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Vector Packet Processing
bihash_8_8_stats.h
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1 /*
2  * Copyright (c) 2015 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 #undef BIHASH_KVP_AT_BUCKET_LEVEL
20 #undef BIHASH_LAZY_INSTANTIATE
21 #undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
22 #undef BIHASH_USE_HEAP
23 
24 #define BIHASH_TYPE _8_8_stats
25 #define BIHASH_KVP_PER_PAGE 4
26 #define BIHASH_ENABLE_STATS 1
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_8_8_stats_h__
33 #define __included_bihash_8_8__stats_h__
34 
35 #include <vppinfra/heap.h>
36 #include <vppinfra/format.h>
37 #include <vppinfra/pool.h>
38 #include <vppinfra/xxhash.h>
39 #include <vppinfra/crc32.h>
40 
41 /** 8 octet key, 8 octet key value pair */
42 typedef struct
43 {
44  u64 key; /**< the key */
45  u64 value; /**< the value */
47 
48 /** Decide if a clib_bihash_kv_8_8_t instance is free
49  @param v- pointer to the (key,value) pair
50 */
51 static inline int
53 {
54  if (v->key == ~0ULL && v->value == ~0ULL)
55  return 1;
56  return 0;
57 }
58 
59 /** Hash a clib_bihash_kv_8_8_t instance
60  @param v - pointer to the (key,value) pair, hash the key (only)
61 */
62 static inline u64
64 {
65  /* Note: to torture-test linear scan, make this fn return a constant */
66 #ifdef clib_crc32c_uses_intrinsics
67  return clib_crc32c ((u8 *) & v->key, 8);
68 #else
69  return clib_xxhash (v->key);
70 #endif
71 }
72 
73 /** Format a clib_bihash_kv_8_8_t instance
74  @param s - u8 * vector under construction
75  @param args (vararg) - the (key,value) pair to format
76  @return s - the u8 * vector under construction
77 */
78 static inline u8 *
79 format_bihash_kvp_8_8_stats (u8 * s, va_list * args)
80 {
82  va_arg (*args, clib_bihash_kv_8_8_stats_t *);
83 
84  s = format (s, "key %llu value %llu", v->key, v->value);
85  return s;
86 }
87 
88 /** Compare two clib_bihash_kv_8_8_t instances
89  @param a - first key
90  @param b - second key
91 */
92 static inline int
94 {
95  return a == b;
96 }
97 
98 #undef __included_bihash_template_h__
100 
101 #endif /* __included_bihash_8_8_stats_h__ */
102 
103 /*
104  * fd.io coding-style-patch-verification: ON
105  *
106  * Local Variables:
107  * eval: (c-set-style "gnu")
108  * End:
109  */
a
Definition: bitmap.h:544
unsigned long u64
Definition: types.h:89
Fixed length block allocator.
static u64 clib_xxhash(u64 key)
Definition: xxhash.h:58
static u64 clib_bihash_hash_8_8_stats(clib_bihash_kv_8_8_stats_t *v)
Hash a clib_bihash_kv_8_8_t instance.
8 octet key, 8 octet key value pair
unsigned char u8
Definition: types.h:56
description fragment has unexpected format
Definition: map.api:433
const cJSON *const b
Definition: cJSON.h:255
static u8 * format_bihash_kvp_8_8_stats(u8 *s, va_list *args)
Format a clib_bihash_kv_8_8_t instance.
static int clib_bihash_key_compare_8_8_stats(u64 a, u64 b)
Compare two clib_bihash_kv_8_8_t instances.
static int clib_bihash_is_free_8_8_stats(clib_bihash_kv_8_8_stats_t *v)
Decide if a clib_bihash_kv_8_8_t instance is free.