#include <rte_branch_prediction.h>
#include <rte_common.h>
+static inline uint32_t
+crc32c_arm64_u8(uint8_t data, uint32_t init_val)
+{
+ asm(".arch armv8-a+crc");
+ __asm__ volatile(
+ "crc32cb %w[crc], %w[crc], %w[value]"
+ : [crc] "+r" (init_val)
+ : [value] "r" (data));
+ return init_val;
+}
+
+static inline uint32_t
+crc32c_arm64_u16(uint16_t data, uint32_t init_val)
+{
+ asm(".arch armv8-a+crc");
+ __asm__ volatile(
+ "crc32ch %w[crc], %w[crc], %w[value]"
+ : [crc] "+r" (init_val)
+ : [value] "r" (data));
+ return init_val;
+}
+
static inline uint32_t
crc32c_arm64_u32(uint32_t data, uint32_t init_val)
{
rte_hash_crc_set_alg(CRC32_ARM64);
}
+/**
+ * Use single crc32 instruction to perform a hash on a 1 byte value.
+ * Fall back to software crc32 implementation in case arm64 crc intrinsics is
+ * not supported
+ *
+ * @param data
+ * Data to perform hash on.
+ * @param init_val
+ * Value to initialise hash generator.
+ * @return
+ * 32bit calculated hash value.
+ */
+static inline uint32_t
+rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
+{
+ if (likely(crc32_alg & CRC32_ARM64))
+ return crc32c_arm64_u8(data, init_val);
+
+ return crc32c_1byte(data, init_val);
+}
+
+/**
+ * Use single crc32 instruction to perform a hash on a 2 bytes value.
+ * Fall back to software crc32 implementation in case arm64 crc intrinsics is
+ * not supported
+ *
+ * @param data
+ * Data to perform hash on.
+ * @param init_val
+ * Value to initialise hash generator.
+ * @return
+ * 32bit calculated hash value.
+ */
+static inline uint32_t
+rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
+{
+ if (likely(crc32_alg & CRC32_ARM64))
+ return crc32c_arm64_u16(data, init_val);
+
+ return crc32c_2bytes(data, init_val);
+}
+
/**
* Use single crc32 instruction to perform a hash on a 4 byte value.
* Fall back to software crc32 implementation in case arm64 crc intrinsics is