#include <wifi-mac-queue.h>

Inheritance diagram for ns3::WifiMacQueue:

Classes
struct	Item

Public Member Functions
Ptr< const Packet >	Dequeue (WifiMacHeader *hdr)

Ptr< const Packet >	DequeueByTidAndAddress (WifiMacHeader *hdr, uint8_t tid, WifiMacHeader::AddressType type, Mac48Address addr)

Ptr< const Packet >	DequeueFirstAvailable (WifiMacHeader hdr, Time &tStamp, const QosBlockedDestinations blockedPackets)

Ptr< const Packet >	DequeueForChannel (WifiMacHeader *hdr, uint16_t channel)

void	Enqueue (Ptr< const Packet > packet, const WifiMacHeader &hdr)

void	Flush (void)

Time	GetMaxDelay (void) const

uint32_t	GetMaxSize (void) const

uint32_t	GetNPacketsByTidAndAddress (uint8_t tid, WifiMacHeader::AddressType type, Mac48Address addr)

uint32_t	GetSize (void)

bool	IsEmpty (void)

bool	IsEmpty (uint16_t channel)

Ptr< const Packet >	Peek (WifiMacHeader *hdr)

Ptr< const Packet >	PeekByTidAndAddress (WifiMacHeader *hdr, uint8_t tid, WifiMacHeader::AddressType type, Mac48Address addr)

Ptr< const Packet >	PeekFirstAvailable (WifiMacHeader hdr, Time &tStamp, const QosBlockedDestinations blockedPackets)

void	PushFront (Ptr< const Packet > packet, const WifiMacHeader &hdr)

bool	Remove (Ptr< const Packet > packet)

void	SetMaxDelay (Time delay)

void	SetMaxSize (uint32_t maxSize)

Public Member Functions inherited from ns3::Object
void	AggregateObject (Ptr< Object > other)

void	Dispose (void)

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount (const SimpleRefCount &o)

uint32_t	GetReferenceCount (void) const

SimpleRefCount &	operator= (const SimpleRefCount &o)

void	Ref (void) const

void	Unref (void) const

Public Member Functions inherited from ns3::ObjectBase
void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)

Private Types
typedef std::list< struct Item >	PacketQueue

typedef std::list< struct Item > ::iterator	PacketQueueI

typedef std::list< struct Item > ::reverse_iterator	PacketQueueRI

Private Member Functions
void	Cleanup (void)

Mac48Address	GetAddressForPacket (enum WifiMacHeader::AddressType type, PacketQueueI)

Private Attributes
Time	m_maxDelay

uint32_t	m_maxSize

WifiMacParameters *	m_parameters

PacketQueue	m_queue

uint32_t	m_size

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	DoDispose (void)

virtual void	DoInitialize (void)

virtual void	NotifyNewAggregate (void)

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)

Detailed Description

This queue implements the timeout procedure described in IEEE Std. 802.11-2007, section 9.9.1.6, paragraph 6.

When a packet is received by the MAC, to be sent to the PHY, it is queued in the internal queue after being tagged by the current time.

When a packet is dequeued, the queue checks its timestamp to verify whether or not it should be dropped. If dot11EDCATableMSDULifetime has elapsed, it is dropped. Otherwise, it is returned to the caller.

Config Paths

ns3::WifiMacQueue is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/BE_EdcaTxopN/Queue
/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/BK_EdcaTxopN/Queue
/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/DcaTxop/Queue
/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/VI_EdcaTxopN/Queue
/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Mac/$ns3::RegularWifiMac/VO_EdcaTxopN/Queue

Attributes

MaxPacketNumber: If a packet arrives when there are already this number of packets, it is dropped.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 400
- Flags: construct write read
MaxDelay: If a packet stays longer than this delay in the queue, it is dropped.
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +10000000000.0ns
- Flags: construct write read

No TraceSources are defined for this type.

Definition at line 53 of file wifi-mac-queue.h.

Member Function Documentation

Ptr< const Packet > ns3::WifiMacQueue::DequeueByTidAndAddress	(	WifiMacHeader *	hdr,
		uint8_t	tid,
		WifiMacHeader::AddressType	type,
		Mac48Address	addr
	)

Searchs and returns, if is present in this queue, first packet having address indicated by type equals to addr, and tid equals to tid. This method removes the packet from this queue. Is typically used by ns3::EdcaTxopN in order to perform correct MSDU aggregation (A-MSDU).

Definition at line 201 of file wifi-mac-queue.cc.

References NS_ASSERT.

Ptr< const Packet > ns3::WifiMacQueue::DequeueFirstAvailable	(	WifiMacHeader *	hdr,
		Time &	tStamp,
		const QosBlockedDestinations *	blockedPackets
	)

Returns first available packet for transmission. A packet could be no available if it's a QoS packet with a tid and an address1 fields equal to tid and addr respectively that index a pending agreement in the BlockAckManager object. So that packet must not be transmitted until reception of an ADDBA response frame from station addressed by addr. This method removes the packet from queue.

Definition at line 377 of file wifi-mac-queue.cc.

uint32_t ns3::WifiMacQueue::GetNPacketsByTidAndAddress	(	uint8_t	tid,
		WifiMacHeader::AddressType	type,
		Mac48Address	addr
	)

Returns number of QoS packets having tid equals to tid and address specified by type equals to addr.

Definition at line 353 of file wifi-mac-queue.cc.

References NS_ASSERT.

bool ns3::WifiMacQueue::IsEmpty ( uint16_t channel )

If packet wasn't tagged with a destination channel and we're requesting a packet on channel 1 (base channel), then return non empty.

Definition at line 261 of file wifi-mac-queue.cc.

Ptr< const Packet > ns3::WifiMacQueue::PeekByTidAndAddress	(	WifiMacHeader *	hdr,
		uint8_t	tid,
		WifiMacHeader::AddressType	type,
		Mac48Address	addr
	)

Searchs and returns, if is present in this queue, first packet having address indicated by type equals to addr, and tid equals to tid. This method doesn't remove the packet from this queue. Is typically used by ns3::EdcaTxopN in order to perform correct MSDU aggregation (A-MSDU).

Definition at line 230 of file wifi-mac-queue.cc.

References NS_ASSERT.

Ptr< const Packet > ns3::WifiMacQueue::PeekFirstAvailable	(	WifiMacHeader *	hdr,
		Time &	tStamp,
		const QosBlockedDestinations *	blockedPackets
	)

Returns first available packet for transmission. The packet isn't removed from queue.

Definition at line 399 of file wifi-mac-queue.cc.

bool ns3::WifiMacQueue::Remove ( Ptr< const Packet > packet )

If exists, removes packet from queue and returns true. Otherwise it takes no effects and return false. Deletion of the packet is performed in linear time (O(n)).

Definition at line 324 of file wifi-mac-queue.cc.

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

src/wifi/model/wifi-mac-queue.h
src/wifi/model/wifi-mac-queue.cc

Classes

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Config Paths

Attributes

Member Function Documentation