148 lines
13 KiB
Go
148 lines
13 KiB
Go
/*
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* Copyright (c) 2019 AT&T Intellectual Property.
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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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*/
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/*
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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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*/
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package e2pdus
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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 <x2reset_request_wrapper.h>
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import "C"
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import (
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"fmt"
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"strings"
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"unsafe"
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)
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const (
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MaxAsn1PackedBufferSize = 4096
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MaxAsn1CodecMessageBufferSize = 4096
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MaxAsn1CodecAllocationBufferSize = 4096 // TODO: remove later
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)
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// Used as default by the x2_reset_request
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const (
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OmInterventionCause = "misc:om-intervention"
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)
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type cause struct {
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causeGroup uint32
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cause int
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}
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var knownCauses = map[string]cause{
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"misc:control-processing-overload": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_control_processing_overload},
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"misc:hardware-failure": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_hardware_failure},
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OmInterventionCause: {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_om_intervention},
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"misc:not-enough-user-plane-processing-resources": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_not_enough_user_plane_processing_resources},
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"misc:unspecified": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_unspecified},
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"protocol:transfer-syntax-error": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_transfer_syntax_error},
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"protocol:abstract-syntax-error-reject": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_reject},
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"protocol:abstract-syntax-error-ignore-and-notify": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_ignore_and_notify},
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"protocol:message-not-compatible-with-receiver-state": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_message_not_compatible_with_receiver_state},
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"protocol:semantic-error": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_semantic_error},
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"protocol:unspecified": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_unspecified},
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"protocol:abstract-syntax-error-falsely-constructed-message": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_falsely_constructed_message},
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"transport:transport-resource-unavailable": {causeGroup: C.Cause_PR_transport, cause: C.CauseTransport_transport_resource_unavailable},
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"transport:unspecified": {causeGroup: C.Cause_PR_transport, cause: C.CauseTransport_unspecified},
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"radioNetwork:handover-desirable-for-radio-reasons": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_handover_desirable_for_radio_reasons},
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"radioNetwork:time-critical-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_time_critical_handover},
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"radioNetwork:resource-optimisation-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_resource_optimisation_handover},
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"radioNetwork:reduce-load-in-serving-cell": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reduce_load_in_serving_cell},
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"radioNetwork:partial-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_partial_handover},
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"radioNetwork:unknown-new-enb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_new_eNB_UE_X2AP_ID},
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"radioNetwork:unknown-old-enb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_old_eNB_UE_X2AP_ID},
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"radioNetwork:unknown-pair-of-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_pair_of_UE_X2AP_ID},
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"radioNetwork:ho-target-not-allowed": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_ho_target_not_allowed},
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"radioNetwork:tx2relocoverall-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tx2relocoverall_expiry},
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"radioNetwork:trelocprep-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_trelocprep_expiry},
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"radioNetwork:cell-not-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_cell_not_available},
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"radioNetwork:no-radio-resources-available-in-target-cell": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_no_radio_resources_available_in_target_cell},
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"radioNetwork:invalid-mme-groupid": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_invalid_MME_GroupID},
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"radioNetwork:unknown-mme-code": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_MME_Code},
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"radioNetwork:encryption-and-or-integrity-protection-algorithms-not-supported": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_encryption_and_or_integrity_protection_algorithms_not_supported},
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"radioNetwork:reportcharacteristicsempty": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reportCharacteristicsEmpty},
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"radioNetwork:noreportperiodicity": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_noReportPeriodicity},
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"radioNetwork:existingMeasurementID": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_existingMeasurementID},
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"radioNetwork:unknown-enb-measurement-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_eNB_Measurement_ID},
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"radioNetwork:measurement-temporarily-not-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_measurement_temporarily_not_available},
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"radioNetwork:unspecified": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unspecified},
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"radioNetwork:load-balancing": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_load_balancing},
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"radioNetwork:handover-optimisation": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_handover_optimisation},
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"radioNetwork:value-out-of-allowed-range": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_value_out_of_allowed_range},
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"radioNetwork:multiple-E-RAB-ID-instances": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_multiple_E_RAB_ID_instances},
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"radioNetwork:switch-off-ongoing": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_switch_off_ongoing},
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"radioNetwork:not-supported-qci-value": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_not_supported_QCI_value},
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"radioNetwork:measurement-not-supported-for-the-object": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_measurement_not_supported_for_the_object},
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"radioNetwork:tdcoverall-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tDCoverall_expiry},
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"radioNetwork:tdcprep-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tDCprep_expiry},
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"radioNetwork:action-desirable-for-radio-reasons": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_action_desirable_for_radio_reasons},
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"radioNetwork:reduce-load": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reduce_load},
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"radioNetwork:resource-optimisation": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_resource_optimisation},
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"radioNetwork:time-critical-action": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_time_critical_action},
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"radioNetwork:target-not-allowed": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_target_not_allowed},
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"radioNetwork:no-radio-resources-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_no_radio_resources_available},
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"radioNetwork:invalid-qos-combination": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_invalid_QoS_combination},
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"radioNetwork:encryption-algorithms-not-aupported": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_encryption_algorithms_not_aupported},
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"radioNetwork:procedure-cancelled": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_procedure_cancelled},
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"radioNetwork:rrm-purpose": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_rRM_purpose},
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"radioNetwork:improve-user-bit-rate": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_improve_user_bit_rate},
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"radioNetwork:user-inactivity": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_user_inactivity},
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"radioNetwork:radio-connection-with-ue-lost": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_radio_connection_with_UE_lost},
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"radioNetwork:failure-in-the-radio-interface-procedure": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_failure_in_the_radio_interface_procedure},
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"radioNetwork:bearer-option-not-supported": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_bearer_option_not_supported},
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"radioNetwork:mcg-mobility": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_mCG_Mobility},
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"radioNetwork:scg-mobility": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_sCG_Mobility},
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"radioNetwork:count-reaches-max-value": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_count_reaches_max_value},
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"radioNetwork:unknown-old-en-gnb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_old_en_gNB_UE_X2AP_ID},
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"radioNetwork:pdcp-Overload": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_pDCP_Overload},
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}
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var knownCausesToX2ResetPDUs = map[string][]byte{}
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func prepareX2ResetPDUs(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int) error {
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packedBuffer := make([]C.uchar, maxAsn1PackedBufferSize)
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errorBuffer := make([]C.char, maxAsn1CodecMessageBufferSize)
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for k, cause := range knownCauses {
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var payloadSize = C.ulong(maxAsn1PackedBufferSize)
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if status := C.build_pack_x2reset_request(cause.causeGroup, C.int(cause.cause), &payloadSize, &packedBuffer[0], C.ulong(maxAsn1CodecMessageBufferSize), &errorBuffer[0]); !status {
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return fmt.Errorf("#x2_reset_known_causes.prepareX2ResetPDUs - failed to build and pack the reset message %s ", C.GoString(&errorBuffer[0]))
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}
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knownCausesToX2ResetPDUs[strings.ToLower(k)] = C.GoBytes(unsafe.Pointer(&packedBuffer[0]), C.int(payloadSize))
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}
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return nil
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}
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// KnownCausesToX2ResetPDU returns a packed x2 reset pdu with the specified cause (case insensitive match).
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func KnownCausesToX2ResetPDU(cause string) ([]byte, bool) {
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v, ok := knownCausesToX2ResetPDUs[strings.ToLower(cause)]
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return v, ok
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}
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func init() {
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if err := prepareX2ResetPDUs(MaxAsn1PackedBufferSize, MaxAsn1CodecMessageBufferSize); err != nil {
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panic(err)
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}
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}
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