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openairinterface5g/openair3/NAS/COMMON/EMM/MSG/TrackingAreaUpdateRequest.c
T
Guido Casati bf7761131d Refactor NAS Key Set Identifier enc/dec functions 
* simplified the code while keeping same functionality
* reduced the number of functions (from 4 to 2)
* clang-formatted
2024-11-25 13:15:10 +01:00

527 lines
24 KiB
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include "TLVEncoder.h"
#include "TLVDecoder.h"
#include "TrackingAreaUpdateRequest.h"
int decode_tracking_area_update_request(tracking_area_update_request_msg *tracking_area_update_request, uint8_t *buffer, uint32_t len)
{
uint32_t decoded = 0;
int decoded_result = 0;
// Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message.
CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, TRACKING_AREA_UPDATE_REQUEST_MINIMUM_LENGTH, len);
/* Decoding mandatory fields */
if ((decoded_result = decode_u8_eps_update_type(&tracking_area_update_request->epsupdatetype, 0, *(buffer + decoded) >> 4, len - decoded)) < 0)
return decoded_result;
if ((decoded_result =
decode_nas_key_set_identifier(&tracking_area_update_request->naskeysetidentifier, 0, *(buffer + decoded) & 0x0f))
< 0)
return decoded_result;
decoded++;
if ((decoded_result = decode_eps_mobile_identity(&tracking_area_update_request->oldguti, 0, buffer + decoded, len - decoded)) < 0)
return decoded_result;
else
decoded += decoded_result;
/* Decoding optional fields */
while(len - decoded > 0) {
uint8_t ieiDecoded = *(buffer + decoded);
/* Type | value iei are below 0x80 so just return the first 4 bits */
if (ieiDecoded >= 0x80)
ieiDecoded = ieiDecoded & 0xf0;
switch(ieiDecoded) {
case TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_IEI:
if ((decoded_result = decode_nas_key_set_identifier(&tracking_area_update_request->noncurrentnativenaskeysetidentifier,
TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_IEI,
*(buffer + decoded)))
<= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_IEI:
if ((decoded_result =
decode_ciphering_key_sequence_number(&tracking_area_update_request->gprscipheringkeysequencenumber,
TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_IEI:
if ((decoded_result =
decode_p_tmsi_signature(&tracking_area_update_request->oldptmsisignature,
TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_IEI:
if ((decoded_result =
decode_eps_mobile_identity(&tracking_area_update_request->additionalguti,
TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_IEI, buffer +
decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_NONCEUE_IEI:
if ((decoded_result =
decode_nonce(&tracking_area_update_request->nonceue,
TRACKING_AREA_UPDATE_REQUEST_NONCEUE_IEI, buffer + decoded,
len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_IEI:
if ((decoded_result =
decode_ue_network_capability(&tracking_area_update_request->uenetworkcapability,
TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_IEI:
if ((decoded_result =
decode_tracking_area_identity(&tracking_area_update_request->lastvisitedregisteredtai,
TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_IEI:
if ((decoded_result =
decode_drx_parameter(&tracking_area_update_request->drxparameter,
TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_IEI, buffer +
decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_IEI:
if ((decoded_result =
decode_ue_radio_capability_information_update_needed(&tracking_area_update_request->ueradiocapabilityinformationupdateneeded,
TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_IEI:
if ((decoded_result =
decode_eps_bearer_context_status(&tracking_area_update_request->epsbearercontextstatus,
TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_IEI:
if ((decoded_result =
decode_ms_network_capability(&tracking_area_update_request->msnetworkcapability,
TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_IEI:
if ((decoded_result =
decode_location_area_identification(&tracking_area_update_request->oldlocationareaidentification,
TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_IEI:
if ((decoded_result =
decode_tmsi_status(&tracking_area_update_request->tmsistatus,
TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_IEI, buffer +
decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_IEI:
if ((decoded_result =
decode_mobile_station_classmark_2(&tracking_area_update_request->mobilestationclassmark2,
TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_IEI:
if ((decoded_result =
decode_mobile_station_classmark_3(&tracking_area_update_request->mobilestationclassmark3,
TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_IEI:
if ((decoded_result =
decode_supported_codec_list(&tracking_area_update_request->supportedcodecs,
TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_IEI, buffer +
decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_IEI:
if ((decoded_result =
decode_additional_update_type(&tracking_area_update_request->additionalupdatetype,
TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_PRESENT;
break;
case TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_IEI:
if ((decoded_result =
decode_guti_type(&tracking_area_update_request->oldgutitype,
TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_IEI,
buffer + decoded, len - decoded)) <= 0)
return decoded_result;
decoded += decoded_result;
/* Set corresponding mask to 1 in presencemask */
tracking_area_update_request->presencemask |= TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_PRESENT;
break;
default:
errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI;
return TLV_DECODE_UNEXPECTED_IEI;
}
}
return decoded;
}
int encode_tracking_area_update_request(tracking_area_update_request_msg *tracking_area_update_request, uint8_t *buffer, uint32_t len)
{
int encoded = 0;
int encode_result = 0;
/* Checking IEI and pointer */
CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, TRACKING_AREA_UPDATE_REQUEST_MINIMUM_LENGTH, len);
*(buffer + encoded) = ((encode_u8_eps_update_type(&tracking_area_update_request->epsupdatetype) & 0x0f) << 4)
| (encode_nas_key_set_identifier(&tracking_area_update_request->naskeysetidentifier, 0) & 0x0f);
encoded++;
if ((encode_result =
encode_eps_mobile_identity(&tracking_area_update_request->oldguti, 0,
buffer + encoded, len - encoded)) < 0) //Return in case of error
return encode_result;
else
encoded += encode_result;
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_PRESENT) {
if ((encode_result = encode_nas_key_set_identifier(&tracking_area_update_request->noncurrentnativenaskeysetidentifier,
TRACKING_AREA_UPDATE_REQUEST_NONCURRENT_NATIVE_NAS_KEY_SET_IDENTIFIER_IEI))
< 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_PRESENT) {
if ((encode_result =
encode_ciphering_key_sequence_number(&tracking_area_update_request->gprscipheringkeysequencenumber,
TRACKING_AREA_UPDATE_REQUEST_GPRS_CIPHERING_KEY_SEQUENCE_NUMBER_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_PRESENT) {
if ((encode_result =
encode_p_tmsi_signature(&tracking_area_update_request->oldptmsisignature,
TRACKING_AREA_UPDATE_REQUEST_OLD_PTMSI_SIGNATURE_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_PRESENT) {
if ((encode_result =
encode_eps_mobile_identity(&tracking_area_update_request->additionalguti,
TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_GUTI_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT) {
if ((encode_result =
encode_nonce(&tracking_area_update_request->nonceue,
TRACKING_AREA_UPDATE_REQUEST_NONCEUE_IEI, buffer + encoded, len -
encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_PRESENT) {
if ((encode_result =
encode_ue_network_capability(&tracking_area_update_request->uenetworkcapability,
TRACKING_AREA_UPDATE_REQUEST_UE_NETWORK_CAPABILITY_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_PRESENT) {
if ((encode_result =
encode_tracking_area_identity(&tracking_area_update_request->lastvisitedregisteredtai,
TRACKING_AREA_UPDATE_REQUEST_LAST_VISITED_REGISTERED_TAI_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_PRESENT) {
if ((encode_result =
encode_drx_parameter(&tracking_area_update_request->drxparameter,
TRACKING_AREA_UPDATE_REQUEST_DRX_PARAMETER_IEI, buffer + encoded,
len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_PRESENT) {
if ((encode_result =
encode_ue_radio_capability_information_update_needed(&tracking_area_update_request->ueradiocapabilityinformationupdateneeded,
TRACKING_AREA_UPDATE_REQUEST_UE_RADIO_CAPABILITY_INFORMATION_UPDATE_NEEDED_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_PRESENT) {
if ((encode_result =
encode_eps_bearer_context_status(&tracking_area_update_request->epsbearercontextstatus,
TRACKING_AREA_UPDATE_REQUEST_EPS_BEARER_CONTEXT_STATUS_IEI, buffer
+ encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_PRESENT) {
if ((encode_result =
encode_ms_network_capability(&tracking_area_update_request->msnetworkcapability,
TRACKING_AREA_UPDATE_REQUEST_MS_NETWORK_CAPABILITY_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_PRESENT) {
if ((encode_result =
encode_location_area_identification(&tracking_area_update_request->oldlocationareaidentification,
TRACKING_AREA_UPDATE_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_PRESENT) {
if ((encode_result =
encode_tmsi_status(&tracking_area_update_request->tmsistatus,
TRACKING_AREA_UPDATE_REQUEST_TMSI_STATUS_IEI, buffer + encoded,
len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_PRESENT) {
if ((encode_result =
encode_mobile_station_classmark_2(&tracking_area_update_request->mobilestationclassmark2,
TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_2_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_PRESENT) {
if ((encode_result =
encode_mobile_station_classmark_3(&tracking_area_update_request->mobilestationclassmark3,
TRACKING_AREA_UPDATE_REQUEST_MOBILE_STATION_CLASSMARK_3_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_PRESENT) {
if ((encode_result =
encode_supported_codec_list(&tracking_area_update_request->supportedcodecs,
TRACKING_AREA_UPDATE_REQUEST_SUPPORTED_CODECS_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_PRESENT) {
if ((encode_result =
encode_additional_update_type(&tracking_area_update_request->additionalupdatetype,
TRACKING_AREA_UPDATE_REQUEST_ADDITIONAL_UPDATE_TYPE_IEI, buffer +
encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
if ((tracking_area_update_request->presencemask & TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_PRESENT)
== TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_PRESENT) {
if ((encode_result =
encode_guti_type(&tracking_area_update_request->oldgutitype,
TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_IEI,
buffer + encoded, len - encoded)) < 0)
// Return in case of error
return encode_result;
else
encoded += encode_result;
}
return encoded;
}
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