FD.io VPP  v19.08-27-gf4dcae4
Vector Packet Processing
bihash_16_8_32.h
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1 /*
2  * Copyright (c) 2018 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 #undef BIHASH_TYPE
16 #undef BIHASH_KVP_PER_PAGE
17 #undef BIHASH_32_64_SVM
18 #undef BIHASH_ENABLE_STATS
19 
20 
21 #define BIHASH_TYPE _16_8_32
22 #define BIHASH_KVP_PER_PAGE 4
23 
24 #define BIHASH_32_64_SVM 1
25 
26 #ifndef __included_bihash_16_18_32_h__
27 #define __included_bihash_16_18_32_h__
28 
29 #include <vppinfra/heap.h>
30 #include <vppinfra/format.h>
31 #include <vppinfra/pool.h>
32 #include <vppinfra/xxhash.h>
33 #include <vppinfra/crc32.h>
34 
35 typedef struct
36 {
37  u64 key[2];
40 
41 static inline int
43 {
44  /* Free values are clib_memset to 0xff, check a bit... */
45  if (v->key[0] == ~0ULL && v->value == ~0ULL)
46  return 1;
47  return 0;
48 }
49 
50 static inline u64
52 {
53 #ifdef clib_crc32c_uses_intrinsics
54  return clib_crc32c ((u8 *) v->key, 16);
55 #else
56  u64 tmp = v->key[0] ^ v->key[1];
57  return clib_xxhash (tmp);
58 #endif
59 }
60 
61 static inline u8 *
62 format_bihash_kvp_16_8_32 (u8 * s, va_list * args)
63 {
65 
66  s = format (s, "key %llu %llu value %llu", v->key[0], v->key[1], v->value);
67  return s;
68 }
69 
70 static inline int
72 {
73 #if defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
74  u64x2 v;
75  v = u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
76  return u64x2_is_all_zero (v);
77 #else
78  return ((a[0] ^ b[0]) | (a[1] ^ b[1])) == 0;
79 #endif
80 }
81 
82 #undef __included_bihash_template_h__
84 
85 #endif /* __included_bihash_16_8_32_h__ */
86 
87 /*
88  * fd.io coding-style-patch-verification: ON
89  *
90  * Local Variables:
91  * eval: (c-set-style "gnu")
92  * End:
93  */
static int clib_bihash_is_free_16_8_32(clib_bihash_kv_16_8_32_t *v)
a
Definition: bitmap.h:538
unsigned long u64
Definition: types.h:89
Fixed length block allocator.
static u64 clib_xxhash(u64 key)
Definition: xxhash.h:58
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
unsigned char u8
Definition: types.h:56
epu8_epi32 epu16_epi32 u64x2
Definition: vector_sse42.h:674
static int clib_bihash_key_compare_16_8_32(u64 *a, u64 *b)
static u64 clib_bihash_hash_16_8_32(clib_bihash_kv_16_8_32_t *v)
typedef key
Definition: ipsec.api:245
static u8 * format_bihash_kvp_16_8_32(u8 *s, va_list *args)