crc32.h File Reference

CRC-32 utility functions. More...

Macros
#define	SPDK_CRC32_SIZE_BYTES   4

Functions
uint32_t	spdk_crc32_ieee_update (const void *buf, size_t len, uint32_t crc)
	Calculate a partial CRC-32 IEEE checksum. More...
uint32_t	spdk_crc32c_update (const void *buf, size_t len, uint32_t crc)
	Calculate a partial CRC-32C checksum. More...
uint32_t	spdk_crc32c_iov_update (struct iovec *iov, int iovcnt, uint32_t crc32c)
	Calculate a partial CRC-32C checksum. More...
uint32_t	spdk_crc32c_nvme (const void *buf, size_t len, uint32_t crc)
	Calculate a CRC-32C checksum, for NVMe Protection Information. More...

Detailed Description

CRC-32 utility functions.

Function Documentation

spdk_crc32_ieee_update()

uint32_t spdk_crc32_ieee_update	(	const void *	buf,
		size_t	len,
		uint32_t	crc
	)

Calculate a partial CRC-32 IEEE checksum.

Parameters

buf	Data buffer to checksum.
len	Length of buf in bytes.
crc	Previous CRC-32 value.

Returns

Updated CRC-32 value.

spdk_crc32c_iov_update()

uint32_t spdk_crc32c_iov_update	(	struct iovec *	iov,
		int	iovcnt,
		uint32_t	crc32c
	)

Calculate a partial CRC-32C checksum.

Parameters

iov	Data buffer vectors to checksum.
iovcnt	size of iov parameter.
crc32c	Previous CRC-32C value.

Returns

Updated CRC-32C value.

spdk_crc32c_nvme()

uint32_t spdk_crc32c_nvme	(	const void *	buf,
		size_t	len,
		uint32_t	crc
	)

Calculate a CRC-32C checksum, for NVMe Protection Information.

Parameters

buf	Data buffer to checksum.
len	Length of buf in bytes.
crc	Previous CRC-32C value.

Returns

Updated CRC-32C value.

spdk_crc32c_update()

uint32_t spdk_crc32c_update	(	const void *	buf,
		size_t	len,
		uint32_t	crc
	)

Calculate a partial CRC-32C checksum.

Parameters

buf	Data buffer to checksum.
len	Length of buf in bytes.
crc	Previous CRC-32C value.

Returns

Updated CRC-32C value.