org.onosproject.net.packet.packetfilter

Class DefaultPacketInFilter

java.lang.Object

org.onosproject.net.packet.packetfilter.DefaultPacketInFilter

All Implemented Interfaces:

PacketInFilter

public class DefaultPacketInFilter
extends java.lang.Object
implements PacketInFilter

Default implementation of a packet-in filter.

Nested Class Summary

Nested classes/interfaces inherited from interface org.onosproject.net.packet.PacketInFilter

PacketInFilter.FilterAction

Constructor Summary

Constructors

Constructor and Description
DefaultPacketInFilter(int pps, int winSize, int guardTime, int winThres, java.lang.String counterName, PacketInClassifier classifier) Only one filter object per packet type to be associated.

Method Summary

Modifier and Type	Method and Description
int	droppedPackets() Get the count of the dropped packets for this filter type.
boolean	equals(java.lang.Object o)
int	hashCode()
java.lang.String	name() Get the name of the counter.
int	pendingPackets() Get the current value of the count of packets for this particular filter type waiting to get processed.
PacketInFilter.FilterAction	preProcess(PacketContext packet) Returns FilterAction before processing the packet.
void	setGuardTime(int guardTime) Set the Guard time in case WinThres is crossed.
void	setPps(int pps) Set the pps rate for the current filter type to calculate the max counter allowed with window size.
void	setWinSize(int winSize) Set the window size for rate limiting.
void	setWinThres(int winThres) Set the Window Threshold for dropping the packet.
void	stop() Stop the threads running for this filter.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultPacketInFilter

public DefaultPacketInFilter(int pps,
                             int winSize,
                             int guardTime,
                             int winThres,
                             java.lang.String counterName,
                             PacketInClassifier classifier)

Only one filter object per packet type to be associated. Multiple filter types will result in undefined behavior.

Parameters:

pps - Rate at which the packet is accepted in packets per second

winSize - Size of window in milli seconds within which the packet rate will be analyzed

guardTime - Time duration in seconds for which the packet processing will be on hold if there is a continuous window where cross of the rate happens and that window count crosses winThres

winThres - Continuous window threshold after which gaurdTime will be activated

counterName - Name of the counter

classifier - Packet classification

Method Detail

preProcess

public PacketInFilter.FilterAction preProcess(PacketContext packet)

Description copied from interface: PacketInFilter

Returns FilterAction before processing the packet. Decides if the packet is allowed to be processed or not.

Specified by:

preProcess in interface PacketInFilter

Parameters:

packet - PackerContext holding the packet information

Returns:

FilterAction

name

public java.lang.String name()

Description copied from interface: PacketInFilter

Get the name of the counter.

Specified by:

name in interface PacketInFilter

Returns:

name of the counter

pendingPackets

public int pendingPackets()

Description copied from interface: PacketInFilter

Get the current value of the count of packets for this particular filter type waiting to get processed.

Specified by:

pendingPackets in interface PacketInFilter

Returns:

count of packets with current filter type waiting to get processed

droppedPackets

public int droppedPackets()

Description copied from interface: PacketInFilter

Get the count of the dropped packets for this filter type.

Specified by:

droppedPackets in interface PacketInFilter

Returns:

count of dropped packets for this filter type

setPps

public void setPps(int pps)

Description copied from interface: PacketInFilter

Set the pps rate for the current filter type to calculate the max counter allowed with window size.

Specified by:

setPps in interface PacketInFilter

Parameters:

pps - Packet per second rate expected

setWinSize

public void setWinSize(int winSize)

Description copied from interface: PacketInFilter

Set the window size for rate limiting.

Specified by:

setWinSize in interface PacketInFilter

Parameters:

winSize - Window size in milli seconds

setGuardTime

public void setGuardTime(int guardTime)

Description copied from interface: PacketInFilter

Set the Guard time in case WinThres is crossed.

Specified by:

setGuardTime in interface PacketInFilter

Parameters:

guardTime - Guard time in seconds

setWinThres

public void setWinThres(int winThres)

Description copied from interface: PacketInFilter

Set the Window Threshold for dropping the packet.

Specified by:

setWinThres in interface PacketInFilter

Parameters:

winThres - Threshold count of the consecutive windows with packet drops

stop

public void stop()

Description copied from interface: PacketInFilter

Stop the threads running for this filter.

Specified by:

stop in interface PacketInFilter

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object