/******************************************************************************* * * Copyright (c) 2019 AT&T Intellectual Property. * * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 * * 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. * *******************************************************************************/ package e2pdus // #cgo CFLAGS: -I../asn1codec/inc/ -I../asn1codec/e2ap_engine/ // #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec // #include import "C" import ( "fmt" "strings" "unsafe" ) const ( MaxAsn1PackedBufferSize = 4096 MaxAsn1CodecMessageBufferSize = 4096 MaxAsn1CodecAllocationBufferSize = 4096 // TODO: remove later ) // Used as default by the x2_reset_request const ( OmInterventionCause = "misc:om-intervention" ) type cause struct { causeGroup uint32 cause int } var knownCauses = map[string]cause{ "misc:control-processing-overload": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_control_processing_overload}, "misc:hardware-failure": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_hardware_failure}, OmInterventionCause: {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_om_intervention}, "misc:not-enough-user-plane-processing-resources": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_not_enough_user_plane_processing_resources}, "misc:unspecified": {causeGroup: C.Cause_PR_misc, cause: C.CauseMisc_unspecified}, "protocol:transfer-syntax-error": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_transfer_syntax_error}, "protocol:abstract-syntax-error-reject": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_reject}, "protocol:abstract-syntax-error-ignore-and-notify": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_ignore_and_notify}, "protocol:message-not-compatible-with-receiver-state": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_message_not_compatible_with_receiver_state}, "protocol:semantic-error": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_semantic_error}, "protocol:unspecified": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_unspecified}, "protocol:abstract-syntax-error-falsely-constructed-message": {causeGroup: C.Cause_PR_protocol, cause: C.CauseProtocol_abstract_syntax_error_falsely_constructed_message}, "transport:transport-resource-unavailable": {causeGroup: C.Cause_PR_transport, cause: C.CauseTransport_transport_resource_unavailable}, "transport:unspecified": {causeGroup: C.Cause_PR_transport, cause: C.CauseTransport_unspecified}, "radioNetwork:handover-desirable-for-radio-reasons": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_handover_desirable_for_radio_reasons}, "radioNetwork:time-critical-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_time_critical_handover}, "radioNetwork:resource-optimisation-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_resource_optimisation_handover}, "radioNetwork:reduce-load-in-serving-cell": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reduce_load_in_serving_cell}, "radioNetwork:partial-handover": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_partial_handover}, "radioNetwork:unknown-new-enb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_new_eNB_UE_X2AP_ID}, "radioNetwork:unknown-old-enb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_old_eNB_UE_X2AP_ID}, "radioNetwork:unknown-pair-of-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_pair_of_UE_X2AP_ID}, "radioNetwork:ho-target-not-allowed": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_ho_target_not_allowed}, "radioNetwork:tx2relocoverall-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tx2relocoverall_expiry}, "radioNetwork:trelocprep-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_trelocprep_expiry}, "radioNetwork:cell-not-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_cell_not_available}, "radioNetwork:no-radio-resources-available-in-target-cell": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_no_radio_resources_available_in_target_cell}, "radioNetwork:invalid-mme-groupid": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_invalid_MME_GroupID}, "radioNetwork:unknown-mme-code": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_MME_Code}, "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}, "radioNetwork:reportcharacteristicsempty": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reportCharacteristicsEmpty}, "radioNetwork:noreportperiodicity": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_noReportPeriodicity}, "radioNetwork:existingMeasurementID": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_existingMeasurementID}, "radioNetwork:unknown-enb-measurement-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_eNB_Measurement_ID}, "radioNetwork:measurement-temporarily-not-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_measurement_temporarily_not_available}, "radioNetwork:unspecified": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unspecified}, "radioNetwork:load-balancing": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_load_balancing}, "radioNetwork:handover-optimisation": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_handover_optimisation}, "radioNetwork:value-out-of-allowed-range": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_value_out_of_allowed_range}, "radioNetwork:multiple-E-RAB-ID-instances": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_multiple_E_RAB_ID_instances}, "radioNetwork:switch-off-ongoing": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_switch_off_ongoing}, "radioNetwork:not-supported-qci-value": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_not_supported_QCI_value}, "radioNetwork:measurement-not-supported-for-the-object": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_measurement_not_supported_for_the_object}, "radioNetwork:tdcoverall-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tDCoverall_expiry}, "radioNetwork:tdcprep-expiry": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_tDCprep_expiry}, "radioNetwork:action-desirable-for-radio-reasons": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_action_desirable_for_radio_reasons}, "radioNetwork:reduce-load": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_reduce_load}, "radioNetwork:resource-optimisation": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_resource_optimisation}, "radioNetwork:time-critical-action": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_time_critical_action}, "radioNetwork:target-not-allowed": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_target_not_allowed}, "radioNetwork:no-radio-resources-available": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_no_radio_resources_available}, "radioNetwork:invalid-qos-combination": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_invalid_QoS_combination}, "radioNetwork:encryption-algorithms-not-aupported": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_encryption_algorithms_not_aupported}, "radioNetwork:procedure-cancelled": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_procedure_cancelled}, "radioNetwork:rrm-purpose": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_rRM_purpose}, "radioNetwork:improve-user-bit-rate": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_improve_user_bit_rate}, "radioNetwork:user-inactivity": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_user_inactivity}, "radioNetwork:radio-connection-with-ue-lost": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_radio_connection_with_UE_lost}, "radioNetwork:failure-in-the-radio-interface-procedure": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_failure_in_the_radio_interface_procedure}, "radioNetwork:bearer-option-not-supported": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_bearer_option_not_supported}, "radioNetwork:mcg-mobility": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_mCG_Mobility}, "radioNetwork:scg-mobility": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_sCG_Mobility}, "radioNetwork:count-reaches-max-value": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_count_reaches_max_value}, "radioNetwork:unknown-old-en-gnb-ue-x2ap-id": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_unknown_old_en_gNB_UE_X2AP_ID}, "radioNetwork:pdcp-Overload": {causeGroup: C.Cause_PR_radioNetwork, cause: C.CauseRadioNetwork_pDCP_Overload}, } var knownCausesToX2ResetPDUs = map[string][]byte{} func prepareX2ResetPDUs(maxAsn1PackedBufferSize int, maxAsn1CodecMessageBufferSize int) error { packedBuffer := make([]C.uchar, maxAsn1PackedBufferSize) errorBuffer := make([]C.char, maxAsn1CodecMessageBufferSize) for k, cause := range knownCauses { var payloadSize = C.ulong(maxAsn1PackedBufferSize) if status := C.build_pack_x2reset_request(cause.causeGroup, C.int(cause.cause), &payloadSize, &packedBuffer[0], C.ulong(maxAsn1CodecMessageBufferSize), &errorBuffer[0]); !status { return fmt.Errorf("#x2_reset_known_causes.prepareX2ResetPDUs - failed to build and pack the reset message %s ", C.GoString(&errorBuffer[0])) } knownCausesToX2ResetPDUs[strings.ToLower(k)] = C.GoBytes(unsafe.Pointer(&packedBuffer[0]), C.int(payloadSize)) } return nil } // KnownCausesToX2ResetPDU returns a packed x2 reset pdu with the specified cause (case insensitive match). func KnownCausesToX2ResetPDU(cause string) ([]byte, bool) { v, ok := knownCausesToX2ResetPDUs[strings.ToLower(cause)] return v, ok } func init() { if err := prepareX2ResetPDUs(MaxAsn1PackedBufferSize, MaxAsn1CodecMessageBufferSize); err != nil { panic(err) } }