epc-sgw-application.h

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/*
 * Copyright (c) 2017-2018 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
 *
 * 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: Manuel Requena <manuel.requena@cttc.es>
 */
 
#ifndef EPC_SGW_APPLICATION_H
#define EPC_SGW_APPLICATION_H
 
#include "epc-gtpc-header.h"
 
#include "ns3/address.h"
#include "ns3/application.h"
#include "ns3/socket.h"
 
#include <map>
 
namespace ns3
{
 
class EpcSgwApplication : public Application
{
  public:
    static TypeId GetTypeId();
    void DoDispose() override;
 
    EpcSgwApplication(const Ptr<Socket> s1uSocket,
                      Ipv4Address s5Addr,
                      const Ptr<Socket> s5uSocket,
                      const Ptr<Socket> s5cSocket);
 
    ~EpcSgwApplication() override;
 
    void AddMme(Ipv4Address mmeS11Addr, Ptr<Socket> s11Socket);
 
    void AddPgw(Ipv4Address pgwAddr);
 
    void AddEnb(uint16_t cellId, Ipv4Address enbAddr, Ipv4Address sgwAddr);
 
  private:
    void RecvFromS11Socket(Ptr<Socket> socket);
 
    void RecvFromS5uSocket(Ptr<Socket> socket);
 
    void RecvFromS5cSocket(Ptr<Socket> socket);
 
    void RecvFromS1uSocket(Ptr<Socket> socket);
 
    void SendToS5uSocket(Ptr<Packet> packet, Ipv4Address pgwAddr, uint32_t teid);
 
    void SendToS1uSocket(Ptr<Packet> packet, Ipv4Address enbS1uAddress, uint32_t teid);
 
    // Process messages received from the MME
 
    void DoRecvCreateSessionRequest(Ptr<Packet> packet);
 
    void DoRecvModifyBearerRequest(Ptr<Packet> packet);
 
    void DoRecvDeleteBearerCommand(Ptr<Packet> packet);
 
    void DoRecvDeleteBearerResponse(Ptr<Packet> packet);
 
    // Process messages received from the PGW
 
    void DoRecvCreateSessionResponse(Ptr<Packet> packet);
 
    void DoRecvModifyBearerResponse(Ptr<Packet> packet);
 
    void DoRecvDeleteBearerRequest(Ptr<Packet> packet);
 
    Ipv4Address m_s5Addr;
 
    Ipv4Address m_mmeS11Addr;
 
    Ptr<Socket> m_s11Socket;
 
    Ipv4Address m_pgwAddr;
 
    Ptr<Socket> m_s5uSocket;
 
    Ptr<Socket> m_s5cSocket;
 
    Ptr<Socket> m_s1uSocket;
 
    uint16_t m_gtpuUdpPort;
 
    uint16_t m_gtpcUdpPort;
 
    uint32_t m_teidCount;
 
    struct EnbInfo
    {
        Ipv4Address enbAddr; 
        Ipv4Address sgwAddr; 
    };
 
    std::map<uint16_t, EnbInfo> m_enbInfoByCellId;
 
    std::map<uint32_t, Ipv4Address> m_enbByTeidMap;
 
    std::map<uint32_t, GtpcHeader::Fteid_t> m_mmeS11FteidBySgwS5cTeid;
};
 
} // namespace ns3
 
#endif // EPC_SGW_APPLICATION_H