packet-socket.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007 Emmanuelle Laprise, INRIA
 *
 * 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
 *
 * Authors: Emmanuelle Laprise <emmanuelle.laprise@bluekazoo.ca>,
 *          Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 */
#ifndef PACKET_SOCKET_H
#define PACKET_SOCKET_H

#include <stdint.h>
#include <queue>
#include "ns3/callback.h"
#include "ns3/traced-callback.h"
#include "ns3/ptr.h"
#include "ns3/socket.h"
#include "ns3/net-device.h"

namespace ns3 {

class Node;
class Packet;
class NetDevice;
class PacketSocketAddress;

class PacketSocket : public Socket
{
public:
  static TypeId GetTypeId (void);

  PacketSocket ();
  virtual ~PacketSocket ();

  void SetNode (Ptr<Node> node);

  virtual enum SocketErrno GetErrno (void) const;
  virtual enum SocketType GetSocketType (void) const;
  virtual Ptr<Node> GetNode (void) const;
  virtual int Bind (void);
  virtual int Bind6 (void);
  virtual int Bind (const Address & address);
  virtual int Close (void);
  virtual int ShutdownSend (void);
  virtual int ShutdownRecv (void);
  virtual int Connect (const Address &address);
  virtual int Listen (void);
  virtual uint32_t GetTxAvailable (void) const;
  virtual int Send (Ptr<Packet> p, uint32_t flags);
  virtual int SendTo (Ptr<Packet> p, uint32_t flags, const Address &toAddress);
  virtual uint32_t GetRxAvailable (void) const;
  virtual Ptr<Packet> Recv (uint32_t maxSize, uint32_t flags);
  virtual Ptr<Packet> RecvFrom (uint32_t maxSize, uint32_t flags,
                                Address &fromAddress);
  virtual int GetSockName (Address &address) const; 
  virtual bool SetAllowBroadcast (bool allowBroadcast);
  virtual bool GetAllowBroadcast () const;

private:
  void ForwardUp (Ptr<NetDevice> device, Ptr<const Packet> packet, 
                  uint16_t protocol, const Address &from, const Address &to,
                  NetDevice::PacketType packetType);
  int DoBind (const PacketSocketAddress &address);

  uint32_t GetMinMtu (PacketSocketAddress ad) const;
  virtual void DoDispose (void);

  enum State {
    STATE_OPEN,
    STATE_BOUND,     // open and bound
    STATE_CONNECTED, // open, bound and connected
    STATE_CLOSED
  };

  Ptr<Node> m_node;         
  enum SocketErrno m_errno; 
  bool m_shutdownSend;      
  bool m_shutdownRecv;      
  enum State m_state;       
  uint16_t m_protocol;      
  bool m_isSingleDevice;    
  uint32_t m_device;        
  Address m_destAddr;       

  std::queue<Ptr<Packet> > m_deliveryQueue; 
  uint32_t m_rxAvailable; 

  TracedCallback<Ptr<const Packet> > m_dropTrace;

  // Socket options (attributes)
  uint32_t m_rcvBufSize; 

};

class PacketSocketTag : public Tag
{
public:
  PacketSocketTag ();
  void SetPacketType (NetDevice::PacketType t);
  NetDevice::PacketType GetPacketType (void) const;
  void SetDestAddress(Address a);
  Address GetDestAddress (void) const;

  static TypeId GetTypeId (void);
  virtual TypeId GetInstanceTypeId (void) const;
  virtual uint32_t GetSerializedSize (void) const;
  virtual void Serialize (TagBuffer i) const;
  virtual void Deserialize (TagBuffer i);
  virtual void Print (std::ostream &os) const;

private:
  NetDevice::PacketType m_packetType; 
  Address m_destAddr; 
};
class DeviceNameTag : public Tag
{
public:
  DeviceNameTag ();
  void SetDeviceName (std::string n);
  std::string GetDeviceName (void) const;
  static TypeId GetTypeId (void);
  virtual TypeId GetInstanceTypeId (void) const;
  virtual uint32_t GetSerializedSize (void) const;
  virtual void Serialize (TagBuffer i) const;
  virtual void Deserialize (TagBuffer i);
  virtual void Print (std::ostream &os) const;

private:
  std::string m_deviceName; 
};

} // namespace ns3

#endif /* PACKET_SOCKET_H */