F;
te = proto_tree_add_text(tree, tvb, offset-adjust, 3+adjust, "%s: delay: %u, reliability: %u, peak: %u, precedence: %u, mean: %u",
qos_str, delay, reliability, peak, precedence, mean);
ext_tree_qos = proto_item_add_subtree(te, ett_gtp_qos);
if (adjust != 0) {
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare1, tvb, offset, 1, spare1);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_delay, tvb, offset, 1, delay);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_reliability, tvb, offset, 1, reliability);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_peak, tvb, offset+1, 1, peak);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare2, tvb, offset+1, 1, spare2);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_precedence, tvb, offset+1, 1, precedence);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_spare3, tvb, offset+2, 1, spare3);
proto_tree_add_uint(ext_tree_qos, hf_gtpv0_qos_mean, tvb, offset+2, 1, mean);
}
return 3;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.6, page 39
* 4.08
* 3.60
* UMTS: not present
* TODO: check if length is included: ETSI 4.08 vs 9.60
*/
static int
decode_gtp_qos_gprs(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
return (1+decode_qos_gprs(tvb, offset+1, tree, "Quality of Service", 1));
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.7, page 39
* UMTS: 29.060 v4.0, chapter 7.7.6, page 47
*/
static int
decode_gtp_reorder(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 reorder;
reorder = tvb_get_guint8(tvb, offset+1) & 0x01;
proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_reorder : hf_gtpv0_reorder, tvb, offset, 2, reorder);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.8, page 40
* 4.08 v7.1.2, chapter 10.5.3.1+
* UMTS: 29.060 v4.0, chapter 7.7.7
* TODO: Add blurb support by registering items in the protocol registration
*/
static int
decode_gtp_auth_tri(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
proto_tree *ext_tree_auth_tri;
proto_item *te;
te = proto_tree_add_text(tree, tvb, offset, 29, val_to_str(GTP_EXT_AUTH_TRI, gtp_val, "Unknown message"));
ext_tree_auth_tri = proto_item_add_subtree(tree, ett_gtp_auth_tri);
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+1, 16));
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+17, 4));
proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+21, 8));
return 1+16+4+8;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.9, page 40
* 9.02 v7.7.0, page 1090
* UMTS: 29.060 v4.0, chapter 7.7.8, page 48
* 29.002 v4.2.1, chapter 17.5, page 268
*/
static int
decode_gtp_map_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 map_cause;
map_cause = tvb_get_guint8(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_map_cause : hf_gtpv0_map_cause, tvb, offset, 2, map_cause);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.10, page 41
* UMTS: 29.060 v4.0, chapter 7.7.9, page 48
*/
static int
decode_gtp_ptmsi_sig(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint32 ptmsi_sig;
ptmsi_sig = tvb_get_ntoh24(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ptmsi_sig : hf_gtpv0_ptmsi_sig, tvb, offset, 4, ptmsi_sig);
return 4;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.11, page 41
* UMTS: 29.060 v4.0, chapter 7.7.10, page 49
*/
static int
decode_gtp_ms_valid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 ms_valid;
ms_valid = tvb_get_guint8(tvb, offset+1) & 0x01;
proto_tree_add_boolean(tree, gtp_version ? hf_gtpv1_ms_valid : hf_gtpv0_ms_valid, tvb, offset, 2, ms_valid);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.12, page 41
* UMTS: 29.060 v4.0, chapter 7.7.11, page 49
*/
static int
decode_gtp_recovery(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 recovery;
recovery = tvb_get_guint8(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_recovery : hf_gtpv0_recovery, tvb, offset, 2, recovery);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.13, page 42
* UMTS: 29.060 v4.0, chapter 7.7.12, page 49
*/
static int
decode_gtp_sel_mode(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 sel_mode;
sel_mode = tvb_get_guint8(tvb, offset+1) & 0x03;
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_sel_mode : hf_gtpv0_sel_mode, tvb, offset, 2, sel_mode);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.14, page 42
* UMTS: 29.060 v4.0, chapter 7.7.13, page 50
*/
static int
decode_gtp_16(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 ext_flow_label;
guint32 teid_data;
switch (gtp_version) {
case 0:
ext_flow_label = tvb_get_ntohs(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv0_ext_flow_label, tvb, offset, 3, ext_flow_label);
return 3;
case 1:
teid_data = tvb_get_ntohl(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv1_teid_data, tvb, offset, 5, teid_data);
return 5;
default:
proto_tree_add_text(tree, tvb, offset, 1, "Flow label/TEID Data I : GTP version not supported");
return 3;
}
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.15, page 42
* UMTS: 29.060 v4.0, chapter 7.7.14, page 42
*/
static int
decode_gtp_17(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 flow_sig;
guint32 teid_cp;
switch (gtp_version) {
case 0:
flow_sig = tvb_get_ntohs(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv0_flow_sig, tvb, offset, 3, flow_sig);
return 3;
case 1:
teid_cp = tvb_get_ntohl(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv1_teid_cp, tvb, offset, 5, teid_cp);
return 5;
default:
proto_tree_add_text(tree, tvb, offset, 1, "Flow label signalling/TEID control plane : GTP version not supported");
return 3;
}
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.16, page 42
* UMTS: 29.060 v4.0, chapter 7.7.15, page 51
*/
static int
decode_gtp_18(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 flow_ii;
guint32 teid_ii;
proto_tree *ext_tree_flow_ii;
proto_item *te;
switch (gtp_version) {
case 0:
te = proto_tree_add_text(tree, tvb, offset, 4, val_to_str(GTP_EXT_FLOW_II, gtp_val, "Unknown message"));
ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
flow_ii = tvb_get_ntohs(tvb, offset+2);
proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv0_flow_ii, tvb, offset+2, 2, flow_ii);
return 4;
case 1:
te = proto_tree_add_text(tree, tvb, offset, 6, val_to_str(GTP_EXT_TEID_II, gtp_val, "Unknown message"));
ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii);
proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F);
teid_ii = tvb_get_ntohl(tvb, offset+2);
proto_tree_add_uint(ext_tree_flow_ii, hf_gtpv1_teid_ii, tvb, offset+2, 4, teid_ii);
return 6;
default:
proto_tree_add_text(tree, tvb, offset, 1, "Flow data II/TEID Data II : GTP Version not supported");
return 4;
}
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.16A, page 43
* UMTS: 29.060 v4.0, chapter 7.7.16, page 51
* Check if all ms_reason types are included
*/
static int
decode_gtp_19(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 field19;
field19 = tvb_get_guint8(tvb, offset+1);
switch (gtp_version) {
case 0:
proto_tree_add_uint(tree, hf_gtpv0_ms_reason, tvb, offset, 2, field19);
break;
case 1:
proto_tree_add_boolean(tree, hf_gtpv1_tear_ind, tvb, offset, 2, field19 & 0x01);
break;
default:
proto_tree_add_text(tree, tvb, offset, 1, "Information Element Type = 19 : GTP Version not supported");
break;
}
return 2;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.17, page 51
*/
static int
decode_gtp_nsapi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 nsapi;
nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
proto_tree_add_uint(tree, hf_gtpv1_nsapi, tvb, offset, 2, nsapi);
return 2;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.18, page 52
*/
static int
decode_gtp_ranap_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 ranap;
ranap = tvb_get_guint8(tvb, offset+1);
if(ranap > 0 && ranap <=64)
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);
if(ranap > 64 && ranap <=80)
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);
if(ranap > 80 && ranap <=96)
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);
if(ranap > 96 && ranap <=112)
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);
if(ranap > 112 && ranap <=128)
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);
if(ranap > 128 && ranap <=255)
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);
return 2;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.19, page 52
*/
static int
decode_gtp_rab_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 nsapi, dl_pdcp_seq, ul_pdcp_seq;
guint16 dl_gtpu_seq, ul_gtpu_seq;
proto_tree *ext_tree_rab_cntxt;
proto_item *te;
te = proto_tree_add_text(tree, tvb, offset, 8, val_to_str(GTP_EXT_RAB_CNTXT, gtp_val, "Unknown message"));
ext_tree_rab_cntxt = proto_item_add_subtree(te, ett_gtp_rab_cntxt);
nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
dl_gtpu_seq = tvb_get_ntohs(tvb, offset+2);
ul_gtpu_seq = tvb_get_ntohs(tvb, offset+4);
dl_pdcp_seq = tvb_get_guint8(tvb, offset+6);
ul_pdcp_seq = tvb_get_guint8(tvb, offset+7);
proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_dn, tvb, offset+2, 2, dl_gtpu_seq);
proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_gtpu_up, tvb, offset+4, 2, ul_gtpu_seq);
proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_dn, tvb, offset+6, 1, dl_pdcp_seq);
proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtpv1_rab_pdu_up, tvb, offset+7, 1, ul_pdcp_seq);
return 8;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.20, page 53
*/
static int
decode_gtp_rp_sms(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 rp_sms;
rp_sms = tvb_get_guint8(tvb, offset+1) & 0x07;
proto_tree_add_uint(tree, hf_gtpv1_rp_sms, tvb, offset, 2, rp_sms);
return 2;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.21, page 53
*/
static int
decode_gtp_rp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
proto_tree *ext_tree_rp;
proto_item *te;
guint8 nsapi, rp, spare;
nsapi = tvb_get_guint8(tvb, offset+1) & 0xF0;
spare = tvb_get_guint8(tvb, offset+1) & 0x08;
rp = tvb_get_guint8(tvb, offset+1) & 0x07;
te = proto_tree_add_uint_format(tree, hf_gtpv1_rp, tvb, offset, 2, rp, "Radio Priority for NSAPI(%u) : %u", nsapi, rp);
ext_tree_rp = proto_item_add_subtree(tree, ett_gtp_rp);
proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_nsapi, tvb, offset+1, 1, nsapi);
proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp_spare, tvb, offset+1, 1, spare);
proto_tree_add_uint(ext_tree_rp, hf_gtpv1_rp, tvb, offset+1, 1, rp);
return 2;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.22, page 53
*/
static int
decode_gtp_pkt_flow_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
proto_tree *ext_tree_pkt_flow_id;
proto_item *te;
guint8 nsapi, pkt_flow_id;
nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F;
pkt_flow_id = tvb_get_guint8(tvb, offset+2);
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);
ext_tree_pkt_flow_id = proto_item_add_subtree(tree, ett_gtp_pkt_flow_id);
proto_tree_add_uint(ext_tree_pkt_flow_id, hf_gtpv1_nsapi, tvb, offset+1, 1, nsapi);
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);
return 3;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.23, page 53
* TODO: Differenciate these uints?
*/
static int
decode_gtp_chrg_char(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 chrg_char;
proto_item *te;
proto_tree *ext_tree_chrg_char;
chrg_char = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, 3, "%s: %x", val_to_str(GTP_EXT_CHRG_CHAR, gtp_val, "Unknown message"), chrg_char);
ext_tree_chrg_char = proto_item_add_subtree(te, ett_gtp_chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_s, tvb, offset+1, 2, chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_n, tvb, offset+1, 2, chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_p, tvb, offset+1, 2, chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_f, tvb, offset+1, 2, chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_h, tvb, offset+1, 2, chrg_char);
proto_tree_add_uint(ext_tree_chrg_char, hf_gtpv1_chrg_char_r, tvb, offset+1, 2, chrg_char);
return 3;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.24, page
*/
static int
decode_gtp_trace_ref(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 trace_ref;
trace_ref = tvb_get_ntohs(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv1_trace_ref, tvb, offset, 3, trace_ref);
return 3;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.25, page
*/
static int
decode_gtp_trace_type(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 trace_type;
trace_type = tvb_get_ntohs(tvb, offset+1);
proto_tree_add_uint(tree, hf_gtpv1_trace_type, tvb, offset, 3, trace_type);
return 3;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.16A
* UMTS: 29.060 v4.0, chapter 7.7.25A, page
*/
static int
decode_gtp_ms_reason(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 reason;
reason = tvb_get_guint8(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_ms_reason : hf_gtpv0_ms_reason, tvb, offset, 2, reason);
return 2;
}
/* GPRS: 12.15 v7.6.0, chapter 7.3.3, page 45
* UMTS: 33.015
*/
static int
decode_gtp_tr_comm(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 tr_command;
tr_command = tvb_get_guint8(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_tr_comm : hf_gtpv0_tr_comm, tvb, offset, 2, tr_command);
return 2;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.17, page 43
* UMTS: 29.060 v4.0, chapter 7.7.26, page 55
*/
static int
decode_gtp_chrg_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint32 chrg_id;
chrg_id = tvb_get_ntohl(tvb, offset+1);
proto_tree_add_uint(tree, gtp_version ? hf_gtpv1_chrg_id : hf_gtpv0_chrg_id, tvb, offset, 5, chrg_id);
return 5;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.18, page 43
* UMTS: 29.060 v4.0, chapter 7.7.27, page 55
*/
static int
decode_gtp_user_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
guint8 pdp_typ, pdp_org;
guint32 addr_ipv4;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_user;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
pdp_org = tvb_get_guint8(tvb, offset+3) & 0x0F;
pdp_typ = tvb_get_guint8(tvb, offset+4);
te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s (%s/%s)",
val_to_str(GTP_EXT_USER_ADDR, gtp_val, "Unknown message"),
val_to_str(pdp_org, pdp_org_type, "Unknown PDP Organization"),
val_to_str(pdp_typ, pdp_type, "Unknown PDP Type"));
ext_tree_user = proto_item_add_subtree(te, ett_gtp_user);
proto_tree_add_text(ext_tree_user, tvb, offset+1, 2, "Length : %u", length);
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);
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);
if (length == 2) {
if (pdp_org == 0 && pdp_typ == 1)
proto_item_append_text(te, " (Point to Point Protocol)");
else if (pdp_typ == 2)
proto_item_append_text(te, " (Octet Stream Protocol)");
} else if (length > 2) {
switch (pdp_typ) {
case 0x21:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+5, sizeof addr_ipv4);
proto_tree_add_ipv4(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv4 : hf_gtpv0_user_ipv4, tvb, offset+5, 4, addr_ipv4);
proto_item_append_text(te, " : %s", ip_to_str((guint8 *)&addr_ipv4));
break;
case 0x57:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+5, sizeof addr_ipv6);
proto_tree_add_ipv6(ext_tree_user, gtp_version ? hf_gtpv1_user_ipv6 : hf_gtpv0_user_ipv6, tvb, offset+5, 16, (guint8 *)&addr_ipv6);
proto_item_append_text(te, " : %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
break;
}
} else
proto_item_append_text(te, " : empty PDP Address");
return 3+length;
}
static int
decode_triplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count) {
proto_tree *ext_tree_trip;
proto_item *te_trip;
guint16 i;
for (i=0;i<count;i++) {
te_trip = proto_tree_add_text(tree, tvb, offset+i*28, 28, "Triplet no%x", i);
ext_tree_trip = proto_item_add_subtree(te_trip, ett_gtp_trip);
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+i*28, 16));
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+i*28+16, 4));
proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+i*28+20, 8));
}
return count*28;
}
/* adjust - how many bytes before quintuplet should be highlighted
*/
static int
decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, guint8 adjust) {
proto_tree *ext_tree_quint;
proto_item *te_quint;
guint16 q_len, xres_len, auth_len, q_offset, i;
q_offset = 0;
for (i=0;i<count;i++) {
offset = offset + q_offset;
q_len = tvb_get_ntohs(tvb, offset);
te_quint = proto_tree_add_text(tree, tvb, offset-adjust, q_len+adjust, "Quintuplet #%x", i);
ext_tree_quint = proto_item_add_subtree(te_quint, ett_gtp_quint);
proto_tree_add_text(ext_tree_quint, tvb, offset, 2, "Length: %x", q_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+2, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+2, 16));
xres_len = tvb_get_ntohs(tvb, offset+18);
proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %u", xres_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES: %s", tvb_bytes_to_str(tvb, offset+20, xres_len));
proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %s", tvb_bytes_to_str(tvb, offset+20+xres_len, 16));
proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %s", tvb_bytes_to_str(tvb, offset+36+xres_len, 16));
auth_len = tvb_get_ntohs(tvb, offset+52+xres_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %u", auth_len);
proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH: %s", tvb_bytes_to_str(tvb, offset+54+xres_len, auth_len));
q_offset = q_offset + q_len + 2;
}
return q_offset;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.19 page
* UMTS: 29.060 v4.0, chapter 7.7.28 page 57
* TODO: - check if for quintuplets first 2 bytes are length, according to AuthQuint
* - finish displaying last 3 parameters
*/
static int
decode_gtp_mm_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, quint_len, net_cap, con_len;
guint8 cksn, count, sec_mode, cipher, trans_id, proto_disc, message, drx_split, drx_len, drx_ccch, non_drx_timer;
proto_tree *ext_tree_mm;
proto_item *te;
te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_MM_CNTXT, gtp_val, "Unknown message"));
ext_tree_mm = proto_item_add_subtree(te, ett_gtp_mm);
length = tvb_get_ntohs(tvb, offset+1);
if (length < 1) return 3;
cksn = tvb_get_guint8(tvb, offset+3) & 0x07;
sec_mode = (tvb_get_guint8(tvb, offset+4) >> 6) & 0x03;
count = (tvb_get_guint8(tvb, offset+4) >> 3) & 0x07;
cipher = tvb_get_guint8(tvb, offset+4) & 0x07;
proto_tree_add_text(ext_tree_mm, tvb, offset+1, 2, "Length: %x", length);
proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Ciphering Key Sequence Number: %u", cksn);
if (gtp_version != 0) {
proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Security type: %u", sec_mode);
} else {
sec_mode = 1;
}
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "No of triplets: %u", count);
switch (sec_mode) {
case 0:
if (cipher == 0) {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
} else {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
}
proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16));
proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16));
quint_len = tvb_get_ntohs(tvb, offset+37);
proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
break;
case 1:
if (cipher == 0) {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
} else {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
}
proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8));
offset = offset + decode_triplet(tvb, offset+13, ext_tree_mm, count) + 13;
break;
case 2:
proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16));
proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16));
quint_len = tvb_get_ntohs(tvb, offset+37);
proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len);
offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39;
break;
case 3:
if (cipher == 0) {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering");
} else {
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher);
}
proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8));
quint_len = tvb_get_ntohs(tvb, offset+13);
proto_tree_add_text(ext_tree_mm, tvb, offset+13, 2, "Quintuplets length: %x", quint_len);
offset = offset + decode_quintuplet(tvb, offset+15, ext_tree_mm, count, 0) + 15;
break;
default:
break;
}
drx_split = tvb_get_guint8(tvb, offset);
drx_len = (tvb_get_guint8(tvb, offset+1) >> 4) & 0x0F;
drx_ccch = (tvb_get_guint8(tvb, offset+1) >> 3) & 0x01;
non_drx_timer = tvb_get_guint8(tvb, offset+1) & 0x07;
net_cap = tvb_get_ntohs(tvb, offset+2);
con_len = tvb_get_ntohs(tvb, offset+4);
proto_tree_add_text(ext_tree_mm, tvb, offset, 1, "DRX: split PG cycle code: %u", drx_split);
proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: CN specific DRX cycle length coefficient: %u", drx_len);
proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: split PG cycle on CCCH supported by MS: %s", yesno[drx_ccch]);
if (non_drx_timer == 0) {
proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: no non-DRX mode after transfer state");
} else {
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);
}
proto_tree_add_text(ext_tree_mm, tvb, offset+2, 2, "MS network capability: %u", net_cap);
proto_tree_add_text(ext_tree_mm, tvb, offset+4, 2, "Container length: %u", con_len);
if (con_len > 0) {
trans_id = (tvb_get_guint8(tvb, offset+6) >> 4) & 0x0F;
proto_disc = tvb_get_guint8(tvb, offset+6) & 0x0F;
message = tvb_get_guint8(tvb, offset+7);
}
return 3+length;
}
/* Function to extract the value of an hexadecimal octet. Only the lower
* nybble will be non-zero in the output.
* */
static guint8 hex2dec (guint8 x)
{
if ((x >= 'a') && (x <= 'f'))
x = x - 'a' + 10;
else if ((x >= 'A') && (x <= 'F'))
x = x - 'A' + 10;
else if ((x >= '0') && (x <= '9'))
x = x - '0';
else
x = 0;
return x;
}
/* Wrapper function to add UTF-8 decoding for QoS attributes in
* RADIUS messages.
* */
static guint8 wrapped_tvb_get_guint8(
tvbuff_t *tvb, int offset, int type)
{
if (type == 2)
return (hex2dec(tvb_get_guint8(tvb, offset)) << 4
| hex2dec(tvb_get_guint8(tvb, offset + 1)));
else
return tvb_get_guint8(tvb, offset);
}
/* WARNING : actually length is coded on 2 octets for QoS profile but on 1 octet for PDP Context!
* so type means length of length :-)
*
* WARNING :) type does not mean length of length any more... see below for
* type = 3!
*/
int
decode_qos_umts(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 type) {
guint8 length;
guint8 al_ret_priority;
guint8 delay, reliability, peak, precedence, mean, spare1, spare2, spare3;
guint8 traf_class, del_order, del_err_sdu;
guint8 max_sdu_size, max_ul, max_dl;
guint8 res_ber, sdu_err_ratio;
guint8 trans_delay, traf_handl_prio;
guint8 guar_ul, guar_dl;
proto_tree *ext_tree_qos;
proto_item *te;
int mss, mu, md, gu, gd;
/* Will keep if the input is UTF-8 encoded (as in RADIUS messages).
* If 1, input is *not* UTF-8 encoded (i.e. each input octet corresponds
* to one byte to be dissected).
* If 2, input is UTF-8 encoded (i.e. each *couple* of input octets
* corresponds to one byte to be dissected)
* */
guint8 utf8_type = 1;
/* In RADIUS messages the QoS has a version field of two octets prepended.
* As of 29.061 v.3.a.0, there is an hyphen between "Release Indicator" and
* <release specific QoS IE UTF-8 encoding>. Even if it sounds rather
* inconsistent and unuseful, I will check hyphen presence here and
* will signal its presence.
* */
guint8 version_buffer[2];
guint8 hyphen;
/* Will keep the value that will be returned
* */
int retval = 0;
switch (type) {
case 1:
length = tvb_get_guint8 (tvb, offset);
te = proto_tree_add_text (tree, tvb, offset, length + 1, "%s", qos_str);
ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
proto_tree_add_text (ext_tree_qos, tvb, offset, 1, "Length: %u", length);
offset++;
retval = length + 1;
break;
case 2:
length = tvb_get_ntohs (tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, length + 3, "%s", qos_str);
ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Length: %u", length);
offset += 3; /* +1 because of first 0x86 byte for UMTS QoS */
retval = length + 3;
break;
case 3:
/* For QoS inside RADIUS Client messages from GGSN */
utf8_type = 2;
/* The field in the RADIUS message starts one byte before :) */
length = tvb_get_guint8 (tvb, offset);
te = proto_tree_add_text (tree, tvb, offset - 1, length, "%s", qos_str);
ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos);
version_buffer[0] = tvb_get_guint8(tvb, offset + 1);
version_buffer[1] = tvb_get_guint8(tvb, offset + 2);
proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Version: %c%c", version_buffer[0], version_buffer[1]);
/* Hyphen handling */
hyphen = tvb_get_guint8(tvb, offset + 3);
if (hyphen == ((guint8) '-'))
{
/* Hyphen is present, put in protocol tree */
proto_tree_add_text (ext_tree_qos, tvb, offset + 3, 1, "Hyphen separator: -");
offset++; /* "Get rid" of hyphen */
}
/* Now, we modify offset here and in order to use type later
* effectively.*/
offset += 2;
retval = length + 3; /* Actually, will be ignored. */
break;
default:
/* XXX - what should we do with the length here? */
length = 0;
retval = 0;
ext_tree_qos = NULL;
break;
}
/* In RADIUS messages there is no allocation-retention priority
* so I don't need to wrap the following call to tvb_get_guint8
* */
al_ret_priority = tvb_get_guint8 (tvb, offset);
/* All calls are wrapped to take into account the possibility that the
* input is UTF-8 encoded. If utf8_type is equal to 1, the final value
* of the offset will be the same as in the previous version of this
* dissector, and the wrapped function will serve as a dumb wrapper;
* otherwise, if utf_8_type is 2, the offset is correctly shifted by
* two bytes for needed shift, and the wrapped function will unencode
* two values from the input.
* */
spare1 = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0xC0;
delay = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x38;
reliability = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x07;
peak = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0xF0;
spare2 = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x08;
precedence = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x07;
spare3 = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0xE0;
mean = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0x1F;
/* In RADIUS messages there is no allocation-retention priority */
if (type != 3)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_al_ret_priority, tvb, offset, 1, al_ret_priority);
/* All additions must take care of the fact that QoS fields in RADIUS
* messages are UTF-8 encoded, so we have to use the same trick as above.
* */
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare1, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, spare1);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_delay, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, delay);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_reliability, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, reliability);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_peak, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, peak);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare2, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, spare2);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_precedence, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, precedence);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_spare3, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, spare3);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_mean, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, mean);
if (length > 4) {
/* See above for the need of wrapping
* */
traf_class = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0xE0;
del_order = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x18;
del_err_sdu = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x07;
max_sdu_size = wrapped_tvb_get_guint8(tvb, offset+(5 - 1) * utf8_type + 1, utf8_type);
max_ul = wrapped_tvb_get_guint8(tvb, offset+(6 - 1) * utf8_type + 1, utf8_type);
max_dl = wrapped_tvb_get_guint8(tvb, offset+(7 - 1) * utf8_type + 1, utf8_type);
res_ber = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0xF0;
sdu_err_ratio = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0x0F;
trans_delay = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0xFC;
traf_handl_prio = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0x03;
guar_ul = wrapped_tvb_get_guint8(tvb, offset+(10 - 1) * utf8_type + 1, utf8_type);
guar_dl = wrapped_tvb_get_guint8(tvb, offset+(11 - 1) * utf8_type + 1, utf8_type);
/* See above comments for the changes
* */
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_class, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, traf_class);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_order, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_order);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_del_err_sdu, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_err_sdu);
if (max_sdu_size == 0 || max_sdu_size > 150)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, max_sdu_size);
if (max_sdu_size > 0 && max_sdu_size <= 150) {
mss = max_sdu_size*10;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, mss, "Maximum SDU size : %u octets", mss);
}
if(max_ul == 0 || max_ul == 255)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul);
if(max_ul > 0 && max_ul <= 63)
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul, "Maximum bit rate for uplink : %u kbps", max_ul);
if(max_ul > 63 && max_ul <=127) {
mu = 64 + ( max_ul - 64 ) * 8;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu);
}
if(max_ul > 127 && max_ul <=254) {
mu = 576 + ( max_ul - 128 ) * 64;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu);
}
if(max_dl == 0 || max_dl == 255)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl);
if(max_dl > 0 && max_dl <= 63)
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl, "Maximum bit rate for downlink : %u kbps", max_dl);
if(max_dl > 63 && max_dl <=127) {
md = 64 + ( max_dl - 64 ) * 8;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md);
}
if(max_dl > 127 && max_dl <=254) {
md = 576 + ( max_dl - 128 ) * 64;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md);
}
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_res_ber, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, res_ber);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_sdu_err_ratio, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, sdu_err_ratio);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_trans_delay, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, trans_delay);
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_traf_handl_prio, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, traf_handl_prio);
if(guar_ul == 0 || guar_ul == 255)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul);
if(guar_ul > 0 && guar_ul <= 63)
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul, "Guaranteed bit rate for uplink : %u kbps", guar_ul);
if(guar_ul > 63 && guar_ul <=127) {
gu = 64 + ( guar_ul - 64 ) * 8;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
}
if(guar_ul > 127 && guar_ul <=254) {
gu = 576 + ( guar_ul - 128 ) * 64;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu);
}
if(guar_dl == 0 || guar_dl == 255)
proto_tree_add_uint(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl);
if(guar_dl > 0 && guar_dl <= 63)
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl, "Guaranteed bit rate for downlink : %u kbps", guar_dl);
if(guar_dl > 63 && guar_dl <=127) {
gd = 64 + ( guar_dl - 64 ) * 8;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
}
if(guar_dl > 127 && guar_dl <=254) {
gd = 576 + ( guar_dl - 128 ) * 64;
proto_tree_add_uint_format(ext_tree_qos, hf_gtpv1_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd);
}
}
return retval;
}
static void
decode_apn(tvbuff_t *tvb, int offset, guint16 length, proto_tree *tree) {
gchar *apn = NULL;
guint8 name_len, tmp;
if (length > 0) {
apn = g_malloc (length + 1);
name_len = tvb_get_guint8 (tvb, offset);
if (name_len < 0x20) {
tvb_memcpy (tvb, apn, offset + 1, length);
for (;;) {
if (name_len >= length - 1) break;
tmp = name_len;
name_len = name_len + apn[tmp] + 1;
apn[tmp] = '.';
}
} else {
tvb_memcpy (tvb, apn, offset, length);
}
apn[length-1] = '\0';
proto_tree_add_string(tree, gtp_version ? hf_gtpv1_apn : hf_gtpv0_apn, tvb, offset, length, apn);
g_free(apn);
}
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.20
* UMTS: 29.060 v4.0, chapter 7.7.29
* TODO: unify addr functions
*/
static int
decode_gtp_pdp_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 ggsn_addr_len, apn_len, trans_id, vaa, order, nsapi, sapi, pdu_send_no, pdu_rec_no, pdp_cntxt_id,
pdp_type_org, pdp_type_num, pdp_addr_len;
guint16 length, sn_down, sn_up, up_flow;
guint32 addr_ipv4, up_teid, up_teid_cp;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_pdp;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_PDP_CNTXT, gtp_val, "Unknown message"));
ext_tree_pdp = proto_item_add_subtree(te, ett_gtp_pdp);
vaa = (tvb_get_guint8(tvb, offset+3) >> 6) & 0x01;
order = (tvb_get_guint8(tvb, offset+3) >> 4) & 0x01;
nsapi = tvb_get_guint8(tvb, offset+3) & 0x0F;
sapi = tvb_get_guint8(tvb, offset+4) & 0x0F;
proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "VPLMN address allowed: %s", yesno[vaa]);
proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "Reordering required: %s", yesno[order]);
proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "NSAPI: %u", nsapi);
proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "SAPI: %u", sapi);
switch (gtp_version) {
case 0:
decode_qos_gprs(tvb, offset+5, ext_tree_pdp, "QoS subscribed", 0);
decode_qos_gprs(tvb, offset+8, ext_tree_pdp, "QoS requested", 0);
decode_qos_gprs(tvb, offset+11, ext_tree_pdp, "QoS negotiated", 0);
offset = offset + 14;
break;
case 1:
offset = offset + 5;
offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS subscribed", 1);
offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS requested", 1);
offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS negotiated", 1);
break;
default:
break;
}
sn_down = tvb_get_ntohs(tvb, offset);
sn_up = tvb_get_ntohs(tvb, offset+2);
pdu_send_no = tvb_get_guint8(tvb, offset+4);
pdu_rec_no = tvb_get_guint8(tvb, offset+5);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 2, "Sequence number down: %u", sn_down);
proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 2, "Sequence number up: %u", sn_up);
proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "Send N-PDU number: %u", pdu_send_no);
proto_tree_add_text(ext_tree_pdp, tvb, offset+5, 1, "Receive N-PDU number: %u", pdu_rec_no);
switch (gtp_version) {
case 0:
up_flow = tvb_get_ntohs(tvb, offset+6);
proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 2, "Uplink flow label signalling: %u", up_flow);
offset = offset + 8;
break;
case 1:
up_teid = tvb_get_ntohl(tvb, offset+6);
up_teid_cp = tvb_get_ntohl(tvb, offset+10);
pdp_cntxt_id = tvb_get_guint8(tvb, offset+14);
proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 4, "Uplink TEID: %x", up_teid);
proto_tree_add_text(ext_tree_pdp, tvb, offset+10, 4, "Uplink TEID control plane: %x", up_teid_cp);
proto_tree_add_text(ext_tree_pdp, tvb, offset+14, 1, "PDP context identifier: %u", pdp_cntxt_id);
offset = offset + 15;
break;
default:
break;
}
pdp_type_org = tvb_get_guint8(tvb, offset) & 0x0F;
pdp_type_num = tvb_get_guint8(tvb, offset+1);
pdp_addr_len = tvb_get_guint8(tvb, offset+2);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "PDP organization: %s", val_to_str(pdp_type_org, pdp_type, "Unknown PDP org"));
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"));
proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 1, "PDP address length: %u", pdp_addr_len);
if (pdp_addr_len > 0) {
switch (pdp_type_num) {
case 0x21:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 4, "PDP address: %s", ip_to_str((guint8 *)&addr_ipv4));
break;
case 0x57:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 16, "PDP address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
break;
default:
break;
}
}
offset = offset + 3 + pdp_addr_len;
ggsn_addr_len = tvb_get_guint8(tvb, offset);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN address length: %u", ggsn_addr_len);
switch (ggsn_addr_len) {
case 4:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN address: %s", ip_to_str((guint8 *)&addr_ipv4));
break;
case 16:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
break;
default:
break;
}
offset = offset + 1 + ggsn_addr_len;
if (gtp_version == 1) {
ggsn_addr_len = tvb_get_guint8(tvb, offset);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN 2 address length: %u", ggsn_addr_len);
switch (ggsn_addr_len) {
case 4:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4);
proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN 2 address: %s", ip_to_str((guint8 *)&addr_ipv4));
break;
case 16:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6);
proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN 2 address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
break;
default:
break;
}
offset = offset + 1 + ggsn_addr_len;
}
apn_len = tvb_get_guint8(tvb, offset);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "APN length: %u", apn_len);
decode_apn(tvb, offset+1, apn_len, ext_tree_pdp);
offset = offset + 1 + apn_len;
trans_id = tvb_get_guint8(tvb, offset);
proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "Transaction identifier: %u", trans_id);
return 3+length;
}
/* GPRS: 9.60, v7.6.0, chapter 7.9.21
* UMTS: 29.060, v4.0, chapter 7.7.30
*/
static int
decode_gtp_apn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
proto_tree *ext_tree_apn;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_APN, gtp_val, "Unknown field"));
ext_tree_apn = proto_item_add_subtree(te, ett_gtp_apn);
proto_tree_add_text(ext_tree_apn, tvb, offset+1, 2, "APN length : %u", length);
decode_apn(tvb, offset+3, length, ext_tree_apn);
return 3+length;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.22
* 4.08 v. 7.1.2, chapter 10.5.6.3 (p.580)
* UMTS: 29.060 v4.0, chapter 7.7.31
* 24.008, v4.2, chapter 10.5.6.3
*/
int
decode_gtp_proto_conf(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) {
guint16 length, proto_offset;
guint16 proto_id;
guint8 conf, proto_len, cnt = 1;
tvbuff_t *next_tvb;
proto_tree *ext_tree_proto;
proto_item *te;
gboolean save_writable;
length = tvb_get_ntohs(tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, length + 3, val_to_str(GTP_EXT_PROTO_CONF, gtp_val, "Unknown message"));
ext_tree_proto = proto_item_add_subtree(te, ett_gtp_proto);
proto_tree_add_text(ext_tree_proto, tvb, offset + 1, 2, "Length: %u", length);
if (length < 1) return 3;
conf = tvb_get_guint8 (tvb, offset + 3) & 0x07;
proto_tree_add_text (ext_tree_proto, tvb, offset + 3, 1, "Configuration protocol (00000xxx): %u", conf);
proto_offset = 1; /* ... 1st byte is conf */
offset += 4;
for (;;) {
if (proto_offset >= length) break;
proto_id = tvb_get_ntohs (tvb, offset);
proto_len = tvb_get_guint8 (tvb, offset + 2);
proto_offset += proto_len + 3; /* 3 = proto id + length byte */
if (proto_len > 0) {
proto_tree_add_text (ext_tree_proto, tvb, offset, 2, "Protocol %u ID: %s (0x%04x)",
cnt, val_to_str(proto_id, ppp_vals, "Unknown"),
proto_id);
proto_tree_add_text (ext_tree_proto, tvb, offset+2, 1, "Protocol %u length: %u", cnt, proto_len);
/*
* Don't allow the dissector for the configuration
* protocol in question to update the columns - this
* is GTP, not PPP.
*/
save_writable = col_get_writable(pinfo->cinfo);
col_set_writable(pinfo->cinfo, FALSE);
/*
* XXX - should we have our own dissector table,
* solely for configuration protocols, so that bogus
* values don't cause us to dissect the protocol
* data as, for example, IP?
*/
next_tvb = tvb_new_subset (tvb, offset + 3, proto_len, proto_len);
if (!dissector_try_port(ppp_subdissector_table,
proto_id, next_tvb, pinfo, ext_tree_proto)) {
call_dissector(data_handle, next_tvb, pinfo,
ext_tree_proto);
}
col_set_writable(pinfo->cinfo, save_writable);
}
offset += proto_len + 3;
cnt++;
}
return 3 + length;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.23
* UMTS: 29.060 v4.0, chapter 7.7.32
*/
static int
decode_gtp_gsn_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint8 addr_type, addr_len;
guint16 length;
guint32 addr_ipv4;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_gsn_addr;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, 3+length, "GSN address : ");
ext_tree_gsn_addr = proto_item_add_subtree(te, ett_gtp_gsn_addr);
switch (length) {
case 4:
proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+3, 4, addr_ipv4);
break;
case 5:
proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
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);
addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
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);
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+4, sizeof addr_ipv4);
proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
proto_tree_add_ipv4(ext_tree_gsn_addr, gtp_version ? hf_gtpv1_gsn_ipv4 : hf_gtpv0_gsn_ipv4, tvb, offset+4, 4, addr_ipv4);
break;
case 16:
proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length);
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
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);
break;
case 17:
proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length);
addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0;
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);
addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F;
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);
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+4, sizeof addr_ipv6);
proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
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);
break;
default:
proto_item_append_text(te, "unknown type or wrong length");
break;
}
return 3+length;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.24
* UMTS: 29.060 v4.0, chapter 7.7.33
*/
static int
decode_gtp_msisdn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
const guint8 *msisdn_val;
gchar *msisdn_str;
guint16 length;
length = tvb_get_ntohs(tvb, offset+1);
if (length < 1) return 3;
msisdn_val = tvb_get_ptr(tvb, offset+3, length);
msisdn_str = msisdn_to_str(msisdn_val, length);
proto_tree_add_string(tree, gtp_version ? hf_gtpv1_msisdn : hf_gtpv0_msisdn, tvb, offset, 3+length, msisdn_str);
return 3+length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.34
* 24.008 v4.2, chapter 10.5.6.5
*/
static int
decode_gtp_qos_umts(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
return decode_qos_umts(tvb, offset, tree, "Quality of Service", 2);
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.35
*/
static int
decode_gtp_auth_qui(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
return (1 + decode_quintuplet(tvb, offset+1, tree, 1, 1));
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.36
* 24.008 v4.2, chapter 10.5.6.12
*/
static int
decode_gtp_tft(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, port1, port2, tos;
guint8 tft_flags, tft_code, no_packet_filters, i, pf_id, pf_eval, pf_len, pf_content_id, proto, spare;
guint pf_offset;
guint32 mask_ipv4, addr_ipv4, ipsec_id, label;
struct e_in6_addr addr_ipv6, mask_ipv6;
proto_tree *ext_tree_tft, *ext_tree_tft_pf, *ext_tree_tft_flags;
proto_item *te, *tee, *tef;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, 3+length, "Traffic flow template");
ext_tree_tft = proto_item_add_subtree(te, ett_gtp_tft);
tft_flags = tvb_get_guint8(tvb, offset+3);
tft_code = (tft_flags >> 5) & 0x07;
spare = (tft_flags >> 4) & 0x01;
no_packet_filters = tft_flags & 0x0F;
proto_tree_add_text(ext_tree_tft, tvb, offset+1, 2, "TFT length: %u", length);
tef = proto_tree_add_text (ext_tree_tft, tvb, offset + 3, 1, "TFT flags");
ext_tree_tft_flags = proto_item_add_subtree (tef, ett_gtp_tft_flags);
proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_code, tvb, offset + 3, 1, tft_flags);
proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_spare, tvb, offset + 3, 1, tft_flags);
proto_tree_add_uint (ext_tree_tft_flags, hf_gtpv1_tft_number, tvb, offset + 3, 1, tft_flags);
offset = offset + 4;
for (i=0;i<no_packet_filters;i++) {
pf_id = tvb_get_guint8(tvb, offset);
tee = proto_tree_add_text (ext_tree_tft, tvb, offset, 1, "Packet filter id: %u", pf_id);
ext_tree_tft_pf = proto_item_add_subtree (tee, ett_gtp_tft_pf);
offset++;
if (tft_code != 2) {
pf_eval = tvb_get_guint8(tvb, offset);
pf_len = tvb_get_guint8(tvb, offset + 1);
proto_tree_add_uint (ext_tree_tft_pf, hf_gtpv1_tft_eval, tvb, offset, 1, pf_eval);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset+1, 1, "Content length: %u", pf_len);
offset = offset + 2;
pf_offset = 0;
while (pf_offset < pf_len) {
pf_content_id = tvb_get_guint8 (tvb, offset + pf_offset);
switch (pf_content_id) {
/* address IPv4 and mask = 8 bytes*/
case 0x10:
tvb_memcpy (tvb, (guint8 *)&addr_ipv4, offset + pf_offset + 1, sizeof addr_ipv4);
tvb_memcpy (tvb, (guint8 *)&mask_ipv4, offset + pf_offset + 5, sizeof mask_ipv4);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 9, "ID 0x10: IPv4/mask: %s/%s", ip_to_str ((guint8 *)&addr_ipv4), ip_to_str ((guint8 *)&mask_ipv4));
pf_offset = pf_offset + 9;
break;
/* address IPv6 and mask = 32 bytes*/
case 0x20:
tvb_memcpy (tvb, (guint8 *)&addr_ipv6, offset+pf_offset+1, sizeof addr_ipv6);
tvb_memcpy (tvb, (guint8 *)&mask_ipv6, offset+pf_offset+17, sizeof mask_ipv6);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset+pf_offset, 33, "ID 0x20: IPv6/mask: %s/%s", ip6_to_str ((struct e_in6_addr*)&addr_ipv6), ip6_to_str ((struct e_in6_addr*)&mask_ipv6));
pf_offset = pf_offset + 33;
break;
/* protocol identifier/next header type = 1 byte*/
case 0x30:
proto = tvb_get_guint8 (tvb, offset + pf_offset + 1);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x30: IPv4 protocol identifier/IPv6 next header: %u (%x)", proto, proto);
pf_offset = pf_offset + 2;
break;
/* single destination port type = 2 bytes */
case 0x40:
port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x40: destination port: %u", port1);
pf_offset = pf_offset + 3;
break;
/* destination port range type = 4 bytes */
case 0x41:
port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x41: destination port range: %u - %u", port1, port2);
pf_offset = pf_offset + 5;
break;
/* single source port type = 2 bytes */
case 0x50:
port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x50: source port: %u", port1);
pf_offset = pf_offset + 3;
break;
/* source port range type = 4 bytes */
case 0x51:
port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1);
port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x51: source port range: %u - %u", port1, port2);
pf_offset = pf_offset + 5;
break;
/* security parameter index type = 4 bytes */
case 0x60:
ipsec_id = tvb_get_ntohl (tvb, offset + pf_offset + 1);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x60: security parameter index: %x", ipsec_id);
pf_offset = pf_offset + 5;
break;
/* type of service/traffic class type = 2 bytes */
case 0x70:
tos = tvb_get_ntohs (tvb, offset + pf_offset + 1);
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x70: Type of Service/Traffic Class: %u (%x)", tos, tos);
pf_offset = pf_offset + 3;
break;
/* flow label type = 3 bytes */
case 0x80:
label = tvb_get_ntoh24(tvb, offset + pf_offset + 1) & 0x0FFFFF;;
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 4, "ID 0x80: Flow Label: %u (%x)", label, label);
pf_offset = pf_offset + 4;
break;
default:
proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 1, "Unknown value: %x ", pf_content_id);
pf_offset++; /* to avoid infinite loop */
break;
}
}
offset = offset + pf_offset;
}
}
return 3 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.37
* 25.413 v3.4, chapter ???
*/
static int
decode_gtp_target_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
length = tvb_get_ntohs(tvb, offset + 1);
proto_tree_add_text(tree, tvb, offset, 3 + length, "Targer Identification");
return 3 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.38
*/
static int
decode_gtp_utran_cont(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
length = tvb_get_ntohs(tvb, offset + 1);
proto_tree_add_text(tree, tvb, offset, 3 + length, "UTRAN transparent field");
return 3 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.39
*/
static int
decode_gtp_rab_setup(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint32 teid, addr_ipv4;
guint16 length;
guint8 nsapi;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_rab_setup;
proto_item *te;
length = tvb_get_ntohs(tvb, offset + 1);
nsapi = tvb_get_guint8(tvb, offset + 3) & 0x0F;
te = proto_tree_add_text(tree, tvb, offset, 3+length, "Radio Access Bearer Setup Information");
ext_tree_rab_setup = proto_item_add_subtree(te, ett_gtp_rab_setup);
proto_tree_add_text(ext_tree_rab_setup, tvb, offset+1, 2, "RAB setup length : %u", length);
proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_nsapi, tvb, offset+3, 1, nsapi);
if (length > 1) {
teid = tvb_get_ntohl(tvb, offset + 4);
proto_tree_add_uint(ext_tree_rab_setup, hf_gtpv1_teid_data, tvb, offset+4, 4, teid);
switch (length) {
case 12:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+8, sizeof addr_ipv4);
proto_tree_add_ipv4(ext_tree_rab_setup, hf_gtpv1_rnc_ipv4, tvb, offset+8, 4, addr_ipv4);
break;
case 24:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+8, sizeof addr_ipv6);
proto_tree_add_ipv6(ext_tree_rab_setup, hf_gtpv1_rnc_ipv6, tvb, offset+8, 16, (guint8 *)&addr_ipv6);
break;
default:
break;
}
}
return 3 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.40
*/
static int
decode_gtp_hdr_list(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
int i;
guint8 length, hdr;
proto_tree *ext_tree_hdr_list;
proto_item *te;
length = tvb_get_guint8(tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, 2+length, "%s", val_to_str(GTP_EXT_HDR_LIST, gtp_val, "Unknown"));
ext_tree_hdr_list = proto_item_add_subtree(te, ett_gtp_hdr_list);
proto_tree_add_text(ext_tree_hdr_list, tvb, offset+1, 1, "Number of Extension Header Types in list (i.e., length) : %u", length);
for(i=0 ; i<length ; i++) {
hdr = tvb_get_guint8(tvb, offset+2+i);
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);
}
return 2 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.41
* TODO: find TriggerID description
*/
static int
decode_gtp_trigger_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
length = tvb_get_ntohs(tvb, offset + 1);
proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_TRIGGER_ID, gtp_val, "Unknown"), length);
return 3 + length;
}
/* GPRS: not present
* UMTS: 29.060 v4.0, chapter 7.7.42
* TODO: find OMC-ID description
*/
static int
decode_gtp_omc_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
length = tvb_get_ntohs(tvb, offset + 1);
proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_OMC_ID, gtp_val, "Unknown"), length);
return 3 + length;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.25
* UMTS: 29.060 v4.0, chapter 7.7.43
*/
static int
decode_gtp_chrg_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
guint32 addr_ipv4;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_chrg_addr;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s : ", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown"));
ext_tree_chrg_addr = proto_item_add_subtree(te, ett_gtp_chrg_addr);
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);
switch (length) {
case 4:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
proto_tree_add_ipv4(ext_tree_chrg_addr, gtp_version ? hf_gtpv1_chrg_ipv4 : hf_gtpv0_chrg_ipv4, tvb, offset+3, 4, addr_ipv4);
break;
case 16:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
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);
break;
default:
proto_item_append_text(te, "unknown type or wrong length");
break;
}
return 3 + length;
}
/* GPRS: 12.15
* UMTS: 33.015
*/
static int
decode_gtp_rel_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, n, number;
proto_tree *ext_tree_rel_pack;
proto_item *te;
length = tvb_get_ntohs(tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of released packets IE");
ext_tree_rel_pack = proto_item_add_subtree(te, ett_gtp_rel_pack);
n = 0;
while (n < length) {
number = tvb_get_ntohs(tvb, offset + 3 + n);
proto_tree_add_text(ext_tree_rel_pack, tvb, offset + 3 + n, 2, "%u", number);
n = n + 2;
}
return 3 + length;
}
/* GPRS: 12.15
* UMTS: 33.015
*/
static int
decode_gtp_can_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, n, number;
proto_tree *ext_tree_can_pack;
proto_item *te;
length = tvb_get_ntohs(tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of cancelled packets IE");
ext_tree_can_pack = proto_item_add_subtree(te, ett_gtp_can_pack);
n = 0;
while (n < length) {
number = tvb_get_ntohs(tvb, offset + 3 + n);
proto_tree_add_text(ext_tree_can_pack, tvb, offset + 3 + n, 2, "%u", number);
n = n + 2;
}
return 3 + length;
}
/* CDRs dissector */
static int
decode_gtp_data_req(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, format_ver, data_len, i, j;
guint8 no, format, rectype;
proto_tree *ext_tree, *cdr_tree;
proto_item *te, *ce;
te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_DATA_REQ, gtp_val, "Unknown message"));
ext_tree = proto_item_add_subtree(te, ett_gtp_ext);
length = tvb_get_ntohs(tvb, offset + 1);
no = tvb_get_guint8(tvb, offset + 3);
format = tvb_get_guint8(tvb, offset + 4);
format_ver = tvb_get_ntohs(tvb, offset + 5);
proto_tree_add_text(ext_tree, tvb, offset+1, 2, "Length: %u", length);
proto_tree_add_text(ext_tree, tvb, offset+3, 1, "Number of data records: %u", no);
proto_tree_add_text(ext_tree, tvb, offset+4, 1, "Data record format: %u", format);
proto_tree_add_text(ext_tree, tvb, offset+5, 2, "Data record format version: %u", format_ver);
data_len = 0;
offset = offset + 7;
if (gtpv0_cdr_as != DONT_DISSECT_CDRS) {
for (i = 0; i < no; i++) {
data_len = tvb_get_ntohs(tvb, offset);
rectype = tvb_get_guint8(tvb, offset+2);
switch (rectype) {
case 0x13: /* GCDR */
if (tvb_length_remaining(tvb, offset) < 3 + 118) {
proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "GCDR fragmented, can't dissect");
break;
}
tvb_memcpy(tvb, gcdr.imsi, offset+3, 8);
tvb_memcpy(tvb, (guint8 *)&gcdr.ggsnaddr, offset+11, sizeof gcdr.ggsnaddr);
gcdr.chrgid = tvb_get_ntohl(tvb, offset+15);
tvb_memcpy(tvb, (guint8 *)&gcdr.sgsnaddr, offset+19, sizeof gcdr.sgsnaddr);
tvb_memcpy(tvb, gcdr.apn, offset+23, 63);
gcdr.pdporg = tvb_get_guint8(tvb, offset+86);
gcdr.pdptype = tvb_get_guint8(tvb, offset+87);
tvb_memcpy(tvb, (guint8 *)&gcdr.pdpaddr, offset+88, sizeof gcdr.pdpaddr);
gcdr.addrflag = tvb_get_guint8(tvb, offset+92);
gcdr.uplink = tvb_get_ntohl(tvb, offset+96);
gcdr.downlink = tvb_get_ntohl(tvb, offset+100);
gcdr.timestamp = tvb_get_ntohl(tvb, offset+104);
gcdr.opening = tvb_get_ntohl(tvb, offset+108);
gcdr.duration = tvb_get_ntohl(tvb, offset+112);
gcdr.closecause = tvb_get_guint8(tvb, offset+116);
gcdr.seqno = tvb_get_ntohl(tvb, offset+117);
ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "GCDR (0x13), sequence number: %u", gcdr.seqno);
cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
proto_tree_add_text(cdr_tree, tvb, offset+3, 8, "IMSI: %s", id_to_str(gcdr.imsi));
proto_tree_add_text(cdr_tree, tvb, offset+11, 4, "GGSN address: %s", ip_to_str((guint8 *)&gcdr.ggsnaddr));
proto_tree_add_text(cdr_tree, tvb, offset+15, 4, "Charging ID: %x", gcdr.chrgid);
proto_tree_add_text(cdr_tree, tvb, offset+19, 4, "SGSN address: %s", ip_to_str((guint8 *)&gcdr.sgsnaddr));
proto_tree_add_text(cdr_tree, tvb, offset+23, 63, "APN: %s", gcdr.apn);
proto_tree_add_text(cdr_tree, tvb, offset+86, 1, "PDP org: %s", val_to_str(gcdr.pdporg, pdp_org_type, "Unknown PDP org"));
proto_tree_add_text(cdr_tree, tvb, offset+87, 1, "PDP type: %s", val_to_str(gcdr.pdptype, pdp_type, "Unknown PDP type"));
proto_tree_add_text(cdr_tree, tvb, offset+88, 4, "PDP address: %s", ip_to_str((guint8 *)&gcdr.pdpaddr));
proto_tree_add_text(cdr_tree, tvb, offset+92, 1, "PDP address type: %u", gcdr.addrflag);
decode_qos_gprs(tvb, offset+93, cdr_tree, "QoS", 0);
proto_tree_add_text(cdr_tree, tvb, offset+96, 4, "Uplink volume: %u", gcdr.uplink);
proto_tree_add_text(cdr_tree, tvb, offset+100, 4, "Downlink volume: %u", gcdr.downlink);
proto_tree_add_text(cdr_tree, tvb, offset+104, 4, "Timestamp: %s", time_int_to_str(gcdr.timestamp));
proto_tree_add_text(cdr_tree, tvb, offset+108, 4, "Record opening time: %s", time_int_to_str(gcdr.opening));
proto_tree_add_text(cdr_tree, tvb, offset+112, 4, "Duration: %s", rel_time_int_to_str(gcdr.duration));
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);
proto_tree_add_text(cdr_tree, tvb, offset+117, 4, "Sequence number: %u", gcdr.seqno);
if (data_len > 119) {
tvb_memcpy (tvb, gcdr.msisdn, offset + 121, 9);
proto_tree_add_text(cdr_tree, tvb, offset+121, 9, "MSISDN: %s", msisdn_to_str (gcdr.msisdn, 9));
}
break;
case 0x12: /* SCDR */
if (tvb_length_remaining(tvb, offset) < 3 + 277) {
proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SCDR fragmented, can't dissect");
break;
}
scdr.len = tvb_get_letohs(tvb, offset+3);
scdr.netini = tvb_get_guint8(tvb, offset+5);
scdr.anon = tvb_get_guint8(tvb, offset+6);
scdr.imsilen = tvb_get_guint8(tvb, offset+7);
tvb_memcpy(tvb, scdr.imsi, offset+8, 8);
tvb_memcpy(tvb, scdr.imei, offset+16, 8);
scdr.msisdnlen = tvb_get_guint8(tvb, offset+24);
tvb_memcpy(tvb, scdr.msisdn, offset+25, 10);
tvb_memcpy(tvb, (guint8 *)&scdr.sgsnaddr, offset+35, sizeof scdr.sgsnaddr);
tvb_memcpy(tvb, scdr.msclass_notused, offset+39, 12);
scdr.msclass_caplen = tvb_get_guint8(tvb, offset+51);
scdr.msclass_cap = tvb_get_guint8(tvb, offset+52);
scdr.msclass_capomit = tvb_get_ntohs(tvb, offset+53);
scdr.lac = tvb_get_ntohs(tvb, offset+55);
scdr.rac = tvb_get_guint8(tvb, offset+57);
scdr.cid = tvb_get_ntohs(tvb, offset+58);
scdr.chrgid = tvb_get_ntohl(tvb, offset+60);
tvb_memcpy(tvb, (guint8 *)&scdr.ggsnaddr, offset+64, sizeof scdr.ggsnaddr);
tvb_memcpy(tvb, scdr.apn, offset+68, 64);
scdr.pdporg = tvb_get_guint8(tvb, offset+132);
scdr.pdptype = tvb_get_guint8(tvb, offset+133);
tvb_memcpy(tvb, (guint8 *)&scdr.pdpaddr, offset+134, sizeof scdr.pdpaddr);
scdr.listind = tvb_get_guint8(tvb, offset+138);
for (j=0;j<4;j++) {
scdr.change[j].change = tvb_get_guint8(tvb, offset+139+23*j);
scdr.change[j].time1 = tvb_get_ntohl(tvb, offset+140+23*j);
scdr.change[j].time2 = tvb_get_ntohl(tvb, offset+144+23*j);
scdr.change[j].uplink = tvb_get_ntohl(tvb, offset+148+23*j);
scdr.change[j].downlink = tvb_get_ntohl(tvb, offset+152+23*j);
/* tvb_memcpy(tvb, scdr.change[j].qos_req, offset+156+23*j, 3);
tvb_memcpy(tvb, scdr.change[j].qos_neg, offset+159+23*j, 3);*/
}
scdr.timestamp = tvb_get_ntohl(tvb, offset+254);
scdr.opening = tvb_get_ntohl(tvb, offset+258);
scdr.duration = tvb_get_ntohl(tvb, offset+262);
scdr.sgsnchange = tvb_get_guint8(tvb, offset+266);
scdr.closecause = tvb_get_guint8(tvb, offset+267);
scdr.diag1 = tvb_get_guint8(tvb, offset+268);
scdr.diag2 = tvb_get_guint8(tvb, offset+269);
scdr.diag3 = tvb_get_guint8(tvb, offset+270);
scdr.diag4 = tvb_get_guint8(tvb, offset+271);
scdr.diag5 = tvb_get_ntohl(tvb, offset+272);
scdr.seqno = tvb_get_ntohl(tvb, offset+276);
ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SCDR (type %x), sequence number: %u", rectype, scdr.seqno);
cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "CDR length: %u", scdr.len);
proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "Network initiated PDP context: %s", yesno[scdr.netini]);
proto_tree_add_text(cdr_tree, tvb, offset+6, 1, "Anonymous acces: %s", yesno[scdr.anon]);
proto_tree_add_text(cdr_tree, tvb, offset+7, 1, "IMSI length: %u", scdr.imsilen);
proto_tree_add_text(cdr_tree, tvb, offset+8, 8, "IMSI: %s", id_to_str(scdr.imsi));
proto_tree_add_text(cdr_tree, tvb, offset+16, 8, "IMEI: %s", id_to_str(scdr.imei));
proto_tree_add_text(cdr_tree, tvb, offset+24, 1, "MSISDN length: %u", scdr.msisdnlen);
proto_tree_add_text(cdr_tree, tvb, offset+25, 10, "MSISDN: %s", msisdn_to_str(scdr.msisdn, 10));
proto_tree_add_text(cdr_tree, tvb, offset+35, 4, "SGSN address: %s", ip_to_str((guint8 *)&scdr.sgsnaddr));
proto_tree_add_text(cdr_tree, tvb, offset+39, 12, "(not used)");
proto_tree_add_text(cdr_tree, tvb, offset+51, 1, "MS network capability length: %u", scdr.msclass_caplen);
/* cap_id = proto_tree_add_text(cdr_tree, tvb, offset+52, 1, "MS network capability: %u", scdr.msclass_cap);
cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+52, 1, scdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+52, 1, scdr.cap);
*/
proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "MS network capability omitted: %u", scdr.msclass_capomit);
proto_tree_add_text(cdr_tree, tvb, offset+55, 2, "LAC: %u", scdr.lac);
proto_tree_add_text(cdr_tree, tvb, offset+57, 1, "RAC: %u", scdr.rac);
proto_tree_add_text(cdr_tree, tvb, offset+58, 2, "Cell ID: %u", scdr.cid);
proto_tree_add_text(cdr_tree, tvb, offset+60, 4, "Charging ID: %x", scdr.chrgid);
proto_tree_add_text(cdr_tree, tvb, offset+64, 4, "GGSN address: %s", ip_to_str((guint8 *)&scdr.ggsnaddr));
proto_tree_add_text(cdr_tree, tvb, offset+68, 64, "APN: %s", scdr.apn);
proto_tree_add_text(cdr_tree, tvb, offset+132, 1, "PDP org: %s", val_to_str(scdr.pdporg, pdp_org_type, "Unknown PDP org"));
proto_tree_add_text(cdr_tree, tvb, offset+133, 1, "PDP type: %s", val_to_str(scdr.pdptype, pdp_type, "Unknown PDP type"));
proto_tree_add_text(cdr_tree, tvb, offset+134, 4, "PDP address: %s", ip_to_str((guint8 *)&scdr.pdpaddr));
proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "List of data volume index: %u", scdr.listind);
for (j=0;j<4;j++) {
proto_tree_add_text(cdr_tree, tvb, offset+139+23*j, 1, "List of data vol change condition: %u", scdr.change[j].change);
proto_tree_add_text(cdr_tree, tvb, offset+140+23*j, 4, "Time1: %x", scdr.change[j].time1);
proto_tree_add_text(cdr_tree, tvb, offset+144+23*j, 4, "Time2: %x", scdr.change[j].time2);
proto_tree_add_text(cdr_tree, tvb, offset+148+23*j, 4, "Uplink: %x", scdr.change[j].uplink);
proto_tree_add_text(cdr_tree, tvb, offset+152+23*j, 4, "Downlink: %x", scdr.change[j].downlink);
decode_qos_gprs(tvb, offset+156, cdr_tree, "QoS requested", 0);
decode_qos_gprs(tvb, offset+159, cdr_tree, "QoS negotiated", 0);
}
proto_tree_add_text(cdr_tree, tvb, offset+254, 4, "Timestamp: %s", time_int_to_str(scdr.timestamp));
proto_tree_add_text(cdr_tree, tvb, offset+258, 4, "Opening: %s", time_int_to_str(scdr.opening));
proto_tree_add_text(cdr_tree, tvb, offset+262, 4, "Duration: %s", rel_time_int_to_str(scdr.duration));
proto_tree_add_text(cdr_tree, tvb, offset+266, 1, "SGSN change: %u", scdr.sgsnchange);
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);
proto_tree_add_text(cdr_tree, tvb, offset+268, 1, "Diagnostics 1: %u", scdr.diag1);
proto_tree_add_text(cdr_tree, tvb, offset+269, 1, "Diagnostics 2: %u", scdr.diag2);
proto_tree_add_text(cdr_tree, tvb, offset+270, 1, "Diagnostics 3: %u", scdr.diag3);
proto_tree_add_text(cdr_tree, tvb, offset+271, 1, "Diagnostics 4: %u", scdr.diag4);
proto_tree_add_text(cdr_tree, tvb, offset+272, 4, "Diagnostics 5: %u", scdr.diag5);
proto_tree_add_text(cdr_tree, tvb, offset+276, 4, "Sequence number: %u", scdr.seqno);
break;
case 0x14: /* MCDR */
if (tvb_length_remaining(tvb, offset) < 3 + 147) {
proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "MCDR fragmented, can't dissect");
break;
}
mcdr.len = tvb_get_ntohs(tvb, offset+3);
mcdr.imsilen = tvb_get_guint8(tvb, offset+5);
tvb_memcpy(tvb, mcdr.imsi, offset+6, 8);
tvb_memcpy(tvb, mcdr.imei, offset+14, 8);
mcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
tvb_memcpy(tvb, mcdr.msisdn, offset+23, 10);
tvb_memcpy(tvb, (guint8 *)&mcdr.sgsnaddr, offset+33, sizeof mcdr.sgsnaddr);
tvb_memcpy(tvb, mcdr.msclass_notused, offset+37, 12);
mcdr.msclass_caplen = tvb_get_guint8(tvb, offset+49);
mcdr.msclass_cap = tvb_get_guint8(tvb, offset+50);
mcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+51);
mcdr.lac = tvb_get_ntohs(tvb, offset+53);
mcdr.rac = tvb_get_guint8(tvb, offset+55);
mcdr.cid = tvb_get_ntohs(tvb, offset+56);
mcdr.change_count = tvb_get_guint8(tvb, offset+58);
for (j=0;j<4;j++) {
mcdr.change[j].lac = tvb_get_ntohs(tvb, offset+59+13*j);
mcdr.change[j].rac = tvb_get_guint8(tvb, offset+61+13*j);
mcdr.change[j].cid = tvb_get_ntohs(tvb, offset+62+13*j);
tvb_memcpy(tvb, mcdr.change[j].omit, offset+64+13*j, 8);
}
mcdr.timestamp = tvb_get_ntohl(tvb, offset+124);
mcdr.opening = tvb_get_ntohl(tvb, offset+128);
mcdr.duration = tvb_get_ntohl(tvb, offset+132);
mcdr.sgsnchange = tvb_get_guint8(tvb, offset+136);
mcdr.closecause = tvb_get_guint8(tvb, offset+137);
mcdr.diag1 = tvb_get_guint8(tvb, offset+138);
mcdr.diag2 = tvb_get_guint8(tvb, offset+139);
mcdr.diag3 = tvb_get_guint8(tvb, offset+140);
mcdr.diag4 = tvb_get_guint8(tvb, offset+141);
mcdr.diag5 = tvb_get_ntohl(tvb, offset+142);
mcdr.seqno = tvb_get_ntohl(tvb, offset+146);
ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "MCDR (0x14), sequence number: %u", mcdr.seqno);
cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", mcdr.len);
proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", mcdr.imsilen);
proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(mcdr.imsi));
proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(mcdr.imei));
proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", mcdr.msisdnlen);
proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(mcdr.msisdn, 10));
proto_tree_add_text(cdr_tree, tvb, offset+33, 4, "SGSN address: %s", ip_to_str((guint8 *)&mcdr.sgsnaddr));
proto_tree_add_text(cdr_tree, tvb, offset+37, 12, "(not used)");
proto_tree_add_text(cdr_tree, tvb, offset+49, 1, "MS network capability length: %u", mcdr.msclass_caplen);
/* cap_id = proto_tree_add_text(cdr_tree, tvb, offset+50, 1, "MS network capability: %u", mcdr.msclass_cap);
cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+50, 1, mcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_pad, tvb, offset+50, 1, mcdr.cap);
*/
proto_tree_add_text(cdr_tree, tvb, offset+51, 2, "MS network capability omitted: %u", mcdr.msclass_capomit);
proto_tree_add_text(cdr_tree, tvb, offset+53, 2, "LAC: %u", mcdr.lac);
proto_tree_add_text(cdr_tree, tvb, offset+55, 1, "RAC: %u", mcdr.rac);
proto_tree_add_text(cdr_tree, tvb, offset+56, 2, "Cell ID: %u", mcdr.cid);
proto_tree_add_text(cdr_tree, tvb, offset+58, 1, "List of data volume changes: %u", mcdr.change_count);
for (j=0;j<4;j++) {
proto_tree_add_text(cdr_tree, tvb, offset+59+13*j, 2, "LAC: %u", mcdr.change[j].lac);
proto_tree_add_text(cdr_tree, tvb, offset+61+13*j, 1, "RAC: %u", mcdr.change[j].rac);
proto_tree_add_text(cdr_tree, tvb, offset+62+13*j, 2, "CID: %u", mcdr.change[j].cid);
proto_tree_add_text(cdr_tree, tvb, offset+64+13*j, 8, "(omitted)");
}
proto_tree_add_text(cdr_tree, tvb, offset+124, 4, "Timestamp: %s", time_int_to_str(mcdr.timestamp));
proto_tree_add_text(cdr_tree, tvb, offset+128, 4, "Record opening time: %s", time_int_to_str(mcdr.opening));
proto_tree_add_text(cdr_tree, tvb, offset+132, 4, "Duration: %s", rel_time_int_to_str(mcdr.duration));
proto_tree_add_text(cdr_tree, tvb, offset+136, 1, "SGSN change: %u", mcdr.sgsnchange);
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);
proto_tree_add_text(cdr_tree, tvb, offset+138, 1, "Diagnostics 1: %u", mcdr.diag1);
proto_tree_add_text(cdr_tree, tvb, offset+139, 1, "Diagnostics 2: %u", mcdr.diag2);
proto_tree_add_text(cdr_tree, tvb, offset+140, 1, "Diagnostics 3: %u", mcdr.diag3);
proto_tree_add_text(cdr_tree, tvb, offset+141, 1, "Diagnostics 4: %u", mcdr.diag4);
proto_tree_add_text(cdr_tree, tvb, offset+142, 4, "Diagnostics 5: %u", mcdr.diag5);
proto_tree_add_text(cdr_tree, tvb, offset+146, 4, "Sequence number: %u", mcdr.seqno);
break;
case 0x15: /* SOCDR */
if (tvb_length_remaining(tvb, offset) < 3 + 80) {
proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "SOCDR fragmented, can't dissect");
break;
}
socdr.len = tvb_get_ntohs(tvb, offset+3);
socdr.imsilen = tvb_get_guint8(tvb, offset+5);
tvb_memcpy(tvb, socdr.imsi, offset+6, 8);
tvb_memcpy(tvb, socdr.imei, offset+14, 8);
socdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
tvb_memcpy(tvb, socdr.msisdn, offset+23, 10);
tvb_memcpy(tvb, socdr.msclass_notused, offset+33, 12);
socdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
socdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
socdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
tvb_memcpy(tvb, socdr.serv_centr, offset+49, 9);
tvb_memcpy(tvb, socdr.rec_ent, offset+58, 9);
socdr.lac = tvb_get_ntohs(tvb, offset+67);
socdr.rac = tvb_get_guint8(tvb, offset+69);
socdr.cid = tvb_get_ntohs(tvb, offset+70);
socdr.time1 = tvb_get_ntohl(tvb, offset+72);
socdr.time2 = tvb_get_ntohl(tvb, offset+76);
socdr.messref = tvb_get_guint8(tvb, offset+80);
socdr.smsres = tvb_get_ntohs(tvb, offset+81);
ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "SOCDR (0x15)");
cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", socdr.len);
proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", socdr.imsilen);
proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(socdr.imsi));
proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(socdr.imei));
proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", socdr.msisdnlen);
proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(socdr.msisdn, 10));
proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", socdr.msclass_caplen);
/* cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", socdr.msclass_cap);
cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, socdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, socdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, socdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, socdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, socdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, socdr.cap);
*/
proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(socdr.serv_centr, 9));
proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(socdr.rec_ent, 9));
proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", socdr.lac);
proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", socdr.rac);
proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", socdr.cid);
proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(socdr.time1));
proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(socdr.time2));
proto_tree_add_text(cdr_tree, tvb, offset+80, 1, "Message reference: %u", socdr.messref);
proto_tree_add_text(cdr_tree, tvb, offset+81, 2, "Delivery result: %u", socdr.smsres);
break;
case 0x16: /* STCDR */
if (tvb_length_remaining(tvb, offset) < 3 + 79) {
proto_tree_add_text(ext_tree, tvb, offset, tvb_length_remaining(tvb, offset), "STCDR fragmented, can't dissect");
break;
}
stcdr.len = tvb_get_ntohs(tvb, offset+3);
stcdr.imsilen = tvb_get_guint8(tvb, offset+5);
tvb_memcpy(tvb, stcdr.imsi, offset+6, 8);
tvb_memcpy(tvb, stcdr.imei, offset+14, 8);
stcdr.msisdnlen = tvb_get_guint8(tvb, offset+22);
tvb_memcpy(tvb, stcdr.msisdn, offset+23, 10);
tvb_memcpy(tvb, stcdr.msclass_notused, offset+33, 12);
stcdr.msclass_caplen = tvb_get_guint8(tvb, offset+45);
stcdr.msclass_cap = tvb_get_guint8(tvb, offset+46);
stcdr.msclass_capomit = tvb_get_ntohs(tvb, offset+47);
tvb_memcpy(tvb, stcdr.serv_centr, offset+49, 9);
tvb_memcpy(tvb, stcdr.rec_ent, offset+58, 9);
stcdr.lac = tvb_get_ntohs(tvb, offset+67);
stcdr.rac = tvb_get_guint8(tvb, offset+69);
stcdr.cid = tvb_get_ntohs(tvb, offset+70);
stcdr.time1 = tvb_get_ntohl(tvb, offset+72);
stcdr.time2 = tvb_get_ntohl(tvb, offset+76);
stcdr.smsres = tvb_get_ntohs(tvb, offset+80);
ce = proto_tree_add_text(ext_tree, tvb, offset, data_len + 2, "STCDR (0x16)");
cdr_tree = proto_item_add_subtree(ce, ett_gtp_ext);
proto_tree_add_text(cdr_tree, tvb, offset, 2, "Length: %u", data_len);
proto_tree_add_text(cdr_tree, tvb, offset+2, 1, "Type: %u (%x)", rectype, rectype);
proto_tree_add_text(cdr_tree, tvb, offset+3, 2, "MCDR length: %u", stcdr.len);
proto_tree_add_text(cdr_tree, tvb, offset+5, 1, "IMSI length: %u", stcdr.imsilen);
proto_tree_add_text(cdr_tree, tvb, offset+6, 8, "IMSI: %s", id_to_str(stcdr.imsi));
proto_tree_add_text(cdr_tree, tvb, offset+14, 8, "IMEI: %s", id_to_str(stcdr.imei));
proto_tree_add_text(cdr_tree, tvb, offset+22, 1, "MSISDN length: %u", stcdr.msisdnlen);
proto_tree_add_text(cdr_tree, tvb, offset+23, 10, "MSISDN: %s", msisdn_to_str(stcdr.msisdn, 10));
proto_tree_add_text(cdr_tree, tvb, offset+33, 12, "(not used)");
proto_tree_add_text(cdr_tree, tvb, offset+45, 1, "MS network capability length: %u", stcdr.msclass_caplen);
/* cap_id = proto_tree_add_text(cdr_tree, tvb, offset+46, 1, "MS network capability: %u", stcdr.msclass_cap);
cap_tree = proto_item_add_subtree(cap_id, ett_chrg_cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_gea, tvb, offset+46, 1, stcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gsm, tvb, offset+46, 1, stcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_sm_gprs, tvb, offset+46, 1, stcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ucs2, tvb, offset+46, 1, stcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_ss, tvb, offset+46, 1, stcdr.cap);
proto_tree_add_uint(cap_tree, hf_gtpv0_chrg_cap_solsa, tvb, offset+46, 1, stcdr.cap);
*/
proto_tree_add_text(cdr_tree, tvb, offset+47, 2, "MS network capability omitted: %u", stcdr.msclass_capomit);
proto_tree_add_text(cdr_tree, tvb, offset+49, 9, "SMSC E.164 address: %s", msisdn_to_str(stcdr.serv_centr, 9));
proto_tree_add_text(cdr_tree, tvb, offset+58, 9, "SGSN E.164 address: %s", msisdn_to_str(stcdr.rec_ent, 9));
proto_tree_add_text(cdr_tree, tvb, offset+67, 2, "LAC: %u", stcdr.lac);
proto_tree_add_text(cdr_tree, tvb, offset+69, 1, "RAC: %u", stcdr.rac);
proto_tree_add_text(cdr_tree, tvb, offset+70, 2, "Cell ID: %u", stcdr.cid);
proto_tree_add_text(cdr_tree, tvb, offset+72, 4, "Time1: %s", time_int_to_str(stcdr.time1));
proto_tree_add_text(cdr_tree, tvb, offset+76, 4, "Time2: %s", time_int_to_str(stcdr.time2));
proto_tree_add_text(cdr_tree, tvb, offset+80, 2, "Delivery result: %u", stcdr.smsres);
break;
}
offset = offset + 2 + data_len;
}
}
return 3+length;
}
/* GPRS: 12.15
* UMTS: 33.015
*/
static int
decode_gtp_data_resp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, n, number;
proto_tree *ext_tree_data_resp;
proto_item *te;
length = tvb_get_ntohs(tvb, offset + 1);
te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Requests responded");
ext_tree_data_resp = proto_item_add_subtree(te, ett_gtp_data_resp);
n = 0;
while (n < length) {
number = tvb_get_ntohs(tvb, offset + 3 + n);
proto_tree_add_text(ext_tree_data_resp, tvb, offset + 3 + n, 2, "%u", number);
n = n + 2;
}
return 3 + length;
}
/* GPRS: 12.15
* UMTS: 33.015
*/
static int
decode_gtp_node_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length;
guint32 addr_ipv4;
struct e_in6_addr addr_ipv6;
proto_tree *ext_tree_node_addr;
proto_item *te;
length = tvb_get_ntohs(tvb, offset+1);
te = proto_tree_add_text(tree, tvb, offset, 3+length, "Node address: ");
ext_tree_node_addr = proto_item_add_subtree(te, ett_gtp_node_addr);
proto_tree_add_text(ext_tree_node_addr, tvb, offset+1, 2, "Node address length: %u", length);
switch (length) {
case 4:
tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4);
proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4));
proto_tree_add_ipv4(ext_tree_node_addr, gtp_version ? hf_gtpv1_node_ipv4 : hf_gtpv0_node_ipv4, tvb, offset+3, 4, addr_ipv4);
break;
case 16:
tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6);
proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6));
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);
break;
default:
proto_item_append_text(te, "unknown type or wrong length");
break;
}
return 3 + length;
}
/* GPRS: 9.60 v7.6.0, chapter 7.9.26
* UMTS: 29.060 v4.0, chapter 7.7.44
*/
static int
decode_gtp_priv_ext(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
guint16 length, ext_id;
gchar ext_val[64];
proto_tree *ext_tree_priv_ext;
proto_item *te;
te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_PRIV_EXT, gtp_val, "Unknown message"));
ext_tree_priv_ext = proto_item_add_subtree(te, ett_gtp_ext);
length = tvb_get_ntohs(tvb, offset+1);
if (length < 1) return 3+length;
ext_id = tvb_get_ntohs(tvb, offset+3);
tvb_memcpy(tvb, ext_val, offset+5, length > 65 ? 63 : length-2);
ext_val[length > 65 ? 64 : length-1] = '\0';
proto_tree_add_uint(ext_tree_priv_ext, gtp_version ? hf_gtpv1_ext_id : hf_gtpv0_ext_id, tvb, offset+3, 2, ext_id);
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);
return 3+length;
}
static int
decode_gtp_unknown(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) {
proto_tree_add_text(tree, tvb, offset, 1, "Unknown extension header");
return tvb_length_remaining(tvb, offset);
}
static void
dissect_gtpv0(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
_gtpv0_hdr gtpv0_hdr;
proto_item *ti, *tf;
proto_tree *gtpv0_tree, *flags_tree;
guint8 ext_hdr_val;
tvbuff_t *next_tvb;
const guint8 *tid_val;
gchar *tid_str;
int offset, length, i, mandatory, checked_field, gtp_prime = 0;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
if (check_col(pinfo->cinfo, COL_INFO))
col_clear(pinfo->cinfo, COL_INFO);
tvb_memcpy(tvb, (guint8 *)&gtpv0_hdr, 0, 12);
tid_val = tvb_get_ptr(tvb, 12, 8);
tid_str = id_to_str(tid_val);
gtp_version = (gtpv0_hdr.flags >> 5) & 0x07;
if (!((gtpv0_hdr.flags >> 4) & 1)) {
gtp_prime = 1;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-CDR");
} else {
switch ((gtpv0_hdr.flags >> 5) & 0x07) {
case 0: if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP");
break;
case 1: if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv1");
default: if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv?");
break;
}
}
if (check_col(pinfo->cinfo, COL_INFO))
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv0_hdr.message, message_type, "Unknown"));
if (tree) {
/* dissect GTP header */
ti = proto_tree_add_item(tree, proto_gtpv0, tvb, 0, -1, FALSE);
gtpv0_tree = proto_item_add_subtree(ti, ett_gtp);
tf = proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flags, tvb, 0, 1, gtpv0_hdr.flags);
flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
proto_tree_add_uint(flags_tree, hf_gtpv0_flags_ver, tvb, 0, 1, gtpv0_hdr.flags);
proto_tree_add_uint(flags_tree, hf_gtpv0_flags_pt, tvb, 0, 1, gtpv0_hdr.flags);
proto_tree_add_uint(flags_tree, hf_gtpv0_flags_spare, tvb, 0, 1, gtpv0_hdr.flags);
proto_tree_add_boolean(flags_tree, hf_gtpv0_flags_snn, tvb, 0, 1, gtpv0_hdr.flags);
gtpv0_hdr.length = g_ntohs(gtpv0_hdr.length);
gtpv0_hdr.seq_no = g_ntohs(gtpv0_hdr.seq_no);
gtpv0_hdr.flow_label = g_ntohs(gtpv0_hdr.flow_label);
proto_tree_add_uint(gtpv0_tree, hf_gtpv0_message_type, tvb, 1, 1, gtpv0_hdr.message);
proto_tree_add_uint(gtpv0_tree, hf_gtpv0_length, tvb, 2, 2, gtpv0_hdr.length);
proto_tree_add_uint(gtpv0_tree, hf_gtpv0_seq_number, tvb, 4, 2, gtpv0_hdr.seq_no);
/* GTP' has 6 bytes of length */
if (!gtp_prime) {
proto_tree_add_uint(gtpv0_tree, hf_gtpv0_flow_label, tvb, 6, 2, gtpv0_hdr.flow_label);
proto_tree_add_uint(gtpv0_tree, hf_gtpv0_sndcp_number, tvb, 8, 1, gtpv0_hdr.sndcp_no);
proto_tree_add_string(gtpv0_tree, hf_gtpv0_tid, tvb, 12, 8, tid_str);
}
if (gtpv0_hdr.message != GTP_MSG_TPDU) {
proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[--- end of GTPv0 header, beginning of extension headers ---]");
offset = gtp_prime ? GTP_PRIME_HDR_LENGTH : GTPv0_HDR_LENGTH;
length = tvb_length(tvb);
mandatory = 0; /* check order of GTP fields against ETSI */
for (;;) {
if (offset >= length) break;
ext_hdr_val = tvb_get_guint8(tvb, offset);
if (gtpv0_etsi_order) {
checked_field = check_field_presence (gtpv0_hdr.message, ext_hdr_val , (int *)&mandatory);
switch (checked_field) {
case -2: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] message not found");
break;
case -1: proto_tree_add_text(gtpv0_tree, tvb, 0, 0, "[WARNING] field not present");
break;
case 0: break;
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"));
}
}
i = -1;
while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv0_tree);
}
}
}
/* next part dissects sublayers of GTP */
if ((gtpv0_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
guint8 sub_proto;
sub_proto = tvb_get_guint8(tvb,GTPv0_HDR_LENGTH);
if ((sub_proto >= 0x45) && (sub_proto <= 0x4e)) {
/* this is most likely an IPv4 packet */
/* we can exclude 0x40 - 0x44 because the minimum header size is 20 octets */
/* 0x4f is excluded because PPP protocol type "IPv6 header compression"
with protocol field compression is more likely than a plain IPv4 packet with 60 octet header size */
next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH, -1, -1);
call_dissector(ip_handle, next_tvb, pinfo, tree);
} else
if ((sub_proto & 0xf0) == 0x60) {
/* this is most likely an IPv6 packet */
next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH, -1, -1);
call_dissector(ipv6_handle, next_tvb, pinfo, tree);
} else {
/* this seems to be a PPP packet */
guint8 acfield_len = 0;
if (sub_proto == 0xff) {
/* this might be an address field, even it shouldn't be here */
guint8 control_field = tvb_get_guint8(tvb,GTPv0_HDR_LENGTH + 1);
if (control_field == 0x03) {
/* now we are pretty sure that address and control field are mistakenly inserted -> ignore it for PPP dissection */
acfield_len = 2;
}
}
next_tvb = tvb_new_subset(tvb, GTPv0_HDR_LENGTH + acfield_len, -1, -1);
call_dissector(ppp_handle, next_tvb, pinfo, tree);
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP");
}
}
/* GTP v1 dissector */
static void
dissect_gtpv1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
_gtpv1_hdr gtpv1_hdr;
proto_item *ti, *tf;
proto_tree *gtpv1_tree, *flags_tree;
guint16 seq_no;
guint8 ext_hdr_val, i, hdr_offset = 4, next_hdr, npdu_no, sub_proto;
tvbuff_t *next_tvb;
int offset, length, mandatory, checked_field, gtp_prime = 0;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP-C");
if (check_col(pinfo->cinfo, COL_INFO))
col_clear(pinfo->cinfo, COL_INFO);
tvb_memcpy(tvb, (guint8 *)&gtpv1_hdr, 0, 8);
gtp_version = (gtpv1_hdr.flags >> 5) & 0x07;
if (check_col(pinfo->cinfo, COL_INFO))
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtpv1_hdr.message, message_type, "Unknown"));
if (tree) {
ti = proto_tree_add_item(tree, proto_gtpv1, tvb, 0, -1, FALSE);
gtpv1_tree = proto_item_add_subtree(ti, ett_gtp);
tf = proto_tree_add_uint(gtpv1_tree, hf_gtpv1_flags, tvb, 0, 1, gtpv1_hdr.flags);
flags_tree = proto_item_add_subtree(tf, ett_gtp_flags);
proto_tree_add_uint(flags_tree, hf_gtpv1_flags_ver, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_uint(flags_tree, hf_gtpv1_flags_pt, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_uint(flags_tree, hf_gtpv1_flags_spare, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_e, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_s, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_boolean(flags_tree, hf_gtpv1_flags_pn, tvb, 0, 1, gtpv1_hdr.flags);
proto_tree_add_uint(gtpv1_tree, hf_gtpv1_message_type, tvb, 1, 1, gtpv1_hdr.message);
gtpv1_hdr.length = g_ntohs(gtpv1_hdr.length);
proto_tree_add_uint(gtpv1_tree, hf_gtpv1_length, tvb, 2, 2, gtpv1_hdr.length);
gtp_prime = (gtpv1_hdr.flags & 0x01) >> 4;
/* GTP' has 6 bytes of length */
if (!gtp_prime) {
gtpv1_hdr.teid = g_ntohl(gtpv1_hdr.teid);
proto_tree_add_uint(gtpv1_tree, hf_gtpv1_teid, tvb, 4, 4, gtpv1_hdr.teid);
if (gtpv1_hdr.flags & 0x07) {
seq_no = tvb_get_ntohs (tvb, 8);
proto_tree_add_uint (gtpv1_tree, hf_gtpv1_seq_number, tvb, 8, 2, seq_no);
npdu_no = tvb_get_guint8 (tvb, 10);
proto_tree_add_uint (gtpv1_tree, hf_gtpv1_npdu_number, tvb, 10, 1, npdu_no);
next_hdr = tvb_get_guint8(tvb, 11);
proto_tree_add_uint(gtpv1_tree, hf_gtpv1_next, tvb, 11, 1, next_hdr);
hdr_offset = 0;
if (next_hdr) hdr_offset = 1;
else hdr_offset = 0;
}
}
if (gtpv1_hdr.message != GTP_MSG_TPDU) {
proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[--- end of GTP v1 header, beginning of extension headers ---]");
offset = gtp_prime ? GTP_PRIME_HDR_LENGTH: GTPv1_HDR_LENGTH - hdr_offset;
length = tvb_length(tvb);
mandatory = 0; /* check order of GTP fields against ETSI */
for (;;) {
if (offset >= length) break;
ext_hdr_val = tvb_get_guint8(tvb, offset);
if (gtpv1_etsi_order) {
checked_field = check_field_presence (gtpv1_hdr.message, ext_hdr_val , (int *)&mandatory);
switch (checked_field) {
case -2: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] message not found");
break;
case -1: proto_tree_add_text(gtpv1_tree, tvb, 0, 0, "[WARNING] field not present");
break;
case 0: break;
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"));
}
}
i = -1;
while (gtpopt[++i].optcode) if (gtpopt[i].optcode == ext_hdr_val) break;
offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtpv1_tree);
}
}
}
if (gtpv1_hdr.message == GTP_MSG_ERR_IND)
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_add_str(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
if ((gtpv1_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) {
if (gtpv1_hdr.flags & 0x07) {
if (tvb_get_guint8 (tvb, 11))
hdr_offset = 1; /* if next_hdr != 0 */
else
hdr_offset = 0;
}
sub_proto = tvb_get_guint8(tvb,GTPv1_HDR_LENGTH - hdr_offset);
if ((sub_proto >= 0x45) && (sub_proto <= 0x4e)) {
/* this is most likely an IPv4 packet */
/* we can exclude 0x40 - 0x44 because the minimum header size is 20 octets */
/* 0x4f is excluded because PPP protocol type "IPv6 header compression"
with protocol field compression is more likely than a plain IPv4 packet with 60 octet header size */
next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset, -1, -1);
call_dissector(ip_handle, next_tvb, pinfo, tree);
} else
if ((sub_proto & 0xf0) == 0x60)
{
/* this is most likely an IPv6 packet */
next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset, -1, -1);
call_dissector(ipv6_handle, next_tvb, pinfo, tree);
} else {
/* this seems to be a PPP packet */
guint8 acfield_len = 0;
if (sub_proto == 0xff) {
/* this might be an address field, even it shouldn't be here */
guint8 control_field;
control_field = tvb_get_guint8(tvb,GTPv1_HDR_LENGTH - hdr_offset + 1);
if (control_field == 0x03)
{
/* now we are pretty sure that address and control field are mistakenly inserted -> ignore it for PPP dissection */
acfield_len = 2;
}
}
next_tvb = tvb_new_subset(tvb, GTPv1_HDR_LENGTH - hdr_offset + acfield_len, -1, -1);
call_dissector(ppp_handle, next_tvb, pinfo, tree);
}
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP-U");
}
}
static const true_false_string yes_no_tfs = {
"yes" ,
"no"
};
void
proto_register_gtp(void)
{
static hf_register_info hf_gtpv0[] = {
{ &hf_gtpv0_flags, { "Flags", "gtpv0.flags", FT_UINT8, BASE_HEX, NULL, 0, "Ver/PT/Spare/SNN", HFILL }},
{ &hf_gtpv0_flags_ver, { "Version", "gtpv0.flags.version", FT_UINT8, BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
{ &hf_gtpv0_flags_pt, { "Protocol type", "gtpv0.flags.payload", FT_UINT8, BASE_DEC, NULL, GTP_PT_MASK, "Protocol Type (1 = GTP, 0 = GTP' )", HFILL }},
{ &hf_gtpv0_flags_spare, { "Reserved", "gtpv0.flags.reserved", FT_UINT8, BASE_DEC, NULL, GTP_SPARE_MASK, "Reserved (shall be sent as '111' )", HFILL }},
{ &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 }},
{ &hf_gtpv0_message_type, { "Message type", "gtpv0.message", FT_UINT8, BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
{ &hf_gtpv0_length, { "Length", "gtpv0.length", FT_UINT16, BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
{ &hf_gtpv0_seq_number, { "Sequence number", "gtpv0.seq_number", FT_UINT16, BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
{ &hf_gtpv0_flow_label, { "Flow label", "gtpv0.flow_label", FT_UINT16, BASE_HEX, NULL, 0, "Flow label", HFILL }},
{ &hf_gtpv0_sndcp_number, { "SNDCP N-PDU LLC Number", "gtpv0.sndcp_number", FT_UINT8, BASE_HEX, NULL, 0, "SNDCP N-PDU LLC Number", HFILL }},
{ &hf_gtpv0_tid, { "TID", "gtpv0.tid", FT_STRING, BASE_DEC, NULL, 0, "Tunnel Identifier", HFILL }},
{ &hf_gtpv0_cause, { "Cause", "gtpv0.cause", FT_UINT8, BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
{ &hf_gtpv0_imsi, { "IMSI", "gtpv0.imsi", FT_STRING, BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
{ &hf_gtpv0_rai_mcc, { "MCC", "gtpv0.mcc", FT_UINT16, BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
{ &hf_gtpv0_rai_mnc, { "MNC", "gtpv0.mnc", FT_UINT8, BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
{ &hf_gtpv0_rai_rac, { "RAC", "gtpv0.rac", FT_UINT8, BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
{ &hf_gtpv0_rai_lac, { "LAC", "gtpv0.lac", FT_UINT16, BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
{ &hf_gtpv0_tlli, { "TLLI", "gtpv0.tlli", FT_UINT32, BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
{ &hf_gtpv0_ptmsi, { "P-TMSI", "gtpv0.ptmsi", FT_UINT32, BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &hf_gtpv0_reorder, { "Reordering required","gtpv0.reorder", FT_BOOLEAN, BASE_NONE,NULL, 0, "Reordering required", HFILL }},
{ &hf_gtpv0_map_cause, { "MAP cause", "gtpv0.map_cause", FT_UINT8, BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
{ &hf_gtpv0_ptmsi_sig, { "P-TMSI signature", "gtpv0.ptmsi_sig", FT_UINT24, BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
{ &hf_gtpv0_ms_valid, { "MS validated", "gtpv0.ms_valid", FT_BOOLEAN, BASE_NONE,NULL, 0, "MS validated", HFILL }},
{ &hf_gtpv0_recovery, { "Recovery", "gtpv0.recovery", FT_UINT8, BASE_DEC, NULL, 0, "Restart counter", HFILL }},
{ &hf_gtpv0_sel_mode, { "Selection mode", "gtpv0.sel_mode", FT_UINT8, BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
{ &hf_gtpv0_ext_flow_label, { "Flow Label Data I", "gtpv0.ext_flow_label", FT_UINT16, BASE_HEX, NULL, 0, "Flow label data", HFILL }},
{ &hf_gtpv0_flow_sig, { "Flow label Signalling", "gtpv0.flow_sig", FT_UINT16, BASE_HEX, NULL, 0, "Flow label signalling", HFILL }},
{ &hf_gtpv0_nsapi, { "NSAPI ", "gtpv0.nsapi", FT_UINT8, BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
{ &hf_gtpv0_flow_ii, { "Flow Label Data II ","gtpv0.flow_ii", FT_UINT16, BASE_DEC, NULL, 0, "Downlink flow label data", HFILL }},
{ &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 }},
{ &hf_gtpv0_tr_comm, { "Packet transfer command", "gtpv0.tr_comm", FT_UINT8, BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
{ &hf_gtpv0_chrg_id, { "Charging ID ", "gtpv0.chrg_id", FT_UINT32, BASE_HEX, NULL, 0, "Charging ID", HFILL }},
{ &hf_gtpv0_user_ipv4, { "End user address IPv4", "gtpv0.user_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
{ &hf_gtpv0_user_ipv6, { "End user address IPv6", "gtpv0.user_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
{ &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 }},
{ &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 }},
{ &hf_gtpv0_apn, { "APN", "gtpv0.apn", FT_STRING, BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
{ &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 }},
{ &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 }},
{ &hf_gtpv0_gsn_ipv4, { "GSN address IPv4", "gtpv0.gsn_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
{ &hf_gtpv0_gsn_ipv6, { "GSN address IPv6", "gtpv0.gsn_ipv6", FT_IPv6, BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
{ &hf_gtpv0_msisdn, { "MSISDN", "gtpv0.msisdn", FT_STRING, BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
{ &hf_gtpv0_chrg_ipv4, { "CG address IPv4", "gtpv0.chrg_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
{ &hf_gtpv0_chrg_ipv6, { "CG address IPv6", "gtpv0.chrg_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
{ &hf_gtpv0_node_ipv4, { "Node address IPv4", "gtpv0.node_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
{ &hf_gtpv0_node_ipv6, { "Node address IPv6", "gtpv0.node_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
{ &hf_gtpv0_ext_id, { "Extension identifier", "gtpv0.ext_id", FT_UINT16, BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
{ &hf_gtpv0_ext_val, { "Extension value", "gtpv0.ext_val", FT_STRING, BASE_DEC, NULL, 0, "Extension Value", HFILL }},
{ &hf_gtpv0_unknown, { "Unknown data (length)", "gtpv0.unknown", FT_UINT16, BASE_DEC, NULL, 0, "Unknown data", HFILL }},
};
static hf_register_info hf_gtpv1[] = {
{ &hf_gtpv1_flags, { "Flags", "gtpv1.flags", FT_UINT8, BASE_HEX, NULL, 0, "Ver/PT/Spare/E/S/PN", HFILL }},
{ &hf_gtpv1_flags_ver, { "Version", "gtpv1.flags.version", FT_UINT8, BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_message_type, { "Message Type", "gtpv1.message", FT_UINT8, BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }},
{ &hf_gtpv1_length, { "Length", "gtpv1.length", FT_UINT16, BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }},
{ &hf_gtpv1_seq_number, { "Sequence Number", "gtpv1.seq_number", FT_UINT16, BASE_HEX, NULL, 0, "Sequence Number", HFILL }},
{ &hf_gtpv1_teid, { "TEID", "gtpv1.teid", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier", HFILL }},
{ &hf_gtpv1_npdu_number, { "N-PDU Number", "gtpv1.npdu_number", FT_UINT8, BASE_HEX, NULL, 0, "N-PDU Number", HFILL }},
{ &hf_gtpv1_next, { "Next extension header type", "gtpv1.next", FT_UINT8, BASE_HEX, NULL, 0, "Next Extension Header Type", HFILL }},
{ &hf_gtpv1_cause, { "Cause ", "gtpv1.cause", FT_UINT8, BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }},
{ &hf_gtpv1_imsi, { "IMSI", "gtpv1.imsi", FT_STRING, BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }},
{ &hf_gtpv1_rai_mcc, { "MCC", "gtpv1.mcc", FT_UINT16, BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }},
{ &hf_gtpv1_rai_mnc, { "MNC", "gtpv1.mnc", FT_UINT8, BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }},
{ &hf_gtpv1_rai_rac, { "RAC", "gtpv1.rac", FT_UINT8, BASE_DEC, NULL, 0, "Routing Area Code", HFILL }},
{ &hf_gtpv1_rai_lac, { "LAC", "gtpv1.lac", FT_UINT16, BASE_DEC, NULL, 0, "Location Area Code", HFILL }},
{ &hf_gtpv1_tlli, { "TLLI", "gtpv1.tlli", FT_UINT32, BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }},
{ &hf_gtpv1_ptmsi, { "P-TMSI", "gtpv1.ptmsi", FT_UINT32, BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_reorder, { "Reordering required","gtpv1.reorder", FT_BOOLEAN, BASE_NONE,NULL, 0, "Reordering required", HFILL }},
{ &hf_gtpv1_map_cause, { "MAP cause", "gtpv1.map_cause", FT_UINT8, BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }},
{ &hf_gtpv1_ptmsi_sig, { "P-TMSI Signature", "gtpv1.ptmsi_sig", FT_UINT24, BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }},
{ &hf_gtpv1_ms_valid, { "MS validated", "gtpv1.ms_valid", FT_BOOLEAN, BASE_NONE,NULL, 0, "MS validated", HFILL }},
{ &hf_gtpv1_recovery, { "Recovery", "gtpv1.recovery", FT_UINT8, BASE_DEC, NULL, 0, "Restart counter", HFILL }},
{ &hf_gtpv1_sel_mode, { "Selection Mode", "gtpv1.sel_mode", FT_UINT8, BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }},
{ &hf_gtpv1_teid_data, { "TEID Data I", "gtpv1.teid_data", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data I", HFILL }},
{ &hf_gtpv1_teid_cp, { "TEID Control Plane", "gtpv1.teid_cp", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Control Plane", HFILL }},
{ &hf_gtpv1_nsapi, { "NSAPI", "gtpv1.nsapi", FT_UINT8, BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }},
{ &hf_gtpv1_teid_ii, { "TEID Data II", "gtpv1.teid_ii", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data II", HFILL }},
{ &hf_gtpv1_tear_ind, { "Teardown Indicator","gtpv1.tear_ind", FT_BOOLEAN, BASE_NONE,NULL, 0, "Teardown Indicator", HFILL }},
{ &hf_gtpv1_ranap_cause, { "RANAP cause", "gtpv1.ranap_cause", FT_UINT8, BASE_DEC, VALS(ranap_cause_type), 0, "RANAP cause", HFILL }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_rp_sms, { "Radio Priority SMS", "gtpv1.rp_sms", FT_UINT8, BASE_DEC, NULL, 0, "Radio Priority for MO SMS", HFILL }},
{ &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 }},
{ &hf_gtpv1_rp_spare, { "Reserved", "gtpv1.rp_spare", FT_UINT8, BASE_DEC, NULL, GTPv1_EXT_RP_SPARE_MASK, "Spare bit", HFILL }},
{ &hf_gtpv1_rp, { "Radio Priority", "gtpv1.rp", FT_UINT8, BASE_DEC, NULL, GTPv1_EXT_RP_MASK, "Radio Priority for uplink tx", HFILL }},
{ &hf_gtpv1_pkt_flow_id, { "Packet Flow ID", "gtpv1.pkt_flow_id", FT_UINT8, BASE_DEC, NULL, 0, "Packet Flow ID", HFILL }},
{ &hf_gtpv1_chrg_char_s, { "Spare", "gtpv1.chrg_char_s", FT_UINT8, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_S, "Spare", HFILL }},
{ &hf_gtpv1_chrg_char_n, { "Normal charging", "gtpv1.chrg_char_n", FT_UINT8, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_N, "Normal charging", HFILL }},
{ &hf_gtpv1_chrg_char_p, { "Prepaid charging", "gtpv1.chrg_char_p", FT_UINT8, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_P, "Prepaid charging", HFILL }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_chrg_char_r, { "Reserved", "gtpv1.chrg_char_r", FT_UINT8, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_R, "Reserved", HFILL }},
{ &hf_gtpv1_trace_ref, { "Trace reference", "gtpv1.trace_ref", FT_UINT16, BASE_HEX, NULL, 0, "Trace reference", HFILL }},
{ &hf_gtpv1_trace_type, { "Trace type", "gtpv1.trace_type", FT_UINT16, BASE_HEX, NULL, 0, "Trace type", HFILL }},
{ &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 }},
{ &hf_gtpv1_tr_comm, { "Packet transfer command", "gtpv1.tr_comm", FT_UINT8, BASE_DEC, VALS(tr_comm_type), 0, "Packat transfer command", HFILL }},
{ &hf_gtpv1_chrg_id, { "Charging ID", "gtpv1.chrg_id", FT_UINT32, BASE_HEX, NULL, 0, "Charging ID", HFILL }},
{ &hf_gtpv1_user_ipv4, { "End user address IPv4", "gtpv1.user_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "End user address IPv4", HFILL }},
{ &hf_gtpv1_user_ipv6, { "End user address IPv6", "gtpv1.user_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "End user address IPv6", HFILL }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_apn, { "APN", "gtpv1.apn", FT_STRING, BASE_DEC, NULL, 0, "Access Point Name", HFILL }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_gsn_ipv4, { "GSN address IPv4", "gtpv1.gsn_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }},
{ &hf_gtpv1_gsn_ipv6, { "GSN address IPv6", "gtpv1.gsn_ipv6", FT_IPv6, BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }},
{ &hf_gtpv1_msisdn, { "MSISDN", "gtpv1.msisdn", FT_STRING, BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }},
{ &hf_gtpv1_qos_al_ret_priority, { "Allocation/Retention priority ","gtpv1.qos_al_ret_priority", FT_UINT8, BASE_DEC, NULL, 0, "Allocation/Retention Priority", HFILL }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &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 }},
{ &hf_gtpv1_tft_code, { "TFT operation code", "gtpv1.tft_code", FT_UINT8, BASE_DEC, VALS (tft_code_type), GTPv1_TFT_CODE_MASK, "TFT operation code", HFILL }},
{ &hf_gtpv1_tft_spare, { "TFT spare bit", "gtpv1.tft_spare", FT_UINT8, BASE_DEC, NULL, GTPv1_TFT_SPARE_MASK, "TFT spare bit", HFILL }},
{ &hf_gtpv1_tft_number, { "Number of packet filters", "gtpv1.tft_number", FT_UINT8, BASE_DEC, NULL, GTPv1_TFT_NUMBER_MASK, "Number of packet filters", HFILL }},
{ &hf_gtpv1_tft_eval, { "Evaluation precedence", "gtpv1.tft_eval", FT_UINT8, BASE_DEC, NULL, 0, "Evaluation precedence", HFILL }},
{ &hf_gtpv1_rnc_ipv4, { "RNC address IPv4", "gtpv1.rnc_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Radio Network Controller address IPv4", HFILL }},
{ &hf_gtpv1_rnc_ipv6, { "RNC address IPv6", "gtpv1.rnc_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Radio Network Controller address IPv6", HFILL }},
{ &hf_gtpv1_chrg_ipv4, { "CG address IPv4", "gtpv1.chrg_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }},
{ &hf_gtpv1_chrg_ipv6, { "CG address IPv6", "gtpv1.chrg_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }},
{ &hf_gtpv1_node_ipv4, { "Node address IPv4", "gtpv1.node_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }},
{ &hf_gtpv1_node_ipv6, { "Node address IPv6", "gtpv1.node_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }},
{ &hf_gtpv1_ext_id, { "Extensio Identifier","gtpv1.ext_id", FT_UINT16, BASE_DEC, NULL, 0, "Extension Identifier", HFILL }},
{ &hf_gtpv1_ext_val, { "Extension Value", "gtpv1.ext_val", FT_STRING, BASE_DEC, NULL, 0, "Extension Value", HFILL }},
{ &hf_gtpv1_unknown, { "Unknown data (length)", "gtpv1.unknown", FT_UINT16, BASE_DEC, NULL, 0, "Unknown data", HFILL }},
};
static gint *ett_gtp_array[] = {
&ett_gtp,
&ett_gtp_flags,
&ett_gtp_ext,
&ett_gtp_rai,
&ett_gtp_qos,
&ett_gtp_auth_tri,
&ett_gtp_flow_ii,
&ett_gtp_rab_cntxt,
&ett_gtp_rp,
&ett_gtp_pkt_flow_id,
&ett_gtp_chrg_char,
&ett_gtp_user,
&ett_gtp_mm,
&ett_gtp_trip,
&ett_gtp_quint,
&ett_gtp_pdp,
&ett_gtp_apn,
&ett_gtp_proto,
&ett_gtp_gsn_addr,
&ett_gtp_tft,
&ett_gtp_tft_pf,
&ett_gtp_tft_flags,
&ett_gtp_rab_setup,
&ett_gtp_hdr_list,
&ett_gtp_chrg_addr,
&ett_gtp_node_addr,
&ett_gtp_rel_pack,
&ett_gtp_can_pack,
&ett_gtp_data_resp,
&ett_gtp_priv_ext,
};
module_t *gtp_module;
static enum_val_t gtpv0_cdr_options[] = {
{ "GSM 12.15 (not implemented yet)", 0 },
{ "Nokia CDR", 1 },
{ "None", 2 },
{ NULL, -1 }
};
/* proto_gtp defined only for preference tab */
proto_gtp = proto_register_protocol ("GPRS Tunneling Protocol", "GTP", "gtp");
proto_gtpv0 = proto_register_protocol ("GPRS Tunnelling Protocol v0", "GTPv0", "gtpv0");
proto_register_field_array(proto_gtpv0, hf_gtpv0, array_length(hf_gtpv0));
proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
proto_gtpv1 = proto_register_protocol("GPRS Tunnelling Protocol v1", "GTPv1", "gtpv1");
proto_register_field_array(proto_gtpv1, hf_gtpv1, array_length(hf_gtpv1));
proto_register_subtree_array(ett_gtp_array, array_length(ett_gtp_array));
gtp_module = prefs_register_protocol(proto_gtp, proto_reg_handoff_gtp);
prefs_register_uint_preference(gtp_module, "v0_port", "GTPv0 port", "GTPv0 port (default 3386)", 10, &g_gtpv0_port);
prefs_register_uint_preference(gtp_module, "v1c_port", "GTPv1 control plane (GTP-C) port", "GTPv1 control plane port (default 2123)", 10, &g_gtpv1c_port);
prefs_register_uint_preference(gtp_module, "v1u_port", "GTPv1 user plane (GTP-U) port", "GTPv1 user plane port (default 2152)", 10, &g_gtpv1u_port);
prefs_register_bool_preference(gtp_module, "dissect_tpdu", "Dissect T-PDU", "Dissect T-PDU", &gtp_tpdu);
prefs_register_enum_preference(gtp_module, "v0_dissect_cdr_as", "Dissect GTP'v0 CDRs as", "Dissect GTP'v0 CDRs as", &gtpv0_cdr_as, gtpv0_cdr_options, FALSE);
prefs_register_bool_preference(gtp_module, "v0_check_etsi", "Compare GTPv0 order with ETSI", "GTPv0 ETSI order", &gtpv0_etsi_order);
prefs_register_bool_preference(gtp_module, "v1_check_etsi", "Compare GTPv1 order with ETSI", "GTPv1 ETSI order", &gtpv1_etsi_order);
prefs_register_obsolete_preference(gtp_module, "ppp_reorder");
register_dissector("gtpv0", dissect_gtpv0, proto_gtpv0);
register_dissector("gtpv1", dissect_gtpv1, proto_gtpv1);
}
void
proto_reg_handoff_gtp(void)
{
static int Initialized = FALSE;
static dissector_handle_t gtpv0_handle;
static dissector_handle_t gtpv1_handle;
if (!Initialized) {
gtpv0_handle = find_dissector("gtpv0");
gtpv1_handle = find_dissector("gtpv1");
Initialized = TRUE;
} else {
dissector_delete("udp.port", gtpv0_port, gtpv0_handle);
dissector_delete("tcp.port", gtpv0_port, gtpv0_handle);
dissector_delete("udp.port", gtpv1c_port, gtpv1_handle);
dissector_delete("tcp.port", gtpv1c_port, gtpv1_handle);
dissector_delete("udp.port", gtpv1u_port, gtpv1_handle);
dissector_delete("tcp.port", gtpv1u_port, gtpv1_handle);
}
gtpv0_port = g_gtpv0_port;
gtpv1c_port = g_gtpv1c_port;
gtpv1u_port = g_gtpv1u_port;
/* GTP v0 */
dissector_add("udp.port", g_gtpv0_port, gtpv0_handle);
dissector_add("tcp.port", g_gtpv0_port, gtpv0_handle);
/* GTP v1 */
dissector_add("udp.port", g_gtpv1c_port, gtpv1_handle);
dissector_add("tcp.port", g_gtpv1c_port, gtpv1_handle);
dissector_add("udp.port", g_gtpv1u_port, gtpv1_handle);
dissector_add("tcp.port", g_gtpv1u_port, gtpv1_handle);
ip_handle = find_dissector("ip");
ipv6_handle = find_dissector("ipv6");
ppp_handle = find_dissector("ppp");
data_handle = find_dissector("data");
}
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