epc-s11-sap.h

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/*
 * Copyright (c) 2012 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: Nicola Baldo <nbaldo@cttc.cat>
 */
 
#ifndef EPC_S11_SAP_H
#define EPC_S11_SAP_H
 
#include "epc-tft.h"
#include "eps-bearer.h"
 
#include <ns3/address.h>
#include <ns3/object.h>
#include <ns3/ptr.h>
 
#include <list>
 
namespace ns3
{
 
class EpcS11Sap
{
  public:
    virtual ~EpcS11Sap();
 
    struct GtpcMessage
    {
        uint32_t teid; 
    };
 
    struct Fteid
    {
        uint32_t teid;       
        Ipv4Address address; 
    };
 
    struct Uli
    {
        uint16_t gci; 
    };
};
 
class EpcS11SapMme : public EpcS11Sap
{
  public:
    struct BearerContextCreated
    {
        EpcS11Sap::Fteid sgwFteid; 
        uint8_t epsBearerId;       
        EpsBearer bearerLevelQos;  
        Ptr<EpcTft> tft;           
    };
 
    struct CreateSessionResponseMessage : public GtpcMessage
    {
        std::list<BearerContextCreated> bearerContextsCreated; 
    };
 
    virtual void CreateSessionResponse(CreateSessionResponseMessage msg) = 0;
 
    struct BearerContextRemoved
    {
        uint8_t epsBearerId; 
    };
 
    struct DeleteBearerRequestMessage : public GtpcMessage
    {
        std::list<BearerContextRemoved> bearerContextsRemoved; 
    };
 
    virtual void DeleteBearerRequest(DeleteBearerRequestMessage msg) = 0;
 
    struct ModifyBearerResponseMessage : public GtpcMessage
    {
        enum Cause
        {
            REQUEST_ACCEPTED = 0,
            REQUEST_ACCEPTED_PARTIALLY,
            REQUEST_REJECTED,
            CONTEXT_NOT_FOUND
        };
 
        Cause cause; 
    };
 
    virtual void ModifyBearerResponse(ModifyBearerResponseMessage msg) = 0;
};
 
class EpcS11SapSgw : public EpcS11Sap
{
  public:
    struct BearerContextToBeCreated
    {
        EpcS11Sap::Fteid sgwFteid; 
        uint8_t epsBearerId;       
        EpsBearer bearerLevelQos;  
        Ptr<EpcTft> tft;           
    };
 
    struct CreateSessionRequestMessage : public GtpcMessage
    {
        uint64_t imsi; 
        Uli uli;       
        std::list<BearerContextToBeCreated>
            bearerContextsToBeCreated; 
    };
 
    virtual void CreateSessionRequest(CreateSessionRequestMessage msg) = 0;
 
    struct BearerContextToBeRemoved
    {
        uint8_t epsBearerId; 
    };
 
    struct DeleteBearerCommandMessage : public GtpcMessage
    {
        std::list<BearerContextToBeRemoved>
            bearerContextsToBeRemoved; 
    };
 
    virtual void DeleteBearerCommand(DeleteBearerCommandMessage msg) = 0;
 
    struct BearerContextRemovedSgwPgw
    {
        uint8_t epsBearerId; 
    };
 
    struct DeleteBearerResponseMessage : public GtpcMessage
    {
        std::list<BearerContextRemovedSgwPgw>
            bearerContextsRemoved; 
    };
 
    virtual void DeleteBearerResponse(DeleteBearerResponseMessage msg) = 0;
 
    struct ModifyBearerRequestMessage : public GtpcMessage
    {
        Uli uli; 
    };
 
    virtual void ModifyBearerRequest(ModifyBearerRequestMessage msg) = 0;
};
 
template <class C>
class MemberEpcS11SapMme : public EpcS11SapMme
{
  public:
    MemberEpcS11SapMme(C* owner);
 
    // Delete default constructor to avoid misuse
    MemberEpcS11SapMme() = delete;
 
    // inherited from EpcS11SapMme
    void CreateSessionResponse(CreateSessionResponseMessage msg) override;
    void ModifyBearerResponse(ModifyBearerResponseMessage msg) override;
    void DeleteBearerRequest(DeleteBearerRequestMessage msg) override;
 
  private:
    C* m_owner; 
};
 
template <class C>
MemberEpcS11SapMme<C>::MemberEpcS11SapMme(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
MemberEpcS11SapMme<C>::CreateSessionResponse(CreateSessionResponseMessage msg)
{
    m_owner->DoCreateSessionResponse(msg);
}
 
template <class C>
void
MemberEpcS11SapMme<C>::DeleteBearerRequest(DeleteBearerRequestMessage msg)
{
    m_owner->DoDeleteBearerRequest(msg);
}
 
template <class C>
void
MemberEpcS11SapMme<C>::ModifyBearerResponse(ModifyBearerResponseMessage msg)
{
    m_owner->DoModifyBearerResponse(msg);
}
 
template <class C>
class MemberEpcS11SapSgw : public EpcS11SapSgw
{
  public:
    MemberEpcS11SapSgw(C* owner);
 
    // Delete default constructor to avoid misuse
    MemberEpcS11SapSgw() = delete;
 
    // inherited from EpcS11SapSgw
    void CreateSessionRequest(CreateSessionRequestMessage msg) override;
    void ModifyBearerRequest(ModifyBearerRequestMessage msg) override;
    void DeleteBearerCommand(DeleteBearerCommandMessage msg) override;
    void DeleteBearerResponse(DeleteBearerResponseMessage msg) override;
 
  private:
    C* m_owner; 
};
 
template <class C>
MemberEpcS11SapSgw<C>::MemberEpcS11SapSgw(C* owner)
    : m_owner(owner)
{
}
 
template <class C>
void
MemberEpcS11SapSgw<C>::CreateSessionRequest(CreateSessionRequestMessage msg)
{
    m_owner->DoCreateSessionRequest(msg);
}
 
template <class C>
void
MemberEpcS11SapSgw<C>::ModifyBearerRequest(ModifyBearerRequestMessage msg)
{
    m_owner->DoModifyBearerRequest(msg);
}
 
template <class C>
void
MemberEpcS11SapSgw<C>::DeleteBearerCommand(DeleteBearerCommandMessage msg)
{
    m_owner->DoDeleteBearerCommand(msg);
}
 
template <class C>
void
MemberEpcS11SapSgw<C>::DeleteBearerResponse(DeleteBearerResponseMessage msg)
{
    m_owner->DoDeleteBearerResponse(msg);
}
 
} // namespace ns3
 
#endif /* EPC_S11_SAP_H */