pcpp::gre_basic_header Struct Reference

#include <GreLayer.h>

Inheritance diagram for pcpp::gre_basic_header:

Public Attributes
uint8_t	recursionControl: 3
uint8_t	strictSourceRouteBit: 1
uint8_t	sequenceNumBit: 1
uint8_t	keyBit: 1
uint8_t	routingBit: 1
uint8_t	checksumBit: 1
uint8_t	version: 3
uint8_t	flags: 4
uint8_t	ackSequenceNumBit: 1
uint16_t	protocol

Detailed Description

Represents GRE basic protocol header (common for GREv0 and GREv1)

Member Data Documentation

ackSequenceNumBit

uint8_t pcpp::gre_basic_header::ackSequenceNumBit

Set if acknowledgment number is set (GRE v1 only)

checksumBit

uint8_t pcpp::gre_basic_header::checksumBit

Set if checksum exists (GRE v0 only)

flags

uint8_t pcpp::gre_basic_header::flags

Reserved

keyBit

uint8_t pcpp::gre_basic_header::keyBit

Set if key exists

protocol

uint16_t pcpp::gre_basic_header::protocol

Protocol type of the next layer

recursionControl

uint8_t pcpp::gre_basic_header::recursionControl

Number of additional encapsulations which are permitted. 0 is the default value

routingBit

uint8_t pcpp::gre_basic_header::routingBit

Set if routing exists (GRE v0 only)

sequenceNumBit

uint8_t pcpp::gre_basic_header::sequenceNumBit

Set if sequence number exists

strictSourceRouteBit

uint8_t pcpp::gre_basic_header::strictSourceRouteBit

Strict source routing bit (GRE v0 only)

version

uint8_t pcpp::gre_basic_header::version

GRE version - can be 0 or 1