mq is a classful multi-queue aware dummy scheduler. More...

#include "mq-queue-disc.h"

Inheritance diagram for ns3::MqQueueDisc:

Public Member Functions
	MqQueueDisc ()
	MqQueueDisc constructor. More...

virtual	~MqQueueDisc ()

WakeMode	GetWakeMode (void) const
	Return the wake mode adopted by this queue disc. More...

Public Member Functions inherited from ns3::QueueDisc
	QueueDisc (QueueDiscSizePolicy policy=QueueDiscSizePolicy::SINGLE_INTERNAL_QUEUE)
	Constructor. More...

	QueueDisc (QueueDiscSizePolicy policy, QueueSizeUnit unit)
	Constructor. More...

virtual	~QueueDisc ()

void	AddInternalQueue (Ptr< InternalQueue > queue)
	Add an internal queue to the tail of the list of queues. More...

void	AddPacketFilter (Ptr< PacketFilter > filter)
	Add a packet filter to the tail of the list of filters used to classify packets. More...

void	AddQueueDiscClass (Ptr< QueueDiscClass > qdClass)
	Add a queue disc class to the tail of the list of classes. More...

int32_t	Classify (Ptr< QueueDiscItem > item)
	Classify a packet by calling the packet filters, one at a time, until either a filter able to classify the packet is found or all the filters have been processed. More...

Ptr< QueueDiscItem >	Dequeue (void)
	Extract from the queue disc the packet that has been dequeued by calling Peek, if any, or call the private DoDequeue method (which must be implemented by derived classes) to dequeue a packet, otherwise. More...

bool	Enqueue (Ptr< QueueDiscItem > item)
	Pass a packet to store to the queue discipline. More...

QueueSize	GetCurrentSize (void)
	Get the current size of the queue disc in bytes, if operating in bytes mode, or packets, otherwise. More...

Ptr< InternalQueue >	GetInternalQueue (std::size_t i) const
	Get the i-th internal queue. More...

QueueSize	GetMaxSize (void) const
	Get the maximum size of the queue disc. More...

uint32_t	GetNBytes (void) const
	Get the amount of bytes stored by the queue disc. More...

Ptr< NetDevice >	GetNetDevice (void) const
	Get the NetDevice on which this queue discipline is installed. More...

std::size_t	GetNInternalQueues (void) const
	Get the number of internal queues. More...

std::size_t	GetNPacketFilters (void) const
	Get the number of packet filters. More...

uint32_t	GetNPackets (void) const
	Get the number of packets stored by the queue disc. More...

std::size_t	GetNQueueDiscClasses (void) const
	Get the number of queue disc classes. More...

Ptr< PacketFilter >	GetPacketFilter (std::size_t i) const
	Get the i-th packet filter. More...

Ptr< QueueDiscClass >	GetQueueDiscClass (std::size_t i) const
	Get the i-th queue disc class. More...

virtual uint32_t	GetQuota (void) const
	Get the maximum number of dequeue operations following a packet enqueue. More...

const Stats &	GetStats (void)
	Retrieve all the collected statistics. More...

Ptr< const QueueDiscItem >	Peek (void)
	Get a copy of the next packet the queue discipline will extract. More...

void	Run (void)
	Modelled after the Linux function __qdisc_run (net/sched/sch_generic.c) Dequeues multiple packets, until a quota is exceeded or sending a packet to the device failed. More...

bool	SetMaxSize (QueueSize size)
	Set the maximum size of the queue disc. More...

void	SetNetDevice (Ptr< NetDevice > device)
	Set the NetDevice on which this queue discipline is installed. More...

virtual void	SetQuota (const uint32_t quota)
	Set the maximum number of dequeue operations following a packet enqueue. More...

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor. More...

virtual	~Object ()
	Destructor. More...

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together. More...

void	Dispose (void)
	Dispose of this Object. More...

AggregateIterator	GetAggregateIterator (void) const
	Get an iterator to the Objects aggregated to this one. More...

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

template<typename T >
Ptr< T >	GetObject (void) const
	Get a pointer to the requested aggregated Object. More...

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId. More...

void	Initialize (void)
	Invoke DoInitialize on all Objects aggregated to this one. More...

bool	IsInitialized (void) const
	Check if the object has been initialized. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	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...

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)
	Get the type ID. More...

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

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

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

Private Member Functions
virtual bool	CheckConfig (void)
	Check whether the current configuration is correct. More...

virtual Ptr< QueueDiscItem >	DoDequeue (void)
	This function actually extracts a packet from the queue disc. More...

virtual bool	DoEnqueue (Ptr< QueueDiscItem > item)
	This function actually enqueues a packet into the queue disc. More...

virtual Ptr< const QueueDiscItem >	DoPeek (void)
	Return a copy of the next packet the queue disc will extract. More...

virtual void	InitializeParams (void)
	Initialize parameters (if any) before the first packet is enqueued. More...

Additional Inherited Members
Public Types inherited from ns3::QueueDisc
typedef Queue< QueueDiscItem >	InternalQueue
	Internal queues store QueueDiscItem objects. More...

enum	WakeMode { WAKE_ROOT = 0x00, WAKE_CHILD = 0x01 }
	Used to determine whether the queue disc itself or its children must be activated when a netdevice wakes a transmission queue. More...

Static Public Attributes inherited from ns3::QueueDisc
static constexpr const char *	CHILD_QUEUE_DISC_DROP = "(Dropped by child queue disc) "
	Packet dropped by a child queue disc. More...

static constexpr const char *	INTERNAL_QUEUE_DROP = "Dropped by internal queue"
	Packet dropped by an internal queue. More...

Protected Member Functions inherited from ns3::QueueDisc
virtual void	DoDispose (void)
	Dispose of the object. More...

void	DoInitialize (void)
	Check whether the configuration is correct and initialize parameters. More...

void	DropAfterDequeue (Ptr< const QueueDiscItem > item, const char *reason)
	Perform the actions required when the queue disc is notified of a packet dropped after dequeue. More...

void	DropBeforeEnqueue (Ptr< const QueueDiscItem > item, const char *reason)
	Perform the actions required when the queue disc is notified of a packet dropped before enqueue. More...

bool	Mark (Ptr< QueueDiscItem > item, const char *reason)
	Marks the given packet and, if successful, updates the counters associated with the given reason. More...

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object. More...

virtual void	NotifyNewAggregate (void)
	Notify all Objects aggregated to this one of a new Object being aggregated. More...

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

mq is a classful multi-queue aware dummy scheduler.

Introspection did not find any typical Config paths.

It has as many child queue discs as the number of device transmission queues. Packets are directly enqueued into and dequeued from child queue discs.

No Attributes are defined for this type.

Attributes defined in parent class ns3::QueueDisc

Quota: The maximum number of packets dequeued in a qdisc run
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 64
- Flags: construct write read
InternalQueueList: The list of internal queues.
- Set with class: ns3::ObjectPtrContainerValue
- Underlying type: ns3::Ptr< ns3::Queue<QueueDiscItem>>
- Flags: read
PacketFilterList: The list of packet filters.
- Set with class: ns3::ObjectPtrContainerValue
- Underlying type: ns3::Ptr< ns3::PacketFilter>
- Flags: read
QueueDiscClassList: The list of queue disc classes.
- Set with class: ns3::ObjectPtrContainerValue
- Underlying type: ns3::Ptr< ns3::QueueDiscClass>
- Flags: read

No TraceSources are defined for this type.

TraceSources defined in parent class ns3::QueueDisc

Enqueue: Enqueue a packet in the queue disc
Callback signature: ns3::QueueDiscItem::TracedCallback
Dequeue: Dequeue a packet from the queue disc
Callback signature: ns3::QueueDiscItem::TracedCallback
Requeue: Requeue a packet in the queue disc
Callback signature: ns3::QueueDiscItem::TracedCallback
Drop: Drop a packet stored in the queue disc
Callback signature: ns3::QueueDiscItem::TracedCallback
DropBeforeEnqueue: Drop a packet before enqueue
Callback signature: ns3::QueueDiscItem::TracedCallback
DropAfterDequeue: Drop a packet after dequeue
Callback signature: ns3::QueueDiscItem::TracedCallback
Mark: Mark a packet stored in the queue disc
Callback signature: ns3::QueueDiscItem::TracedCallback
PacketsInQueue: Number of packets currently stored in the queue disc
Callback signature: ns3::TracedValueCallback::Uint32
BytesInQueue: Number of bytes currently stored in the queue disc
Callback signature: ns3::TracedValueCallback::Uint32
SojournTime: Sojourn time of the last packet dequeued from the queue disc
Callback signature: ns3::Time::TracedCallback

Size of this type is 928 bytes (on a 64-bit architecture).

Definition at line 36 of file mq-queue-disc.h.

Constructor & Destructor Documentation

◆ MqQueueDisc()

ns3::MqQueueDisc::MqQueueDisc ( )

MqQueueDisc constructor.

Definition at line 41 of file mq-queue-disc.cc.

References NS_LOG_FUNCTION.

◆ ~MqQueueDisc()

ns3::MqQueueDisc::~MqQueueDisc ( )

virtual

Definition at line 47 of file mq-queue-disc.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ CheckConfig()

bool ns3::MqQueueDisc::CheckConfig ( void )

privatevirtual

Check whether the current configuration is correct.

Default objects (such as internal queues) might be created by this method to ensure the configuration is correct.

Returns: true if the configuration is correct, false otherwise

Implements ns3::QueueDisc.

Definition at line 77 of file mq-queue-disc.cc.

References ns3::QueueDisc::GetNInternalQueues(), ns3::QueueDisc::GetNPacketFilters(), NS_LOG_ERROR, and NS_LOG_FUNCTION.

◆ DoDequeue()

Ptr< QueueDiscItem > ns3::MqQueueDisc::DoDequeue ( void )

privatevirtual

This function actually extracts a packet from the queue disc.

Returns: 0 if the operation was not successful; the item otherwise.

Implements ns3::QueueDisc.

Definition at line 65 of file mq-queue-disc.cc.

References NS_FATAL_ERROR.

◆ DoEnqueue()

bool ns3::MqQueueDisc::DoEnqueue ( Ptr< QueueDiscItem > item )

privatevirtual

This function actually enqueues a packet into the queue disc.

Parameters

item	item to enqueue

Returns: True if the operation was successful; false otherwise

Implements ns3::QueueDisc.

Definition at line 59 of file mq-queue-disc.cc.

References NS_FATAL_ERROR.

◆ DoPeek()

Ptr< const QueueDiscItem > ns3::MqQueueDisc::DoPeek ( void )

privatevirtual

Return a copy of the next packet the queue disc will extract.

The implementation of this method is based on the qdisc_peek_dequeued function of the Linux kernel, which dequeues a packet and retains it in the queue disc as a requeued packet. The packet is not traced as requeued, nor is the total count of requeued packets increased. The packet is still considered to be part of the queue disc and the dequeue trace is fired when Dequeue is called and the packet is actually extracted from the queue disc.

This approach is especially recommended for queue discs for which it is not obvious what is the next packet that will be dequeued (e.g., queue discs having multiple internal queues or child queue discs or queue discs that drop packets after dequeue). Subclasses can however provide their own implementation of this method that overrides the default one.

Returns: 0 if the operation was not successful; the packet otherwise.

Reimplemented from ns3::QueueDisc.

Definition at line 71 of file mq-queue-disc.cc.

References NS_FATAL_ERROR.

◆ GetTypeId()

TypeId ns3::MqQueueDisc::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 31 of file mq-queue-disc.cc.

References ns3::TypeId::SetParent().

◆ GetWakeMode()

MqQueueDisc::WakeMode ns3::MqQueueDisc::GetWakeMode ( void ) const

virtual

Return the wake mode adopted by this queue disc.

Returns: the wake mode adopted by this queue disc.

Reimplemented from ns3::QueueDisc.

Definition at line 53 of file mq-queue-disc.cc.

References ns3::QueueDisc::WAKE_CHILD.

◆ InitializeParams()

void ns3::MqQueueDisc::InitializeParams ( void )

privatevirtual

Initialize parameters (if any) before the first packet is enqueued.

Implements ns3::QueueDisc.

Definition at line 97 of file mq-queue-disc.cc.

References NS_LOG_FUNCTION.

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

src/traffic-control/model/mq-queue-disc.h
src/traffic-control/model/mq-queue-disc.cc

Public Member Functions

Static Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Attributes defined in parent class ns3::QueueDisc

TraceSources defined in parent class ns3::QueueDisc

Constructor & Destructor Documentation

◆ MqQueueDisc()

◆ ~MqQueueDisc()

Member Function Documentation

◆ CheckConfig()

◆ DoDequeue()

◆ DoEnqueue()

◆ DoPeek()

◆ GetTypeId()

◆ GetWakeMode()

◆ InitializeParams()