nr-epc-pgw-application.h

// Copyright (c) 2018 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
//
// SPDX-License-Identifier: GPL-2.0-only
//
// Author: Manuel Requena <manuel.requena@cttc.es>
//         (based on epc-sgw-pgw-application.h)
 
#ifndef NR_EPC_PGW_APPLICATION_H
#define NR_EPC_PGW_APPLICATION_H
 
#include "nr-epc-gtpc-header.h"
#include "nr-epc-tft-classifier.h"
 
#include "ns3/application.h"
#include "ns3/socket.h"
#include "ns3/virtual-net-device.h"
 
namespace ns3
{
 
class NrEpcPgwApplication : public Application
{
  public:
    static TypeId GetTypeId();
    void DoDispose() override;
 
    NrEpcPgwApplication(const Ptr<VirtualNetDevice> tunDevice,
                        Ipv4Address s5Addr,
                        const Ptr<Socket> s5uSocket,
                        const Ptr<Socket> s5cSocket);
 
    ~NrEpcPgwApplication() override;
 
    bool RecvFromTunDevice(Ptr<Packet> packet,
                           const Address& source,
                           const Address& dest,
                           uint16_t protocolNumber);
 
    void RecvFromS5uSocket(Ptr<Socket> socket);
 
    void RecvFromS5cSocket(Ptr<Socket> socket);
 
    void SendToTunDevice(Ptr<Packet> packet, uint32_t teid);
 
    void SendToS5uSocket(Ptr<Packet> packet, Ipv4Address sgwS5uAddress, uint32_t teid);
 
    void AddSgw(Ipv4Address sgwS5Addr);
 
    void AddUe(uint64_t imsi);
 
    void SetUeAddress(uint64_t imsi, Ipv4Address ueAddr);
 
    void SetUeAddress6(uint64_t imsi, Ipv6Address ueAddr);
 
    typedef void (*RxTracedCallback)(Ptr<Packet> packet);
 
  private:
    void DoRecvCreateSessionRequest(Ptr<Packet> packet);
 
    void DoRecvModifyBearerRequest(Ptr<Packet> packet);
 
    void DoRecvDeleteBearerCommand(Ptr<Packet> packet);
 
    void DoRecvDeleteBearerResponse(Ptr<Packet> packet);
 
    class NrUeInfo : public SimpleRefCount<NrUeInfo>
    {
      public:
        NrUeInfo();
 
        void AddBearer(uint8_t bearerId, uint32_t teid, Ptr<NrEpcTft> tft);
 
        void RemoveBearer(uint8_t bearerId);
 
        uint32_t Classify(Ptr<Packet> p, uint16_t protocolNumber);
 
        Ipv4Address GetSgwAddr();
 
        void SetSgwAddr(Ipv4Address addr);
 
        Ipv4Address GetUeAddr();
 
        void SetUeAddr(Ipv4Address addr);
 
        Ipv6Address GetUeAddr6();
 
        void SetUeAddr6(Ipv6Address addr);
 
      private:
        Ipv4Address m_ueAddr;                            
        Ipv6Address m_ueAddr6;                           
        Ipv4Address m_sgwAddr;                           
        NrEpcTftClassifier m_tftClassifier;              
        std::map<uint8_t, uint32_t> m_teidByBearerIdMap; 
    };
 
    Ipv4Address m_pgwS5Addr;
 
    Ptr<Socket> m_s5uSocket;
 
    Ptr<Socket> m_s5cSocket;
 
    Ptr<VirtualNetDevice> m_tunDevice;
 
    std::map<Ipv4Address, Ptr<NrUeInfo>> m_ueInfoByAddrMap;
 
    std::map<Ipv6Address, Ptr<NrUeInfo>> m_ueInfoByAddrMap6;
 
    std::map<uint64_t, Ptr<NrUeInfo>> m_ueInfoByImsiMap;
 
    uint16_t m_gtpuUdpPort;
 
    uint16_t m_gtpcUdpPort;
 
    Ipv4Address m_sgwS5Addr;
 
    TracedCallback<Ptr<Packet>> m_rxTunPktTrace;
 
    TracedCallback<Ptr<Packet>> m_rxS5PktTrace;
};
 
} // namespace ns3
 
#endif // NR_EPC_PGW_APPLICATION_H