/* packet-gsm_bssmap_le.c

 * Routines for GSM Lb Interface BSSMAP dissection

 *

 * Copyright 2008, Johnny Mitrevski <mitrevj@hotmail.com>

 *

 * 3GPP TS 49.031 version v7.4.0 (2009-09)

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/expert.h>

#include <epan/tap.h>

#include <epan/tfs.h>

#include <wsutil/array.h>

#include "packet-bssap.h"

#include "packet-gsm_a_common.h"

void proto_register_gsm_bssmap_le(void);

void proto_reg_handoff_gsm_bssmap_le(void);

/* PROTOTYPES/FORWARDS */

/* Message Type definitions */

#define BSSMAP_LE_PERFORM_LOCATION_REQUEST              43

#define BSSMAP_LE_PERFORM_LOCATION_RESPONSE             45

#define BSSMAP_LE_PERFORM_LOCATION_ABORT                46

#define BSSMAP_LE_PERFORM_LOCATION_INFORMATION          47

#define BSSMAP_LE_CONNECTION_ORIENTED_INFORMATION       42

#define BSSMAP_LE_CONNECTIONLESS_INFORMATION            58

#define BSSMAP_LE_RESET                                 48

#define BSSMAP_LE_RESET_ACKNOWLEDGE                     49

static const value_string gsm_bssmap_le_msg_strings[] = {

  { 0, "Reserved" },

  { 1, "Reserved" },

  { 2, "Reserved" },

  { 3, "Reserved" },

  { 4, "Reserved" },

  { BSSMAP_LE_PERFORM_LOCATION_REQUEST,      "Perform Location Request" },

  { BSSMAP_LE_PERFORM_LOCATION_RESPONSE,       "Perform Location Response" },

  { BSSMAP_LE_PERFORM_LOCATION_ABORT,      "Perform Location Abort" },

  { BSSMAP_LE_PERFORM_LOCATION_INFORMATION,    "Perform Location Information" },

  { BSSMAP_LE_CONNECTION_ORIENTED_INFORMATION, "Connection Oriented Information" },

  { BSSMAP_LE_CONNECTIONLESS_INFORMATION,      "Connectionless Information" },

  { BSSMAP_LE_RESET,           "Reset" },

  { BSSMAP_LE_RESET_ACKNOWLEDGE,         "Reset Acknowledge" },

  { 0, NULL }

};

/* Information Element definitions */

#define BSSMAP_LE_LCS_QOS                                    62

#define BSSMAP_LE_LCS_PRIORITY                               67

#define BSSMAP_LE_LOCATION_TYPE                              68

#define BSSMAP_LE_GANSS_LOCATION_TYPE                        130

#define BSSMAP_LE_GEOGRAPHIC_LOCATION                        69

#define BSSMAP_LE_POSITIONING_DATA                           70

#define BSSMAP_LE_GANSS_POSITIONING_DATA                     131

#define BSSMAP_LE_VELOCITY_DATA                              85

#define BSSMAP_LE_LCS_CAUSE                                  71

#define BSSMAP_LE_LCS_CLIENT_TYPE                            72

#define BSSMAP_LE_APDU                                       73

#define BSSMAP_LE_NETWORK_ELEMENT_IDENTITY                   74

#define BSSMAP_LE_REQUESTED_GPS_ASSISTANCE_DATA              75

#define BSSMAP_LE_REQUESTED_GANSS_ASSISTANCE_DATA            65

#define BSSMAP_LE_DECIPHERING_KEYS                           76

#define BSSMAP_LE_RETURN_ERROR_REQUEST                       77

#define BSSMAP_LE_RETURN_ERROR_CAUSE                         78

#define BSSMAP_LE_SEGMENTATION                               79

#define BSSMAP_LE_CLASSMARK_INFORMATION_TYPE_3               19

#define BSSMAP_LE_CAUSE                                      4

#define BSSMAP_LE_CELL_IDENTIFIER                            5

#define BSSMAP_LE_CHOSEN_CHANNEL                             33

#define BSSMAP_LE_IMSI                                       0

#define BSSMAP_LE_RESERVED_NOTE1                             1

#define BSSMAP_LE_RESERVED_NOTE2                             2

#define BSSMAP_LE_RESERVED_NOTE3                             3

#define BSSMAP_LE_LCS_CAPABILITY                             80

#define BSSMAP_LE_PACKET_MEASUREMENT_REPORT                  81

#define BSSMAP_LE_CELL_IDENTITY_LIST                         82

#define BSSMAP_LE_IMEI                                       128

static const value_string gsm_bssmap_le_elem_strings[] = {

  { DE_BMAPLE_LCSQOS,   "LCS QoS" },

  { DE_BMAPLE_LCS_PRIO,   "LCS Priority" },

  { DE_BMAPLE_LOC_TYPE,   "Location Type" },

  { DE_BMAPLE_GANSS_LOC_TYPE, "GANSS Location Type" },

  { DE_BMAPLE_GEO_LOC,    "Geographic Location" },

  { DE_BMAPLE_POS_DATA,   "Positioning Data" },

  { DE_BMAPLE_GANSS_POS_DATA, "GANSS Positioning Data" },

  { DE_BMAPLE_VELOC_DATA,   "Velocity Data" },

  { DE_BMAPLE_LCS_CAUSE,    "LCS Cause" },

  { DE_BMAPLE_LCS_CLIENT_TYPE,  "LCS Client Type" },

  { DE_BMAPLE_APDU,   "APDU" },

  { DE_BMAPLE_NETWORK_ELEM_ID,  "Network Element Identity" },

  { DE_BMAPLE_REQ_GPS_ASSIST_D, "Requested GPS Assistance Data" },

  { DE_BMAPLE_REQ_GNSS_ASSIST_D,  "Requested GANSS Assistance Data" },

  { DE_BMAPLE_DECIPH_KEYS,  "Deciphering Keys" },

  { DE_BMAPLE_RETURN_ERROR_REQ, "Return Error Request" },

  { DE_BMAPLE_RETURN_ERROR_CAUSE, "Return Error Cause" },

  { DE_BMAPLE_SEGMENTATION, "Segmentation" },

  { DE_BMAPLE_CLASSMARK_TYPE_3, "Classmark Information Type 3" },

  { DE_BMAPLE_CAUSE,    "Cause" },

  { DE_BMAPLE_CELL_IDENTIFIER,  "Cell Identifier" },

  { DE_BMAPLE_CHOSEN_CHANNEL, "Chosen Channel" },

  { DE_BMAPLE_IMSI,   "IMSI" },

  { DE_BMAPLE_RES1,   "Reserved" },

  { DE_BMAPLE_RES2,   "Reserved" },

  { DE_BMAPLE_RES3,   "Reserved" },

  { DE_BMAPLE_LCS_CAPABILITY, "LCS Capability" },

  { DE_BMAPLE_PACKET_MEAS_REP,  "Packet Measurement Report" },

  { DE_BMAPLE_MEAS_CELL_ID, "Cell Identity List" },

  { DE_BMAPLE_IMEI,   "IMEI" },

  { 0, NULL }

};

value_string_ext gsm_bssmap_le_elem_strings_ext = VALUE_STRING_EXT_INIT(gsm_bssmap_le_elem_strings);

static const value_string gsm_apdu_protocol_id_strings[] = {

  { 0,  "reserved" },

  { 1,  "BSSLAP" },

  { 2,  "LLP" },

  { 3,  "SMLCPP" },

  { 0, NULL },

};

/* Velocity Requested definitions */

static const value_string bssmap_le_velocity_requested_vals[] = {

  { 0, "do not report velocity" },

  { 1, "report velocity if available" },

  { 0, NULL}

};

/* Vertical Coordinate definitions */

static const value_string bssmap_le_vertical_coordinate_indicator_vals[] = {

  { 0, "vertical coordinate not requested" },

  { 1, "vertical coordinate is requested" },

  { 0, NULL}

};

/* Horizontal Accuracy definitions */

static const value_string bssmap_le_horizontal_accuracy_indicator_vals[] = {

  { 0, "horizontal accuracy is not specified" },

  { 1, "horizontal accuracy is specified" },

  { 0, NULL}

};

/* Vertical Accuracy definitions */

static const value_string bssmap_le_vertical_accuracy_indicator_vals[] = {

  { 0, "vertical accuracy is not specified" },

  { 1, "vertical accuracy is specified" },

  { 0, NULL}

};

/* Response Time definitions */

static const value_string bssmap_le_response_time_definitions_vals[] = {

  { 0, "Response Time is not specified" },

  { 1, "Low Delay" },

  { 2, "Delay Tolerant" },

  { 3, "reserved" },

  { 0, NULL}

};

static const value_string bssmap_le_loc_inf_vals[] = {

  { 0, "Current Geographic Location" },

  { 1, "Location Assistance Information for the target MS" },

  { 2, "Deciphering keys for broadcast assistance data for the target MS" },

  { 0, NULL }

};

static const value_string bssmap_le_pos_method_vals[] = {

  { 0, "Reserved" },

  { 1, "Mobile Assisted E-OTD" },

  { 2, "Mobile Based E-OTD" },

  { 3, "Assisted GPS" },

  { 4, "Assisted GANSS" },

  { 5, "Assisted GPS and Assisted GANSS" },

  { 0, NULL }

};

static const value_string bssmap_le_pos_data_pos_method_vals[] = {

    { 0, "Timing Advance" },

    { 1, "Reserved" },

    { 2, "Reserved" },

    { 3, "Mobile Assisted E - OTD" },

    { 4, "Mobile Based E - OTD" },

    { 5, "Mobile Assisted GPS" },

    { 6, "Mobile Based GPS" },

    { 7, "Conventional GPS" },

    { 8, "U - TDOA" },

    { 9, "Reserved for UTRAN use only" },

    { 0xa, "Reserved for UTRAN use only" },

    { 0xb, "Reserved for UTRAN use only" },

    { 0xc, "Cell ID" },

    { 0, NULL }

};

static const value_string bssmap_le_pos_data_usage_vals[] = {

    { 0, "Attempted unsuccessfully due to failure or interruption" },

    { 1, "Attempted successfully : results not used to generate location" },

    { 2, "Attempted successfully : results used to verify but not generate location" },

    { 3, "Attempted successfully : results used to generate location" },

    { 4, "Attempted successfully : method or methods used by the MS cannot be determined" },

    { 0, NULL }

};

/* Initialize the protocol and registered fields */

static int proto_bssmap_le;

int hf_gsm_bssmap_le_elem_id;

/* The following hf_* variables are used to hold the Wireshark IDs of

* our header fields; they are filled out when we call

* proto_register_field_array() in proto_register_bssmap_le()

*/

static int hf_gsm_bssmap_le_msg_type;

static int hf_gsm_bssmap_le_apdu_protocol_id;

static int hf_gsm_bssmap_le_spare;

static int hf_gsm_bssmap_le_ciphering_key_flag;

static int hf_gsm_bssmap_le_current_deciphering_key_value;

static int hf_gsm_bssmap_le_next_deciphering_key_value;

static int hf_gsm_bssmap_le_acq_ass;

static int hf_gsm_bssmap_le_ref_time;

static int hf_gsm_bssmap_le_ref_loc;

static int hf_gsm_bssmap_le_dgps_corr;

static int hf_gsm_bssmap_le_nav_mod;

static int hf_gsm_bssmap_le_iono_mod;

static int hf_gsm_bssmap_le_utc_mod;

static int hf_gsm_bssmap_le_almanac;

static int hf_gsm_bssmap_le_ephemeris_ext_chk;

static int hf_gsm_bssmap_le_ephemeris_ext;

static int hf_gsm_bssmap_le_real_time_int;

static int hf_gsm_bssmap_le_lcs_cause_value;

static int hf_gsm_bssmap_le_diagnostic_value;

static int hf_gsm_bssmap_le_client_category;

static int hf_gsm_bssmap_le_client_subtype;

static int hf_gsm_bssmap_le_velocity_requested;

static int hf_gsm_bssmap_le_vertical_coordinate_indicator;

static int hf_gsm_bssmap_le_horizontal_accuracy_indicator;

static int hf_gsm_bssmap_le_horizontal_accuracy;

static int hf_gsm_bssmap_le_vertical_accuracy_indicator;

static int hf_gsm_bssmap_le_vertical_accuracy;

static int hf_gsm_bssmap_le_response_time_category;

static int hf_gsm_bssmap_le_apdu;

static int hf_gsm_bssmap_le_message_elements;

static int hf_gsm_bssmap_le_location_inf;

static int hf_gsm_bssmap_le_pos_method;

static int hf_gsm_bssmap_le_pos_data_disc;

static int hf_gsm_bssmap_le_pos_data_pos_method;

static int hf_gsm_bssmap_le_pos_data_usage;

/* Initialize the subtree pointers */

static int ett_bssmap_le_msg;

static expert_field ei_gsm_a_bssmap_le_not_decoded_yet;

static expert_field ei_gsm_a_bssmap_le_extraneous_data;

static expert_field ei_gsm_a_bssmap_le_missing_mandatory_element;

static dissector_handle_t gsm_bsslap_handle;

static dissector_handle_t bssmap_le_handle;

static proto_tree *g_tree;

#define NUM_GSM_BSSMAP_LE_ELEM array_length(gsm_bssmap_le_elem_strings)

int ett_gsm_bssmap_le_elem[NUM_GSM_BSSMAP_LE_ELEM];

/*

 * 10.3 APDU

 */

static uint16_t

de_bmaple_apdu(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset;

  uint8_t   apdu_protocol_id;

  tvbuff_t *APDU_tvb;

  curr_offset = offset;

  proto_tree_add_item(tree, hf_gsm_bssmap_le_apdu, tvb, curr_offset, len, ENC_NA);

  /*

   * dissect the embedded APDU message

   * if someone writes a TS 09.31 dissector

   *

   * The APDU octets 4 to n are coded in the same way as the

   * equivalent octet in the APDU element of 3GPP TS 49.031 BSSAP-LE.

   */

  proto_tree_add_item_ret_uint8(tree, hf_gsm_bssmap_le_apdu_protocol_id, tvb, curr_offset, 1, ENC_BIG_ENDIAN, &apdu_protocol_id);

  switch(apdu_protocol_id){

  case 1:

    /* BSSLAP

     * the embedded message is as defined in 3GPP TS 08.71(3GPP TS 48.071 version 7.2.0 Release 7)

     */

    APDU_tvb = tvb_new_subset_length(tvb, curr_offset+1, len-1);

    if(gsm_bsslap_handle)

      call_dissector(gsm_bsslap_handle, APDU_tvb, pinfo, g_tree);

    break;

  case 2:

    /* LLP

     * The embedded message contains a Facility Information Element as defined in 3GPP TS 04.71

     * excluding the Facility IEI and length of Facility IEI octets defined in 3GPP TS 04.71.(3GPP TS 44.071).

     */

    break;

  case 3:

    /* SMLCPP

     * The embedded message is as defined in 3GPP TS 08.31(TS 48.031).

     */

    break;

  default:

    break;

  }

  curr_offset += len;

  EXTRANEOUS_DATA_CHECK(len, curr_offset - offset, pinfo, &ei_gsm_a_bssmap_le_extraneous_data);

  return curr_offset - offset;

}

/*

 * 10.4 Cause

 * coded as the value part of the Cause IE defined in 3GPP TS 48.008

 */

/*

 * 10.5 Cell Identifier

 * coded as the value part of the Cell Identifier IE defined in 3GPP TS 48.008

 */

/*

 * 10.6 Chosen Channel

 * coded as the value part of the Chosen Channel IE defined in 3GPP TS 48.008

 */

/*

 * 10.7 Classmark Information Type 3

 * coded as the value part of the Classmark Information Type 3 IE defined in 3GPP TS 48.008

 */

/*

 * 10.8 Deciphering Keys

 */

static uint16_t

de_bmaple_decihp_keys(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  int bit_offset;

  /* Spare bits */

  bit_offset = (offset<<3);

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bit_offset, 7, ENC_BIG_ENDIAN);

  bit_offset += 7;

  /* Extract the Ciphering Key Flag and add to protocol tree */

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_ciphering_key_flag, tvb, bit_offset, 1, ENC_BIG_ENDIAN);

  bit_offset++;

  /*offset++;*/

  /* Extract the Current Deciphering Key Value and add to protocol tree */

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_current_deciphering_key_value, tvb, bit_offset, 56, ENC_NA);

  bit_offset += 56;

  /*offset += 7;*/

  /* Extract the Next Deciphering Key Value and add to protocol tree */

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_next_deciphering_key_value, tvb, bit_offset, 56, ENC_NA);

  /*offset += 7;*/

  return len;

}

/*

 * 10.9 Geographic Location

 * contains an octet sequence identical to that for Geographical Information

 * defined in 3GPP TS 23.032..

 */

/*

 * 10.10 Requested GPS Assistance Data

 */

static uint16_t

de_bmaple_req_gps_ass_data(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset;

  curr_offset = offset;

  /* Octet 3 H G F E D C B A */

  /* bit H Acquisition Assistance */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_acq_ass, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit G Reference Time */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_ref_time, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit F Reference Location */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_ref_loc, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit E DGPS Corrections */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_dgps_corr, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit D Navigation Model */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_nav_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit C Ionospheric Model */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_iono_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit B UTC Model */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_utc_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit A Almanac */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_almanac, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  curr_offset++;

  /* Octet 4 P O N M L K J I

   * bits L through P are Spare bits

   */

  /* bit K Ephemeris Extension Check */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_ephemeris_ext_chk, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit J Ephemeris Extension */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_ephemeris_ext, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  /* bit I Real-Time Integrity */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_real_time_int, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  curr_offset++;

  /* Octet 5 to Octet 8+2n Satellite related data */

  proto_tree_add_expert_format(tree, pinfo, &ei_gsm_a_bssmap_le_not_decoded_yet, tvb, curr_offset, len-2, "Satellite related data Not decoded yet");

  return len;

}

/*

 * 10.11 IMSI

 * coded as the value part of the Mobile Identity IE defined in 3GPP TS 24.008 (NOTE 1)

 * NOTE 1: The Type of identity field in the Mobile Identity IE shall

 * be ignored by the receiver

 */

/*

 * 10.12 (void)

 */

/*

 * 10.13 LCS Cause

 */

static const value_string bssmap_le_lcs_cause_values[] = {

  { 0, "Unspecified" },

  { 1, "System Failure" },

  { 2, "Protocol Error" },

  { 3, "Data missing in position request" },

  { 4, "Unexpected data value in position request" },

  { 5, "Position method failure" },

  { 6, "Target MS Unreachable" },

  { 7, "Location request aborted" },

  { 8, "Facility not supported" },

  { 9, "Inter-BSC Handover Ongoing" },

  { 10, "Intra-BSC Handover Complete" },

  { 11, "Congestion" },

  { 12, "Inter NSE cell change" },

  { 13, "Routing Area Update" },

  { 14, "PTMSI reallocation" },

  { 15, "Suspension of GPRS services" },

  { 0, NULL}

};

static const value_string bssmap_le_position_method_failure_diagnostic_vals[] = {

  { 0, "Congestion" },

  { 1, "insufficientResources" },

  { 2, "insufficientMeasurementData" },

  { 3, "inconsistentMeasurementData" },

  { 4, "locationProcedureNotCompleted" },

  { 5, "locationProcedureNotSupportedByTargetMS" },

  { 6, "qoSNotAttainable" },

  { 7, "positionMethodNotAvailableInNetwork" },

  { 8, "positionMethodNotAvailableInLocationArea" },

  { 0, NULL}

};

static uint16_t

de_bmaple_cause(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset;

  curr_offset = offset;

  /* cause value  */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_lcs_cause_value, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  curr_offset++;

  if (len == 2)

  {

    /* Diagnostic value (note) */

    proto_tree_add_item(tree, hf_gsm_bssmap_le_diagnostic_value, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

    curr_offset++;

  }

  return curr_offset - offset;

}

/*

 * 10.14 LCS Client Type

 */

/* Client Category definitions */

static const value_string bssmap_le_client_category[] = {

  { 0, "Value Added Client" },

  { 2, "PLMN Operator" },

  { 3, "Emergency Services"},

  { 4, "Lawful Intercept Services"},

  { 0, NULL}

};

/* Client Subtype definitions */

static const value_string bssmap_le_client_subtype[] = {

  { 0, "unspecified" },

  { 1, "broadcast service" },

  { 2, "O&M" },

  { 3, "anonymous statistics" },

  { 4, "Target MS service support" },

  { 0, NULL}

};

static uint16_t

de_bmaple_client(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset;

  uint8_t bitCount;

  bitCount = offset<<3;

  curr_offset = offset;

  /* Extract the client category and add to protocol tree */

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_client_category, tvb, bitCount, 4, ENC_BIG_ENDIAN);

  bitCount = bitCount + 4;

  /* Extract the client subtype and add to protocol tree */

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_client_subtype, tvb, bitCount, 4, ENC_BIG_ENDIAN);

  /*bitCount = bitCount + 4;*/

  curr_offset++;

  return curr_offset - offset;

}

/*

 * 10.15 LCS Priority

 * coded as the LCS-Priority octet in 3GPP TS 29.002

 */

/*

 * 10.16 LCS QoS

 */

static uint16_t

de_bmaple_lcs_qos(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint64_t verticalCoordIndicator, velocityRequested, horizontalAccuracyIndicator, verticalAccuracyIndicator;

  uint16_t bitCount;

  bitCount = offset << 3;

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 6, ENC_BIG_ENDIAN);

  bitCount = bitCount + 6;

  /* Extract Velocity requested element */

  proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_velocity_requested, tvb, bitCount, 1, &velocityRequested, ENC_BIG_ENDIAN);

  bitCount++;

  /* Extract vertical coordinator element */

  proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_vertical_coordinate_indicator, tvb, bitCount, 1, &verticalCoordIndicator, ENC_BIG_ENDIAN);

  bitCount++;

  /* Extract horizontal accuracy element */

  proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_horizontal_accuracy_indicator, tvb, bitCount, 1, &horizontalAccuracyIndicator, ENC_BIG_ENDIAN);

  bitCount++;

  if(horizontalAccuracyIndicator == 1)

  {

    proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_horizontal_accuracy, tvb, bitCount, 7, ENC_BIG_ENDIAN);

    bitCount = bitCount + 7;

  }

  else

  {

    proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 7, ENC_BIG_ENDIAN);

    bitCount = bitCount + 7;

  }

  /* Extract vertical accuracy element */

  proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_vertical_accuracy_indicator, tvb, bitCount, 1, &verticalAccuracyIndicator, ENC_BIG_ENDIAN);

  bitCount++;

  if(verticalAccuracyIndicator == 1)

  {

    proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_vertical_accuracy, tvb, bitCount, 7, ENC_BIG_ENDIAN);

    bitCount = bitCount + 7;

  }

  else

  {

    proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 7, ENC_BIG_ENDIAN);

    bitCount = bitCount + 7;

  }

  proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_response_time_category, tvb, bitCount, 2, ENC_BIG_ENDIAN);

  /*bitCount = bitCount + 2;*/

  return len;

}

/*

 * 10.17 (void)

 */

/*

 * 10.18 Location Type

 */

static uint16_t

de_bmaple_location_type(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset;

  curr_offset = offset;

  /* Location information (octet 3)  */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_location_inf, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  curr_offset++;

  if (len == 1) {

    return len;

  }

  /* Positioning Method (octet 4) */

  proto_tree_add_item(tree, hf_gsm_bssmap_le_pos_method, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

  curr_offset++;

  return curr_offset - offset;

}

/*

 * 10.19 Network Element Identity

 */

/*

 * 10.20 Positioning Data

 */

static uint16_t

de_bmaple_pos_dta(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  uint32_t  curr_offset, value;

  curr_offset = offset;

  /* Octet 3  spare Positioning Data Discriminator*/

  proto_tree_add_item_ret_uint(tree, hf_gsm_bssmap_le_pos_data_disc, tvb, curr_offset, 1, ENC_BIG_ENDIAN, &value);

  curr_offset++;

  if (value != 0) {

    return len;

  }

  /* 0000 indicate usage of each positioning method that was attempted either successfully or unsuccessfully;

   * 1 octet of data is provided for each positioning method included

   */

  while (curr_offset < (offset +len)) {

    /* Octet x  positioning method  usage*/

    proto_tree_add_item(tree, hf_gsm_bssmap_le_pos_data_pos_method, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

    proto_tree_add_item(tree, hf_gsm_bssmap_le_pos_data_usage, tvb, curr_offset, 1, ENC_BIG_ENDIAN);

    curr_offset++;

  }

  return len;

}

/*

 * 10.21 Return Error Request

 */

/*

 * 10.22 Return Error Cause

 */

/*

 * 10.23 (void)

 */

/*

 * 10.24 Segmentation

 */

/*

 * 10.25 (void)

 */

/*

 * 10.26 LCS Capability

 * coded as the value part of the LCS Capability

 * information element in 3GPP TS 48.018, not including

 * 3GPP TS 48.018 IEI and length indicator

 */

/* Dissector for the LCS Capability element */

static uint16_t

be_lcs_capability(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  /* Extract the LCS Capability element and add to protocol tree */

  proto_tree_add_expert(tree, pinfo, &ei_gsm_a_bssmap_le_not_decoded_yet, tvb, offset, len);

  return len;

}

/*

 * 10.27 Packet Measurement Report

 * coded as the Packet Measurement Report

 * message or the Packet Enhanced Measurement Report message

 * starting with the 6-bit MESSAGE_TYPE (see clause 11 in

 * 3GPP TS 44.060) and ending with the Non-distribution contents

 * (i.e. the RLC/MAC padding bits are not included). The end of the

 * message is padded with 0-bits to the nearest octet boundary.

 */

/* Dissector for the Packet Measurement Report element */

static uint16_t

be_packet_meas_rep(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  /* Extract the Packet Measurement Report element and add to protocol tree */

  proto_tree_add_expert(tree, pinfo, &ei_gsm_a_bssmap_le_not_decoded_yet, tvb, offset, len);

  return len;

}

/*

 * 10.28 Cell Identity List

 * coded as the value part of the Cell Identity List IE

 * defined in 3GPP TS 48.071.

 */

/* Dissector for the Measured Cell Identity List element */

static uint16_t

be_measured_cell_identity(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_)

{

  /* Extract the Measured Cell Identity List element and add to protocol tree */

  proto_tree_add_expert(tree, pinfo, &ei_gsm_a_bssmap_le_not_decoded_yet, tvb, offset, len);

  return len;

}

/*

 * 10.29 IMEI

 * IMEI coded as the value part of the Mobile Identity IE defined in

 * 3GPP TS 24.008 (NOTE 1)

 * NOTE 1: The Type of identity field in the Mobile Identity IE shall

 * be ignored by the receiver.

 */

/*

 * 10.30 Velocity Data

 * contains an octet sequence identical to that for Description of

 * Velocity defined in 3GPP TS 23.032.

 */

/*

 * 10.31 Requested GANSS Assistance Data

 */

/*

 * 10.32 GANSS Positioning Data

 */

/*

 * 10.33 GANSS Location Type

 */

#define NUM_GSM_BSSMAP_LE_MSG array_length(gsm_bssmap_le_msg_strings)

static int ett_gsm_bssmap_le_msg[NUM_GSM_BSSMAP_LE_MSG];

/*

This enum is defined in packet-gsm_a_common.h to

make it possible to use element dissection from this dissector

in other dissectors.

It is shown here as a comment for easier reference.

Note this enum must be of the same size as the element decoding list below

typedef enum

{

  DE_BMAPLE_LCSQOS,     / 10.16 LCS QoS /

  DE_BMAPLE_LCS_PRIO,     / LCS Priority /

  DE_BMAPLE_LOC_TYPE,     / 10.18 Location Type /

  DE_BMAPLE_GANSS_LOC_TYPE, / GANSS Location Type /

  DE_BMAPLE_GEO_LOC,      / 10.9 Geographic Location /

  DE_BMAPLE_POS_DATA,     / 10.20 Positioning Data /

  DE_BMAPLE_GANSS_POS_DATA, / GANSS Positioning Data /

  DE_BMAPLE_VELOC_DATA,   / Velocity Data /

  DE_BMAPLE_LCS_CAUSE,    / 10.13 LCS Cause /

  DE_BMAPLE_LCS_CLIENT_TYPE,  / LCS Client Type /

  DE_BMAPLE_APDU,       / 10.3 APDU /

  DE_BMAPLE_NETWORK_ELEM_ID,  / Network Element Identity /

  DE_BMAPLE_REQ_GPS_ASSIST_D, / 10.10 Requested GPS Assistance Data /

  DE_BMAPLE_REQ_GNSS_ASSIST_D,/ Requested GANSS Assistance Data /

  DE_BMAPLE_DECIPH_KEYS,    / 10.8 Deciphering Keys /

  DE_BMAPLE_RETURN_ERROR_REQ, / Return Error Request /

  DE_BMAPLE_RETURN_ERROR_CAUSE, / Return Error Cause /

  DE_BMAPLE_SEGMENTATION,   / Segmentation /

  DE_BMAPLE_CLASSMARK_TYPE_3, / 10.7 Classmark Information Type 3 /

  DE_BMAPLE_CAUSE,      / 10.4 Cause /

  DE_BMAPLE_CELL_IDENTIFIER,  / 10.5 Cell Identifier /

  DE_BMAPLE_CHOSEN_CHANNEL, / 10.6 Chosen Channel /

  DE_BMAPLE_IMSI,       / 10.11 IMSI /

  DE_BMAPLE_RES1,       / Reserved /

  DE_BMAPLE_RES2,       / Reserved /

  DE_BMAPLE_RES3,       / Reserved /

  DE_BMAPLE_LCS_CAPABILITY, / LCS Capability /

  DE_BMAPLE_PACKET_MEAS_REP,  / Packet Measurement Report /

  DE_BMAPLE_MEAS_CELL_ID,   / Measured Cell Identity /

  DE_BMAPLE_IMEI,       / IMEI /

  BMAPLE_NONE         / NONE /

}

bssmap_le_elem_idx_t;

*/

uint16_t (* const bssmap_le_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string, int string_len) = {

  /* NOTE: The null types below are defined elsewhere. i.e in packet-gsm_a_bssmap.c */

  de_bmaple_lcs_qos,        /* 10.16 LCS QoS */

  NULL,             /* LCS Priority */

  de_bmaple_location_type,    /* 10.18 Location Type */

  be_ganss_loc_type,        /* GANSS Location Type */

  NULL,             /* 10.9 Geographic Location */

  de_bmaple_pos_dta,        /* 10.20 Positioning Data */

  be_ganss_pos_dta,       /* GANSS Positioning Data */

  NULL,             /* Velocity Data */

  de_bmaple_cause,        /* 10.13 LCS Cause */

  de_bmaple_client,       /* LCS Client Type */

  de_bmaple_apdu,         /* APDU */

  NULL,             /* Network Element Identity */

  de_bmaple_req_gps_ass_data,   /* 10.10 Requested GPS Assistance Data */

  be_ganss_ass_dta,       /* Requested GANSS Assistance Data */

  de_bmaple_decihp_keys,      /* 10.8 Deciphering Keys */

  NULL,             /* Return Error Request */

  NULL,             /* Return Error Cause */

  NULL,             /* Segmentation */

  NULL,             /* 10.7 Classmark Information Type 3 */

  NULL,             /* Cause */

  NULL,             /* Cell Identifier */

  NULL,             /* 10.6 Chosen Channel */

  de_mid,             /* 10.11 IMSI */

  NULL,             /* Reserved */

  NULL,             /* Reserved */

  NULL,             /* Reserved */

  be_lcs_capability,        /* LCS Capability */

  be_packet_meas_rep,       /* Packet Measurement Report */

  be_measured_cell_identity,    /* Measured Cell Identity List */

  de_mid,             /* IMEI (use same dissector as IMSI) */

  NULL, /* NONE */

};

/*

 * 9.1 PERFORM LOCATION REQUEST

 */

static void

bssmap_le_perf_loc_request(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len)

{

  uint32_t  curr_offset;

  uint32_t  consumed;

  unsigned  curr_len;

  curr_offset = offset;

  curr_len = len;

  /* Location Type 9.1.1 M 3-n */

  ELEM_MAND_TLV(BSSMAP_LE_LOCATION_TYPE, GSM_A_PDU_TYPE_BSSMAP, BE_LOC_TYPE, NULL, ei_gsm_a_bssmap_le_missing_mandatory_element)

  /* Cell Identifier 9.1.2 O 5-10 */

  ELEM_MAND_TLV(BSSMAP_LE_CELL_IDENTIFIER, GSM_A_PDU_TYPE_BSSMAP, BE_CELL_ID, NULL, ei_gsm_a_bssmap_le_missing_mandatory_element);

  /* Classmark Information Type 3 9.1.3 O 3-14 */

  ELEM_OPT_TLV(BSSMAP_LE_CLASSMARK_INFORMATION_TYPE_3, GSM_A_PDU_TYPE_BSSMAP, BE_CM_INFO_3, NULL);

  /* LCS Client Type 9.1.4 C (note 3) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_LCS_CLIENT_TYPE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CLIENT_TYPE, NULL);

  /* Chosen Channel 9.1.5 O 2 */

  ELEM_OPT_TLV(BSSMAP_LE_CHOSEN_CHANNEL, GSM_A_PDU_TYPE_BSSMAP, BE_CHOSEN_CHAN, NULL);

  /* LCS Priority 9.1.6 O 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_LCS_PRIORITY, GSM_A_PDU_TYPE_BSSMAP, BE_LCS_PRIO, NULL);

  /* LCS QoS 9.1.6a C (note 1) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_LCS_QOS, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCSQOS, NULL);

  /* GPS Assistance Data 9.1.7 C (note 2) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_REQUESTED_GPS_ASSISTANCE_DATA, GSM_A_PDU_TYPE_BSSMAP, BE_GPS_ASSIST_DATA, NULL);

  /* APDU 9.1.8 O 3-n */

  ELEM_OPT_TELV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL);

  /* LCS Capability 9.1.9 O */

  ELEM_OPT_TLV(BSSMAP_LE_LCS_CAPABILITY, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CAPABILITY, NULL);

  /* Packet Measurement Report 9.1.10 O*/

  ELEM_OPT_TLV(BSSMAP_LE_PACKET_MEASUREMENT_REPORT, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_PACKET_MEAS_REP, NULL);

  /* Measured Cell Identity List 9.1.11 O*/

  ELEM_OPT_TLV(BSSMAP_LE_CELL_IDENTITY_LIST, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_MEAS_CELL_ID, NULL);

  /* IMSI 9.1.12  O (note 4)  5-10 */

  ELEM_OPT_TLV(BSSMAP_LE_IMSI, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_IMSI, NULL);

  /* IMEI 9.1.13  O (note 4)  10 (use same decode as IMSI) */

  ELEM_OPT_TLV(BSSMAP_LE_IMEI, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_IMEI, NULL);

  /* GANSS Location Type  9.1.14  C 3 */

  ELEM_OPT_TLV(BSSMAP_LE_GANSS_LOCATION_TYPE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_GANSS_LOC_TYPE, NULL);

  /* GANSS Assistance Data  9.1.15  C (note 5)  3-n */

  ELEM_OPT_TLV(BSSMAP_LE_REQUESTED_GANSS_ASSISTANCE_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_REQ_GNSS_ASSIST_D, NULL);

  EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_bssmap_le_extraneous_data);

}

/*

 * 9.2 PERFORM LOCATION RESPONSE

 */

static void

bssmap_le_perf_loc_resp(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len)

{

  uint32_t  curr_offset;

  uint32_t  consumed;

  unsigned  curr_len;

  curr_offset = offset;

  curr_len = len;

  /* Location Estimate 9.2.1 C (note 1) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_GEOGRAPHIC_LOCATION, BSSAP_PDU_TYPE_BSSMAP, BE_LOC_EST, NULL);

  /* Positioning Data 9.2.2 O 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_POSITIONING_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_POS_DATA, NULL);

  /* Deciphering Keys 9.2.3 C (note 2) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_DECIPHERING_KEYS, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_DECIPH_KEYS, NULL);

  /* LCS Cause 9.2.4 C (note 3) 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_LCS_CAUSE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CAUSE, NULL);

  /* Velocity Estimate  9.2.5 O 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_VELOCITY_DATA, BSSAP_PDU_TYPE_BSSMAP, BE_VEL_EST, NULL);

  /* GANSS Positioning Data 9.2.6 O 3-n */

  ELEM_OPT_TLV(BSSMAP_LE_GANSS_POSITIONING_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_GANSS_POS_DATA, NULL);

  EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_bssmap_le_extraneous_data);

}

/*

 * 9.8 CONNECTION ORIENTED INFORMATION

 */

static void

bssmap_le_connection_oriented(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len)

{

  uint32_t  curr_offset;

  uint32_t  consumed;

  unsigned  curr_len;

  curr_offset = offset;

  curr_len = len;

  /* APDU 9.8.1 M 3-n */

  ELEM_MAND_TELV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL, ei_gsm_a_bssmap_le_missing_mandatory_element);

  /* Segmentation 9.8.2 */

  ELEM_OPT_TLV(BSSMAP_LE_SEGMENTATION, BSSAP_PDU_TYPE_BSSMAP, BE_SEG, NULL);

  EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_bssmap_le_extraneous_data);

}

/*

 * 9.9  CONNECTIONLESS INFORMATION

 *

Network Element Identity (source) 3.2.2.69  Both  M 3-n

Network Element Identity (target) 3.2.2.69  Both  M 3-n

APDU  3.2.2.68  Both  M 3-n

Segmentation  3.2,2,74  Both  C (note 1)  5

Return Error Request  3.2.2.72  Both  C (note 2)  3-n

Return Error Cause  3.2.2.73  Both  C (note 3)  3-n

*/

/*

 * 9.11 RESET ACKNOWLEDGE

 * no data

 */

/*

 * 9.12 PERFORM LOCATION INFORMATION

 */

static void

bssmap_le_perf_loc_info(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len)

{

  uint32_t  curr_offset;

  uint32_t  consumed;

  unsigned  curr_len;

  curr_offset = offset;

  curr_len = len;

  /* Cell Identifier 9.12.1 M */

  ELEM_MAND_TLV(BSSMAP_LE_CELL_IDENTIFIER, GSM_A_PDU_TYPE_BSSMAP, BE_CELL_ID, NULL, ei_gsm_a_bssmap_le_missing_mandatory_element);

  /* APDU 9.1.8 O 3-n */

  ELEM_OPT_TELV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL);

  EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_bssmap_le_extraneous_data);

}

static void (* const bssmap_le_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) = {

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  bssmap_le_perf_loc_request, /* Perform Location Request */

  bssmap_le_perf_loc_resp,  /* Perform Location Response */

  bssmap_perf_loc_abort,    /* Abort */

  bssmap_le_perf_loc_info,  /* Perform Location Information */

  bssmap_le_connection_oriented,  /* Connection Oriented Information */

  NULL,           /* Connectionless Information */

  bssmap_reset,       /* Reset */

  NULL,   /* Reset Acknowledge */

  NULL, /* NONE */

};

static int

dissect_bssmap_le(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)

{

  static gsm_a_tap_rec_t  tap_rec[4];

  static gsm_a_tap_rec_t *tap_p;

  static unsigned   tap_current=0;

  uint8_t oct;

  uint32_t  offset, saved_offset;

  uint32_t  len;

  int idx;

  proto_item  *bssmap_le_item = NULL;

  proto_tree  *bssmap_le_tree = NULL;

  const char  *str;

  sccp_msg_info_t *sccp_msg_p = (sccp_msg_info_t *)data;

  if (!(sccp_msg_p && sccp_msg_p->data.co.assoc)) {

    sccp_msg_p = NULL;

  }

  col_append_str(pinfo->cinfo, COL_INFO, "(BSSMAP LE) ");

  /*

   * set tap record pointer

   */

  tap_current++;

  if (tap_current >= 4)

  {

    tap_current = 0;

  }

  tap_p = &tap_rec[tap_current];

  offset = 0;

  saved_offset = offset;

  g_tree = tree;

  len = tvb_reported_length(tvb);

  /*

   * add BSSMAP message name

   */

  oct = tvb_get_uint8(tvb, offset++);

  str = try_val_to_str_idx((uint32_t) oct, gsm_bssmap_le_msg_strings, &idx);

  if (sccp_msg_p && !sccp_msg_p->data.co.label) {

    sccp_msg_p->data.co.label = val_to_str(wmem_file_scope(), (uint32_t) oct, gsm_bssmap_le_msg_strings, "BSSMAP LE(0x%02x)");

  }

  /*

   * create the protocol tree

   */

  if (str == NULL)

  {

    bssmap_le_item =

    proto_tree_add_protocol_format(tree, proto_bssmap_le, tvb, 0, len,

      "Lb - I/F BSSMAP LE - Unknown BSSMAP Message Type (0x%02x)",

      oct);

    bssmap_le_tree = proto_item_add_subtree(bssmap_le_item, ett_bssmap_le_msg);

  }

  else

  {

    bssmap_le_item =

    proto_tree_add_protocol_format(tree, proto_bssmap_le, tvb, 0, -1,

      "Lb - I/F BSSMAP LE - %s",