--- /dev/null
+/*-
+ * 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
Code Review / deb_dpdk.git / blobdiff