pcpp::Sll2Layer Class Reference

#include <Sll2Layer.h>

Inheritance diagram for pcpp::Sll2Layer:

Public Member Functions
	Sll2Layer (uint8_t *data, size_t dataLen, Packet *packet)
	Sll2Layer (uint32_t interfaceIndex, uint16_t ARPHRDType, uint8_t packetType)
sll2_header *	getSll2Header () const
uint16_t	getProtocolType () const
void	setProtocolType (uint16_t protocolType)
uint32_t	getInterfaceIndex () const
void	setInterfaceIndex (uint32_t interfaceIndex)
uint16_t	getArphrdType () const
void	setArphrdType (uint16_t arphrdType)
uint8_t	getPacketType () const
void	setPacketType (uint8_t packetType)
uint8_t	getLinkLayerAddrLen () const
const uint8_t *	getLinkLayerAddr () const
bool	setLinkLayerAddr (const uint8_t *addr, size_t addrLength)
MacAddress	getLinkLayerAsMacAddress ()
bool	setMacAddressAsLinkLayer (const MacAddress &macAddr)
void	parseNextLayer () override
void	computeCalculateFields () override
size_t	getHeaderLen () const 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

Static Public Member Functions
static bool	isDataValid (const uint8_t *data, size_t dataLen)

Detailed Description

Represents an SLL2 (Linux cooked capture) protocol layer

Constructor & Destructor Documentation

Sll2Layer() [1/2]

pcpp::Sll2Layer::Sll2Layer ( 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 (will be casted to ether_header)
[in]	dataLen	Size of the data in bytes
[in]	packet	A pointer to the Packet instance where layer will be stored in

Sll2Layer() [2/2]

pcpp::Sll2Layer::Sll2Layer	(	uint32_t	interfaceIndex,
		uint16_t	ARPHRDType,
		uint8_t	packetType
	)

A constructor that creates a new SLL2 header and allocates the data

Parameters

[in]	interfaceIndex	The interface index
[in]	ARPHRDType	The ARPHRD type
[in]	packetType	The packet type

Member Function Documentation

computeCalculateFields()

void pcpp::Sll2Layer::computeCalculateFields ( )

overridevirtual

Calculate the next protocol type for known protocols: IPv4, IPv6, ARP, VLAN

Implements pcpp::Layer.

getArphrdType()

uint16_t pcpp::Sll2Layer::getArphrdType

(

)

const

Get arphrd type of this layer

Returns

arphrd type

getHeaderLen()

size_t pcpp::Sll2Layer::getHeaderLen ( ) const

inlineoverridevirtual

Returns

Size of sll2_header

Implements pcpp::Layer.

getInterfaceIndex()

uint32_t pcpp::Sll2Layer::getInterfaceIndex

(

)

const

Get interface index of this layer

Returns

interface index

getLinkLayerAddr()

const uint8_t* pcpp::Sll2Layer::getLinkLayerAddr

(

)

const

Get link layer address data pointer

Returns

link layer address data pointer

getLinkLayerAddrLen()

uint8_t pcpp::Sll2Layer::getLinkLayerAddrLen

(

)

const

Get link layer address length

Returns

link layer address length

getLinkLayerAsMacAddress()

MacAddress pcpp::Sll2Layer::getLinkLayerAsMacAddress

(

)

Get a MAC address in the link layer address field

Returns

return macAddress pointer was set successfully, null pointer if d MAC address isn't valid or if set failed

getOsiModelLayer()

OsiModelLayer pcpp::Sll2Layer::getOsiModelLayer ( ) const

inlineoverridevirtual

Returns

The OSI Model layer this protocol belongs to

Implements pcpp::Layer.

getPacketType()

uint8_t pcpp::Sll2Layer::getPacketType

(

)

const

Get packet type of this layer

Returns

packet type

getProtocolType()

uint16_t pcpp::Sll2Layer::getProtocolType

(

)

const

Get a protocol type of this layer

Returns

protocol type

getSll2Header()

sll2_header* pcpp::Sll2Layer::getSll2Header ( ) const

inline

Get a pointer to the Sll header. Notice this points directly to the data, so every change will change the actual packet data

Returns

A pointer to the sll2_header

isDataValid()

static bool pcpp::Sll2Layer::isDataValid ( const uint8_t *  data, size_t  dataLen  )

static

A static method that validates the input data

Parameters

[in]	data	The pointer to the beginning of a byte stream of an IEEE 802.3 Eth packet
[in]	dataLen	The length of the byte stream

Returns

True if the data is valid and can represent an IEEE 802.3 Eth packet

parseNextLayer()

void pcpp::Sll2Layer::parseNextLayer ( )

overridevirtual

Currently identifies the following next layers: IPv4Layer, IPv6Layer, ArpLayer, VlanLayer, PPPoESessionLayer, PPPoEDiscoveryLayer, MplsLayer. Otherwise sets PayloadLayer

Implements pcpp::Layer.

setArphrdType()

void pcpp::Sll2Layer::setArphrdType

(

uint16_t

arphrdType

)

Set arphrd type of this layer

Parameters

[in]

arphrdType

arphrd type to set

setInterfaceIndex()

void pcpp::Sll2Layer::setInterfaceIndex

(

uint32_t

interfaceIndex

)

Set interface index of this layer

Parameters

[in]

interfaceIndex

interface index to set

setLinkLayerAddr()

bool pcpp::Sll2Layer::setLinkLayerAddr	(	const uint8_t *	addr,
		size_t	addrLength
	)

A setter for the link layer address field

Parameters

[in]	addr	The address to set. Memory will be copied to packet
[in]	addrLength	Address length, must be lower or equal to 8 (which is max length for SLL2 address)

Returns

True if address was set successfully, or false of addrLength is out of bounds (0 or larger than 8)

setMacAddressAsLinkLayer()

bool pcpp::Sll2Layer::setMacAddressAsLinkLayer

(

const MacAddress &

macAddr

)

Set a MAC address in the link layer address field

Parameters

[in]

macAddr

MAC address to set

Returns

True if address was set successfully, false if MAC address isn't valid or if set failed

setPacketType()

void pcpp::Sll2Layer::setPacketType

(

uint8_t

packetType

)

Set packet type of this layer

Parameters

[in]

packetType

packet type to set

setProtocolType()

void pcpp::Sll2Layer::setProtocolType

(

uint16_t

protocolType

)

Set protocol type of this layer

Parameters

[in]

protocolType

type to set

toString()

std::string pcpp::Sll2Layer::toString ( ) const

overridevirtual

Returns

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

Implements pcpp::Layer.