vdpa/ifc: add block device SW live-migration

[dpdk.git] / lib / hash / rte_crc_x86.h

diff --git a/lib/hash/rte_crc_x86.h b/lib/hash/rte_crc_x86.h
index 49153ed..205bc18 100644 (file)
--- a/lib/hash/rte_crc_x86.h
+++ b/lib/hash/rte_crc_x86.h
@@ -59,4 +59,65 @@ crc32c_sse42_u64(uint64_t data, uint64_t init_val)
        return (uint32_t)init_val;
 }
 
+/*
+ * Use single crc32 instruction to perform a hash on a byte value.
+ * Fall back to software crc32 implementation in case SSE4.2 is
+ * not supported.
+ */
+static inline uint32_t
+rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
+{
+       if (likely(crc32_alg & CRC32_SSE42))
+               return crc32c_sse42_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 SSE4.2 is
+ * not supported.
+ */
+static inline uint32_t
+rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
+{
+       if (likely(crc32_alg & CRC32_SSE42))
+               return crc32c_sse42_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 SSE4.2 is
+ * not supported.
+ */
+static inline uint32_t
+rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
+{
+       if (likely(crc32_alg & CRC32_SSE42))
+               return crc32c_sse42_u32(data, init_val);
+
+       return crc32c_1word(data, init_val);
+}
+
+/*
+ * Use single crc32 instruction to perform a hash on a 8 byte value.
+ * Fall back to software crc32 implementation in case SSE4.2 is
+ * not supported.
+ */
+static inline uint32_t
+rte_hash_crc_8byte(uint64_t data, uint32_t init_val)
+{
+#ifdef RTE_ARCH_X86_64
+       if (likely(crc32_alg == CRC32_SSE42_x64))
+               return crc32c_sse42_u64(data, init_val);
+#endif
+
+       if (likely(crc32_alg & CRC32_SSE42))
+               return crc32c_sse42_u64_mimic(data, init_val);
+
+       return crc32c_2words(data, init_val);
+}
+
 #endif /* _RTE_CRC_X86_H_ */