pcpp::NullLoopbackLayer Class Reference

#include <NullLoopbackLayer.h>

Inheritance diagram for pcpp::NullLoopbackLayer:

Public Member Functions
	NullLoopbackLayer (uint8_t *data, size_t dataLen, Packet *packet)
	NullLoopbackLayer (uint32_t family)
	~NullLoopbackLayer () override=default
uint32_t	getFamily () const
void	setFamily (uint32_t family)
void	parseNextLayer () override
size_t	getHeaderLen () const override
void	computeCalculateFields () override
std::string	toString () const override
OsiModelLayer	getOsiModelLayer () const override
Public Member Functions inherited from pcpp::Layer
	~Layer () override
Layer *	getNextLayer () const
Layer *	getPrevLayer () const
ProtocolType	getProtocol () const
bool	isMemberOfProtocolFamily (ProtocolTypeFamily protocolTypeFamily) const
uint8_t *	getData () const
size_t	getDataLen () const
uint8_t *	getLayerPayload () const
size_t	getLayerPayloadSize () const
bool	isAllocatedToPacket () const
void	copyData (uint8_t *toArr) const
uint8_t *	getDataPtr (size_t offset=0) const override

Detailed Description

Represents a Null/Loopback layer

Constructor & Destructor Documentation

NullLoopbackLayer() [1/2]

pcpp::NullLoopbackLayer::NullLoopbackLayer ( uint8_t *  data, size_t  dataLen, Packet *  packet  )

inline

A constructor that creates the layer from an existing packet raw data

Parameters

[in]	data	A pointer to the raw data
[in]	dataLen	Size of the data in bytes
[in]	packet	A pointer to the Packet instance where layer will be stored in

NullLoopbackLayer() [2/2]

pcpp::NullLoopbackLayer::NullLoopbackLayer ( uint32_t  family )

explicit

A constructor that allocates a new Null/Loopback header

Parameters

[in]

family

The family protocol to set

~NullLoopbackLayer()

pcpp::NullLoopbackLayer::~NullLoopbackLayer ( )

overridedefault

A destructor for this layer (does nothing)

Member Function Documentation

computeCalculateFields()

void pcpp::NullLoopbackLayer::computeCalculateFields ( )

inlineoverridevirtual

Does nothing for this layer

Implements pcpp::Layer.

getFamily()

uint32_t pcpp::NullLoopbackLayer::getFamily

(

)

const

Returns

The protocol family in this layer

getHeaderLen()

size_t pcpp::NullLoopbackLayer::getHeaderLen ( ) const

inlineoverridevirtual

Returns

Size of Null/Loopback header = 4B

Implements pcpp::Layer.

getOsiModelLayer()

OsiModelLayer pcpp::NullLoopbackLayer::getOsiModelLayer ( ) const

inlineoverridevirtual

Returns

The OSI Model layer this protocol belongs to

Implements pcpp::Layer.

parseNextLayer()

void pcpp::NullLoopbackLayer::parseNextLayer ( )

overridevirtual

Identifies the next layers by family:

• for PCPP_BSD_AF_INET the next layer is IPv4Layer
• for PCPP_BSD_AF_INET6_BSD, PCPP_BSD_AF_INET6_FREEBSD, PCPP_BSD_AF_INET6_DARWIN the next layer is IPv6Layer
• for other values the next layer in PayloadLayer (unknown protocol)

Implements pcpp::Layer.

setFamily()

void pcpp::NullLoopbackLayer::setFamily

(

uint32_t

family

)

Set a protocol family

Parameters

[in]

family

The family protocol to set

toString()

std::string pcpp::NullLoopbackLayer::toString ( ) const

overridevirtual

Returns

A string representation of the layer most important data (should look like the layer description in Wireshark)

Implements pcpp::Layer.