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openairinterface5g/openair2/F1AP/f1ap_du_interface_management.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_interface_management.c
* \brief f1ap interface management 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_itti_messaging.h"
#include "f1ap_du_interface_management.h"
#include "lib/f1ap_interface_management.h"
#include "lib/f1ap_lib_common.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_rrc_dl_handler.h"
#include "assertions.h"
#include "GNB_APP/gnb_paramdef.h"
int DU_handle_RESET(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
LOG_D(F1AP, "DU_handle_RESET\n");\
F1AP_Reset_t *container;
F1AP_ResetIEs_t *ie;
DevAssert(pdu != NULL);
container = &pdu->choice.initiatingMessage->value.choice.Reset;
/* Reset == Non UE-related procedure -> stream 0 */
if (stream != 0) {
LOG_W(F1AP, "[SCTP %d] Received Reset on stream != 0 (%d)\n",
assoc_id, stream);
}
MessageDef *msg_p = itti_alloc_new_message(TASK_DU_F1, 0, F1AP_RESET);
msg_p->ittiMsgHeader.originInstance = assoc_id;
f1ap_reset_t *f1ap_reset = &F1AP_RESET(msg_p);
/* Transaction ID */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ResetIEs_t, ie, container, F1AP_ProtocolIE_ID_id_TransactionID, true);
f1ap_reset->transaction_id = ie->value.choice.TransactionID;
LOG_D(F1AP, "req->transaction_id %lu \n", f1ap_reset->transaction_id);
/* Cause */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ResetIEs_t, ie, container, F1AP_ProtocolIE_ID_id_Cause, true);
switch(ie->value.choice.Cause.present)
{
case F1AP_Cause_PR_radioNetwork:
LOG_D(F1AP, "Cause: Radio Network\n");
f1ap_reset->cause = F1AP_CAUSE_RADIO_NETWORK;
f1ap_reset->cause_value = ie->value.choice.Cause.choice.radioNetwork;
break;
case F1AP_Cause_PR_transport:
LOG_D(F1AP, "Cause: Transport\n");
f1ap_reset->cause = F1AP_CAUSE_TRANSPORT;
f1ap_reset->cause_value = ie->value.choice.Cause.choice.transport;
break;
case F1AP_Cause_PR_protocol:
LOG_D(F1AP, "Cause: Protocol\n");
f1ap_reset->cause = F1AP_CAUSE_PROTOCOL;
f1ap_reset->cause_value = ie->value.choice.Cause.choice.protocol;
break;
case F1AP_Cause_PR_misc:
LOG_D(F1AP, "Cause: Misc\n");
f1ap_reset->cause = F1AP_CAUSE_MISC;
f1ap_reset->cause_value = ie->value.choice.Cause.choice.misc;
break;
default:
AssertFatal(1==0,"Unknown cause\n");
}
/* ResetType */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_ResetIEs_t, ie, container, F1AP_ProtocolIE_ID_id_ResetType, true);
switch(ie->value.choice.ResetType.present) {
case F1AP_ResetType_PR_f1_Interface:
LOG_D(F1AP, "ResetType: F1 Interface\n");
f1ap_reset->reset_type = F1AP_RESET_ALL;
break;
case F1AP_ResetType_PR_partOfF1_Interface:
LOG_D(F1AP, "ResetType: Part of F1 Interface\n");
f1ap_reset->reset_type = F1AP_RESET_PART_OF_F1_INTERFACE;
break;
default:
AssertFatal(1==0,"Unknown reset type\n");
}
/* Part of F1 Interface */
if (f1ap_reset->reset_type == F1AP_RESET_PART_OF_F1_INTERFACE) {
AssertFatal(1==0, "Not implemented yet\n");
}
f1_reset_cu_initiated(f1ap_reset);
return 0;
}
int DU_send_RESET_ACKNOWLEDGE(sctp_assoc_t assoc_id, const f1ap_reset_ack_t *ack)
{
F1AP_F1AP_PDU_t pdu= {0};
uint8_t *buffer;
uint32_t len;
/* Create */
/* 0. pdu Type */
pdu.present = F1AP_F1AP_PDU_PR_successfulOutcome;
asn1cCalloc(pdu.choice.successfulOutcome, successMsg);
successMsg->procedureCode = F1AP_ProcedureCode_id_Reset;
successMsg->criticality = F1AP_Criticality_reject;
successMsg->value.present = F1AP_SuccessfulOutcome__value_PR_ResetAcknowledge;
F1AP_ResetAcknowledge_t *f1ResetAcknowledge = &successMsg->value.choice.ResetAcknowledge;
/* mandatory */
/* c1. Transaction ID (integer value) */
asn1cSequenceAdd(f1ResetAcknowledge->protocolIEs.list, F1AP_ResetAcknowledgeIEs_t, ieC1);
ieC1->id = F1AP_ProtocolIE_ID_id_TransactionID;
ieC1->criticality = F1AP_Criticality_reject;
ieC1->value.present = F1AP_ResetAcknowledgeIEs__value_PR_TransactionID;
ieC1->value.choice.TransactionID = ack->transaction_id;
/* TODO: (Optional) partialF1Interface, criticality diagnostics */
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode F1ResetAcknowledge\n");
return -1;
}
/* send */
ASN_STRUCT_RESET(asn_DEF_F1AP_F1AP_PDU, &pdu);
f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
return 0;
}
/**
* @brief F1AP Setup Request
*/
int DU_send_F1_SETUP_REQUEST(sctp_assoc_t assoc_id, const f1ap_setup_req_t *setup_req)
{
LOG_D(F1AP, "DU_send_F1_SETUP_REQUEST\n");
F1AP_F1AP_PDU_t *pdu = encode_f1ap_setup_request(setup_req);
uint8_t *buffer;
uint32_t len;
/* encode */
if (f1ap_encode_pdu(pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode F1 setup request\n");
/* free PDU */
ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
return -1;
}
/* free PDU */
ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
/* Send to ITTI */
f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
return 0;
}
int DU_handle_F1_SETUP_RESPONSE(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
LOG_D(F1AP, "DU_handle_F1_SETUP_RESPONSE\n");
/* Decode */
f1ap_setup_resp_t resp = {0};
if (!decode_f1ap_setup_response(pdu, &resp)) {
LOG_E(F1AP, "cannot decode F1AP Setup Response\n");
free_f1ap_setup_response(&resp);
return -1;
}
LOG_D(F1AP, "Sending F1AP_SETUP_RESP ITTI message\n");
f1_setup_response(&resp);
return 0;
}
/**
* @brief F1 Setup Failure handler (DU)
*/
int DU_handle_F1_SETUP_FAILURE(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
f1ap_setup_failure_t fail;
if (!decode_f1ap_setup_failure(pdu, &fail)) {
LOG_E(F1AP, "Failed to decode F1AP Setup Failure\n");
return -1;
}
f1_setup_failure(&fail);
return 0;
}
/**
* @brief F1 gNB-DU Configuration Update: encoding and ITTI transmission
*/
int DU_send_gNB_DU_CONFIGURATION_UPDATE(sctp_assoc_t assoc_id, f1ap_gnb_du_configuration_update_t *msg)
{
uint8_t *buffer=NULL;
uint32_t len=0;
/* encode F1AP message */
F1AP_F1AP_PDU_t *pdu = encode_f1ap_du_configuration_update(msg);
/* free anfter encoding */
free_f1ap_du_configuration_update(msg);
/* encode F1AP pdu */
if (f1ap_encode_pdu(pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode F1 gNB-DU CONFIGURATION UPDATE\n");
return -1;
}
/* transfer the message */
ASN_STRUCT_FREE(asn_DEF_F1AP_F1AP_PDU, pdu);
f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
return 0;
}
int DU_handle_gNB_CU_CONFIGURATION_UPDATE(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
LOG_D(F1AP, "DU_handle_gNB_CU_CONFIGURATION_UPDATE\n");
AssertFatal(pdu->present == F1AP_F1AP_PDU_PR_initiatingMessage,
"pdu->present != F1AP_F1AP_PDU_PR_initiatingMessage\n");
AssertFatal(pdu->choice.initiatingMessage->procedureCode == F1AP_ProcedureCode_id_gNBCUConfigurationUpdate,
"pdu->choice.initiatingMessage->procedureCode != F1AP_ProcedureCode_id_gNBCUConfigurationUpdate\n");
AssertFatal(pdu->choice.initiatingMessage->criticality == F1AP_Criticality_reject,
"pdu->choice.initiatingMessage->criticality != F1AP_Criticality_reject\n");
AssertFatal(pdu->choice.initiatingMessage->value.present == F1AP_InitiatingMessage__value_PR_GNBCUConfigurationUpdate,
"pdu->choice.initiatingMessage->value.present != F1AP_InitiatingMessage__value_PR_GNBCUConfigurationUpdate\n");
F1AP_GNBCUConfigurationUpdate_t *in = &pdu->choice.initiatingMessage->value.choice.GNBCUConfigurationUpdate;
F1AP_GNBCUConfigurationUpdateIEs_t *ie;
int TransactionId = -1;
int num_cells_to_activate = 0;
F1AP_Cells_to_be_Activated_List_Item_t *cell;
MessageDef *msg_p = itti_alloc_new_message (TASK_DU_F1, 0, F1AP_GNB_CU_CONFIGURATION_UPDATE);
LOG_D(F1AP, "F1AP: gNB_CU_Configuration_Update: protocolIEs.list.count %d\n",
in->protocolIEs.list.count);
for (int i=0; i < in->protocolIEs.list.count; i++) {
ie = in->protocolIEs.list.array[i];
switch (ie->id) {
case F1AP_ProtocolIE_ID_id_TransactionID:
AssertFatal(ie->criticality == F1AP_Criticality_reject,
"ie->criticality != F1AP_Criticality_reject\n");
AssertFatal(ie->value.present == F1AP_GNBCUConfigurationUpdateIEs__value_PR_TransactionID,
"ie->value.present != F1AP_GNBCUConfigurationUpdateIEs__value_PR_TransactionID\n");
TransactionId=ie->value.choice.TransactionID;
LOG_D(F1AP, "F1AP: GNB-CU-ConfigurationUpdate: TransactionId %d\n",
TransactionId);
break;
case F1AP_ProtocolIE_ID_id_Cells_to_be_Activated_List: {
AssertFatal(ie->criticality == F1AP_Criticality_reject,
"ie->criticality != F1AP_Criticality_reject\n");
AssertFatal(ie->value.present == F1AP_GNBCUConfigurationUpdateIEs__value_PR_Cells_to_be_Activated_List,
"ie->value.present != F1AP_GNBCUConfigurationUpdateIEs__value_PR_Cells_to_be_Activated_List\n");
num_cells_to_activate = ie->value.choice.Cells_to_be_Activated_List.list.count;
LOG_D(F1AP, "F1AP: Activating %d cells\n",num_cells_to_activate);
for (int i=0; i<num_cells_to_activate; i++) {
F1AP_Cells_to_be_Activated_List_ItemIEs_t *cells_to_be_activated_list_item_ies = (F1AP_Cells_to_be_Activated_List_ItemIEs_t *) ie->value.choice.Cells_to_be_Activated_List.list.array[i];
AssertFatal(cells_to_be_activated_list_item_ies->id == F1AP_ProtocolIE_ID_id_Cells_to_be_Activated_List_Item,
"cells_to_be_activated_list_item_ies->id != F1AP_ProtocolIE_ID_id_Cells_to_be_Activated_List_Item");
AssertFatal(cells_to_be_activated_list_item_ies->criticality == F1AP_Criticality_reject,
"cells_to_be_activated_list_item_ies->criticality == F1AP_Criticality_reject");
AssertFatal(cells_to_be_activated_list_item_ies->value.present == F1AP_Cells_to_be_Activated_List_ItemIEs__value_PR_Cells_to_be_Activated_List_Item,
"cells_to_be_activated_list_item_ies->value.present == F1AP_Cells_to_be_Activated_List_ItemIEs__value_PR_Cells_to_be_Activated_List_Item");
cell = &cells_to_be_activated_list_item_ies->value.choice.Cells_to_be_Activated_List_Item;
TBCD_TO_MCC_MNC(&cell->nRCGI.pLMN_Identity,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].plmn.mcc,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].plmn.mnc,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].plmn.mnc_digit_length);
LOG_D(F1AP, "nr_cellId : %x %x %x %x %x\n",
cell->nRCGI.nRCellIdentity.buf[0],
cell->nRCGI.nRCellIdentity.buf[1],
cell->nRCGI.nRCellIdentity.buf[2],
cell->nRCGI.nRCellIdentity.buf[3],
cell->nRCGI.nRCellIdentity.buf[4]);
BIT_STRING_TO_NR_CELL_IDENTITY(&cell->nRCGI.nRCellIdentity,
F1AP_GNB_CU_CONFIGURATION_UPDATE (msg_p).cells_to_activate[i].nr_cellid);
F1AP_ProtocolExtensionContainer_10696P112_t *ext = (F1AP_ProtocolExtensionContainer_10696P112_t *)cell->iE_Extensions;
if (ext==NULL)
continue;
for (int cnt=0; cnt<ext->list.count; cnt++) {
F1AP_Cells_to_be_Activated_List_ItemExtIEs_t *cells_to_be_activated_list_itemExtIEs=(F1AP_Cells_to_be_Activated_List_ItemExtIEs_t *)ext->list.array[cnt];
switch (cells_to_be_activated_list_itemExtIEs->id) {
/*
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_NOTHING:
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_GNB_CUSystemInformation,
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_AvailablePLMNList,
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_ExtendedAvailablePLMN_List,
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_IAB_Info_IAB_donor_CU,
case F1AP_Cells_to_be_Activated_List_ItemExtIEs__extensionValue_PR_AvailableSNPN_ID_List
*/
case F1AP_ProtocolIE_ID_id_gNB_CUSystemInformation: {
F1AP_GNB_CU_CONFIGURATION_UPDATE (msg_p).cells_to_activate[i].nrpci = (cell->nRPCI != NULL) ? *cell->nRPCI : 0;
F1AP_GNB_CUSystemInformation_t *gNB_CUSystemInformation = (F1AP_GNB_CUSystemInformation_t *)&cells_to_be_activated_list_itemExtIEs->extensionValue.choice.GNB_CUSystemInformation;
F1AP_GNB_CU_CONFIGURATION_UPDATE (msg_p).cells_to_activate[i].num_SI = gNB_CUSystemInformation->sibtypetobeupdatedlist.list.count;
AssertFatal(ext->list.count==1,"At least one SI message should be there, and only 1 for now!\n");
LOG_D(F1AP,
"F1AP: Cell %d MCC %d MNC %d NRCellid %lx num_si %d\n",
i,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].plmn.mcc,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].plmn.mnc,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].nr_cellid,
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].num_SI);
for (int si = 0; si < gNB_CUSystemInformation->sibtypetobeupdatedlist.list.count; si++) {
F1AP_SibtypetobeupdatedListItem_t *sib_item = gNB_CUSystemInformation->sibtypetobeupdatedlist.list.array[si];
size_t size = sib_item->sIBmessage.size;
f1ap_sib_msg_t *SI_msg = &F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).cells_to_activate[i].SI_msg[si];
SI_msg->SI_container_length = size;
LOG_D(F1AP, "F1AP: SI_container_length[%d][%ld] %ld bytes\n", i, sib_item->sIBtype, size);
SI_msg->SI_container = malloc(SI_msg->SI_container_length);
memcpy((void *)SI_msg->SI_container, (void *)sib_item->sIBmessage.buf, size);
SI_msg->SI_type = sib_item->sIBtype;
}
break;
}
case F1AP_ProtocolIE_ID_id_AvailablePLMNList:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id_AvailablePLMNList not supported yet\n");
break;
case F1AP_ProtocolIE_ID_id_ExtendedAvailablePLMN_List:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id_AvailablePLMNList not supported yet\n");
break;
case F1AP_ProtocolIE_ID_id_IAB_Info_IAB_donor_CU:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id_AvailablePLMNList not supported yet\n");
break;
case F1AP_ProtocolIE_ID_id_AvailableSNPN_ID_List:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id_AvailablePLMNList not supported yet\n");
break;
default:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id %d unknown\n",(int)cells_to_be_activated_list_itemExtIEs->id);
break;
}
} // for (cnt=...
} // for (cells_to_activate...
break;
} // case F1AP_ProtocolIE_ID_id_Cells_to_be_Activated_List
default:
AssertFatal(1==0,"F1AP_ProtocolIE_ID_id %d unknown\n", (int)ie->id);
break;
} // switch ie
} // for IE
AssertFatal(TransactionId!=-1,"TransactionId was not sent\n");
LOG_D(F1AP,"F1AP: num_cells_to_activate %d\n",num_cells_to_activate);
F1AP_GNB_CU_CONFIGURATION_UPDATE (msg_p).num_cells_to_activate = num_cells_to_activate;
LOG_D(F1AP, "Sending F1AP_GNB_CU_CONFIGURATION_UPDATE ITTI message \n");
itti_send_msg_to_task(TASK_GNB_APP, GNB_MODULE_ID_TO_INSTANCE(assoc_id), msg_p);
return 0;
}
int DU_send_gNB_CU_CONFIGURATION_UPDATE_FAILURE(sctp_assoc_t assoc_id,
f1ap_gnb_cu_configuration_update_failure_t *GNBCUConfigurationUpdateFailure) {
AssertFatal(1==0,"received gNB CU CONFIGURATION UPDATE FAILURE with cause %d\n",
GNBCUConfigurationUpdateFailure->cause);
}
int DU_send_gNB_CU_CONFIGURATION_UPDATE_ACKNOWLEDGE(
sctp_assoc_t assoc_id,
f1ap_gnb_cu_configuration_update_acknowledge_t *GNBCUConfigurationUpdateAcknowledge)
{
AssertFatal(GNBCUConfigurationUpdateAcknowledge->num_cells_failed_to_be_activated == 0,
"%d cells failed to activate\n",
GNBCUConfigurationUpdateAcknowledge->num_cells_failed_to_be_activated);
AssertFatal(GNBCUConfigurationUpdateAcknowledge->noofTNLAssociations_to_setup == 0,
"%d TNLAssociations to setup, handle this ...\n",
GNBCUConfigurationUpdateAcknowledge->noofTNLAssociations_to_setup);
AssertFatal(GNBCUConfigurationUpdateAcknowledge->noofTNLAssociations_failed == 0,
"%d TNLAssociations failed\n",
GNBCUConfigurationUpdateAcknowledge->noofTNLAssociations_failed);
AssertFatal(GNBCUConfigurationUpdateAcknowledge->noofDedicatedSIDeliveryNeededUEs == 0,
"%d DedicatedSIDeliveryNeededUEs\n",
GNBCUConfigurationUpdateAcknowledge->noofDedicatedSIDeliveryNeededUEs);
F1AP_F1AP_PDU_t pdu= {0};
uint8_t *buffer=NULL;
uint32_t len=0;
/* Create */
/* 0. pdu Type */
pdu.present = F1AP_F1AP_PDU_PR_successfulOutcome;
asn1cCalloc(pdu.choice.successfulOutcome, tmp);
tmp->procedureCode = F1AP_ProcedureCode_id_gNBCUConfigurationUpdate;
tmp->criticality = F1AP_Criticality_reject;
tmp->value.present = F1AP_SuccessfulOutcome__value_PR_GNBCUConfigurationUpdateAcknowledge;
F1AP_GNBCUConfigurationUpdateAcknowledge_t *out = &tmp->value.choice.GNBCUConfigurationUpdateAcknowledge;
/* mandatory */
/* c1. Transaction ID (integer value)*/
asn1cSequenceAdd(out->protocolIEs.list, F1AP_GNBCUConfigurationUpdateAcknowledgeIEs_t, ie);
ie->id = F1AP_ProtocolIE_ID_id_TransactionID;
ie->criticality = F1AP_Criticality_reject;
ie->value.present = F1AP_GNBCUConfigurationUpdateAcknowledgeIEs__value_PR_TransactionID;
ie->value.choice.TransactionID = F1AP_get_next_transaction_identifier(0, 0);
/* encode */
if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
LOG_E(F1AP, "Failed to encode GNB-DU-Configuration-Update-Acknowledge\n");
return -1;
}
ASN_STRUCT_RESET(asn_DEF_F1AP_F1AP_PDU, &pdu);
f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
return 0;
}
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