#include <epc-sgw-pgw-application.h>

Inheritance diagram for ns3::EpcSgwPgwApplication:

Collaboration diagram for ns3::EpcSgwPgwApplication:

Classes
class	UeInfo

Public Member Functions
	EpcSgwPgwApplication (const Ptr< VirtualNetDevice > tunDevice, const Ptr< Socket > s1uSocket)
virtual	~EpcSgwPgwApplication (void)
uint32_t	ActivateS1Bearer (Ipv4Address ueAddr, Ipv4Address enbAddr, Ptr< EpcTft > tft)
virtual void	DoDispose ()
void	RecvFromS1uSocket (Ptr< Socket > socket)
bool	RecvFromTunDevice (Ptr< Packet > packet, const Address &source, const Address &dest, uint16_t protocolNumber)
void	SendToS1uSocket (Ptr< Packet > packet, Ipv4Address enbS1uAddress, uint32_t teid)
void	SendToTunDevice (Ptr< Packet > packet, uint32_t teid)
Public Member Functions inherited from ns3::Application
	Application ()
virtual	~Application ()
Ptr< Node >	GetNode () const
void	SetNode (Ptr< Node > node)
void	SetStartTime (Time start)
	Specify application start time.
void	SetStopTime (Time stop)
	Specify application stop time.
Public Member Functions inherited from ns3::Object
	Object ()
virtual	~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	Start (void)
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	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
virtual	~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)
	This method returns the TypeId associated to ns3::Application.

Private Attributes
uint16_t	m_gtpuUdpPort
Ptr< Socket >	m_s1uSocket
uint32_t	m_teidCount
Ptr< VirtualNetDevice >	m_tunDevice
std::map< Ipv4Address, UeInfo >	m_ueInfoMap

Additional Inherited Members
Protected Member Functions inherited from ns3::Application
virtual void	DoStart (void)
Protected Attributes inherited from ns3::Application
Ptr< Node >	m_node
EventId	m_startEvent
Time	m_startTime
EventId	m_stopEvent
Time	m_stopTime

Detailed Description

This application implements the SGW/PGW functionality.

Definition at line 46 of file epc-sgw-pgw-application.h.

Constructor & Destructor Documentation

ns3::EpcSgwPgwApplication::EpcSgwPgwApplication	(	const Ptr< VirtualNetDevice >	tunDevice,
		const Ptr< Socket >	s1uSocket
	)

Constructor that binds the tap device to the callback methods.

Parameters

tunDevice	TUN VirtualNetDevice used to tunnel IP packets from the Gi interface of the PGW/SGW over the internet over GTP-U/UDP/IP on the S1-U interface
s1uSocket	socket used to send GTP-U packets to the eNBs

Definition at line 97 of file epc-sgw-pgw-application.cc.

References m_s1uSocket, ns3::MakeCallback(), NS_LOG_FUNCTION, RecvFromS1uSocket(), and ns3::Socket::SetRecvCallback().

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ns3::EpcSgwPgwApplication::~EpcSgwPgwApplication ( void )

virtual

Destructor

Definition at line 108 of file epc-sgw-pgw-application.cc.

References NS_LOG_FUNCTION_NOARGS.

Member Function Documentation

uint32_t ns3::EpcSgwPgwApplication::ActivateS1Bearer	(	Ipv4Address	ueAddr,
		Ipv4Address	enbAddr,
		Ptr< EpcTft >	tft
	)

Simulates the reception by the PGW of a GTP-C message of type CreateSessionRequest or BearerResourceCommand coming from the MME. This triggers the creation of a new EPS Bearer.

Parameters

bearer	the specification of the EPS Bearer to be created
enbS1uAddress	the IPv4 address at which the SGW can reach the eNB via the S1-U interface
tft	the Traffic Flow Template related to this bearer

Returns: the TunnelEndpointIdentifier of this EPS bearer

Definition at line 115 of file epc-sgw-pgw-application.cc.

References m_teidCount, m_ueInfoMap, NS_ABORT_IF, and NS_LOG_FUNCTION.

Referenced by ns3::EpcHelper::ActivateEpsBearer().

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void ns3::EpcSgwPgwApplication::DoDispose ( void )

virtual

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

It is safe to call GetObject from within this method.

Reimplemented from ns3::Application.

Definition at line 89 of file epc-sgw-pgw-application.cc.

References m_s1uSocket, ns3::MakeNullCallback(), and ns3::Socket::SetRecvCallback().

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TypeId ns3::EpcSgwPgwApplication::GetTypeId ( void )

static

This method returns the TypeId associated to ns3::Application.

This object is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/ApplicationList/[i]

Attributes defined for this type:

StartTime: Time at which the application will start
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +0.0ns
- Flags: construct write read
StopTime: Time at which the application will stop
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +0.0ns
- Flags: construct write read

No TraceSources defined for this type.

Reimplemented from ns3::Application.

Definition at line 81 of file epc-sgw-pgw-application.cc.

References ns3::TypeId::SetParent().

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void ns3::EpcSgwPgwApplication::RecvFromS1uSocket ( Ptr< Socket > socket )

Method to be assigned to the recv callback of the S1-U socket. It is called when the SGW/PGW receives a data packet from the eNB that is to be forwarded to the internet.

Parameters

socket pointer to the S1-U socket

Definition at line 178 of file epc-sgw-pgw-application.cc.

References ns3::GtpuHeader::GetTeid(), m_s1uSocket, NS_ASSERT, NS_LOG_FUNCTION, ns3::Socket::Recv(), ns3::Packet::RemoveHeader(), ns3::Packet::RemovePacketTag(), and SendToTunDevice().

Referenced by EpcSgwPgwApplication().

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bool ns3::EpcSgwPgwApplication::RecvFromTunDevice	(	Ptr< Packet >	packet,
		const Address &	source,
		const Address &	dest,
		uint16_t	protocolNumber
	)

Method to be assigned to the callback of the Gi TUN VirtualNetDevice. It is called when the SGW/PGW receives a data packet from the internet (including IP headers) that is to be sent to the UE via its associated eNB, tunneling IP over GTP-U/UDP/IP.

Parameters