2 * Copyright (c) 2016 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 _16_8
18 #define BIHASH_KVP_PER_PAGE 4
20 #ifndef __included_bihash_16_8_h__
21 #define __included_bihash_16_8_h__
23 #include <vppinfra/heap.h>
24 #include <vppinfra/format.h>
25 #include <vppinfra/pool.h>
26 #include <vppinfra/xxhash.h>
32 } clib_bihash_kv_16_8_t;
35 clib_bihash_is_free_16_8 (clib_bihash_kv_16_8_t * v)
37 /* Free values are memset to 0xff, check a bit... */
38 if (v->key[0] == ~0ULL && v->value == ~0ULL)
44 #ifndef __defined_crc_u32__
45 #define __defined_crc_u32__
47 crc_u32 (u32 data, u32 value)
49 __asm__ volatile ("crc32l %[data], %[value];":[value] "+r" (value):[data]
53 #endif /* __defined_crc_u32__ */
56 clib_bihash_hash_16_8 (clib_bihash_kv_16_8_t * v)
58 u32 *dp = (u32 *) & v->key[0];
61 value = crc_u32 (dp[0], value);
62 value = crc_u32 (dp[1], value);
63 value = crc_u32 (dp[2], value);
64 value = crc_u32 (dp[3], value);
70 clib_bihash_hash_16_8 (clib_bihash_kv_16_8_t * v)
72 u64 tmp = v->key[0] ^ v->key[1];
73 return clib_xxhash (tmp);
78 format_bihash_kvp_16_8 (u8 * s, va_list * args)
80 clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
82 s = format (s, "key %llu %llu value %llu", v->key[0], v->key[1], v->value);
87 clib_bihash_key_compare_16_8 (u64 * a, u64 * b)
89 return ((a[0] ^ b[0]) | (a[1] ^ b[1])) == 0;
92 #undef __included_bihash_template_h__
93 #include <vppinfra/bihash_template.h>
95 #endif /* __included_bihash_16_8_h__ */
98 * fd.io coding-style-patch-verification: ON
101 * eval: (c-set-style "gnu")