openflow-switch-net-device.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * 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: Blake Hurd  <naimorai@gmail.com>
 */

#ifndef OPENFLOW_SWITCH_NET_DEVICE_H
#define OPENFLOW_SWITCH_NET_DEVICE_H

#include "ns3/simulator.h"
#include "ns3/log.h"
#include "ns3/mac48-address.h"

#include "ns3/ethernet-header.h"
#include "ns3/arp-header.h"
#include "ns3/tcp-header.h"
#include "ns3/udp-header.h"

#include "ns3/ipv4-l3-protocol.h"
#include "ns3/arp-l3-protocol.h"

#include "ns3/bridge-channel.h"
#include "ns3/node.h"
#include "ns3/enum.h"
#include "ns3/string.h"
#include "ns3/integer.h"
#include "ns3/uinteger.h"

#include <map>
#include <set>

#include "openflow-interface.h"

namespace ns3 {

class OpenFlowSwitchNetDevice : public NetDevice
{
public:
  static TypeId GetTypeId (void);

  //\{
  static const char * GetManufacturerDescription ();
  static const char * GetHardwareDescription ();
  static const char * GetSoftwareDescription ();
  static const char * GetSerialNumber ();
  //\}

  OpenFlowSwitchNetDevice ();
  virtual ~OpenFlowSwitchNetDevice ();

  void SetController (Ptr<ofi::Controller> c);

  int AddSwitchPort (Ptr<NetDevice> switchPort);

  int AddVPort (const ofp_vport_mod *ovpm);

  int StatsDump (ofi::StatsDumpCallback *cb_);

  void StatsDone (ofi::StatsDumpCallback *cb_);

  void DoOutput (uint32_t packet_uid, int in_port, size_t max_len, int out_port, bool ignore_no_fwd);

  int ForwardControlInput (const void *msg, size_t length);

  sw_chain* GetChain ();

  uint32_t GetNSwitchPorts (void) const;

  int GetSwitchPortIndex (ofi::Port p);

  ofi::Port GetSwitchPort (uint32_t n) const;

  vport_table_t GetVPortTable ();

  //\{
  virtual void SetIfIndex (const uint32_t index);
  virtual uint32_t GetIfIndex (void) const;
  virtual Ptr<Channel> GetChannel (void) const;
  virtual void SetAddress (Address address);
  virtual Address GetAddress (void) const;
  virtual bool SetMtu (const uint16_t mtu);
  virtual uint16_t GetMtu (void) const;
  virtual bool IsLinkUp (void) const;
  virtual void AddLinkChangeCallback (Callback<void> callback);
  virtual bool IsBroadcast (void) const;
  virtual Address GetBroadcast (void) const;
  virtual bool IsMulticast (void) const;
  virtual Address GetMulticast (Ipv4Address multicastGroup) const;
  virtual bool IsPointToPoint (void) const;
  virtual bool IsBridge (void) const;
  virtual bool Send (Ptr<Packet> packet, const Address& dest, uint16_t protocolNumber);
  virtual bool SendFrom (Ptr<Packet> packet, const Address& source, const Address& dest, uint16_t protocolNumber);
  virtual Ptr<Node> GetNode (void) const;
  virtual void SetNode (Ptr<Node> node);
  virtual bool NeedsArp (void) const;
  virtual void SetReceiveCallback (NetDevice::ReceiveCallback cb);
  virtual void SetPromiscReceiveCallback (NetDevice::PromiscReceiveCallback cb);
  virtual bool SupportsSendFrom () const;
  virtual Address GetMulticast (Ipv6Address addr) const;
  //\}

protected:
  virtual void DoDispose (void);

  void ReceiveFromDevice (Ptr<NetDevice> netdev, Ptr<const Packet> packet, uint16_t protocol, const Address& src, const Address& dst, PacketType packetType);

  ofpbuf * BufferFromPacket (Ptr<Packet> packet, Address src, Address dst, int mtu, uint16_t protocol);

private:
  int AddFlow (const ofp_flow_mod *ofm);

  int ModFlow (const ofp_flow_mod *ofm);

  int OutputAll (uint32_t packet_uid, int in_port, bool flood);

  void OutputPacket (uint32_t packet_uid, int out_port);

  void OutputPort (uint32_t packet_uid, int in_port, int out_port, bool ignore_no_fwd);

  void OutputControl (uint32_t packet_uid, int in_port, size_t max_len, int reason);

  void SendErrorMsg (uint16_t type, uint16_t code, const void *data, size_t len);

  void SendFeaturesReply ();

  void SendFlowExpired (sw_flow *flow, enum ofp_flow_expired_reason reason);

  void SendPortStatus (ofi::Port p, uint8_t status);

  void SendVPortTableFeatures ();

  int SendOpenflowBuffer (ofpbuf *buffer);

  void RunThroughFlowTable (uint32_t packet_uid, int port, bool send_to_controller = true);

  int RunThroughVPortTable (uint32_t packet_uid, int port, uint32_t vport);

  void FlowTableLookup (sw_flow_key key, ofpbuf* buffer, uint32_t packet_uid, int port, bool send_to_controller);

  int UpdatePortStatus (ofi::Port& p);

  void FillPortDesc (ofi::Port p, ofp_phy_port *desc);

  void* MakeOpenflowReply (size_t openflow_len, uint8_t type, ofpbuf **bufferp);

  //\{
  int ReceiveFeaturesRequest (const void *msg);
  int ReceiveGetConfigRequest (const void *msg);
  int ReceiveSetConfig (const void *msg);
  int ReceivePacketOut (const void *msg);
  int ReceiveFlow (const void *msg);
  int ReceivePortMod (const void *msg);
  int ReceiveStatsRequest (const void *oh);
  int ReceiveEchoRequest (const void *oh);
  int ReceiveEchoReply (const void *oh);
  int ReceiveVPortMod (const void *msg);
  int ReceiveVPortTableFeaturesRequest (const void *msg);
  //\}

  NetDevice::ReceiveCallback m_rxCallback;
  NetDevice::PromiscReceiveCallback m_promiscRxCallback;

  Mac48Address m_address;               
  Ptr<Node> m_node;                     
  Ptr<BridgeChannel> m_channel;         
  uint32_t m_ifIndex;                   
  uint16_t m_mtu;                       

  typedef std::map<uint32_t,ofi::SwitchPacketMetadata> PacketData_t;
  PacketData_t m_packetData;            

  typedef std::vector<ofi::Port> Ports_t;
  Ports_t m_ports;                      

  Ptr<ofi::Controller> m_controller;    

  uint64_t m_id;                        
  Time m_lookupDelay;                   

  Time m_lastExecute;                   
  uint16_t m_flags;                     
  uint16_t m_missSendLen;               

  sw_chain *m_chain;             
  vport_table_t m_vportTable;    
};

} // namespace ns3

#endif /* OPENFLOW_SWITCH_NET_DEVICE_H */