rte_hash_crc.h(3) DPDK rte_hash_crc.h(3) NAME rte_hash_crc.h SYNOPSIS #include <stdint.h> #include <rte_branch_prediction.h> #include <rte_common.h> #include <rte_config.h> #include 'rte_crc_sw.h' #include 'rte_crc_generic.h' Functions void rte_hash_crc_set_alg (uint8_t alg) static uint32_t rte_hash_crc_1byte (uint8_t data, uint32_t init_val) static uint32_t rte_hash_crc_2byte (uint16_t data, uint32_t init_val) static uint32_t rte_hash_crc_4byte (uint32_t data, uint32_t init_val) static uint32_t rte_hash_crc_8byte (uint64_t data, uint32_t init_val) 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 calcula- tion. 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) [in- line], [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) [in- line], [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) [in- line], [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) [in- line], [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. Author Generated automatically by Doxygen for DPDK from the source code. Version 25.11.0 Thu Aug 27 2026 rte_hash_crc.h(3)
NAME | SYNOPSIS | Detailed Description | Function Documentation | Author
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