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openairinterface5g/openair2/F1AP/f1ap_du_rrc_message_transfer.c
T
Cedric Roux c0c3a737ed asn1c: use better version of asn1c 
We don't work much on asn1c. The version we use has several bugs.
There is an active community out there that fixes bugs and improves
asn1c. Let's use their version.
2023-06-01 18:26:00 +02:00

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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
*/
/*! \file f1ap_du_rrc_message_transfer.c
* \brief f1ap rrc message transfer for DU
* \author EURECOM/NTUST
* \date 2018
* \version 0.1
* \company Eurecom
* \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
* \note
* \warning
*/
#include "f1ap_common.h"
#include "f1ap_encoder.h"
#include "f1ap_decoder.h"
#include "f1ap_itti_messaging.h"
#include "f1ap_du_rrc_message_transfer.h"
#include "uper_decoder.h"
#include "NR_DL-CCCH-Message.h"
#include "NR_UL-CCCH-Message.h"
#include "NR_DL-DCCH-Message.h"
#include "NR_UL-DCCH-Message.h"
// for SRB1_logicalChannelConfig_defaultValue
#include "rrc_extern.h"
#include "common/ran_context.h"
#include "openair2/RRC/NR/rrc_gNB_UE_context.h"
#include "asn1_msg.h"
#include "intertask_interface.h"
#include "LAYER2/NR_MAC_gNB/mac_proto.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_rrc_dl_handler.h"
/* DL RRC Message Transfer */
int DU_handle_DL_RRC_MESSAGE_TRANSFER(instance_t instance,
uint32_t assoc_id,
uint32_t stream,
F1AP_F1AP_PDU_t *pdu) {
F1AP_DLRRCMessageTransfer_t *container;
F1AP_DLRRCMessageTransferIEs_t *ie;
uint64_t cu_ue_f1ap_id;
uint64_t du_ue_f1ap_id;
int executeDuplication;
//uint64_t subscriberProfileIDforRFP;
//uint64_t rAT_FrequencySelectionPriority;
DevAssert(pdu != NULL);
container = &pdu->choice.initiatingMessage->value.choice.DLRRCMessageTransfer;
/* GNB_CU_UE_F1AP_ID */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID, true);
cu_ue_f1ap_id = ie->value.choice.GNB_CU_UE_F1AP_ID;
LOG_D(F1AP, "cu_ue_f1ap_id %lu \n", cu_ue_f1ap_id);
/* GNB_DU_UE_F1AP_ID */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID, true);
du_ue_f1ap_id = ie->value.choice.GNB_DU_UE_F1AP_ID;
LOG_D(F1AP, "du_ue_f1ap_id %lu associated with UE RNTI %x \n",
du_ue_f1ap_id,
f1ap_get_rnti_by_du_id(DUtype, instance, du_ue_f1ap_id)); // this should be the one transmitted via initial ul rrc message transfer
if (f1ap_du_add_cu_ue_id(instance,du_ue_f1ap_id, cu_ue_f1ap_id) < 0 ) {
LOG_E(F1AP, "Failed to find the F1AP UID \n");
//return -1;
}
/* optional */
/* oldgNB_DU_UE_F1AP_ID */
if (0) {
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_oldgNB_DU_UE_F1AP_ID, true);
}
/* mandatory */
/* SRBID */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_SRBID, true);
uint64_t srb_id = ie->value.choice.SRBID;
LOG_D(F1AP, "srb_id %lu \n", srb_id);
/* optional */
/* ExecuteDuplication */
if (0) {
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_ExecuteDuplication, true);
executeDuplication = ie->value.choice.ExecuteDuplication;
LOG_D(F1AP, "ExecuteDuplication %d \n", executeDuplication);
}
// issue in here
/* mandatory */
/* RRC Container */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_RRCContainer, true);
/* optional */
/* RAT_FrequencyPriorityInformation */
if (0) {
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_DLRRCMessageTransferIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_RAT_FrequencyPriorityInformation, true);
switch(ie->value.choice.RAT_FrequencyPriorityInformation.present) {
case F1AP_RAT_FrequencyPriorityInformation_PR_eNDC:
//subscriberProfileIDforRFP = ie->value.choice.RAT_FrequencyPriorityInformation.choice.subscriberProfileIDforRFP;
break;
case F1AP_RAT_FrequencyPriorityInformation_PR_nGRAN:
//rAT_FrequencySelectionPriority = ie->value.choice.RAT_FrequencyPriorityInformation.choice.rAT_FrequencySelectionPriority;
break;
default:
LOG_W(F1AP, "unhandled IE RAT_FrequencyPriorityInformation.present\n");
break;
}
}
f1ap_dl_rrc_message_t dl_rrc = {
.rrc_container_length = ie->value.choice.RRCContainer.size,
.rrc_container = ie->value.choice.RRCContainer.buf,
.rnti = f1ap_get_rnti_by_du_id(DUtype, instance, du_ue_f1ap_id),
.srb_id = srb_id
};
dl_rrc_message(instance, &dl_rrc);
return 0;
}
/* UL RRC Message Transfer */
int DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER(instance_t instanceP,
int CC_idP,
int UE_id,
rnti_t rntiP,
const uint8_t *sduP,
sdu_size_t sdu_lenP,
const uint8_t *sdu2P,
sdu_size_t sdu2_lenP) {
F1AP_F1AP_PDU_t pdu= {0};
F1AP_InitialULRRCMessageTransfer_t *out;
uint8_t *buffer=NULL;
uint32_t len=0;
int f1ap_uid = f1ap_add_ue (DUtype, instanceP, rntiP);
if (f1ap_uid < 0 ) {
LOG_E(F1AP, "Failed to add UE \n");
return -1;
}
/* Create */
/* 0. Message Type */
pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
asn1cCalloc(pdu.choice.initiatingMessage, tmp);
tmp->procedureCode = F1AP_ProcedureCode_id_InitialULRRCMessageTransfer;
tmp->criticality = F1AP_Criticality_ignore;
tmp->value.present = F1AP_InitiatingMessage__value_PR_InitialULRRCMessageTransfer;
out = &tmp->value.choice.InitialULRRCMessageTransfer;
/* mandatory */
/* c1. GNB_DU_UE_F1AP_ID */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie1);
ie1->id = F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID;
ie1->criticality = F1AP_Criticality_reject;
ie1->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_GNB_DU_UE_F1AP_ID;
ie1->value.choice.GNB_DU_UE_F1AP_ID = getCxt(DUtype, instanceP)->f1ap_ue[f1ap_uid].du_ue_f1ap_id;
/* mandatory */
/* c2. NRCGI */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie2);
ie2->id = F1AP_ProtocolIE_ID_id_NRCGI;
ie2->criticality = F1AP_Criticality_reject;
ie2->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_NRCGI;
//Fixme: takes always the first cell
addnRCGI(ie2->value.choice.NRCGI, getCxt(DUtype, instanceP)->setupReq.cell);
/* mandatory */
/* c3. C_RNTI */ // 16
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie3);
ie3->id = F1AP_ProtocolIE_ID_id_C_RNTI;
ie3->criticality = F1AP_Criticality_reject;
ie3->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_C_RNTI;
ie3->value.choice.C_RNTI=rntiP;
/* mandatory */
/* c4. RRCContainer */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie4);
ie4->id = F1AP_ProtocolIE_ID_id_RRCContainer;
ie4->criticality = F1AP_Criticality_reject;
ie4->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_RRCContainer;
OCTET_STRING_fromBuf(&ie4->value.choice.RRCContainer, (const char *)sduP, sdu_lenP);
/* optional */
/* c5. DUtoCURRCContainer */
if (sdu2P) {
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie5);
ie5->id = F1AP_ProtocolIE_ID_id_DUtoCURRCContainer;
ie5->criticality = F1AP_Criticality_reject;
ie5->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_DUtoCURRCContainer;
OCTET_STRING_fromBuf(&ie5->value.choice.DUtoCURRCContainer,
(const char *)sdu2P,
sdu2_lenP);
}
/* mandatory */
/* c6. Transaction ID (integer value) */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_InitialULRRCMessageTransferIEs_t, ie6);
ie6->id = F1AP_ProtocolIE_ID_id_TransactionID;
ie6->criticality = F1AP_Criticality_ignore;
ie6->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_TransactionID;
ie6->value.choice.TransactionID = F1AP_get_next_transaction_identifier(f1ap_req(false, instanceP)->gNB_DU_id, f1ap_req(false, instanceP)->gNB_DU_id);
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode F1 INITIAL UL RRC MESSAGE TRANSFER\n");
return -1;
}
f1ap_itti_send_sctp_data_req(false, instanceP, buffer, len, getCxt(DUtype, instanceP)->default_sctp_stream_id);
return 0;
}
int DU_send_UL_NR_RRC_MESSAGE_TRANSFER(instance_t instance,
const f1ap_ul_rrc_message_t *msg) {
const rnti_t rnti = msg->rnti;
F1AP_F1AP_PDU_t pdu= {0};
F1AP_ULRRCMessageTransfer_t *out;
uint8_t *buffer = NULL;
uint32_t len;
LOG_D(F1AP, "[DU %ld] %s: size %d UE RNTI %x in SRB %d\n",
instance, __func__, msg->rrc_container_length, rnti, msg->srb_id);
//for (int i = 0;i < msg->rrc_container_length; i++)
// printf("%02x ", msg->rrc_container[i]);
//printf("\n");
/* Create */
/* 0. Message Type */
pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
asn1cCalloc(pdu.choice.initiatingMessage, tmp);
tmp->procedureCode = F1AP_ProcedureCode_id_ULRRCMessageTransfer;
tmp->criticality = F1AP_Criticality_ignore;
tmp->value.present = F1AP_InitiatingMessage__value_PR_ULRRCMessageTransfer;
out = &tmp->value.choice.ULRRCMessageTransfer;
/* mandatory */
/* c1. GNB_CU_UE_F1AP_ID */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_ULRRCMessageTransferIEs_t, ie1);
ie1->id = F1AP_ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID;
ie1->criticality = F1AP_Criticality_reject;
ie1->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_GNB_CU_UE_F1AP_ID;
ie1->value.choice.GNB_CU_UE_F1AP_ID = f1ap_get_cu_ue_f1ap_id(DUtype, instance, rnti);
/* mandatory */
/* c2. GNB_DU_UE_F1AP_ID */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_ULRRCMessageTransferIEs_t, ie2);
ie2->id = F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID;
ie2->criticality = F1AP_Criticality_reject;
ie2->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_GNB_DU_UE_F1AP_ID;
ie2->value.choice.GNB_DU_UE_F1AP_ID = f1ap_get_du_ue_f1ap_id(DUtype, instance, rnti);
/* mandatory */
/* c3. SRBID */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_ULRRCMessageTransferIEs_t, ie3);
ie3->id = F1AP_ProtocolIE_ID_id_SRBID;
ie3->criticality = F1AP_Criticality_reject;
ie3->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_SRBID;
ie3->value.choice.SRBID = msg->srb_id;
// issue in here
/* mandatory */
/* c4. RRCContainer */
asn1cSequenceAdd(out->protocolIEs.list, F1AP_ULRRCMessageTransferIEs_t, ie4);
ie4->id = F1AP_ProtocolIE_ID_id_RRCContainer;
ie4->criticality = F1AP_Criticality_reject;
ie4->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_RRCContainer;
OCTET_STRING_fromBuf(&ie4->value.choice.RRCContainer,
(const char *) msg->rrc_container,
msg->rrc_container_length);
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode F1 UL RRC MESSAGE TRANSFER \n");
return -1;
}
f1ap_itti_send_sctp_data_req(false, instance, buffer, len, getCxt(DUtype, instance)->default_sctp_stream_id);
return 0;
}
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