checksum.c File Reference

General CRC and checksum computation implementation. More...

#include <sys/types.h>
#include "include/checksum.h"

Include dependency graph for checksum.c:

Defines
#define	CRC_DIVIDER_BE   0x04C11DB7
	Big-endian encoding CRC divider.
#define	CRC_DIVIDER_LE   0xEDB88320
	Little-endian encoding CRC divider.
Functions
uint16_t	compact_checksum (uint32_t sum)
	Compacts the computed checksum to the 16 bit number adding the carries.
uint32_t	compute_checksum (uint32_t seed, uint8_t *data, size_t length)
	Computes sum of the 2 byte fields.
uint32_t	compute_crc32_be (uint32_t seed, uint8_t *data, size_t length)
	Computes CRC32 value in the big-endian environment.
uint32_t	compute_crc32_le (uint32_t seed, uint8_t *data, size_t length)
	Computes CRC32 value in the little-endian environment.
uint16_t	flip_checksum (uint16_t checksum)
	Returns or flips the checksum if zero.
uint16_t	ip_checksum (uint8_t *data, size_t length)
	Computes the ip header checksum.

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Detailed Description

General CRC and checksum computation implementation.