Headers for Block ack request. More...

#include "ctrl-headers.h"

Inheritance diagram for ns3::CtrlBAckRequestHeader:

Collaboration diagram for ns3::CtrlBAckRequestHeader:

Public Member Functions
	CtrlBAckRequestHeader ()

	~CtrlBAckRequestHeader ()

virtual uint32_t	Deserialize (Buffer::Iterator start)

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

virtual uint32_t	GetSerializedSize (void) const

uint16_t	GetStartingSequence (void) const
	Return the starting sequence number. More...

uint16_t	GetStartingSequenceControl (void) const
	Return the starting sequence control. More...

uint8_t	GetTidInfo (void) const
	Return the Traffic ID (TID). More...

bool	IsBasic (void) const
	Check if the current ACK policy is basic (i.e. More...

bool	IsCompressed (void) const
	Check if the current ACK policy is compressed ACK and not multiple TID. More...

bool	IsMultiTid (void) const
	Check if the current ACK policy has multiple TID. More...

bool	MustSendHtImmediateAck (void) const
	Check if the current ACK policy is immediate. More...

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

virtual void	Serialize (Buffer::Iterator start) const

void	SetHtImmediateAck (bool immediateAck)
	Enable or disable HT immediate ACK. More...

void	SetStartingSequence (uint16_t seq)
	Set the starting sequence number from the given raw sequence control field. More...

void	SetTidInfo (uint8_t tid)
	Set Traffic ID (TID). More...

void	SetType (enum BlockAckType type)
	Set the block ACK type. More...

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

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 erros. 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 (void)

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

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

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

Private Member Functions
uint16_t	GetBarControl (void) const
	Return the Block ACK control. More...

void	SetBarControl (uint16_t bar)
	Set the Block ACK control. More...

void	SetStartingSequenceControl (uint16_t seqControl)
	Set the starting sequence control with the given sequence control value. More...

Private Attributes
bool	m_barAckPolicy
	The lsb bit of the BAR control field is used only for the HT (High Throughput) delayed block ack configuration. More...

bool	m_compressed

bool	m_multiTid

uint16_t	m_startingSeq

uint16_t	m_tidInfo

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

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

Detailed Description

Headers for Block ack request.

Introspection did not find any typical Config paths.

802.11n standard includes three types of block ack:

Basic block ack (unique type in 802.11e)
Compressed block ack
Multi-TID block ack For now only basic block ack and compressed block ack are supported. Basic block ack is also default variant.

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 16 bytes (on a 64-bit architecture).

Definition at line 50 of file ctrl-headers.h.

Constructor & Destructor Documentation

ns3::CtrlBAckRequestHeader::CtrlBAckRequestHeader ( )

Definition at line 35 of file ctrl-headers.cc.

References NS_LOG_FUNCTION.

ns3::CtrlBAckRequestHeader::~CtrlBAckRequestHeader ( )

Definition at line 43 of file ctrl-headers.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

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

virtual

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 122 of file ctrl-headers.cc.

References ns3::Buffer::Iterator::GetDistanceFrom(), m_compressed, m_multiTid, NS_FATAL_ERROR, NS_LOG_FUNCTION, ns3::Buffer::Iterator::ReadLsbtohU16(), SetBarControl(), SetStartingSequenceControl(), and visualizer.core::start().

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uint16_t ns3::CtrlBAckRequestHeader::GetBarControl ( void ) const

private

Return the Block ACK control.

Returns: the Block ACK control

Definition at line 146 of file ctrl-headers.cc.

References m_barAckPolicy, m_compressed, m_multiTid, m_tidInfo, and NS_LOG_FUNCTION.

Referenced by Serialize().

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TypeId ns3::CtrlBAckRequestHeader::GetInstanceTypeId ( void ) const

virtual

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 61 of file ctrl-headers.cc.

References GetTypeId(), and NS_LOG_FUNCTION.

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uint32_t ns3::CtrlBAckRequestHeader::GetSerializedSize ( void ) const

virtual

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 75 of file ctrl-headers.cc.

References m_compressed, m_multiTid, m_tidInfo, NS_FATAL_ERROR, and NS_LOG_FUNCTION.

uint16_t ns3::CtrlBAckRequestHeader::GetStartingSequence ( void ) const

Return the starting sequence number.

Returns: the starting sequence number

Definition at line 251 of file ctrl-headers.cc.

References m_startingSeq, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::AggregateToAmpdu(), ns3::EdcaTxopN::MissedBlockAck(), ns3::EdcaTxopN::NeedBarRetransmission(), ns3::MacLow::ReceiveOk(), and ns3::MacLow::SendBlockAckAfterBlockAckRequest().

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uint16_t ns3::CtrlBAckRequestHeader::GetStartingSequenceControl ( void ) const

Return the starting sequence control.

Returns: the starting sequence control

Definition at line 177 of file ctrl-headers.cc.

References m_startingSeq, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::SendBlockAckAfterBlockAckRequest(), and Serialize().

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uint8_t ns3::CtrlBAckRequestHeader::GetTidInfo ( void ) const

Return the Traffic ID (TID).

Returns: TID

Definition at line 243 of file ctrl-headers.cc.

References m_tidInfo, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::GetTid(), ns3::EdcaTxopN::MissedBlockAck(), ns3::EdcaTxopN::MissedCts(), ns3::EdcaTxopN::NeedBarRetransmission(), ns3::MacLow::ReceiveOk(), and ns3::MacLow::SendBlockAckAfterBlockAckRequest().

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TypeId ns3::CtrlBAckRequestHeader::GetTypeId ( void )

static

Definition at line 49 of file ctrl-headers.cc.

References NS_LOG_FUNCTION_NOARGS, and ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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bool ns3::CtrlBAckRequestHeader::IsBasic ( void ) const

Check if the current ACK policy is basic (i.e.

not multiple TID and not compressed ACK).

Returns: true if the current ACK policy is basic, false otherwise

Definition at line 258 of file ctrl-headers.cc.

References m_compressed, m_multiTid, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::SendBlockAckAfterBlockAckRequest().

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bool ns3::CtrlBAckRequestHeader::IsCompressed ( void ) const

Check if the current ACK policy is compressed ACK and not multiple TID.

Returns: true if the current ACK policy is compressed ACK, false otherwise

Definition at line 265 of file ctrl-headers.cc.

References m_compressed, m_multiTid, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::SendBlockAckAfterBlockAckRequest().

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bool ns3::CtrlBAckRequestHeader::IsMultiTid ( void ) const

Check if the current ACK policy has multiple TID.

Returns: true if the current ACK policy has multiple TID, false otherwise

Definition at line 272 of file ctrl-headers.cc.

References m_compressed, m_multiTid, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::ReceiveOk(), and ns3::MacLow::SendBlockAckAfterBlockAckRequest().

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bool ns3::CtrlBAckRequestHeader::MustSendHtImmediateAck ( void ) const

Check if the current ACK policy is immediate.

Returns: true if the current ACK policy is immediate, false otherwise

Definition at line 236 of file ctrl-headers.cc.

References m_barAckPolicy, and NS_LOG_FUNCTION.

Referenced by ns3::EdcaTxopN::MissedAck(), ns3::EdcaTxopN::MissedBlockAck(), and ns3::EdcaTxopN::MissedCts().

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

virtual

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 68 of file ctrl-headers.cc.

References m_startingSeq, m_tidInfo, and NS_LOG_FUNCTION.

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

virtual

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 99 of file ctrl-headers.cc.

References GetBarControl(), GetStartingSequenceControl(), m_compressed, m_multiTid, NS_FATAL_ERROR, NS_LOG_FUNCTION, visualizer.core::start(), and ns3::Buffer::Iterator::WriteHtolsbU16().

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