Function rte_hash_crc

dpdk/lib/hash/rte_hash_crc.h:166–191

* Calculate CRC32 hash on user-supplied byte array. * * @param data * Data to perform hash on. * @param data_len * How many bytes to use to calculate hash value. * @param init_val * Value to initialise hash generator. * @return * 32bit calculated hash value. */

 *   32bit calculated hash value.
 */
static inline uint32_t
rte_hash_crc(const void *data, uint32_t data_len, uint32_t init_val)
{
	unsigned i;
	uintptr_t pd = (uintptr_t) data;

	for (i = 0; i < data_len / 8; i++) {
		init_val = rte_hash_crc_8byte(*(const uint64_t *)pd, init_val);
		pd += 8;
	}

	if (data_len & 0x4) {
		init_val = rte_hash_crc_4byte(*(const uint32_t *)pd, init_val);
		pd += 4;
	}

	if (data_len & 0x2) {
		init_val = rte_hash_crc_2byte(*(const uint16_t *)pd, init_val);
		pd += 2;
	}

	if (data_len & 0x1)
		init_val = rte_hash_crc_1byte(*(const uint8_t *)pd, init_val);

	return init_val;
}

#ifdef __cplusplus
}