icmpv6-l4-protocol.h

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/* -*- 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>
 */

#ifndef ICMPV6_L4_PROTOCOL_H
#define ICMPV6_L4_PROTOCOL_H

#include <list>

#include "ns3/ipv6-address.h"
#include "ns3/random-variable-stream.h"

#include "icmpv6-header.h"
#include "ip-l4-protocol.h"
#include "ndisc-cache.h"

namespace ns3 {

class NetDevice;
class Node;
class Packet;
class TraceContext;

class Icmpv6L4Protocol : public IpL4Protocol
{
public:
  static TypeId GetTypeId ();

  static const uint8_t PROT_NUMBER;

  static const uint8_t MAX_INITIAL_RTR_ADVERT_INTERVAL;

  static const uint8_t MAX_INITIAL_RTR_ADVERTISEMENTS;

  static const uint8_t MAX_FINAL_RTR_ADVERTISEMENTS;

  static const uint8_t MIN_DELAY_BETWEEN_RAS;

  static const uint32_t MAX_RA_DELAY_TIME;

  static const uint8_t MAX_RTR_SOLICITATION_DELAY;

  static const uint8_t RTR_SOLICITATION_INTERVAL;

  static const uint8_t MAX_RTR_SOLICITATIONS;

  static const uint8_t MAX_MULTICAST_SOLICIT;

  static const uint8_t MAX_UNICAST_SOLICIT;

  static const uint8_t MAX_ANYCAST_DELAY_TIME;

  static const uint8_t MAX_NEIGHBOR_ADVERTISEMENT;

  static const uint32_t REACHABLE_TIME;

  static const uint32_t RETRANS_TIMER;

  static const uint8_t DELAY_FIRST_PROBE_TIME;

  static const double MIN_RANDOM_FACTOR;

  static const double MAX_RANDOM_FACTOR;

  static uint16_t GetStaticProtocolNumber ();

  Icmpv6L4Protocol ();

  virtual ~Icmpv6L4Protocol ();

  void SetNode (Ptr<Node> node);

  void NotifyNewAggregate ();

  virtual int GetProtocolNumber () const;

  virtual int GetVersion () const;

  void SendMessage (Ptr<Packet> packet, Ipv6Address src, Ipv6Address dst, uint8_t ttl);

  void DelayedSendMessage (Ptr<Packet> packet, Ipv6Address src, Ipv6Address dst, uint8_t ttl);

  void SendMessage (Ptr<Packet> packet, Ipv6Address dst, Icmpv6Header& icmpv6Hdr, uint8_t ttl);

  void DoDAD (Ipv6Address target, Ptr<Ipv6Interface> interface);

  void SendNA (Ipv6Address src, Ipv6Address dst, Address* hardwareAddress, uint8_t flags);

  void SendEchoReply (Ipv6Address src, Ipv6Address dst, uint16_t id, uint16_t seq, Ptr<Packet> data);

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

  void SendErrorDestinationUnreachable (Ptr<Packet> malformedPacket, Ipv6Address dst, uint8_t code);

  void SendErrorTooBig (Ptr<Packet> malformedPacket, Ipv6Address dst, uint32_t mtu);

  void SendErrorTimeExceeded (Ptr<Packet> malformedPacket, Ipv6Address dst, uint8_t code);

  void SendErrorParameterError (Ptr<Packet> malformedPacket, Ipv6Address dst, uint8_t code, uint32_t ptr);

  void SendRedirection (Ptr<Packet> redirectedPacket, Ipv6Address src, Ipv6Address dst, Ipv6Address redirTarget, Ipv6Address redirDestination, Address redirHardwareTarget);

  NdiscCache::Ipv6PayloadHeaderPair ForgeNS (Ipv6Address src, Ipv6Address dst, Ipv6Address target, Address hardwareAddress);

  NdiscCache::Ipv6PayloadHeaderPair ForgeNA (Ipv6Address src, Ipv6Address dst, Address* hardwareAddress, uint8_t flags);

  NdiscCache::Ipv6PayloadHeaderPair ForgeRS (Ipv6Address src, Ipv6Address dst, Address hardwareAddress);

  NdiscCache::Ipv6PayloadHeaderPair ForgeEchoRequest (Ipv6Address src, Ipv6Address dst, uint16_t id, uint16_t seq, Ptr<Packet> data);

  virtual enum IpL4Protocol::RxStatus Receive (Ptr<Packet> p,
                                               Ipv4Header const &header,
                                               Ptr<Ipv4Interface> interface);

  virtual enum IpL4Protocol::RxStatus Receive (Ptr<Packet> p,
                                               Ipv6Header const &header,
                                               Ptr<Ipv6Interface> interface);

  static void FunctionDadTimeout (Ptr<Icmpv6L4Protocol> icmpv6, Ipv6Interface* interface, Ipv6Address addr);

  bool Lookup (Ipv6Address dst, Ptr<NetDevice> device, Ptr<NdiscCache> cache, Address* hardwareDestination);

  bool Lookup (Ptr<Packet> p, const Ipv6Header & ipHeader, Ipv6Address dst, Ptr<NetDevice> device, Ptr<NdiscCache> cache, Address* hardwareDestination);

  void SendRS (Ipv6Address src, Ipv6Address dst,  Address hardwareAddress);

  Ptr<NdiscCache> CreateCache (Ptr<NetDevice> device, Ptr<Ipv6Interface> interface);

  bool IsAlwaysDad () const;

  int64_t AssignStreams (int64_t stream);

protected:
  virtual void DoDispose ();

private:
  typedef std::list<Ptr<NdiscCache> > CacheList; 

  Ptr<Node> m_node;

  CacheList m_cacheList;

  bool m_alwaysDad;

  Ptr<RandomVariableStream> m_solicitationJitter;

  void Forward (Ipv6Address source, Icmpv6Header icmp,
                uint32_t info, Ipv6Header ipHeader,
                const uint8_t payload[8]);

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

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

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

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

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

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

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

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

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

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

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

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

  // From IpL4Protocol
  virtual void SetDownTarget (IpL4Protocol::DownTargetCallback cb);
  virtual void SetDownTarget6 (IpL4Protocol::DownTargetCallback6 cb);
  // From IpL4Protocol
  virtual IpL4Protocol::DownTargetCallback GetDownTarget (void) const;
  virtual IpL4Protocol::DownTargetCallback6 GetDownTarget6 (void) const;

  IpL4Protocol::DownTargetCallback6 m_downTarget; 

};

} /* namespace ns3 */

#endif /* ICMPV6_L4_PROTOCOL_H */