139     Error Enable(void);
146     Error Disable(void);
154     Error Start(void) { return Start(kNormalAttach); }  in Start()
172     Error Store(void);
187     Error BecomeDetached(void);
196     Error BecomeChild(void);
209     Error DetachGracefully(DetachCallback aCallback, void *aContext);
301     Error SetDeviceMode(DeviceMode aDeviceMode);
356     Error SetMeshLocalIid(const Ip6::InterfaceIdentifier &aMlIid);
421     Error GetParentInfo(Router::Info &aParentInfo) const;
437     Error SearchForBetterParent(void);
656     Error SendChildUpdateRequestToParent(void);
749     Error Wakeup(const Mac::ExtAddress &aWedAddress,
985         Error AppendSourceAddressTlv(void);
986         Error AppendModeTlv(DeviceMode aMode);
987         Error AppendTimeoutTlv(uint32_t aTimeout);
988         Error AppendChallengeTlv(const TxChallenge &aChallenge);
989         Error AppendResponseTlv(const RxChallenge &aResponse);
990         Error AppendLinkFrameCounterTlv(void);
991         Error AppendMleFrameCounterTlv(void);
992         Error AppendLinkAndMleFrameCounterTlvs(void);
993         Error AppendAddress16Tlv(uint16_t aRloc16);
994         Error AppendNetworkDataTlv(NetworkData::Type aType);
995         Error AppendTlvRequestTlv(const uint8_t *aTlvs, uint8_t aTlvsLength);
996         Error AppendLeaderDataTlv(void);
997         Error AppendScanMaskTlv(uint8_t aScanMask);
998         Error AppendStatusTlv(StatusTlv::Status aStatus);
999         Error AppendLinkMarginTlv(uint8_t aLinkMargin);
1000         Error AppendVersionTlv(void);
1001         Error AppendAddressRegistrationTlv(AddressRegistrationMode aMode = kAppendAllAddresses);
1002         Error AppendSupervisionIntervalTlvIfSleepyChild(void);
1003         Error AppendSupervisionIntervalTlv(uint16_t aInterval);
1004         Error AppendXtalAccuracyTlv(void);
1005         Error AppendActiveTimestampTlv(void);
1006         Error AppendPendingTimestampTlv(void);
1007         Error AppendActiveAndPendingTimestampTlvs(void);
1009         Error AppendTimeRequestTlv(void);
1010         Error AppendTimeParameterTlv(void);
1013         Error AppendCslChannelTlv(void);
1014         Error AppendCslTimeoutTlv(void);
1017         Error AppendCslClockAccuracyTlv(void);
1020         Error AppendRouteTlv(Neighbor *aNeighbor = nullptr);
1021         Error AppendActiveDatasetTlv(void);
1022         Error AppendPendingDatasetTlv(void);
1023         Error AppendConnectivityTlv(void);
1024         Error AppendSteeringDataTlv(void);
1025         Error AppendAddressRegistrationTlv(Child &aChild);
1027 …template <uint8_t kArrayLength> Error AppendTlvRequestTlv(const uint8_t (&aTlvArray)[kArrayLength])  in AppendTlvRequestTlv()
1032         Error SendTo(const Ip6::Address &aDestination);
1035         Error AppendCompressedAddressEntry(uint8_t aContextId, const Ip6::Address &aAddress);
1036         Error AppendAddressEntry(const Ip6::Address &aAddress);
1037         Error AppendDatasetTlv(MeshCoP::Dataset::Type aDatasetType);
1046         Error ReadModeTlv(DeviceMode &aMode) const;
1047         Error ReadVersionTlv(uint16_t &aVersion) const;
1048         Error ReadChallengeTlv(RxChallenge &aChallenge) const;
1049         Error ReadResponseTlv(RxChallenge &aResponse) const;
1050         Error ReadAndMatchResponseTlvWith(const TxChallenge &aChallenge) const;
1051         Error ReadFrameCounterTlvs(uint32_t &aLinkFrameCounter, uint32_t &aMleFrameCounter) const;
1052         Error ReadTlvRequestTlv(TlvList &aTlvList) const;
1053         Error ReadLeaderDataTlv(LeaderData &aLeaderData) const;
1054         Error ReadAndSetNetworkDataTlv(const LeaderData &aLeaderData) const;
1055         Error ReadAndSaveActiveDataset(const MeshCoP::Timestamp &aActiveTimestamp) const;
1056         Error ReadAndSavePendingDataset(const MeshCoP::Timestamp &aPendingTimestamp) const;
1058         Error ReadCslClockAccuracyTlv(Mac::CslAccuracy &aCslAccuracy) const;
1061         Error ReadRouteTlv(RouteTlv &aRouteTlv) const;
1065         Error ReadChallengeOrResponse(uint8_t aTlvType, RxChallenge &aRxChallenge) const;
1066 …Error ReadAndSaveDataset(MeshCoP::Dataset::Type aDatasetType, const MeshCoP::Timestamp &aTimestamp…
1290         Error SelectBetterParent(void);
1312     Error      Start(StartMode aMode);
1320     Error      SendDataRequest(const Ip6::Address &aDestination);
1324     Error      SendChildUpdateRequestToParent(ChildUpdateRequestMode aMode);
1325     Error      SendChildUpdateResponse(const TlvList      &aTlvList,
1348     Error      HandleLeaderData(RxInfo &aRxInfo);
1353     Error      SendChildIdRequest(void);
1354     Error      GetNextAnnounceChannel(uint8_t &aChannel) const;
1361     Error      DetermineParentRequestType(ParentRequestType &aType) const;
1368     Error      ProcessMessageSecurity(Crypto::AesCcm::Mode    aMode,
1398 …Error SendLinkMetricsManagementResponse(const Ip6::Address &aDestination, LinkMetrics::Status aSta…
1403     Error SendDataRequestForLinkMetricsReport(const Ip6::Address                      &aDestination,
1405 …  Error SendLinkMetricsManagementRequest(const Ip6::Address &aDestination, const ot::Tlv &aSubTlv);
1406 …Error SendLinkProbe(const Ip6::Address &aDestination, uint8_t aSeriesId, uint8_t *aBuf, uint8_t aL…
1407     Error SendDataRequest(const Ip6::Address                      &aDestination,
1412 …Error       SendDataRequest(const Ip6::Address &aDestination, const uint8_t *aTlvs, uint8_t aTlvsL…
1434     static void        LogError(MessageAction aAction, MessageType aType, Error aError);
1438     static void        LogProcessError(MessageType aType, Error aError);
1439     static void        LogSendError(MessageType aType, Error aError);
1441     static void LogProcessError(MessageType, Error) {}  in LogProcessError()  argument
1442     static void LogSendError(MessageType, Error) {}  in LogSendError()  argument