117 lines
4.1 KiB
C
117 lines
4.1 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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#include "assertions.h"
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#include "intertask_interface.h"
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#include "nrppa_common.h"
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#include "nrppa_gNB_decoder.h"
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static int nrppa_gNB_decode_initiating_message(NRPPA_NRPPA_PDU_t *pdu)
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{
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asn_encode_to_new_buffer_result_t res = {NULL, {0, NULL, NULL}};
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DevAssert(pdu != NULL);
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switch (pdu->choice.initiatingMessage->procedureCode) {
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case NRPPA_ProcedureCode_id_tRPInformationExchange: // TRPInformationRequest
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NRPPA_NRPPA_PDU, pdu);
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LOG_I(NRPPA, "TRP Information Request initiating message\n");
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free(res.buffer);
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break;
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default:
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AssertFatal(false, "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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return 0;
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}
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static int nrppa_gNB_decode_successful_outcome(NRPPA_NRPPA_PDU_t *pdu)
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{
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asn_encode_to_new_buffer_result_t res = {NULL, {0, NULL, NULL}};
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DevAssert(pdu != NULL);
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switch (pdu->choice.successfulOutcome->procedureCode) {
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case NRPPA_ProcedureCode_id_tRPInformationExchange:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NRPPA_NRPPA_PDU, pdu);
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LOG_I(NRPPA, "TRP Information Response successfull outcome message\n");
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free(res.buffer);
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break;
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default:
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AssertFatal(false,
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"Unknown procedure ID (%d) for successfull outcome message\n",
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(int)pdu->choice.initiatingMessage->procedureCode);
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return -1;
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}
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return 0;
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}
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static int nrppa_gNB_decode_unsuccessful_outcome(NRPPA_NRPPA_PDU_t *pdu)
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{
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asn_encode_to_new_buffer_result_t res = {NULL, {0, NULL, NULL}};
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DevAssert(pdu != NULL);
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switch (pdu->choice.unsuccessfulOutcome->procedureCode) {
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case NRPPA_ProcedureCode_id_tRPInformationExchange:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NRPPA_NRPPA_PDU, pdu);
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LOG_I(NRPPA, "TRP Information Failure unsuccessfull outcome message\n");
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free(res.buffer);
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break;
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default:
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AssertFatal(false,
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"Unknown procedure ID (%d) for unsuccessfull outcome message\n",
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(int)pdu->choice.initiatingMessage->procedureCode);
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return -1;
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}
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return 0;
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}
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int nrppa_gNB_decode_pdu(NRPPA_NRPPA_PDU_t *pdu, const uint8_t *const buffer, const uint32_t length)
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{
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asn_dec_rval_t dec_ret;
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DevAssert(pdu != NULL);
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DevAssert(buffer != NULL);
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asn_codec_ctx_t st = {.max_stack_size = 100 * 1000}; // if we enable asn1c debug the stack size become large
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dec_ret = aper_decode(&st, &asn_DEF_NRPPA_NRPPA_PDU, (void **)&pdu, buffer, length, 0, 0);
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if (dec_ret.code != RC_OK) {
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LOG_E(NRPPA, "Failed to decode pdu\n");
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return -1;
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}
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switch (pdu->present) {
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case NRPPA_NRPPA_PDU_PR_initiatingMessage:
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return nrppa_gNB_decode_initiating_message(pdu);
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case NRPPA_NRPPA_PDU_PR_successfulOutcome:
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return nrppa_gNB_decode_successful_outcome(pdu);
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case NRPPA_NRPPA_PDU_PR_unsuccessfulOutcome:
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return nrppa_gNB_decode_unsuccessful_outcome(pdu);
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default:
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LOG_I(NRPPA, "Unknown presence (%d) or not implemented\n", (int)pdu->present);
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break;
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}
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return -1;
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}
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