net.clackrouter.component.simplerouter
Class IPRouteLookup

java.lang.Object
  net.clackrouter.component.base.ClackComponent
      net.clackrouter.component.simplerouter.IPRouteLookup

All Implemented Interfaces:

Alarm

public class IPRouteLookup
extends ClackComponent

Performs route lookup for an IP packet, identifying local packets, setting the output interface for forwarding, or dropping the packet.

Nested Class Summary

Nested classes/interfaces inherited from class net.clackrouter.component.base.ClackComponent

ClackComponent.Waiter

Field Summary

protected java.util.Hashtable	mPortsToInterface
protected RoutingTable	mRtable
static int	NUM_PORTS
static int	PORT_IP_IN
static int	PORT_LOCAL
static int	PORT_NOROUTE
static int	PORT_OUT

Fields inherited from class net.clackrouter.component.base.ClackComponent

componentCell, m_has_error, m_log, m_name, m_num_ports, m_packetcount_in, m_packetcount_out, m_ports, mListeners, mRouter, pendingError, SIGNAL_ERROR_LEN_MSEC, UNIQUE_COUNT, view

Constructor Summary

IPRouteLookup(Router router, java.lang.String name)

Method Summary

void	acceptPacket(VNSPacket packet, int port_number) Accept IP packet and either forward, drop, or pass on for local processing.
protected void	debug_addr_print(IPPacket ippacket)
java.awt.Color	getColor() The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.
javax.swing.JPanel	getPropertiesView() Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state.
RoutingTable	getRoutingTable()
java.util.Properties	getSerializableProperties(boolean isTransient) Serialize the routing table state for reloading the router
protected java.net.InetAddress	getSourceFromRtable(java.net.InetAddress dest) Finds the correct source address for a given destination.
void	initializeProperties(java.util.Properties props) Load and static entries that have been hard-coded into the topo file
protected boolean	ipForward(IPPacket packet) Internal function used to forward a packet, either sending it to the local output port, dropping it, or forwarding it via an output port.
protected boolean	isForUs(IPPacket egg)
void	setRoutingTable(RoutingTable table)
protected void	setupPorts(int numports) Allocates an array of ClackPort objects to be used by this component

Methods inherited from class net.clackrouter.component.base.ClackComponent

createCopy, createInputPullPort, createInputPushPort, createOutputPullPort, createOutputPushPort, error, fireListeners, getComponentCell, getHierarchicalView, getLog, getName, getNumPorts, getPacketCountIn, getPacketCountOut, getPendingError, getPort, getRouter, getTime, getTypeName, getUniqueCount, getView, handlePullRequest, hasError, isHierarchical, isModifying, log, notifyAlarm, poll, registerListener, sendOutPort, setAlarm, setComponentCell, setName, setPendingError, setView, showErrorDialog, signalError, try_repaint, unregisterListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PORT_IP_IN

public static int PORT_IP_IN

PORT_NOROUTE

public static int PORT_NOROUTE

PORT_LOCAL

public static int PORT_LOCAL

PORT_OUT

public static int PORT_OUT

NUM_PORTS

public static int NUM_PORTS

mRtable

protected RoutingTable mRtable

mPortsToInterface

protected java.util.Hashtable mPortsToInterface

Constructor Detail

IPRouteLookup

public IPRouteLookup(Router router,
                     java.lang.String name)

Method Detail

setupPorts

protected void setupPorts(int numports)

Description copied from class: ClackComponent

Allocates an array of ClackPort objects to be used by this component

Overrides:

setupPorts in class ClackComponent

Parameters:

numports - the number of ports to create

acceptPacket

public void acceptPacket(VNSPacket packet,
                         int port_number)

Accept IP packet and either forward, drop, or pass on for local processing.

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

port_number - The number of the port that this packet is arriving on

isForUs

protected boolean isForUs(IPPacket egg)

getSourceFromRtable

protected java.net.InetAddress getSourceFromRtable(java.net.InetAddress dest)

Finds the correct source address for a given destination.

Used in the case of "local packets" such as ICMP messages that need their source address set according to the interface they are being forwarded out of.

Parameters:

dest - destination IP address of the packet

Returns:

getRoutingTable

public RoutingTable getRoutingTable()

setRoutingTable

public void setRoutingTable(RoutingTable table)

ipForward

protected boolean ipForward(IPPacket packet)

Internal function used to forward a packet, either sending it to the local output port, dropping it, or forwarding it via an output port.

Parameters:

packet -

Returns:

getPropertiesView

public javax.swing.JPanel getPropertiesView()

Description copied from class: ClackComponent

Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state. This method creates a default property view, and can be overriden to provide custom properties views

Overrides:

getPropertiesView in class ClackComponent

Returns:

this component's property view

getColor

public java.awt.Color getColor()

Description copied from class: ClackComponent

The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.

Other renderers may ignore this value.

Overrides:

getColor in class ClackComponent

Returns:

the rendering color

debug_addr_print

protected void debug_addr_print(IPPacket ippacket)

initializeProperties

public void initializeProperties(java.util.Properties props)

Load and static entries that have been hard-coded into the topo file

Overrides:

initializeProperties in class ClackComponent

Parameters:

props - all property values serialized for this component

getSerializableProperties

public java.util.Properties getSerializableProperties(boolean isTransient)

Serialize the routing table state for reloading the router

Overrides:

getSerializableProperties in class ClackComponent

Parameters:

isTransient - flag indicating if serialization is transient

Returns:

all property key-value pairs to serialize