131 lines
4.2 KiB
C
131 lines
4.2 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 f1ap_du_rrc_message_transfer.c
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* \brief f1ap rrc message transfer for DU
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* \author EURECOM/NTUST
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* \date 2018
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* \version 0.1
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* \company Eurecom
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* \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
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* \note
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* \warning
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*/
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#include "f1ap_common.h"
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#include "f1ap_encoder.h"
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#include "f1ap_itti_messaging.h"
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#include "f1ap_du_rrc_message_transfer.h"
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#include "uper_decoder.h"
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#include "NR_DL-CCCH-Message.h"
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#include "NR_UL-CCCH-Message.h"
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#include "NR_DL-DCCH-Message.h"
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#include "NR_UL-DCCH-Message.h"
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// for SRB1_logicalChannelConfig_defaultValue
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#include "rrc_extern.h"
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#include "common/ran_context.h"
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#include "openair2/RRC/NR/rrc_gNB_UE_context.h"
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#include "asn1_msg.h"
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#include "intertask_interface.h"
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#include "LAYER2/NR_MAC_gNB/mac_proto.h"
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#include "openair2/LAYER2/NR_MAC_gNB/mac_rrc_dl_handler.h"
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#include "f1ap_rrc_message_transfer.h"
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/* DL RRC Message Transfer */
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int DU_handle_DL_RRC_MESSAGE_TRANSFER(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
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{
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f1ap_dl_rrc_message_t msg = {0};
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if (!decode_dl_rrc_message_transfer(pdu, &msg)) {
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LOG_E(F1AP, "cannot decode F1 DL RRC message Transfer\n");
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free_dl_rrc_message_transfer(&msg);
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return -1;
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}
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dl_rrc_message_transfer(&msg);
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/* Free DL RRC Message Transfer */
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free_dl_rrc_message_transfer(&msg);
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return 0;
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}
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/* UL RRC Message Transfer */
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int DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER(sctp_assoc_t assoc_id, const f1ap_initial_ul_rrc_message_t *msg)
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{
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/* encode Initial UL RRC Message Transfer */
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F1AP_F1AP_PDU_t *pdu = encode_initial_ul_rrc_message_transfer(msg);
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/* free F1AP message after encoding */
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free_initial_ul_rrc_message_transfer(msg);
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if (pdu == NULL) {
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LOG_E(F1AP, "cannot encode F1 INITIAL UL RRC MESSAGE TRANSFER, can't send message\n");
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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return -1;
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}
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/* encode F1AP PDU */
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uint8_t *buffer = NULL;
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uint32_t len = 0;
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if (f1ap_encode_pdu(pdu, &buffer, &len) < 0) {
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LOG_E(F1AP, "Failed to encode F1 INITIAL UL RRC MESSAGE TRANSFER\n");
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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return -1;
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}
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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/* Send to ITTI */
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f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
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return 0;
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}
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int DU_send_UL_NR_RRC_MESSAGE_TRANSFER(sctp_assoc_t assoc_id, const f1ap_ul_rrc_message_t *msg)
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{
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LOG_D(F1AP,
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"size %d UE RNTI %x in SRB %d\n",
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msg->rrc_container_length,
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msg->gNB_DU_ue_id,
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msg->srb_id);
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/* encode UL RRC Message Transfer */
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F1AP_F1AP_PDU_t *pdu = encode_ul_rrc_message_transfer(msg);
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if (pdu == NULL) {
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LOG_E(F1AP, "Failed to encode F1 UL RRC MESSAGE TRANSFER: cannot send message\n");
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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return -1;
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}
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/* encode F1AP PDU */
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uint8_t *buffer = NULL;
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uint32_t len;
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if (f1ap_encode_pdu(pdu, &buffer, &len) < 0) {
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LOG_E(F1AP, "Failed to encode F1 UL RRC MESSAGE TRANSFER \n");
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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return -1;
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}
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/* Free F1AP PDU */
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ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
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/* Send to ITTI */
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f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
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return 0;
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}
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