436 lines
17 KiB
C
436 lines
17 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_cu_rrc_message_transfer.c
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* \brief f1ap rrc message transfer for CU
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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_decoder.h"
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#include "f1ap_itti_messaging.h"
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#include "f1ap_cu_rrc_message_transfer.h"
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#include "common/ran_context.h"
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#include "openair3/UTILS/conversions.h"
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// undefine C_RNTI from
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// openair1/PHY/LTE_TRANSPORT/transport_common.h which
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// replaces in ie->value.choice.C_RNTI, causing
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// a compile error
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#undef C_RNTI
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// Bing Kai: create CU and DU context, and put all the information there.
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uint64_t du_ue_f1ap_id = 0;
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uint32_t f1ap_assoc_id = 0;
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uint32_t f1ap_stream = 0;
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extern f1ap_cudu_inst_t f1ap_cu_inst[MAX_eNB];
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/*
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Initial UL RRC Message Transfer
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*/
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extern RAN_CONTEXT_t RC;
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int CU_handle_INITIAL_UL_RRC_MESSAGE_TRANSFER(instance_t instance,
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uint32_t assoc_id,
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uint32_t stream,
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F1AP_F1AP_PDU_t *pdu) {
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LOG_D(F1AP, "CU_handle_INITIAL_UL_RRC_MESSAGE_TRANSFER\n");
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// decode the F1 message
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// get the rrc message from the contauiner
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// call func rrc_eNB_decode_ccch: <-- needs some update here
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MessageDef *message_p;
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F1AP_InitialULRRCMessageTransfer_t *container;
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F1AP_InitialULRRCMessageTransferIEs_t *ie;
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rnti_t rnti;
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sdu_size_t ccch_sdu_len;
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int CC_id =0;
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DevAssert(pdu != NULL);
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if (stream != 0) {
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LOG_E(F1AP, "[SCTP %d] Received F1 on stream != 0 (%d)\n",
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assoc_id, stream);
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return -1;
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}
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// TODO: use context
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f1ap_stream = stream;
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f1ap_assoc_id = assoc_id;
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container = &pdu->choice.initiatingMessage->value.choice.InitialULRRCMessageTransfer;
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/* GNB_DU_UE_F1AP_ID */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_InitialULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID, true);
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du_ue_f1ap_id = ie->value.choice.GNB_DU_UE_F1AP_ID;
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LOG_D(F1AP, "du_ue_f1ap_id %lu \n", du_ue_f1ap_id);
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/* NRCGI
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* TODO: process NRCGI
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*/
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_InitialULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_NRCGI, true);
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uint64_t nr_cellid;
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BIT_STRING_TO_NR_CELL_IDENTITY(&ie->value.choice.NRCGI.nRCellIdentity,nr_cellid);
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/* RNTI */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_InitialULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_C_RNTI, true);
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BUFFER_TO_INT16(ie->value.choice.C_RNTI.buf, rnti);
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/* RRC Container */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_InitialULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_RRCContainer, true);
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// create an ITTI message and copy SDU
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if (RC.nrrrc[GNB_INSTANCE_TO_MODULE_ID(instance)]->node_type == ngran_gNB_CU) {
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message_p = itti_alloc_new_message (TASK_CU_F1, NR_RRC_MAC_CCCH_DATA_IND);
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memset (NR_RRC_MAC_CCCH_DATA_IND (message_p).sdu, 0, CCCH_SDU_SIZE);
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ccch_sdu_len = ie->value.choice.RRCContainer.size;
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memcpy(NR_RRC_MAC_CCCH_DATA_IND (message_p).sdu, ie->value.choice.RRCContainer.buf,
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ccch_sdu_len);
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} else {
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message_p = itti_alloc_new_message (TASK_CU_F1, RRC_MAC_CCCH_DATA_IND);
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memset (RRC_MAC_CCCH_DATA_IND (message_p).sdu, 0, CCCH_SDU_SIZE);
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ccch_sdu_len = ie->value.choice.RRCContainer.size;
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memcpy(RRC_MAC_CCCH_DATA_IND (message_p).sdu, ie->value.choice.RRCContainer.buf,
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ccch_sdu_len);
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}
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//LOG_I(F1AP, "%s() RRCContainer (CCCH) size %ld: ", __func__,
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// ie->value.choice.RRCContainer.size);
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//for (int i = 0; i < ie->value.choice.RRCContainer.size; i++)
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// printf("%02x ", RRC_MAC_CCCH_DATA_IND (message_p).sdu[i]);
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//printf("\n");
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// Find instance from nr_cellid
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int rrc_inst = -1;
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if (RC.nrrrc[GNB_INSTANCE_TO_MODULE_ID(instance)]->node_type == ngran_gNB_CU) {
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for (int i=0;i<RC.nb_nr_inst;i++) {
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// first get RRC instance (note, no the ITTI instance)
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gNB_RRC_INST *rrc = RC.nrrrc[i];
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if (rrc->nr_cellid == nr_cellid) {
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rrc_inst = i;
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break;
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}
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}
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} else {
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for (int i=0;i<RC.nb_inst;i++) {
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// first get RRC instance (note, no the ITTI instance)
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eNB_RRC_INST *rrc = RC.rrc[i];
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if (rrc->nr_cellid == nr_cellid) {
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rrc_inst = i;
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break;
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}
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}
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}
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AssertFatal(rrc_inst>=0,"couldn't find an RRC instance for nr_cell %llu\n",(unsigned long long int)nr_cellid);
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int f1ap_uid = f1ap_add_ue(&f1ap_cu_inst[rrc_inst], rrc_inst, CC_id, 0, rnti);
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if (f1ap_uid < 0 ) {
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LOG_E(F1AP, "Failed to add UE \n");
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itti_free(ITTI_MSG_ORIGIN_ID(message_p), message_p);
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return -1;
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}
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f1ap_cu_inst[rrc_inst].f1ap_ue[f1ap_uid].du_ue_f1ap_id = du_ue_f1ap_id;
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if (RC.nrrrc[GNB_INSTANCE_TO_MODULE_ID(instance)]->node_type == ngran_gNB_CU) {
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NR_RRC_MAC_CCCH_DATA_IND (message_p).frame = 0;
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NR_RRC_MAC_CCCH_DATA_IND (message_p).sub_frame = 0;
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NR_RRC_MAC_CCCH_DATA_IND (message_p).sdu_size = ccch_sdu_len;
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NR_RRC_MAC_CCCH_DATA_IND (message_p).gnb_index = rrc_inst; // CU instance
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NR_RRC_MAC_CCCH_DATA_IND (message_p).rnti = rnti;
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NR_RRC_MAC_CCCH_DATA_IND (message_p).CC_id = CC_id;
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itti_send_msg_to_task (TASK_RRC_GNB, instance, message_p);
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} else {
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RRC_MAC_CCCH_DATA_IND (message_p).frame = 0;
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RRC_MAC_CCCH_DATA_IND (message_p).sub_frame = 0;
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RRC_MAC_CCCH_DATA_IND (message_p).sdu_size = ccch_sdu_len;
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RRC_MAC_CCCH_DATA_IND (message_p).enb_index = rrc_inst; // CU instance
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RRC_MAC_CCCH_DATA_IND (message_p).rnti = rnti;
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RRC_MAC_CCCH_DATA_IND (message_p).CC_id = CC_id;
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itti_send_msg_to_task (TASK_RRC_ENB, instance, message_p);
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}
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return 0;
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}
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/*
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DL RRC Message Transfer.
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*/
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//void CU_send_DL_RRC_MESSAGE_TRANSFER(F1AP_DLRRCMessageTransfer_t *DLRRCMessageTransfer) {
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int CU_send_DL_RRC_MESSAGE_TRANSFER(instance_t instance,
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f1ap_dl_rrc_message_t *f1ap_dl_rrc)
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{
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F1AP_F1AP_PDU_t pdu;
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F1AP_DLRRCMessageTransfer_t *out;
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F1AP_DLRRCMessageTransferIEs_t *ie;
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uint8_t *buffer;
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uint32_t len;
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/* Create */
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/* 0. Message Type */
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
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pdu.choice.initiatingMessage = (F1AP_InitiatingMessage_t *)calloc(1, sizeof(F1AP_InitiatingMessage_t));
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pdu.choice.initiatingMessage->procedureCode = F1AP_ProcedureCode_id_DLRRCMessageTransfer;
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pdu.choice.initiatingMessage->criticality = F1AP_Criticality_ignore;
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pdu.choice.initiatingMessage->value.present = F1AP_InitiatingMessage__value_PR_DLRRCMessageTransfer;
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out = &pdu.choice.initiatingMessage->value.choice.DLRRCMessageTransfer;
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/* mandatory */
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/* c1. GNB_CU_UE_F1AP_ID */
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_GNB_CU_UE_F1AP_ID;
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ie->value.choice.GNB_CU_UE_F1AP_ID = f1ap_get_cu_ue_f1ap_id(&f1ap_cu_inst[instance], f1ap_dl_rrc->rnti);
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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LOG_I(F1AP, "Setting GNB_CU_UE_F1AP_ID %llu associated with UE RNTI %x (instance %d)\n",
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(unsigned long long int)ie->value.choice.GNB_CU_UE_F1AP_ID, f1ap_dl_rrc->rnti, instance);
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/* mandatory */
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/* c2. GNB_DU_UE_F1AP_ID */
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_GNB_DU_UE_F1AP_ID;
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ie->value.choice.GNB_DU_UE_F1AP_ID = f1ap_get_du_ue_f1ap_id(&f1ap_cu_inst[instance], f1ap_dl_rrc->rnti);
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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LOG_I(F1AP, "GNB_DU_UE_F1AP_ID %llu associated with UE RNTI %x \n", (unsigned long long int)ie->value.choice.GNB_DU_UE_F1AP_ID, f1ap_dl_rrc->rnti);
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/* optional */
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/* c3. oldgNB_DU_UE_F1AP_ID */
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/* if (f1ap_dl_rrc->old_gNB_DU_ue_id != 0xFFFFFFFF) {
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_oldgNB_DU_UE_F1AP_ID;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_NOTHING;
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ie->value.choice.oldgNB_DU_UE_F1AP_ID = f1ap_dl_rrc->old_gNB_DU_ue_id;
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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}*/
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/* mandatory */
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/* c4. SRBID */
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_SRBID;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_SRBID;
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ie->value.choice.SRBID = f1ap_dl_rrc->srb_id;
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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/* optional */
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/* c5. ExecuteDuplication */
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if (f1ap_dl_rrc->execute_duplication) {
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_ExecuteDuplication;
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ie->criticality = F1AP_Criticality_ignore;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_ExecuteDuplication;
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ie->value.choice.ExecuteDuplication = F1AP_ExecuteDuplication_true;
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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}
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// issue in here
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/* mandatory */
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/* c6. RRCContainer */
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_RRCContainer;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_RRCContainer;
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OCTET_STRING_fromBuf(&ie->value.choice.RRCContainer, (const char*)f1ap_dl_rrc->rrc_container, f1ap_dl_rrc->rrc_container_length);
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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//LOG_I(F1AP, "%s() RRCContainer size %d: ", __func__, f1ap_dl_rrc->rrc_container_length);
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//for (int i = 0; i < ie->value.choice.RRCContainer.size; i++)
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// printf("%02x ", f1ap_dl_rrc->rrc_container[i]);
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//printf("\n");
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/* optional */
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/* c7. RAT_FrequencyPriorityInformation */
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/* TODO */
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if (0) {
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ie = (F1AP_DLRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_DLRRCMessageTransferIEs_t));
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ie->id = F1AP_ProtocolIE_ID_id_RAT_FrequencyPriorityInformation;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_DLRRCMessageTransferIEs__value_PR_RAT_FrequencyPriorityInformation;
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ie->value.choice.RAT_FrequencyPriorityInformation.present = F1AP_RAT_FrequencyPriorityInformation_PR_subscriberProfileIDforRFP;
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ie->value.choice.RAT_FrequencyPriorityInformation.choice.subscriberProfileIDforRFP = 123L;
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//ie->value.choice.RAT_FrequencyPriorityInformation.present = F1AP_RAT_FrequencyPriorityInformation_PR_rAT_FrequencySelectionPriority;
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//ie->value.choice.RAT_FrequencyPriorityInformation.choice.rAT_FrequencySelectionPriority = 123L;
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ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
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}
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/* encode */
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if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
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LOG_E(F1AP, "Failed to encode F1 DL RRC MESSAGE TRANSFER \n");
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return -1;
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}
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cu_f1ap_itti_send_sctp_data_req(instance, f1ap_assoc_id /* BK: fix me*/ , buffer, len, 0 /* BK: fix me*/);
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return 0;
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}
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/*
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UL RRC Message Transfer
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*/
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int CU_handle_UL_RRC_MESSAGE_TRANSFER(instance_t instance,
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uint32_t assoc_id,
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uint32_t stream,
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F1AP_F1AP_PDU_t *pdu) {
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LOG_D(F1AP, "CU_handle_UL_RRC_MESSAGE_TRANSFER \n");
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F1AP_ULRRCMessageTransfer_t *container;
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F1AP_ULRRCMessageTransferIEs_t *ie;
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MessageDef *message_p;
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uint64_t cu_ue_f1ap_id;
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uint64_t du_ue_f1ap_id;
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uint64_t srb_id;
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DevAssert(pdu != NULL);
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if (stream != 0) {
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LOG_E(F1AP, "[SCTP %d] Received F1 on stream != 0 (%d)\n",
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assoc_id, stream);
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return -1;
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}
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container = &pdu->choice.initiatingMessage->value.choice.ULRRCMessageTransfer;
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/* GNB_CU_UE_F1AP_ID */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID, true);
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cu_ue_f1ap_id = ie->value.choice.GNB_CU_UE_F1AP_ID;
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LOG_D(F1AP, "cu_ue_f1ap_id %lu associated with RNTI %x\n", cu_ue_f1ap_id, f1ap_get_rnti_by_cu_id(&f1ap_cu_inst[instance], cu_ue_f1ap_id));
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/* GNB_DU_UE_F1AP_ID */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID, true);
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du_ue_f1ap_id = ie->value.choice.GNB_DU_UE_F1AP_ID;
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LOG_D(F1AP, "du_ue_f1ap_id %lu associated with RNTI %x\n", du_ue_f1ap_id, f1ap_get_rnti_by_cu_id(&f1ap_cu_inst[instance], du_ue_f1ap_id));
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/* mandatory */
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/* SRBID */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_SRBID, true);
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srb_id = ie->value.choice.SRBID;
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if (srb_id < 1 )
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LOG_E(F1AP, "Unexpected UL RRC MESSAGE for srb_id %lu \n", srb_id);
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else
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LOG_D(F1AP, "UL RRC MESSAGE for srb_id %lu in DCCH \n", srb_id);
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// issue in here
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/* mandatory */
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/* RRC Container */
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F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ULRRCMessageTransferIEs_t, ie, container,
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F1AP_ProtocolIE_ID_id_RRCContainer, true);
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// print message in debug mode
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// create an ITTI message and copy SDU
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// message_p = itti_alloc_new_message (TASK_CU_F1, NR_RRC_DCCH_DATA_IND);
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// NR_RRC_DCCH_DATA_IND (message_p).sdu_p = malloc(ie->value.choice.RRCContainer.size);
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// NR_RRC_DCCH_DATA_IND (message_p).sdu_size = ie->value.choice.RRCContainer.size;
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// memcpy(NR_RRC_DCCH_DATA_IND (message_p).sdu_p, ie->value.choice.RRCContainer.buf,
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// ie->value.choice.RRCContainer.size);
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// NR_RRC_DCCH_DATA_IND (message_p).dcch_index = srb_id;
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// NR_RRC_DCCH_DATA_IND (message_p).rnti = f1ap_get_rnti_by_cu_id(&f1ap_cu_inst[instance], cu_ue_f1ap_id);
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// NR_RRC_DCCH_DATA_IND (message_p).module_id = instance;
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// NR_RRC_DCCH_DATA_IND (message_p).gNB_index = instance; // not needed for CU
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// itti_send_msg_to_task(TASK_RRC_GNB, instance, message_p);
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/*
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message_p = itti_alloc_new_message (TASK_CU_F1, RRC_DCCH_DATA_IND);
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RRC_DCCH_DATA_IND (message_p).sdu_p = malloc(ie->value.choice.RRCContainer.size);
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RRC_DCCH_DATA_IND (message_p).sdu_size = ie->value.choice.RRCContainer.size;
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memcpy(RRC_DCCH_DATA_IND (message_p).sdu_p, ie->value.choice.RRCContainer.buf,
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ie->value.choice.RRCContainer.size);
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RRC_DCCH_DATA_IND (message_p).dcch_index = srb_id;
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RRC_DCCH_DATA_IND (message_p).rnti = f1ap_get_rnti_by_cu_id(&f1ap_cu_inst[instance], cu_ue_f1ap_id);
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RRC_DCCH_DATA_IND (message_p).module_id = instance;
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RRC_DCCH_DATA_IND (message_p).eNB_index = instance; // not needed for CU
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itti_send_msg_to_task(TASK_RRC_ENB, instance, message_p);
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*/
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protocol_ctxt_t ctxt;
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ctxt.module_id = instance;
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ctxt.instance = instance;
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ctxt.rnti = f1ap_get_rnti_by_cu_id(&f1ap_cu_inst[instance], cu_ue_f1ap_id);
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ctxt.enb_flag = 1;
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ctxt.eNB_index = 0;
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ctxt.configured = 1;
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mem_block_t *mb = get_free_mem_block(ie->value.choice.RRCContainer.size,__func__);
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memcpy((void*)mb->data,(void*)ie->value.choice.RRCContainer.buf,ie->value.choice.RRCContainer.size);
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LOG_I(F1AP, "Calling pdcp_data_ind for UE RNTI %x srb_id %lu with size %ld (DCCH) \n", ctxt.rnti, srb_id, ie->value.choice.RRCContainer.size);
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//LOG_I(F1AP, "%s() RRCContainer size %lu: ", __func__, ie->value.choice.RRCContainer.size);
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//for (int i = 0; i < ie->value.choice.RRCContainer.size; i++)
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// printf("%02x ", mb->data[i]);
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//printf("\n");
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pdcp_data_ind (&ctxt,
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1, // srb_flag
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0, // embms_flag
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srb_id,
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ie->value.choice.RRCContainer.size,
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mb);
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return 0;
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}
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