WifiMpdu stores a (const) packet along with a MAC header. More...

#include "wifi-mpdu.h"

Inheritance diagram for ns3::WifiMpdu:

Collaboration diagram for ns3::WifiMpdu:

Classes
struct	OriginalInfo
	Information stored by the original copy only. More...

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

typedef std::list< std::pair< Ptr< constPacket >, AmsduSubframeHeader > >::const_iterator	DeaggregatedMsdusCI
	DeaggregatedMsdusCI typedef.

typedef std::list< WifiMacQueueElem >::iterator	Iterator
	Const iterator typedef.

Public Member Functions
	WifiMpdu (Ptr< const Packet > p, const WifiMacHeader &header, Time stamp=Simulator::Now())
	Create a Wifi MAC queue item containing a packet and a Wifi MAC header.

virtual	~WifiMpdu ()

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

void	AssignSeqNo (uint16_t seqNo)
	Set the sequence number of this MPDU (and of the original copy, if this is an alias) to the given value.

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

Ptr< WifiMpdu >	CreateAlias (uint8_t linkId) const
	Create an alias for this MPDU (which must be an original copy) for transmission on the link with the given ID.

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

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

Time	GetExpiryTime () const

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

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

std::set< uint8_t >	GetInFlightLinkIds () const

Ptr< const WifiMpdu >	GetOriginal () const

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

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

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

AcIndex	GetQueueAc () const
	Get the AC of the queue this item is stored into.

Iterator	GetQueueIt (WmqIteratorTag tag) const

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

Time	GetTimestamp () const

bool	HasSeqNoAssigned () const

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

bool	IsInFlight () const

bool	IsOriginal () const

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

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

void	ResetInFlight (uint8_t linkId) const
	Mark this MPDU as not being in flight on the given link.

void	SetInFlight (uint8_t linkId) const
	Mark this MPDU as being in flight on the given link.

void	SetQueueIt (std::optional< Iterator > queueIt, WmqIteratorTag tag)
	Set the queue iterator stored by this object.

void	UnassignSeqNo ()
	Record that a sequence number is no (longer) assigned to this MPDU.

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

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor.

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

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

void	Ref () const
	Increment the reference count.

void	Unref () const
	Decrement the reference count.

Private Types
using	InstanceInfo = std::variant<OriginalInfo, Ptr<WifiMpdu>>
	Information stored by the original copy and an alias, respectively.

Private Member Functions
	WifiMpdu ()=default
	Private default constructor (used to construct aliases).

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

OriginalInfo &	GetOriginalInfo ()

const OriginalInfo &	GetOriginalInfo () const

Iterator	GetQueueIt () const

Private Attributes
WifiMacHeader	m_header
	Information stored by both the original copy and the aliases.

InstanceInfo	m_instanceInfo
	information associated with the instance type

Static Private Attributes
static constexpr std::size_t	ALIAS = 1
	index of an alias in the InstanceInfo variant

static constexpr std::size_t	ORIGINAL
	index of original copy in the InstanceInfo variant

Detailed Description

WifiMpdu stores a (const) packet along with a MAC header.

To support 802.11be Multi-Link Operation (MLO), a WifiMpdu variant, referred to as WifiMpdu alias, is added. A WifiMpdu alias stores its own MAC header and a pointer to the original copy of the WifiMpdu.

Definition at line 50 of file wifi-mpdu.h.

Member Typedef Documentation

◆ DeaggregatedMsdus

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

DeaggregatedMsdus typedef.

Definition at line 131 of file wifi-mpdu.h.

◆ DeaggregatedMsdusCI

typedef std::list<std::pair<Ptr<constPacket>,AmsduSubframeHeader>>::const_iterator ns3::WifiMpdu::DeaggregatedMsdusCI

DeaggregatedMsdusCI typedef.

Definition at line 134 of file wifi-mpdu.h.

◆ InstanceInfo

using ns3::WifiMpdu::InstanceInfo = std::variant<OriginalInfo, Ptr<WifiMpdu>>

private

Information stored by the original copy and an alias, respectively.

Definition at line 294 of file wifi-mpdu.h.

◆ Iterator

typedef std::list<WifiMacQueueElem>::iterator ns3::WifiMpdu::Iterator

Const iterator typedef.

Definition at line 150 of file wifi-mpdu.h.

Constructor & Destructor Documentation

◆ WifiMpdu() [1/2]

ns3::WifiMpdu::WifiMpdu	(	Ptr< const Packet >	p,
		const WifiMacHeader &	header,
		Time	stamp = Simulator::Now() )

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.
stamp	the timestamp to associate with the MPDU

Definition at line 26 of file wifi-mpdu.cc.

References ns3::MsduAggregator::Deaggregate(), ns3::WifiMacHeader::IsQosAmsdu(), ns3::WifiMacHeader::IsQosData(), and m_instanceInfo.

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◆ ~WifiMpdu()

ns3::WifiMpdu::~WifiMpdu ( )

virtual

Definition at line 39 of file wifi-mpdu.cc.

References IsQueued(), m_instanceInfo, and NS_ASSERT.

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◆ WifiMpdu() [2/2]

ns3::WifiMpdu::WifiMpdu ( )

privatedefault

Private default constructor (used to construct aliases).

Member Function Documentation

◆ Aggregate()

void ns3::WifiMpdu::Aggregate ( Ptr< const WifiMpdu > 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. If the given MPDU is a null pointer, the effect of this call is to add only an A-MSDU subframe header, thus producing an A-MSDU containing a single MSDU.

Parameters

msdu	the MPDU containing the MSDU to aggregate

Definition at line 162 of file wifi-mpdu.cc.

References ns3::Create(), DoAggregate(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::IsFromDs(), ns3::WifiMacHeader::IsToDs(), m_header, m_instanceInfo, NS_ABORT_MSG_IF, NS_LOG_FUNCTION, ns3::WifiMacHeader::SetAddr3(), and ns3::WifiMacHeader::SetQosAmsdu().

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◆ AssignSeqNo()

void ns3::WifiMpdu::AssignSeqNo ( uint16_t seqNo )

Set the sequence number of this MPDU (and of the original copy, if this is an alias) to the given value.

Also, record that a sequence number has been assigned to this MPDU.

Parameters

seqNo the given sequence number

Definition at line 333 of file wifi-mpdu.cc.

References GetOriginalInfo(), m_header, m_instanceInfo, ns3::WifiMpdu::OriginalInfo::m_seqNoAssigned, NS_LOG_FUNCTION, and ns3::WifiMacHeader::SetSequenceNumber().

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◆ begin()

WifiMpdu::DeaggregatedMsdusCI ns3::WifiMpdu::begin ( ) const

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 359 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_msduList.

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◆ CreateAlias()

Ptr< WifiMpdu > ns3::WifiMpdu::CreateAlias ( uint8_t linkId ) const

Create an alias for this MPDU (which must be an original copy) for transmission on the link with the given ID.

Aliases have their own copy of the MAC header and cannot be used to perform non-const operations on the frame body.

Parameters

linkId the ID of the given link

Returns: an alias for this MPDU

Definition at line 62 of file wifi-mpdu.cc.

References ALIAS, m_header, m_instanceInfo, NS_ABORT_MSG_IF, NS_ASSERT, and NS_LOG_FUNCTION.

◆ DoAggregate()

void ns3::WifiMpdu::DoAggregate ( Ptr< const WifiMpdu > 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 209 of file wifi-mpdu.cc.

References ns3::MsduAggregator::CalculatePadding(), ns3::Create(), m_instanceInfo, NS_ASSERT, NS_LOG_FUNCTION, ns3::AmsduSubframeHeader::SetDestinationAddr(), ns3::AmsduSubframeHeader::SetLength(), and ns3::AmsduSubframeHeader::SetSourceAddr().

Referenced by Aggregate().

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◆ end()

WifiMpdu::DeaggregatedMsdusCI ns3::WifiMpdu::end ( ) const

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 365 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_msduList.

Referenced by grid.TimelinesRenderer::draw_events(), and grid.TimelinesRenderer::draw_ranges().

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◆ GetDestinationAddress()

Mac48Address ns3::WifiMpdu::GetDestinationAddress ( ) const

Return the destination address present in the header.

Returns: the destination address

Definition at line 129 of file wifi-mpdu.cc.

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

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◆ GetExpiryTime()

Time ns3::WifiMpdu::GetExpiryTime ( ) const

Returns: the expiry time of this MPDU

Definition at line 294 of file wifi-mpdu.cc.

References GetQueueIt().

Referenced by Print().

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◆ GetHeader() [1/2]

WifiMacHeader & ns3::WifiMpdu::GetHeader ( )

Get the header stored in this item.

Returns: the header stored in this item.

Definition at line 123 of file wifi-mpdu.cc.

References m_header.

◆ GetHeader() [2/2]

const WifiMacHeader & ns3::WifiMpdu::GetHeader ( ) const

Get the header stored in this item.

Returns: the header stored in this item.

Definition at line 117 of file wifi-mpdu.cc.

References m_header.

◆ GetInFlightLinkIds()

std::set< uint8_t > ns3::WifiMpdu::GetInFlightLinkIds ( ) const

Returns: the set of IDs of the links on which this MPDU is currently in flight

Definition at line 312 of file wifi-mpdu.cc.

References GetQueueIt(), and IsQueued().

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◆ GetOriginal()

Ptr< const WifiMpdu > ns3::WifiMpdu::GetOriginal ( ) const

Returns: the original version of this MPDU

Definition at line 52 of file wifi-mpdu.cc.

References m_instanceInfo.

◆ GetOriginalInfo() [1/2]

WifiMpdu::OriginalInfo & ns3::WifiMpdu::GetOriginalInfo ( )

private

Returns: a reference to the information held by the original copy of the MPDU.

Definition at line 78 of file wifi-mpdu.cc.

References m_instanceInfo.

Referenced by AssignSeqNo(), begin(), end(), GetPacket(), GetQueueIt(), HasSeqNoAssigned(), IsQueued(), and UnassignSeqNo().

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◆ GetOriginalInfo() [2/2]

const WifiMpdu::OriginalInfo & ns3::WifiMpdu::GetOriginalInfo ( ) const

private

Returns: a const reference to the information held by the original copy of the MPDU.

Definition at line 89 of file wifi-mpdu.cc.

References m_instanceInfo.

◆ GetPacket()

Ptr< const Packet > ns3::WifiMpdu::GetPacket ( ) const

Get the packet stored in this item.

Returns: the packet stored in this item.

Definition at line 100 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_packet.

Referenced by GetPacketSize(), GetProtocolDataUnit(), and Print().

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◆ GetPacketSize()

uint32_t ns3::WifiMpdu::GetPacketSize ( ) 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 135 of file wifi-mpdu.cc.

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

Referenced by GetSize(), and Print().

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◆ GetProtocolDataUnit()

Ptr< Packet > ns3::WifiMpdu::GetProtocolDataUnit ( ) 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 153 of file wifi-mpdu.cc.

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

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◆ GetQueueAc()

AcIndex ns3::WifiMpdu::GetQueueAc ( ) const

Get the AC of the queue this item is stored into.

Abort if this item is not stored in a queue.

Returns: the AC of the queue this item is stored into

Definition at line 288 of file wifi-mpdu.cc.

References GetQueueIt().

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◆ GetQueueIt() [1/2]

WifiMpdu::Iterator ns3::WifiMpdu::GetQueueIt ( ) const

private

Returns: the queue iterator stored by this object

Definition at line 281 of file wifi-mpdu.cc.

References GetOriginalInfo(), IsQueued(), ns3::WifiMpdu::OriginalInfo::m_queueIt, and NS_ASSERT.

Referenced by GetExpiryTime(), GetInFlightLinkIds(), GetQueueAc(), GetQueueIt(), IsInFlight(), ResetInFlight(), and SetInFlight().

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◆ GetQueueIt() [2/2]

WifiMpdu::Iterator ns3::WifiMpdu::GetQueueIt ( WmqIteratorTag tag ) const

Parameters

tag	a wifi MAC queue iterator tag (allows only WifiMacQueue to call this method)

Returns: the queue iterator stored by this object

Definition at line 275 of file wifi-mpdu.cc.

References GetQueueIt().

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◆ GetSize()

uint32_t ns3::WifiMpdu::GetSize ( ) const

Return the size of the packet stored by this item, including header size and trailer size.

Returns: the size of the packet stored by this item in bytes.

Definition at line 141 of file wifi-mpdu.cc.

References GetPacketSize(), ns3::WifiMacHeader::GetSerializedSize(), m_header, and ns3::WIFI_MAC_FCS_LENGTH.

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◆ GetTimestamp()

Time ns3::WifiMpdu::GetTimestamp ( ) const

Returns: the time this MPDU was constructed

Definition at line 106 of file wifi-mpdu.cc.

References m_instanceInfo.

◆ HasSeqNoAssigned()

bool ns3::WifiMpdu::HasSeqNoAssigned ( ) const

Returns: whether a sequence number has been assigned to this MPDU

Definition at line 347 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_seqNoAssigned.

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◆ IsFragment()

bool ns3::WifiMpdu::IsFragment ( ) const

Return true if this item contains an MSDU fragment, false otherwise.

Returns: true if this item contains an MSDU fragment, false otherwise

Definition at line 147 of file wifi-mpdu.cc.

References ns3::WifiMacHeader::GetFragmentNumber(), ns3::WifiMacHeader::IsMoreFragments(), and m_header.

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◆ IsInFlight()

bool ns3::WifiMpdu::IsInFlight ( ) const

Returns: true if this MPDU is in flight on any link, false otherwise

Definition at line 327 of file wifi-mpdu.cc.

References GetQueueIt(), and IsQueued().

Referenced by Print().

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◆ IsOriginal()

bool ns3::WifiMpdu::IsOriginal ( ) const

Returns: whether this is the original version of the MPDU

Definition at line 46 of file wifi-mpdu.cc.

References m_instanceInfo.

◆ IsQueued()

bool ns3::WifiMpdu::IsQueued ( ) const

Return true if this item is stored in some queue, false otherwise.

Returns: true if this item is stored in some queue, false otherwise

Definition at line 259 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_queueIt.

Referenced by ~WifiMpdu(), GetInFlightLinkIds(), GetQueueIt(), IsInFlight(), and Print().

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◆ Print()

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

virtual

Print the item contents.

Parameters

os	output stream in which the data should be printed.

Definition at line 371 of file wifi-mpdu.cc.

References GetExpiryTime(), GetPacket(), GetPacketSize(), IsInFlight(), IsQueued(), m_header, ns3::Simulator::Now(), and ns3::Time::US.

Referenced by ns3::operator<<().

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◆ ResetInFlight()

void ns3::WifiMpdu::ResetInFlight ( uint8_t linkId ) const

Mark this MPDU as not being in flight on the given link.

Parameters

linkId the ID of the given link

Definition at line 306 of file wifi-mpdu.cc.

References GetQueueIt().

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◆ SetInFlight()

void ns3::WifiMpdu::SetInFlight ( uint8_t linkId ) const

Mark this MPDU as being in flight on the given link.

Parameters

linkId the ID of the given link

Definition at line 300 of file wifi-mpdu.cc.

References GetQueueIt().

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◆ SetQueueIt()

void ns3::WifiMpdu::SetQueueIt	(	std::optional< Iterator >	queueIt,
		WmqIteratorTag	tag )

Set the queue iterator stored by this object.

Parameters

queueIt	the queue iterator for this object
tag	a wifi MAC queue iterator tag (allows only WifiMacQueue to call this method)

Definition at line 265 of file wifi-mpdu.cc.

References m_instanceInfo, and NS_ABORT_MSG_IF.

◆ UnassignSeqNo()

void ns3::WifiMpdu::UnassignSeqNo ( )

Record that a sequence number is no (longer) assigned to this MPDU.

Definition at line 353 of file wifi-mpdu.cc.

References GetOriginalInfo(), and ns3::WifiMpdu::OriginalInfo::m_seqNoAssigned.

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Member Data Documentation

◆ ALIAS

std::size_t ns3::WifiMpdu::ALIAS = 1

staticconstexprprivate

index of an alias in the InstanceInfo variant

Definition at line 299 of file wifi-mpdu.h.

Referenced by CreateAlias().

◆ m_header

WifiMacHeader ns3::WifiMpdu::m_header

private

Information stored by both the original copy and the aliases.

Wifi MAC header associated with the packet

Definition at line 270 of file wifi-mpdu.h.

Referenced by Aggregate(), AssignSeqNo(), CreateAlias(), GetDestinationAddress(), GetHeader(), GetHeader(), GetProtocolDataUnit(), GetSize(), IsFragment(), and Print().

◆ m_instanceInfo

InstanceInfo ns3::WifiMpdu::m_instanceInfo

private

information associated with the instance type

Definition at line 296 of file wifi-mpdu.h.

Referenced by WifiMpdu(), ~WifiMpdu(), Aggregate(), AssignSeqNo(), CreateAlias(), DoAggregate(), GetOriginal(), GetOriginalInfo(), GetOriginalInfo(), GetTimestamp(), IsOriginal(), and SetQueueIt().

◆ ORIGINAL

std::size_t ns3::WifiMpdu::ORIGINAL

staticconstexprprivate

Initial value:

=

0

index of original copy in the InstanceInfo variant

Definition at line 297 of file wifi-mpdu.h.

The documentation for this class was generated from the following files:

src/wifi/model/wifi-mpdu.h
src/wifi/model/wifi-mpdu.cc

Classes

Public Types

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Typedef Documentation

◆ DeaggregatedMsdus

◆ DeaggregatedMsdusCI

◆ InstanceInfo

◆ Iterator

Constructor & Destructor Documentation

◆ WifiMpdu() [1/2]

◆ ~WifiMpdu()

◆ WifiMpdu() [2/2]

Member Function Documentation

◆ Aggregate()

◆ AssignSeqNo()

◆ begin()

◆ CreateAlias()

◆ DoAggregate()

◆ end()

◆ GetDestinationAddress()

◆ GetExpiryTime()

◆ GetHeader() [1/2]

◆ GetHeader() [2/2]

◆ GetInFlightLinkIds()

◆ GetOriginal()

◆ GetOriginalInfo() [1/2]

◆ GetOriginalInfo() [2/2]

◆ GetPacket()

◆ GetPacketSize()

◆ GetProtocolDataUnit()

◆ GetQueueAc()

◆ GetQueueIt() [1/2]

◆ GetQueueIt() [2/2]

◆ GetSize()

◆ GetTimestamp()

◆ HasSeqNoAssigned()

◆ IsFragment()

◆ IsInFlight()

◆ IsOriginal()

◆ IsQueued()

◆ Print()

◆ ResetInFlight()

◆ SetInFlight()

◆ SetQueueIt()

◆ UnassignSeqNo()

Member Data Documentation

◆ ALIAS

◆ m_header

◆ m_instanceInfo

◆ ORIGINAL