2 * Copyright (c) 2017 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 _vec8_8
24 #define BIHASH_KVP_PER_PAGE 4
25 #define BIHASH_KVP_AT_BUCKET_LEVEL 0
26 #define BIHASH_LAZY_INSTANTIATE 1
27 #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 1
29 #ifndef __included_bihash_vec8_8_h__
30 #define __included_bihash_vec8_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_vec8_8_t;
46 clib_bihash_mark_free_vec8_8 (clib_bihash_kv_vec8_8_t *v)
48 v->value = 0xFEEDFACE8BADF00DULL;
51 /** Decide if a clib_bihash_kv_vec8_8_t instance is free
52 @param v- pointer to the (key,value) pair
55 clib_bihash_is_free_vec8_8 (clib_bihash_kv_vec8_8_t * v)
57 if (v->value == 0xFEEDFACE8BADF00DULL)
62 /** Hash a clib_bihash_kv_vec8_8_t instance
63 @param v - pointer to the (key,value) pair, hash the key (only)
66 clib_bihash_hash_vec8_8 (clib_bihash_kv_vec8_8_t * v)
68 u8 *keyp = (u8 *) (v->key);
69 /* Note: to torture-test linear scan, make this fn return a constant */
70 #ifdef clib_crc32c_uses_intrinsics
71 return clib_crc32c (keyp, vec_len (keyp));
77 for (i = 0, j = 0; i < vec_len (keyp); i++)
79 sum ^= keyp[i] << (j * 8);
85 return clib_xxhash (sum);
90 /** Format a clib_bihash_kv_vec8_8_t instance
91 @param s - u8 * vector under construction
92 @param args (vararg) - the (key,value) pair to format
93 @return s - the u8 * vector under construction
96 format_bihash_kvp_vec8_8 (u8 * s, va_list * args)
98 clib_bihash_kv_vec8_8_t *v = va_arg (*args, clib_bihash_kv_vec8_8_t *);
100 s = format (s, "key %U value %llu",
101 format_hex_bytes, v->key, vec_len ((u8 *) (v->key)), v->value);
105 /** Compare two clib_bihash_kv_vec8_8_t instances
107 @param b - second key
110 clib_bihash_key_compare_vec8_8 (u64 a_arg, u64 b_arg)
112 u8 *a = (u8 *) a_arg;
113 u8 *b = (u8 *) b_arg;
115 if (a_arg == ~0ULL || b_arg == ~0ULL)
118 if (vec_len (a) != vec_len (b))
121 return memcmp (a, b, vec_len (a)) == 0;
124 #undef __included_bihash_template_h__
125 #include <vppinfra/bihash_template.h>
127 #endif /* __included_bihash_vec8_8_h__ */
130 * fd.io coding-style-patch-verification: ON
133 * eval: (c-set-style "gnu")