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ns3::Ipv4EndPointDemux Class Reference

Demultiplexes packets to various transport layer endpoints. More...

#include "ipv4-end-point-demux.h"

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Public Types

typedef std::list< Ipv4EndPoint * > EndPoints
 Container of the IPv4 endpoints.
 
typedef std::list< Ipv4EndPoint * >::iterator EndPointsI
 Iterator to the container of the IPv4 endpoints.
 

Public Member Functions

 Ipv4EndPointDemux ()
 
 ~Ipv4EndPointDemux ()
 
Ipv4EndPointAllocate ()
 Allocate a Ipv4EndPoint.
 
Ipv4EndPointAllocate (Ipv4Address address)
 Allocate a Ipv4EndPoint.
 
Ipv4EndPointAllocate (Ptr< NetDevice > boundNetDevice, Ipv4Address address, uint16_t port)
 Allocate a Ipv4EndPoint.
 
Ipv4EndPointAllocate (Ptr< NetDevice > boundNetDevice, Ipv4Address localAddress, uint16_t localPort, Ipv4Address peerAddress, uint16_t peerPort)
 Allocate a Ipv4EndPoint.
 
Ipv4EndPointAllocate (Ptr< NetDevice > boundNetDevice, uint16_t port)
 Allocate a Ipv4EndPoint.
 
void DeAllocate (Ipv4EndPoint *endPoint)
 Remove a end point.
 
EndPoints GetAllEndPoints ()
 Get the entire list of end points registered.
 
EndPoints Lookup (Ipv4Address daddr, uint16_t dport, Ipv4Address saddr, uint16_t sport, Ptr< Ipv4Interface > incomingInterface)
 lookup for a match with all the parameters.
 
bool LookupLocal (Ptr< NetDevice > boundNetDevice, Ipv4Address addr, uint16_t port)
 Lookup for address and port.
 
bool LookupPortLocal (uint16_t port)
 Lookup for port local.
 
Ipv4EndPointSimpleLookup (Ipv4Address daddr, uint16_t dport, Ipv4Address saddr, uint16_t sport)
 simple lookup for a match with all the parameters.
 

Private Member Functions

uint16_t AllocateEphemeralPort ()
 Allocate an ephemeral port.
 

Private Attributes

EndPoints m_endPoints
 A list of IPv4 end points.
 
uint16_t m_ephemeral
 The ephemeral port.
 
uint16_t m_portFirst
 The first ephemeral port.
 
uint16_t m_portLast
 The last ephemeral port.
 

Detailed Description

Demultiplexes packets to various transport layer endpoints.

This class serves as a lookup table to match partial or full information about a four-tuple to an ns3::Ipv4EndPoint. It internally contains a list of endpoints, and has APIs to add and find endpoints in this demux. This code is shared in common to TCP and UDP protocols in ns3. This demux sits between ns3's layer four and the socket layer

Definition at line 36 of file ipv4-end-point-demux.h.

Member Typedef Documentation

◆ EndPoints

Container of the IPv4 endpoints.

Definition at line 42 of file ipv4-end-point-demux.h.

◆ EndPointsI

typedef std::list<Ipv4EndPoint*>::iterator ns3::Ipv4EndPointDemux::EndPointsI

Iterator to the container of the IPv4 endpoints.

Definition at line 47 of file ipv4-end-point-demux.h.

Constructor & Destructor Documentation

◆ Ipv4EndPointDemux()

ns3::Ipv4EndPointDemux::Ipv4EndPointDemux ( )

Definition at line 21 of file ipv4-end-point-demux.cc.

References NS_LOG_FUNCTION.

◆ ~Ipv4EndPointDemux()

ns3::Ipv4EndPointDemux::~Ipv4EndPointDemux ( )

Definition at line 29 of file ipv4-end-point-demux.cc.

References m_endPoints, and NS_LOG_FUNCTION.

Member Function Documentation

◆ Allocate() [1/5]

Ipv4EndPoint * ns3::Ipv4EndPointDemux::Allocate ( )

Allocate a Ipv4EndPoint.

Returns
an empty Ipv4EndPoint instance

Definition at line 70 of file ipv4-end-point-demux.cc.

References AllocateEphemeralPort(), ns3::Ipv4Address::GetAny(), m_endPoints, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_WARN, and port.

Referenced by Allocate(), ns3::TcpL4Protocol::Allocate(), ns3::TcpL4Protocol::Allocate(), ns3::TcpL4Protocol::Allocate(), ns3::TcpL4Protocol::Allocate(), ns3::TcpL4Protocol::Allocate(), ns3::UdpL4Protocol::Allocate(), ns3::UdpL4Protocol::Allocate(), ns3::UdpL4Protocol::Allocate(), ns3::UdpL4Protocol::Allocate(), and ns3::UdpL4Protocol::Allocate().

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◆ Allocate() [2/5]

Ipv4EndPoint * ns3::Ipv4EndPointDemux::Allocate ( Ipv4Address address)

Allocate a Ipv4EndPoint.

Parameters
addressIPv4 address
Returns
an Ipv4EndPoint instance

Definition at line 86 of file ipv4-end-point-demux.cc.

References AllocateEphemeralPort(), m_endPoints, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_WARN, and port.

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◆ Allocate() [3/5]

Ipv4EndPoint * ns3::Ipv4EndPointDemux::Allocate ( Ptr< NetDevice > boundNetDevice,
Ipv4Address address,
uint16_t port )

Allocate a Ipv4EndPoint.

Parameters
boundNetDeviceBound NetDevice (if any)
addresslocal address
portlocal port
Returns
an Ipv4EndPoint instance

Definition at line 110 of file ipv4-end-point-demux.cc.

References LookupLocal(), m_endPoints, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_WARN, and port.

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◆ Allocate() [4/5]

Ipv4EndPoint * ns3::Ipv4EndPointDemux::Allocate ( Ptr< NetDevice > boundNetDevice,
Ipv4Address localAddress,
uint16_t localPort,
Ipv4Address peerAddress,
uint16_t peerPort )

Allocate a Ipv4EndPoint.

Parameters
boundNetDeviceBound NetDevice (if any)
localAddresslocal address
localPortlocal port
peerAddresspeer address
peerPortpeer port
Returns
an Ipv4EndPoint instance

Definition at line 125 of file ipv4-end-point-demux.cc.

References m_endPoints, NS_LOG_DEBUG, NS_LOG_FUNCTION, and NS_LOG_WARN.

◆ Allocate() [5/5]

Ipv4EndPoint * ns3::Ipv4EndPointDemux::Allocate ( Ptr< NetDevice > boundNetDevice,
uint16_t port )

Allocate a Ipv4EndPoint.

Parameters
boundNetDeviceBound NetDevice (if any)
portlocal port
Returns
an Ipv4EndPoint instance

Definition at line 102 of file ipv4-end-point-demux.cc.

References Allocate(), ns3::Ipv4Address::GetAny(), NS_LOG_FUNCTION, and port.

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◆ AllocateEphemeralPort()

uint16_t ns3::Ipv4EndPointDemux::AllocateEphemeralPort ( )
private

Allocate an ephemeral port.

Returns
the ephemeral port

Definition at line 399 of file ipv4-end-point-demux.cc.

References LookupPortLocal(), m_ephemeral, m_portFirst, m_portLast, NS_LOG_FUNCTION, and port.

Referenced by Allocate(), and Allocate().

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◆ DeAllocate()

void ns3::Ipv4EndPointDemux::DeAllocate ( Ipv4EndPoint * endPoint)

Remove a end point.

Parameters
endPointthe end point to remove

Definition at line 152 of file ipv4-end-point-demux.cc.

References m_endPoints, and NS_LOG_FUNCTION.

Referenced by ns3::TcpL4Protocol::DeAllocate(), and ns3::UdpL4Protocol::DeAllocate().

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◆ GetAllEndPoints()

Ipv4EndPointDemux::EndPoints ns3::Ipv4EndPointDemux::GetAllEndPoints ( )

Get the entire list of end points registered.

Returns
list of Ipv4EndPoint

Definition at line 170 of file ipv4-end-point-demux.cc.

References m_endPoints, and NS_LOG_FUNCTION.

◆ Lookup()

Ipv4EndPointDemux::EndPoints ns3::Ipv4EndPointDemux::Lookup ( Ipv4Address daddr,
uint16_t dport,
Ipv4Address saddr,
uint16_t sport,
Ptr< Ipv4Interface > incomingInterface )

lookup for a match with all the parameters.

The function will return a list of most-matching EndPoints, in this order:

  1. Full match
  2. All but local address
  3. Only local port and local address match
  4. Only local port match

EndPoint with disabled Rx are skipped.

Parameters
daddrdestination address to test
dportdestination port to test
saddrsource address to test
sportsource port to test
incomingInterfacethe incoming interface
Returns
list of IPv4EndPoints (could be 0 element)

Definition at line 189 of file ipv4-end-point-demux.cc.

References ns3::Ipv4Address::CombineMask(), ns3::Ipv4Address::GetAny(), ns3::Ipv4EndPoint::GetBoundNetDevice(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4EndPoint::GetLocalAddress(), ns3::Ipv4EndPoint::GetLocalPort(), ns3::Ipv4InterfaceAddress::GetMask(), ns3::Ipv4EndPoint::GetPeerAddress(), ns3::Ipv4EndPoint::GetPeerPort(), ns3::Ipv4Mask::GetPrefixLength(), ns3::Ipv4EndPoint::IsRxEnabled(), m_endPoints, NS_ABORT_MSG_IF, NS_LOG_DEBUG, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by ns3::TcpL4Protocol::Receive(), and ns3::UdpL4Protocol::Receive().

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◆ LookupLocal()

bool ns3::Ipv4EndPointDemux::LookupLocal ( Ptr< NetDevice > boundNetDevice,
Ipv4Address addr,
uint16_t port )

Lookup for address and port.

Parameters
boundNetDeviceBound NetDevice (if any)
addraddress to test
portport to test
Returns
true if there is a match in EndPoints, false otherwise

Definition at line 55 of file ipv4-end-point-demux.cc.

References m_endPoints, NS_LOG_FUNCTION, and port.

Referenced by Allocate().

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◆ LookupPortLocal()

bool ns3::Ipv4EndPointDemux::LookupPortLocal ( uint16_t port)

Lookup for port local.

Parameters
portport to test
Returns
true if a port local is in EndPoints, false otherwise

Definition at line 41 of file ipv4-end-point-demux.cc.

References m_endPoints, NS_LOG_FUNCTION, and port.

Referenced by AllocateEphemeralPort().

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◆ SimpleLookup()

Ipv4EndPoint * ns3::Ipv4EndPointDemux::SimpleLookup ( Ipv4Address daddr,
uint16_t dport,
Ipv4Address saddr,
uint16_t sport )

simple lookup for a match with all the parameters.

Parameters
daddrdestination address to test
dportdestination port to test
saddrsource address to test
sportsource port to test
Returns
IPv4EndPoint (0 if not found)

Definition at line 357 of file ipv4-end-point-demux.cc.

References ns3::Ipv4Address::GetAny(), m_endPoints, and NS_LOG_FUNCTION.

Referenced by ns3::TcpL4Protocol::ReceiveIcmp(), and ns3::UdpL4Protocol::ReceiveIcmp().

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Member Data Documentation

◆ m_endPoints

EndPoints ns3::Ipv4EndPointDemux::m_endPoints
private

◆ m_ephemeral

uint16_t ns3::Ipv4EndPointDemux::m_ephemeral
private

The ephemeral port.

Definition at line 172 of file ipv4-end-point-demux.h.

Referenced by AllocateEphemeralPort().

◆ m_portFirst

uint16_t ns3::Ipv4EndPointDemux::m_portFirst
private

The first ephemeral port.

Definition at line 182 of file ipv4-end-point-demux.h.

Referenced by AllocateEphemeralPort().

◆ m_portLast

uint16_t ns3::Ipv4EndPointDemux::m_portLast
private

The last ephemeral port.

Definition at line 177 of file ipv4-end-point-demux.h.

Referenced by AllocateEphemeralPort().


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