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

Inheritance diagram for ns3::EpcSgwPgwApplication:

Collaboration diagram for ns3::EpcSgwPgwApplication:

Classes
struct	EnbInfo
class	UeInfo

Public Member Functions
	EpcSgwPgwApplication (const Ptr< VirtualNetDevice > tunDevice, const Ptr< Socket > s1uSocket)
virtual	~EpcSgwPgwApplication (void)
void	AddEnb (uint16_t cellId, Ipv4Address enbAddr, Ipv4Address sgwAddr)
void	AddUe (uint64_t imsi)
virtual void	DoDispose ()
EpcS11SapSgw *	GetS11SapSgw ()
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)
void	SetS11SapMme (EpcS11SapMme *s)
void	SetUeAddress (uint64_t imsi, Ipv4Address ueAddr)
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	Initialize (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)

Private Member Functions
void	DoCreateSessionRequest (EpcS11SapSgw::CreateSessionRequestMessage msg)
void	DoModifyBearerRequest (EpcS11SapSgw::ModifyBearerRequestMessage msg)

Private Attributes
std::map< uint16_t, EnbInfo >	m_enbInfoByCellId
uint16_t	m_gtpuUdpPort
EpcS11SapMme *	m_s11SapMme
EpcS11SapSgw *	m_s11SapSgw
Ptr< Socket >	m_s1uSocket
uint32_t	m_teidCount
Ptr< VirtualNetDevice >	m_tunDevice
std::map< Ipv4Address, Ptr < UeInfo > >	m_ueInfoByAddrMap
std::map< uint64_t, Ptr< UeInfo > >	m_ueInfoByImsiMap

Friends
class	MemberEpcS11SapSgw< EpcSgwPgwApplication >

Additional Inherited Members
Protected Member Functions inherited from ns3::Application
virtual void	DoInitialize (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 48 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 112 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw, 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 125 of file epc-sgw-pgw-application.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::EpcSgwPgwApplication::AddEnb	(	uint16_t	cellId,
		Ipv4Address	enbAddr,
		Ipv4Address	sgwAddr
	)

Let the SGW be aware of a new eNB

Parameters

cellId	the cell identifier
enbAdd	the address of the eNB

Definition at line 223 of file epc-sgw-pgw-application.cc.

References ns3::EpcSgwPgwApplication::EnbInfo::enbAddr, m_enbInfoByCellId, NS_LOG_FUNCTION, and ns3::EpcSgwPgwApplication::EnbInfo::sgwAddr.

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

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void ns3::EpcSgwPgwApplication::AddUe ( uint64_t imsi )

Let the SGW be aware of a new UE

Parameters

imsi	the unique identifier of the UE

Definition at line 233 of file epc-sgw-pgw-application.cc.

References m_ueInfoByImsiMap, and NS_LOG_FUNCTION.

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

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void ns3::EpcSgwPgwApplication::DoCreateSessionRequest ( EpcS11SapSgw::CreateSessionRequestMessage msg )

private

Definition at line 251 of file epc-sgw-pgw-application.cc.

References ns3::EpcS11Sap::Fteid::address, ns3::EpcS11SapMme::CreateSessionResponseMessage::bearerContextsCreated, ns3::EpcS11SapSgw::CreateSessionRequestMessage::bearerContextsToBeCreated, ns3::EpcS11SapMme::BearerContextCreated::bearerLevelQos, ns3::EpcS11SapMme::CreateSessionResponse(), ns3::EpcS11SapMme::BearerContextCreated::epsBearerId, ns3::EpcS11SapSgw::CreateSessionRequestMessage::imsi, m_enbInfoByCellId, m_s11SapMme, m_teidCount, m_ueInfoByImsiMap, NS_ABORT_IF, NS_ASSERT_MSG, NS_LOG_FUNCTION, ns3::EpcS11SapMme::BearerContextCreated::sgwFteid, ns3::EpcS11Sap::Fteid::teid, ns3::EpcS11SapMme::BearerContextCreated::tft, and ns3::EpcS11SapSgw::CreateSessionRequestMessage::uli.

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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 102 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw, m_s1uSocket, ns3::MakeNullCallback(), NS_LOG_FUNCTION, and ns3::Socket::SetRecvCallback().

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void ns3::EpcSgwPgwApplication::DoModifyBearerRequest ( EpcS11SapSgw::ModifyBearerRequestMessage msg )

private

Definition at line 289 of file epc-sgw-pgw-application.cc.

References ns3::EpcS11SapMme::ModifyBearerResponseMessage::cause, ns3::EpcS11Sap::Uli::gci, m_enbInfoByCellId, m_s11SapMme, m_ueInfoByImsiMap, ns3::EpcS11SapMme::ModifyBearerResponse(), NS_ASSERT_MSG, NS_LOG_FUNCTION, ns3::EpcS11SapMme::ModifyBearerResponseMessage::REQUEST_ACCEPTED, ns3::EpcS11Sap::GtpcMessage::teid, and ns3::EpcS11SapSgw::ModifyBearerRequestMessage::uli.

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EpcS11SapSgw * ns3::EpcSgwPgwApplication::GetS11SapSgw ( )

Returns: the SGW side of the S11 SAP

Definition at line 217 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw.

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

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TypeId ns3::EpcSgwPgwApplication::GetTypeId ( void )

static

Reimplemented from ns3::Application.

Definition at line 94 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 170 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