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1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2017 Intel Corporation
6 * This file holds all x86 specific EFD functions
10 #if (RTE_EFD_VALUE_NUM_BITS == 8 || RTE_EFD_VALUE_NUM_BITS == 16 || \
11 RTE_EFD_VALUE_NUM_BITS == 24 || RTE_EFD_VALUE_NUM_BITS == 32)
12 #define EFD_LOAD_SI128(val) _mm_load_si128(val)
14 #define EFD_LOAD_SI128(val) _mm_lddqu_si128(val)
17 static inline efd_value_t
18 efd_lookup_internal_avx2(const efd_hashfunc_t
*group_hash_idx
,
19 const efd_lookuptbl_t
*group_lookup_table
,
20 const uint32_t hash_val_a
, const uint32_t hash_val_b
)
22 #ifdef RTE_MACHINE_CPUFLAG_AVX2
23 efd_value_t value
= 0;
25 __m256i vhash_val_a
= _mm256_set1_epi32(hash_val_a
);
26 __m256i vhash_val_b
= _mm256_set1_epi32(hash_val_b
);
28 for (; i
< RTE_EFD_VALUE_NUM_BITS
; i
+= 8) {
30 _mm256_cvtepu16_epi32(EFD_LOAD_SI128(
31 (__m128i
const *) &group_hash_idx
[i
]));
32 __m256i vlookup_table
= _mm256_cvtepu16_epi32(
33 EFD_LOAD_SI128((__m128i
const *)
34 &group_lookup_table
[i
]));
35 __m256i vhash
= _mm256_add_epi32(vhash_val_a
,
36 _mm256_mullo_epi32(vhash_idx
, vhash_val_b
));
37 __m256i vbucket_idx
= _mm256_srli_epi32(vhash
,
39 __m256i vresult
= _mm256_srlv_epi32(vlookup_table
,
42 value
|= (_mm256_movemask_ps(
43 (__m256
) _mm256_slli_epi32(vresult
, 31))
44 & ((1 << (RTE_EFD_VALUE_NUM_BITS
- i
)) - 1)) << i
;
49 RTE_SET_USED(group_hash_idx
);
50 RTE_SET_USED(group_lookup_table
);
51 RTE_SET_USED(hash_val_a
);
52 RTE_SET_USED(hash_val_b
);
53 /* Return dummy value, only to avoid compilation breakage */