/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2011 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 LTE_PDCP_HEADER_H

#define LTE_PDCP_HEADER_H

#include "ns3/header.h"

#include <list>

namespace ns3 {

/**

 * \ingroup lte

 * \brief The packet header for the Packet Data Convergence Protocol (PDCP) packets

 *

 * This class has fields corresponding to those in an PDCP header as well as

 * methods for serialization to and deserialization from a byte buffer.

 * It follows 3GPP TS 36.323 Packet Data Convergence Protocol (PDCP) specification.

 */

class LtePdcpHeader : public Header

{

public:

  /**

   * \brief Constructor

   *

   * Creates a null header

   */

  LtePdcpHeader ();

  ~LtePdcpHeader ();

  void SetDcBit (uint8_t dcBit);

  void SetSequenceNumber (uint16_t sequenceNumber);

  uint8_t GetDcBit () const;

  uint16_t GetSequenceNumber () const;

  typedef enum {

    CONTROL_PDU   = 0,

    DATA_PDU      = 1

  } DcBit_t;

  static TypeId GetTypeId (void);

  virtual TypeId GetInstanceTypeId (void) const;

  virtual void Print (std::ostream &os) const;

  virtual uint32_t GetSerializedSize (void) const;

  virtual void Serialize (Buffer::Iterator start) const;

  virtual uint32_t Deserialize (Buffer::Iterator start);

private:

  uint8_t m_dcBit;

  uint16_t m_sequenceNumber;

};

#endif // LTE_PDCP_HEADER_H