Network device transmission queue interface. More...

#include "net-device-queue-interface.h"

Inheritance diagram for ns3::NetDeviceQueueInterface:

Collaboration diagram for ns3::NetDeviceQueueInterface:

Public Types
typedef Callback< uint8_t, Ptr< QueueItem > >	SelectQueueCallback
	Callback invoked to determine the tx queue selected for a given packet. More...

Public Member Functions
	NetDeviceQueueInterface ()
	Constructor. More...

virtual	~NetDeviceQueueInterface ()

template<typename Item >
void	ConnectQueueTraces (Ptr< Queue< Item > > queue, uint8_t txq)
	Connect the traced callbacks of a queue to the static methods of the NetDeviceQueue class to support flow control and dynamic queue limits. More...

void	CreateTxQueues (void)
	Create the device transmission queues. More...

bool	GetLateTxQueuesCreation (void) const
	Get the value of the late TX queues creation flag. More...

uint8_t	GetNTxQueues (void) const
	Get the number of device transmission queues. More...

SelectQueueCallback	GetSelectQueueCallback (void) const
	Get the select queue callback. More...

Ptr< NetDeviceQueue >	GetTxQueue (uint8_t i) const
	Get the i-th transmission queue of the device. More...

void	SetLateTxQueuesCreation (bool value)
	Set the late TX queues creation flag. More...

void	SetSelectQueueCallback (SelectQueueCallback cb)
	Set the select queue callback. More...

void	SetTxQueuesN (uint8_t numTxQueues)
	Set the number of device transmission queues to create. 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::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...

Protected Member Functions
virtual void	DoDispose (void)
	Dispose of the object. More...

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

virtual void	DoInitialize (void)
	Initialize() implementation. 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...

Private Attributes
bool	m_lateTxQueuesCreation
	True if a device wants to create the TX queues by itself. More...

uint8_t	m_numTxQueues
	Number of transmission queues to create. More...

SelectQueueCallback	m_selectQueueCallback
	Select queue callback. More...

std::map< Ptr< QueueBase >, std::vector< CallbackBase > >	m_traceMap
	Map storing all the connected traces. More...

std::vector< Ptr< NetDeviceQueue > >	m_txQueuesVector
	Device transmission queues. More...

Additional Inherited Members
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

Network device transmission queue interface.

Introspection did not find any typical Config paths.

This interface is used by the traffic control layer and by the aggregated device to access the transmission queues of the device. Additionally, through this interface, traffic control aware netdevices can:

set the number of transmission queues
set the method used (by upper layers) to determine the transmission queue in which the netdevice would enqueue a given packet This interface is created and aggregated to a device by the traffic control layer when an Ipv{4,6}Interface is added to the device or a queue disc is installed on the device.

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 120 bytes (on a 64-bit architecture).

Definition at line 218 of file net-device-queue-interface.h.

Member Typedef Documentation

typedef Callback< uint8_t, Ptr<QueueItem> > ns3::NetDeviceQueueInterface::SelectQueueCallback

Callback invoked to determine the tx queue selected for a given packet.

Definition at line 288 of file net-device-queue-interface.h.

Constructor & Destructor Documentation

ns3::NetDeviceQueueInterface::NetDeviceQueueInterface ( )

Constructor.

Creates one NetDeviceQueue by default

Definition at line 161 of file net-device-queue-interface.cc.

References NS_LOG_FUNCTION.

ns3::NetDeviceQueueInterface::~NetDeviceQueueInterface ( )

virtual

Definition at line 168 of file net-device-queue-interface.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

template<typename Item >

void ns3::NetDeviceQueueInterface::ConnectQueueTraces	(	Ptr< Queue< Item > >	queue,
		uint8_t	txq
	)

Connect the traced callbacks of a queue to the static methods of the NetDeviceQueue class to support flow control and dynamic queue limits.

Implementation of the templates declared above.

Parameters

queue	the queue
txq	the index of the tx queue

Definition at line 339 of file net-device-queue-interface.h.

References GetNTxQueues(), m_traceMap, ns3::MakeBoundCallback(), and NS_ASSERT.

Here is the call graph for this function:

void ns3::NetDeviceQueueInterface::CreateTxQueues ( void )

Create the device transmission queues.

Called by the traffic control layer just after aggregating this netdevice queue interface to the netdevice.

Definition at line 221 of file net-device-queue-interface.cc.

References m_numTxQueues, m_txQueuesVector, NS_ABORT_MSG_IF, and NS_LOG_FUNCTION.

Referenced by PointToPointTest::DoRun().

Here is the caller graph for this function:

void ns3::NetDeviceQueueInterface::DoDispose ( void )

protectedvirtual

Dispose of the object.

Reimplemented from ns3::Object.

Definition at line 187 of file net-device-queue-interface.cc.

References ns3::Object::DoDispose(), m_traceMap, m_txQueuesVector, NS_LOG_FUNCTION, and NS_LOG_WARN.

Here is the call graph for this function:

bool ns3::NetDeviceQueueInterface::GetLateTxQueuesCreation ( void ) const

Get the value of the late TX queues creation flag.

Returns: the value of the late TX queues creation flag.

Definition at line 236 of file net-device-queue-interface.cc.

References m_lateTxQueuesCreation.

uint8_t ns3::NetDeviceQueueInterface::GetNTxQueues ( void ) const

Get the number of device transmission queues.

Returns: the number of device transmission queues.

Definition at line 181 of file net-device-queue-interface.cc.

References m_txQueuesVector.

Referenced by ConnectQueueTraces().

Here is the caller graph for this function:

NetDeviceQueueInterface::SelectQueueCallback ns3::NetDeviceQueueInterface::GetSelectQueueCallback ( void ) const

Get the select queue callback.

Returns: the select queue callback.

Called by the traffic control layer to get the select queue callback set by a multi-queue device.

Definition at line 255 of file net-device-queue-interface.cc.

References m_selectQueueCallback.

Ptr< NetDeviceQueue > ns3::NetDeviceQueueInterface::GetTxQueue ( uint8_t i ) const

Get the i-th transmission queue of the device.

Parameters

i	the index of the requested queue.

Returns: the i-th transmission queue of the device.

The index of the first transmission queue is zero.

Definition at line 174 of file net-device-queue-interface.cc.

References m_txQueuesVector, and NS_ASSERT.

Referenced by TcFlowControlTestCase::CheckDeviceQueueStopped().

Here is the caller graph for this function:

TypeId ns3::NetDeviceQueueInterface::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 151 of file net-device-queue-interface.cc.

References ns3::TypeId::SetParent().

Here is the call graph for this function:

void ns3::NetDeviceQueueInterface::SetLateTxQueuesCreation ( bool value )

Set the late TX queues creation flag.

Parameters

value the boolean value

By default, the late TX queues creation flag is false, which leads the traffic control layer to create the TX queues right after the netdevice queue interface is aggregated to the device. Netdevices that want to explicitly create TX queues at a later stage need to set this flag to true in the NotifyNewAggregate method.

Definition at line 242 of file net-device-queue-interface.cc.

References m_lateTxQueuesCreation, and NS_LOG_FUNCTION.

void ns3::NetDeviceQueueInterface::SetSelectQueueCallback ( SelectQueueCallback cb )

Set the select queue callback.

Parameters

cb	the callback to set.

A multi-queue netdevice must call this method from within its NotifyNewAggregate method to set the select queue callback, i.e., the method used to select a device transmission queue for a given packet.

Definition at line 249 of file net-device-queue-interface.cc.

References m_selectQueueCallback.

void ns3::NetDeviceQueueInterface::SetTxQueuesN ( uint8_t numTxQueues )

Set the number of device transmission queues to create.

Parameters

numTxQueues number of device transmission queues to create.

A multi-queue netdevice must call this method from within its NotifyNewAggregate method to set the number of device transmission queues to create.

Definition at line 209 of file net-device-queue-interface.cc.

References m_numTxQueues, m_txQueuesVector, NS_ABORT_MSG_IF, NS_ASSERT, and NS_LOG_FUNCTION.