rte_hash_crc.h3
Usage
Functions
void rte_hash_crc_set_alg
(uint8_t
alg)
static uint32_t
rte_hash_crc
(const
void
*data,
uint32_t
data_len,
uint32_t
init_val)
Detailed Description
RTE CRC Hash
Definition in file rte_hash_crc.h.
Function Documentation
void rte_hash_crc_set_alg (uint8_t alg)
Allow or disallow use of SSE4.2/ARMv8 intrinsics for CRC32 hash calculation.
Parameters
alg An OR of following flags:
- •
-
(CRC32_SW) Don't use SSE4.2/ARMv8 intrinsics (default non-[x86/ARMv8])
- •
-
(CRC32_SSE42) Use SSE4.2 intrinsics if available
- •
-
(CRC32_SSE42_x64) Use 64-bit SSE4.2 intrinsic if available (default x86)
- •
-
(CRC32_ARM64) Use ARMv8 CRC intrinsic if available (default ARMv8)
static uint32_t rte_hash_crc_1byte (uint8_t data, uint32_t init_val) [inline], [static]
Use single CRC32 instruction to perform a hash on a byte value.
Parameters
data Data to perform hash on.
init_val Value to initialise hash generator.
Returns
32bit calculated hash value.
static uint32_t rte_hash_crc_2byte (uint16_t data, uint32_t init_val) [inline], [static]
Use single CRC32 instruction to perform a hash on a 2 bytes value.
Parameters
data Data to perform hash on.
init_val Value to initialise hash generator.
Returns
32bit calculated hash value.
static uint32_t rte_hash_crc_4byte (uint32_t data, uint32_t init_val) [inline], [static]
Use single CRC32 instruction to perform a hash on a 4 bytes value.
Parameters
data Data to perform hash on.
init_val Value to initialise hash generator.
Returns
32bit calculated hash value.
static uint32_t rte_hash_crc_8byte (uint64_t data, uint32_t init_val) [inline], [static]
Use single CRC32 instruction to perform a hash on a 8 bytes value.
Parameters
data Data to perform hash on.
init_val Value to initialise hash generator.
Returns
32bit calculated hash value.
static uint32_t rte_hash_crc (const void * data, uint32_t data_len, uint32_t init_val) [inline], [static]
Calculate CRC32 hash on user-supplied byte array.
Parameters
data Data to perform hash on.
data_len How many bytes to use to calculate hash value.
init_val Value to initialise hash generator.
Returns
32bit calculated hash value.
Definition at line 125 of file rte_hash_crc.h.