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.
17 #define BIHASH_TYPE _8_8
18 #define BIHASH_KVP_PER_PAGE 4
20 #ifndef __included_bihash_8_8_h__
21 #define __included_bihash_8_8_h__
23 #include <vppinfra/heap.h>
24 #include <vppinfra/format.h>
25 #include <vppinfra/pool.h>
26 #include <vppinfra/xxhash.h>
29 #include <x86intrin.h>
32 /** 8 octet key, 8 octet key value pair */
35 u64 key; /**< the key */
36 u64 value; /**< the value */
37 } clib_bihash_kv_8_8_t;
39 /** Decide if a clib_bihash_kv_8_8_t instance is free
40 @param v- pointer to the (key,value) pair
43 clib_bihash_is_free_8_8 (clib_bihash_kv_8_8_t * v)
45 if (v->key == ~0ULL && v->value == ~0ULL)
50 /** Hash a clib_bihash_kv_8_8_t instance
51 @param v - pointer to the (key,value) pair, hash the key (only)
54 clib_bihash_hash_8_8 (clib_bihash_kv_8_8_t * v)
56 /* Note: to torture-test linear scan, make this fn return a constant */
58 return _mm_crc32_u64 (0, v->key);
60 return clib_xxhash (v->key);
64 /** Format a clib_bihash_kv_8_8_t instance
65 @param s - u8 * vector under construction
66 @param args (vararg) - the (key,value) pair to format
67 @return s - the u8 * vector under construction
70 format_bihash_kvp_8_8 (u8 * s, va_list * args)
72 clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
74 s = format (s, "key %llu value %llu", v->key, v->value);
78 /** Compare two clib_bihash_kv_8_8_t instances
83 clib_bihash_key_compare_8_8 (u64 a, u64 b)
88 #undef __included_bihash_template_h__
89 #include <vppinfra/bihash_template.h>
91 #endif /* __included_bihash_8_8_h__ */
94 * fd.io coding-style-patch-verification: ON
97 * eval: (c-set-style "gnu")