345 lines
15 KiB
Go
345 lines
15 KiB
Go
//
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// Copyright 2019 AT&T Intellectual Property
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// Copyright 2019 Nokia
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file 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.apache.org/licenses/LICENSE-2.0
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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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// This source code is part of the near-RT RIC (RAN Intelligent Controller)
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// platform project (RICP).
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package converters
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// #cgo CFLAGS: -I../3rdparty/asn1codec/inc/ -I../3rdparty/asn1codec/e2ap_engine/
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// #cgo LDFLAGS: -L ../3rdparty/asn1codec/lib/ -L../3rdparty/asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
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// #include <asn1codec_utils.h>
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// #include <x2setup_response_wrapper.h>
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import "C"
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import (
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"e2mgr/e2pdus"
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"e2mgr/logger"
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"fmt"
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"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
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"unsafe"
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)
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const (
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maxCellinengNB = 16384
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maxofNRNeighbours = 1024
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maxnoofNrCellBands = 32
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)
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type EndcSetupResponseConverter struct {
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logger *logger.Logger
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}
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type IEndcSetupResponseConverter interface {
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UnpackEndcSetupResponseAndExtract(packedBuf []byte) (*entities.GlobalNbId, *entities.Gnb, error)
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}
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func NewEndcSetupResponseConverter(logger *logger.Logger) *EndcSetupResponseConverter {
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return &EndcSetupResponseConverter{
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logger: logger,
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}
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}
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func getNRFreqInfo(freqInfo C.NRFreqInfo_t) (*entities.NrFrequencyInfo, error) {
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var info *entities.NrFrequencyInfo
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info = &entities.NrFrequencyInfo{NrArFcn: uint64(freqInfo.nRARFCN)}
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if freqInfo.sULInformation != nil {
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info.SulInformation = &entities.NrFrequencyInfo_SulInformation{SulArFcn: uint64((*C.SULInformation_t)(freqInfo.sULInformation).sUL_ARFCN)}
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if value, err := getNR_TxBW((*C.SULInformation_t)(freqInfo.sULInformation).sUL_TxBW); err == nil {
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info.SulInformation.SulTransmissionBandwidth = value
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} else {
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return nil, err
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}
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}
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if freqInfo.freqBandListNr.list.count > 0 && freqInfo.freqBandListNr.list.count <= maxnoofNrCellBands {
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count := int(freqInfo.freqBandListNr.list.count)
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freqBandListNr_slice := (*[1 << 30]*C.FreqBandNrItem_t)(unsafe.Pointer(freqInfo.freqBandListNr.list.array))[:count:count]
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for _, freqBandNrItem := range freqBandListNr_slice {
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frequencyBand := &entities.FrequencyBandItem{NrFrequencyBand: uint32(freqBandNrItem.freqBandIndicatorNr)}
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if freqBandNrItem.supportedSULBandList.list.count > 0 && freqBandNrItem.supportedSULBandList.list.count <= maxnoofNrCellBands {
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count := int(freqBandNrItem.supportedSULBandList.list.count)
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supportedSULBandList_slice := (*[1 << 30]*C.SupportedSULFreqBandItem_t)(unsafe.Pointer(freqBandNrItem.supportedSULBandList.list.array))[:count:count]
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for _, supportedSULFreqBandItem := range supportedSULBandList_slice {
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frequencyBand.SupportedSulBands = append(frequencyBand.SupportedSulBands, uint32(supportedSULFreqBandItem.freqBandIndicatorNr))
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}
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}
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info.FrequencyBands = append(info.FrequencyBands, frequencyBand)
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}
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}
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return info, nil
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}
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func getNR_TxBW(txBW C.NR_TxBW_t) (*entities.NrTransmissionBandwidth, error) {
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var bw *entities.NrTransmissionBandwidth
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bw = &entities.NrTransmissionBandwidth{Nrscs: entities.Nrscs(1 + int64(txBW.nRSCS))}
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bw.Ncnrb = entities.Ncnrb(1 + int64(txBW.nRNRB))
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return bw, nil
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}
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func getnrModeInfoFDDInfo(fdd *C.FDD_InfoServedNRCell_Information_t) (*entities.ServedNRCellInformation_ChoiceNRMode_FddInfo, error) {
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var fddInfo *entities.ServedNRCellInformation_ChoiceNRMode_FddInfo
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if info, err := getNRFreqInfo(fdd.ul_NRFreqInfo); err == nil {
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fddInfo = &entities.ServedNRCellInformation_ChoiceNRMode_FddInfo{UlFreqInfo: info}
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} else {
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return nil, err
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}
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if info, err := getNRFreqInfo(fdd.dl_NRFreqInfo); err == nil {
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fddInfo.DlFreqInfo = info
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} else {
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return nil, err
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}
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if bw, err := getNR_TxBW(fdd.ul_NR_TxBW); err == nil {
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fddInfo.UlTransmissionBandwidth = bw
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} else {
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return nil, err
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}
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if bw, err := getNR_TxBW(fdd.dl_NR_TxBW); err == nil {
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fddInfo.DlTransmissionBandwidth = bw
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} else {
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return nil, err
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}
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return fddInfo, nil
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}
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func getnrModeInfoTDDInfo(tdd *C.TDD_InfoServedNRCell_Information_t) (*entities.ServedNRCellInformation_ChoiceNRMode_TddInfo, error) {
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var tddInfo *entities.ServedNRCellInformation_ChoiceNRMode_TddInfo
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if info, err := getNRFreqInfo(tdd.nRFreqInfo); err == nil {
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tddInfo = &entities.ServedNRCellInformation_ChoiceNRMode_TddInfo{NrFreqInfo: info}
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} else {
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return nil, err
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}
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if bw, err := getNR_TxBW(tdd.nR_TxBW); err == nil {
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tddInfo.TransmissionBandwidth = bw
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} else {
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return nil, err
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}
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return tddInfo, nil
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}
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func getNRNeighbourInformation_ChoiceNRMode_FDDInfo(fdd *C.FDD_InfoNeighbourServedNRCell_Information_t) (*entities.NrNeighbourInformation_ChoiceNRMode_FddInfo, error) {
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var fddInfo *entities.NrNeighbourInformation_ChoiceNRMode_FddInfo
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if info, err := getNRFreqInfo(fdd.ul_NRFreqInfo); err == nil {
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fddInfo = &entities.NrNeighbourInformation_ChoiceNRMode_FddInfo{UlarFcnFreqInfo: info}
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} else {
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return nil, err
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}
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if info, err := getNRFreqInfo(fdd.dl_NRFreqInfo); err == nil {
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fddInfo.DlarFcnFreqInfo = info
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} else {
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return nil, err
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}
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return fddInfo, nil
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}
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func getNRNeighbourInformation_ChoiceNRMode_TDDInfo(tdd *C.TDD_InfoNeighbourServedNRCell_Information_t) (*entities.NrNeighbourInformation_ChoiceNRMode_TddInfo, error) {
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var tddInfo *entities.NrNeighbourInformation_ChoiceNRMode_TddInfo
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if info, err := getNRFreqInfo(tdd.nRFreqInfo); err == nil {
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tddInfo = &entities.NrNeighbourInformation_ChoiceNRMode_TddInfo{ArFcnNrFreqInfo: info}
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} else {
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return nil, err
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}
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return tddInfo, nil
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}
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func getnRNeighbourInfo(neighbour_Information *C.NRNeighbour_Information_t) ([]*entities.NrNeighbourInformation, error) {
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var neighbours []*entities.NrNeighbourInformation
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if neighbour_Information != nil && neighbour_Information.list.count > 0 && neighbour_Information.list.count <= maxofNRNeighbours {
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count := int(neighbour_Information.list.count)
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neighbour_Information_slice := (*[1 << 30]*C.NRNeighbour_Information__Member)(unsafe.Pointer(neighbour_Information.list.array))[:count:count]
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for _, member := range neighbour_Information_slice {
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info := &entities.NrNeighbourInformation{NrPci: uint32(member.nrpCI)}
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//pLMN_Identity:nRcellIdentifier
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plmnId := C.GoBytes(unsafe.Pointer(member.nrCellID.pLMN_Identity.buf), C.int(member.nrCellID.pLMN_Identity.size))
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nRcellIdentifier := C.GoBytes(unsafe.Pointer(member.nrCellID.nRcellIdentifier.buf), C.int(member.nrCellID.nRcellIdentifier.size))
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info.NrCgi = fmt.Sprintf("%02x:%02x", plmnId, nRcellIdentifier)
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if member.fiveGS_TAC != nil {
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info.Stac5G = fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(member.fiveGS_TAC.buf), C.int(member.fiveGS_TAC.size)))
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}
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if member.configured_TAC != nil {
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info.ConfiguredStac = fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(member.configured_TAC.buf), C.int(member.configured_TAC.size)))
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}
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switch member.nRNeighbourModeInfo.present {
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case C.NRNeighbour_Information__Member__nRNeighbourModeInfo_PR_fdd:
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if fdd, err := getNRNeighbourInformation_ChoiceNRMode_FDDInfo(*(**C.FDD_InfoNeighbourServedNRCell_Information_t)(unsafe.Pointer(&member.nRNeighbourModeInfo.choice[0]))); fdd != nil && err == nil {
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info.ChoiceNrMode, info.NrMode = &entities.NrNeighbourInformation_ChoiceNRMode{Fdd: fdd}, entities.Nr_FDD
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}
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case C.NRNeighbour_Information__Member__nRNeighbourModeInfo_PR_tdd:
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if tdd, err := getNRNeighbourInformation_ChoiceNRMode_TDDInfo(*(**C.TDD_InfoNeighbourServedNRCell_Information_t)(unsafe.Pointer(&member.nRNeighbourModeInfo.choice[0]))); tdd != nil && err == nil {
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info.ChoiceNrMode, info.NrMode = &entities.NrNeighbourInformation_ChoiceNRMode{Tdd: tdd}, entities.Nr_TDD
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}
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}
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neighbours = append(neighbours, info)
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}
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}
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return neighbours, nil
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}
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func getServedNRCells(servedNRcellsManagementList *C.ServedNRcellsENDCX2ManagementList_t) ([]*entities.ServedNRCell, error) {
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var servedNRCells []*entities.ServedNRCell
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if servedNRcellsManagementList != nil && servedNRcellsManagementList.list.count > 0 && servedNRcellsManagementList.list.count <= maxCellinengNB {
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count := int(servedNRcellsManagementList.list.count)
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servedNRcellsENDCX2ManagementList__Member_slice := (*[1 << 30]*C.ServedNRcellsENDCX2ManagementList__Member)(unsafe.Pointer(servedNRcellsManagementList.list.array))[:count:count]
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for _, servedNRcellsENDCX2ManagementList__Member := range servedNRcellsENDCX2ManagementList__Member_slice {
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servedNRCellInfo := servedNRcellsENDCX2ManagementList__Member.servedNRCellInfo
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servedNRCell := &entities.ServedNRCell{ServedNrCellInformation: &entities.ServedNRCellInformation{NrPci: uint32(servedNRCellInfo.nrpCI)}}
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//pLMN_Identity:nRcellIdentifier
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plmnId := C.GoBytes(unsafe.Pointer(servedNRCellInfo.nrCellID.pLMN_Identity.buf), C.int(servedNRCellInfo.nrCellID.pLMN_Identity.size))
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nRcellIdentifier := C.GoBytes(unsafe.Pointer(servedNRCellInfo.nrCellID.nRcellIdentifier.buf), C.int(servedNRCellInfo.nrCellID.nRcellIdentifier.size))
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servedNRCell.ServedNrCellInformation.CellId = fmt.Sprintf("%02x:%02x", plmnId, nRcellIdentifier)
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if servedNRCellInfo.fiveGS_TAC != nil {
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servedNRCell.ServedNrCellInformation.Stac5G = fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(servedNRCellInfo.fiveGS_TAC.buf), C.int(servedNRCellInfo.fiveGS_TAC.size)))
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}
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if servedNRCellInfo.configured_TAC != nil {
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servedNRCell.ServedNrCellInformation.ConfiguredStac = fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(servedNRCellInfo.configured_TAC.buf), C.int(servedNRCellInfo.configured_TAC.size)))
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}
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if servedNRCellInfo.broadcastPLMNs.list.count > 0 && servedNRCellInfo.broadcastPLMNs.list.count <= maxnoofBPLMNs {
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count := int(servedNRCellInfo.broadcastPLMNs.list.count)
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pLMN_Identity_slice := (*[1 << 30]*C.PLMN_Identity_t)(unsafe.Pointer(servedNRCellInfo.broadcastPLMNs.list.array))[:count:count]
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for _, pLMN_Identity := range pLMN_Identity_slice {
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servedNRCell.ServedNrCellInformation.ServedPlmns = append(servedNRCell.ServedNrCellInformation.ServedPlmns, fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(pLMN_Identity.buf), C.int(pLMN_Identity.size))))
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}
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}
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switch servedNRCellInfo.nrModeInfo.present {
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case C.ServedNRCell_Information__nrModeInfo_PR_fdd:
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if fdd, err := getnrModeInfoFDDInfo(*(**C.FDD_InfoServedNRCell_Information_t)(unsafe.Pointer(&servedNRCellInfo.nrModeInfo.choice[0]))); fdd != nil && err == nil {
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servedNRCell.ServedNrCellInformation.ChoiceNrMode, servedNRCell.ServedNrCellInformation.NrMode = &entities.ServedNRCellInformation_ChoiceNRMode{Fdd: fdd}, entities.Nr_FDD
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} else {
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return nil, err
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}
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case C.ServedNRCell_Information__nrModeInfo_PR_tdd:
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if tdd, err := getnrModeInfoTDDInfo(*(**C.TDD_InfoServedNRCell_Information_t)(unsafe.Pointer(&servedNRCellInfo.nrModeInfo.choice[0]))); tdd != nil && err == nil {
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servedNRCell.ServedNrCellInformation.ChoiceNrMode, servedNRCell.ServedNrCellInformation.NrMode = &entities.ServedNRCellInformation_ChoiceNRMode{Tdd: tdd}, entities.Nr_TDD
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} else {
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return nil, err
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}
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}
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neighbours, err := getnRNeighbourInfo(servedNRcellsENDCX2ManagementList__Member.nRNeighbourInfo)
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if err != nil {
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return nil, err
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}
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servedNRCell.NrNeighbourInfos = neighbours
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servedNRCells = append(servedNRCells, servedNRCell)
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}
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}
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return servedNRCells, nil
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}
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// Populate the GNB structure with data from the pdu
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// Return the GNB and the associated key which can later be used to retrieve the GNB from the database.
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func endcX2SetupResponseToProtobuf(pdu *C.E2AP_PDU_t) (*entities.GlobalNbId, *entities.Gnb, error) {
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var gnb *entities.Gnb
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var globalNbId *entities.GlobalNbId
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if pdu.present == C.E2AP_PDU_PR_successfulOutcome {
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//dereference a union of pointers (C union is represented as a byte array with the size of the largest member)
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successfulOutcome := *(**C.SuccessfulOutcome_t)(unsafe.Pointer(&pdu.choice[0]))
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if successfulOutcome != nil && successfulOutcome.value.present == C.SuccessfulOutcome__value_PR_ENDCX2SetupResponse {
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endcX2SetupResponse := (*C.ENDCX2SetupResponse_t)(unsafe.Pointer(&successfulOutcome.value.choice[0]))
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if endcX2SetupResponse != nil && endcX2SetupResponse.protocolIEs.list.count > 0 {
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count := int(endcX2SetupResponse.protocolIEs.list.count)
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endcX2SetupResponse_IEs_slice := (*[1 << 30]*C.ENDCX2SetupResponse_IEs_t)(unsafe.Pointer(endcX2SetupResponse.protocolIEs.list.array))[:count:count]
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for _, endcX2SetupResponse_IE := range endcX2SetupResponse_IEs_slice {
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if endcX2SetupResponse_IE.value.present == C.ENDCX2SetupResponse_IEs__value_PR_RespondingNodeType_EndcX2Setup {
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respondingNodeType := (*C.RespondingNodeType_EndcX2Setup_t)(unsafe.Pointer(&endcX2SetupResponse_IE.value.choice[0]))
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switch respondingNodeType.present {
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case C.RespondingNodeType_EndcX2Setup_PR_respond_en_gNB:
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en_gNB_ENDCX2SetupReqAckIEs_Container := *(**C.ProtocolIE_Container_119P89_t)(unsafe.Pointer(&respondingNodeType.choice[0]))
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if en_gNB_ENDCX2SetupReqAckIEs_Container != nil && en_gNB_ENDCX2SetupReqAckIEs_Container.list.count > 0 {
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count := int(en_gNB_ENDCX2SetupReqAckIEs_Container.list.count)
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en_gNB_ENDCX2SetupReqAckIEs_slice := (*[1 << 30]*C.En_gNB_ENDCX2SetupReqAckIEs_t)(unsafe.Pointer(en_gNB_ENDCX2SetupReqAckIEs_Container.list.array))[:count:count]
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for _, en_gNB_ENDCX2SetupReqAckIE := range en_gNB_ENDCX2SetupReqAckIEs_slice {
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switch en_gNB_ENDCX2SetupReqAckIE.value.present {
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case C.En_gNB_ENDCX2SetupReqAckIEs__value_PR_GlobalGNB_ID:
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globalGNB_ID := (*C.GlobalGNB_ID_t)(unsafe.Pointer(&en_gNB_ENDCX2SetupReqAckIE.value.choice[0]))
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plmnId := C.GoBytes(unsafe.Pointer(globalGNB_ID.pLMN_Identity.buf), C.int(globalGNB_ID.pLMN_Identity.size))
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if globalGNB_ID.gNB_ID.present == C.GNB_ID_PR_gNB_ID {
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gnbIdAsBitString := (*C.BIT_STRING_t)(unsafe.Pointer(&globalGNB_ID.gNB_ID.choice[0]))
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globalNbId = &entities.GlobalNbId{}
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globalNbId.NbId = fmt.Sprintf("%02x", C.GoBytes(unsafe.Pointer(gnbIdAsBitString.buf), C.int(gnbIdAsBitString.size)))
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globalNbId.PlmnId = fmt.Sprintf("%02x", plmnId)
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}
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case C.En_gNB_ENDCX2SetupReqAckIEs__value_PR_ServedNRcellsENDCX2ManagementList:
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servedCells, err := getServedNRCells((*C.ServedNRcellsENDCX2ManagementList_t)(unsafe.Pointer(&en_gNB_ENDCX2SetupReqAckIE.value.choice[0])))
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if err != nil {
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return globalNbId, nil, err
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}
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gnb = &entities.Gnb{}
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gnb.ServedNrCells = servedCells
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}
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}
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}
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case C.RespondingNodeType_EndcX2Setup_PR_respond_eNB:
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/*ignored*/
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}
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}
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}
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}
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}
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}
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return globalNbId, gnb, nil
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}
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func (c *EndcSetupResponseConverter) UnpackEndcSetupResponseAndExtract(packedBuf []byte) (*entities.GlobalNbId, *entities.Gnb, error) {
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pdu, err := UnpackX2apPdu(c.logger, e2pdus.MaxAsn1CodecAllocationBufferSize, len(packedBuf), packedBuf, e2pdus.MaxAsn1CodecMessageBufferSize)
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if err != nil {
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return nil, nil, err
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}
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defer C.delete_pdu(pdu)
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return endcX2SetupResponseToProtobuf(pdu)
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}
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