Add optional/conditional IEs introduced in Rel-16/17/18 releases

[gab-arrobo]

Also create a minor release

[Copilot]

Pull request overview

This PR expands the NAS library’s support for optional/conditional Information Elements (IEs) introduced across Rel-16/17/18 by adding new nasType IE definitions and wiring them into the relevant nasMessage encode/decode paths. It also bumps the project version for a minor release.

Changes:

• Bump version from 2.1.1-dev to 2.2.0.
• Add multiple new nasType IE structs (both TV and TLV/LV forms).
• Extend encoding/decoding in multiple NAS message types to include the newly supported optional/conditional IEs.

Reviewed changes

Copilot reviewed 53 out of 53 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
VERSION	Minor release version bump to 2.2.0.
nasType/NAS_UpdatedPEIPSAssistanceInformation.go	New TLV IE type for Updated PEIPS assistance information.
nasType/NAS_TNANInformation.go	New TLV IE type for TNAN information.
nasType/NAS_T3448Value.go	New timer-value IE type (octet-based).
nasType/NAS_SNSSAITimeValidityInformation.go	New TLV IE type for S-NSSAI time validity info.
nasType/NAS_SNSSAILocationValidityInformation.go	New TLV IE type for S-NSSAI location validity info.
nasType/NAS_ServingPLMNRateControl.go	New TLV IE type for Serving PLMN rate control.
nasType/NAS_ReleaseAssistanceIndication.go	New type-1 (half-octet) IE for Release Assistance Indication.
nasType/NAS_ReceivedMBSContainer.go	New L16V IE type for Received MBS Container.
nasType/NAS_ReAttemptIndicator.go	New TLV IE type for Re-Attempt Indicator.
nasType/NAS_RANTimingSynchronization.go	New TLV IE type for RAN timing synchronization.
nasType/NAS_PriorityIndicator.go	New type-1 (half-octet) IE for Priority Indicator.
nasType/NAS_PendingNSSAI.go	New TLV IE type for Pending NSSAI.
nasType/NAS_PayloadContainerInformation.go	New type-1 (half-octet) IE for Payload Container Information.
nasType/NAS_PartiallyRejectedNSSAI.go	New TLV IE type for Partially Rejected NSSAI.
nasType/NAS_PartiallyAllowedNSSAI.go	New TLV IE type for Partially Allowed NSSAI.
nasType/NAS_Non3GPPAccessPathSwitchingIndication.go	New TLV IE type for Non-3GPP access path switching indication.
nasType/NAS_N3QAI.go	New L16V IE type for N3QAI.
nasType/NAS_N3IWFIdentifier.go	New TLV IE type for N3IWF Identifier.
nasType/NAS_MasterSessionKey.go	New L16V IE type for Master Session Key.
nasType/NAS_MAPDUSessionInformation.go	New type-1 (half-octet) IE for MA PDU Session Information.
nasType/NAS_LowerBoundTimerValue.go	New timer-value IE type (octet-based).
nasType/NAS_IPHeaderCompressionConfiguration.go	New TLV IE type for IP header compression configuration.
nasType/NAS_FiveGSMNetworkFeatureSupport.go	New TLV IE type for 5GSM network feature support.
nasType/NAS_Fivegsmcongestionreattemptindicator.go	New TLV IE type for 5GSM congestion reattempt indicator.
nasType/NAS_FeatureAuthorizationIndication.go	New TLV IE type for Feature Authorization Indication.
nasType/NAS_EthernetHeaderCompressionConfiguration.go	New TLV IE type for Ethernet header compression configuration.
nasType/NAS_EquivalentSNPNs.go	New TLV IE type for Equivalent SNPNs.
nasType/NAS_DiscontinuousCoverageMaxTimeOffset.go	New TLV IE type for Discontinuous coverage max time offset.
nasType/NAS_ControlPlaneOnlyIndication.go	New type-1 (half-octet) IE for Control Plane Only Indication.
nasType/NAS_CIoTSmallDataContainer.go	New TLV IE type for CIoT small data container.
nasType/NAS_ATSSSContainer.go	New L16V IE type for ATSSS Container.
nasType/NAS_AlternativeNSSAI.go	New TLV IE type for Alternative NSSAI.
nasType/NAS_AdditionalConfigurationIndication.go	New type-1 (half-octet) IE for Additional Configuration Indication.
nasMessage/NAS_ULNASTransport.go	Add support for additional optional IEs in UL NAS Transport encode/decode.
nasMessage/NAS_ServiceReject.go	Add support for additional optional IEs in Service Reject encode/decode.
nasMessage/NAS_ServiceAccept.go	Add support for additional optional IEs in Service Accept encode/decode.
nasMessage/NAS_SecurityModeComplete.go	Add support for Non-IMEISV PEI IE in Security Mode Complete encode/decode.
nasMessage/NAS_SecurityModeCommand.go	Add support for MasterSessionKey IE in Security Mode Command encode/decode.
nasMessage/NAS_RegistrationRequest.go	Add support for Requested T3512 value IE in Registration Request encode/decode.
nasMessage/NAS_RegistrationReject.go	Add support for additional optional IEs in Registration Reject encode/decode.
nasMessage/NAS_RegistrationAccept.go	Add support for many additional optional/conditional IEs in Registration Accept encode/decode.
nasMessage/NAS_PDUSessionReleaseCommand.go	Add support for additional optional IEs in PDU Session Release Command encode/decode.
nasMessage/NAS_PDUSessionModificationReject.go	Add support for additional optional IEs in PDU Session Modification Reject encode/decode.
nasMessage/NAS_PDUSessionModificationCommand.go	Add support for multiple new optional IEs in PDU Session Modification Command encode/decode.
nasMessage/NAS_PDUSessionEstablishmentReject.go	Add support for additional optional IEs in PDU Session Establishment Reject encode/decode.
nasMessage/NAS_PDUSessionEstablishmentAccept.go	Add support for multiple new optional IEs in PDU Session Establishment Accept encode/decode.
nasMessage/NAS_DLNASTransport.go	Add support for LowerBoundTimerValue IE in DL NAS Transport encode/decode.
nasMessage/NAS_DeregistrationRequestUETerminatedDeregistration.go	Add support for additional optional IEs in UE-terminated deregistration request encode/decode.
nasMessage/NAS_DeregistrationRequestUEOriginatingDeregistration.go	Add support for unavailability period and NAS message container IEs in UE-originating deregistration request encode/decode.
nasMessage/NAS_ControlPlaneServiceRequest.go	Add support for several new optional IEs in Control Plane Service Request encode/decode.
nasMessage/NAS_ConfigurationUpdateCommand.go	Add support for additional optional IEs in Configuration Update Command encode/decode.
nasMessage/NAS_AuthenticationResult.go	Add support for MasterSessionKey IE in Authentication Result encode/decode.

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[Copilot]

Pull request overview

Copilot reviewed 58 out of 58 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (3)

nasMessage/NAS_ServiceAccept.go:78

• ServiceAccept now includes additional optional IEs (T3448Value, FiveGSAdditionalRequestResult, ForbiddenTAI*), but NAS_ServiceAccept_test.go still only exercises the original IEs. A round-trip encode/decode test that sets these new fields would improve coverage and catch wire-format issues early.

	if a.T3448Value != nil {
		binary.Write(buffer, binary.BigEndian, a.T3448Value.GetIei())
		binary.Write(buffer, binary.BigEndian, a.T3448Value.GetLen())
		binary.Write(buffer, binary.BigEndian, &a.T3448Value.Octet)
	}
	if a.FiveGSAdditionalRequestResult != nil {
		binary.Write(buffer, binary.BigEndian, a.FiveGSAdditionalRequestResult.GetIei())
		binary.Write(buffer, binary.BigEndian, uint8(a.FiveGSAdditionalRequestResult.GetLen()))
		binary.Write(buffer, binary.BigEndian, a.FiveGSAdditionalRequestResult.Buffer[:uint8(a.FiveGSAdditionalRequestResult.GetLen())])
	}

nasType/NAS_Fivegsmcongestionreattemptindicator.go:12

• The exported type name Fivegsmcongestionreattemptindicator is not in Go UpperCamelCase and is inconsistent with nearby NAS type naming (e.g., FiveGSMNetworkFeatureSupport). This makes the public API harder to read/search and tends to propagate the inconsistent spelling into message structs.
  nasMessage/NAS_ServiceReject.go:73
• New optional/conditional IEs are now encoded/decoded in ServiceReject (e.g., T3448Value, CAGInformationList, DisasterReturnWaitRange, LowerBoundTimerValue, ForbiddenTAI*), but the existing ServiceReject encode/decode test only covers the original set of IEs. Adding a dedicated test case that populates these new fields would help prevent regressions in IEI/length handling.

	if a.T3448Value != nil {
		binary.Write(buffer, binary.BigEndian, a.T3448Value.GetIei())
		binary.Write(buffer, binary.BigEndian, a.T3448Value.GetLen())
		binary.Write(buffer, binary.BigEndian, &a.T3448Value.Octet)
	}