net.onrc.openvirtex.packet

Class AbstractSegment

java.lang.Object

net.onrc.openvirtex.packet.BasePacket

net.onrc.openvirtex.packet.AbstractSegment

All Implemented Interfaces:

IPacket

public abstract class AbstractSegment
extends BasePacket

Base structures shared by L4 segments (refer to TCP, UDP).

Field Summary

Fields

Modifier and Type	Field and Description
protected short	checksum
protected short	destinationPort
protected short	sourcePort

Fields inherited from class net.onrc.openvirtex.packet.BasePacket

parent, payload

Constructor Summary

Constructors

Constructor and Description
AbstractSegment()

Method Summary

Methods

Modifier and Type	Method and Description
IPacket	deserialize(byte[] data, int offset, int length) Deserializes this packet layer and all possible payloads.
short	getChecksum() Gets the checksum
short	getDestinationPort() Gets the destination port
short	getSourcePort() Gets the source port
int	hashCode(int prime) Method for subclass hashCode() to piggyback onto
void	resetChecksum() Reset any checksums as needed, and call resetChecksum on all parents.
void	serialize(ByteBuffer bb, int length) Serialization method that calculates the checksum from pseudo- header.
AbstractSegment	setChecksum(short checksum) Sets the checksum
AbstractSegment	setDestinationPort(short destinationPort) Sets the destination port
AbstractSegment	setSourcePort(short sourcePort) Sets the source port

Methods inherited from class net.onrc.openvirtex.packet.BasePacket

clone, equals, getParent, getPayload, hashCode, setParent, setPayload

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.onrc.openvirtex.packet.IPacket

serialize

Field Detail

sourcePort

protected short sourcePort

destinationPort

protected short destinationPort

checksum

protected short checksum

Constructor Detail

AbstractSegment

public AbstractSegment()

Method Detail

getSourcePort

public short getSourcePort()

Gets the source port

Returns:

the sourcePort

setSourcePort

public AbstractSegment setSourcePort(short sourcePort)

Sets the source port

Parameters:

sourcePort - the sourcePort to set

getDestinationPort

public short getDestinationPort()

Gets the destination port

Returns:

the destinationPort

setDestinationPort

public AbstractSegment setDestinationPort(short destinationPort)

Sets the destination port

Parameters:

destinationPort - the destinationPort to set

getChecksum

public short getChecksum()

Gets the checksum

Returns:

the checksum

setChecksum

public AbstractSegment setChecksum(short checksum)

Sets the checksum

Parameters:

checksum - the checksum to set

resetChecksum

public void resetChecksum()

Description copied from interface: IPacket

Reset any checksums as needed, and call resetChecksum on all parents.

Specified by:

resetChecksum in interface IPacket

Overrides:

resetChecksum in class BasePacket

serialize

public void serialize(ByteBuffer bb,
             int length)

Serialization method that calculates the checksum from pseudo- header.

Parameters:

bb - The ByteBuffer for the data being serialized

l4type - The protocol type

length - length of segment

deserialize

public IPacket deserialize(byte[] data,
                  int offset,
                  int length)

Description copied from interface: IPacket

Deserializes this packet layer and all possible payloads.

offset - offset to start deserializing from

length - length of the data to deserialize

Returns:

the deserialized data

hashCode

public int hashCode(int prime)

Method for subclass hashCode() to piggyback onto