epc-s11-sap.h

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/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * 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 <ns3/address.h>
#include <ns3/ptr.h>
#include <ns3/object.h>
#include <ns3/eps-bearer.h>
#include <ns3/epc-tft.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 ModifyBearerResponseMessage : public GtpcMessage
  {
    enum Cause {
      REQUEST_ACCEPTED = 0,
      REQUEST_ACCEPTED_PARTIALLY,
      REQUEST_REJECTED,
      CONTEXT_NOT_FOUND
    } 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 ModifyBearerRequestMessage : public GtpcMessage
  {
    Uli uli;
  };

  virtual void ModifyBearerRequest (ModifyBearerRequestMessage msg) = 0;

};







template <class C>
class MemberEpcS11SapMme : public EpcS11SapMme
{
public:
  MemberEpcS11SapMme (C* owner);

  // inherited from EpcS11SapMme
  virtual void CreateSessionResponse (CreateSessionResponseMessage msg);
  virtual void ModifyBearerResponse (ModifyBearerResponseMessage msg);

private:
  MemberEpcS11SapMme ();
  C* m_owner;
};

template <class C>
MemberEpcS11SapMme<C>::MemberEpcS11SapMme (C* owner)
  : m_owner (owner)
{
}

template <class C>
MemberEpcS11SapMme<C>::MemberEpcS11SapMme ()
{
}

template <class C>
void MemberEpcS11SapMme<C>::CreateSessionResponse (CreateSessionResponseMessage msg)
{
  m_owner->DoCreateSessionResponse (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);

  // inherited from EpcS11SapSgw
  virtual void CreateSessionRequest (CreateSessionRequestMessage msg);
  virtual void ModifyBearerRequest (ModifyBearerRequestMessage msg);

private:
  MemberEpcS11SapSgw ();
  C* m_owner;
};

template <class C>
MemberEpcS11SapSgw<C>::MemberEpcS11SapSgw (C* owner)
  : m_owner (owner)
{
}

template <class C>
MemberEpcS11SapSgw<C>::MemberEpcS11SapSgw ()
{
}

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);
}









} //namespace ns3

#endif /* EPC_S11_SAP_H */