The packet header for the Radio Link Control (RLC) protocol packets. More...

#include "lte-rlc-header.h"

Inheritance diagram for ns3::LteRlcHeader:

Collaboration diagram for ns3::LteRlcHeader:

Public Types
enum	ExtensionBit_t { DATA_FIELD_FOLLOWS = 0 , E_LI_FIELDS_FOLLOWS = 1 }
	ExtensionBit_t typedef. More...

enum	FramingInfoByte_t { FIRST_BYTE = 0x00 , NO_FIRST_BYTE = 0x02 , LAST_BYTE = 0x00 , NO_LAST_BYTE = 0x01 }
	FramingInfoByte_t typedef. More...

Public Member Functions
	LteRlcHeader ()
	Constructor. More...

	~LteRlcHeader () override

uint32_t	Deserialize (Buffer::Iterator start) override

uint8_t	GetFramingInfo () const
	Get framing info. More...

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object. More...

SequenceNumber10	GetSequenceNumber () const
	Get sequence number. More...

uint32_t	GetSerializedSize () const override

uint8_t	PopExtensionBit ()
	Pop extension bit. More...

uint16_t	PopLengthIndicator ()
	Pop length indicator. More...

void	Print (std::ostream &os) const override

void	PushExtensionBit (uint8_t extensionBit)
	Push extension bit. More...

void	PushLengthIndicator (uint16_t lengthIndicator)
	Push length indicator. More...

void	Serialize (Buffer::Iterator start) const override

void	SetFramingInfo (uint8_t framingInfo)
	Set framing info. More...

void	SetSequenceNumber (SequenceNumber10 sequenceNumber)
	Set sequence number. More...

Public Member Functions inherited from ns3::Header
	~Header () override

virtual uint32_t	Deserialize (Buffer::Iterator start)=0
	Deserialize the object from a buffer iterator. More...

virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. More...

Public Member Functions inherited from ns3::Chunk
virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const
	Get the value of an attribute, raising fatal errors if unsuccessful. More...

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors. More...

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful. More...

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors. More...

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context. More...

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context. More...

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context. More...

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context. More...

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Header
static TypeId	GetTypeId ()
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Chunk
static TypeId	GetTypeId ()
	Get the type ID. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId ()
	Get the type ID. More...

Private Attributes
std::list< uint8_t >	m_extensionBits
	Includes extensionBit of the fixed part. More...

uint8_t	m_framingInfo
	2 bits More...

uint16_t	m_headerLength
	header length More...

std::list< uint16_t >	m_lengthIndicators
	length indicators More...

SequenceNumber10	m_sequenceNumber
	sequence number More...

Additional Inherited Members
Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes. More...

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed. More...

Related Functions inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More...

Detailed Description

The packet header for the 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.

Definition at line 40 of file lte-rlc-header.h.

Member Enumeration Documentation

◆ ExtensionBit_t

enum ns3::LteRlcHeader::ExtensionBit_t

ExtensionBit_t typedef.

Enumerator
DATA_FIELD_FOLLOWS
E_LI_FIELDS_FOLLOWS

Definition at line 104 of file lte-rlc-header.h.

◆ FramingInfoByte_t

enum ns3::LteRlcHeader::FramingInfoByte_t

FramingInfoByte_t typedef.

Enumerator
FIRST_BYTE
NO_FIRST_BYTE
LAST_BYTE
NO_LAST_BYTE

Definition at line 111 of file lte-rlc-header.h.

Constructor & Destructor Documentation

◆ LteRlcHeader()

ns3::LteRlcHeader::LteRlcHeader ( )

Constructor.

Creates a null header

Definition at line 31 of file lte-rlc-header.cc.

◆ ~LteRlcHeader()

ns3::LteRlcHeader::~LteRlcHeader ( )

override

Definition at line 38 of file lte-rlc-header.cc.

References m_framingInfo, m_headerLength, and m_sequenceNumber.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::LteRlcHeader::Deserialize ( Buffer::Iterator start )

overridevirtual

Parameters

start an iterator which points to where the header should read from.

Returns: the number of bytes read.

This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.

Note that data is not actually removed from the buffer to which the iterator points. Both Packet::RemoveHeader() and Packet::PeekHeader() call Deserialize(), but only the RemoveHeader() has additional statements to remove the header bytes from the underlying buffer and associated metadata.

Implements ns3::Header.

Definition at line 213 of file lte-rlc-header.cc.

References DATA_FIELD_FOLLOWS, E_LI_FIELDS_FOLLOWS, GetSerializedSize(), m_extensionBits, m_framingInfo, m_headerLength, m_lengthIndicators, m_sequenceNumber, ns3::Buffer::Iterator::ReadU8(), and two-ray-to-three-gpp-ch-calibration::start.

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◆ GetFramingInfo()

uint8_t ns3::LteRlcHeader::GetFramingInfo ( ) const

Get framing info.

Returns: framing info

Definition at line 58 of file lte-rlc-header.cc.

References m_framingInfo.

Referenced by ns3::LteRlcUm::ReassembleAndDeliver().

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◆ GetInstanceTypeId()

TypeId ns3::LteRlcHeader::GetInstanceTypeId ( ) const

overridevirtual

Get the most derived TypeId for this Object.

This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.

Returns: The TypeId associated to the most-derived type of this instance.

Implements ns3::ObjectBase.

Definition at line 122 of file lte-rlc-header.cc.

References GetTypeId().

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◆ GetSequenceNumber()

SequenceNumber10 ns3::LteRlcHeader::GetSequenceNumber ( ) const

Get sequence number.

Returns: sequence number

Definition at line 64 of file lte-rlc-header.cc.

References m_sequenceNumber.

Referenced by ns3::LteRlcUm::DoReceivePdu(), and ns3::LteRlcUm::ReassembleAndDeliver().

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◆ GetSerializedSize()

uint32_t ns3::LteRlcHeader::GetSerializedSize ( ) const

overridevirtual

Returns: the expected size of the header.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.

Implements ns3::Header.

Definition at line 161 of file lte-rlc-header.cc.

References m_headerLength.

Referenced by Deserialize(), and ns3::LteRlcUm::DoNotifyTxOpportunity().

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◆ GetTypeId()

TypeId ns3::LteRlcHeader::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 112 of file lte-rlc-header.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ PopExtensionBit()

uint8_t ns3::LteRlcHeader::PopExtensionBit ( )

Pop extension bit.

Returns: the extension bit

Definition at line 94 of file lte-rlc-header.cc.

References m_extensionBits.

Referenced by ns3::LteRlcUm::ReassembleAndDeliver().

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◆ PopLengthIndicator()

uint16_t ns3::LteRlcHeader::PopLengthIndicator ( )

Pop length indicator.

Returns: the length indicator

Definition at line 103 of file lte-rlc-header.cc.

References m_lengthIndicators.

Referenced by ns3::LteRlcUm::ReassembleAndDeliver().

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◆ Print()

void ns3::LteRlcHeader::Print ( std::ostream & os ) const

overridevirtual

Parameters

os output stream This method is used by Packet::Print to print the content of a header as ascii data to a c++ output stream. Although the header is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5

Implements ns3::Header.

Definition at line 128 of file lte-rlc-header.cc.

References m_extensionBits, m_framingInfo, m_headerLength, m_lengthIndicators, and m_sequenceNumber.

◆ PushExtensionBit()

void ns3::LteRlcHeader::PushExtensionBit ( uint8_t extensionBit )

Push extension bit.

Parameters

extensionBit the extension bit

Definition at line 70 of file lte-rlc-header.cc.

References m_extensionBits, and m_headerLength.

Referenced by ns3::LteRlcUm::DoNotifyTxOpportunity().

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◆ PushLengthIndicator()

void ns3::LteRlcHeader::PushLengthIndicator ( uint16_t lengthIndicator )

Push length indicator.

Parameters

lengthIndicator the length indicator

Definition at line 88 of file lte-rlc-header.cc.

References m_lengthIndicators.

Referenced by ns3::LteRlcUm::DoNotifyTxOpportunity().

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◆ Serialize()

void ns3::LteRlcHeader::Serialize ( Buffer::Iterator start ) const

overridevirtual

Parameters

start an iterator which points to where the header should be written.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.

Implements ns3::Header.

Definition at line 167 of file lte-rlc-header.cc.

References ns3::SequenceNumber10::GetValue(), m_extensionBits, m_framingInfo, m_lengthIndicators, m_sequenceNumber, two-ray-to-three-gpp-ch-calibration::start, and ns3::Buffer::Iterator::WriteU8().

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