410 lines
15 KiB
C
410 lines
15 KiB
C
|
/* packet-gtpv2.c
|
|||
|
|
*
|
|||
|
|
* Routines for GTPv2 dissection
|
|||
|
|
* Copyright 2009, Anders Broman <anders.broman [at] ericcsson.com>
|
|||
|
|
*
|
|||
|
|
* $Id$
|
|||
|
|
*
|
|||
|
|
* Wireshark - Network traffic analyzer
|
|||
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|||
|
|
* 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.
|
|||
|
|
* Ref: ETSI TS 129 274 V8.0.0 (2009-01)
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#ifdef HAVE_CONFIG_H
|
|||
|
|
# include "config.h"
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#include <stdio.h>
|
|||
|
|
#include <stdlib.h>
|
|||
|
|
#include <string.h>
|
|||
|
|
|
|||
|
|
#include <glib.h>
|
|||
|
|
|
|||
|
|
#include <epan/packet.h>
|
|||
|
|
|
|||
|
|
static int proto_gtpv2 = -1;
|
|||
|
|
static int hf_gtpv2_flags = -1;
|
|||
|
|
static int hf_gtpv2_version = -1;
|
|||
|
|
static int hf_gtpv2_t = -1;
|
|||
|
|
static int hf_gtpv2_message_type = -1;
|
|||
|
|
static int hf_gtpv2_msg_length = -1;
|
|||
|
|
static int hf_gtpv2_teid = -1;
|
|||
|
|
static int hf_gtpv2_seq = -1;
|
|||
|
|
static int hf_gtpv2_spare = -1;
|
|||
|
|
static int hf_gtpv2_ie = -1;
|
|||
|
|
static int hf_gtpv2_ie_len = -1;
|
|||
|
|
static int hf_gtpv2_cr = -1;
|
|||
|
|
static int hf_gtpv2_instance = -1;
|
|||
|
|
|
|||
|
|
static gint ett_gtpv2 = -1;
|
|||
|
|
static gint ett_gtpv2_flags = -1;
|
|||
|
|
static gint ett_gtpv2_ie = -1;
|
|||
|
|
|
|||
|
|
|
|||
|
|
static const value_string gtpv2_message_type_vals[] = {
|
|||
|
|
{0, "Reserved"},
|
|||
|
|
{1, "Echo Request"},
|
|||
|
|
{2, "Echo Response"},
|
|||
|
|
{4, "Version Not Supported Indication"},
|
|||
|
|
/* 4-24 Reserved for S101 interface TS 29.276 */
|
|||
|
|
/* 25-31 Reserved for Sv interface TS 29.280 */
|
|||
|
|
{32, "Create Session Request"},
|
|||
|
|
{33, "Create Session Response"},
|
|||
|
|
{34, "Update User Plane Request"},
|
|||
|
|
{35, "Update User Plane Response"},
|
|||
|
|
{36, "Modify Bearer Request"},
|
|||
|
|
{37, "Modify Bearer Response"},
|
|||
|
|
{38, "Delete Session Request"},
|
|||
|
|
{39, "Delete Session Response"},
|
|||
|
|
{40, "Change Notification Request"},
|
|||
|
|
{41, "Change Notification Response"},
|
|||
|
|
/* 42-63 For future use */
|
|||
|
|
/* Messages without explicit response */
|
|||
|
|
{64, "Modify Bearer Command"}, /* (MME/SGSN to PGW <20>S11/S4, S5/S8) */
|
|||
|
|
{65, "Modify Bearer Failure Indication"}, /*(PGW to MME/SGSN <20>S5/S8, S11/S4) */
|
|||
|
|
{66, "Delete Bearer Command"}, /* (MME to PGW <20>S11, S5/S8) */
|
|||
|
|
{67, "Delete Bearer Failure Indication"}, /* (PGW to MME <20>S5/S8, S11) */
|
|||
|
|
{68, "Bearer Resource Command"}, /* (MME/SGSN to PGW <20>S11/S4, S5/S8) */
|
|||
|
|
{69, "Bearer Resource Failure Indication"}, /* (PGW to MME/SGSN <20>S5/S8, S11/S4) */
|
|||
|
|
{70, "Downlink Data Notification Failure Indication"}, /*(SGSN/MME to SGW <20>S4/S11) */
|
|||
|
|
/* 71-94 For future use PDN-GW to SGSN/MME (S5/S8, S4/S11) */
|
|||
|
|
{95, "Create Bearer Request "},
|
|||
|
|
{96, "Create Bearer Response "},
|
|||
|
|
{97, "Update Bearer Request "},
|
|||
|
|
{98, "Update Bearer Response "},
|
|||
|
|
{99, "Delete Bearer Request "},
|
|||
|
|
{100, "Delete Bearer Response "},
|
|||
|
|
/* 101-127 For future use MME to MME, SGSN to MME, MME to SGSN, SGSN to SGSN (S3/10/S16) */
|
|||
|
|
{128, "Identification Request "},
|
|||
|
|
{129, "Identification Response "},
|
|||
|
|
{130, "Context Request "},
|
|||
|
|
{131, "Context Response "},
|
|||
|
|
{132, "Context Acknowledge "},
|
|||
|
|
{133, "Forward Relocation Request "},
|
|||
|
|
{134, "Forward Relocation Response "},
|
|||
|
|
{135, "Forward Relocation Complete Notification "},
|
|||
|
|
{136, "Forward Relocation Complete Acknowledge "},
|
|||
|
|
{137, "Forward SRNS Context Notification "},
|
|||
|
|
{138, "Forward SRNS Context Acknowledge "},
|
|||
|
|
{139, "Relocation Cancel Request "},
|
|||
|
|
{140, "Relocation Cancel Response "},
|
|||
|
|
/* 141-148 For future use SGSN to MME, MME to SGSN (S3) */
|
|||
|
|
{149, "Detach Notification "},
|
|||
|
|
{150, "Detach Acknowledge "},
|
|||
|
|
{151, "CS Paging Indication "},
|
|||
|
|
/* 152-159 For future use */
|
|||
|
|
{160, "Create Forwarding Tunnel Request "},
|
|||
|
|
{161, "Create Forwarding Tunnel Response "},
|
|||
|
|
{162, "Suspend Notification "},
|
|||
|
|
{163, "Suspend Acknowledge "},
|
|||
|
|
{164, "Resume Notification "},
|
|||
|
|
{165, "Resume Acknowledge "},
|
|||
|
|
{166, "Create Indirect Data Forwarding Tunnel Request "},
|
|||
|
|
{167, "Create Indirect Data Forwarding Tunnel Response "},
|
|||
|
|
/* 168-175 For future use SGW to SGSN/MME (S4/S11) */
|
|||
|
|
{176, "Downlink Data Notification "},
|
|||
|
|
{177, "Downlink Data Notification Acknowledgement "},
|
|||
|
|
{178, "Update Bearer Complete "},
|
|||
|
|
/* 179-191 For future use */
|
|||
|
|
/* Other */
|
|||
|
|
/* 192-244 For future use */
|
|||
|
|
/* 245-255 Reserved for GTP-U TS 29.281 [13] */
|
|||
|
|
{0, NULL}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/* Table 8.1-1: Information Element types for GTPv2 */
|
|||
|
|
static const value_string gtpv2_element_type_vals[] = {
|
|||
|
|
{0, "Reserved"},
|
|||
|
|
{1, "International Mobile Subscriber Identity (IMSI)"}, /* Extendable / 8.3 */
|
|||
|
|
{2, "Cause (without embedded offending IE)"}, /* Extendable / 8.4 */
|
|||
|
|
{3, "Recovery (Restart Counter)"}, /* Extendable / 8.5 */
|
|||
|
|
/* 4-50 Reserved for S101 interface Extendable / See 3GPP TS 29.276 [14] */
|
|||
|
|
/* 51-70 Reserved for Sv interface Extendable / See 3GPP TS 29.280 [15] */
|
|||
|
|
{71, "Access Point Name (APN)"}, /* Extendable / 8.6 */
|
|||
|
|
{72, "Aggregate Maximum Bit Rate (AMBR)"}, /* Extendable / 8.7 */
|
|||
|
|
{73, "EPS Bearer ID (EBI)"}, /* Extendable / 8.8 */
|
|||
|
|
{74, "IP Address"}, /* Extendable / 8.9 */
|
|||
|
|
{75, "Mobile Equipment Identity (MEI)"}, /* Extendable / 8.10 */
|
|||
|
|
{76, "MSISDN"}, /* Extendable / 8.11 */
|
|||
|
|
{77, "Indication"}, /* Extendable / 8.12 */
|
|||
|
|
{78, "Protocol Configuration Options (PCO)"}, /* Extendable / 8.13 */
|
|||
|
|
{79, "PDN Address Allocation (PAA)"}, /* Extendable / 8.14 */
|
|||
|
|
{80, "Bearer Level Quality of Service (Bearer QoS)"}, /* Extendable / 8.15 */
|
|||
|
|
{81, "Flow Quality of Service (Flow QoS)"}, /* Extendable / 8.16 */
|
|||
|
|
{82, "RAT Type"}, /* Extendable / 8.17 */
|
|||
|
|
{83, "Serving Network"}, /* Extendable / 8.18 */
|
|||
|
|
{84, "TEID-C"}, /* Extendable / 8.19 */
|
|||
|
|
/* TEID-U Extendable / 8.19a */
|
|||
|
|
/* TEID-U with EPS Bearer ID Extendable / 8.19b */
|
|||
|
|
{85, "EPS Bearer Level Traffic Flow Template (Bearer TFT)"},/* Extendable / 8.20 */
|
|||
|
|
{86, "Traffic Aggregation Description (TAD)"}, /* Extendable / 8.21 */
|
|||
|
|
{87, "User Location Info (ULI)"}, /* Extendable / 8.22 */
|
|||
|
|
{88, "Fully Qualified Tunnel Endpoint Identifier (F-TEID)"},/* Extendable / 8.23 */
|
|||
|
|
{89, "TMSI"}, /* Extendable / 8.24 */
|
|||
|
|
{90, "Global CN-Id"}, /* Extendable / 8.25 */
|
|||
|
|
{91, "Legacy Quality of Service (Legacy QoS)"}, /* Extendable / 8.26 */
|
|||
|
|
{92, "S103 PDN Data Forwarding Info (S103PDF)"}, /* Extendable / 8.27 */
|
|||
|
|
{93, "S1-U Data Forwarding Info (S1UDF)"}, /* Extendable / 8.28 */
|
|||
|
|
{94, "Delay Value"}, /* Extendable / 8.29 */
|
|||
|
|
{95, "Bearer ID List"}, /* Extendable / 8.30 */
|
|||
|
|
{96, "Bearer Context"}, /* Extendable / 8.31 */
|
|||
|
|
{97, "S101-IP-Address"}, /* Extendable / 8.32 */
|
|||
|
|
{98, "S102-IP-Address"}, /* Extendable / 8.33 */
|
|||
|
|
{99, "Charging ID"}, /* Extendable / 8.34 */
|
|||
|
|
{100, "Charging Characteristics"}, /* Extendable / 8.35 */
|
|||
|
|
{101, "Trace Information"}, /* Extendable / 8.36 */
|
|||
|
|
{102, "Bearer Flags"}, /* Extendable / 8.37 */
|
|||
|
|
{103, "Paging Cause"}, /* Extendable / 8.38 */
|
|||
|
|
{104, "PDN Type"}, /* Extendable / 8.39 */
|
|||
|
|
{105, "Procedure Transaction ID"}, /* Extendable / 8.40 */
|
|||
|
|
{106, "DRX Parameter"}, /* Extendable / 8.41 */
|
|||
|
|
{107, "UE Network Capability"}, /* Extendable / 8.42 */
|
|||
|
|
{108, "PDU Numbers"}, /* Extendable / 8.46 */
|
|||
|
|
{109, "MM Context (GSM Key and Triplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{110, "MM Context (UMTS Key, Used Cipher and Quintuplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{111, "MM Context (GSM Key, Used Cipher and Quintuplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{112, "MM Context (UMTS Key and Quintuplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{113, "MM Context (EPS Security Context, Quadruplets and Quintuplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{114, "MM Context (UMTS Key, Quadruplets and Quintuplets)"}, /* Extendable / 8.43 */
|
|||
|
|
{115, "PDN Connection"}, /* Extendable / 8.44 */
|
|||
|
|
{116, "GRE Key"}, /* Extendable / 8.45 */
|
|||
|
|
{117, "Bearer Control Mode"}, /* Extendable / 8.68 */
|
|||
|
|
{118, "EPS Bearer Contexts Prioritization (Contexts Prioritization)"}, /* Extendable / 8.47 */
|
|||
|
|
{119, "LMA IP Address"}, /* Extendable / 8.48 */
|
|||
|
|
{120, "P-TMSI"}, /* Extendable / 8.49 */
|
|||
|
|
{121, "P-TMSI Signature"}, /* Extendable / 8.50 */
|
|||
|
|
{122, "Hop Counter"}, /* Extendable / 8.51 */
|
|||
|
|
{123, "Authentication Quintuplet"}, /* Extendable / 8.52 */
|
|||
|
|
{124, "Authentication Quadruplet"}, /* Extendable / 8.53 */
|
|||
|
|
{125, "Complete Request Message"}, /* Extendable / 8.54 */
|
|||
|
|
{126, "GUTI"}, /* Extendable / 8.55 */
|
|||
|
|
{127, "F-Container"}, /* Extendable / 8.56 */
|
|||
|
|
{128, "F-Cause"}, /* Extendable / 8.57 */
|
|||
|
|
{129, "Selected PLMN ID"}, /* Extendable / 8.58 */
|
|||
|
|
{130, "Target Identification"}, /* Extendable / 8.59 */
|
|||
|
|
{131, "Cell Identification"}, /* Extendable / 8.67 */
|
|||
|
|
{132, "NSAPI"}, /* Extendable / 8.60 */
|
|||
|
|
{133, "Packet Flow ID"}, /* Extendable / 8.61 */
|
|||
|
|
{134, "RAB Context"}, /* Extendable / 8.62 */
|
|||
|
|
{135, "Source RNC PDCP Context Info"}, /* Extendable / 8.63 */
|
|||
|
|
{136, "UDP Source Port Number"}, /* Extendable / 8.64 */
|
|||
|
|
{137, "APN Restriction"}, /* Extendable / 8.65 */
|
|||
|
|
{138, "Selection Mode"}, /* Extendable / 8.66 */
|
|||
|
|
{139, "Change Reporting Action"}, /* Extendable / 8.69 */
|
|||
|
|
{140, "Cause including an embedded offending IE"}, /* Extendable / 8.4 */
|
|||
|
|
{141, "PDN Connection Set Identifier (CSID)"}, /* Extendable / 8.70 */
|
|||
|
|
/* 142-254 Spare."}, /* For future use. FFS */
|
|||
|
|
{255, "Private"}, /* Extension Extendable / 8.71 */
|
|||
|
|
{0, NULL}
|
|||
|
|
};
|
|||
|
|
static void
|
|||
|
|
dissect_gtpv2_ie_common(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, gint offset)
|
|||
|
|
{
|
|||
|
|
proto_tree *ie_tree;
|
|||
|
|
proto_item *ti;
|
|||
|
|
guint8 type;
|
|||
|
|
guint16 length;
|
|||
|
|
/*
|
|||
|
|
* Octets 8 7 6 5 4 3 2 1
|
|||
|
|
* 1 Type
|
|||
|
|
* 2-3 Length = n
|
|||
|
|
* 4 CR Spare Instance
|
|||
|
|
* 5-(n+4) IE specific data
|
|||
|
|
*/
|
|||
|
|
while(offset <= (gint)tvb_reported_length(tvb)){
|
|||
|
|
/* Get the type and length */
|
|||
|
|
type = tvb_get_guint8(tvb,offset);
|
|||
|
|
length = tvb_get_ntohs(tvb, offset+1);
|
|||
|
|
ti = proto_tree_add_text(tree, tvb, offset, 4 + length, "%s : ", val_to_str(type, gtpv2_element_type_vals, "Unknown"));
|
|||
|
|
ie_tree = proto_item_add_subtree(ti, ett_gtpv2_ie);
|
|||
|
|
/* Octet 1 */
|
|||
|
|
proto_tree_add_item(ie_tree, hf_gtpv2_ie, tvb, offset, 1, FALSE);
|
|||
|
|
offset++;
|
|||
|
|
|
|||
|
|
/*Octet 2 - 3 */
|
|||
|
|
proto_tree_add_item(ie_tree, hf_gtpv2_ie_len, tvb, offset, 2, FALSE);
|
|||
|
|
offset+=2;
|
|||
|
|
/* CR Spare Instance Octet 4*/
|
|||
|
|
proto_tree_add_item(ie_tree, hf_gtpv2_cr, tvb, offset, 1, FALSE);
|
|||
|
|
proto_tree_add_item(ie_tree, hf_gtpv2_instance, tvb, offset, 1, FALSE);
|
|||
|
|
offset++;
|
|||
|
|
/* TODO: call IE dissector here */
|
|||
|
|
offset = offset + length;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
static void
|
|||
|
|
dissect_gtpv2(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
|
|||
|
|
{
|
|||
|
|
proto_tree *gtpv2_tree, *flags_tree;
|
|||
|
|
proto_item *ti, *tf;
|
|||
|
|
guint8 message_type, t_flag;
|
|||
|
|
int offset = 0;
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* Currently we get called from the GTP dissector no need to check the version */
|
|||
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|||
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTPv2");
|
|||
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|||
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|||
|
|
|
|||
|
|
/* message type is in octet 2 */
|
|||
|
|
message_type = tvb_get_guint8(tvb,1);
|
|||
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|||
|
|
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(message_type, gtpv2_message_type_vals, "Unknown"));
|
|||
|
|
|
|||
|
|
if (tree) {
|
|||
|
|
ti = proto_tree_add_item(tree, proto_gtpv2, tvb, offset, -1, FALSE);
|
|||
|
|
gtpv2_tree = proto_item_add_subtree(ti, ett_gtpv2);
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* Control Plane GTP uses a variable length header. Control Plane GTP header
|
|||
|
|
* length shall be a multiple of 4 octets.
|
|||
|
|
* Figure 5.1-1 illustrates the format of the GTPv2-C Header.
|
|||
|
|
* Bits 8 7 6 5 4 3 2 1
|
|||
|
|
* Octets 1 Version Spare T Spare Spare Spare
|
|||
|
|
* 2 Message Type
|
|||
|
|
* 3 Message Length (1st Octet)
|
|||
|
|
* 4 Message Length (2nd Octet)
|
|||
|
|
* m<EFBFBD>k(m+3) If T flag is set to 1, then TEID shall be placed into octets 5-8.
|
|||
|
|
* Otherwise, TEID field is not present at all.
|
|||
|
|
* n-(n+1) Sequence Number
|
|||
|
|
* (n+2)-(n+3) Spare
|
|||
|
|
* Figure 5.1-1: General format of GTPv2 Header for Control Plane
|
|||
|
|
*/
|
|||
|
|
tf = proto_tree_add_item(gtpv2_tree, hf_gtpv2_flags, tvb, offset, 1, FALSE);
|
|||
|
|
flags_tree = proto_item_add_subtree(tf, ett_gtpv2_flags);
|
|||
|
|
|
|||
|
|
/* Octet 1 */
|
|||
|
|
t_flag = (tvb_get_guint8(tvb,offset) & 0x08)>>3;
|
|||
|
|
proto_tree_add_item(flags_tree, hf_gtpv2_version, tvb, offset, 1, FALSE);
|
|||
|
|
proto_tree_add_item(flags_tree, hf_gtpv2_t, tvb, offset, 1, FALSE);
|
|||
|
|
offset++;
|
|||
|
|
|
|||
|
|
/* Octet 2 */
|
|||
|
|
proto_tree_add_item(gtpv2_tree, hf_gtpv2_message_type, tvb, offset, 1, FALSE);
|
|||
|
|
offset++;
|
|||
|
|
/* Octet 3 - 4 */
|
|||
|
|
proto_tree_add_item(gtpv2_tree, hf_gtpv2_msg_length, tvb, offset, 2, FALSE);
|
|||
|
|
offset+=2;
|
|||
|
|
|
|||
|
|
if(t_flag){
|
|||
|
|
/* Tunnel Endpoint Identifier 4 octets */
|
|||
|
|
proto_tree_add_item(gtpv2_tree, hf_gtpv2_teid, tvb, offset, 4, FALSE);
|
|||
|
|
offset+=4;
|
|||
|
|
}
|
|||
|
|
/* Sequence Number 2 octets */
|
|||
|
|
proto_tree_add_item(gtpv2_tree, hf_gtpv2_seq, tvb, offset, 2, FALSE);
|
|||
|
|
offset+=2;
|
|||
|
|
|
|||
|
|
/* Spare 2 octets */
|
|||
|
|
proto_tree_add_item(gtpv2_tree, hf_gtpv2_spare, tvb, offset, 2, FALSE);
|
|||
|
|
offset+=2;
|
|||
|
|
|
|||
|
|
dissect_gtpv2_ie_common(tvb, pinfo, tree, offset);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
void proto_register_gtpv2(void)
|
|||
|
|
{
|
|||
|
|
static hf_register_info hf_gtpv2[] = {
|
|||
|
|
{&hf_gtpv2_flags,
|
|||
|
|
{"Flags", "gtpv2.flags",
|
|||
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|||
|
|
"Flags", HFILL}
|
|||
|
|
},
|
|||
|
|
{&hf_gtpv2_version,
|
|||
|
|
{"Version", "gtpv2.version",
|
|||
|
|
FT_UINT8, BASE_DEC, NULL, 0xe0,
|
|||
|
|
"Version", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_t,
|
|||
|
|
{"T", "gtpv2.t",
|
|||
|
|
FT_UINT8, BASE_DEC, NULL, 0x08,
|
|||
|
|
"If TEID field is present or not", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_message_type,
|
|||
|
|
{"Message Type", "gtpv2.message_type",
|
|||
|
|
FT_UINT8, BASE_DEC, VALS(gtpv2_message_type_vals), 0x0,
|
|||
|
|
"Message Type", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_msg_length,
|
|||
|
|
{"Message Length", "gtpv2.msg_lengt",
|
|||
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|||
|
|
"Message Length", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_teid,
|
|||
|
|
{"Tunnel Endpoint Identifier", "gtpv2.msg_lengt",
|
|||
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|||
|
|
"TEID", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_seq,
|
|||
|
|
{"Sequence Number", "gtpv2.seq",
|
|||
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|||
|
|
"SEQ", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_spare,
|
|||
|
|
{"Spare", "gtpv2.seq",
|
|||
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|||
|
|
"Spare", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_ie,
|
|||
|
|
{"IE Type", "gtpv2.ie_type",
|
|||
|
|
FT_UINT8, BASE_DEC, VALS(gtpv2_element_type_vals), 0x0,
|
|||
|
|
"IE Type", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_ie_len,
|
|||
|
|
{"IE Length", "gtpv2.ie_len",
|
|||
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|||
|
|
"length of the information element excluding the first four octets", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_cr,
|
|||
|
|
{"CR flag", "gtpv2.cr",
|
|||
|
|
FT_UINT8, BASE_DEC, NULL, 0xe0,
|
|||
|
|
"CR flag", HFILL}
|
|||
|
|
},
|
|||
|
|
{ &hf_gtpv2_instance,
|
|||
|
|
{"Instance", "gtpv2.instance",
|
|||
|
|
FT_UINT8, BASE_DEC, NULL, 0x0f,
|
|||
|
|
"Instance", HFILL}
|
|||
|
|
},
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
static gint *ett_gtpv2_array[] = {
|
|||
|
|
&ett_gtpv2,
|
|||
|
|
&ett_gtpv2_flags,
|
|||
|
|
&ett_gtpv2_ie,
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
proto_gtpv2 = proto_register_protocol("GPRS Tunneling Protocol V2", "GTPv2", "gtpv2");
|
|||
|
|
proto_register_field_array(proto_gtpv2, hf_gtpv2, array_length(hf_gtpv2));
|
|||
|
|
proto_register_subtree_array(ett_gtpv2_array, array_length(ett_gtpv2_array));
|
|||
|
|
|
|||
|
|
register_dissector("gtpv2", dissect_gtpv2, proto_gtpv2);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* The registration hand-off routine */
|
|||
|
|
void
|
|||
|
|
proto_reg_handoff_gtpv2(void)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|