@@ -19,6 +19,7 @@ indirect_headers += files(
sources = files(
'rte_cuckoo_hash.c',
+ 'rte_hash_crc.c',
'rte_fbk_hash.c',
'rte_thash.c',
'rte_thash_gfni.c'
@@ -53,7 +53,7 @@ crc32c_arm64_u64(uint64_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_ARM64))
+ if (likely(rte_hash_crc32_alg & CRC32_ARM64))
return crc32c_arm64_u8(data, init_val);
return crc32c_1byte(data, init_val);
@@ -67,7 +67,7 @@ rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_ARM64))
+ if (likely(rte_hash_crc32_alg & CRC32_ARM64))
return crc32c_arm64_u16(data, init_val);
return crc32c_2bytes(data, init_val);
@@ -81,7 +81,7 @@ rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_ARM64))
+ if (likely(rte_hash_crc32_alg & CRC32_ARM64))
return crc32c_arm64_u32(data, init_val);
return crc32c_1word(data, init_val);
@@ -95,7 +95,7 @@ rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_8byte(uint64_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_ARM64))
+ if (likely(rte_hash_crc32_alg & CRC32_ARM64))
return crc32c_arm64_u64(data, init_val);
return crc32c_2words(data, init_val);
@@ -67,7 +67,7 @@ crc32c_sse42_u64(uint64_t data, uint64_t init_val)
static inline uint32_t
rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_SSE42))
+ if (likely(rte_hash_crc32_alg & CRC32_SSE42))
return crc32c_sse42_u8(data, init_val);
return crc32c_1byte(data, init_val);
@@ -81,7 +81,7 @@ rte_hash_crc_1byte(uint8_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_SSE42))
+ if (likely(rte_hash_crc32_alg & CRC32_SSE42))
return crc32c_sse42_u16(data, init_val);
return crc32c_2bytes(data, init_val);
@@ -95,7 +95,7 @@ rte_hash_crc_2byte(uint16_t data, uint32_t init_val)
static inline uint32_t
rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
{
- if (likely(crc32_alg & CRC32_SSE42))
+ if (likely(rte_hash_crc32_alg & CRC32_SSE42))
return crc32c_sse42_u32(data, init_val);
return crc32c_1word(data, init_val);
@@ -110,11 +110,11 @@ 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))
+ if (likely(rte_hash_crc32_alg == CRC32_SSE42_x64))
return crc32c_sse42_u64(data, init_val);
#endif
- if (likely(crc32_alg & CRC32_SSE42))
+ if (likely(rte_hash_crc32_alg & CRC32_SSE42))
return crc32c_sse42_u64_mimic(data, init_val);
return crc32c_2words(data, init_val);
new file mode 100644
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <rte_cpuflags.h>
+#include <rte_log.h>
+
+#include "rte_hash_crc.h"
+
+RTE_LOG_REGISTER_SUFFIX(hash_crc_logtype, crc, INFO);
+#define RTE_LOGTYPE_HASH_CRC hash_crc_logtype
+
+uint8_t rte_hash_crc32_alg = CRC32_SW;
+
+/**
+ * Allow or disallow use of SSE4.2/ARMv8 intrinsics for CRC32 hash
+ * calculation.
+ *
+ * @param 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)
+ *
+ */
+void
+rte_hash_crc_set_alg(uint8_t alg)
+{
+ rte_hash_crc32_alg = CRC32_SW;
+
+ if (alg == CRC32_SW)
+ return;
+
+#if defined RTE_ARCH_X86
+ if (!(alg & CRC32_SSE42_x64))
+ RTE_LOG(WARNING, HASH_CRC,
+ "Unsupported CRC32 algorithm requested using CRC32_x64/CRC32_SSE42\n");
+ if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_EM64T) || alg == CRC32_SSE42)
+ rte_hash_crc32_alg = CRC32_SSE42;
+ else
+ rte_hash_crc32_alg = CRC32_SSE42_x64;
+#endif
+
+#if defined RTE_ARCH_ARM64
+ if (!(alg & CRC32_ARM64))
+ RTE_LOG(WARNING, HASH_CRC,
+ "Unsupported CRC32 algorithm requested using CRC32_ARM64\n");
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_CRC32))
+ rte_hash_crc32_alg = CRC32_ARM64;
+#endif
+
+ if (rte_hash_crc32_alg == CRC32_SW)
+ RTE_LOG(WARNING, HASH_CRC,
+ "Unsupported CRC32 algorithm requested using CRC32_SW\n");
+}
+
+/* Setting the best available algorithm */
+RTE_INIT(rte_hash_crc_init_alg)
+{
+#if defined(RTE_ARCH_X86)
+ rte_hash_crc_set_alg(CRC32_SSE42_x64);
+#elif defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_CRC32)
+ rte_hash_crc_set_alg(CRC32_ARM64);
+#else
+ rte_hash_crc_set_alg(CRC32_SW);
+#endif
+}
@@ -20,8 +20,6 @@ extern "C" {
#include <rte_branch_prediction.h>
#include <rte_common.h>
#include <rte_config.h>
-#include <rte_cpuflags.h>
-#include <rte_log.h>
#include "rte_crc_sw.h"
@@ -31,7 +29,7 @@ extern "C" {
#define CRC32_SSE42_x64 (CRC32_x64|CRC32_SSE42)
#define CRC32_ARM64 (1U << 3)
-static uint8_t crc32_alg = CRC32_SW;
+extern uint8_t rte_hash_crc32_alg;
#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_CRC32)
#include "rte_crc_arm64.h"
@@ -53,48 +51,8 @@ static uint8_t crc32_alg = CRC32_SW;
* - (CRC32_ARM64) Use ARMv8 CRC intrinsic if available (default ARMv8)
*
*/
-static inline void
-rte_hash_crc_set_alg(uint8_t alg)
-{
- crc32_alg = CRC32_SW;
-
- if (alg == CRC32_SW)
- return;
-
-#if defined RTE_ARCH_X86
- if (!(alg & CRC32_SSE42_x64))
- RTE_LOG(WARNING, HASH,
- "Unsupported CRC32 algorithm requested using CRC32_x64/CRC32_SSE42\n");
- if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_EM64T) || alg == CRC32_SSE42)
- crc32_alg = CRC32_SSE42;
- else
- crc32_alg = CRC32_SSE42_x64;
-#endif
-
-#if defined RTE_ARCH_ARM64
- if (!(alg & CRC32_ARM64))
- RTE_LOG(WARNING, HASH,
- "Unsupported CRC32 algorithm requested using CRC32_ARM64\n");
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_CRC32))
- crc32_alg = CRC32_ARM64;
-#endif
-
- if (crc32_alg == CRC32_SW)
- RTE_LOG(WARNING, HASH,
- "Unsupported CRC32 algorithm requested using CRC32_SW\n");
-}
-
-/* Setting the best available algorithm */
-RTE_INIT(rte_hash_crc_init_alg)
-{
-#if defined(RTE_ARCH_X86)
- rte_hash_crc_set_alg(CRC32_SSE42_x64);
-#elif defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_CRC32)
- rte_hash_crc_set_alg(CRC32_ARM64);
-#else
- rte_hash_crc_set_alg(CRC32_SW);
-#endif
-}
+void
+rte_hash_crc_set_alg(uint8_t alg);
#ifdef __DOXYGEN__
@@ -9,6 +9,7 @@ DPDK_23 {
rte_hash_add_key_with_hash;
rte_hash_add_key_with_hash_data;
rte_hash_count;
+ rte_hash_crc_set_alg;
rte_hash_create;
rte_hash_del_key;
rte_hash_del_key_with_hash;
@@ -56,3 +57,9 @@ EXPERIMENTAL {
rte_thash_gfni;
rte_thash_gfni_bulk;
};
+
+INTERNAL {
+ global:
+
+ rte_hash_crc32_alg;
+};