[v2] examples/ip_pipeline: use crc32 in hash functions for arm64

diff --git a/examples/ip_pipeline/pipeline/hash_func.h b/examples/ip_pipeline/pipeline/hash_func.h
index ecd4e05..42128c1 100644
--- a/examples/ip_pipeline/pipeline/hash_func.h
+++ b/examples/ip_pipeline/pipeline/hash_func.h
@@ -367,6 +367,8 @@ 
 #define hash_default_key56			hash_crc_key56
 #define hash_default_key64			hash_crc_key64
 
+#elif defined(RTE_ARCH_ARM64)
+#include "hash_func_arm64.h"
 #else
 
 #define hash_default_key8			hash_xor_key8
diff --git a/examples/ip_pipeline/pipeline/hash_func_arm64.h b/examples/ip_pipeline/pipeline/hash_func_arm64.h
new file mode 100644
index 0000000..ae6c0f4
--- /dev/null
+++ b/examples/ip_pipeline/pipeline/hash_func_arm64.h
@@ -0,0 +1,261 @@ 
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 Linaro Limited. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __HASH_FUNC_ARM64_H__
+#define __HASH_FUNC_ARM64_H__
+
+#define _CRC32CX(crc, val)	\
+	__asm__("crc32cx %w[c], %w[c], %x[v]":[c] "+r" (crc):[v] "r" (val))
+
+static inline uint64_t
+hash_crc_key8(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key;
+	uint64_t *m = mask;
+	uint32_t crc0;
+
+	crc0 = seed;
+	_CRC32CX(crc0, k[0] & m[0]);
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key16(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1;
+
+	k0 = k[0] & m[0];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc0 ^= crc1;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key24(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	_CRC32CX(crc0, k2);
+
+	crc0 ^= crc1;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key32(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1, crc2, crc3;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc2 = k2;
+	_CRC32CX(crc2, k[3] & m[3]);
+	crc3 = k2 >> 32;
+
+	_CRC32CX(crc0, crc1);
+	_CRC32CX(crc2, crc3);
+
+	crc0 ^= crc2;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key40(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1, crc2, crc3;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc2 = k2;
+	_CRC32CX(crc2, k[3] & m[3]);
+	crc3 = k2 >> 32;
+	_CRC32CX(crc3, k[4] & m[4]);
+
+	_CRC32CX(crc0, crc1);
+	_CRC32CX(crc2, crc3);
+
+	crc0 ^= crc2;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key48(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2, k5;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1, crc2, crc3;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+	k5 = k[5] & m[5];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc2 = k2;
+	_CRC32CX(crc2, k[3] & m[3]);
+	crc3 = k2 >> 32;
+	_CRC32CX(crc3, k[4] & m[4]);
+
+	_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
+	_CRC32CX(crc3, k5);
+
+	crc0 ^= crc3;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key56(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2, k5;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1, crc2, crc3, crc4, crc5;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+	k5 = k[5] & m[5];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc2 = k2;
+	_CRC32CX(crc2, k[3] & m[3]);
+	crc3 = k2 >> 32;
+	_CRC32CX(crc3, k[4] & m[4]);
+
+	crc4 = k5;
+	 _CRC32CX(crc4, k[6] & m[6]);
+	crc5 = k5 >> 32;
+
+	_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
+	_CRC32CX(crc3, ((uint64_t)crc4 << 32) ^ crc5);
+
+	crc0 ^= crc3;
+
+	return crc0;
+}
+
+static inline uint64_t
+hash_crc_key64(void *key, void *mask, __rte_unused uint32_t key_size,
+	uint64_t seed)
+{
+	uint64_t *k = key, k0, k2, k5;
+	uint64_t *m = mask;
+	uint32_t crc0, crc1, crc2, crc3, crc4, crc5;
+
+	k0 = k[0] & m[0];
+	k2 = k[2] & m[2];
+	k5 = k[5] & m[5];
+
+	crc0 = k0;
+	_CRC32CX(crc0, seed);
+	crc1 = k0 >> 32;
+	_CRC32CX(crc1, k[1] & m[1]);
+
+	crc2 = k2;
+	_CRC32CX(crc2, k[3] & m[3]);
+	crc3 = k2 >> 32;
+	_CRC32CX(crc3, k[4] & m[4]);
+
+	crc4 = k5;
+	 _CRC32CX(crc4, k[6] & m[6]);
+	crc5 = k5 >> 32;
+	_CRC32CX(crc5, k[7] & m[7]);
+
+	_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
+	_CRC32CX(crc3, ((uint64_t)crc4 << 32) ^ crc5);
+
+	crc0 ^= crc3;
+
+	return crc0;
+}
+
+#define hash_default_key8			hash_crc_key8
+#define hash_default_key16			hash_crc_key16
+#define hash_default_key24			hash_crc_key24
+#define hash_default_key32			hash_crc_key32
+#define hash_default_key40			hash_crc_key40
+#define hash_default_key48			hash_crc_key48
+#define hash_default_key56			hash_crc_key56
+#define hash_default_key64			hash_crc_key64
+
+#endif