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openairinterface5g/openair2/F1AP/f1ap_du_rrc_message_transfer.c
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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"
// undefine C_RNTI from
// openair1/PHY/LTE_TRANSPORT/transport_common.h which
// replaces in ie->value.choice.C_RNTI, causing
// a compile error
#undef C_RNTI
extern f1ap_setup_req_t *f1ap_du_data;
f1ap_cudu_ue_inst_t f1ap_du_ue[MAX_eNB];
/* 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) {
LOG_D(DU_F1AP, "DU_handle_DL_RRC_MESSAGE_TRANSFER \n");
MessageDef *message_p;
F1AP_DLRRCMessageTransfer_t *container;
F1AP_DLRRCMessageTransferIEs_t *ie;
uint8_t *buffer;
uint32_t len;
uint64_t cu_ue_f1ap_id;
uint64_t du_ue_f1ap_id;
uint64_t srb_id;
int executeDuplication;
sdu_size_t ccch_sdu_len;
uint64_t subscriberProfileIDforRFP;
uint64_t rAT_FrequencySelectionPriority;
DevAssert(pdu != NULL);
if (stream != 0) {
LOG_E(F1AP, "[SCTP %d] Received F1 on stream != 0 (%d)\n",
assoc_id, stream);
return -1;
}
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(DU_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(DU_F1AP, "du_ue_f1ap_id %lu associated with UE RNTI %x \n",
du_ue_f1ap_id,
f1ap_get_rnti_by_du_id(&f1ap_du_ue[instance],du_ue_f1ap_id)); // this should be the one transmitted via initial ul rrc message transfer
if (f1ap_du_add_cu_ue_id(&f1ap_du_ue[instance],du_ue_f1ap_id,cu_ue_f1ap_id) < 0 ) {
LOG_E(DU_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);
srb_id = ie->value.choice.SRBID;
LOG_D(DU_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(DU_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);
// BK: need check
// create an ITTI message and copy SDU
message_p = itti_alloc_new_message (TASK_DU_F1, RRC_MAC_CCCH_DATA_IND);
memset (RRC_MAC_CCCH_DATA_IND (message_p).sdu, 0, CCCH_SDU_SIZE);
ccch_sdu_len = ie->value.choice.RRCContainer.size;
memcpy(RRC_MAC_CCCH_DATA_IND (message_p).sdu, ie->value.choice.RRCContainer.buf,
ccch_sdu_len);
LOG_D(DU_F1AP, "RRCContainer(CCCH) :");
for (int i=0;i<ie->value.choice.RRCContainer.size;i++) LOG_D(DU_F1AP, "%2x ",RRC_MAC_CCCH_DATA_IND (message_p).sdu[i]);
LOG_D(DU_F1AP, "\n");
/* 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_subscriberProfileIDforRFP:
subscriberProfileIDforRFP = ie->value.choice.RAT_FrequencyPriorityInformation.choice.subscriberProfileIDforRFP;
break;
case F1AP_RAT_FrequencyPriorityInformation_PR_rAT_FrequencySelectionPriority:
rAT_FrequencySelectionPriority = ie->value.choice.RAT_FrequencyPriorityInformation.choice.rAT_FrequencySelectionPriority;
break;
}
}
return 0;
}
int DU_send_UL_RRC_MESSAGE_TRANSFER(instance_t instance,
f1ap_ul_rrc_message_t *f1ap_ul_rrc) {
LOG_D(DU_F1AP, "DU_send_UL_RRC_MESSAGE_TRANSFER \n");
F1AP_F1AP_PDU_t pdu;
F1AP_ULRRCMessageTransfer_t *out;
F1AP_ULRRCMessageTransferIEs_t *ie;
uint8_t *buffer;
uint32_t len;
/* Create */
/* 0. Message Type */
memset(&pdu, 0, sizeof(pdu));
pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage = (F1AP_InitiatingMessage_t *)calloc(1, sizeof(F1AP_InitiatingMessage_t));
pdu.choice.initiatingMessage->procedureCode = F1AP_ProcedureCode_id_ULRRCMessageTransfer;
pdu.choice.initiatingMessage->criticality = F1AP_Criticality_ignore;
pdu.choice.initiatingMessage->value.present = F1AP_InitiatingMessage__value_PR_ULRRCMessageTransfer;
out = &pdu.choice.initiatingMessage->value.choice.ULRRCMessageTransfer;
/* mandatory */
/* c1. GNB_CU_UE_F1AP_ID */
ie = (F1AP_ULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_ULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_GNB_CU_UE_F1AP_ID;
ie->value.choice.GNB_CU_UE_F1AP_ID = f1ap_du_ue[instance].cu_ue_f1ap_id[f1ap_get_uid_by_rnti(&f1ap_du_ue[instance], f1ap_ul_rrc->rnti)];
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
/* c2. GNB_DU_UE_F1AP_ID */
ie = (F1AP_ULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_ULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_GNB_DU_UE_F1AP_ID;
ie->value.choice.GNB_DU_UE_F1AP_ID = f1ap_du_ue[instance].du_ue_f1ap_id[f1ap_get_uid_by_rnti(&f1ap_du_ue[instance], f1ap_ul_rrc->rnti)];
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
/* c3. SRBID */
ie = (F1AP_ULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_ULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_SRBID;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_SRBID;
ie->value.choice.SRBID = f1ap_ul_rrc->srb_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
// issue in here
/* mandatory */
/* c4. RRCContainer */
ie = (F1AP_ULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_ULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_RRCContainer;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_ULRRCMessageTransferIEs__value_PR_RRCContainer;
OCTET_STRING_fromBuf(&ie->value.choice.RRCContainer, f1ap_ul_rrc->rrc_container, f1ap_ul_rrc->rrc_container_length);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(DU_F1AP, "Failed to encode F1 setup request\n");
return -1;
}
du_f1ap_itti_send_sctp_data_req(instance, f1ap_du_data->assoc_id, buffer, len, f1ap_du_data->default_sctp_stream_id);
return 0;
}
/* UL RRC Message Transfer */
int DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER(module_id_t module_idP,
int CC_idP,
int UE_id,
rnti_t rntiP,
uint8_t *sduP,
sdu_size_t sdu_lenP) {
F1AP_F1AP_PDU_t pdu;
F1AP_InitialULRRCMessageTransfer_t *out;
F1AP_InitialULRRCMessageTransferIEs_t *ie;
uint8_t *buffer;
uint32_t len;
int f1ap_uid = f1ap_add_ue (&f1ap_du_ue[module_idP], module_idP, CC_idP,UE_id, rntiP);
if (f1ap_uid < 0 ) {
LOG_E(DU_F1AP, "Failed to add UE \n");
return -1;
}
/* Create */
/* 0. Message Type */
memset(&pdu, 0, sizeof(pdu));
pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage = (F1AP_InitiatingMessage_t *)calloc(1, sizeof(F1AP_InitiatingMessage_t));
pdu.choice.initiatingMessage->procedureCode = F1AP_ProcedureCode_id_InitialULRRCMessageTransfer;
pdu.choice.initiatingMessage->criticality = F1AP_Criticality_ignore;
pdu.choice.initiatingMessage->value.present = F1AP_InitiatingMessage__value_PR_InitialULRRCMessageTransfer;
out = &pdu.choice.initiatingMessage->value.choice.InitialULRRCMessageTransfer;
/* mandatory */
/* c1. GNB_DU_UE_F1AP_ID */
ie = (F1AP_InitialULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_InitialULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_GNB_DU_UE_F1AP_ID;
ie->value.choice.GNB_DU_UE_F1AP_ID = f1ap_du_ue[module_idP].du_ue_f1ap_id[f1ap_uid];
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
/* c2. NRCGI */
ie = (F1AP_InitialULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_InitialULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_NRCGI;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_NRCGI;
F1AP_NRCGI_t nRCGI;
MCC_MNC_TO_PLMNID(f1ap_du_data->mcc[0], f1ap_du_data->mnc[0], f1ap_du_data->mnc_digit_length[0],
&nRCGI.pLMN_Identity);
NR_CELL_ID_TO_BIT_STRING(f1ap_du_data->nr_cellid[0], &nRCGI.nRCellIdentity);
ie->value.choice.NRCGI = nRCGI;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
/* c3. C_RNTI */ // 16
ie = (F1AP_InitialULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_InitialULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_C_RNTI;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_C_RNTI;
C_RNTI_TO_BIT_STRING(rntiP, &ie->value.choice.C_RNTI);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
/* c4. RRCContainer */
ie = (F1AP_InitialULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_InitialULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_RRCContainer;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_RRCContainer;
OCTET_STRING_fromBuf(&ie->value.choice.RRCContainer, sduP, sdu_lenP);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
/* c5. DUtoCURRCContainer */
if (0) {
ie = (F1AP_InitialULRRCMessageTransferIEs_t *)calloc(1, sizeof(F1AP_InitialULRRCMessageTransferIEs_t));
ie->id = F1AP_ProtocolIE_ID_id_DUtoCURRCContainer;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_InitialULRRCMessageTransferIEs__value_PR_DUtoCURRCContainer;
OCTET_STRING_fromBuf(&ie->value.choice.DUtoCURRCContainer, "dummy_val",
strlen("dummy_val"));
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(DU_F1AP, "Failed to encode F1 setup request\n");
return -1;
}
du_f1ap_itti_send_sctp_data_req(module_idP, f1ap_du_data->assoc_id, buffer, len, f1ap_du_data->default_sctp_stream_id);
return 0;
}
void init_f1ap_du_ue_inst (void) {
memset(f1ap_du_ue, 0, sizeof(f1ap_du_ue));
}
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