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
virtual uint32_t	GetSerializedSize (void) const
uint16_t	GetStartingSequence (void) const
uint16_t	GetStartingSequenceControl (void) const
uint8_t	GetTidInfo (void) const
bool	IsBasic (void) const
bool	IsCompressed (void) const
bool	IsMultiTid (void) const
bool	MustSendHtImmediateAck (void) const
virtual void	Print (std::ostream &os) const
virtual void	Serialize (Buffer::Iterator start) const
void	SetHtImmediateAck (bool immediateAck)
void	SetStartingSequence (uint16_t seq)
void	SetTidInfo (uint8_t tid)
void	SetType (enum BlockAckType type)
Public Member Functions inherited from ns3::Header
virtual	~Header ()

Static Public Member Functions
static TypeId	GetTypeId (void)
	This method returns the TypeId associated to ns3::CtrlBAckRequestHeader.

Private Member Functions
uint16_t	GetBarControl (void) const
void	SetBarControl (uint16_t bar)
void	SetStartingSequenceControl (uint16_t seqControl)

Private Attributes
bool	m_barAckPolicy
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)
virtual void	NotifyConstructionCompleted (void)

Detailed Description

Headers for Block ack request.

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.

Definition at line 46 of file ctrl-headers.h.

Constructor & Destructor Documentation

ns3::CtrlBAckRequestHeader::CtrlBAckRequestHeader ( )

Definition at line 32 of file ctrl-headers.cc.

ns3::CtrlBAckRequestHeader::~CtrlBAckRequestHeader ( )

Definition at line 39 of file ctrl-headers.cc.

Member Function Documentation

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

virtual

Parameters

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

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.

Implements ns3::Header.

Definition at line 111 of file ctrl-headers.cc.

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

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

private

Definition at line 134 of file ctrl-headers.cc.

References m_barAckPolicy, m_compressed, m_multiTid, and m_tidInfo.

Referenced by Serialize().

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

virtual

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

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

Implements ns3::ObjectBase.

Definition at line 54 of file ctrl-headers.cc.

References GetTypeId().

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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 66 of file ctrl-headers.cc.

References m_compressed, m_multiTid, m_tidInfo, and NS_FATAL_ERROR.

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

Definition at line 229 of file ctrl-headers.cc.

References m_startingSeq.

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

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

Definition at line 163 of file ctrl-headers.cc.

References m_startingSeq.

Referenced by Serialize().

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

Definition at line 222 of file ctrl-headers.cc.

References m_tidInfo.

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

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TypeId ns3::CtrlBAckRequestHeader::GetTypeId ( void )

static

This method returns the TypeId associated to ns3::CtrlBAckRequestHeader.

No Attributes defined for this type.
No TraceSources defined for this type.

Reimplemented from ns3::Header.

Definition at line 44 of file ctrl-headers.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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

Definition at line 235 of file ctrl-headers.cc.

References m_compressed, and m_multiTid.

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

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

Definition at line 241 of file ctrl-headers.cc.

References m_compressed, and m_multiTid.

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

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

Definition at line 247 of file ctrl-headers.cc.

References m_compressed, and m_multiTid.

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

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

Definition at line 216 of file ctrl-headers.cc.

References m_barAckPolicy.

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 trailer as ascii data to a c++ output stream. Although the trailer 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 60 of file ctrl-headers.cc.

References m_startingSeq, and m_tidInfo.

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 89 of file ctrl-headers.cc.

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

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void ns3::CtrlBAckRequestHeader::SetBarControl ( uint16_t bar )

private

Definition at line 154 of file ctrl-headers.cc.

References m_barAckPolicy, m_compressed, m_multiTid, and m_tidInfo.

Referenced by Deserialize().

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void ns3::CtrlBAckRequestHeader::SetHtImmediateAck ( bool immediateAck )

Definition at line 175 of file ctrl-headers.cc.

References m_barAckPolicy.

void ns3::CtrlBAckRequestHeader::SetStartingSequence ( uint16_t seq )

Definition at line 210 of file ctrl-headers.cc.

References m_startingSeq.

Referenced by ns3::BlockAckManager::ScheduleBlockAckReqIfNeeded().

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void ns3::CtrlBAckRequestHeader::SetStartingSequenceControl ( uint16_t seqControl )

private

Definition at line 169 of file ctrl-headers.cc.

References m_startingSeq.

Referenced by Deserialize().

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void ns3::CtrlBAckRequestHeader::SetTidInfo ( uint8_t tid )

Definition at line 204 of file ctrl-headers.cc.

References m_tidInfo.

Referenced by ns3::BlockAckManager::ScheduleBlockAckReqIfNeeded().

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void ns3::CtrlBAckRequestHeader::SetType ( enum BlockAckType type )

Definition at line 181 of file ctrl-headers.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, m_compressed, m_multiTid, ns3::MULTI_TID_BLOCK_ACK, and NS_FATAL_ERROR.

Referenced by ns3::BlockAckManager::ScheduleBlockAckReqIfNeeded().

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Member Data Documentation

bool ns3::CtrlBAckRequestHeader::m_barAckPolicy

private

The lsb bit of the BAR control field is used only for the HT (High Throughput) delayed block ack configuration. For now only non HT immediate block ack is implemented so this field is here only for a future implementation of HT delayed variant.

Definition at line 83 of file ctrl-headers.h.

Referenced by GetBarControl(), MustSendHtImmediateAck(), SetBarControl(), and SetHtImmediateAck().

bool ns3::CtrlBAckRequestHeader::m_compressed

private

Definition at line 85 of file ctrl-headers.h.

Referenced by Deserialize(), GetBarControl(), GetSerializedSize(), IsBasic(), IsCompressed(), IsMultiTid(), Serialize(), SetBarControl(), and SetType().