tunnel-controller.h

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/*
 * Copyright (c) 2016 University of Campinas (Unicamp)
 *
 * 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: Luciano Jerez Chaves <ljerezchaves@gmail.com>
 */
 
#ifndef TUNNEL_CONTROLLER_H
#define TUNNEL_CONTROLLER_H
 
#include <ns3/applications-module.h>
#include <ns3/core-module.h>
#include <ns3/internet-module.h>
#include <ns3/network-module.h>
#include <ns3/ofswitch13-module.h>
#include <ns3/virtual-net-device-module.h>
 
namespace ns3
{
 
class TunnelController : public OFSwitch13Controller
{
  public:
    TunnelController();           
    ~TunnelController() override; 
 
    static TypeId GetTypeId();
 
    void SaveArpEntry(Ipv4Address ipAddr, Mac48Address macAddr);
 
    void SaveTunnelEndpoint(uint64_t dpId, uint32_t portNo, Ipv4Address ipAddr);
 
  protected:
    void DoDispose() override;
 
    // Inherited from OFSwitch13Controller
    void HandshakeSuccessful(Ptr<const RemoteSwitch> swtch) override;
 
    ofl_err HandlePacketIn(struct ofl_msg_packet_in* msg,
                           Ptr<const RemoteSwitch> swtch,
                           uint32_t xid) override;
 
  private:
    Mac48Address GetArpEntry(Ipv4Address ip);
 
    Ipv4Address GetTunnelEndpoint(uint64_t dpId, uint32_t portNo);
 
    ofl_err HandleArpPacketIn(struct ofl_msg_packet_in* msg,
                              Ptr<const RemoteSwitch> swtch,
                              uint32_t xid);
 
    Ipv4Address ExtractIpv4Address(uint32_t oxm_of, struct ofl_match* match);
 
    Ptr<Packet> CreateArpReply(Mac48Address srcMac,
                               Ipv4Address srcIp,
                               Mac48Address dstMac,
                               Ipv4Address dstIp);
 
    typedef std::pair<uint64_t, uint32_t> DpPortPair_t;
 
    typedef std::map<DpPortPair_t, Ipv4Address> DpPortIpMap_t;
 
    typedef std::map<Ipv4Address, Mac48Address> IpMacMap_t;
 
    IpMacMap_t m_arpTable;         
    DpPortIpMap_t m_endpointTable; 
};
 
} // namespace ns3
#endif /* TUNNEL_CONTROLLER_H */