/usr/include/ns3.27/ns3/lte-rlc-am-header.h is in libns3-dev 3.27+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* 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_RLC_AM_HEADER_H
#define LTE_RLC_AM_HEADER_H
#include "ns3/header.h"
#include "ns3/lte-rlc-sequence-number.h"
#include <list>
namespace ns3 {
/**
* \ingroup lte
* \brief The packet header for the AM Radio Link Control (RLC) protocol packets
*
* This class has fields corresponding to those in an RLC header as well as
* methods for serialization to and deserialization from a byte buffer.
* It follows 3GPP TS 36.322 Radio Link Control (RLC) protocol specification.
*/
class LteRlcAmHeader : public Header
{
public:
/**
* \brief Constructor
*
* Creates a null header
*/
LteRlcAmHeader ();
~LteRlcAmHeader ();
/// Set data PDU function
void SetDataPdu (void);
/**
* Set control PDU function
*
* \param controlPduType
*/
void SetControlPdu (uint8_t controlPduType);
/**
* Is data PDU function
* \returns true if data PDU
*/
bool IsDataPdu (void) const;
/**
* Is control PDU function
* \returns true if control PDU
*/
bool IsControlPdu (void) const;
/// DataControlPdu_t enumeration
typedef enum {
CONTROL_PDU = 0,
DATA_PDU = 1
} DataControlPdu_t; ///< DataControlPdu_t typedef
/// ControlPduType_t enumeration
typedef enum {
STATUS_PDU = 000,
} ControPduType_t; ///< ControPduType_t typedef
//
// DATA PDU
//
/**
* Set sequence number
*
* \param sequenceNumber sequence number
*/
void SetSequenceNumber (SequenceNumber10 sequenceNumber);
/**
* Get sequence number
*
* \returns sequence number
*/
SequenceNumber10 GetSequenceNumber () const;
/**
* Set sequence number
*
* \param framingInfo framing info
*/
void SetFramingInfo (uint8_t framingInfo);
/**
* Get framing info
*
* \returns framing info
*/
uint8_t GetFramingInfo () const;
/// FramingInfoFirstByte_t enumeration
typedef enum {
FIRST_BYTE = 0x00,
NO_FIRST_BYTE = 0x02
} FramingInfoFirstByte_t; ///< FramingInfoFirstByte_t typedef
/// FramingInfoLastByte_t enumeration
typedef enum {
LAST_BYTE = 0x00,
NO_LAST_BYTE = 0x01
} FramingInfoLastByte_t; ///< FramingInfoLastByte_t typedef
/**
* Push extension bit function
*
* \param extensionBit the extension bit
*/
void PushExtensionBit (uint8_t extensionBit);
/**
* Push length indicator function
*
* \param lengthIndicator the length indicator
*/
void PushLengthIndicator (uint16_t lengthIndicator);
/**
* Pop extension bit function
*
* \returns the extension bit
*/
uint8_t PopExtensionBit (void);
/**
* Pop length indicator function
*
* \returns the length indicator
*/
uint16_t PopLengthIndicator (void);
/// ExtensionBit_t typedef
typedef enum {
DATA_FIELD_FOLLOWS = 0,
E_LI_FIELDS_FOLLOWS = 1
} ExtensionBit_t; ///< ExtensionBit_t typedef
/**
* Pop extension bit function
*
* \param resegFlag resegmentation flag
*/
void SetResegmentationFlag (uint8_t resegFlag);
/**
* Get resegmentation flag function
*
* \returns resegmentation flag
*/
uint8_t GetResegmentationFlag () const;
/// ResegmentationFlag_t typedef
typedef enum {
PDU = 0,
SEGMENT = 1
} ResegmentationFlag_t; ///< ResegmentationFlag_t typedef
/**
* Set polling bit function
*
* \param pollingBit polling bit
*/
void SetPollingBit (uint8_t pollingBit);
/**
* Get polling bit function
*
* \returns polling bit
*/
uint8_t GetPollingBit () const;
/// PollingBit_t enumeration
typedef enum {
STATUS_REPORT_NOT_REQUESTED = 0,
STATUS_REPORT_IS_REQUESTED = 1
} PollingBit_t; ///< PollingBit_t typedef
/**
* Set last segment flag function
*
* \param lsf last segment flag
*/
void SetLastSegmentFlag (uint8_t lsf);
/**
* Get last segment flag function
*
* \returns last segment flag
*/
uint8_t GetLastSegmentFlag () const;
/// LastSegmentFlag_t typedef
typedef enum {
NO_LAST_PDU_SEGMENT = 0,
LAST_PDU_SEGMENT = 1
} LastSegmentFlag_t; ///< LastSegmentFlag_t enumeration
/**
* Set segment offset function
*
* \param segmentOffset segment offset
*/
void SetSegmentOffset (uint16_t segmentOffset);
/**
* Get segment offset function
*
* \returns segment offset
*/
uint16_t GetSegmentOffset () const;
/**
* Get last offset function
*
* \returns last offset
*/
uint16_t GetLastOffset () const;
//
// CONTROL PDU
//
/**
* Set ack sn function
*
* \param ackSn ack sn
*/
void SetAckSn (SequenceNumber10 ackSn);
/**
* Get ack sn function
*
* \returns sequence numbr
*/
SequenceNumber10 GetAckSn () const;
/**
* \brief Get the type ID.
* \return the object TypeId
*/
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);
/**
*
*
* \param bytes max allowed CONTROL PDU size
*
* \return true if one more NACK would fit in the CONTROL PDU; false otherwise
*/
bool OneMoreNackWouldFitIn (uint16_t bytes);
/**
* Add one more NACK to the CONTROL PDU
*
* \param nack
*/
void PushNack (int nack);
/**
*
*
* \param nack SN of the NACK
*
* \return true if the NACK is present in the STATUS PDU, false otherwise
*/
bool IsNackPresent (SequenceNumber10 nack);
/**
* Retrieve one NACK from the CONTROL PDU
*
*
* \return the SN >= 0 of the next nack; returns -1 if no NACK is left
*/
int PopNack (void);
private:
uint16_t m_headerLength; ///< header length
uint8_t m_dataControlBit; ///< data control bit
// Data PDU fields
uint8_t m_resegmentationFlag; ///< resegmentation flag
uint8_t m_pollingBit; ///< polling bit
uint8_t m_framingInfo; ///< 2 bits
SequenceNumber10 m_sequenceNumber; ///< sequence number
uint8_t m_lastSegmentFlag; ///< last segment flag
uint16_t m_segmentOffset; ///< segment offset
uint16_t m_lastOffset; ///< last offset
std::list <uint8_t> m_extensionBits; ///< Includes extensionBit of the fixed part
std::list <uint16_t> m_lengthIndicators; ///< length indicators
// Control PDU fields
uint8_t m_controlPduType; ///< control PDU type
// Status PDU fields
SequenceNumber10 m_ackSn; ///< ack sn
std::list <int> m_nackSnList; ///< nack sn list
std::list <uint8_t> m_extensionBits1; ///< Includes E1 after ACK_SN
std::list <uint8_t> m_extensionBits2; ///< extension bits 2
};
}; // namespace ns3
#endif // LTE_RLC_AM_HEADER_H
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