IPPKT Struct Reference

Internal IPv4 Header Representation. More...

#include <ip.h>

Public Attributes
uint8_t	bVerHdrLen
	Version and header length (same as versionNLength in IpHeaderIPv4)
uint8_t	bTos
	Type of Service / Differentiated Services field (same as diffServNEcn)
beuint16_t	wLength
	Total packet length in bytes including header.
beuint16_t	wpktId
	Packet identification for fragment reassembly.
beuint16_t	wFlags_Frag
	Flags and fragment offset combined.
uint8_t	bTTL
	Time To Live / hop count.
uint8_t	proto
	Protocol number (TCP, UDP, ICMP, etc.)
uint16_t	hCSum
	Header checksum.
IPADDR4	ipSrc
	Source IP address.
IPADDR4	ipDst
	Destination IP address.
uint8_t	DATA []
	Flexible array member - payload data follows header (actual length varies by packet)

Detailed Description

Internal IPv4 Header Representation.

This is the internal structure used throughout the NetBurner IP stack for manipulating IPv4 packets. It provides a slightly different layout than the standard IpHeaderIPv4 structure for implementation convenience.

The DATA[] flexible array member allows direct access to the packet payload that follows the IP header.

Note

This structure is packed to ensure proper alignment with network packet data.

The DATA[] field extends beyond the structure to the actual packet length.

Member Data Documentation

hCSum

uint16_t IPPKT::hCSum

Header checksum.

Warning

Do not make a big endian variable - checksumming is treated as native endian

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The documentation for this struct was generated from the following file:

• ip.h