1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#undef BIHASH_TYPE
#define BIHASH_TYPE _40_8
#define BIHASH_KVP_PER_PAGE 4
#ifndef __included_bihash_40_8_h__
#define __included_bihash_40_8_h__
#include <vppinfra/heap.h>
#include <vppinfra/format.h>
#include <vppinfra/pool.h>
#include <vppinfra/xxhash.h>
typedef struct
{
u64 key[5];
u64 value;
} clib_bihash_kv_40_8_t;
static inline int
clib_bihash_is_free_40_8 (const clib_bihash_kv_40_8_t * v)
{
/* Free values are memset to 0xff, check a bit... */
if (v->key[0] == ~0ULL && v->value == ~0ULL)
return 1;
return 0;
}
static inline u64
clib_bihash_hash_40_8 (const clib_bihash_kv_40_8_t * v)
{
#if __SSE4_2__
u32 value = 0;
value = _mm_crc32_u64 (value, v->key[0]);
value = _mm_crc32_u64 (value, v->key[1]);
value = _mm_crc32_u64 (value, v->key[2]);
value = _mm_crc32_u64 (value, v->key[3]);
value = _mm_crc32_u64 (value, v->key[4]);
return value;
#else
u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4];
return clib_xxhash (tmp);
#endif
}
static inline u8 *
format_bihash_kvp_40_8 (u8 * s, va_list * args)
{
clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *);
s = format (s, "key %llu %llu %llu %llu %llu value %llu",
v->key[0], v->key[1], v->key[2], v->key[3], v->key[4],
v->value);
return s;
}
static inline int
clib_bihash_key_compare_40_8 (const u64 * a, const u64 * b)
{
return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3]) |
(a[4] ^ b[4])) == 0;
}
#undef __included_bihash_template_h__
#include <vppinfra/bihash_template.h>
#endif /* __included_bihash_40_8_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
