WifiMacQueueItem stores (const) packets along with their Wifi MAC headers and the time when they were enqueued. More...

#include "wifi-mac-queue-item.h"

Inheritance diagram for ns3::WifiMacQueueItem:

Collaboration diagram for ns3::WifiMacQueueItem:

Classes
struct	QueueIteratorPair
	Information needed to remove an MSDU from the queue. More...

Public Types
typedef std::list< Ptr< WifiMacQueueItem > >::const_iterator	ConstIterator
	Const iterator typedef. More...

typedef std::list< std::pair< Ptr< const Packet >, AmsduSubframeHeader > >	DeaggregatedMsdus
	DeaggregatedMsdus typedef. More...

typedef std::list< std::pair< Ptr< const Packet >, AmsduSubframeHeader > >::const_iterator	DeaggregatedMsdusCI
	DeaggregatedMsdusCI typedef. More...

Public Member Functions
	WifiMacQueueItem (Ptr< const Packet > p, const WifiMacHeader &header)
	Create a Wifi MAC queue item containing a packet and a Wifi MAC header. More...

	WifiMacQueueItem (Ptr< const Packet > p, const WifiMacHeader &header, Time tstamp)
	Create a Wifi MAC queue item containing a packet and a Wifi MAC header. More...

virtual	~WifiMacQueueItem ()

void	Aggregate (Ptr< const WifiMacQueueItem > msdu)
	Aggregate the MSDU contained in the given MPDU to this MPDU (thus constituting an A-MSDU). More...

DeaggregatedMsdusCI	begin (void)
	Get a constant iterator pointing to the first MSDU in the list of aggregated MSDUs. More...

DeaggregatedMsdusCI	end (void)
	Get a constant iterator indicating past-the-last MSDU in the list of aggregated MSDUs. More...

Mac48Address	GetDestinationAddress (void) const
	Return the destination address present in the header. More...

const WifiMacHeader &	GetHeader (void) const
	Get the header stored in this item. More...

WifiMacHeader &	GetHeader (void)
	Get the header stored in this item. More...

Ptr< const Packet >	GetPacket (void) const
	Get the packet stored in this item. More...

uint32_t	GetPacketSize (void) const
	Return the size in bytes of the packet or control header or management header stored by this item. More...

Ptr< Packet >	GetProtocolDataUnit (void) const
	Get the MAC protocol data unit (MPDU) corresponding to this item (i.e. More...

const std::list< QueueIteratorPair > &	GetQueueIteratorPairs (void) const
	Get a const reference to the list of iterators pointing to the positions of the items in the queue. More...

uint32_t	GetSize (void) const
	Return the size of the packet stored by this item, including header size and trailer size. More...

Time	GetTimeStamp (void) const
	Get the timestamp included in this item. More...

bool	IsFragment (void) const
	Return true if this item contains an MSDU fragment, false otherwise. More...

bool	IsQueued (void) const
	Return true if this item is stored in some queue, false otherwise. More...

virtual void	Print (std::ostream &os) const
	Print the item contents. More...

Public Member Functions inherited from ns3::SimpleRefCount< WifiMacQueueItem >
	SimpleRefCount ()
	Default constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment operator. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Private Member Functions
void	DoAggregate (Ptr< const WifiMacQueueItem > msdu)
	Aggregate the MSDU contained in the given MPDU to this MPDU (thus constituting an A-MSDU). More...

Private Attributes
WifiMacHeader	m_header
	Wifi MAC header associated with the packet. More...

DeaggregatedMsdus	m_msduList
	The list of aggregated MSDUs included in this MPDU. More...

Ptr< const Packet >	m_packet
	The packet (MSDU or A-MSDU) contained in this queue item. More...

std::list< QueueIteratorPair >	m_queueIts
	Queue iterators pointing to this MSDU(s), if queued. More...

Time	m_tstamp
	timestamp when the packet arrived at the queue More...

Friends
class	WifiMacQueue

Detailed Description

WifiMacQueueItem stores (const) packets along with their Wifi MAC headers and the time when they were enqueued.

Definition at line 44 of file wifi-mac-queue-item.h.

Member Typedef Documentation

◆ ConstIterator

typedef std::list<Ptr<WifiMacQueueItem> >::const_iterator ns3::WifiMacQueueItem::ConstIterator

Const iterator typedef.

Definition at line 144 of file wifi-mac-queue-item.h.

◆ DeaggregatedMsdus

typedef std::list<std::pair<Ptr<const Packet>, AmsduSubframeHeader> > ns3::WifiMacQueueItem::DeaggregatedMsdus

DeaggregatedMsdus typedef.

Definition at line 126 of file wifi-mac-queue-item.h.

◆ DeaggregatedMsdusCI

typedef std::list<std::pair<Ptr<const Packet>, AmsduSubframeHeader> >::const_iterator ns3::WifiMacQueueItem::DeaggregatedMsdusCI

DeaggregatedMsdusCI typedef.

Definition at line 128 of file wifi-mac-queue-item.h.

Constructor & Destructor Documentation

◆ WifiMacQueueItem() [1/2]

ns3::WifiMacQueueItem::WifiMacQueueItem	(	Ptr< const Packet >	p,
		const WifiMacHeader &	header
	)

Create a Wifi MAC queue item containing a packet and a Wifi MAC header.

Parameters

p	the const packet included in the created item.
header	the Wifi MAC header included in the created item.

Definition at line 36 of file wifi-mac-queue-item.cc.

◆ WifiMacQueueItem() [2/2]

ns3::WifiMacQueueItem::WifiMacQueueItem	(	Ptr< const Packet >	p,
		const WifiMacHeader &	header,
		Time	tstamp
	)

Create a Wifi MAC queue item containing a packet and a Wifi MAC header.

Parameters

p	the const packet included in the created item.
header	the Wifi MAC header included in the created item.
tstamp	the timestamp associated with the created item.

Definition at line 41 of file wifi-mac-queue-item.cc.

References ns3::Packet::Copy(), ns3::MsduAggregator::Deaggregate(), ns3::WifiMacHeader::IsQosAmsdu(), ns3::WifiMacHeader::IsQosData(), and m_msduList.

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◆ ~WifiMacQueueItem()

ns3::WifiMacQueueItem::~WifiMacQueueItem ( )

virtual

Definition at line 52 of file wifi-mac-queue-item.cc.

Member Function Documentation

◆ Aggregate()

void ns3::WifiMacQueueItem::Aggregate ( Ptr< const WifiMacQueueItem > msdu )

Aggregate the MSDU contained in the given MPDU to this MPDU (thus constituting an A-MSDU).

Note that the given MPDU cannot contain an A-MSDU.

Parameters

msdu	the MPDU containing the MSDU to aggregate

Definition at line 114 of file wifi-mac-queue-item.cc.

References DoAggregate(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::IsFromDs(), ns3::WifiMacHeader::IsToDs(), m_header, m_msduList, m_packet, m_queueIts, NS_ABORT_MSG_IF, NS_ASSERT, NS_LOG_FUNCTION, ns3::WifiMacHeader::SetAddr3(), and ns3::WifiMacHeader::SetQosAmsdu().

Referenced by ns3::MsduAggregator::GetNextAmsdu().

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◆ begin()

WifiMacQueueItem::DeaggregatedMsdusCI ns3::WifiMacQueueItem::begin ( void )

Get a constant iterator pointing to the first MSDU in the list of aggregated MSDUs.

Returns: a constant iterator pointing to the first MSDU in the list of aggregated MSDUs

Definition at line 217 of file wifi-mac-queue-item.cc.

References m_msduList.

Referenced by TwoLevelAggregationTest::DoRun().

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◆ DoAggregate()

void ns3::WifiMacQueueItem::DoAggregate ( Ptr< const WifiMacQueueItem > msdu )

private

Aggregate the MSDU contained in the given MPDU to this MPDU (thus constituting an A-MSDU).

Note that the given MPDU cannot contain an A-MSDU.

Parameters

msdu	the MPDU containing the MSDU to aggregate

Definition at line 149 of file wifi-mac-queue-item.cc.

References ns3::Packet::AddAtEnd(), ns3::Packet::AddHeader(), ns3::MsduAggregator::CalculatePadding(), ns3::Packet::Copy(), ns3::Packet::GetSize(), m_msduList, m_packet, m_queueIts, m_tstamp, ns3::Max(), NS_ASSERT, NS_LOG_FUNCTION, ns3::AmsduSubframeHeader::SetDestinationAddr(), ns3::AmsduSubframeHeader::SetLength(), and ns3::AmsduSubframeHeader::SetSourceAddr().

Referenced by Aggregate().

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◆ end()

WifiMacQueueItem::DeaggregatedMsdusCI ns3::WifiMacQueueItem::end ( void )

Get a constant iterator indicating past-the-last MSDU in the list of aggregated MSDUs.

Returns: a constant iterator indicating past-the-last MSDU in the list of aggregated MSDUs

Definition at line 223 of file wifi-mac-queue-item.cc.

References m_msduList.

Referenced by TwoLevelAggregationTest::DoRun().

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◆ GetDestinationAddress()

Mac48Address ns3::WifiMacQueueItem::GetDestinationAddress ( void ) const

Return the destination address present in the header.

Returns: the destination address

Definition at line 75 of file wifi-mac-queue-item.cc.

References ns3::WifiMacHeader::GetAddr1(), and m_header.

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◆ GetHeader() [1/2]

const WifiMacHeader & ns3::WifiMacQueueItem::GetHeader ( void ) const

Get the header stored in this item.

Returns: the header stored in this item.

Definition at line 63 of file wifi-mac-queue-item.cc.

References m_header.

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◆ GetHeader() [2/2]

WifiMacHeader & ns3::WifiMacQueueItem::GetHeader ( void )

Get the header stored in this item.

Returns: the header stored in this item.

Definition at line 69 of file wifi-mac-queue-item.cc.

References m_header.

◆ GetPacket()

Ptr< const Packet > ns3::WifiMacQueueItem::GetPacket ( void ) const

Get the packet stored in this item.

Returns: the packet stored in this item.

Definition at line 57 of file wifi-mac-queue-item.cc.

References m_packet.

Referenced by ns3::FrameExchangeManager::GetFirstFragmentIfNeeded(), ns3::QosTxop::NotifyInternalCollision(), ns3::HtFrameExchangeManager::NotifyReceivedNormalAck(), WifiAcMappingTest::PacketEnqueuedInWifiMacQueue(), ns3::AdhocWifiMac::Receive(), ns3::MacRxMiddle::Receive(), ns3::ApWifiMac::Receive(), ns3::OcbWifiMac::Receive(), ns3::StaWifiMac::Receive(), ns3::MeshWifiInterfaceMac::Receive(), ns3::RegularWifiMac::Receive(), ns3::HeFrameExchangeManager::ReceiveMpdu(), ns3::HtFrameExchangeManager::ReceiveMpdu(), ns3::FrameExchangeManager::ReceiveMpdu(), and ns3::RrMultiUserScheduler::TrySendingBasicTf().

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◆ GetPacketSize()

uint32_t ns3::WifiMacQueueItem::GetPacketSize ( void ) const

Return the size in bytes of the packet or control header or management header stored by this item.

Returns: the size in bytes of the packet or control header or management header stored by this item

Definition at line 87 of file wifi-mac-queue-item.cc.

References ns3::Packet::GetSize(), and m_packet.

Referenced by TwoLevelAggregationTest::DoRun(), ns3::FrameExchangeManager::GetNextFragment(), GetSize(), Print(), and ns3::FrameExchangeManager::StartTransmission().

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◆ GetProtocolDataUnit()

Ptr< Packet > ns3::WifiMacQueueItem::GetProtocolDataUnit ( void ) const

Get the MAC protocol data unit (MPDU) corresponding to this item (i.e.

a copy of the packet stored in this item wrapped with MAC header and trailer)

Returns: the MAC protocol data unit corresponding to this item.

Definition at line 105 of file wifi-mac-queue-item.cc.

References ns3::Packet::AddHeader(), ns3::AddWifiMacTrailer(), ns3::Packet::Copy(), m_header, and m_packet.

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◆ GetQueueIteratorPairs()

const std::list< WifiMacQueueItem::QueueIteratorPair > & ns3::WifiMacQueueItem::GetQueueIteratorPairs ( void ) const

Get a const reference to the list of iterators pointing to the positions of the items in the queue.

The list is empty if the item is not stored in a queue. The list contains multiple iterators in case of A-MSDU that is not stored in the Block Ack Manager retransmit queue.