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Vector Packet Processing
bihash_40_8.h
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #undef BIHASH_TYPE
17 #undef BIHASH_KVP_PER_PAGE
18 #undef BIHASH_32_64_SVM
19 #undef BIHASH_ENABLE_STATS
20 #undef BIHASH_KVP_AT_BUCKET_LEVEL
21 #undef BIHASH_LAZY_INSTANTIATE
22 #undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
23 #undef BIHASH_USE_HEAP
24 
25 #define BIHASH_TYPE _40_8
26 #define BIHASH_KVP_PER_PAGE 4
27 #define BIHASH_KVP_AT_BUCKET_LEVEL 0
28 #define BIHASH_LAZY_INSTANTIATE 1
29 #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 1
30 #define BIHASH_USE_HEAP 1
31 
32 #ifndef __included_bihash_40_8_h__
33 #define __included_bihash_40_8_h__
34 
35 #include <vppinfra/crc32.h>
36 #include <vppinfra/heap.h>
37 #include <vppinfra/format.h>
38 #include <vppinfra/pool.h>
39 #include <vppinfra/xxhash.h>
40 
41 typedef struct
42 {
43  u64 key[5];
46 
47 static inline int
49 {
50  /* Free values are clib_memset to 0xff, check a bit... */
51  if (v->key[0] == ~0ULL && v->value == ~0ULL)
52  return 1;
53  return 0;
54 }
55 
56 static inline u64
58 {
59 #ifdef clib_crc32c_uses_intrinsics
60  return clib_crc32c ((u8 *) v->key, 40);
61 #else
62  u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4];
63  return clib_xxhash (tmp);
64 #endif
65 }
66 
67 static inline u8 *
68 format_bihash_kvp_40_8 (u8 * s, va_list * args)
69 {
70  clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *);
71 
72  s = format (s, "key %llu %llu %llu %llu %llu value %llu", v->key[0],
73  v->key[1], v->key[2], v->key[3], v->key[4], v->value);
74  return s;
75 }
76 
77 static inline int
79 {
80 #if defined (CLIB_HAVE_VEC512)
81  u64x8 v;
82  v = u64x8_load_unaligned (a) ^ u64x8_load_unaligned (b);
83  return (u64x8_is_zero_mask (v) & 0x1f) == 0;
84 #elif defined (CLIB_HAVE_VEC256)
85  u64x4 v = { a[4] ^ b[4], 0, 0, 0 };
86  v |= u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b);
87  return u64x4_is_all_zero (v);
88 #elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
89  u64x2 v = { a[4] ^ b[4], 0 };
90  v |= u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
91  v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2);
92  return u64x2_is_all_zero (v);
93 #else
94  return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3])
95  | (a[4] ^ b[4])) == 0;
96 #endif
97 }
98 
99 #undef __included_bihash_template_h__
101 
102 #endif /* __included_bihash_40_8_h__ */
103 
104 /*
105  * fd.io coding-style-patch-verification: ON
106  *
107  * Local Variables:
108  * eval: (c-set-style "gnu")
109  * End:
110  */
tmp
u32 * tmp
Definition: interface_output.c:1078
clib_bihash_kv_40_8_t::value
u64 value
Definition: bihash_40_8.h:44
bihash_template.h
clib_bihash_is_free_40_8
static int clib_bihash_is_free_40_8(const clib_bihash_kv_40_8_t *v)
Definition: bihash_40_8.h:48
u64x2
epu8_epi32 epu16_epi32 u64x2
Definition: vector_sse42.h:641
clib_bihash_kv_40_8_t
Definition: bihash_40_8.h:41
key
typedef key
Definition: ipsec_types.api:88
clib_bihash_kv_40_8_t::key
u64 key[5]
Definition: bihash_40_8.h:43
crc32.h
pool.h
Fixed length block allocator. Pools are built from clib vectors and bitmaps. Use pools when repeatedl...
format.h
clib_bihash_hash_40_8
static u64 clib_bihash_hash_40_8(const clib_bihash_kv_40_8_t *v)
Definition: bihash_40_8.h:57
clib_xxhash
static u64 clib_xxhash(u64 key)
Definition: xxhash.h:58
clib_bihash_key_compare_40_8
static int clib_bihash_key_compare_40_8(u64 *a, u64 *b)
Definition: bihash_40_8.h:78
xxhash.h
u64
unsigned long u64
Definition: types.h:89
format
description fragment has unexpected format
Definition: map.api:433
b
vlib_buffer_t ** b
Definition: nat44_ei_out2in.c:717
u8
unsigned char u8
Definition: types.h:56
a
a
Definition: bitmap.h:544
format_bihash_kvp_40_8
static u8 * format_bihash_kvp_40_8(u8 *s, va_list *args)
Definition: bihash_40_8.h:68
u64x8
__m512i u64x8
Definition: vector_avx512.h:306
heap.h
u64x4
u64x4
Definition: vector_avx2.h:142