141 lines
5.5 KiB
C
141 lines
5.5 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file ngap_gNB_encoder.c
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* \brief ngap pdu encode procedures for gNB
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* \author Yoshio INOUE, Masayuki HARADA
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* \email yoshio.inoue@fujitsu.com,masayuki.harada@fujitsu.com (yoshio.inoue%40fujitsu.com%2cmasayuki.harada%40fujitsu.com)
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* \date 2020
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* \version 0.1
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*/
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#include "ngap_gNB_encoder.h"
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#include <stdint.h>
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#include <stdio.h>
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#include "ngap_msg_includes.h"
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#include "T.h"
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#include "asn_application.h"
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#include "asn_codecs.h"
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#include "assertions.h"
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#include "common/utils/T/T.h"
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#include "constr_TYPE.h"
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#include "ngap_common.h"
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#include "utils.h"
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#include "xer_encoder.h"
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static inline int ngap_gNB_encode_initiating(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len)
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{
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DevAssert(pdu != NULL);
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const NGAP_ProcedureCode_t tmp[] = {NGAP_ProcedureCode_id_NGSetup,
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NGAP_ProcedureCode_id_UplinkNASTransport,
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NGAP_ProcedureCode_id_UERadioCapabilityInfoIndication,
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NGAP_ProcedureCode_id_InitialUEMessage,
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NGAP_ProcedureCode_id_NASNonDeliveryIndication,
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NGAP_ProcedureCode_id_UEContextReleaseRequest,
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NGAP_ProcedureCode_id_PathSwitchRequest,
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NGAP_ProcedureCode_id_PDUSessionResourceModifyIndication};
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int i;
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for (i = 0; i < sizeofArray(tmp); i++)
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if (pdu->choice.initiatingMessage->procedureCode == tmp[i])
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break;
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if (i == sizeofArray(tmp)) {
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NGAP_DEBUG("Unknown procedure ID (%d) for initiating message\n", (int)pdu->choice.initiatingMessage->procedureCode);
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return -1;
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}
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asn_encode_to_new_buffer_result_t res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
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AssertFatal(res.result.encoded > 0, "failed to encode NGAP msg\n");
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*buffer = res.buffer;
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*len = res.result.encoded;
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return 0;
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}
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static inline int ngap_gNB_encode_successfull_outcome(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len)
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{
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DevAssert(pdu != NULL);
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const NGAP_ProcedureCode_t tmp[] = {NGAP_ProcedureCode_id_InitialContextSetup,
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NGAP_ProcedureCode_id_UEContextRelease,
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NGAP_ProcedureCode_id_PDUSessionResourceSetup,
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NGAP_ProcedureCode_id_PDUSessionResourceModify,
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NGAP_ProcedureCode_id_PDUSessionResourceRelease};
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int i;
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for (i = 0; i < sizeofArray(tmp); i++)
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if (pdu->choice.successfulOutcome->procedureCode == tmp[i])
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break;
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if (i == sizeofArray(tmp)) {
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NGAP_WARN("Unknown procedure ID (%ld) for successfull outcome message\n", pdu->choice.successfulOutcome->procedureCode);
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return -1;
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}
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asn_encode_to_new_buffer_result_t res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
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AssertFatal(res.result.encoded > 0, "failed to encode NGAP msg\n");
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*buffer = res.buffer;
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*len = res.result.encoded;
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return 0;
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}
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static inline int ngap_gNB_encode_unsuccessfull_outcome(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len)
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{
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DevAssert(pdu != NULL);
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if (pdu->choice.unsuccessfulOutcome->procedureCode != NGAP_ProcedureCode_id_InitialContextSetup) {
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NGAP_DEBUG("Unknown procedure ID (%d) for unsuccessfull outcome message\n", (int)pdu->choice.unsuccessfulOutcome->procedureCode);
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return -1;
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}
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asn_encode_to_new_buffer_result_t res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
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AssertFatal(res.result.encoded > 0, "failed to encode NGAP msg\n");
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*buffer = res.buffer;
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*len = res.result.encoded;
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return 0;
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}
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int ngap_gNB_encode_pdu(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len)
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{
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int ret = -1;
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DevAssert(pdu != NULL);
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DevAssert(buffer != NULL);
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DevAssert(len != NULL);
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if (asn1_xer_print) {
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xer_fprint(stdout, &asn_DEF_NGAP_NGAP_PDU, (void *)pdu);
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}
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switch (pdu->present) {
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case NGAP_NGAP_PDU_PR_initiatingMessage:
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ret = ngap_gNB_encode_initiating(pdu, buffer, len);
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break;
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case NGAP_NGAP_PDU_PR_successfulOutcome:
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ret = ngap_gNB_encode_successfull_outcome(pdu, buffer, len);
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break;
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case NGAP_NGAP_PDU_PR_unsuccessfulOutcome:
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ret = ngap_gNB_encode_unsuccessfull_outcome(pdu, buffer, len);
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break;
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default:
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NGAP_DEBUG("Unknown message outcome (%d) or not implemented", (int)pdu->present);
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return -1;
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}
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_NGAP_NGAP_PDU, pdu);
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return ret;
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}
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