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Use F1AP lib for F1 Setup Request in stack

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This commit is contained in:
Guido Casati
2024-09-27 11:22:03 +02:00
parent c433f4de15
commit 1d8e896567
6 changed files with 38 additions and 339 deletions
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openair2/F1AP/f1ap_cu_interface_management.c
+13 -158
View File
@@ -36,6 +36,7 @@
#include "f1ap_cu_interface_management.h"
#include "f1ap_default_values.h"
#include "lib/f1ap_interface_management.h"
#include "lib/f1ap_lib_common.h"
int CU_handle_RESET_ACKNOWLEDGE(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
@@ -47,15 +48,6 @@ int CU_send_RESET_ACKNOWLEDGE(sctp_assoc_t assoc_id, const f1ap_reset_ack_t *ack
AssertFatal(1 == 0, "Not implemented yet\n");
}
static uint8_t *cp_octet_string(const OCTET_STRING_t *os, int *len)
{
uint8_t *buf = calloc(os->size, sizeof(*buf));
AssertFatal(buf != NULL, "out of memory\n");
memcpy(buf, os->buf, os->size);
*len = os->size;
return buf;
}
static int read_slice_info(const F1AP_ServedPLMNs_Item_t *plmn, nssai_t *nssai, int max_nssai)
{
if (plmn->iE_Extensions == NULL)
@@ -82,168 +74,31 @@ static int read_slice_info(const F1AP_ServedPLMNs_Item_t *plmn, nssai_t *nssai,
return ssl->list.count;
}
/*
F1 Setup
*/
/**
* @brief F1AP Setup Request decoding (9.2.1.4 of 3GPP TS 38.473) and transfer to RRC
*/
int CU_handle_F1_SETUP_REQUEST(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
{
LOG_D(F1AP, "CU_handle_F1_SETUP_REQUEST\n");
F1AP_F1SetupRequest_t *container;
F1AP_F1SetupRequestIEs_t *ie;
int i = 0;
DevAssert(pdu != NULL);
container = &pdu->choice.initiatingMessage->value.choice.F1SetupRequest;
/* F1 Setup Request == Non UE-related procedure -> stream 0 */
if (stream != 0) {
LOG_W(F1AP, "[SCTP %d] Received f1 setup request on stream != 0 (%d)\n",
assoc_id, stream);
}
f1ap_setup_req_t msg = {0};
/* Decode */
if (!decode_f1ap_setup_request(pdu, &msg)) {
LOG_E(F1AP, "cannot decode F1AP Setup Request\n");
free_f1ap_setup_request(&msg);
return -1;
}
/* Send to RRC (ITTI) */
MessageDef *message_p = itti_alloc_new_message(TASK_CU_F1, 0, F1AP_SETUP_REQ);
message_p->ittiMsgHeader.originInstance = assoc_id;
f1ap_setup_req_t *req = &F1AP_SETUP_REQ(message_p);
/* Transaction ID*/
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_F1SetupRequestIEs_t, ie, container, F1AP_ProtocolIE_ID_id_TransactionID, true);
req->transaction_id = ie->value.choice.TransactionID;
LOG_D(F1AP, "req->transaction_id %lu \n", req->transaction_id);
/* gNB_DU_id */
// this function exits if the ie is mandatory
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_F1SetupRequestIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_gNB_DU_ID, true);
asn_INTEGER2ulong(&ie->value.choice.GNB_DU_ID, &req->gNB_DU_id);
LOG_D(F1AP, "req->gNB_DU_id %lu \n", req->gNB_DU_id);
/* gNB_DU_name */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_F1SetupRequestIEs_t, ie, container, F1AP_ProtocolIE_ID_id_gNB_DU_Name, false);
req->gNB_DU_name = NULL;
if (ie != NULL) {
req->gNB_DU_name = calloc(ie->value.choice.GNB_DU_Name.size + 1, sizeof(char));
memcpy(req->gNB_DU_name, ie->value.choice.GNB_DU_Name.buf, ie->value.choice.GNB_DU_Name.size);
LOG_D(F1AP, "req->gNB_DU_name %s \n", req->gNB_DU_name);
}
/* GNB_DU_Served_Cells_List */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_F1SetupRequestIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_gNB_DU_Served_Cells_List, true);
req->num_cells_available = ie->value.choice.GNB_DU_Served_Cells_List.list.count;
LOG_D(F1AP, "req->num_cells_available %d \n", req->num_cells_available);
for (i=0; i<req->num_cells_available; i++) {
F1AP_GNB_DU_Served_Cells_Item_t *served_cells_item = &(((F1AP_GNB_DU_Served_Cells_ItemIEs_t *)
ie->value.choice.GNB_DU_Served_Cells_List.list.array[i])->
value.choice.GNB_DU_Served_Cells_Item);
F1AP_Served_Cell_Information_t *servedCellInformation= &served_cells_item->served_Cell_Information;
/* tac */
if (servedCellInformation->fiveGS_TAC) {
req->cell[i].info.tac = malloc(sizeof(*req->cell[i].info.tac));
AssertFatal(req->cell[i].info.tac != NULL, "out of memory\n");
OCTET_STRING_TO_INT24(servedCellInformation->fiveGS_TAC, *req->cell[i].info.tac);
LOG_D(F1AP, "req->tac[%d] %d \n", i, *req->cell[i].info.tac);
}
/* - nRCGI */
TBCD_TO_MCC_MNC(&(servedCellInformation->nRCGI.pLMN_Identity),
req->cell[i].info.plmn.mcc,
req->cell[i].info.plmn.mnc,
req->cell[i].info.plmn.mnc_digit_length);
// NR cellID
BIT_STRING_TO_NR_CELL_IDENTITY(&servedCellInformation->nRCGI.nRCellIdentity,
req->cell[i].info.nr_cellid);
LOG_D(F1AP, "[SCTP %d] Received nRCGI: MCC %d, MNC %d, CELL_ID %llu\n", assoc_id,
req->cell[i].info.plmn.mcc,
req->cell[i].info.plmn.mnc,
(long long unsigned int)req->cell[i].info.nr_cellid);
/* - nRPCI */
req->cell[i].info.nr_pci = servedCellInformation->nRPCI;
LOG_D(F1AP, "req->nr_pci[%d] %d \n", i, req->cell[i].info.nr_pci);
AssertFatal(servedCellInformation->servedPLMNs.list.count == 1, "only one PLMN handled\n");
req->cell[i].info.num_ssi = read_slice_info(servedCellInformation->servedPLMNs.list.array[0], req->cell[i].info.nssai, 16);
// FDD Cells
if (servedCellInformation->nR_Mode_Info.present==F1AP_NR_Mode_Info_PR_fDD) {
req->cell[i].info.mode = F1AP_MODE_FDD;
f1ap_fdd_info_t *FDDs = &req->cell[i].info.fdd;
F1AP_FDD_Info_t * fDD_Info=servedCellInformation->nR_Mode_Info.choice.fDD;
FDDs->ul_freqinfo.arfcn = fDD_Info->uL_NRFreqInfo.nRARFCN;
AssertFatal(fDD_Info->uL_NRFreqInfo.freqBandListNr.list.count == 1, "cannot handle more than one frequency band\n");
for (int f=0; f < fDD_Info->uL_NRFreqInfo.freqBandListNr.list.count; f++) {
F1AP_FreqBandNrItem_t * FreqItem=fDD_Info->uL_NRFreqInfo.freqBandListNr.list.array[f];
FDDs->ul_freqinfo.band = FreqItem->freqBandIndicatorNr;
AssertFatal(FreqItem->supportedSULBandList.list.count == 0, "cannot handle SUL bands!\n");
}
FDDs->dl_freqinfo.arfcn = fDD_Info->dL_NRFreqInfo.nRARFCN;
int dlBands=fDD_Info->dL_NRFreqInfo.freqBandListNr.list.count;
AssertFatal(dlBands == 1, "cannot handled more than one frequency band\n");
for (int dlB=0; dlB < dlBands; dlB++) {
F1AP_FreqBandNrItem_t * FreqItem=fDD_Info->dL_NRFreqInfo.freqBandListNr.list.array[dlB];
FDDs->dl_freqinfo.band = FreqItem->freqBandIndicatorNr;
int num_available_supported_SULBands = FreqItem->supportedSULBandList.list.count;
AssertFatal(num_available_supported_SULBands == 0, "cannot handle SUL bands!\n");
}
FDDs->ul_tbw.scs = fDD_Info->uL_Transmission_Bandwidth.nRSCS;
FDDs->ul_tbw.nrb = nrb_lut[fDD_Info->uL_Transmission_Bandwidth.nRNRB];
FDDs->dl_tbw.scs = fDD_Info->dL_Transmission_Bandwidth.nRSCS;
FDDs->dl_tbw.nrb = nrb_lut[fDD_Info->dL_Transmission_Bandwidth.nRNRB];
} else if (servedCellInformation->nR_Mode_Info.present==F1AP_NR_Mode_Info_PR_tDD) {
req->cell[i].info.mode = F1AP_MODE_TDD;
f1ap_tdd_info_t *TDDs = &req->cell[i].info.tdd;
F1AP_TDD_Info_t *tDD_Info = servedCellInformation->nR_Mode_Info.choice.tDD;
TDDs->freqinfo.arfcn = tDD_Info->nRFreqInfo.nRARFCN;
AssertFatal(tDD_Info->nRFreqInfo.freqBandListNr.list.count == 1, "cannot handle more than one frequency band\n");
for (int f=0; f < tDD_Info->nRFreqInfo.freqBandListNr.list.count; f++) {
struct F1AP_FreqBandNrItem * FreqItem=tDD_Info->nRFreqInfo.freqBandListNr.list.array[f];
TDDs->freqinfo.band = FreqItem->freqBandIndicatorNr;
int num_available_supported_SULBands = FreqItem->supportedSULBandList.list.count;
AssertFatal(num_available_supported_SULBands == 0, "cannot hanlde SUL bands!\n");
}
TDDs->tbw.scs = tDD_Info->transmission_Bandwidth.nRSCS;
TDDs->tbw.nrb = nrb_lut[tDD_Info->transmission_Bandwidth.nRNRB];
} else {
AssertFatal(false, "unknown NR Mode info %d\n", servedCellInformation->nR_Mode_Info.present);
}
/* MeasurementConfig */
if (servedCellInformation->measurementTimingConfiguration.size > 0)
req->cell[i].info.measurement_timing_config =
cp_octet_string(&servedCellInformation->measurementTimingConfiguration, &req->cell[i].info.measurement_timing_config_len);
struct F1AP_GNB_DU_System_Information * DUsi=served_cells_item->gNB_DU_System_Information;
if (DUsi != NULL) {
// System Information
req->cell[i].sys_info = calloc(1, sizeof(*req->cell[i].sys_info));
AssertFatal(req->cell[i].sys_info != NULL, "out of memory\n");
f1ap_gnb_du_system_info_t *sys_info = req->cell[i].sys_info;
/* mib */
sys_info->mib = calloc(DUsi->mIB_message.size, sizeof(char));
memcpy(sys_info->mib, DUsi->mIB_message.buf, DUsi->mIB_message.size);
sys_info->mib_length = DUsi->mIB_message.size;
/* sib1 */
sys_info->sib1 = calloc(DUsi->sIB1_message.size, sizeof(char));
memcpy(sys_info->sib1, DUsi->sIB1_message.buf, DUsi->sIB1_message.size);
sys_info->sib1_length = DUsi->sIB1_message.size;
}
}
/* Handle RRC Version */
F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_F1SetupRequestIEs_t, ie, container,
F1AP_ProtocolIE_ID_id_GNB_DU_RRC_Version, true);
// Latest RRC Version: "This IE is not used in this release."
// BIT_STRING_to_uint8(&ie->value.choice.RRC_Version.latest_RRC_Version);
if (ie->value.choice.RRC_Version.iE_Extensions) {
F1AP_ProtocolExtensionContainer_10696P228_t *ext =
(F1AP_ProtocolExtensionContainer_10696P228_t *)ie->value.choice.RRC_Version.iE_Extensions;
if (ext->list.count > 0) {
F1AP_RRC_Version_ExtIEs_t *rrcext = ext->list.array[0];
OCTET_STRING_t *os = &rrcext->extensionValue.choice.OCTET_STRING_SIZE_3_;
DevAssert(os->size == 3);
for (int i = 0; i < 3; ++i)
req->rrc_ver[i] = os->buf[i];
}
}
*req = msg; /* "move" message into ITTI, RRC thread will free it */
itti_send_msg_to_task(TASK_RRC_GNB, GNB_MODULE_ID_TO_INSTANCE(instance), message_p);
return 0;
}