a NetDevice to read/write network traffic from/into a netmap file descriptor. More...

#include "netmap-net-device.h"

Inheritance diagram for ns3::NetmapNetDevice:

Collaboration diagram for ns3::NetmapNetDevice:

Public Member Functions
	NetmapNetDevice ()

virtual	~NetmapNetDevice ()

uint32_t	GetBytesInNetmapTxRing ()
	Get the number of bytes currently in the netmap transmission ring.

int	GetSpaceInNetmapTxRing () const
	Get the number of slots currently available in the netmap transmission ring.

void	SetNetDeviceQueue (Ptr< NetDeviceQueue > queue)
	Set the NetDeviceQueue.

void	SetNetmapInterfaceRepresentation (struct netmap_if *nifp)
	Set the netmap interface representation.

void	SetRxRingsInfo (uint32_t nRxRings, uint32_t nRxRingsSlots)
	Set the netmap receiver rings info.

void	SetTxRingsInfo (uint32_t nTxRings, uint32_t nTxRingsSlots)
	Set the netmap transmission rings info.

virtual ssize_t	Write (uint8_t *buffer, size_t length)
	The function Writes a packet into the netmap transmission ring.

Public Member Functions inherited from ns3::FdNetDevice
	FdNetDevice ()
	Constructor for the FdNetDevice.

	FdNetDevice (const FdNetDevice &)=delete

	~FdNetDevice () override
	Destructor for the FdNetDevice.

void	AddLinkChangeCallback (Callback< void > callback) override

Address	GetAddress () const override

Address	GetBroadcast () const override

Ptr< Channel >	GetChannel () const override

FdNetDevice::EncapsulationMode	GetEncapsulationMode () const
	Get the link layer encapsulation mode of this device.

uint32_t	GetIfIndex () const override

uint16_t	GetMtu () const override

Address	GetMulticast (Ipv4Address multicastGroup) const override
	Make and return a MAC multicast address using the provided multicast group.

Address	GetMulticast (Ipv6Address addr) const override
	Get the MAC multicast address corresponding to the IPv6 address provided.

Ptr< Node >	GetNode () const override

bool	IsBridge () const override
	Return true if the net device is acting as a bridge.

bool	IsBroadcast () const override

bool	IsLinkUp () const override

bool	IsMulticast () const override

bool	IsPointToPoint () const override
	Return true if the net device is on a point-to-point link.

bool	NeedsArp () const override

bool	Send (Ptr< Packet > packet, const Address &dest, uint16_t protocolNumber) override

bool	SendFrom (Ptr< Packet > packet, const Address &source, const Address &dest, uint16_t protocolNumber) override

void	SetAddress (Address address) override
	Set the address of this interface.

void	SetEncapsulationMode (FdNetDevice::EncapsulationMode mode)
	Set the link layer encapsulation mode of this device.

void	SetFileDescriptor (int fd)
	Set the associated file descriptor.

void	SetIfIndex (const uint32_t index) override

virtual void	SetIsBroadcast (bool broadcast)
	Set if the NetDevice is able to send Broadcast messages.

virtual void	SetIsMulticast (bool multicast)
	Set if the NetDevice is able to send Multicast messages.

bool	SetMtu (const uint16_t mtu) override

void	SetNode (Ptr< Node > node) override

void	SetPromiscReceiveCallback (NetDevice::PromiscReceiveCallback cb) override

void	SetReceiveCallback (NetDevice::ReceiveCallback cb) override

void	Start (Time tStart)
	Set a start time for the device.

void	Stop (Time tStop)
	Set a stop time for the device.

bool	SupportsSendFrom () const override

Public Member Functions inherited from ns3::NetDevice
	~NetDevice () override

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

	~Object () override
	Destructor.

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

void	Dispose ()
	Dispose of this Object.

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

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

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

template<>
Ptr< Object >	GetObject () const
	Specialization of () for objects of type ns3::Object.

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

template<>
Ptr< Object >	GetObject (TypeId tid) const
	Specialization of (TypeId tid) for objects of type ns3::Object.

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

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

void	UnidirectionalAggregateObject (Ptr< Object > other)
	Aggregate an Object to another Object.

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

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor.

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID.

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

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

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

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

Private Member Functions
Ptr< FdReader >	DoCreateFdReader ()
	Create the FdReader object.

void	DoFinishStartingDevice ()
	Complete additional actions, if any, to spin up down the device.

void	DoFinishStoppingDevice ()
	Complete additional actions, if any, to tear down the device.

virtual void	SyncAndNotifyQueue ()
	This function syncs netmap ring and notifies netdevice queue.

Private Attributes
struct netmap_if *	m_nifp
	Netmap interface representation.

uint32_t	m_nRxRings
	Number of receiver rings.

uint32_t	m_nRxRingsSlots
	Number of slots in the receiver rings.

uint32_t	m_nTxRings
	Number of transmission rings.

uint32_t	m_nTxRingsSlots
	Number of slots in the transmission rings.

Ptr< NetDeviceQueue >	m_queue
	NetDevice queue.

uint8_t	m_syncAndNotifyQueuePeriod
	The period of time in us after which the device syncs the netmap ring and notifies queue status.

std::thread	m_syncAndNotifyQueueThread
	Thread used to perform the flow control.

std::atomic< bool >	m_syncAndNotifyQueueThreadRun
	Running flag of the flow control thread.

uint32_t	m_totalQueuedBytes
	Total queued bytes.

Additional Inherited Members
Public Types inherited from ns3::FdNetDevice
enum	EncapsulationMode { DIX , LLC , DIXPI }
	Enumeration of the types of frames supported in the class. More...

Public Types inherited from ns3::NetDevice
typedef void(*	LinkChangeTracedCallback) ()
	TracedCallback signature for link changed event.

enum	PacketType { PACKET_HOST = 1 , NS3_PACKET_HOST = PACKET_HOST , PACKET_BROADCAST , NS3_PACKET_BROADCAST = PACKET_BROADCAST , PACKET_MULTICAST , NS3_PACKET_MULTICAST = PACKET_MULTICAST , PACKET_OTHERHOST , NS3_PACKET_OTHERHOST = PACKET_OTHERHOST }
	Packet types are used as they are in Linux. More...

typedef Callback< bool, Ptr< NetDevice >, Ptr< const Packet >, uint16_t, const Address &, const Address &, PacketType >	PromiscReceiveCallback

typedef Callback< bool, Ptr< NetDevice >, Ptr< const Packet >, uint16_t, const Address & >	ReceiveCallback

Protected Member Functions inherited from ns3::FdNetDevice
virtual uint8_t *	AllocateBuffer (size_t len)
	Allocate packet buffer.

void	DoDispose () override
	Destructor implementation.

void	DoInitialize () override
	Method Initialization for start and stop attributes.

virtual void	FreeBuffer (uint8_t *buf)
	Free the given packet buffer.

int	GetFileDescriptor () const
	Get the associated file descriptor.

void	ReceiveCallback (uint8_t *buf, ssize_t len)
	Callback to invoke when a new frame is received.

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

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

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Protected Attributes inherited from ns3::FdNetDevice
std::queue< std::pair< uint8_t *, ssize_t > >	m_pendingQueue
	Number of packets that were received and scheduled for read but not yet read.

std::mutex	m_pendingReadMutex
	Mutex to increase pending read counter.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

a NetDevice to read/write network traffic from/into a netmap file descriptor.

A NetmapNetDevice object will read and write packets from/to a netmap file descriptor.

Definition at line 127 of file netmap-net-device.h.

Constructor & Destructor Documentation

◆ NetmapNetDevice()

ns3::NetmapNetDevice::NetmapNetDevice ( )

Definition at line 180 of file netmap-net-device.cc.

References m_nifp, m_nRxRings, m_nRxRingsSlots, m_nTxRings, m_nTxRingsSlots, m_queue, m_syncAndNotifyQueueThreadRun, m_totalQueuedBytes, and NS_LOG_FUNCTION.

◆ ~NetmapNetDevice()

ns3::NetmapNetDevice::~NetmapNetDevice ( )

virtual

Definition at line 193 of file netmap-net-device.cc.

References m_nifp, m_queue, and NS_LOG_FUNCTION.

Member Function Documentation

◆ DoCreateFdReader()

Ptr< FdReader > ns3::NetmapNetDevice::DoCreateFdReader ( )

privatevirtual

Create the FdReader object.

Returns: the created FdReader object

Reimplemented from ns3::FdNetDevice.

Definition at line 201 of file netmap-net-device.cc.

References ns3::Create(), ns3::FdNetDevice::GetMtu(), m_nifp, and NS_LOG_FUNCTION.

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◆ DoFinishStartingDevice()

void ns3::NetmapNetDevice::DoFinishStartingDevice ( )

privatevirtual

Complete additional actions, if any, to spin up down the device.

Reimplemented from ns3::FdNetDevice.

Definition at line 213 of file netmap-net-device.cc.

References m_syncAndNotifyQueueThread, m_syncAndNotifyQueueThreadRun, NS_LOG_FUNCTION, and SyncAndNotifyQueue().

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◆ DoFinishStoppingDevice()

void ns3::NetmapNetDevice::DoFinishStoppingDevice ( )

privatevirtual

Complete additional actions, if any, to tear down the device.

Reimplemented from ns3::FdNetDevice.

Definition at line 222 of file netmap-net-device.cc.

References m_queue, m_syncAndNotifyQueueThread, m_syncAndNotifyQueueThreadRun, and NS_LOG_FUNCTION.

◆ GetBytesInNetmapTxRing()

uint32_t ns3::NetmapNetDevice::GetBytesInNetmapTxRing ( )

Get the number of bytes currently in the netmap transmission ring.

Returns: the number of bytes in the netmap transmission ring.

Definition at line 237 of file netmap-net-device.cc.

References m_nifp, m_nTxRingsSlots, and NS_LOG_FUNCTION.

Referenced by SyncAndNotifyQueue().

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◆ GetSpaceInNetmapTxRing()

int ns3::NetmapNetDevice::GetSpaceInNetmapTxRing ( ) const

Get the number of slots currently available in the netmap transmission ring.

Returns: the number of slots currently available in the netmap transmission ring.

Definition at line 296 of file netmap-net-device.cc.

References m_nifp, and NS_LOG_FUNCTION.

Referenced by SyncAndNotifyQueue().

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◆ GetTypeId()

TypeId ns3::NetmapNetDevice::GetTypeId ( )

static

Get the type ID.

Returns: the object TypeId

Definition at line 164 of file netmap-net-device.cc.

References m_syncAndNotifyQueuePeriod, ns3::MakeUintegerAccessor(), ns3::MakeUintegerChecker(), and ns3::TypeId::SetParent().

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◆ SetNetDeviceQueue()

void ns3::NetmapNetDevice::SetNetDeviceQueue ( Ptr< NetDeviceQueue > queue )

Set the NetDeviceQueue.

Parameters

queue the NetDeviceQueue

Definition at line 262 of file netmap-net-device.cc.

References m_queue, and NS_LOG_FUNCTION.

◆ SetNetmapInterfaceRepresentation()

void ns3::NetmapNetDevice::SetNetmapInterfaceRepresentation ( struct netmap_if * nifp )

Set the netmap interface representation.

Parameters

nifp	the pointer to netmap interface representation

Definition at line 270 of file netmap-net-device.cc.

References m_nifp, and NS_LOG_FUNCTION.

◆ SetRxRingsInfo()

void ns3::NetmapNetDevice::SetRxRingsInfo	(	uint32_t	nRxRings,
		uint32_t	nRxRingsSlots )

Set the netmap receiver rings info.

Parameters

nRxRings	the number of receiver rings
nRxRingsSlots	the number of slots for each receiver ring

Definition at line 287 of file netmap-net-device.cc.

References m_nRxRings, m_nRxRingsSlots, and NS_LOG_FUNCTION.

◆ SetTxRingsInfo()

void ns3::NetmapNetDevice::SetTxRingsInfo	(	uint32_t	nTxRings,
		uint32_t	nTxRingsSlots )

Set the netmap transmission rings info.

Parameters

nTxRings	the number of transmission rings
nTxRingsSlots	the number of slots for each transmission ring

Definition at line 278 of file netmap-net-device.cc.

References m_nTxRings, m_nTxRingsSlots, and NS_LOG_FUNCTION.

◆ SyncAndNotifyQueue()

void ns3::NetmapNetDevice::SyncAndNotifyQueue ( )

privatevirtual

This function syncs netmap ring and notifies netdevice queue.

This function runs in a separate thread.

Definition at line 308 of file netmap-net-device.cc.

References GetBytesInNetmapTxRing(), ns3::FdNetDevice::GetFileDescriptor(), GetSpaceInNetmapTxRing(), m_nifp, m_queue, m_syncAndNotifyQueuePeriod, m_syncAndNotifyQueueThreadRun, m_totalQueuedBytes, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by DoFinishStartingDevice().

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◆ Write()

ssize_t ns3::NetmapNetDevice::Write	(	uint8_t *	buffer,
		size_t	length )

virtual

The function Writes a packet into the netmap transmission ring.

Parameters

buffer	the pointer to packet
length	the packet length

Returns: the number of written bytes

Reimplemented from ns3::FdNetDevice.

Definition at line 349 of file netmap-net-device.cc.

References m_nifp, m_queue, m_totalQueuedBytes, and NS_LOG_FUNCTION.

Member Data Documentation

◆ m_nifp

struct netmap_if* ns3::NetmapNetDevice::m_nifp

private

Netmap interface representation.

Definition at line 196 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), ~NetmapNetDevice(), DoCreateFdReader(), GetBytesInNetmapTxRing(), GetSpaceInNetmapTxRing(), SetNetmapInterfaceRepresentation(), SyncAndNotifyQueue(), and Write().

◆ m_nRxRings

uint32_t ns3::NetmapNetDevice::m_nRxRings

private

Number of receiver rings.

Definition at line 199 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), and SetRxRingsInfo().

◆ m_nRxRingsSlots

uint32_t ns3::NetmapNetDevice::m_nRxRingsSlots

private

Number of slots in the receiver rings.

Definition at line 200 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), and SetRxRingsInfo().

◆ m_nTxRings

uint32_t ns3::NetmapNetDevice::m_nTxRings

private

Number of transmission rings.

Definition at line 197 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), and SetTxRingsInfo().

◆ m_nTxRingsSlots

uint32_t ns3::NetmapNetDevice::m_nTxRingsSlots

private

Number of slots in the transmission rings.

Definition at line 198 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), GetBytesInNetmapTxRing(), and SetTxRingsInfo().

◆ m_queue

Ptr<NetDeviceQueue> ns3::NetmapNetDevice::m_queue

private

NetDevice queue.

Definition at line 201 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), ~NetmapNetDevice(), DoFinishStoppingDevice(), SetNetDeviceQueue(), SyncAndNotifyQueue(), and Write().

◆ m_syncAndNotifyQueuePeriod

uint8_t ns3::NetmapNetDevice::m_syncAndNotifyQueuePeriod

private

The period of time in us after which the device syncs the netmap ring and notifies queue status.

Definition at line 205 of file netmap-net-device.h.

Referenced by GetTypeId(), and SyncAndNotifyQueue().

◆ m_syncAndNotifyQueueThread

std::thread ns3::NetmapNetDevice::m_syncAndNotifyQueueThread

private

Thread used to perform the flow control.

Definition at line 203 of file netmap-net-device.h.

Referenced by DoFinishStartingDevice(), and DoFinishStoppingDevice().

◆ m_syncAndNotifyQueueThreadRun

std::atomic<bool> ns3::NetmapNetDevice::m_syncAndNotifyQueueThreadRun

private

Running flag of the flow control thread.

Definition at line 204 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), DoFinishStartingDevice(), DoFinishStoppingDevice(), and SyncAndNotifyQueue().

◆ m_totalQueuedBytes

uint32_t ns3::NetmapNetDevice::m_totalQueuedBytes

private

Total queued bytes.

Definition at line 202 of file netmap-net-device.h.

Referenced by NetmapNetDevice(), SyncAndNotifyQueue(), and Write().

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

src/fd-net-device/model/netmap-net-device.h
src/fd-net-device/model/netmap-net-device.cc

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ NetmapNetDevice()

◆ ~NetmapNetDevice()

Member Function Documentation

◆ DoCreateFdReader()

◆ DoFinishStartingDevice()

◆ DoFinishStoppingDevice()

◆ GetBytesInNetmapTxRing()

◆ GetSpaceInNetmapTxRing()

◆ GetTypeId()

◆ SetNetDeviceQueue()

◆ SetNetmapInterfaceRepresentation()

◆ SetRxRingsInfo()

◆ SetTxRingsInfo()

◆ SyncAndNotifyQueue()

◆ Write()

Member Data Documentation

◆ m_nifp

◆ m_nRxRings

◆ m_nRxRingsSlots

◆ m_nTxRings

◆ m_nTxRingsSlots

◆ m_queue

◆ m_syncAndNotifyQueuePeriod

◆ m_syncAndNotifyQueueThread

◆ m_syncAndNotifyQueueThreadRun

◆ m_totalQueuedBytes