src/core/thread/network_data_leader_ftd.hpp - third_party/openthread - Git at Google

 /*
  *  Copyright (c) 2016, The OpenThread Authors.
  *  All rights reserved.
  *
  *  Redistribution and use in source and binary forms, with or without
  *  modification, are permitted provided that the following conditions are met:
  *  1. Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *  3. Neither the name of the copyright holder nor the
  *     names of its contributors may be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *  POSSIBILITY OF SUCH DAMAGE.
  */

 /**
  * @file
  *   This file includes definitions for manipulating Thread Network Data managed by the Thread Leader.
  */

 #ifndef NETWORK_DATA_LEADER_FTD_HPP_
 #define NETWORK_DATA_LEADER_FTD_HPP_

 #include "openthread-core-config.h"

 #if OPENTHREAD_FTD

 #include <stdint.h>

 #include "common/non_copyable.hpp"
 #include "common/numeric_limits.hpp"
 #include "common/timer.hpp"
 #include "net/ip6_address.hpp"
 #include "thread/mle_router.hpp"
 #include "thread/network_data.hpp"
 #include "thread/tmf.hpp"

 namespace ot {

 namespace NetworkData {

 class Notifier;

 /**
  * @addtogroup core-netdata-leader
  *
  * @brief
  *   This module includes definitions for manipulating Thread Network Data managed by the Thread Leader.
  *
  * @{
  *
  */

 /**
  * Implements the Thread Network Data maintained by the Leader.
  *
  */
 class Leader : public LeaderBase, private NonCopyable
 {
     friend class Tmf::Agent;
     friend class Notifier;

 public:
     /**
      * Defines the match mode constants to compare two RLOC16 values.
      *
      */
     enum MatchMode : uint8_t
     {
         kMatchModeRloc16,   ///< Perform exact RLOC16 match.
         kMatchModeRouterId, ///< Perform Router ID match (match the router and any of its children).
     };

     /**
      * Initializes the object.
      *
      * @param[in]  aInstance     A reference to the OpenThread instance.
      *
      */
     explicit Leader(Instance &aInstance);

     /**
      * Reset the Thread Network Data.
      *
      */
     void Reset(void);

     /**
      * Starts the Leader services.
      *
      * The start mode indicates whether device is starting normally as leader or restoring its role as leader after
      * reset. In the latter case, we do not accept any new registrations (`HandleServerData()`) and wait for
      * `HandleNetworkDataRestoredAfterReset()` to indicate that the leader has successfully recovered the Network Data
      * before allowing new Network Data registrations.
      *
      * @param[in] aStartMode   The start mode.
      *
      */
     void Start(Mle::LeaderStartMode aStartMode);

     /**
      * Increments the Thread Network Data version.
      *
      */
     void IncrementVersion(void);

     /**
      * Increments both the Thread Network Data version and stable version.
      *
      */
     void IncrementVersionAndStableVersion(void);

     /**
      * Returns CONTEXT_ID_RESUSE_DELAY value.
      *
      * @returns The CONTEXT_ID_REUSE_DELAY value (in seconds).
      *
      */
     uint32_t GetContextIdReuseDelay(void) const { return mContextIds.GetReuseDelay(); }

     /**
      * Sets CONTEXT_ID_RESUSE_DELAY value.
      *
      * @warning This method should only be used for testing.
      *
      * @param[in]  aDelay  The CONTEXT_ID_REUSE_DELAY value (in seconds).
      *
      */
     void SetContextIdReuseDelay(uint32_t aDelay) { mContextIds.SetReuseDelay(aDelay); }

     /**
      * Removes Network Data entries matching with a given RLOC16.
      *
      * @param[in]  aRloc16    A RLOC16 value.
      * @param[in]  aMatchMode A match mode (@sa MatchMode).
      *
      */
     void RemoveBorderRouter(uint16_t aRloc16, MatchMode aMatchMode);

     /**
      * Synchronizes internal 6LoWPAN Context ID Set with recently obtained Thread Network Data.
      *
      * Note that this method should be called only by the Leader once after reset.
      *
      */
     void HandleNetworkDataRestoredAfterReset(void);

     /**
      * Scans network data for given Service ID and returns pointer to the respective TLV, if present.
      *
      * @param aServiceId Service ID to look for.
      * @return Pointer to the Service TLV for given Service ID, or nullptr if not present.
      *
      */
     const ServiceTlv *FindServiceById(uint8_t aServiceId) const;

 #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
     /**
      * Indicates whether a given Prefix can act as a valid OMR prefix and exists in the network data.
      *
      * @param[in]  aPrefix   The OMR prefix to check.
      *
      * @retval TRUE  If @p aPrefix is a valid OMR prefix and Network Data contains @p aPrefix.
      * @retval FALSE Otherwise.
      *
      */
     bool ContainsOmrPrefix(const Ip6::Prefix &aPrefix);
 #endif

 private:
     static constexpr uint32_t kMaxNetDataSyncWait = 60 * 1000; // Maximum time to wait for netdata sync in msec.

     static constexpr uint8_t kMinServiceId = 0x00;
     static constexpr uint8_t kMaxServiceId = 0x0f;

     class ChangedFlags
     {
     public:
         ChangedFlags(void)
             : mChanged(false)
             , mStableChanged(false)
         {
         }

         void Update(const NetworkDataTlv &aTlv)
         {
             mChanged       = true;
             mStableChanged = (mStableChanged || aTlv.IsStable());
         }

         bool DidChange(void) const { return mChanged; }
         bool DidStableChange(void) const { return mStableChanged; }

     private:
         bool mChanged;       // Any (stable or not) network data change (add/remove).
         bool mStableChanged; // Stable network data change (add/remove).
     };

     enum UpdateStatus : uint8_t
     {
         kTlvRemoved, // TLV contained no sub TLVs and therefore is removed.
         kTlvUpdated, // TLV stable flag is updated based on its sub TLVs.
     };

     class ContextIds : public InstanceLocator
     {
     public:
         // This class tracks Context IDs. A Context ID can be in one
         // of the 3 states: It is unallocated, or it is allocated
         // and in-use, or it scheduled to be removed (after reuse delay
         // interval is passed).

         static constexpr uint8_t kInvalidId = NumericLimits<uint8_t>::kMax;

         explicit ContextIds(Instance &aInstance);

         void     Clear(void);
         Error    GetUnallocatedId(uint8_t &aId);
         void     MarkAsInUse(uint8_t aId) { mRemoveTimes[aId - kMinId].SetValue(kInUse); }
         void     ScheduleToRemove(uint8_t aId);
         uint32_t GetReuseDelay(void) const { return mReuseDelay; }
         void     SetReuseDelay(uint32_t aDelay) { mReuseDelay = aDelay; }
         void     HandleTimer(void);
 #if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
         void MarkAsClone(void) { mIsClone = true; }
 #endif

     private:
         static constexpr uint32_t kReuseDelay = 5 * 60; // 5 minutes (in seconds).

         static constexpr uint8_t kMinId = 1;
         static constexpr uint8_t kMaxId = 15;

         // The `mRemoveTimes[id]` is used to track the state of a
         // Context ID and its remove time. Two specific values
         // `kUnallocated` and `kInUse` are used to indicate ID is in
         // unallocated or in-use states. Other values indicate we
         // are in remove state waiting to remove it at `mRemoveTime`.

         static constexpr uint32_t kUnallocated = 0;
         static constexpr uint32_t kInUse       = 1;

         bool      IsUnallocated(uint8_t aId) const { return mRemoveTimes[aId - kMinId].GetValue() == kUnallocated; }
         bool      IsInUse(uint8_t aId) const { return mRemoveTimes[aId - kMinId].GetValue() == kInUse; }
         TimeMilli GetRemoveTime(uint8_t aId) const { return mRemoveTimes[aId - kMinId]; }
         void      SetRemoveTime(uint8_t aId, TimeMilli aTime);
         void      MarkAsUnallocated(uint8_t aId) { mRemoveTimes[aId - kMinId].SetValue(kUnallocated); }

         TimeMilli mRemoveTimes[kMaxId - kMinId + 1];
         uint32_t  mReuseDelay;
 #if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
         bool mIsClone;
 #endif
     };

     template <Uri kUri> void HandleTmf(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

     void HandleTimer(void);

     void RegisterNetworkData(uint16_t aRloc16, const NetworkData &aNetworkData);

     Error AddPrefix(const PrefixTlv &aPrefix, ChangedFlags &aChangedFlags);
     Error AddHasRoute(const HasRouteTlv &aHasRoute, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
     Error AddBorderRouter(const BorderRouterTlv &aBorderRouter, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
     Error AddService(const ServiceTlv &aService, ChangedFlags &aChangedFlags);
     Error AddServer(const ServerTlv &aServer, ServiceTlv &aDstService, ChangedFlags &aChangedFlags);

     Error AllocateServiceId(uint8_t &aServiceId) const;

     void RemoveContext(uint8_t aContextId);
     void RemoveContext(PrefixTlv &aPrefix, uint8_t aContextId);

     void RemoveCommissioningData(void);

     void RemoveRloc(uint16_t aRloc16, MatchMode aMatchMode, ChangedFlags &aChangedFlags);
     void RemoveRloc(uint16_t           aRloc16,
                     MatchMode          aMatchMode,
                     const NetworkData &aExcludeNetworkData,
                     ChangedFlags      &aChangedFlags);
     void RemoveRlocInPrefix(PrefixTlv       &aPrefix,
                             uint16_t         aRloc16,
                             MatchMode        aMatchMode,
                             const PrefixTlv *aExcludePrefix,
                             ChangedFlags    &aChangedFlags);
     void RemoveRlocInService(ServiceTlv       &aService,
                              uint16_t          aRloc16,
                              MatchMode         aMatchMode,
                              const ServiceTlv *aExcludeService,
                              ChangedFlags     &aChangedFlags);
     void RemoveRlocInHasRoute(PrefixTlv       &aPrefix,
                               HasRouteTlv     &aHasRoute,
                               uint16_t         aRloc16,
                               MatchMode        aMatchMode,
                               const PrefixTlv *aExcludePrefix,
                               ChangedFlags    &aChangedFlags);
     void RemoveRlocInBorderRouter(PrefixTlv       &aPrefix,
                                   BorderRouterTlv &aBorderRouter,
                                   uint16_t         aRloc16,
                                   MatchMode        aMatchMode,
                                   const PrefixTlv *aExcludePrefix,
                                   ChangedFlags    &aChangedFlags);

     static bool RlocMatch(uint16_t aFirstRloc16, uint16_t aSecondRloc16, MatchMode aMatchMode);

     static Error Validate(const NetworkData &aNetworkData, uint16_t aRloc16);
     static Error ValidatePrefix(const PrefixTlv &aPrefix, uint16_t aRloc16);
     static Error ValidateService(const ServiceTlv &aService, uint16_t aRloc16);

     static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const HasRouteEntry &aEntry);
     static bool ContainsMatchingEntry(const HasRouteTlv *aHasRoute, const HasRouteEntry &aEntry);
     static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const BorderRouterEntry &aEntry);
     static bool ContainsMatchingEntry(const BorderRouterTlv *aBorderRouter, const BorderRouterEntry &aEntry);
     static bool ContainsMatchingServer(const ServiceTlv *aService, const ServerTlv &aServer);

     UpdateStatus UpdatePrefix(PrefixTlv &aPrefix);
     UpdateStatus UpdateService(ServiceTlv &aService);
     UpdateStatus UpdateTlv(NetworkDataTlv &aTlv, const NetworkDataTlv *aSubTlvs);

     void SendCommissioningGetResponse(const Coap::Message    &aRequest,
                                       uint16_t                aLength,
                                       const Ip6::MessageInfo &aMessageInfo);
     void SendCommissioningSetResponse(const Coap::Message     &aRequest,
                                       const Ip6::MessageInfo  &aMessageInfo,
                                       MeshCoP::StateTlv::State aState);
     void IncrementVersions(bool aIncludeStable);
     void IncrementVersions(const ChangedFlags &aFlags);

 #if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
     void CheckForNetDataGettingFull(const NetworkData &aNetworkData, uint16_t aOldRloc16);
     void MarkAsClone(void);
 #endif

     using UpdateTimer = TimerMilliIn<Leader, &Leader::HandleTimer>;

 #if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
     bool mIsClone;
 #endif
     bool        mWaitingForNetDataSync;
     ContextIds  mContextIds;
     UpdateTimer mTimer;
 };

 DeclareTmfHandler(Leader, kUriServerData);
 DeclareTmfHandler(Leader, kUriCommissionerGet);
 DeclareTmfHandler(Leader, kUriCommissionerSet);

 /**
  * @}
  */

 } // namespace NetworkData
 } // namespace ot

 #endif // OPENTHREAD_FTD

 #endif // NETWORK_DATA_LEADER_FTD_HPP_
	/*
	* Copyright (c) 2016, The OpenThread Authors.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the name of the copyright holder nor the
	* names of its contributors may be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	/**
	* @file
	* This file includes definitions for manipulating Thread Network Data managed by the Thread Leader.
	*/

	#ifndef NETWORK_DATA_LEADER_FTD_HPP_
	#define NETWORK_DATA_LEADER_FTD_HPP_

	#include "openthread-core-config.h"

	#if OPENTHREAD_FTD

	#include <stdint.h>

	#include "common/non_copyable.hpp"
	#include "common/numeric_limits.hpp"
	#include "common/timer.hpp"
	#include "net/ip6_address.hpp"
	#include "thread/mle_router.hpp"
	#include "thread/network_data.hpp"
	#include "thread/tmf.hpp"

	namespace ot {

	namespace NetworkData {

	class Notifier;

	/**
	* @addtogroup core-netdata-leader
	*
	* @brief
	* This module includes definitions for manipulating Thread Network Data managed by the Thread Leader.
	*
	* @{
	*
	*/

	/**
	* Implements the Thread Network Data maintained by the Leader.
	*
	*/
	class Leader : public LeaderBase, private NonCopyable
	{
	friend class Tmf::Agent;
	friend class Notifier;

	public:
	/**
	* Defines the match mode constants to compare two RLOC16 values.
	*
	*/
	enum MatchMode : uint8_t
	{
	kMatchModeRloc16, ///< Perform exact RLOC16 match.
	kMatchModeRouterId, ///< Perform Router ID match (match the router and any of its children).
	};

	/**
	* Initializes the object.
	*
	* @param[in] aInstance A reference to the OpenThread instance.
	*
	*/
	explicit Leader(Instance &aInstance);

	/**
	* Reset the Thread Network Data.
	*
	*/
	void Reset(void);

	/**
	* Starts the Leader services.
	*
	* The start mode indicates whether device is starting normally as leader or restoring its role as leader after
	* reset. In the latter case, we do not accept any new registrations (`HandleServerData()`) and wait for
	* `HandleNetworkDataRestoredAfterReset()` to indicate that the leader has successfully recovered the Network Data
	* before allowing new Network Data registrations.
	*
	* @param[in] aStartMode The start mode.
	*
	*/
	void Start(Mle::LeaderStartMode aStartMode);

	/**
	* Increments the Thread Network Data version.
	*
	*/
	void IncrementVersion(void);

	/**
	* Increments both the Thread Network Data version and stable version.
	*
	*/
	void IncrementVersionAndStableVersion(void);

	/**
	* Returns CONTEXT_ID_RESUSE_DELAY value.
	*
	* @returns The CONTEXT_ID_REUSE_DELAY value (in seconds).
	*
	*/
	uint32_t GetContextIdReuseDelay(void) const { return mContextIds.GetReuseDelay(); }

	/**
	* Sets CONTEXT_ID_RESUSE_DELAY value.
	*
	* @warning This method should only be used for testing.
	*
	* @param[in] aDelay The CONTEXT_ID_REUSE_DELAY value (in seconds).
	*
	*/
	void SetContextIdReuseDelay(uint32_t aDelay) { mContextIds.SetReuseDelay(aDelay); }

	/**
	* Removes Network Data entries matching with a given RLOC16.
	*
	* @param[in] aRloc16 A RLOC16 value.
	* @param[in] aMatchMode A match mode (@sa MatchMode).
	*
	*/
	void RemoveBorderRouter(uint16_t aRloc16, MatchMode aMatchMode);

	/**
	* Synchronizes internal 6LoWPAN Context ID Set with recently obtained Thread Network Data.
	*
	* Note that this method should be called only by the Leader once after reset.
	*
	*/
	void HandleNetworkDataRestoredAfterReset(void);

	/**
	* Scans network data for given Service ID and returns pointer to the respective TLV, if present.
	*
	* @param aServiceId Service ID to look for.
	* @return Pointer to the Service TLV for given Service ID, or nullptr if not present.
	*
	*/
	const ServiceTlv *FindServiceById(uint8_t aServiceId) const;

	#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
	/**
	* Indicates whether a given Prefix can act as a valid OMR prefix and exists in the network data.
	*
	* @param[in] aPrefix The OMR prefix to check.
	*
	* @retval TRUE If @p aPrefix is a valid OMR prefix and Network Data contains @p aPrefix.
	* @retval FALSE Otherwise.
	*
	*/
	bool ContainsOmrPrefix(const Ip6::Prefix &aPrefix);
	#endif

	private:
	static constexpr uint32_t kMaxNetDataSyncWait = 60 * 1000; // Maximum time to wait for netdata sync in msec.

	static constexpr uint8_t kMinServiceId = 0x00;
	static constexpr uint8_t kMaxServiceId = 0x0f;

	class ChangedFlags
	{
	public:
	ChangedFlags(void)
	: mChanged(false)
	, mStableChanged(false)
	{
	}

	void Update(const NetworkDataTlv &aTlv)
	{
	mChanged = true;
	mStableChanged = (mStableChanged \|\| aTlv.IsStable());
	}

	bool DidChange(void) const { return mChanged; }
	bool DidStableChange(void) const { return mStableChanged; }

	private:
	bool mChanged; // Any (stable or not) network data change (add/remove).
	bool mStableChanged; // Stable network data change (add/remove).
	};

	enum UpdateStatus : uint8_t
	{
	kTlvRemoved, // TLV contained no sub TLVs and therefore is removed.
	kTlvUpdated, // TLV stable flag is updated based on its sub TLVs.
	};

	class ContextIds : public InstanceLocator
	{
	public:
	// This class tracks Context IDs. A Context ID can be in one
	// of the 3 states: It is unallocated, or it is allocated
	// and in-use, or it scheduled to be removed (after reuse delay
	// interval is passed).

	static constexpr uint8_t kInvalidId = NumericLimits<uint8_t>::kMax;

	explicit ContextIds(Instance &aInstance);

	void Clear(void);
	Error GetUnallocatedId(uint8_t &aId);
	void MarkAsInUse(uint8_t aId) { mRemoveTimes[aId - kMinId].SetValue(kInUse); }
	void ScheduleToRemove(uint8_t aId);
	uint32_t GetReuseDelay(void) const { return mReuseDelay; }
	void SetReuseDelay(uint32_t aDelay) { mReuseDelay = aDelay; }
	void HandleTimer(void);
	#if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
	void MarkAsClone(void) { mIsClone = true; }
	#endif

	private:
	static constexpr uint32_t kReuseDelay = 5 * 60; // 5 minutes (in seconds).

	static constexpr uint8_t kMinId = 1;
	static constexpr uint8_t kMaxId = 15;

	// The `mRemoveTimes[id]` is used to track the state of a
	// Context ID and its remove time. Two specific values
	// `kUnallocated` and `kInUse` are used to indicate ID is in
	// unallocated or in-use states. Other values indicate we
	// are in remove state waiting to remove it at `mRemoveTime`.

	static constexpr uint32_t kUnallocated = 0;
	static constexpr uint32_t kInUse = 1;

	bool IsUnallocated(uint8_t aId) const { return mRemoveTimes[aId - kMinId].GetValue() == kUnallocated; }
	bool IsInUse(uint8_t aId) const { return mRemoveTimes[aId - kMinId].GetValue() == kInUse; }
	TimeMilli GetRemoveTime(uint8_t aId) const { return mRemoveTimes[aId - kMinId]; }
	void SetRemoveTime(uint8_t aId, TimeMilli aTime);
	void MarkAsUnallocated(uint8_t aId) { mRemoveTimes[aId - kMinId].SetValue(kUnallocated); }

	TimeMilli mRemoveTimes[kMaxId - kMinId + 1];
	uint32_t mReuseDelay;
	#if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
	bool mIsClone;
	#endif
	};

	template <Uri kUri> void HandleTmf(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

	void HandleTimer(void);

	void RegisterNetworkData(uint16_t aRloc16, const NetworkData &aNetworkData);

	Error AddPrefix(const PrefixTlv &aPrefix, ChangedFlags &aChangedFlags);
	Error AddHasRoute(const HasRouteTlv &aHasRoute, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
	Error AddBorderRouter(const BorderRouterTlv &aBorderRouter, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
	Error AddService(const ServiceTlv &aService, ChangedFlags &aChangedFlags);
	Error AddServer(const ServerTlv &aServer, ServiceTlv &aDstService, ChangedFlags &aChangedFlags);

	Error AllocateServiceId(uint8_t &aServiceId) const;

	void RemoveContext(uint8_t aContextId);
	void RemoveContext(PrefixTlv &aPrefix, uint8_t aContextId);

	void RemoveCommissioningData(void);

	void RemoveRloc(uint16_t aRloc16, MatchMode aMatchMode, ChangedFlags &aChangedFlags);
	void RemoveRloc(uint16_t aRloc16,
	MatchMode aMatchMode,
	const NetworkData &aExcludeNetworkData,
	ChangedFlags &aChangedFlags);
	void RemoveRlocInPrefix(PrefixTlv &aPrefix,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags &aChangedFlags);
	void RemoveRlocInService(ServiceTlv &aService,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const ServiceTlv *aExcludeService,
	ChangedFlags &aChangedFlags);
	void RemoveRlocInHasRoute(PrefixTlv &aPrefix,
	HasRouteTlv &aHasRoute,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags &aChangedFlags);
	void RemoveRlocInBorderRouter(PrefixTlv &aPrefix,
	BorderRouterTlv &aBorderRouter,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags &aChangedFlags);

	static bool RlocMatch(uint16_t aFirstRloc16, uint16_t aSecondRloc16, MatchMode aMatchMode);

	static Error Validate(const NetworkData &aNetworkData, uint16_t aRloc16);
	static Error ValidatePrefix(const PrefixTlv &aPrefix, uint16_t aRloc16);
	static Error ValidateService(const ServiceTlv &aService, uint16_t aRloc16);

	static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const HasRouteEntry &aEntry);
	static bool ContainsMatchingEntry(const HasRouteTlv *aHasRoute, const HasRouteEntry &aEntry);
	static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const BorderRouterEntry &aEntry);
	static bool ContainsMatchingEntry(const BorderRouterTlv *aBorderRouter, const BorderRouterEntry &aEntry);
	static bool ContainsMatchingServer(const ServiceTlv *aService, const ServerTlv &aServer);

	UpdateStatus UpdatePrefix(PrefixTlv &aPrefix);
	UpdateStatus UpdateService(ServiceTlv &aService);
	UpdateStatus UpdateTlv(NetworkDataTlv &aTlv, const NetworkDataTlv *aSubTlvs);

	void SendCommissioningGetResponse(const Coap::Message &aRequest,
	uint16_t aLength,
	const Ip6::MessageInfo &aMessageInfo);
	void SendCommissioningSetResponse(const Coap::Message &aRequest,
	const Ip6::MessageInfo &aMessageInfo,
	MeshCoP::StateTlv::State aState);
	void IncrementVersions(bool aIncludeStable);
	void IncrementVersions(const ChangedFlags &aFlags);

	#if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
	void CheckForNetDataGettingFull(const NetworkData &aNetworkData, uint16_t aOldRloc16);
	void MarkAsClone(void);
	#endif

	using UpdateTimer = TimerMilliIn<Leader, &Leader::HandleTimer>;

	#if OPENTHREAD_CONFIG_BORDER_ROUTER_SIGNAL_NETWORK_DATA_FULL
	bool mIsClone;
	#endif
	bool mWaitingForNetDataSync;
	ContextIds mContextIds;
	UpdateTimer mTimer;
	};

	DeclareTmfHandler(Leader, kUriServerData);
	DeclareTmfHandler(Leader, kUriCommissionerGet);
	DeclareTmfHandler(Leader, kUriCommissionerSet);

	/**
	* @}
	*/

	} // namespace NetworkData
	} // namespace ot

	#endif // OPENTHREAD_FTD

	#endif // NETWORK_DATA_LEADER_FTD_HPP_