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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
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
23 #define BIHASH_TYPE _8_8
24 #define BIHASH_KVP_PER_PAGE 7
25 #define BIHASH_KVP_AT_BUCKET_LEVEL 1
26 #define BIHASH_LAZY_INSTANTIATE 0
27 #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 2
29 #ifndef __included_bihash_8_8_h__
30 #define __included_bihash_8_8_h__
32 #include <vppinfra/heap.h>
33 #include <vppinfra/format.h>
34 #include <vppinfra/pool.h>
35 #include <vppinfra/xxhash.h>
36 #include <vppinfra/crc32.h>
38 /** 8 octet key, 8 octet key value pair */
41 u64 key; /**< the key */
42 u64 value; /**< the value */
43 } clib_bihash_kv_8_8_t;
45 /** Decide if a clib_bihash_kv_8_8_t instance is free
46 @param v- pointer to the (key,value) pair
49 clib_bihash_is_free_8_8 (clib_bihash_kv_8_8_t * v)
51 if (v->key == ~0ULL && v->value == ~0ULL)
56 /** Hash a clib_bihash_kv_8_8_t instance
57 @param v - pointer to the (key,value) pair, hash the key (only)
60 clib_bihash_hash_8_8 (clib_bihash_kv_8_8_t * v)
62 /* Note: to torture-test linear scan, make this fn return a constant */
63 #ifdef clib_crc32c_uses_intrinsics
64 return clib_crc32c ((u8 *) & v->key, 8);
66 return clib_xxhash (v->key);
70 /** Format a clib_bihash_kv_8_8_t instance
71 @param s - u8 * vector under construction
72 @param args (vararg) - the (key,value) pair to format
73 @return s - the u8 * vector under construction
76 format_bihash_kvp_8_8 (u8 * s, va_list * args)
78 clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
80 s = format (s, "key %llu value %llu", v->key, v->value);
84 /** Compare two clib_bihash_kv_8_8_t instances
89 clib_bihash_key_compare_8_8 (u64 a, u64 b)
94 #undef __included_bihash_template_h__
95 #include <vppinfra/bihash_template.h>
97 #endif /* __included_bihash_8_8_h__ */
100 * fd.io coding-style-patch-verification: ON
103 * eval: (c-set-style "gnu")