An interface for a Controller of OpenFlowSwitchNetDevices. More...

#include "openflow-interface.h"

Inheritance diagram for ns3::ofi::Controller:

Collaboration diagram for ns3::ofi::Controller:

Public Member Functions
	~Controller () override
	Destructor.

virtual void	AddSwitch (Ptr< OpenFlowSwitchNetDevice > swtch)
	Adds a switch to the controller.

virtual void	ReceiveFromSwitch (Ptr< OpenFlowSwitchNetDevice > swtch, ofpbuf *buffer)
	A switch calls this method to pass a message on to the Controller.

void	StartDump (StatsDumpCallback *cb)
	Starts a callback-based, reliable, possibly multi-message reply to a request made by the controller.

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 ()
	Register this type.

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.

Protected Types
typedef std::set< Ptr< OpenFlowSwitchNetDevice > >	Switches_t
	OpenFlowSwitchNetDevice container type.

Protected Member Functions
ofp_flow_mod *	BuildFlow (sw_flow_key key, uint32_t buffer_id, uint16_t command, void *acts, size_t actions_len, int idle_timeout, int hard_timeout)
	Construct flow data from a matching key to build a flow entry for adding, modifying, or deleting a flow.

uint8_t	GetPacketType (ofpbuf *buffer)
	Get the packet type on the buffer, which can then be used to determine how to handle the buffer.

virtual void	SendToSwitch (Ptr< OpenFlowSwitchNetDevice > swtch, void *msg, size_t length)
	However the controller is implemented, this method is to be used to pass a message on to a switch.

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

virtual void	DoDispose ()
	Destructor implementation.

virtual void	DoInitialize ()
	Initialize() implementation.

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
Switches_t	m_switches
	The collection of switches registered to this controller.

Additional Inherited Members
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

An interface for a Controller of OpenFlowSwitchNetDevices.

Follows the OpenFlow specification for a controller.

Definition at line 388 of file openflow-interface.h.

Member Typedef Documentation

◆ Switches_t

typedef std::set<Ptr<OpenFlowSwitchNetDevice> > ns3::ofi::Controller::Switches_t

protected

OpenFlowSwitchNetDevice container type.

Definition at line 481 of file openflow-interface.h.

Constructor & Destructor Documentation

◆ ~Controller()

ns3::ofi::Controller::~Controller ( )

override

Destructor.

Definition at line 674 of file openflow-interface.cc.

References m_switches.

Member Function Documentation

◆ AddSwitch()

void ns3::ofi::Controller::AddSwitch ( Ptr< OpenFlowSwitchNetDevice > swtch )

virtual

Adds a switch to the controller.

Parameters

swtch The switch to register.

Definition at line 680 of file openflow-interface.cc.

References m_switches, and NS_LOG_INFO.

◆ BuildFlow()

ofp_flow_mod * ns3::ofi::Controller::BuildFlow	(	sw_flow_key	key,
		uint32_t	buffer_id,
		uint16_t	command,
		void *	acts,
		size_t	actions_len,
		int	idle_timeout,
		int	hard_timeout )

protected

Construct flow data from a matching key to build a flow entry for adding, modifying, or deleting a flow.

Parameters

key	The matching key data; used to create a flow that matches the packet.
buffer_id	The OpenFlow Buffer ID; used to run the actions on the packet if we add or modify the flow.
command	Whether to add, modify, or delete this flow.
acts	List of actions to execute.
actions_len	Length of the actions buffer.
idle_timeout	Flow expires if left inactive for this amount of time (specify OFP_FLOW_PERMANENT to disable feature).
hard_timeout	Flow expires after this amount of time (specify OFP_FLOW_PERMANENT to disable feature).

Returns: Flow data that when passed to SetFlow will add, modify, or delete a flow it defines.

Definition at line 705 of file openflow-interface.cc.

Referenced by ns3::ofi::DropController::ReceiveFromSwitch(), and ns3::ofi::LearningController::ReceiveFromSwitch().

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◆ GetPacketType()

uint8_t ns3::ofi::Controller::GetPacketType ( ofpbuf * buffer )

protected

Get the packet type on the buffer, which can then be used to determine how to handle the buffer.

Parameters

buffer The packet in OpenFlow buffer format.

Returns: The packet type, as defined in the ofp_type struct.

Definition at line 747 of file openflow-interface.cc.

Referenced by ns3::ofi::DropController::ReceiveFromSwitch(), and ns3::ofi::LearningController::ReceiveFromSwitch().

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◆ GetTypeId()

TypeId ns3::ofi::Controller::GetTypeId ( )

static

Register this type.

Returns: The TypeId.

Definition at line 665 of file openflow-interface.cc.

References ns3::TypeId::SetParent().

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◆ ReceiveFromSwitch()

virtual void ns3::ofi::Controller::ReceiveFromSwitch	(	Ptr< OpenFlowSwitchNetDevice >	swtch,
		ofpbuf *	buffer )

inlinevirtual

A switch calls this method to pass a message on to the Controller.

Parameters

swtch	The switch the message was received from.
buffer	The message.

Reimplemented in ns3::ofi::DropController, and ns3::ofi::LearningController.

Definition at line 412 of file openflow-interface.h.

◆ SendToSwitch()

void ns3::ofi::Controller::SendToSwitch	(	Ptr< OpenFlowSwitchNetDevice >	swtch,
		void *	msg,
		size_t	length )

protectedvirtual

However the controller is implemented, this method is to be used to pass a message on to a switch.

Parameters

swtch	The switch to receive the message.
msg	The message to send.
length	The length of the message.

Definition at line 693 of file openflow-interface.cc.

References m_switches, and NS_LOG_ERROR.

Referenced by ns3::ofi::DropController::ReceiveFromSwitch(), and ns3::ofi::LearningController::ReceiveFromSwitch().

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◆ StartDump()

void ns3::ofi::Controller::StartDump ( StatsDumpCallback * cb )

Starts a callback-based, reliable, possibly multi-message reply to a request made by the controller.

If an incoming request needs to have a reliable reply that might require multiple messages, it can use StartDump() to set up a callback that will be called as buffer space for replies.

A stats request made by the controller is processed by the switch, the switch then calls this method to tell the controller to start asking for information. By default (it can be overridden), the controller stops all work to run through the callback. ReceiveFromSwitch must be defined appropriately to handle the status reply messages generated by the switch, or otherwise the status reply messages will be sent and discarded.

Parameters

cb	The callback data.

Definition at line 756 of file openflow-interface.cc.

References NS_LOG_WARN, ns3::OpenFlowSwitchNetDevice::StatsDone(), ns3::OpenFlowSwitchNetDevice::StatsDump(), and ns3::ofi::StatsDumpCallback::swtch.

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Member Data Documentation

◆ m_switches

Switches_t ns3::ofi::Controller::m_switches

protected

The collection of switches registered to this controller.

Definition at line 482 of file openflow-interface.h.

Referenced by ~Controller(), AddSwitch(), ns3::ofi::DropController::ReceiveFromSwitch(), ns3::ofi::LearningController::ReceiveFromSwitch(), and SendToSwitch().

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

src/openflow/model/openflow-interface.h
src/openflow/model/openflow-interface.cc

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Switches_t

Constructor & Destructor Documentation

◆ ~Controller()

Member Function Documentation

◆ AddSwitch()

◆ BuildFlow()

◆ GetPacketType()

◆ GetTypeId()

◆ ReceiveFromSwitch()

◆ SendToSwitch()

◆ StartDump()

Member Data Documentation

◆ m_switches