forked from acouzens/open5gs
474 lines
19 KiB
C
474 lines
19 KiB
C
/*
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* Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "ngap-build.h"
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ogs_pkbuf_t *ngap_build_pdu_session_resource_setup_request_transfer(
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smf_sess_t *sess)
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{
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smf_bearer_t *qos_flow = NULL;
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ogs_ip_t upf_n3_ip;
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NGAP_PDUSessionResourceSetupRequestTransfer_t message;
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NGAP_PDUSessionResourceSetupRequestTransferIEs_t *ie = NULL;
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NGAP_PDUSessionAggregateMaximumBitRate_t *PDUSessionAggregateMaximumBitRate;
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NGAP_UPTransportLayerInformation_t *UPTransportLayerInformation = NULL;
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NGAP_GTPTunnel_t *gTPTunnel = NULL;
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NGAP_DataForwardingNotPossible_t *DataForwardingNotPossible = NULL;
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NGAP_PDUSessionType_t *PDUSessionType = NULL;
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NGAP_QosFlowSetupRequestList_t *QosFlowSetupRequestList = NULL;
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NGAP_QosFlowSetupRequestItem_t *QosFlowSetupRequestItem = NULL;
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NGAP_QosFlowIdentifier_t *qosFlowIdentifier = NULL;
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NGAP_QosFlowLevelQosParameters_t *qosFlowLevelQosParameters = NULL;
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NGAP_QosCharacteristics_t *qosCharacteristics = NULL;
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NGAP_NonDynamic5QIDescriptor_t *nonDynamic5QI = NULL;
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NGAP_AllocationAndRetentionPriority_t *allocationAndRetentionPriority;
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NGAP_GBR_QosInformation_t *gBR_QosInformation = NULL;
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ogs_assert(sess);
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ogs_debug("PDUSessionResourceSetupRequestTransfer");
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memset(&message, 0, sizeof(NGAP_PDUSessionResourceSetupRequestTransfer_t));
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if (sess->session.ambr.downlink || sess->session.ambr.uplink) {
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ie = CALLOC(1,
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sizeof(NGAP_PDUSessionResourceSetupRequestTransferIEs_t));
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ogs_assert(ie);
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_PDUSessionAggregateMaximumBitRate;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceSetupRequestTransferIEs__value_PR_PDUSessionAggregateMaximumBitRate;
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PDUSessionAggregateMaximumBitRate =
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&ie->value.choice.PDUSessionAggregateMaximumBitRate;
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asn_uint642INTEGER(&PDUSessionAggregateMaximumBitRate->
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pDUSessionAggregateMaximumBitRateUL, sess->session.ambr.uplink);
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asn_uint642INTEGER(&PDUSessionAggregateMaximumBitRate->
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pDUSessionAggregateMaximumBitRateDL, sess->session.ambr.downlink);
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}
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ie = CALLOC(1, sizeof(NGAP_PDUSessionResourceSetupRequestTransferIEs_t));
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ogs_assert(ie);
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_UL_NGU_UP_TNLInformation;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceSetupRequestTransferIEs__value_PR_UPTransportLayerInformation;
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UPTransportLayerInformation = &ie->value.choice.UPTransportLayerInformation;
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gTPTunnel = CALLOC(1, sizeof(struct NGAP_GTPTunnel));
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ogs_assert(gTPTunnel);
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UPTransportLayerInformation->present =
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NGAP_UPTransportLayerInformation_PR_gTPTunnel;
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UPTransportLayerInformation->choice.gTPTunnel = gTPTunnel;
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ogs_assert(OGS_OK == ogs_sockaddr_to_ip(
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sess->upf_n3_addr, sess->upf_n3_addr6, &upf_n3_ip));
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ogs_asn_ip_to_BIT_STRING(&upf_n3_ip, &gTPTunnel->transportLayerAddress);
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ogs_asn_uint32_to_OCTET_STRING(sess->upf_n3_teid, &gTPTunnel->gTP_TEID);
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if (sess->handover.data_forwarding_not_possible == true) {
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ie = CALLOC(1,
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sizeof(NGAP_PDUSessionResourceSetupRequestTransferIEs_t));
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ogs_assert(ie);
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_DataForwardingNotPossible;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceSetupRequestTransferIEs__value_PR_DataForwardingNotPossible;
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DataForwardingNotPossible = &ie->value.choice.DataForwardingNotPossible;
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*DataForwardingNotPossible =
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NGAP_DataForwardingNotPossible_data_forwarding_not_possible;
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}
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ie = CALLOC(1, sizeof(NGAP_PDUSessionResourceSetupRequestTransferIEs_t));
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ogs_assert(ie);
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_PDUSessionType;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceSetupRequestTransferIEs__value_PR_PDUSessionType;
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PDUSessionType = &ie->value.choice.PDUSessionType;
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*PDUSessionType = OGS_PDU_SESSION_TYPE_IPV4;
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switch (sess->session.session_type) {
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case OGS_PDU_SESSION_TYPE_IPV4 :
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*PDUSessionType = NGAP_PDUSessionType_ipv4;
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break;
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case OGS_PDU_SESSION_TYPE_IPV6 :
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*PDUSessionType = NGAP_PDUSessionType_ipv6;
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break;
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case OGS_PDU_SESSION_TYPE_IPV4V6 :
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*PDUSessionType = NGAP_PDUSessionType_ipv4v6;
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break;
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default:
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ogs_fatal("Unknown PDU Session Type [%d]", sess->session.session_type);
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ogs_assert_if_reached();
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}
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ie = CALLOC(1, sizeof(NGAP_PDUSessionResourceSetupRequestTransferIEs_t));
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ogs_assert(ie);
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_QosFlowSetupRequestList;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceSetupRequestTransferIEs__value_PR_QosFlowSetupRequestList;
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QosFlowSetupRequestList = &ie->value.choice.QosFlowSetupRequestList;
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ogs_list_for_each(&sess->bearer_list, qos_flow) {
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QosFlowSetupRequestItem =
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CALLOC(1, sizeof(struct NGAP_QosFlowSetupRequestItem));
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ogs_assert(QosFlowSetupRequestItem);
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ASN_SEQUENCE_ADD(&QosFlowSetupRequestList->list,
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QosFlowSetupRequestItem);
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qosFlowIdentifier = &QosFlowSetupRequestItem->qosFlowIdentifier;
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qosFlowLevelQosParameters =
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&QosFlowSetupRequestItem->qosFlowLevelQosParameters;
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allocationAndRetentionPriority =
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&qosFlowLevelQosParameters->allocationAndRetentionPriority;
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qosCharacteristics = &qosFlowLevelQosParameters->qosCharacteristics;
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nonDynamic5QI = CALLOC(1, sizeof(struct NGAP_NonDynamic5QIDescriptor));
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ogs_assert(nonDynamic5QI);
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qosCharacteristics->choice.nonDynamic5QI = nonDynamic5QI;
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qosCharacteristics->present = NGAP_QosCharacteristics_PR_nonDynamic5QI;
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*qosFlowIdentifier = qos_flow->qfi;
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nonDynamic5QI->fiveQI = qos_flow->qos.index;
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allocationAndRetentionPriority->priorityLevelARP =
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qos_flow->qos.arp.priority_level;
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if (qos_flow->qos.arp.pre_emption_capability ==
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OGS_5GC_PRE_EMPTION_ENABLED)
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allocationAndRetentionPriority->pre_emptionCapability =
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NGAP_Pre_emptionCapability_may_trigger_pre_emption;
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if (qos_flow->qos.arp.pre_emption_vulnerability ==
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OGS_5GC_PRE_EMPTION_ENABLED)
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allocationAndRetentionPriority->pre_emptionVulnerability =
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NGAP_Pre_emptionVulnerability_pre_emptable;
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if (qos_flow->qos.mbr.downlink || qos_flow->qos.mbr.uplink ||
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qos_flow->qos.gbr.downlink || qos_flow->qos.gbr.uplink) {
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ogs_assert(qos_flow->qos.mbr.downlink);
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ogs_assert(qos_flow->qos.mbr.uplink);
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ogs_assert(qos_flow->qos.gbr.downlink);
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ogs_assert(qos_flow->qos.gbr.uplink);
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qosFlowLevelQosParameters->gBR_QosInformation =
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gBR_QosInformation = CALLOC(1, sizeof(*gBR_QosInformation));
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ogs_assert(gBR_QosInformation);
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asn_uint642INTEGER(&gBR_QosInformation->maximumFlowBitRateDL,
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qos_flow->qos.mbr.downlink);
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asn_uint642INTEGER(&gBR_QosInformation->maximumFlowBitRateUL,
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qos_flow->qos.mbr.uplink);
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asn_uint642INTEGER(&gBR_QosInformation->
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guaranteedFlowBitRateDL, qos_flow->qos.gbr.downlink);
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asn_uint642INTEGER(&gBR_QosInformation->
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guaranteedFlowBitRateUL, qos_flow->qos.gbr.uplink);
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}
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}
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return ogs_asn_encode(
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&asn_DEF_NGAP_PDUSessionResourceSetupRequestTransfer, &message);
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}
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ogs_pkbuf_t *ngap_build_pdu_session_resource_modify_request_transfer(
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smf_sess_t *sess, bool qos_presence)
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{
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NGAP_PDUSessionResourceModifyRequestTransfer_t message;
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NGAP_PDUSessionResourceModifyRequestTransferIEs_t *ie = NULL;
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NGAP_QosFlowAddOrModifyRequestList_t *QosFlowAddOrModifyRequestList = NULL;
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NGAP_QosFlowAddOrModifyRequestItem_t *QosFlowAddOrModifyRequestItem = NULL;
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NGAP_QosFlowIdentifier_t *qosFlowIdentifier = NULL;
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NGAP_QosFlowLevelQosParameters_t *qosFlowLevelQosParameters = NULL;
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NGAP_QosCharacteristics_t *qosCharacteristics = NULL;
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NGAP_NonDynamic5QIDescriptor_t *nonDynamic5QI = NULL;
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NGAP_AllocationAndRetentionPriority_t *allocationAndRetentionPriority;
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NGAP_GBR_QosInformation_t *gBR_QosInformation;
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smf_bearer_t *qos_flow = NULL;
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ogs_assert(sess);
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ogs_debug("PDUSessionResourceModifyRequestTransfer");
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memset(&message, 0, sizeof(NGAP_PDUSessionResourceModifyRequestTransfer_t));
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ie = CALLOC(1, sizeof(NGAP_PDUSessionResourceModifyRequestTransferIEs_t));
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_QosFlowAddOrModifyRequestList;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceModifyRequestTransferIEs__value_PR_QosFlowAddOrModifyRequestList;
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QosFlowAddOrModifyRequestList = &ie->value.choice.QosFlowAddOrModifyRequestList;
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ogs_list_for_each_entry(
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&sess->qos_flow_to_modify_list, qos_flow, to_modify_node) {
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QosFlowAddOrModifyRequestItem =
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CALLOC(1, sizeof(*QosFlowAddOrModifyRequestItem));
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ASN_SEQUENCE_ADD(&QosFlowAddOrModifyRequestList->list, QosFlowAddOrModifyRequestItem);
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qosFlowIdentifier = &QosFlowAddOrModifyRequestItem->qosFlowIdentifier;
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QosFlowAddOrModifyRequestItem->qosFlowLevelQosParameters =
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qosFlowLevelQosParameters =
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CALLOC(1, sizeof(*qosFlowLevelQosParameters));
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allocationAndRetentionPriority =
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&qosFlowLevelQosParameters->allocationAndRetentionPriority;
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qosCharacteristics = &qosFlowLevelQosParameters->qosCharacteristics;
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qosCharacteristics->present = NGAP_QosCharacteristics_PR_nonDynamic5QI;
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qosCharacteristics->choice.nonDynamic5QI =
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nonDynamic5QI = CALLOC(1, sizeof(struct NGAP_NonDynamic5QIDescriptor));
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*qosFlowIdentifier = qos_flow->qfi;
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nonDynamic5QI->fiveQI = qos_flow->qos.index;
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allocationAndRetentionPriority->priorityLevelARP =
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qos_flow->qos.arp.priority_level;
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if (qos_flow->qos.arp.pre_emption_capability ==
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OGS_5GC_PRE_EMPTION_ENABLED)
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allocationAndRetentionPriority->pre_emptionCapability =
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NGAP_Pre_emptionCapability_may_trigger_pre_emption;
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if (qos_flow->qos.arp.pre_emption_vulnerability ==
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OGS_5GC_PRE_EMPTION_ENABLED)
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allocationAndRetentionPriority->pre_emptionVulnerability =
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NGAP_Pre_emptionVulnerability_pre_emptable;
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if (qos_presence == true &&
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(qos_flow->qos.mbr.downlink || qos_flow->qos.mbr.uplink ||
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qos_flow->qos.gbr.downlink || qos_flow->qos.gbr.uplink)) {
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ogs_assert(qos_flow->qos.mbr.downlink);
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ogs_assert(qos_flow->qos.mbr.uplink);
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ogs_assert(qos_flow->qos.gbr.downlink);
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ogs_assert(qos_flow->qos.gbr.uplink);
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qosFlowLevelQosParameters->gBR_QosInformation =
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gBR_QosInformation = CALLOC(1, sizeof(*gBR_QosInformation));
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asn_uint642INTEGER(&gBR_QosInformation->maximumFlowBitRateDL,
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qos_flow->qos.mbr.downlink);
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asn_uint642INTEGER(&gBR_QosInformation->maximumFlowBitRateUL,
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qos_flow->qos.mbr.uplink);
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asn_uint642INTEGER(&gBR_QosInformation->
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guaranteedFlowBitRateDL, qos_flow->qos.gbr.downlink);
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asn_uint642INTEGER(&gBR_QosInformation->
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guaranteedFlowBitRateUL, qos_flow->qos.gbr.uplink);
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}
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}
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return ogs_asn_encode(
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&asn_DEF_NGAP_PDUSessionResourceModifyRequestTransfer, &message);
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}
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ogs_pkbuf_t *ngap_build_pdu_session_resource_release_request_transfer(
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smf_sess_t *sess, NGAP_Cause_PR group, long cause)
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{
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NGAP_PDUSessionResourceModifyRequestTransfer_t message;
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NGAP_PDUSessionResourceModifyRequestTransferIEs_t *ie = NULL;
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NGAP_QosFlowListWithCause_t *QosFlowListWithCause = NULL;
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NGAP_QosFlowWithCauseItem_t *QosFlowWithCauseItem = NULL;
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NGAP_QosFlowIdentifier_t *qosFlowIdentifier = NULL;
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NGAP_Cause_t *Cause = NULL;
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smf_bearer_t *qos_flow = NULL;
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ogs_assert(sess);
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ogs_debug("PDUSessionResourceModifyRequestTransfer");
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memset(&message, 0, sizeof(NGAP_PDUSessionResourceModifyRequestTransfer_t));
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ie = CALLOC(1, sizeof(NGAP_PDUSessionResourceModifyRequestTransferIEs_t));
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ASN_SEQUENCE_ADD(&message.protocolIEs, ie);
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ie->id = NGAP_ProtocolIE_ID_id_QosFlowToReleaseList;
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ie->criticality = NGAP_Criticality_reject;
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ie->value.present = NGAP_PDUSessionResourceModifyRequestTransferIEs__value_PR_QosFlowListWithCause;
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QosFlowListWithCause = &ie->value.choice.QosFlowListWithCause;
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ogs_list_for_each_entry(
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&sess->qos_flow_to_modify_list, qos_flow, to_modify_node) {
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QosFlowWithCauseItem = CALLOC(1, sizeof(*QosFlowWithCauseItem));
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ASN_SEQUENCE_ADD(&QosFlowListWithCause->list, QosFlowWithCauseItem);
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qosFlowIdentifier = &QosFlowWithCauseItem->qosFlowIdentifier;
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*qosFlowIdentifier = qos_flow->qfi;
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Cause = &QosFlowWithCauseItem->cause;
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Cause->present = group;
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Cause->choice.radioNetwork = cause;
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}
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return ogs_asn_encode(
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&asn_DEF_NGAP_PDUSessionResourceModifyRequestTransfer, &message);
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}
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ogs_pkbuf_t *ngap_build_pdu_session_resource_release_command_transfer(
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smf_sess_t *sess, int state, NGAP_Cause_PR group, long cause)
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{
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NGAP_PDUSessionResourceReleaseCommandTransfer_t message;
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NGAP_Cause_t *Cause = NULL;
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ogs_assert(sess);
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ogs_assert(state);
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sess->ngap_state.pdu_session_resource_release = state;
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ogs_debug("PDUSessionResourceReleaseCommandTransfer");
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memset(&message, 0,
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sizeof(NGAP_PDUSessionResourceReleaseCommandTransfer_t));
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ogs_debug(" Group[%d] Cause[%d]", group, (int)cause);
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Cause = &message.cause;
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Cause->present = group;
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Cause->choice.radioNetwork = cause;
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return ogs_asn_encode(
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&asn_DEF_NGAP_PDUSessionResourceReleaseCommandTransfer, &message);
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}
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ogs_pkbuf_t *ngap_build_path_switch_request_ack_transfer(smf_sess_t *sess)
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{
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NGAP_PathSwitchRequestAcknowledgeTransfer_t message;
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#if 0 /* The following is optional. So I've removed */
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ogs_ip_t upf_n3_ip;
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NGAP_UPTransportLayerInformation_t *UPTransportLayerInformation = NULL;
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NGAP_GTPTunnel_t *gTPTunnel = NULL;
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#endif
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ogs_assert(sess);
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ogs_debug("PathSwitchRequestAcknowledgeTransfer");
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memset(&message, 0, sizeof(NGAP_PathSwitchRequestAcknowledgeTransfer_t));
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#if 0 /* The following is optional. So I've removed */
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message.uL_NGU_UP_TNLInformation = CALLOC(1, sizeof(NGAP_UPTransportLayerInformation_t));
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UPTransportLayerInformation = message.uL_NGU_UP_TNLInformation;
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gTPTunnel = CALLOC(1, sizeof(struct NGAP_GTPTunnel));
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UPTransportLayerInformation->present =
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NGAP_UPTransportLayerInformation_PR_gTPTunnel;
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UPTransportLayerInformation->choice.gTPTunnel = gTPTunnel;
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ogs_assert(OGS_OK == ogs_sockaddr_to_ip(
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sess->upf_n3_addr, sess->upf_n3_addr6, &upf_n3_ip));
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ogs_asn_ip_to_BIT_STRING(&upf_n3_ip, &gTPTunnel->transportLayerAddress);
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ogs_asn_uint32_to_OCTET_STRING(sess->upf_n3_teid, &gTPTunnel->gTP_TEID);
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#endif
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return ogs_asn_encode(
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&asn_DEF_NGAP_PathSwitchRequestAcknowledgeTransfer, &message);
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}
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ogs_pkbuf_t *ngap_build_handover_command_transfer(smf_sess_t *sess)
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{
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NGAP_HandoverCommandTransfer_t message;
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ogs_ip_t upf_dl_ip;
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ogs_assert(sess);
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ogs_debug("HandoverCommandTransfer");
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memset(&message, 0, sizeof(NGAP_HandoverCommandTransfer_t));
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if (sess->handover.indirect_data_forwarding == true) {
|
|
ogs_pfcp_pdr_t *pdr = NULL;
|
|
|
|
NGAP_UPTransportLayerInformation_t
|
|
*dLForwardingUP_TNLInformation = NULL;
|
|
NGAP_GTPTunnel_t *gTPTunnel = NULL;
|
|
NGAP_QosFlowToBeForwardedList_t *qosFlowToBeForwardedList = NULL;
|
|
|
|
message.dLForwardingUP_TNLInformation = dLForwardingUP_TNLInformation =
|
|
CALLOC(1, sizeof(*dLForwardingUP_TNLInformation));
|
|
ogs_assert(dLForwardingUP_TNLInformation);
|
|
|
|
dLForwardingUP_TNLInformation->present =
|
|
NGAP_UPTransportLayerInformation_PR_gTPTunnel;
|
|
dLForwardingUP_TNLInformation->choice.gTPTunnel = gTPTunnel =
|
|
CALLOC(1, sizeof(*gTPTunnel));
|
|
ogs_assert(gTPTunnel);
|
|
|
|
ogs_assert(OGS_OK == ogs_sockaddr_to_ip(
|
|
sess->handover.upf_dl_addr, sess->handover.upf_dl_addr6,
|
|
&upf_dl_ip));
|
|
ogs_asn_ip_to_BIT_STRING(&upf_dl_ip, &gTPTunnel->transportLayerAddress);
|
|
ogs_asn_uint32_to_OCTET_STRING(
|
|
sess->handover.upf_dl_teid, &gTPTunnel->gTP_TEID);
|
|
|
|
ogs_list_for_each(&sess->pfcp.pdr_list, pdr) {
|
|
ogs_pfcp_far_t *far = pdr->far;
|
|
ogs_assert(far);
|
|
|
|
if (pdr->src_if == OGS_PFCP_INTERFACE_ACCESS &&
|
|
far->dst_if == OGS_PFCP_INTERFACE_ACCESS) {
|
|
NGAP_QosFlowToBeForwardedItem_t *qosFlowToBeForwardedItem;
|
|
NGAP_QosFlowIdentifier_t *qosFlowIdentifier = NULL;
|
|
|
|
if (!qosFlowToBeForwardedList) {
|
|
message.qosFlowToBeForwardedList =
|
|
qosFlowToBeForwardedList =
|
|
CALLOC(1, sizeof(*qosFlowToBeForwardedList));
|
|
ogs_assert(qosFlowToBeForwardedList);
|
|
}
|
|
|
|
qosFlowToBeForwardedItem =
|
|
CALLOC(1, sizeof(*qosFlowToBeForwardedItem));
|
|
ogs_assert(qosFlowToBeForwardedItem);
|
|
|
|
ASN_SEQUENCE_ADD(&qosFlowToBeForwardedList->list,
|
|
qosFlowToBeForwardedItem);
|
|
|
|
qosFlowIdentifier =
|
|
&qosFlowToBeForwardedItem->qosFlowIdentifier;
|
|
|
|
*qosFlowIdentifier = pdr->qfi;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ogs_asn_encode(&asn_DEF_NGAP_HandoverCommandTransfer, &message);
|
|
}
|