Attachment #3070 for bug #2805

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(-)a/src/internet/model/icmpv6-header.h (-2 / +7 lines)

Lines 68-74 public:	Link Here

    ICMPV6_MOBILITY_MOBILE_PREFIX_SOLICITATION,

    ICMPV6_MOBILITY_MOBILE_PREFIX_SOLICITATION,

    ICMPV6_SECURE_ND_CERTIFICATE_PATH_SOLICITATION,

    ICMPV6_SECURE_ND_CERTIFICATE_PATH_SOLICITATION,

    ICMPV6_SECURE_ND_CERTIFICATE_PATH_ADVERTISEMENT,

    ICMPV6_SECURE_ND_CERTIFICATE_PATH_ADVERTISEMENT,

    ICMPV6_EXPERIMENTAL_MOBILITY

    ICMPV6_EXPERIMENTAL_MOBILITY,

    ICMPV6_ND_DUPLICATE_ADDRESS_REQUEST = 157,

    ICMPV6_ND_DUPLICATE_ADDRESS_CONFIRM

};

};

/**

/**

Lines 80-86 public:	Link Here

    ICMPV6_OPT_LINK_LAYER_TARGET,

    ICMPV6_OPT_LINK_LAYER_TARGET,

    ICMPV6_OPT_PREFIX,

    ICMPV6_OPT_PREFIX,

    ICMPV6_OPT_REDIRECTED,

    ICMPV6_OPT_REDIRECTED,

    ICMPV6_OPT_MTU

    ICMPV6_OPT_MTU,

    ICMPV6_OPT_ADDRESS_REGISTRATION = 33,

    ICMPV6_OPT_SIXLOWPAN_CONTEXT,

    ICMPV6_OPT_AUTHORITATIVE_BORDER_ROUTER

};

};

/**

/**

(-)a/src/internet/model/icmpv6-l4-protocol.cc (+6 lines)

Lines 161-166 void Icmpv6L4Protocol::SetNode (Ptr<Node> node)	Link Here

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  m_node = node;

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  m_node = node;

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Ptr<Node> Icmpv6L4Protocol::GetNode ()

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  NS_LOG_FUNCTION (this);

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  return m_node;

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uint16_t Icmpv6L4Protocol::GetStaticProtocolNumber ()

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uint16_t Icmpv6L4Protocol::GetStaticProtocolNumber ()

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  NS_LOG_FUNCTION_NOARGS ();

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  NS_LOG_FUNCTION_NOARGS ();

(-)a/src/internet/model/icmpv6-l4-protocol.h (-26 / +32 lines)

Lines 115-120 public:	Link Here

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*/

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*/

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  void SetNode (Ptr<Node> node);

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  void SetNode (Ptr<Node> node);

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/**

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   * \brief Get the node.

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   * \return node

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*/

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  Ptr<Node> GetNode ();

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/**

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/**

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   * \brief This method is called by AddAgregate and completes the aggregation

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   * \brief This method is called by AddAgregate and completes the aggregation

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   * by setting the node in the ICMPv6 stack and adding ICMPv6 factory to

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   * by setting the node in the ICMPv6 stack and adding ICMPv6 factory to

Lines 199-205 public:	Link Here

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   * \param target target IPv6 address

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   * \param target target IPv6 address

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   * \param hardwareAddress our mac address

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   * \param hardwareAddress our mac address

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*/

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*/

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  void SendNS (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address hardwareAddress);

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  virtual void SendNS (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address hardwareAddress);

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/**

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/**

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   * \brief Send an error Destination Unreachable.

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   * \brief Send an error Destination Unreachable.

Lines 380-385 protected:	Link Here

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*/

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*/

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  virtual void DoDispose ();

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  virtual void DoDispose ();

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/**

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   * \brief Get the cache corresponding to the device.

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   * \param device the device

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   * \returns the NdiscCache associated with the device

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*/

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  Ptr<NdiscCache> FindCache (Ptr<NetDevice> device);

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/**

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   * \brief Receive Neighbor Advertisement method.

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   * \param p the packet

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   * \param src source address

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   * \param dst destination address

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   * \param interface the interface from which the packet is coming

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*/

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  void HandleNA (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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/**

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   * \brief Link layer address option processing.

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   * \param lla LLA option

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   * \param src source address

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   * \param dst destination address

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   * \param interface the interface from which the packet is coming

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*/

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  void ReceiveLLA (Icmpv6OptionLinkLayerAddress lla, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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private:

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private:

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  typedef std::list<Ptr<NdiscCache> > CacheList; //!< container of NdiscCaches

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  typedef std::list<Ptr<NdiscCache> > CacheList; //!< container of NdiscCaches

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Lines 477-491 private:	Link Here

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*/

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*/

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  void HandleEchoRequest (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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  void HandleEchoRequest (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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/**

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   * \brief Receive Neighbor Advertisement method.

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   * \param p the packet

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   * \param src source address

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   * \param dst destination address

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   * \param interface the interface from which the packet is coming

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*/

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  void HandleNA (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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/**

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/**

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   * \brief Receive Redirection method.

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   * \brief Receive Redirection method.

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   * \param p the packet

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   * \param p the packet

Lines 531-552 private:	Link Here

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*/

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*/

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  void HandleParameterError (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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  void HandleParameterError (Ptr<Packet> p, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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/**

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   * \brief Link layer address option processing.

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   * \param lla LLA option

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   * \param src source address

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   * \param dst destination address

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   * \param interface the interface from which the packet is coming

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*/

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  void ReceiveLLA (Icmpv6OptionLinkLayerAddress lla, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface);

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/**

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   * \brief Get the cache corresponding to the device.

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   * \param device the device

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   * \returns the NdiscCache associated with the device

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*/

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  Ptr<NdiscCache> FindCache (Ptr<NetDevice> device);

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  // From IpL4Protocol

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  // From IpL4Protocol

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  virtual void SetDownTarget (IpL4Protocol::DownTargetCallback cb);

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  virtual void SetDownTarget (IpL4Protocol::DownTargetCallback cb);

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  virtual void SetDownTarget6 (IpL4Protocol::DownTargetCallback6 cb);

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  virtual void SetDownTarget6 (IpL4Protocol::DownTargetCallback6 cb);

(-)a/src/internet/model/ndisc-cache.h (-10 / +12 lines)

Lines 342-347 public:	Link Here

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*/

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*/

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    void SetIpv6Address (Ipv6Address ipv6Address);

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    void SetIpv6Address (Ipv6Address ipv6Address);

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protected:

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/**

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     * \brief the NdiscCache associated.

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*/

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    NdiscCache* m_ndCache;

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private:

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private:

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/**

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/**

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     * \brief The IPv6 address.

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     * \brief The IPv6 address.

Lines 366-376 private:	Link Here

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*/

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*/

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    NdiscCacheEntryState_e m_state;

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    NdiscCacheEntryState_e m_state;

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/**

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     * \brief the NdiscCache associated.

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*/

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    NdiscCache* m_ndCache;

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/**

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/**

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     * \brief The MAC address.

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     * \brief The MAC address.

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*/

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*/

Lines 402-407 private:	Link Here

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    uint8_t m_nsRetransmit;

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    uint8_t m_nsRetransmit;

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};

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};

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protected:

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/**

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   * \brief Dispose this object.

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*/

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  void DoDispose ();

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private:

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private:

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/**

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/**

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   * \brief Neighbor Discovery Cache container

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   * \brief Neighbor Discovery Cache container

Lines 427-437 private:	Link Here

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*/

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*/

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  NdiscCache& operator= (NdiscCache const &);

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  NdiscCache& operator= (NdiscCache const &);

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/**

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   * \brief Dispose this object.

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*/

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  void DoDispose ();

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/**

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/**

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   * \brief The NetDevice.

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   * \brief The NetDevice.

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*/

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*/




{
  CommandLine cmd;
  cmd.Parse (argc, argv);

#if 0
  LogComponentEnable ("Ping6Application", LOG_LEVEL_ALL);
  LogComponentEnable ("LrWpanMac",LOG_LEVEL_ALL);

#endif

  NodeContainer nodes;
  nodes.Create (2);

  MobilityHelper mobility;
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");

                                 "LayoutType", StringValue ("RowFirst"));
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.Install (nodes);

  LrWpanHelper lrWpanHelper;
  // Add and install the LrWpanNetDevice for each node
  NetDeviceContainer lrwpanDevices = lrWpanHelper.Install (nodes);

  // Fake PAN association and short address assignment.
  lrWpanHelper.AssociateToPan (lrwpanDevices, 0);

  //std::cout<< deviceInterfaces.GetAddress(1,1)<<std::endl;



  uint32_t packetSize = 10;
  uint32_t maxPacketCount = 5;
  Time interPacketInterval = Seconds (1.);

  AsciiTraceHelper ascii;
  lrWpanHelper.EnableAsciiAll (ascii.CreateFileStream ("Ping-6LoW-lr-wpan.tr"));
  lrWpanHelper.EnablePcapAll (std::string ("Ping-6LoW-lr-wpan"), true);

  Simulator::Stop (Seconds (10));

  Simulator::Run ();
  Simulator::Destroy ();


(-)a/src/sixlowpan/model/sixlowpan-header.cc (-3 / +3 lines)

Lines 545-551 NS_OBJECT_ENSURE_REGISTERED (SixLowPanFrag1);	Link Here

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SixLowPanFrag1::SixLowPanFrag1 ()

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SixLowPanFrag1::SixLowPanFrag1 ()

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  : m_datagramSize (0),

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  : m_datagramSize (0),

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    m_datagramTag (0)

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  m_datagramTag (0)

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Lines 632-639 NS_OBJECT_ENSURE_REGISTERED (SixLowPanFragN);	Link Here

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SixLowPanFragN::SixLowPanFragN ()

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SixLowPanFragN::SixLowPanFragN ()

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  : m_datagramSize (0),

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  : m_datagramSize (0),

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    m_datagramTag (0),

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  m_datagramTag (0),

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    m_datagramOffset (0)

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  m_datagramOffset (0)

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/*

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/*




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#include "ns3/assert.h"
#include "ns3/address-utils.h"
#include "ns3/log.h"

#include "sixlowpan-nd-header.h"

namespace ns3
{

NS_LOG_COMPONENT_DEFINE ("SixLowPanNdHeader");

NS_OBJECT_ENSURE_REGISTERED (Icmpv6DuplicateAddress);

Icmpv6DuplicateAddress::Icmpv6DuplicateAddress ()
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_REQUEST);
  SetCode (0);
  SetChecksum (0);
  m_status = 0;
  m_reserved = 0;
  m_regTime = 0;
  m_eui64 = Mac64Address ("00:00:00:00:00:00");
  m_regAddress = Ipv6Address ("::");
}

Icmpv6DuplicateAddress::Icmpv6DuplicateAddress (bool request)
{
  NS_LOG_FUNCTION (this << request);
  SetType (request ? Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_REQUEST : Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_CONFIRM);
  SetCode (0);
  SetChecksum (0);
  m_status = 0;
  m_reserved = 0;
  m_regTime = 0;
  m_eui64 = Mac64Address ("00:00:00:00:00:00");
  m_regAddress = Ipv6Address ("::");
}

Icmpv6DuplicateAddress::Icmpv6DuplicateAddress (uint16_t time, Mac64Address eui, Ipv6Address address)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_REQUEST);
  SetCode (0);
  SetChecksum (0);
  m_status = 0;
  m_reserved = 0;
  m_regTime = time;
  m_eui64 = eui;
  m_regAddress = address;
}

Icmpv6DuplicateAddress::Icmpv6DuplicateAddress (uint8_t status, uint16_t time, Mac64Address eui, Ipv6Address address)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_CONFIRM);
  SetCode (0);
  SetChecksum (0);
  m_status = status;
  m_reserved = 0;
  m_regTime = time;
  m_eui64 = eui;
  m_regAddress = address;
}

Icmpv6DuplicateAddress::~Icmpv6DuplicateAddress ()
{
  NS_LOG_FUNCTION (this);
}

TypeId Icmpv6DuplicateAddress::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Icmpv6DuplicateAddress")
        .SetParent<Icmpv6Header> ()
        .SetGroupName ("Internet")
        .AddConstructor<Icmpv6DuplicateAddress> ()
        ;
  return tid;
}

TypeId Icmpv6DuplicateAddress::GetInstanceTypeId () const
{
  NS_LOG_FUNCTION (this);
  return GetTypeId ();
}

uint8_t Icmpv6DuplicateAddress::GetStatus () const
{
  NS_LOG_FUNCTION (this);
  return m_status;
}

void Icmpv6DuplicateAddress::SetStatus (uint8_t status)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (status));
  m_status = status;
}

uint8_t Icmpv6DuplicateAddress::GetReserved () const
{
  NS_LOG_FUNCTION (this);
  return m_reserved;
}

void Icmpv6DuplicateAddress::SetReserved (uint8_t reserved)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (reserved));
  m_reserved = reserved;
}

uint16_t Icmpv6DuplicateAddress::GetRegTime () const
{
  NS_LOG_FUNCTION (this);
  return m_regTime;
}

void Icmpv6DuplicateAddress::SetRegTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_regTime = time;
}

Mac64Address Icmpv6DuplicateAddress::GetEui64 () const
{
  NS_LOG_FUNCTION (this);
  return m_eui64;
}

void Icmpv6DuplicateAddress::SetEui64 (Mac64Address eui)
{
  NS_LOG_FUNCTION (this << eui);
  m_eui64 = eui;
}

Ipv6Address Icmpv6DuplicateAddress::GetRegAddress () const
{
  NS_LOG_FUNCTION (this);
  return m_regAddress;
}

void Icmpv6DuplicateAddress::SetRegAddress (Ipv6Address registered)
{
  NS_LOG_FUNCTION (this << registered);
  m_regAddress = registered;
}

void Icmpv6DuplicateAddress::Print (std::ostream& os) const
{
  NS_LOG_FUNCTION (this << &os);
  os << "( type = " << (uint32_t)GetType () << " code = " << (uint32_t)GetCode () << " status = " << (uint32_t)m_status << " lifetime = " << m_regTime << " EUI-64 = " << m_eui64 <<  " registered = " << m_regAddress << " checksum = " << (uint32_t)GetChecksum ()  << ")";
}

uint32_t Icmpv6DuplicateAddress::GetSerializedSize () const
{
  NS_LOG_FUNCTION (this);
  return 32;
}

void Icmpv6DuplicateAddress::Serialize (Buffer::Iterator start) const
{
  NS_LOG_FUNCTION (this << &start);
  uint8_t buf1[8];
  uint8_t buf2[16];
  uint16_t checksum = 0;
  Buffer::Iterator i = start;

  memset (buf1, 0x00, sizeof (buf1));
  memset (buf2, 0x0000, sizeof (buf2));

  i.WriteU8 (GetType ());
  i.WriteU8 (GetCode ());
  i.WriteU16 (checksum);
  i.WriteU8 (m_status);
  i.WriteU8 (m_reserved);
  i.WriteU16 (m_regTime);

  m_eui64.CopyTo (buf1);
  i.Write (buf1, 8);

  m_regAddress.Serialize (buf2);
  i.Write (buf2, 16);

  i = start;
  checksum = i.CalculateIpChecksum (i.GetSize (), GetChecksum ());

  i = start;
  i.Next (2);
  i.WriteU16 (checksum);
}

uint32_t Icmpv6DuplicateAddress::Deserialize (Buffer::Iterator start)
{
  NS_LOG_FUNCTION (this << &start);
  uint8_t buf1[8];
  uint8_t buf2[16];
  Buffer::Iterator i = start;

  memset (buf1, 0x00, sizeof (buf1));
  memset (buf2, 0x0000, sizeof (buf2));

  SetType (i.ReadU8 ());
  SetCode (i.ReadU8 ());
  SetChecksum (i.ReadU16 ());
  m_status = i.ReadU8 ();
  m_reserved = i.ReadU8 ();
  m_regTime = i.ReadU16 ();

  i.Read (buf1, 8);
  m_eui64.CopyFrom (buf1);

  i.Read (buf2, 16);
  m_regAddress.Deserialize (buf2);

  return GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Icmpv6OptionAddressRegistration);

Icmpv6OptionAddressRegistration::Icmpv6OptionAddressRegistration ()
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_ADDRESS_REGISTRATION);
  SetLength (2);
  m_status = 0;
  m_reserved1 = 0;
  m_reserved2 = 0;
  m_regTime = 0;
  m_eui64 = Mac64Address ("00:00:00:00:00:00");
}

Icmpv6OptionAddressRegistration::Icmpv6OptionAddressRegistration (uint16_t time, Mac64Address eui)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_ADDRESS_REGISTRATION);
  SetLength (2);
  m_status = 0;
  m_reserved1 = 0;
  m_reserved2 = 0;
  m_regTime = time;
  m_eui64 = eui;
}

Icmpv6OptionAddressRegistration::Icmpv6OptionAddressRegistration (uint8_t status, uint16_t time, Mac64Address eui)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_ADDRESS_REGISTRATION);
  SetLength (2);
  m_status = status;
  m_reserved1 = 0;
  m_reserved2 = 0;
  m_regTime = time;
  m_eui64 = eui;
}

Icmpv6OptionAddressRegistration::~Icmpv6OptionAddressRegistration ()
{
  NS_LOG_FUNCTION (this);
}

TypeId Icmpv6OptionAddressRegistration::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Icmpv6OptionAddressRegistration")
        .SetParent<Icmpv6OptionHeader> ()
        .SetGroupName ("Internet")
        .AddConstructor<Icmpv6OptionAddressRegistration> ()
        ;
  return tid;
}

TypeId Icmpv6OptionAddressRegistration::GetInstanceTypeId () const
{
  NS_LOG_FUNCTION (this);
  return GetTypeId ();
}

uint8_t Icmpv6OptionAddressRegistration::GetStatus () const
{
  NS_LOG_FUNCTION (this);
  return m_status;
}

void Icmpv6OptionAddressRegistration::SetStatus (uint8_t status)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (status));
  m_status = status;
}

uint8_t Icmpv6OptionAddressRegistration::GetReserved1 () const
{
  NS_LOG_FUNCTION (this);
  return m_reserved1;
}

void Icmpv6OptionAddressRegistration::SetReserved1 (uint8_t reserved)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (reserved));
  m_reserved1 = reserved;
}

uint16_t Icmpv6OptionAddressRegistration::GetReserved2 () const
{
  NS_LOG_FUNCTION (this);
  return m_reserved2;
}

void Icmpv6OptionAddressRegistration::SetReserved2 (uint16_t reserved)
{
  NS_LOG_FUNCTION (this << reserved);
  m_reserved2 = reserved;
}

uint16_t Icmpv6OptionAddressRegistration::GetRegTime () const
{
  NS_LOG_FUNCTION (this);
  return m_regTime;
}

void Icmpv6OptionAddressRegistration::SetRegTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_regTime = time;
}

Mac64Address Icmpv6OptionAddressRegistration::GetEui64 () const
{
  NS_LOG_FUNCTION (this);
  return m_eui64;
}

void Icmpv6OptionAddressRegistration::SetEui64 (Mac64Address eui)
{
  NS_LOG_FUNCTION (this << eui);
  m_eui64 = eui;
}

void Icmpv6OptionAddressRegistration::Print (std::ostream& os) const
{
  NS_LOG_FUNCTION (this << &os);
  os << "( type = " << (uint32_t)GetType () << " length = " << (uint32_t)GetLength () << " status " << (uint32_t)m_status << " lifetime " << m_regTime << " EUI-64 " << m_eui64 << ")";
}

uint32_t Icmpv6OptionAddressRegistration::GetSerializedSize () const
{
  NS_LOG_FUNCTION (this);
  return 16;
}

void Icmpv6OptionAddressRegistration::Serialize (Buffer::Iterator start) const
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[8];

  memset (buf, 0x00, sizeof (buf));

  i.WriteU8 (GetType ());
  i.WriteU8 (GetLength ());
  i.WriteU8 (m_status);
  i.WriteU8 (m_reserved1);
  i.WriteU16 (m_reserved2);
  i.WriteU16 (m_regTime);

  m_eui64.CopyTo (buf);
  i.Write (buf, 8);
}

uint32_t Icmpv6OptionAddressRegistration::Deserialize (Buffer::Iterator start)
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[8];

  memset (buf, 0x00, sizeof (buf));

  SetType (i.ReadU8 ());
  SetLength (i.ReadU8 ());
  m_status = i.ReadU8 ();
  m_reserved1 = i.ReadU8 ();
  m_reserved2 = i.ReadU16 ();
  m_regTime = i.ReadU16 ();

  i.Read (buf, 8);
  m_eui64.CopyFrom (buf);

  return GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Icmpv6OptionSixLowPanContext);

Icmpv6OptionSixLowPanContext::Icmpv6OptionSixLowPanContext ()
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_SIXLOWPAN_CONTEXT);
  SetLength (0);
  m_contextLen = 0;
  m_reserved1 = 0;
  m_c = false;
  m_cid = 0;
  m_reserved2 = 0;
  m_validTime = 0;
  m_prefix = Ipv6Prefix ("::");
}

Icmpv6OptionSixLowPanContext::Icmpv6OptionSixLowPanContext (bool c, uint8_t cid, uint16_t time, Ipv6Prefix prefix)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_SIXLOWPAN_CONTEXT);

  if (prefix.GetPrefixLength () > 64)
    {
      SetLength (3);
    }
  else
    {
      SetLength (2);
    }

  m_contextLen = prefix.GetPrefixLength ();
  m_reserved1 = 0;
  m_c = c;
  m_cid = cid;
  m_reserved2 = 0;
  m_validTime = time;
  m_prefix = prefix;
}

Icmpv6OptionSixLowPanContext::~Icmpv6OptionSixLowPanContext ()
{
  NS_LOG_FUNCTION (this);
}

TypeId Icmpv6OptionSixLowPanContext::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Icmpv6OptionSixLowPanContext")
            .SetParent<Icmpv6OptionHeader> ()
            .SetGroupName ("Internet")
            .AddConstructor<Icmpv6OptionSixLowPanContext> ()
            ;
  return tid;
}

TypeId Icmpv6OptionSixLowPanContext::GetInstanceTypeId () const
{
  NS_LOG_FUNCTION (this);
  return GetTypeId ();
}

uint8_t Icmpv6OptionSixLowPanContext::GetContextLen () const
{
  NS_LOG_FUNCTION (this);
  return m_contextLen;
}

void Icmpv6OptionSixLowPanContext::SetContextLen (uint8_t cLen)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (cLen));
  NS_ASSERT (cLen <= 128);
  m_contextLen = cLen;
}

uint8_t Icmpv6OptionSixLowPanContext::GetReserved1 () const
{
  NS_LOG_FUNCTION (this);
  return m_reserved1;
}

void Icmpv6OptionSixLowPanContext::SetReserved1 (uint8_t reserved1)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (reserved1));
  m_reserved1 = reserved1;
}

bool Icmpv6OptionSixLowPanContext::IsFlagC () const
{
  NS_LOG_FUNCTION (this);
  return m_c;
}

void Icmpv6OptionSixLowPanContext::SetFlagC (bool c)
{
  NS_LOG_FUNCTION (this << c);
  m_c = c;
}

uint8_t Icmpv6OptionSixLowPanContext::GetCid () const
{
  NS_LOG_FUNCTION (this);
  return m_cid;
}

void Icmpv6OptionSixLowPanContext::SetCid (uint8_t cid)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (cid));
  NS_ASSERT (cid <= 15);
  m_cid = cid;
}

uint16_t Icmpv6OptionSixLowPanContext::GetReserved2 () const
{
  NS_LOG_FUNCTION (this);
  return m_reserved2;
}

void Icmpv6OptionSixLowPanContext::SetReserved2 (uint16_t reserved2)
{
  NS_LOG_FUNCTION (this << reserved2);
  m_reserved2 = reserved2;
}

uint16_t Icmpv6OptionSixLowPanContext::GetValidTime () const
{
  NS_LOG_FUNCTION (this);
  return m_validTime;
}

void Icmpv6OptionSixLowPanContext::SetValidTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_validTime = time;
}

Ipv6Prefix Icmpv6OptionSixLowPanContext::GetContextPrefix () const
{
  NS_LOG_FUNCTION (this);
  return m_prefix;
}

void Icmpv6OptionSixLowPanContext::SetContextPrefix (Ipv6Prefix prefix)
{
  NS_LOG_FUNCTION (this << prefix);
  m_prefix = prefix;
}

void Icmpv6OptionSixLowPanContext::Print (std::ostream& os) const
{
  NS_LOG_FUNCTION (this << &os);
  os << "( type = " << (uint32_t)GetType () << " length = "
      << (uint32_t)GetLength () << " context length = "
      << (uint32_t)m_contextLen << " flag C = " << m_c << " CID = "
      << (uint32_t)m_cid << " lifetime = " << m_validTime
      << " context prefix = " << m_prefix << ")";
}

uint32_t Icmpv6OptionSixLowPanContext::GetSerializedSize () const
{
  NS_LOG_FUNCTION (this);
  uint8_t nb = GetLength() * 8;
  return nb;
}

void Icmpv6OptionSixLowPanContext::Serialize (Buffer::Iterator start) const
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[16];
  uint8_t reserved = m_reserved1;

  memset (buf, 0x0000, sizeof (buf));

  i.WriteU8 (GetType ());
  i.WriteU8 (GetLength ());
  i.WriteU8 (m_contextLen);

  reserved |= m_cid;
  reserved |= (uint8_t)(m_c << 4);

  i.WriteU8 (reserved);
  i.WriteU16 (m_reserved2);
  i.WriteU16 (m_validTime);

  m_prefix.GetBytes (buf);
  i.Write (buf, 16);
}

uint32_t Icmpv6OptionSixLowPanContext::Deserialize (Buffer::Iterator start)
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[16];
  uint8_t reserved;

  memset (buf, 0x0000, sizeof (buf));

  SetType (i.ReadU8 ());
  SetLength (i.ReadU8 ());
  SetContextLen (i.ReadU8 ());

  reserved = i.ReadU8 ();
  m_c = false;
  if (reserved & (uint8_t)(1 << 4))
    {
      m_c = true;
    }
  m_cid = reserved & 0xF;
  m_reserved1 = reserved >> 5;

  m_reserved2 = i.ReadU16 ();
  m_validTime = i.ReadNtohU16 ();

  i.Read (buf, 16);
  m_prefix = Ipv6Prefix (buf);

  return GetSerializedSize ();
}


NS_OBJECT_ENSURE_REGISTERED (Icmpv6OptionAuthoritativeBorderRouter);

Icmpv6OptionAuthoritativeBorderRouter::Icmpv6OptionAuthoritativeBorderRouter ()
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_AUTHORITATIVE_BORDER_ROUTER);
  SetLength (3);
  m_version = 0;
  m_validTime = 0;
  m_routerAddress = Ipv6Address ("::");
}

Icmpv6OptionAuthoritativeBorderRouter::Icmpv6OptionAuthoritativeBorderRouter (uint32_t version, uint16_t time, Ipv6Address address)
{
  NS_LOG_FUNCTION (this);
  SetType (Icmpv6Header::ICMPV6_OPT_AUTHORITATIVE_BORDER_ROUTER);
  SetLength (3);
  m_version = version;
  m_validTime = time;
  m_routerAddress = address;
}

Icmpv6OptionAuthoritativeBorderRouter::~Icmpv6OptionAuthoritativeBorderRouter ()
{
  NS_LOG_FUNCTION (this);
}

TypeId Icmpv6OptionAuthoritativeBorderRouter::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::Icmpv6OptionAuthoritativeBorderRouter")
        .SetParent<Icmpv6OptionHeader> ()
        .SetGroupName ("Internet")
        .AddConstructor<Icmpv6OptionAuthoritativeBorderRouter> ()
        ;
  return tid;
}

TypeId Icmpv6OptionAuthoritativeBorderRouter::GetInstanceTypeId () const
{
  NS_LOG_FUNCTION (this);
  return GetTypeId ();
}

uint32_t Icmpv6OptionAuthoritativeBorderRouter::GetVersion () const
{
  NS_LOG_FUNCTION (this);
  return m_version;
}

void Icmpv6OptionAuthoritativeBorderRouter::SetVersion (uint32_t version)
{
  NS_LOG_FUNCTION (this << version);
  m_version = version;
}

uint16_t Icmpv6OptionAuthoritativeBorderRouter::GetValidTime () const
{
  NS_LOG_FUNCTION (this);
  return m_validTime;
}

void Icmpv6OptionAuthoritativeBorderRouter::SetValidTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_validTime = time;
}

Ipv6Address Icmpv6OptionAuthoritativeBorderRouter::GetRouterAddress () const
{
  NS_LOG_FUNCTION (this);
  return m_routerAddress;
}

void Icmpv6OptionAuthoritativeBorderRouter::SetRouterAddress (Ipv6Address router)
{
  NS_LOG_FUNCTION (this << router);
  m_routerAddress = router;
}

void Icmpv6OptionAuthoritativeBorderRouter::Print (std::ostream& os) const
{
  NS_LOG_FUNCTION (this << &os);
  os << "( type = " << (uint32_t)GetType () << " length = " << (uint32_t)GetLength () << " version = " << m_version << " lifetime = " << m_validTime << " router address = " << m_routerAddress << ")";
}

uint32_t Icmpv6OptionAuthoritativeBorderRouter::GetSerializedSize () const
{
  NS_LOG_FUNCTION (this);
  return 24;
}

void Icmpv6OptionAuthoritativeBorderRouter::Serialize (Buffer::Iterator start) const
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[16];
  uint32_t versionL = m_version;
  uint32_t versionH = m_version;

  memset (buf, 0x0000, sizeof (buf));

  i.WriteU8 (GetType ());
  i.WriteU8 (GetLength ());

  versionL &= 0xFFFF;
  i.WriteU16 ((uint16_t)versionL);
  versionH >>= 16;
  versionH &= 0xFFFF;
  i.WriteU16 ((uint16_t)versionH);

  i.WriteU16 (m_validTime);

  m_routerAddress.Serialize (buf);
  i.Write (buf, 16);
}

uint32_t Icmpv6OptionAuthoritativeBorderRouter::Deserialize (Buffer::Iterator start)
{
  NS_LOG_FUNCTION (this << &start);
  Buffer::Iterator i = start;
  uint8_t buf[16];
  uint32_t versionL;
  uint32_t versionH;

  memset (buf, 0x0000, sizeof (buf));

  SetType (i.ReadU8 ());
  SetLength (i.ReadU8 ());

  versionL = (uint32_t)i.ReadU16 ();
  versionH = (uint32_t)i.ReadU16 ();
  versionH <<= 16;
  m_version = (versionL &= 0xFFFF) + (versionH &= 0xFFFF0000);

  m_validTime = i.ReadU16 ();

  i.Read (buf, 16);
  m_routerAddress.Deserialize (buf);

  return GetSerializedSize ();
}

} /* namespace ns3 */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#ifndef SIXLOWPAN_ND_HEADER_H
#define SIXLOWPAN_ND_HEADER_H

#include "ns3/header.h"
#include "ns3/ipv6-address.h"
#include "ns3/mac64-address.h"
#include "ns3/icmpv6-header.h"

namespace ns3
{

/**
 * \ingroup sixlowpan
 * \class Icmpv6DuplicateAddress
 * \brief ICMPv6 Duplicate Address header.
 */
class Icmpv6DuplicateAddress : public Icmpv6Header
{
public:

  /**
   * \brief Constructor.
   */
  Icmpv6DuplicateAddress ();

  /**
     * \brief Constructor.
     * \param request duplicate address request or duplicate address confirm
     */
  Icmpv6DuplicateAddress (bool request);

  /**
   * \brief Constructor (DAR).
   * \param time the registration lifetime (units of 60 seconds)
   * \param eui the EUI-64
   * \param address the registrered address
   */
  Icmpv6DuplicateAddress (uint16_t time, Mac64Address eui, Ipv6Address address);

  /**
   * \brief Constructor (DAC).
   * \param status the status (DAC)
   * \param time the registration lifetime (units of 60 seconds)
   * \param eui the EUI-64
   * \param address the registrered address
   */
  Icmpv6DuplicateAddress (uint8_t status, uint16_t time, Mac64Address eui, Ipv6Address address);

  /**
   * \brief Destructor.
   */
  virtual ~Icmpv6DuplicateAddress ();

  /**
   * \brief Get the UID of this class.
   * \return UID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Get the instance type ID.
   * \return instance type ID
   */
  virtual TypeId GetInstanceTypeId () const;

  /**
   * \brief Get the status field.
   * \return status value
   */
  uint8_t GetStatus () const;

  /**
   * \brief Set the status field.
   * \param status the status value
   */
  void SetStatus (uint8_t status);

  /**
   * \brief Get the reserved field.
   * \return reserved value
   */
  uint8_t GetReserved () const;

  /**
   * \brief Set the reserved field.
   * \param reserved the reserved value
   */
  void SetReserved (uint8_t reserved);

  /**
   * \brief Get the registration lifetime field.
   * \return registration lifetime value (units of 60 seconds)
   */
  uint16_t GetRegTime () const;

  /**
   * \brief Set the registration lifetime field.
   * \param time the registration lifetime value (units of 60 seconds)
   */
  void SetRegTime (uint16_t time);

  /**
   * \brief Get the EUI-64 field.
   * \return EUI-64 value
   */
  Mac64Address GetEui64 () const;

  /**
   * \brief Set the EUI-64 field.
   * \param eui the EUI-64 value
   */
  void SetEui64 (Mac64Address eui);

  /**
   * \brief Get the registered address field.
   * \return registered address value
   */
  Ipv6Address GetRegAddress () const;

  /**
   * \brief Set the registered address field.
   * \param registered the registered address value
   */
  void SetRegAddress (Ipv6Address registered);

  /**
   * \brief Print informations.
   * \param os output stream
   */
  virtual void Print (std::ostream& os) const;

  /**
   * \brief Get the serialized size.
   * \return serialized size
   */
  virtual uint32_t GetSerializedSize () const;

  /**
   * \brief Serialize the packet.
   * \param start start offset
   */
  virtual void Serialize (Buffer::Iterator start) const;

  /**
   * \brief Deserialize the packet.
   * \param start start offset
   * \return length of packet
   */
  virtual uint32_t Deserialize (Buffer::Iterator start);

private:

  /**
   * \brief The status value.
   */
  uint8_t m_status;

  /**
   * \brief The reserved value.
   */
  uint8_t m_reserved;

  /**
   * \brief The registration lifetime value (units of 60 seconds).
   */
  uint16_t m_regTime;

  /**
   * \brief The EUI-64 value.
   */
  Mac64Address m_eui64;

  /**
   * \brief The registered address value.
   */
  Ipv6Address m_regAddress;

};

/**
 * \ingroup sixlowpan
 * \class Icmpv6OptionAddressRegistration
 * \brief ICMPv6 Address Registration Option header.
 */
class Icmpv6OptionAddressRegistration : public Icmpv6OptionHeader
{
public:

  /**
   * \brief Constructor.
   */
  Icmpv6OptionAddressRegistration ();

  /**
   * \brief Constructor.
   * \param time the registration lifetime (units of 60 seconds)
   * \param eui the EUI-64
   */
  Icmpv6OptionAddressRegistration (uint16_t time, Mac64Address eui);

  /**
   * \brief Constructor.
   * \param status the status value
   * \param time the registration lifetime (units of 60 seconds)
   * \param eui the EUI-64
   */
  Icmpv6OptionAddressRegistration (uint8_t status, uint16_t time, Mac64Address eui);

  /**
   * \brief Destructor.
   */
  virtual ~Icmpv6OptionAddressRegistration ();

  /**
   * \brief Get the UID of this class.
   * \return UID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Get the instance type ID.
   * \return instance type ID
   */
  virtual TypeId GetInstanceTypeId () const;

  /**
   * \brief Get the status field.
   * \return status value
   */
  uint8_t GetStatus () const;

  /**
   * \brief Set the status field.
   * \param status the status value
   */
  void SetStatus (uint8_t status);

  /**
   * \brief Get the first reserved field.
   * \return first reserved value
   */
  uint8_t GetReserved1 () const;

  /**
   * \brief Set the first reserved field.
   * \param reserved the first reserved value
   */
  void SetReserved1 (uint8_t reserved);

  /**
   * \brief Get the second reserved field.
   * \return second reserved value
   */
  uint16_t GetReserved2 () const;

  /**
   * \brief Set the second reserved field.
   * \param reserved the second reserved value
   */
  void SetReserved2 (uint16_t reserved);

  /**
   * \brief Get the registration lifetime field.
   * \return registration lifetime value (units of 60 seconds)
   */
  uint16_t GetRegTime () const;

  /**
   * \brief Set the registration lifetime field.
   * \param time the registration lifetime value (units of 60 seconds)
   */
  void SetRegTime (uint16_t time);

  /**
   * \brief Get the EUI-64 field.
   * \return EUI-64 value
   */
  Mac64Address GetEui64 () const;

  /**
   * \brief Set the EUI-64 field.
   * \param eui the EUI-64 value
   */
  void SetEui64 (Mac64Address eui);

  /**
   * \brief Print informations.
   * \param os output stream
   */
  virtual void Print (std::ostream& os) const;

  /**
   * \brief Get the serialized size.
   * \return serialized size
   */
  virtual uint32_t GetSerializedSize () const;

  /**
   * \brief Serialize the packet.
   * \param start start offset
   */
  virtual void Serialize (Buffer::Iterator start) const;

  /**
   * \brief Deserialize the packet.
   * \param start start offset
   * \return length of packet
   */
  virtual uint32_t Deserialize (Buffer::Iterator start);

private:

  /**
   * \brief The status value.
   */
  uint8_t m_status;

  /**
   * \brief The first reserved value.
   */
  uint8_t m_reserved1;

  /**
   * \brief The second reserved value.
   */
  uint16_t m_reserved2;

  /**
   * \brief The registration lifetime value (units of 60 seconds).
   */
  uint16_t m_regTime;

  /**
   * \brief The EUI-64 value.
   */
  Mac64Address m_eui64;

};

/**
 * \ingroup sixlowpan
 * \class Icmpv6OptionSixLowPanContext
 * \brief ICMPv6 SixLowPan Context Option header.
 */
class Icmpv6OptionSixLowPanContext : public Icmpv6OptionHeader
{
public:

  /**
   * \brief Constructor.
   */
  Icmpv6OptionSixLowPanContext ();

  /**
   * \brief Constructor.
   * \param c the c flag
   * \param cid the context identifier
   * \param time the valid lifetime (units of 60 seconds)
   * \param prefix the context prefix
   */
  Icmpv6OptionSixLowPanContext (bool c, uint8_t cid, uint16_t time, Ipv6Prefix prefix);

  /**
   * \brief Destructor.
   */
  virtual ~Icmpv6OptionSixLowPanContext ();

  /**
   * \brief Get the UID of this class.
   * \return UID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Get the instance type ID.
   * \return instance type ID
   */
  virtual TypeId GetInstanceTypeId () const;

  /**
   * \brief Get the context length field.
   * \return context length value
   */
  uint8_t GetContextLen () const;

  /**
   * \brief Set the context length field.
   * \param cLen the context length value
   */
  void SetContextLen (uint8_t cLen);

  /**
   * \brief Get the first reserved field.
   * \return first reserved value
   */
  uint8_t GetReserved1 () const;

  /**
   * \brief Set the first reserved field.
   * \param reserved the first reserved value
   */
  void SetReserved1 (uint8_t reserved1);

  /**
   * \brief Is compression flag ?
   * \return true if context is valid for use in compression, false otherwise
   */
  bool IsFlagC () const;

  /**
   * \brief Set the C flag.
   * \param c the C flag
   */
  void SetFlagC (bool c);

  /**
   * \brief Get the context identifier field.
   * \return context identifier value
   */
  uint8_t GetCid () const;

  /**
   * \brief Set the context identifier field.
   * \param cid the context identifier value
   */
  void SetCid (uint8_t cid);

  /**
   * \brief Get the second reserved field.
   * \return second reserved value
   */
  uint16_t GetReserved2 () const;

  /**
   * \brief Set the second reserved field.
   * \param reserved the second reserved value
   */
  void SetReserved2 (uint16_t reserved);

  /**
   * \brief Get the valid lifetime field.
   * \return valid lifetime value (units of 60 seconds)
   */
  uint16_t GetValidTime () const;

  /**
   * \brief Set the valid lifetime field.
   * \param time the valid lifetime value (units of 60 seconds)
   */
  void SetValidTime (uint16_t time);

  /**
   * \brief Get the context prefix field.
   * \return context prefix value
   */
  Ipv6Prefix GetContextPrefix () const;

  /**
   * \brief Set the context prefix field.
   * \param prefix the context prefix value
   */
  void SetContextPrefix (Ipv6Prefix prefix);

  /**
   * \brief Print informations.
   * \param os output stream
   */
  virtual void Print (std::ostream& os) const;

  /**
   * \brief Get the serialized size.
   * \return serialized size
   */
  virtual uint32_t GetSerializedSize () const;

  /**
   * \brief Serialize the packet.
   * \param start start offset
   */
  virtual void Serialize (Buffer::Iterator start) const;

  /**
   * \brief Deserialize the packet.
   * \param start start offset
   * \return length of packet
   */
  virtual uint32_t Deserialize (Buffer::Iterator start);

private:

  /**
   * \brief The context length value.
   */
  uint8_t m_contextLen;

  /**
   * \brief The first reserved value.
   */
  uint8_t m_reserved1;

  /**
   * \brief The compression flag, indicates that this context is valid for use in compression.
   */
  bool m_c;

  /**
   * \brief The context identifier value.
   */
  uint8_t m_cid;

  /**
   * \brief The second reserved value.
   */
  uint16_t m_reserved2;

  /**
   * \brief The valid lifetime value (units of 60 seconds).
   */
  uint16_t m_validTime;

  /**
   * \brief The context prefix value.
   */
  Ipv6Prefix m_prefix;

};

/**
 * \ingroup sixlowpan
 * \class Icmpv6OptionAuthoritativeBorderRouter
 * \brief ICMPv6 Authoritative Border Router Option header.
 */
class Icmpv6OptionAuthoritativeBorderRouter : public Icmpv6OptionHeader
{
public:

  /**
   * \brief Constructor.
   */
  Icmpv6OptionAuthoritativeBorderRouter ();

  /**
   * \brief Constructor.
   * \param version the version value
   * \param time the valid lifetime (units of 60 seconds)
   * \param address the 6LBR address
   */
  Icmpv6OptionAuthoritativeBorderRouter (uint32_t version, uint16_t time, Ipv6Address address);

  /**
   * \brief Destructor.
   */
  virtual ~Icmpv6OptionAuthoritativeBorderRouter ();

  /**
   * \brief Get the UID of this class.
   * \return UID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Get the instance type ID.
   * \return instance type ID
   */
  virtual TypeId GetInstanceTypeId () const;

  /**
   * \brief Get the version field.
   * \return version value
   */
  uint32_t GetVersion () const;

  /**
   * \brief Set the version field.
   * \param version the version value
   */
  void SetVersion (uint32_t version);

  /**
   * \brief Get the valid lifetime field.
   * \return valid lifetime value (units of 60 seconds)
   */
  uint16_t GetValidTime () const;

  /**
   * \brief Set the valid lifetime field.
   * \param time the valid lifetime value (units of 60 seconds)
   */
  void SetValidTime (uint16_t time);

  /**
   * \brief Get the 6LB router address field.
   * \return 6LB router address value
   */
  Ipv6Address GetRouterAddress () const;

  /**
   * \brief Set the 6LB router address field.
   * \param router the 6LB router address value
   */
  void SetRouterAddress (Ipv6Address router);

  /**
   * \brief Print informations.
   * \param os output stream
   */
  virtual void Print (std::ostream& os) const;

  /**
   * \brief Get the serialized size.
   * \return serialized size
   */
  virtual uint32_t GetSerializedSize () const;

  /**
   * \brief Serialize the packet.
   * \param start start offset
   */
  virtual void Serialize (Buffer::Iterator start) const;

  /**
   * \brief Deserialize the packet.
   * \param start start offset
   * \return length of packet
   */
  virtual uint32_t Deserialize (Buffer::Iterator start);

private:
  /**
   * \brief The version value.
   */
  uint32_t m_version;

  /**
   * \brief The valid lifetime value (units of 60 seconds).
   */
  uint16_t m_validTime;

  /**
   * \brief The 6LB router address value.
   */
  Ipv6Address m_routerAddress;

};

} /* namespace ns3 */

#endif /* SIXLOWPAN_ND_HEADER_H */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007-2009 Strasbourg University
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Sebastien Vincent <vincent@clarinet.u-strasbg.fr>
 *         David Gross <gdavid.devel@gmail.com>
 *         Mehdi Benamor <benamor.mehdi@ensi.rnu.tn>
 *         Tommaso Pecorella <tommaso.pecorella@unifi.it>
 */

#include "ns3/log.h"
#include "ns3/ptr.h"
#include "ns3/assert.h"
#include "ns3/packet.h"
#include "ns3/node.h"
#include "ns3/boolean.h"
#include "ns3/ipv6-routing-protocol.h"
#include "ns3/ipv6-route.h"
#include "ns3/mac64-address.h"
#include "ns3/mac48-address.h"
#include "ns3/mac16-address.h"
#include "ns3/pointer.h"
#include "ns3/uinteger.h"
#include "ns3/string.h"
#include "ns3/sgi-hashmap.h"
#include "ns3/ipv6-l3-protocol.h"
#include "ns3/ipv6-interface.h"

#include "sixlowpan-nd-protocol.h"
#include "sixlowpan-ndisc-cache.h"
#include "sixlowpan-ndisc-ra-options.h"
#include "sixlowpan-nd-header.h"
#include "sixlowpan-net-device.h"
#include "src/network/model/packet.h"
#include "src/core/model/integer.h"
#include "src/core/model/nstime.h"

namespace ns3 {

NS_LOG_COMPONENT_DEFINE ("SixLowPanNdProtocol");

NS_OBJECT_ENSURE_REGISTERED (SixLowPanNdProtocol);

const uint16_t SixLowPanNdProtocol::MIN_CONTEXT_CHANGE_DELAY = 300;

const uint8_t SixLowPanNdProtocol::MAX_RTR_ADVERTISEMENTS = 3;
const uint8_t SixLowPanNdProtocol::MIN_DELAY_BETWEEN_RAS = 10;
const uint8_t SixLowPanNdProtocol::MAX_RA_DELAY_TIME = 2;
const uint8_t SixLowPanNdProtocol::TENTATIVE_NCE_LIFETIME = 20;

const uint8_t SixLowPanNdProtocol::MULTIHOP_HOPLIMIT = 64;

const uint8_t SixLowPanNdProtocol::RTR_SOLICITATION_INTERVAL = 10;
const uint8_t SixLowPanNdProtocol::MAX_RTR_SOLICITATIONS = 3;
const uint8_t SixLowPanNdProtocol::MAX_RTR_SOLICITATION_INTERVAL = 60;

SixLowPanNdProtocol::SixLowPanNdProtocol ()
: m_rsRetransmit (0),
  m_aroRetransmit (0)
{
  NS_LOG_FUNCTION (this);
}

SixLowPanNdProtocol::~SixLowPanNdProtocol ()
{
  NS_LOG_FUNCTION (this);
}

TypeId SixLowPanNdProtocol::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::SixLowPanNdProtocol")
            .SetParent<Icmpv6L4Protocol> ()
            .SetGroupName ("Internet")
            .AddConstructor<SixLowPanNdProtocol> ()
            .AddAttribute ("Border", "Is the node a 6LoWPAN Border Router.",
                           BooleanValue (false),
                           MakeBooleanAccessor (&SixLowPanNdProtocol::m_border),
                           MakeBooleanChecker ())
            .AddAttribute ("RegistrationLifeTime", "The amount of time (units of 60 seconds) that the router should retain the NCE for the node.",
                           UintegerValue (60),
                           MakeUintegerAccessor (&SixLowPanNdProtocol::m_regTime),
                           MakeUintegerChecker<uint16_t> ())
            .AddAttribute ("AdvanceTime", "The advance to perform maintaining of RA's information and registration.",
                           UintegerValue (5),
                           MakeUintegerAccessor (&SixLowPanNdProtocol::m_advance),
                           MakeUintegerChecker<uint16_t> ())
            ;
  return tid;
}

Ptr<Packet> SixLowPanNdProtocol::ForgeNA (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address hardwareAddress, uint8_t flags)
{
  NS_LOG_FUNCTION (this << src << dst << hardwareAddress << (uint32_t)flags);
  Ptr<Packet> p = Create<Packet> ();
  Ipv6Header ipHeader;
  Icmpv6NA na;
  Icmpv6OptionLinkLayerAddress llOption (0, hardwareAddress);  /* we give our mac address in response */

  NS_LOG_LOGIC ("Send NA ( from " << src << " to " << dst << " target " << target << ")");

  /* forge the entire NA packet from IPv6 header to ICMPv6 link-layer option, so that the packet does not pass by Icmpv6L4Protocol::Lookup again */

  p->AddHeader (llOption);
  na.SetIpv6Target (target);

  if ((flags & 1))
    {
      na.SetFlagO (true);
    }
  if ((flags & 2) && src != Ipv6Address::GetAny ())
    {
      na.SetFlagS (true);
    }
  if ((flags & 4))
    {
      na.SetFlagR (true);
    }

  na.CalculatePseudoHeaderChecksum (src, dst, p->GetSize () + na.GetSerializedSize (), PROT_NUMBER);
  p->AddHeader (na);

  ipHeader.SetSourceAddress (src);
  ipHeader.SetDestinationAddress (dst);
  ipHeader.SetNextHeader (PROT_NUMBER);
  ipHeader.SetPayloadLength (p->GetSize ());
  ipHeader.SetHopLimit (255);

  p->AddHeader (ipHeader);

  return p;
}

void SixLowPanNdProtocol::SendNS (Ipv6Address src, Ipv6Address dst, Ipv6Address target,
                                  Address linkAddr)
{
  NS_LOG_FUNCTION (this << src << dst << target << linkAddr);

  Ptr<Ipv6L3Protocol> ipv6 = GetNode ()->GetObject<Ipv6L3Protocol> ();
  uint32_t interfaceId = ipv6->GetInterfaceForAddress (src);
  Ptr<Ipv6Interface> interface = ipv6->GetInterface (interfaceId);
  Ptr<NdiscCache> cache = FindCache (interface->GetDevice ());

  if (src != Ipv6Address::GetAny ())
    {
      NS_LOG_WARN ("An unspecified source address MUST NOT be used in NS messages.");
      return;
    }

  // only send NS if the target is a router.
  NdiscCache::Entry *entry = cache->Lookup (dst);
  if (entry)
    {
      if (entry->IsRouter ())
        {
          Icmpv6L4Protocol::SendNS (interface->GetLinkLocalAddress ().GetAddress (), dst,
                                    target, linkAddr);
        }
    }
}

void SixLowPanNdProtocol::SendSixLowPanARO (Ipv6Address src, Ipv6Address dst, uint16_t time,
                                            Mac64Address eui, Address linkAddr)
{
  NS_LOG_FUNCTION (this << src << dst << time << eui << linkAddr);

  /* an unspecified src MUST NOT be used in NS */

  NS_ASSERT_MSG (src != Ipv6Address::GetAny (), "An unspecified source address MUST NOT be used in ARO messages.");
  NS_ASSERT_MSG (!dst.IsMulticast (), "Destination address must not be a multicast address in ARO messages.");

  Ptr<Packet> p = Create<Packet> ();
  Icmpv6NS ns (Ipv6Address::GetZero ());

  /* ARO (request) + SLLAO */
  Icmpv6OptionAddressRegistration arOption (time, eui);
  Icmpv6OptionLinkLayerAddress llOption (1, linkAddr);

  NS_LOG_LOGIC ("Send NS ( from " << src << " to " << dst << ")");

  p->AddHeader (arOption);
  p->AddHeader (llOption);
  ns.CalculatePseudoHeaderChecksum (src, dst, p->GetSize () + ns.GetSerializedSize (), PROT_NUMBER);
  p->AddHeader (ns);

  SendMessage (p, src, dst, 255);
}

void SixLowPanNdProtocol::SendSixLowPanARO (Ipv6Address src, Ipv6Address dst, uint8_t status,
                                            uint16_t time, Mac64Address eui)
{
  NS_LOG_FUNCTION (this << src << dst << static_cast<uint32_t> (status) << time << eui);
  Ptr<Packet> p = Create<Packet> ();
  Icmpv6NA na;

  /* ARO (response) */
  Icmpv6OptionAddressRegistration arOption (status, time, eui);

  NS_LOG_LOGIC ("Send NA ( from " << src << " to " << dst << ")");

  na.SetIpv6Target (Ipv6Address::GetZero ());
  na.SetFlagO (false);
  na.SetFlagS (true);
  na.SetFlagR (true);

  p->AddHeader (arOption);
  na.CalculatePseudoHeaderChecksum (src, dst, p->GetSize () + na.GetSerializedSize (), PROT_NUMBER);
  p->AddHeader (na);

  SendMessage (p, src, dst, 255);
}

void SixLowPanNdProtocol::SendSixLowPanRA (Ipv6Address src, Ipv6Address dst, Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << src << dst << interface);

  Ptr<SixLowPanNdiscCache> sixCache = FindSixLowPanCache (interface->GetDevice ());
  std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *> raCache = sixCache->GetRaCache ();

  for (std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *>::iterator it = raCache.begin ();
      it != raCache.end (); it++)
    {
      Icmpv6RA raHdr;
      Ipv6Header ipHeader;

      Ptr<Packet> p = Create<Packet> ();

      /* set RA header information */
      raHdr.SetFlagM (it->second->IsManagedFlag ());
      raHdr.SetFlagO (it->second->IsOtherConfigFlag ());
      raHdr.SetFlagH (it->second->IsHomeAgentFlag ());
      raHdr.SetCurHopLimit (it->second->GetCurHopLimit ());
      raHdr.SetLifeTime (it->second->GetRouterLifeTime ());
      raHdr.SetReachableTime (it->second->GetReachableTime ());
      raHdr.SetRetransmissionTime (it->second->GetRetransTimer ());

      /* Add ABRO */
      Icmpv6OptionAuthoritativeBorderRouter abroHdr;
      abroHdr.SetVersion (it->second->GetVersion ());
      abroHdr.SetValidTime (it->second->GetValidTime ());
      abroHdr.SetRouterAddress (it->second->GetBorderAddress ());
      p->AddHeader (abroHdr);

      /* Add SLLAO */
      Address addr = interface->GetDevice ()->GetAddress ();
      Icmpv6OptionLinkLayerAddress llaHdr (1, addr);
      p->AddHeader (llaHdr);

      /* Add PIOs */
      std::map<Ipv6Address, Ptr<SixLowPanPrefix> > prefixes = it->second->GetPrefixes ();
      for (std::map<Ipv6Address, Ptr<SixLowPanPrefix> >::iterator jt = prefixes.begin (); jt != prefixes.end (); jt++)
        {
          Icmpv6OptionPrefixInformation prefixHdr;
          prefixHdr.SetPrefixLength (jt->second->GetPrefixLength ());
          prefixHdr.SetFlags (jt->second->GetFlags ());
          prefixHdr.SetValidTime (jt->second->GetValidLifeTime ());
          prefixHdr.SetPreferredTime (jt->second->GetPreferredLifeTime ());
          prefixHdr.SetPrefix (jt->second->GetPrefix ());
          p->AddHeader (prefixHdr);
        }

      /* Add 6COs */
      std::map<uint8_t, Ptr<SixLowPanContext> > contexts = it->second->GetContexts ();
      for (std::map<uint8_t, Ptr<SixLowPanContext> >::iterator i = contexts.begin (); i != contexts.end (); i++)
        {
          Icmpv6OptionSixLowPanContext sixHdr;
          sixHdr.SetContextLen (i->second->GetContextLen ());
          sixHdr.SetFlagC (i->second->IsFlagC ());
          sixHdr.SetCid (i->second->GetCid ());
          sixHdr.SetValidTime (i->second->GetValidTime ());
          sixHdr.SetContextPrefix (i->second->GetContextPrefix ());
          p->AddHeader (sixHdr);
        }

      raHdr.CalculatePseudoHeaderChecksum (src, dst, p->GetSize () + raHdr.GetSerializedSize (), PROT_NUMBER);
      p->AddHeader (raHdr);

      ipHeader.SetSourceAddress (src);
      ipHeader.SetDestinationAddress (dst);
      ipHeader.SetNextHeader (PROT_NUMBER);
      ipHeader.SetPayloadLength (p->GetSize ());
      ipHeader.SetHopLimit (255);

      /* send RA */
      NS_LOG_LOGIC ("Send RA to " << dst);
      interface->Send (p, ipHeader, dst);
    }
}

void SixLowPanNdProtocol::SendSixLowPanDAR (Ipv6Address src, Ipv6Address dst, uint16_t time, Mac64Address eui,
                                            Ipv6Address registered)
{
  NS_LOG_FUNCTION (this << src << dst << time << eui << registered);
  Ptr<Packet> p = Create<Packet> ();
  Icmpv6DuplicateAddress dar (time, eui, registered);

  NS_LOG_LOGIC ("Send DAR ( from " << src << " to " << dst << ")");

  dar.CalculatePseudoHeaderChecksum (src, dst, p->GetSize () + dar.GetSerializedSize (), PROT_NUMBER);
  p->AddHeader (dar);

  SendMessage (p, src, dst, MULTIHOP_HOPLIMIT);
}

enum IpL4Protocol::RxStatus SixLowPanNdProtocol::Receive (Ptr<Packet> packet, Ipv6Header const &header,
                                                          Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << header.GetSourceAddress () << header.GetDestinationAddress () <<
                   interface);
  Ptr<Ipv6> ipv6 = GetNode ()->GetObject<Ipv6> ();
  Ptr<SixLowPanNetDevice> sixDevice = DynamicCast<SixLowPanNetDevice> (interface->GetDevice());
  NS_ASSERT_MSG (sixDevice != NULL, "SixLowPanNdProtocol cannot be installed on device different from SixLowPanNetDevice");

  uint8_t type;
  packet->CopyData (&type, sizeof(type));

  switch (type)
  {
    case Icmpv6Header::ICMPV6_ND_ROUTER_SOLICITATION:
      if (ipv6->IsForwarding (ipv6->GetInterfaceForDevice (sixDevice)))
        {
          HandleSixLowPanRS (packet, header.GetSourceAddress (), header.GetDestinationAddress (), interface);
        }
      break;
    case Icmpv6Header::ICMPV6_ND_ROUTER_ADVERTISEMENT:
      HandleSixLowPanRA (packet, header.GetSourceAddress (), header.GetDestinationAddress (), interface);
      break;
    case Icmpv6Header::ICMPV6_ND_NEIGHBOR_SOLICITATION:
      if (ipv6->IsForwarding (ipv6->GetInterfaceForDevice (sixDevice)))
        {
          HandleSixLowPanNS (packet, header.GetSourceAddress (), header.GetDestinationAddress (), interface);
        }
      break;
    case Icmpv6Header::ICMPV6_ND_NEIGHBOR_ADVERTISEMENT:
      HandleSixLowPanNA (packet, header.GetSourceAddress (), header.GetDestinationAddress (), interface);
      break;
    case Icmpv6Header::ICMPV6_ND_DUPLICATE_ADDRESS_CONFIRM:
      if (ipv6->IsForwarding (ipv6->GetInterfaceForDevice (sixDevice)))
        {
          HandleSixLowPanDAC (packet, header.GetSourceAddress (), header.GetDestinationAddress (), interface);
        }
      break;
    default:
      return Icmpv6L4Protocol::Receive (packet, header, interface);
      break;
  }

  return IpL4Protocol::RX_OK;
}

void SixLowPanNdProtocol::DoDispose ()
{
  NS_LOG_FUNCTION (this);

  for (SixLowPanCacheList::const_iterator it = m_sixlowCList.begin (); it != m_sixlowCList.end (); it++)
    {
      Ptr<SixLowPanNdiscCache> cache = *it;
      cache->Dispose ();
      cache = 0;
    }
  m_sixlowCList.clear ();

  Icmpv6L4Protocol::DoDispose ();
}

void SixLowPanNdProtocol::HandleSixLowPanNS (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                                             Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << src << dst << interface);

  Icmpv6NS nsHdr;
  packet->RemoveHeader (nsHdr);
  Ipv6Address target = nsHdr.GetIpv6Target ();

  Ptr<SixLowPanNetDevice> sixDevice = DynamicCast<SixLowPanNetDevice> (interface->GetDevice());
  NS_ASSERT_MSG (sixDevice != NULL, "SixLowPanNdProtocol cannot be installed on device different from SixLowPanNetDevice");

  Icmpv6OptionLinkLayerAddress llaHdr (1); /* SLLAO */
  Icmpv6OptionAddressRegistration aroHdr;

  bool next = true;
  bool hasLla = false;
  bool hasAro = false;

  if (src != Ipv6Address::GetAny ())
    {
      /* search all options following the NS header */
      while (next == true)
        {
          uint8_t type;
          packet->CopyData (&type, sizeof(type));

          switch (type)
          {
            case Icmpv6Header::ICMPV6_OPT_LINK_LAYER_SOURCE:
              if (!hasLla)
                {
                  packet->RemoveHeader (llaHdr);
                  hasLla = true;
                }
              break;
            case Icmpv6Header::ICMPV6_OPT_ADDRESS_REGISTRATION:
              if (!hasAro)
                {
                  packet->RemoveHeader (aroHdr);
                  hasAro = true;
                }
              break;
            default:
              /* unknow option, quit */
              next = false;
          }
        }

      if (!hasLla) /* error! */
        {
          NS_LOG_ERROR ("NS message MUST have source link layer option.");
          return;
        }
      else /* NS + SLLAO */
        {
          /* Update "ARPv6" table with information of src */
          Ptr<NdiscCache> cache = FindCache (sixDevice);

          NdiscCache::Entry* entry = 0;
          entry = cache->Lookup (src);

          if (!entry && src.IsLinkLocal())
            {
              entry = cache->Add (src);
              uint8_t buf[16];
              src.GetBytes (buf);
              Mac16Address address;
              address.CopyFrom (buf+14);
              entry->SetRouter (false);
              entry->SetMacAddress (llaHdr.GetAddress ());
              entry->MarkReachable ();
            }
          else if (!entry)
            {
              entry = cache->Add (src);
              entry->SetRouter (false);
              entry->MarkStale (llaHdr.GetAddress ());
            }
          else if (entry->GetMacAddress () != llaHdr.GetAddress ())
            {
              entry->MarkStale (llaHdr.GetAddress ());
            }
        }

      if (!hasAro) /* NS + SLLAO */
        {
          /* Send NA to src with information requested about target (in "ARPv6" table) */
          Ptr<NdiscCache> cache = FindCache (sixDevice);

          NdiscCache::Entry* entry = 0;
          entry = cache->Lookup (target);
          uint8_t flags;

          if (!entry)
            {
              NS_LOG_LOGIC ("No entry with address " << target);
              return;
            }
          else
            {
              if (entry->IsRouter ())
                {
                  flags = 7; /* R + S + O flag */
                }
              else
                {
                  flags = 3; /* S + O flags */
                }

              /* NA + TLLAO */
              Ptr<Packet> p = ForgeNA (interface->GetLinkLocalAddress ().GetAddress (), src, target,
                                       entry->GetMacAddress (), flags);
              Ipv6Header header;
              p->RemoveHeader (header);
              interface->Send (p, header, src);
            }
        }
      else /* NS + SLLAO + ARO */
        {
          /* Update NCE with information of src and ARO */
          Ptr<SixLowPanNdiscCache> nCache = FindSixLowPanCache (sixDevice);

          SixLowPanNdiscCache::SixLowPanEntry* nEntry = 0;
          nEntry = nCache->SixLowPanLookup (src);

          std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *> raCache = nCache->GetRaCache ();

          if (!nEntry) /* no entry, creating */
            {
              if (aroHdr.GetRegTime () != 0)
                {
                  nEntry = nCache->SixLowPanAdd (src);
                  nEntry->SetRouter (false);
                  nEntry->SetMacAddress (llaHdr.GetAddress ());
                  nEntry->SetEui64 (aroHdr.GetEui64 ());
                  nEntry->MarkReachable ();

                  if (m_multihopDad) /* multihop DAD used */
                    {
                      nEntry->MarkTentative ();
                      for (std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *>::iterator it = raCache.begin ();
                          it != raCache.end (); it++)
                        {
                          Ipv6Address destination = it->second->GetBorderAddress ();
                          SendSixLowPanDAR (interface->GetAddressMatchingDestination (destination).GetAddress (), destination,
                                            aroHdr.GetRegTime (), aroHdr.GetEui64 (), src);
                        }
                      return;
                    }
                  else  /* multihop DAD NOT used */
                    {
                      nEntry->MarkRegistered (aroHdr.GetRegTime ());
                      SendSixLowPanARO (interface->GetLinkLocalAddress ().GetAddress (), src, 0, aroHdr.GetRegTime (),
                                        aroHdr.GetEui64 ());
                      return;
                    }
                }
            }
          else if (nEntry->GetEui64 () == aroHdr.GetEui64 ()) /* entry found, same EUI-64, updating */
            {
              if (aroHdr.GetRegTime () != 0)
                {
                  nEntry->SetRouter (false);
                  nEntry->SetMacAddress (llaHdr.GetAddress ());
                  nEntry->MarkReachable ();
                  nEntry->MarkRegistered (aroHdr.GetRegTime ());
                  SendSixLowPanARO (interface->GetLinkLocalAddress ().GetAddress (), src, 0, aroHdr.GetRegTime (),
                                    aroHdr.GetEui64 ());

                  if (m_multihopDad)
                    {
                      for (std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *>::iterator it = raCache.begin ();
                          it != raCache.end (); it++)
                        {
                          Ipv6Address destination = it->second->GetBorderAddress ();

                          /* Send request to update entry from DAD table */
                          SendSixLowPanDAR (interface->GetAddressMatchingDestination (destination).GetAddress (), destination,
                                            aroHdr.GetRegTime (), aroHdr.GetEui64 (), src);
                        }
                    }

                  return;
                }
              else /* ARO's Registration Lifetime = 0 */
                {
                  if (m_multihopDad)
                    {
                      for (std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *>::iterator it = raCache.begin ();
                          it != raCache.end (); it++)
                        {
                          Ipv6Address destination = it->second->GetBorderAddress ();

                          /* Send request to remove entry from DAD table */
                          SendSixLowPanDAR (interface->GetAddressMatchingDestination (destination).GetAddress (), destination,
                                            aroHdr.GetRegTime (), aroHdr.GetEui64 (), src);
                        }
                    }
                  /* Remove the entry from Neighbor Cache */
                  nCache->SixLowPanRemove (nEntry);

                  /* Remove the entry from "ARPv6" table */
                  Ptr<NdiscCache> cache = FindCache (sixDevice);

                  NdiscCache::Entry* entry = 0;
                  entry = cache->Lookup (src);
                  cache->Remove (entry);
                  return;
                }
            }
          else /* entry found, different EUI-64 */
            {
              if (m_multihopDad && nEntry->IsRegistered ())
                {
                  SendSixLowPanARO (interface->GetLinkLocalAddress ().GetAddress (),
                                    sixDevice->MakeLinkLocalAddressFromMac (aroHdr.GetEui64 ()), 1,
                                    aroHdr.GetRegTime (), aroHdr.GetEui64 ());
                }
              else if (!m_multihopDad)
                {
                  SendSixLowPanARO (interface->GetLinkLocalAddress ().GetAddress (),
                                    sixDevice->MakeLinkLocalAddressFromMac (aroHdr.GetEui64 ()), 1,
                                    aroHdr.GetRegTime (), aroHdr.GetEui64 ());
                }
              return;
            }
        }
    }
  else
    {
      NS_LOG_ERROR ("An unspecified source address MUST NOT be used in NS messages.");
      return;
    }
}

void SixLowPanNdProtocol::HandleSixLowPanNA (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                                             Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << src << dst << interface);

  Ptr<Packet> p = packet->Copy ();
  Icmpv6NS naHdr;
  packet->RemoveHeader (naHdr);
  Ipv6Address target = naHdr.GetIpv6Target ();

  Icmpv6OptionLinkLayerAddress llaHdr (0); /* TLLAO */
  Icmpv6OptionAddressRegistration aroHdr;

  uint8_t type;
  packet->CopyData (&type, sizeof(type));

  switch (type)
  {
    case Icmpv6Header::ICMPV6_OPT_LINK_LAYER_TARGET: /* NA + TLLAO */

      HandleNA (p, target, dst, interface); /* Handle response of Address Resolution */

      break;
    case Icmpv6Header::ICMPV6_OPT_ADDRESS_REGISTRATION: /* NA + ARO */

      packet->RemoveHeader (aroHdr);

      m_aroRetransmit = 0;

      if (aroHdr.GetStatus () == 0) /* status=0, success! */
        {
          /* schedule a new ARO to maintain NCE in routers */

          Simulator::Schedule (Time (Minutes (aroHdr.GetRegTime () - m_advance)), &SixLowPanNdProtocol::RetransmitARO, this,
                               dst, src, aroHdr.GetRegTime (), aroHdr.GetEui64 (), interface->GetDevice ()->GetAddress ());
        }
      else /* status NOT 0, fail! */
        {
          NS_LOG_LOGIC ("ARO status is NOT 0, registration failed!");
          /// \todo implement method to remove address that generated error.
          return;
        }
      break;
    default:
      NS_LOG_ERROR ("NA message MUST have option.");
      return;
  }
}

void SixLowPanNdProtocol::HandleSixLowPanRS (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                                             Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << src << dst << interface);

  Ptr<SixLowPanNetDevice> sixDevice = DynamicCast<SixLowPanNetDevice> (interface->GetDevice());
  NS_ASSERT_MSG (sixDevice != NULL, "SixLowPanNdProtocol cannot be installed on device different from SixLowPanNetDevice");

  Icmpv6RS rsHeader;
  Icmpv6OptionLinkLayerAddress lla (1);

  packet->RemoveHeader (rsHeader);

  if (src != Ipv6Address::GetAny ())
    {
      uint8_t type;
      packet->CopyData (&type, sizeof(type));

      if (type != Icmpv6Header::ICMPV6_OPT_LINK_LAYER_SOURCE)
        {
          NS_LOG_ERROR ("RS message MUST have source link layer option.");
          return;
        }

      packet->RemoveHeader (lla);

      /* Update Neighbor Cache */
      Ptr<SixLowPanNdiscCache> sixCache = FindSixLowPanCache (sixDevice);
      SixLowPanNdiscCache::SixLowPanEntry* sixEntry = 0;
      sixEntry = sixCache->SixLowPanLookup (src);
      if (!sixEntry)
        {
          sixEntry = sixCache->SixLowPanAdd (src);
          sixEntry->SetRouter (false);
          sixEntry->MarkStale (lla.GetAddress ());
          sixEntry->MarkTentative ();
          NS_LOG_LOGIC ("Tentative entry created from RS");
        }
      else if (sixEntry->GetMacAddress () != lla.GetAddress ())
        {
          sixEntry->MarkStale (lla.GetAddress ());
        }

      /* Update "ARPv6" table */
      Ptr<NdiscCache> cache = FindCache (sixDevice);
      NdiscCache::Entry* entry = 0;
      entry = cache->Lookup (src);
      if (!entry)
        {
          entry = cache->Add (src);
          entry->SetRouter (false);
          entry->MarkStale (lla.GetAddress ());
        }
      else if (entry->GetMacAddress () != lla.GetAddress ())
        {
          entry->MarkStale (lla.GetAddress ());
        }
    }

  if (!m_border)
    {
      Address addr = lla.GetAddress ();
      Ipv6Address destination = sixDevice->MakeLinkLocalAddressFromMac(addr);

      SendSixLowPanRA (interface->GetLinkLocalAddress ().GetAddress (), destination, interface);
    }
}

void SixLowPanNdProtocol::HandleSixLowPanRA (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                                             Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << src << dst << interface);

  m_rsRetransmit = 0;
  m_receivedRA = true;

  Ptr<SixLowPanNetDevice> sixDevice = DynamicCast<SixLowPanNetDevice> (interface->GetDevice());
  NS_ASSERT_MSG (sixDevice != NULL, "SixLowPanNdProtocol cannot be installed on device different from SixLowPanNetDevice");

  Address addr = sixDevice->GetAddress ();

  Icmpv6RA raHeader;
  Ptr<Ipv6L3Protocol> ipv6 = GetNode ()->GetObject<Ipv6L3Protocol> ();

  Icmpv6OptionAuthoritativeBorderRouter abrHdr; /* ABRO */
  Icmpv6OptionLinkLayerAddress llaHdr (1); /* SLLAO */

  bool next = true;
  Ptr<SixLowPanNdiscCache> sixCache = FindSixLowPanCache (sixDevice);
  SixLowPanNdiscCache::SixLowPanRaEntry* ra = 0;

  Ptr<NdiscCache> cache = FindCache (sixDevice);
  // sgi::hash_map<Ipv6Address, NdiscCache::Entry *, Ipv6AddressHash> ndiscCache = cache->GetNdiscCache ();

  uint32_t version;
  Ipv6Address border;

  packet->RemoveHeader (raHeader);

  Ipv6Address defaultRouter = Ipv6Address::GetZero ();

  if (raHeader.GetLifeTime())
    {
      defaultRouter = src;
    }

  std::list<Icmpv6OptionPrefixInformation> prefixList;
  std::list<Icmpv6OptionSixLowPanContext> contextList;
  Icmpv6OptionPrefixInformation prefixHdr;
  Icmpv6OptionSixLowPanContext contextHdr;

  // \todo check the stop condiiton
  while (next == true)
    {
      uint8_t type = 0;
      packet->CopyData (&type, sizeof(type));

      switch (type)
      {
        case Icmpv6Header::ICMPV6_OPT_PREFIX:
          packet->RemoveHeader (prefixHdr);
          prefixList.push_back (prefixHdr);
          break;
        case Icmpv6Header::ICMPV6_OPT_SIXLOWPAN_CONTEXT:
          packet->RemoveHeader (contextHdr);
          contextList.push_back (contextHdr);
          break;
        case Icmpv6Header::ICMPV6_OPT_AUTHORITATIVE_BORDER_ROUTER:
          packet->RemoveHeader (abrHdr);
          version = abrHdr.GetVersion ();
          border = abrHdr.GetRouterAddress ();
          break;
        case Icmpv6Header::ICMPV6_OPT_LINK_LAYER_SOURCE:
          packet->RemoveHeader (llaHdr);
          ReceiveLLA (llaHdr, src, dst, interface); // generates an entry in NDISC table with m_router = true
          break;
        default:
          /* Unknown option, quit */
          next = false;
          break;
      }
    }

  ra = sixCache->RaEntryLookup (border);
  if (!ra) // Create a new entry
    {
      ra = sixCache->AddRaEntry (border);
      ra->SetManagedFlag (raHeader.GetFlagM ());
      ra->SetOtherConfigFlag (raHeader.GetFlagO ());
      ra->SetHomeAgentFlag (raHeader.GetFlagH ());
      ra->SetReachableTime (raHeader.GetReachableTime ());
      ra->SetRouterLifeTime (raHeader.GetLifeTime ());
      ra->SetRetransTimer (raHeader.GetRetransmissionTime ());
      ra->SetCurHopLimit (raHeader.GetCurHopLimit ());
      ra->SetVersion (version);
      ra->SetValidTime (abrHdr.GetValidTime ());

//      for (std::list<Icmpv6OptionPrefixInformation>::iterator it = prefixList.begin (); it != prefixList.end (); it++)
//        {
//          Ptr<SixLowPanPrefix> prefix = new SixLowPanPrefix;
//          prefix->SetPrefixLength ((*it).GetPrefixLength ());
//          prefix->SetFlags ((*it).GetFlags ());
//          prefix->SetValidLifeTime ((*it).GetValidTime ());
//          prefix->SetPreferredLifeTime ((*it).GetPreferredTime ());
//          prefix->SetPrefix ((*it).GetPrefix ());
//
//          ra->AddPrefix (prefix);
//
//          ipv6->AddAutoconfiguredAddress (ipv6->GetInterfaceForDevice (sixDevice),
//                                          (*it).GetPrefix (),(*it).GetPrefixLength (),
//                                          (*it).GetFlags (), (*it).GetValidTime (),
//                                          (*it).GetPreferredTime (), defaultRouter);
//
//          for (sgi::hash_map<Ipv6Address, NdiscCache::Entry *, Ipv6AddressHash>::iterator k = ndiscCache.begin ();
//              k != ndiscCache.end (); k++)
//            {
//              if (k->second->IsRouter ())
//                {
//                  SendSixLowPanARO (sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                    k->second->GetIpv6Address (), m_regTime, Mac64Address::ConvertFrom (addr),
//                                    addr);
//
//                  Simulator::Schedule (Time (Minutes (m_regTime - m_advance)), &SixLowPanNdProtocol::RetransmitARO, this,
//                                       sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                       k->second->GetIpv6Address (), m_regTime, Mac64Address::ConvertFrom (addr),
//                                       addr);
//                }
//            }
//        }
      // \todo quiet compiler
      NS_ASSERT (m_regTime);

      for (std::list<Icmpv6OptionSixLowPanContext>::iterator jt = contextList.begin (); jt != contextList.end (); jt++)
        {
          Ptr<SixLowPanContext> context = new SixLowPanContext;
          context->SetCid ((*jt).GetCid ());
          context->SetFlagC ((*jt).IsFlagC ());
          context->SetValidTime ((*jt).GetValidTime ());
          context->SetContextPrefix ((*jt).GetContextPrefix ());

          ra->AddContext (context);
        }
    }
  else if (ra && version > (ra->GetVersion ())) // Update existing entry from 6LBR with new information
    {
      ra->SetManagedFlag (raHeader.GetFlagM ());
      ra->SetOtherConfigFlag (raHeader.GetFlagO ());
      ra->SetHomeAgentFlag (raHeader.GetFlagH ());
      ra->SetReachableTime (raHeader.GetReachableTime ());
      ra->SetRouterLifeTime (raHeader.GetLifeTime ());
      ra->SetRetransTimer (raHeader.GetRetransmissionTime ());
      ra->SetCurHopLimit (raHeader.GetCurHopLimit ());
      ra->SetVersion (version);
      ra->SetValidTime (abrHdr.GetValidTime ());

      for (std::list<Icmpv6OptionPrefixInformation>::iterator it = prefixList.begin (); it != prefixList.end (); it++)
        {
          if (ra->GetPrefixes ().find ((*it).GetPrefix ()) == ra->GetPrefixes ().end ()) /* prefix NOT found */
            {
              Ptr<SixLowPanPrefix> prefix = new SixLowPanPrefix;
              prefix->SetPrefixLength ((*it).GetPrefixLength ());
              prefix->SetFlags ((*it).GetFlags ());
              prefix->SetValidLifeTime ((*it).GetValidTime ());
              prefix->SetPreferredLifeTime ((*it).GetPreferredTime ());
              prefix->SetPrefix ((*it).GetPrefix ());

              ra->AddPrefix (prefix);

              ipv6->AddAutoconfiguredAddress (ipv6->GetInterfaceForDevice (sixDevice),
                                              (*it).GetPrefix (), (*it).GetPrefixLength (),
                                              (*it).GetFlags (), (*it).GetValidTime (),
                                              (*it).GetPreferredTime (), defaultRouter);
//              for (sgi::hash_map<Ipv6Address, NdiscCache::Entry *, Ipv6AddressHash>::iterator kt = ndiscCache.begin ();
//                  kt != ndiscCache.end (); kt++)
//                {
//                  if (kt->second->IsRouter ())
//                    {
//                      SendSixLowPanARO (sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                        kt->second->GetIpv6Address (), m_regTime,
//                                        Mac64Address::ConvertFrom (addr), addr);
//
//                      Simulator::Schedule (Time (Minutes (m_regTime - m_advance)), &SixLowPanNdProtocol::RetransmitARO, this,
//                                           sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                           kt->second->GetIpv6Address (), m_regTime, Mac64Address::ConvertFrom (addr),
//                                           addr);
//                    }
//                }
            }
          else /* prefix found, updating! */
            {
              Ptr<SixLowPanPrefix> prefix = (ra->GetPrefixes().find((*it).GetPrefix ()))->second;

              prefix->SetPrefixLength ((*it).GetPrefixLength ());
              prefix->SetFlags ((*it).GetFlags ());
              prefix->SetValidLifeTime ((*it).GetValidTime ());
              prefix->SetPreferredLifeTime ((*it).GetPreferredTime ());

              ipv6->AddAutoconfiguredAddress (ipv6->GetInterfaceForDevice (sixDevice),
                                              (*it).GetPrefix (), (*it).GetPrefixLength (),
                                              (*it).GetFlags (), (*it).GetValidTime (),
                                              (*it).GetPreferredTime (), defaultRouter);
//              for (sgi::hash_map<Ipv6Address, NdiscCache::Entry *, Ipv6AddressHash>::iterator lt = ndiscCache.begin ();
//                  lt != ndiscCache.end (); lt++)
//                {
//                  if (lt->second->IsRouter ())
//                    {
//                      SendSixLowPanARO (sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                        lt->second->GetIpv6Address (), m_regTime, Mac64Address::ConvertFrom (addr),
//                                        addr);
//
//                      Simulator::Schedule (Time (Minutes (m_regTime - m_advance)), &SixLowPanNdProtocol::RetransmitARO, this,
//                                           sixDevice->MakeGlobalAddressFromMac(addr, (*it).GetPrefix ()),
//                                           lt->second->GetIpv6Address (), m_regTime, Mac64Address::ConvertFrom (addr),
//                                           addr);
//                    }
//                }
            }
        }

      for (std::list<Icmpv6OptionSixLowPanContext>::iterator jt = contextList.begin (); jt != contextList.end (); jt++)
        {
          if (ra->GetContexts ().find ((*jt).GetCid ()) == ra->GetContexts ().end ()) /* context NOT found */
            {
              Ptr<SixLowPanContext> context = new SixLowPanContext;
              context->SetCid ((*jt).GetCid ());
              context->SetFlagC ((*jt).IsFlagC ());
              context->SetValidTime ((*jt).GetValidTime ());
              context->SetContextPrefix ((*jt).GetContextPrefix ());

              ra->AddContext (context);
            }
          else
            {
              Ptr<SixLowPanContext> context = (ra->GetContexts ().find ((*jt).GetCid ()))->second;

              context->SetFlagC ((*jt).IsFlagC ());
              context->SetValidTime ((*jt).GetValidTime ());
              context->SetContextPrefix ((*jt).GetContextPrefix ());
            }
        }
    }
  else  // Old information, not updating
    {
      return;
    }

  uint32_t t = raHeader.GetLifeTime ();

  for (std::list<Icmpv6OptionPrefixInformation>::iterator it = prefixList.begin (); it != prefixList.end (); it++)
    {
      t = t < ((*it).GetValidTime ()) ? t : ((*it).GetValidTime ());
    }
  for (std::list<Icmpv6OptionSixLowPanContext>::iterator jt = contextList.begin (); jt != contextList.end (); jt++)
    {
      t = (60 * ((*jt).GetValidTime ())) < t ? (60 * ((*jt).GetValidTime ())) : t;
    }

  t -= (60 * m_advance);

  Simulator::Schedule (Time (Seconds (t - 1)), &SixLowPanNdProtocol::SetReceivedRA, this, false);
  Simulator::Schedule (Time (Seconds (t)), &SixLowPanNdProtocol::RetransmitRS, this,
                       interface->GetLinkLocalAddress ().GetAddress (), src, addr);
}
/// \todo da finire!! (controlla codice, controlla regTime)

void SixLowPanNdProtocol::HandleSixLowPanDAC (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                                              Ptr<Ipv6Interface> interface)
{
  NS_LOG_FUNCTION (this << packet << src << dst << interface);

  Ptr<SixLowPanNetDevice> sixDevice = DynamicCast<SixLowPanNetDevice> (interface->GetDevice());
  NS_ASSERT_MSG (sixDevice != NULL, "SixLowPanNdProtocol cannot be installed on device different from SixLowPanNetDevice");

  Icmpv6DuplicateAddress dacHdr (0);
  packet->RemoveHeader (dacHdr);

  if (m_multihopDad)
    {
      Ipv6Address reg = dacHdr.GetRegAddress ();

      if (!reg.IsMulticast () && src != Ipv6Address::GetAny () && !src.IsMulticast ())
        {
          Ptr<SixLowPanNdiscCache> cache = FindSixLowPanCache (sixDevice);
          SixLowPanNdiscCache::SixLowPanEntry* entry = 0;
          entry = cache->SixLowPanLookup (reg);

          if (dacHdr.GetStatus () == 0) /* mark the entry as registered, send ARO with status=0 */
            {
              entry->MarkRegistered (dacHdr.GetRegTime ());

              SendSixLowPanARO (dst, dacHdr.GetRegAddress (), dacHdr.GetStatus (), dacHdr.GetRegTime (),
                                dacHdr.GetEui64 ());
            }
          else /* remove the tentative entry, send ARO with error code */
            {
              cache->SixLowPanRemove (entry);

              Ipv6Address address = sixDevice->MakeLinkLocalAddressFromMac (dacHdr.GetEui64 ());

              SendSixLowPanARO (dst, address, dacHdr.GetStatus (), dacHdr.GetRegTime (), dacHdr.GetEui64 ());
            }
        }
      else
        {
          NS_LOG_ERROR ("Validity checks for DAR not satisfied.");
          return;
        }
    }
}

Ptr<SixLowPanNdiscCache> SixLowPanNdProtocol::FindSixLowPanCache (Ptr<NetDevice> device)
{
  NS_LOG_FUNCTION (this << device);

  for (SixLowPanCacheList::const_iterator it = m_sixlowCList.begin (); it != m_sixlowCList.end (); it++)
    {
      if ((*it)->GetDevice () == device)
        {
          return *it;
        }
    }

  /* quiet compiler */
  return 0;
}

void SixLowPanNdProtocol::RetransmitARO (Ipv6Address src, Ipv6Address dst, uint16_t time,
                                         Mac64Address eui, Address linkAddr)
{
  NS_LOG_FUNCTION (this << src << dst << time << eui << linkAddr);

  IntegerValue maxUnicastSolicit;
  GetAttribute ("MaxUnicastSolicit", maxUnicastSolicit);
  if (m_aroRetransmit < maxUnicastSolicit.Get ())
    {
      m_aroRetransmit++;

      SendSixLowPanARO (src, dst, time, eui, linkAddr);

      TimeValue retransmissionTime;
      GetAttribute ("RetransmissionTime", retransmissionTime);

      Simulator::Schedule (retransmissionTime.Get (), &SixLowPanNdProtocol::RetransmitARO, this,
                           src, dst, time, eui, linkAddr);
      return;
    }
  else
    {
      return;
    }
}

void SixLowPanNdProtocol::RetransmitRS (Ipv6Address src, Ipv6Address dst, Address linkAddr)
{
  NS_LOG_FUNCTION (this << src << dst << linkAddr);

  /* if the source is NOT unspec, send a RS message + SLLA option */
  if (src != Ipv6Address::GetAny ())
    {
      if (!m_receivedRA && m_rsRetransmit < MAX_RTR_SOLICITATIONS)
        {
          m_rsRetransmit++;

          SendRS (src, dst, linkAddr);

          Simulator::Schedule (Time (Seconds (RTR_SOLICITATION_INTERVAL)), &SixLowPanNdProtocol::RetransmitRS, this,
                               src, dst, linkAddr);
          return;
        }
      else if (!m_receivedRA)
        {
          m_rsRetransmit++;

          Ipv6Address destination = Ipv6Address::GetAllRoutersMulticast ();

          SendRS (src, destination, linkAddr);

          Simulator::Schedule (Time (Seconds (MAX_RTR_SOLICITATION_INTERVAL)), &SixLowPanNdProtocol::RetransmitRS, this,
                               src, destination, linkAddr);
          /* inserire truncated binary exponential backoff */
          return;
        }
      else
        {
          return;
        }
    }
  else
    {
      NS_LOG_ERROR ("An unspecified source address MUST NOT be used in RS messages.");
      return;
    }
}
/// \todo da finire!! (truncated binary exponential backoff)

void SixLowPanNdProtocol::SetReceivedRA (bool received)
{
  NS_LOG_FUNCTION (this << received);
  m_receivedRA = received;
}

} /* namespace ns3 */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#ifndef SIXLOWPAN_ND_PROTOCOL_H
#define SIXLOWPAN_ND_PROTOCOL_H

#include "ns3/ipv6-address.h"
#include "ns3/mac64-address.h"
#include "ns3/ip-l4-protocol.h"
#include "ns3/icmpv6-l4-protocol.h"

#include "sixlowpan-ndisc-cache.h"

namespace ns3 {

/**
 * \ingroup sixlowpan
 * \class SixLowPanNdProtocol
 * \brief An optimization of the ND protocol for 6LoWPANs.
 */
class SixLowPanNdProtocol : public Icmpv6L4Protocol
{
public:
  /**
   * \brief 6LBR constants : min context change delay.
   */
  static const uint16_t MIN_CONTEXT_CHANGE_DELAY;

  /**
   * \brief 6LR constants : max RA transmission.
   */
  static const uint8_t MAX_RTR_ADVERTISEMENTS;

  /**
   * \brief 6LR constants : min delay between RA.
   */
  static const uint8_t MIN_DELAY_BETWEEN_RAS;

  /**
   * \brief 6LR constants : max delay between RA.
   */
  static const uint8_t MAX_RA_DELAY_TIME;

  /**
   * \brief 6LR constants : tentative neighbor cache entry lifetime.
   */
  static const uint8_t TENTATIVE_NCE_LIFETIME;

  /**
   * \brief router constants : multihop hoplimit.
   */
  static const uint8_t MULTIHOP_HOPLIMIT;

  /**
   * \brief host constants : RS interval.
   */
  static const uint8_t RTR_SOLICITATION_INTERVAL;

  /**
   * \brief host constants : max RS transmission.
   */
  static const uint8_t MAX_RTR_SOLICITATIONS;

  /**
   * \brief host constants : max RS interval.
   */
  static const uint8_t MAX_RTR_SOLICITATION_INTERVAL;

  /**
   * \brief Constructor.
   */
  SixLowPanNdProtocol ();

  /**
   * \brief Destructor.
   */
  virtual ~SixLowPanNdProtocol ();

  /**
   * \brief Interface ID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Forge a Neighbor Advertisement.
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param target target IPv6 address
   * \param hardwareAddress our mac address
   * \param flags flags (bitfield => R (4), S (2), O (1))
   * \return NA packet (with IPv6 header)
   */
  Ptr<Packet> ForgeNA (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address hardwareAddress, uint8_t flags);

  /**
   * \brief Send a NS for 6LoWPAN ND (+ SLLAO).
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param target target IPv6 address
   * \param linkAddr link-layer address (SLLAO)
   */
  virtual void SendNS (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address linkAddr);

  /**
   * \brief Send a NS for 6LoWPAN ND (+ ARO, SLLAO).
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param time registration lifetime (ARO)
   * \param eui EUI-64 (ARO)
   * \param linkAddr link-layer address (SLLAO)
   */
  void SendSixLowPanARO (Ipv6Address src, Ipv6Address dst, uint16_t time, Mac64Address eui,
                         Address linkAddr);

  /**
   * \brief Send a NA for 6LoWPAN ND (+ ARO).
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param status status (ARO)
   * \param time registration lifetime (ARO)
   * \param eui EUI-64 (ARO)
   */
  void SendSixLowPanARO (Ipv6Address src, Ipv6Address dst, uint8_t status, uint16_t time,
                         Mac64Address eui);

  /**
   * \brief Send a RA for 6LoWPAN ND (+ PIO, 6CO, ABRO, SLLAO).
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param interface the interface from which the packet will be sent
   */
  void SendSixLowPanRA (Ipv6Address src, Ipv6Address dst, Ptr<Ipv6Interface> interface);

  /**
   * \brief Send a DAR for 6LoWPAN ND.
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param time registration lifetime
   * \param eui EUI-64
   * \param registered registered IPv6 address
   */
  void SendSixLowPanDAR (Ipv6Address src, Ipv6Address dst, uint16_t time, Mac64Address eui,
                      Ipv6Address registered);

  /**
   * \brief Receive method.
   * \param p the packet
   * \param header the IPv6 header
   * \param interface the interface from which the packet is coming
   * \returns the receive status
   */
  virtual enum IpL4Protocol::RxStatus Receive (Ptr<Packet> p,
                                               Ipv6Header const &header,
                                               Ptr<Ipv6Interface> interface);

  /**
   * \brief Get the cache corresponding to the device.
   * \param device the device
   * \returns the SixLowPanNdiscCache associated with the device
   */
  Ptr<SixLowPanNdiscCache> FindSixLowPanCache (Ptr<NetDevice> device);

  /**
   * \brief Function called to send NS + ARO + SLLAO.
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param time registration lifetime (ARO)
   * \param eui EUI-64 (ARO)
   * \param linkAddr link-layer address (SLLAO)
   */
  void RetransmitARO (Ipv6Address src, Ipv6Address dst, uint16_t time, Mac64Address eui,
                      Address linkAddr);

  /**
   * \brief Function called to send RS + SLLAO.
   * \param src source IPv6 address
   * \param dst destination IPv6 address
   * \param linkAddress link-layer address (SLLAO)
   */
  void RetransmitRS (Ipv6Address src, Ipv6Address dst, Address linkAddr);

protected:
  /**
   * \brief Dispose this object.
   */
  virtual void DoDispose ();

private:
  typedef std::list<Ptr<SixLowPanNdiscCache> > SixLowPanCacheList; //!< container of SixLowPanNdiscCaches

  /**
   * \brief A list of cache by device.
   */
  SixLowPanCacheList m_sixlowCList;

  /**
   * \brief Use multihop DAD mechanism
   */
  bool m_multihopDad;

  /**
   * \brief Number of RS retransmission.
   */
  uint8_t m_rsRetransmit;

  /**
   * \brief Is an RA received.
   */
  bool m_receivedRA;

  /**
   * \brief Number of NS + ARO + SLLAO retransmission.
   */
  uint8_t m_aroRetransmit;

  /**
   * \brief The amount of time (units of 60 seconds) that the router should retain the NCE for the node.
   */
  uint16_t m_regTime;

  /**
   * \brief The advance to perform maintaining of RA's information and registration.
   */
  uint16_t m_advance;

  /**
   * \brief Is a 6LoWPAN Border router.
   */
  bool m_border;

  /**
   * \brief Receive NS for 6LoWPAN ND method.
   * \param p the packet
   * \param src source address
   * \param dst destination address
   * \param interface the interface from which the packet is coming
   */
  void HandleSixLowPanNS (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                       Ptr<Ipv6Interface> interface);

  /**
   * \brief Receive NA for 6LoWPAN ND method.
   * \param p the packet
   * \param src source address
   * \param dst destination address
   * \param interface the interface from which the packet is coming
   */
  void HandleSixLowPanNA (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                       Ptr<Ipv6Interface> interface);

  /**
   * \brief Receive RS for 6LoWPAN ND method.
   * \param p the packet
   * \param src source address
   * \param dst destination address
   * \param interface the interface from which the packet is coming
   */
  void HandleSixLowPanRS (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                       Ptr<Ipv6Interface> interface);

  /**
   * \brief Receive RA for 6LoWPAN ND method.
   * \param p the packet
   * \param src source address
   * \param dst destination address
   * \param interface the interface from which the packet is coming
   */
  void HandleSixLowPanRA (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                       Ptr<Ipv6Interface> interface);

  /**
   * \brief Receive DAC for 6LoWPAN ND method.
   * \param p the packet
   * \param src source address
   * \param dst destination address
   * \param interface the interface from which the packet is coming
   */
  void HandleSixLowPanDAC (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst,
                        Ptr<Ipv6Interface> interface);

  /**
   * \brief Set the m_receivedRA flag.
   * \param received value
   */
  void SetReceivedRA (bool received);
};

} /* namespace ns3 */

#endif




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#include "ns3/log.h"
#include "ns3/uinteger.h"
#include "ns3/names.h"
#include "ns3/ipv6-address.h"
#include "ns3/mac64-address.h"

#include "sixlowpan-ndisc-cache.h"
#include "sixlowpan-nd-protocol.h"
#include "sixlowpan-ndisc-ra-options.h"

namespace ns3
{

NS_LOG_COMPONENT_DEFINE ("SixLowPanNdiscCache");

NS_OBJECT_ENSURE_REGISTERED (SixLowPanNdiscCache);

TypeId SixLowPanNdiscCache::GetTypeId ()
{
  static TypeId tid = TypeId ("ns3::SixLowPanNdiscCache")
    .SetParent<NdiscCache> ()
    .SetGroupName ("SixLowPan")
  ;
  return tid;
}

SixLowPanNdiscCache::SixLowPanNdiscCache ()
{
  NS_LOG_FUNCTION_NOARGS ();
}

SixLowPanNdiscCache::~SixLowPanNdiscCache ()
{
  NS_LOG_FUNCTION_NOARGS ();
  Flush ();
}

void SixLowPanNdiscCache::DoDispose ()
{
  NS_LOG_FUNCTION_NOARGS ();

  Flush ();
  FlushRaCache ();
  NdiscCache::DoDispose();
}

SixLowPanNdiscCache::SixLowPanEntry* SixLowPanNdiscCache::SixLowPanLookup (Ipv6Address dst)
{
  NS_LOG_FUNCTION (this << dst);
  SixLowPanNdiscCache::SixLowPanEntry* entry;

  if (m_sixlowNdCache.find (dst) != m_sixlowNdCache.end ())
    {
      entry = m_sixlowNdCache[dst];
    }
  else
    {
      entry = 0;
    }
  return entry;
}

SixLowPanNdiscCache::SixLowPanEntry* SixLowPanNdiscCache::SixLowPanAdd (Ipv6Address to)
{
  NS_LOG_FUNCTION (this << to);
  NS_ASSERT (m_sixlowNdCache.find (to) == m_sixlowNdCache.end ());

  SixLowPanNdiscCache::SixLowPanEntry* entry = new SixLowPanNdiscCache::SixLowPanEntry (this);
  entry->SetIpv6Address (to);
  m_sixlowNdCache[to] = entry;
  return entry;
}

void SixLowPanNdiscCache::SixLowPanRemove (SixLowPanNdiscCache::SixLowPanEntry* entry)
{
  NS_LOG_FUNCTION_NOARGS ();

  for (SixLowPanCacheI i = m_sixlowNdCache.begin (); i != m_sixlowNdCache.end (); i++)
    {
      if ((*i).second == entry)
        {
          m_sixlowNdCache.erase (i);
          entry->ClearWaitingPacket ();
          delete entry;
          return;
        }
    }
}

void SixLowPanNdiscCache::Flush ()
{
  NS_LOG_FUNCTION_NOARGS ();

  for (SixLowPanCacheI i = m_sixlowNdCache.begin (); i != m_sixlowNdCache.end (); i++)
    {
      delete (*i).second;
    }

  m_sixlowNdCache.erase (m_sixlowNdCache.begin (), m_sixlowNdCache.end ());
}

void SixLowPanNdiscCache::PrintNdiscCache (Ptr<OutputStreamWrapper> stream)
{
  NS_LOG_FUNCTION (this << stream);
  std::ostream* os = stream->GetStream ();

  for (SixLowPanCacheI i = m_sixlowNdCache.begin (); i != m_sixlowNdCache.end (); i++)
    {
      *os << i->first << " dev ";
      std::string found = Names::FindName (GetDevice ());
      if (Names::FindName (GetDevice ()) != "")
        {
          *os << found;
        }
      else
        {
          *os << static_cast<int> (GetDevice ()->GetIfIndex ());
        }

      *os << " lladdr " << i->second->GetMacAddress ();

      if (i->second->IsReachable ())
        {
          *os << " REACHABLE ";
        }
      else if (i->second->IsDelay ())
        {
          *os << " DELAY ";
        }
      else if (i->second->IsIncomplete ())
        {
          *os << " INCOMPLETE ";
        }
      else if (i->second->IsProbe ())
        {
          *os << " PROBE ";
        }
      else
        {
          *os << " STALE ";
        }

      if (i->second->IsRegistered ())
        {
          *os << " REGISTERED\n";
        }
      else if (i->second->IsTentative ())
        {
          *os << " TENTATIVE\n";
        }
      else
        {
          *os << " GARBAGE\n";
        }
    }
}

SixLowPanNdiscCache::SixLowPanEntry::SixLowPanEntry (NdiscCache* nd)
  : NdiscCache::Entry::Entry (nd),
    m_registeredTimer (Timer::CANCEL_ON_DESTROY),
	  m_tentativeTimer (Timer::CANCEL_ON_DESTROY)
{
  NS_LOG_FUNCTION_NOARGS ();
}

void SixLowPanNdiscCache::SixLowPanEntry::MarkRegistered (uint16_t time)
{
  NS_LOG_FUNCTION_NOARGS ();
  m_type = REGISTERED;

  if (m_registeredTimer.IsRunning ())
    {
      m_registeredTimer.Cancel ();
    }
  m_registeredTimer.SetFunction (&SixLowPanNdiscCache::SixLowPanEntry::FunctionTimeout, this);
  m_registeredTimer.SetDelay (Minutes (time));
  m_registeredTimer.Schedule ();
}

void SixLowPanNdiscCache::SixLowPanEntry::MarkTentative ()
{
  NS_LOG_FUNCTION_NOARGS ();
  m_type = TENTATIVE;

  if (m_tentativeTimer.IsRunning ())
    {
      m_tentativeTimer.Cancel ();
    }
  m_tentativeTimer.SetFunction (&SixLowPanNdiscCache::SixLowPanEntry::FunctionTimeout, this);
  m_tentativeTimer.SetDelay (Seconds (SixLowPanNdProtocol::TENTATIVE_NCE_LIFETIME));
  m_tentativeTimer.Schedule ();
}

void SixLowPanNdiscCache::SixLowPanEntry::MarkGarbage ()
{
  NS_LOG_FUNCTION_NOARGS ();
  m_type = GARBAGE;
}

bool SixLowPanNdiscCache::SixLowPanEntry::IsRegistered () const
{
  NS_LOG_FUNCTION_NOARGS ();
  return (m_type == REGISTERED);
}

bool SixLowPanNdiscCache::SixLowPanEntry::IsTentative () const
{
  NS_LOG_FUNCTION_NOARGS ();
  return (m_type == TENTATIVE);
}

bool SixLowPanNdiscCache::SixLowPanEntry::IsGarbage () const
{
  NS_LOG_FUNCTION_NOARGS ();
  return (m_type == GARBAGE);
}

void SixLowPanNdiscCache::SixLowPanEntry::FunctionTimeout ()
{
  NS_LOG_FUNCTION_NOARGS ();

  m_ndCache->Remove (this);
  return;
}

Mac64Address SixLowPanNdiscCache::SixLowPanEntry::GetEui64 () const
{
  NS_LOG_FUNCTION (this);
  return m_eui64;
}

void SixLowPanNdiscCache::SixLowPanEntry::SetEui64 (Mac64Address eui)
{
  NS_LOG_FUNCTION (this << eui);
  m_eui64 = eui;
}

SixLowPanNdiscCache::SixLowPanRaEntry* SixLowPanNdiscCache::RaEntryLookup (Ipv6Address border)
{
  NS_LOG_FUNCTION (this << border);
  SixLowPanNdiscCache::SixLowPanRaEntry* entry = 0;

  if (m_raCache.find (border) != m_raCache.end ())
    {
      entry = m_raCache[border];
    }
  return entry;
}

SixLowPanNdiscCache::SixLowPanRaEntry* SixLowPanNdiscCache::AddRaEntry (Ipv6Address border)
{
  NS_LOG_FUNCTION (this << border);
  NS_ASSERT (m_raCache.find (border) == m_raCache.end ());

  SixLowPanNdiscCache::SixLowPanRaEntry* entry = new SixLowPanNdiscCache::SixLowPanRaEntry (this);
  entry->SetBorderAddress (border);
  m_raCache[border] = entry;
  return entry;
}

void SixLowPanNdiscCache::RemoveRaEntry (SixLowPanNdiscCache::SixLowPanRaEntry* entry)
{
  NS_LOG_FUNCTION_NOARGS ();

  for (SixLowPanRaCacheI it = m_raCache.begin (); it != m_raCache.end (); it++)
    {
      if ((*it).second == entry)
        {
          m_raCache.erase (it);
          delete entry;
          return;
        }
    }
}

void SixLowPanNdiscCache::FlushRaCache ()
{
  NS_LOG_FUNCTION_NOARGS ();

  for (SixLowPanRaCacheI it = m_raCache.begin (); it != m_raCache.end (); it++)
    {
      delete (*it).second;
    }

  m_raCache.erase (m_raCache.begin (), m_raCache.end ());
}

void SixLowPanNdiscCache::PrintRaCache (Ptr<OutputStreamWrapper> stream)
{
  NS_LOG_FUNCTION (this << stream);
  std::ostream* os = stream->GetStream ();

  for (SixLowPanRaCacheI it = m_raCache.begin (); it != m_raCache.end (); it++)
    {
      *os << it->first << " RA ";

      *os << " Cur Hop Limit: " << it->second->GetCurHopLimit ();

      if (it->second->IsManagedFlag ())
        {
          *os << " M flag: true ";
        }
      else
        {
          *os << " M flag: false ";
        }
      if (it->second->IsOtherConfigFlag ())
        {
          *os << " O flag: true ";
        }
      else
        {
          *os << " O flag: false ";
        }

      *os << " Router Lifetime: " << it->second->GetRouterLifeTime ();
      *os << " Reachable Time: " << it->second->GetReachableTime ();
      *os << " Retrans Timer: " << it->second->GetRetransTimer ();
      *os << " (ABRO) Version: " << it->second->GetVersion ();
      *os << " (ABRO) Valid Lifetime: " << it->second->GetValidTime ();
      *os << " (ABRO) Border Router address: " << it->second->GetBorderAddress ();

      std::map<Ipv6Address, Ptr<SixLowPanPrefix> > prefixes = it->second->GetPrefixes ();
      for (std::map<Ipv6Address, Ptr<SixLowPanPrefix> >::iterator jt = prefixes.begin (); jt != prefixes.end (); jt++)
        {
          jt->second->PrintPrefix (stream);
        }
      std::map<uint8_t, Ptr<SixLowPanContext> > contexts = it->second->GetContexts ();
      for (std::map<uint8_t, Ptr<SixLowPanContext> >::iterator i = contexts.begin (); i != contexts.end (); i++)
        {
          i->second->PrintContext (stream);
        }
    }
}

std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *> SixLowPanNdiscCache::GetRaCache () const
{
  NS_LOG_FUNCTION (this);
  return m_raCache;
}

SixLowPanNdiscCache::SixLowPanRaEntry::SixLowPanRaEntry (SixLowPanNdiscCache* nd)
  //: m_cache (nd)
{
  NS_LOG_FUNCTION (this);
}

SixLowPanNdiscCache::SixLowPanRaEntry::~SixLowPanRaEntry ()
{
  NS_LOG_FUNCTION (this);
}

void SixLowPanNdiscCache::SixLowPanRaEntry::AddPrefix (Ptr<SixLowPanPrefix> prefix)
{
  NS_LOG_FUNCTION (this << prefix);
  m_prefixes.insert (std::pair<Ipv6Address, Ptr<SixLowPanPrefix> > (prefix->GetPrefix (), prefix));
}

void SixLowPanNdiscCache::SixLowPanRaEntry::RemovePrefix (Ptr<SixLowPanPrefix> prefix)
{
  NS_LOG_FUNCTION_NOARGS ();

  for (std::map<Ipv6Address, Ptr<SixLowPanPrefix> >::iterator it = m_prefixes.begin (); it != m_prefixes.end (); it++)
    {
      if (it->second == prefix)
        {
          m_prefixes.erase (it);
          return;
        }
    }
}

std::map<Ipv6Address, Ptr<SixLowPanPrefix> > SixLowPanNdiscCache::SixLowPanRaEntry::GetPrefixes () const
{
  NS_LOG_FUNCTION (this);
  return m_prefixes;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::AddContext (Ptr<SixLowPanContext> context)
{
  NS_LOG_FUNCTION (this << context);
  m_contexts.insert (std::pair<uint8_t, Ptr<SixLowPanContext> > (context->GetCid (), context));
}

void SixLowPanNdiscCache::SixLowPanRaEntry::RemoveContext (Ptr<SixLowPanContext> context)
{
  NS_LOG_FUNCTION_NOARGS ();

  for (std::map<uint8_t, Ptr<SixLowPanContext> >::iterator it = m_contexts.begin (); it != m_contexts.end (); it++)
    {
      if (it->second == context)
        {
          m_contexts.erase (it);
          return;
        }
    }
}

std::map<uint8_t, Ptr<SixLowPanContext> > SixLowPanNdiscCache::SixLowPanRaEntry::GetContexts () const
{
  NS_LOG_FUNCTION (this);
  return m_contexts;
}

bool SixLowPanNdiscCache::SixLowPanRaEntry::IsManagedFlag () const
{
  NS_LOG_FUNCTION (this);
  return m_managedFlag;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetManagedFlag (bool managedFlag)
{
  NS_LOG_FUNCTION (this << managedFlag);
  m_managedFlag = managedFlag;
}

bool SixLowPanNdiscCache::SixLowPanRaEntry::IsOtherConfigFlag () const
{
  NS_LOG_FUNCTION (this);
  return m_otherConfigFlag;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetOtherConfigFlag (bool otherConfigFlag)
{
  NS_LOG_FUNCTION (this << otherConfigFlag);
  m_otherConfigFlag = otherConfigFlag;
}

bool SixLowPanNdiscCache::SixLowPanRaEntry::IsHomeAgentFlag () const
{
  NS_LOG_FUNCTION (this);
  return m_homeAgentFlag;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetHomeAgentFlag (bool homeAgentFlag)
{
  NS_LOG_FUNCTION (this << homeAgentFlag);
  m_homeAgentFlag = homeAgentFlag;
}

uint32_t SixLowPanNdiscCache::SixLowPanRaEntry::GetReachableTime () const
{
  NS_LOG_FUNCTION (this);
  return m_reachableTime;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetReachableTime (uint32_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_reachableTime = time;
}

uint32_t SixLowPanNdiscCache::SixLowPanRaEntry::GetRouterLifeTime () const
{
  NS_LOG_FUNCTION (this);
  return m_routerLifeTime;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetRouterLifeTime (uint32_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_routerLifeTime = time;
}

uint32_t SixLowPanNdiscCache::SixLowPanRaEntry::GetRetransTimer () const
{
  NS_LOG_FUNCTION (this);
  return m_retransTimer;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetRetransTimer (uint32_t timer)
{
  NS_LOG_FUNCTION (this << timer);
  m_retransTimer = timer;
}

uint8_t SixLowPanNdiscCache::SixLowPanRaEntry::GetCurHopLimit () const
{
  NS_LOG_FUNCTION (this);
  return m_curHopLimit;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetCurHopLimit (uint8_t curHopLimit)
{
  NS_LOG_FUNCTION (this << curHopLimit);
  m_curHopLimit = curHopLimit;
}

uint32_t SixLowPanNdiscCache::SixLowPanRaEntry::GetVersion () const
{
  NS_LOG_FUNCTION (this);
  return m_version;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetVersion (uint32_t version)
{
  NS_LOG_FUNCTION (this << version);
  m_version = version;
}

uint16_t SixLowPanNdiscCache::SixLowPanRaEntry::GetValidTime () const
{
  NS_LOG_FUNCTION (this);
  return m_validTime;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetValidTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_validTime = time;
}

Ipv6Address SixLowPanNdiscCache::SixLowPanRaEntry::GetBorderAddress () const
{
  NS_LOG_FUNCTION (this);
  return m_border;
}

void SixLowPanNdiscCache::SixLowPanRaEntry::SetBorderAddress (Ipv6Address border)
{
  NS_LOG_FUNCTION (this << border);
  m_border = border;
}

} /* namespace ns3 */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#ifndef SIXLOW_NDISC_CACHE_H
#define SIXLOW_NDISC_CACHE_H

#include "ns3/ipv6-address.h"
#include "ns3/mac64-address.h"
#include "ns3/ptr.h"
#include "ns3/timer.h"
#include "ns3/sgi-hashmap.h"
#include "ns3/output-stream-wrapper.h"
#include "ns3/ndisc-cache.h"

// #include "sixlow-ndisc-ra-options.h"

namespace ns3
{

class SixLowPanPrefix;
class SixLowPanContext;

/**
 * \infroup sixlowpan
 * \class SixLowPanNdiscCache
 * \brief Neighbor Discovery cache for 6LoWPAN ND. Keeps also RAs, prefixes and contexts.
 */
class SixLowPanNdiscCache : public NdiscCache
{
public:
  class SixLowPanEntry;

  class SixLowPanRaEntry;

  /**
   * \brief Get the type ID
   * \return type ID
   */
  static TypeId GetTypeId ();

  /**
   * \brief Constructor.
   */
  SixLowPanNdiscCache ();

  /**
   * \brief Destructor.
   */
  ~SixLowPanNdiscCache ();

  /**
   * \brief Lookup in the cache.
   * \param dst destination address
   * \return the entry if found, 0 otherwise
   */
  SixLowPanNdiscCache::SixLowPanEntry* SixLowPanLookup (Ipv6Address dst);

  /**
   * \brief Add an entry.
   * \param to address to add
   * \return an new Entry
   */
  SixLowPanNdiscCache::SixLowPanEntry* SixLowPanAdd (Ipv6Address to);

  /**
   * \brief Delete an entry.
   * \param entry pointer to delete from the list.
   */
  void SixLowPanRemove (SixLowPanNdiscCache::SixLowPanEntry* entry);

  /**
   * \brief Flush the cache.
   */
  virtual void Flush ();

  /**
   * \brief Print the SixLowPanNdisc cache entries
   *
   * \param stream the ostream the SixLowPanNdisc cache entries is printed to
   */
  virtual void PrintNdiscCache (Ptr<OutputStreamWrapper> stream);

  /**
   * \class SixLowPanEntry
   * \brief A record that holds information about an SixLowPanNdiscCache entry.
   */
  class SixLowPanEntry : public NdiscCache::Entry
  {
  public:
    /**
     * \brief Constructor.
     * \param nd The NdiscCache this entry belongs to.
     */
    SixLowPanEntry (NdiscCache* nd);

    /**
     * \brief Changes the state to this entry to REGISTERED.
     * It starts the registered timer.
     * \param time the lifetime in units of 60 seconds (from ARO)
     */
    void MarkRegistered (uint16_t time);

    /**
     * \brief Changes the state to this entry to TENTATIVE.
     * It starts the tentative timer (20 seconds).
     */
    void MarkTentative ();

    /**
     * \brief Change the state to this entry to GARBAGE.
     */
    void MarkGarbage ();

    /**
     * \brief Is the entry REGISTERED.
     * \return true if the type of entry is REGISTERED, false otherwise
     */
    bool IsRegistered () const;

    /**
     * \brief Is the entry TENTATIVE.
     * \return true if the type of entry is TENTATIVE, false otherwise
     */
    bool IsTentative () const;

    /**
     * \brief Is the entry GARBAGE-COLLECTIBLE.
     * \return true if the type of entry GARBAGE-COLLECTIBLE, false otherwise
     */
    bool IsGarbage () const;

    /**
     * \brief Function called when timer timeout.
     */
    void FunctionTimeout ();

    /**
     * \brief Get the EUI-64 of this entry.
     * \return EUI-64 value
     */
    Mac64Address GetEui64 () const;

    /**
     * \brief Set the EUI-64.
     * \param eui the EUI-64 value
     */
    void SetEui64 (Mac64Address eui);

  private:
    /**
     * \brief The SixLowPanEntry type enumeration.
     */
    enum SixLowPanNdiscCacheEntryType_e
    {
      REGISTERED, /**< Have an explicit registered lifetime */
      TENTATIVE, /**< Have a short lifetime, typically get converted to REGISTERED */
      GARBAGE /**< Allow for garbage collection when low on memory */
    };

    /**
     * \brief The EUI-64 value.
     */
    Mac64Address m_eui64;

    /**
     * \brief The state of the entry.
     */
    SixLowPanNdiscCacheEntryType_e m_type;

    /**
     * \brief Timer (used for REGISTERED entries).
     */
    Timer m_registeredTimer;

    /**
     * \brief Timer (used for TENTATIVE entries).
     */
    Timer m_tentativeTimer;
  };

  /**
   * \brief Lookup in the RA cache.
   * \param border the Border Router address
   * \return the entry if found, 0 otherwise
   */
  SixLowPanNdiscCache::SixLowPanRaEntry* RaEntryLookup (Ipv6Address border);

  /**
   * \brief Add an entry to the RA cache.
   * \param border the Border Router address
   * \return a new SixLowPanContext
   */
  SixLowPanNdiscCache::SixLowPanRaEntry* AddRaEntry (Ipv6Address border);

  /**
   * \brief Delete an entry from the RA cache.
   * \param entry pointer to delete from the list.
   */
  void RemoveRaEntry (SixLowPanNdiscCache::SixLowPanRaEntry* entry);

  /**
   * \brief Flush the RA cache.
   */
  void FlushRaCache ();

  /**
   * \brief Print the RA cache entries
   *
   * \param stream the ostream the RA cache entries is printed to
   */
  void PrintRaCache (Ptr<OutputStreamWrapper> stream);

  /**
   * \brief Get list of RA received.
   * \return list of RA
   */
  std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *> GetRaCache () const;

  /**
   * \class SixLowPanRaEntry
   * \brief RA advertised from routers for 6LoWPAN ND.
   */
  class SixLowPanRaEntry
  {
  public:
    /**
     * \brief Constructor.
     * \param nd The NdiscCache this ra entry belongs to.
     */
    SixLowPanRaEntry (SixLowPanNdiscCache* nd);

    /**
     * \brief Destructor.
     */
    ~SixLowPanRaEntry ();

    /**
     * \brief Get list of prefixes advertised for this interface.
     * \return list of IPv6 prefixes
     */
    std::map<Ipv6Address, Ptr<SixLowPanPrefix> > GetPrefixes () const;

    /**
     * \brief Add a prefix to advertise on interface.
     * \param prefix prefix to advertise
     */
    void AddPrefix (Ptr<SixLowPanPrefix> prefix);

    /**
     * \brief Remove a prefix.
     * \param prefix prefix to remove
     */
    void RemovePrefix (Ptr<SixLowPanPrefix> prefix);

    /**
     * \brief Get list of 6LoWPAN contexts advertised for this interface.
     * \return list of 6LoWPAN contexts
     */
    std::map<uint8_t, Ptr<SixLowPanContext> > GetContexts () const;

    /**
     * \brief Add a 6LoWPAN context to advertise on interface.
     * \param context 6LoWPAN context to advertise
     */
    void AddContext (Ptr<SixLowPanContext> context);

    /**
     * \brief Remove a 6LoWPAN context.
     * \param context 6LoWPAN context to remove
     */
    void RemoveContext (Ptr<SixLowPanContext> context);

    /**
     * \brief Is managed flag enabled ?
     * \return managed flag
     */
    bool IsManagedFlag () const;

    /**
     * \brief Set managed flag
     * \param managedFlag value
     */
    void SetManagedFlag (bool managedFlag);

    /**
     * \brief Is "other config" flag enabled ?
     * \return other config flag
     */
    bool IsOtherConfigFlag () const;

    /**
     * \brief Is "home agent" flag enabled ?
     * \return "home agent" flag
     */
    bool IsHomeAgentFlag () const;

    /**
     * \brief Set "home agent" flag.
     * \param homeAgentFlag value
     */
    void SetHomeAgentFlag (bool homeAgentFlag);

    /**
     * \brief Set "other config" flag
     * \param otherConfigFlag value
     */
    void SetOtherConfigFlag (bool otherConfigFlag);

    /**
     * \brief Get reachable time.
     * \return reachable time
     */
    uint32_t GetReachableTime () const;

    /**
     * \brief Set reachable time.
     * \param time reachable time
     */
    void SetReachableTime (uint32_t itme);

    /**
     * \brief Get router lifetime.
     * \return router lifetime
     */
    uint32_t GetRouterLifeTime () const;

    /**
     * \brief Set router lifetime.
     * \param time router lifetime
     */
    void SetRouterLifeTime (uint32_t time);

    /**
     * \brief Get retransmission timer.
     * \return retransmission timer
     */
    uint32_t GetRetransTimer () const;

    /**
     * \brief Set retransmission timer.
     * \param timer retransmission timer
     */
    void SetRetransTimer (uint32_t timer);

    /**
     * \brief Get current hop limit.
     * \return current hop limit for the link
     */
    uint8_t GetCurHopLimit () const;

    /**
     * \brief Set current hop limit.
     * \param curHopLimit current hop limit for the link
     */
    void SetCurHopLimit (uint8_t curHopLimit);

    /**
     * \brief Get version value (ABRO).
     * \return the version value
     */
    uint32_t GetVersion () const;

    /**
     * \brief Set version value (ABRO).
     * \param version the version value
     */
    void SetVersion (uint32_t version);

    /**
     * \brief Get valid lifetime value (ABRO).
     * \return the valid lifetime (units of 60 seconds)
     */
    uint16_t GetValidTime () const;

    /**
     * \brief Set valid lifetime value (ABRO).
     * \param time the valid lifetime (units of 60 seconds)
     */
    void SetValidTime (uint16_t time);

    /**
     * \brief Get Border Router address (ABRO).
     * \return the Border Router address
     */
    Ipv6Address GetBorderAddress () const;

    /**
     * \brief Set Border Router address (ABRO).
     * \param border the Border Router address
     */
    void SetBorderAddress (Ipv6Address border);

  private:
    /**
     * \brief List of prefixes advertised.
     */
    std::map<Ipv6Address, Ptr<SixLowPanPrefix> > m_prefixes;

    /**
     * \brief List of 6LoWPAN contexts advertised.
     */
    std::map<uint8_t, Ptr<SixLowPanContext> > m_contexts;

    /**
     * \brief Managed flag. If true host use the stateful protocol for address autoconfiguration.
     */
    bool m_managedFlag;

    /**
     * \brief Other configuration flag. If true host use stateful protocol for other (non-address) information.
     */
    bool m_otherConfigFlag;

    /**
     * \brief Flag to add HA (home agent) flag in RA.
     */
    bool m_homeAgentFlag;

    /**
     * \brief Reachable time in milliseconds.
     */
    uint32_t m_reachableTime;

    /**
     * \brief Retransmission timer in milliseconds.
     */
    uint32_t m_retransTimer;

    /**
     * \brief Current hop limit (TTL).
     */
    uint32_t m_curHopLimit;

    /**
     * \brief Router life time in seconds.
     */
    uint32_t m_routerLifeTime;

    /**
     * \brief Version value for ABRO.
     */
    uint32_t m_version;

    /**
     * \brief Valid lifetime value for ABRO (units of 60 seconds).
     */
    uint16_t m_validTime;

    /**
     * \brief Border Router address for ABRO.
     */
    Ipv6Address m_border;
  };

  protected:
  /**
   * \brief Dispose this object.
   */
  virtual void DoDispose ();

  private:
  /**
   * \brief RA entry container
   */
  typedef std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *> SixLowPanRaCache;

  /**
   * \brief RA entry container iterator
   */
  typedef std::map<Ipv6Address, SixLowPanNdiscCache::SixLowPanRaEntry *>::iterator SixLowPanRaCacheI;

  /**
   * \brief A list of RA entry.
   */
  SixLowPanRaCache m_raCache;

  /**
   * \brief 6LoWPAN Neighbor Discovery Cache container
   */
  typedef sgi::hash_map<Ipv6Address, SixLowPanNdiscCache::SixLowPanEntry *, Ipv6AddressHash> SixLowPanCache;

  /**
   * \brief 6LoWPAN Neighbor Discovery Cache container iterator
   */
  typedef sgi::hash_map<Ipv6Address, SixLowPanNdiscCache::SixLowPanEntry *, Ipv6AddressHash>::iterator SixLowPanCacheI;

  /**
   * \brief A list of Entry.
   */
  SixLowPanCache m_sixlowNdCache;
};

} /* namespace ns3 */

#endif /* SIXLOW_NDISC_CACHE_H */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#include <ns3/log.h>
#include "ns3/simulator.h"

#include "sixlowpan-ndisc-ra-options.h"


namespace ns3
{

NS_LOG_COMPONENT_DEFINE ("SixLowPanNdiscRaOptions");

SixLowPanPrefix::SixLowPanPrefix ()
{
  NS_LOG_FUNCTION (this);
}

SixLowPanPrefix::SixLowPanPrefix (Ipv6Address prefix, uint8_t prefixLen, uint32_t prefTime, uint32_t validTime, uint8_t flags)
  : m_prefix (prefix),
    m_prefixLength (prefixLen),
    m_preferredLifeTime (prefTime),
    m_validLifeTime (validTime),
    m_flags (flags)
{
  NS_LOG_FUNCTION (this << prefix << prefixLen << prefTime << validTime << flags);

  m_setValidTime = Simulator::Now ();
  m_setPrefTime = Simulator::Now ();
}

SixLowPanPrefix::~SixLowPanPrefix ()
{
  NS_LOG_FUNCTION (this);
}

Ipv6Address SixLowPanPrefix::GetPrefix () const
{
  NS_LOG_FUNCTION (this);
  return m_prefix;
}

void SixLowPanPrefix::SetPrefix (Ipv6Address prefix)
{
  NS_LOG_FUNCTION (this << prefix);
  m_prefix = prefix;
}

uint8_t SixLowPanPrefix::GetPrefixLength () const
{
  NS_LOG_FUNCTION (this);
  return m_prefixLength;
}

void SixLowPanPrefix::SetPrefixLength (uint8_t prefixLen)
{
  NS_LOG_FUNCTION (this << prefixLen);
  m_prefixLength = prefixLen;
}

uint32_t SixLowPanPrefix::GetValidLifeTime () const
{
  NS_LOG_FUNCTION (this);
  double time = Simulator::Now ().GetSeconds () - m_setValidTime.GetSeconds ();

  return m_validLifeTime - static_cast<uint32_t> (time);
}

void SixLowPanPrefix::SetValidLifeTime (uint32_t validTime)
{
  NS_LOG_FUNCTION (this << validTime);
  m_validLifeTime = validTime;

  m_setValidTime = Simulator::Now ();
}

uint32_t SixLowPanPrefix::GetPreferredLifeTime () const
{
  NS_LOG_FUNCTION (this);
  double time = Simulator::Now ().GetSeconds () - m_setPrefTime.GetSeconds ();

  return m_preferredLifeTime - static_cast<uint32_t> (time);
}

void SixLowPanPrefix::SetPreferredLifeTime (uint32_t prefTime)
{
  NS_LOG_FUNCTION (this << prefTime);
  m_preferredLifeTime = prefTime;

  m_setPrefTime = Simulator::Now ();
}

uint8_t SixLowPanPrefix::GetFlags () const
{
  NS_LOG_FUNCTION (this);
  return m_flags;
}

void SixLowPanPrefix::SetFlags (uint8_t flags)
{
  NS_LOG_FUNCTION (this << flags);
  m_flags = flags;
}

void SixLowPanPrefix::PrintPrefix (Ptr<OutputStreamWrapper> stream)
{
  NS_LOG_FUNCTION (this << stream);
  std::ostream* os = stream->GetStream ();

  *os << " Prefix Length: " << GetPrefixLength ();

  if (GetFlags () & (1 << 7))
    {
      *os << " On-link flag: true ";
    }
  else
    {
      *os << " On-link flag: false ";
    }
  if (GetFlags () & (1 << 6))
    {
      *os << " Autonomous flag: true ";
    }
      else
    {
      *os << " Autonomous flag: false ";
    }
  if (GetFlags () & (1 << 5))
    {
      *os << " Router address flag: true ";
    }
  else
    {
      *os << " Router address flag: false ";
    }

  *os << " Valid Lifetime: " << GetValidLifeTime ();
  *os << " Preferred Lifetime: " << GetPreferredLifeTime ();
  *os << " Prefix: " << GetPrefix ();
}

SixLowPanContext::SixLowPanContext ()
{
  NS_LOG_FUNCTION (this);
}

SixLowPanContext::SixLowPanContext (bool flagC, uint8_t cid, uint16_t time, Ipv6Prefix context)
  : m_c (flagC),
    m_cid (cid),
    m_validTime (time),
    m_context (context)
{
  NS_LOG_FUNCTION (this << flagC << static_cast<uint32_t> (cid) << time << context);

  m_setTime = Simulator::Now ();
}

SixLowPanContext::~SixLowPanContext ()
{
  NS_LOG_FUNCTION (this);
}

uint8_t SixLowPanContext::GetContextLen () const
{
  NS_LOG_FUNCTION (this);
  return m_length;
}

void SixLowPanContext::SetContextLen (uint8_t length)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (length));
  m_length = length;
}

bool SixLowPanContext::IsFlagC () const
{
  NS_LOG_FUNCTION (this);
  return m_c;
}

void SixLowPanContext::SetFlagC (bool c)
{
  NS_LOG_FUNCTION (this << c);
  m_c = c;
}

uint8_t SixLowPanContext::GetCid () const
{
  NS_LOG_FUNCTION (this);
  return m_cid;
}

void SixLowPanContext::SetCid (uint8_t cid)
{
  NS_LOG_FUNCTION (this << static_cast<uint32_t> (cid));
  NS_ASSERT (cid <= 15);
  m_cid = cid;
}

uint16_t SixLowPanContext::GetValidTime () const
{
  NS_LOG_FUNCTION (this);

  double time = Simulator::Now ().GetMinutes () - m_setTime.GetMinutes ();

  return m_validTime - static_cast<uint16_t> (time);
}

void SixLowPanContext::SetValidTime (uint16_t time)
{
  NS_LOG_FUNCTION (this << time);
  m_validTime = time;

  m_setTime = Simulator::Now ();

  Simulator::Schedule (Time (Minutes (time)), &SixLowPanContext::ValidTimeout, this);
}

Ipv6Prefix SixLowPanContext::GetContextPrefix () const
{
  NS_LOG_FUNCTION (this);
  return m_context;
}

void SixLowPanContext::SetContextPrefix (Ipv6Prefix context)
{
  NS_LOG_FUNCTION (this << context);
  m_context = context;
}

void SixLowPanContext::PrintContext (Ptr<OutputStreamWrapper> stream)
{
  NS_LOG_FUNCTION (this << stream);
  std::ostream* os = stream->GetStream ();

  *os << " Context Length: " << GetContextLen ();

  if (IsFlagC ())
    {
      *os << " Compression flag: true ";
    }
  else
    {
      *os << " Compression flag: false ";
    }

  *os << " Context Identifier: " << GetCid ();
  *os << " Valid Lifetime: " << GetValidTime ();
  *os << " Context Prefix: " << GetContextPrefix ();
}

void SixLowPanContext::ValidTimeout ()
{
  NS_LOG_FUNCTION_NOARGS ();

  m_c = false;

  Simulator::Schedule (Time (Seconds (2 * 1000 /*m_entry->GetRouterLifeTime ()*/)), &SixLowPanContext::RouterTimeout, this);
} /// \todo da finire!!!

void SixLowPanContext::RouterTimeout ()
{
  NS_LOG_FUNCTION_NOARGS ();

  //m_entry->RemoveContext (this);
  return;
} /// \todo da finire!!!

} /* namespace ns3 */




/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 Università di Firenze, Italy
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alessio Bonadio <alessio.bonadio@gmail.com>
 */

#ifndef SIXLOW_NDISC_RA_OPTIONS_H
#define SIXLOW_NDISC_RA_OPTIONS_H

#include <stdint.h>

#include "ns3/nstime.h"
#include "ns3/ipv6-address.h"
#include "ns3/simple-ref-count.h"
#include "ns3/output-stream-wrapper.h"

namespace ns3
{

/**
 * \ingroup sixlowpan
 * \class SixLowPanPrefix
 * \brief Router prefix container for 6LoWPAN ND.
 */
class SixLowPanPrefix : public SimpleRefCount<SixLowPanPrefix>
{
public:
  /**
   * \brief Constructor.
   */
  SixLowPanPrefix ();

  /**
   * \brief Constructor.
   * \param prefix network prefix advertised
   * \param prefixLen prefix length ( 0 < x <= 128)
   * \param prefTime preferred life time in seconds (default 7 days)
   * \param validTime valid life time in seconds (default 30 days)
   * \param flags the flags (L = 128, A = 64, R = 32)
   */
  SixLowPanPrefix (Ipv6Address prefix, uint8_t prefixLen, uint32_t prefTime, uint32_t validTime, uint8_t flags);

  /**
   * \brief Destructor.
   */
  ~SixLowPanPrefix ();

   /**
   * \brief Get network prefix.
   * \return network prefix
   */
  Ipv6Address GetPrefix () const;

  /**
   * \brief Set network prefix.
   * \param network network prefix
   */
  void SetPrefix (Ipv6Address prefix);

  /**
   * \brief Get prefix length.
   * \return prefix length
   */
  uint8_t GetPrefixLength () const;

  /**
   * \brief Set prefix length.
   * \param prefixLen prefix length
   */
  void SetPrefixLength (uint8_t prefixLen);

  /**
   * \brief Get preferred lifetime.
   * \return lifetime
   */
  uint32_t GetPreferredLifeTime () const;

  /**
   * \brief Set preferred lifetime.
   * \param prefTime lifetime
   */
  void SetPreferredLifeTime (uint32_t prefTime);

  /**
   * \brief Get valid lifetime.
   * \return lifetime
   */
  uint32_t GetValidLifeTime () const;

  /**
   * \brief Set valid lifetime.
   * \param validTime lifetime
   */
  void SetValidLifeTime (uint32_t validTime);

  /**
   * \brief Get the flags.
   * \return the flags (L = 128, A = 64, R = 32)
   */
  uint8_t GetFlags () const;

  /**
   * \brief Set the flags.
   * \param flags the flags to set (L = 128, A = 64, R = 32)
   */
  void SetFlags (uint8_t flags);

  /**
   * \brief Print the prefix
   * \param stream the ostream the prefix is printed to
   */
  void PrintPrefix (Ptr<OutputStreamWrapper> stream);

private:
  /**
   * \brief Network prefix.
   */
  Ipv6Address m_prefix;

  /**
   * \brief Prefix length.
   */
  uint8_t m_prefixLength;

  /**
   * \brief Preferred time.
   */
  uint32_t m_preferredLifeTime;

  /**
   * \brief Valid time.
   */
  uint32_t m_validLifeTime;

  /**
   * \brief Flags.
   */
  uint8_t m_flags;

  /**
   * \brief Prefix valid lifetime set time.
   */
  Time m_setValidTime;

  /**
   * \brief Prefix preferred lifetime set time.
   */
  Time m_setPrefTime;
};

/**
 * \ingroup sixlowpan
 * \class SixLowPanContext
 * \brief 6LoWPAN context container for 6LoWPAN ND.
 */
class SixLowPanContext : public SimpleRefCount<SixLowPanContext>
{
public:
  /**
   * \brief Constructor.
   */
  SixLowPanContext ();

  /**
   * \brief Constructor.
   * \param flagC compression flag
   * \param cid context identifier ( 0 <= x <= 15)
   * \param time valid lifetime of context (units of 60 seconds)
   * \param context 6LoWPAN context advertised
   */
  SixLowPanContext (bool flagC, uint8_t cid, uint16_t time, Ipv6Prefix context);

  /**
   * \brief Destructor.
   */
  ~SixLowPanContext ();

  /**
   * \brief Get the context length.
   * \return context length value
   */
  uint8_t GetContextLen () const;

  /**
   * \brief Set the context length.
   * \param length the context length value
   */
  void SetContextLen (uint8_t length);

  /**
   * \brief Is compression flag ?
   * \return true if context is valid for use in compression, false otherwise
   */
  bool IsFlagC () const;

  /**
   * \brief Set the compression flag.
   * \param c the compression flag
   */
  void SetFlagC (bool c);

  /**
   * \brief Get the context identifier.
   * \return context identifier value
   */
  uint8_t GetCid () const;

  /**
   * \brief Set the context identifier.
   * \param cid the context identifier value
   */
  void SetCid (uint8_t cid);

  /**
   * \brief Get the valid lifetime.
   * \return valid lifetime value (units of 60 seconds)
   */
  uint16_t GetValidTime () const;

  /**
   * \brief Set the valid lifetime.
   * \param time the valid lifetime value (units of 60 seconds)
   */
  void SetValidTime (uint16_t time);

  /**
   * \brief Get the 6LoWPAN context prefix.
   * \return context prefix value
   */
  Ipv6Prefix GetContextPrefix () const;

  /**
   * \brief Set the 6LoWPAN context prefix.
   * \param prefix the context prefix value
   */
  void SetContextPrefix (Ipv6Prefix context);

  /**
   * \brief Print the 6LoWPAN context.
   * \param stream the ostream the 6LoWPAN context is printed to
   */
  void PrintContext (Ptr<OutputStreamWrapper> stream);

  /**
   * \brief Function called when valid lifetime timeout.
   */
  void ValidTimeout ();

  /**
   * \brief Function called when router lifetime timeout.
   */
  void RouterTimeout ();

private:
  /**
   * \brief The context length value.
   */
  uint8_t m_length;

  /**
   * \brief The compression flag, indicates that this context is valid for use in compression.
   */
  bool m_c;

  /**
   * \brief The context identifier value.
   */
  uint8_t m_cid;

  /**
   * \brief The valid lifetime value (units of 60 seconds).
   */
  uint16_t m_validTime;

  /**
   * \brief The context prefix value.
   */
  Ipv6Prefix m_context;

  /**
   * \brief Context set time.
   */
  Time m_setTime;
};

} /* namespace ns3 */

#endif /* SIXLOW_NDISC_RA_OPTIONS_H */




   */
  int64_t AssignStreams (int64_t stream);

  /**
   * \brief Make a link-local address from a MAC address.
   * \param [in] addr The MAC address.
   * \return The IPv6 link-local address.
   */
  Ipv6Address MakeLinkLocalAddressFromMac (Address const &addr);

  /**
   * \brief Make a global address from a MAC address.
   * \param [in] addr the MAC address.
   * \param [in] prefix The address prefix.
   * \return The IPv6 address.
   */
  Ipv6Address MakeGlobalAddressFromMac (Address const &addr, Ipv6Address prefix);

  /**
   * TracedCallback signature for packet send/receive events.
   *

   */
  TracedCallback<DropReason, Ptr<const Packet>, Ptr<SixLowPanNetDevice>, uint32_t> m_dropTrace;

  /**
   * \brief Make a link-local address from a MAC address.
   * \param [in] addr The MAC address.
   * \return The IPv6 link-local address.
   */
  Ipv6Address MakeLinkLocalAddressFromMac (Address const &addr);

  /**
   * \brief Make a global address from a MAC address.
   * \param [in] addr the MAC address.
   * \param [in] prefix The address prefix.
   * \return The IPv6 address.
   */
  Ipv6Address MakeGlobalAddressFromMac (Address const &addr, Ipv6Address prefix);

  /**
   * \brief Compress the headers according to HC1 compression.
   * \param [in] packet The packet to be compressed.

(-)a/src/sixlowpan/wscript (+8 lines)

Lines 6-11 def build(bld):	Link Here

    module.source = [

    module.source = [

        'model/sixlowpan-net-device.cc',

        'model/sixlowpan-net-device.cc',

        'model/sixlowpan-header.cc',

        'model/sixlowpan-header.cc',

        'model/sixlowpan-ndisc-cache.cc',

        'model/sixlowpan-ndisc-ra-options.cc',

        'model/sixlowpan-nd-header.cc',

        'model/sixlowpan-nd-protocol.cc',

        'helper/sixlowpan-helper.cc',

        'helper/sixlowpan-helper.cc',

Lines 22-27 def build(bld):	Link Here

    headers.source = [

    headers.source = [

        'model/sixlowpan-net-device.h',

        'model/sixlowpan-net-device.h',

        'model/sixlowpan-header.h',

        'model/sixlowpan-header.h',

        'model/sixlowpan-ndisc-cache.h',

        'model/sixlowpan-ndisc-ra-options.h',

        'model/sixlowpan-nd-header.h',

        'model/sixlowpan-nd-protocol.h',

        'helper/sixlowpan-helper.h',

        'helper/sixlowpan-helper.h',

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