baf3d63c15
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com> Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2015 Cavium, Inc
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*/
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/* Functions to compare multiple of 16 byte keys (up to 128 bytes) */
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static int
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rte_hash_k16_cmp_eq(const void *key1, const void *key2,
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size_t key_len __rte_unused)
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{
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uint64_t x0, x1, y0, y1;
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asm volatile(
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"ldp %x[x1], %x[x0], [%x[p1]]"
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: [x1]"=r"(x1), [x0]"=r"(x0)
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: [p1]"r"(key1)
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);
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asm volatile(
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"ldp %x[y1], %x[y0], [%x[p2]]"
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: [y1]"=r"(y1), [y0]"=r"(y0)
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: [p2]"r"(key2)
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);
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x0 ^= y0;
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x1 ^= y1;
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return !(x0 == 0 && x1 == 0);
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}
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static int
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rte_hash_k32_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k16_cmp_eq(key1, key2, key_len) ||
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rte_hash_k16_cmp_eq((const char *) key1 + 16,
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(const char *) key2 + 16, key_len);
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}
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static int
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rte_hash_k48_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k16_cmp_eq(key1, key2, key_len) ||
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rte_hash_k16_cmp_eq((const char *) key1 + 16,
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(const char *) key2 + 16, key_len) ||
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rte_hash_k16_cmp_eq((const char *) key1 + 32,
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(const char *) key2 + 32, key_len);
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}
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static int
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rte_hash_k64_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k32_cmp_eq(key1, key2, key_len) ||
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rte_hash_k32_cmp_eq((const char *) key1 + 32,
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(const char *) key2 + 32, key_len);
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}
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static int
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rte_hash_k80_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k64_cmp_eq(key1, key2, key_len) ||
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rte_hash_k16_cmp_eq((const char *) key1 + 64,
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(const char *) key2 + 64, key_len);
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}
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static int
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rte_hash_k96_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k64_cmp_eq(key1, key2, key_len) ||
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rte_hash_k32_cmp_eq((const char *) key1 + 64,
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(const char *) key2 + 64, key_len);
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}
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static int
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rte_hash_k112_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k64_cmp_eq(key1, key2, key_len) ||
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rte_hash_k32_cmp_eq((const char *) key1 + 64,
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(const char *) key2 + 64, key_len) ||
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rte_hash_k16_cmp_eq((const char *) key1 + 96,
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(const char *) key2 + 96, key_len);
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}
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static int
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rte_hash_k128_cmp_eq(const void *key1, const void *key2, size_t key_len)
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{
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return rte_hash_k64_cmp_eq(key1, key2, key_len) ||
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rte_hash_k64_cmp_eq((const char *) key1 + 64,
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(const char *) key2 + 64, key_len);
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}
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