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.
18 #define BIHASH_TYPE _48_8
19 #define BIHASH_KVP_PER_PAGE 4
21 #ifndef __included_bihash_48_8_h__
22 #define __included_bihash_48_8_h__
24 #include <vppinfra/heap.h>
25 #include <vppinfra/format.h>
26 #include <vppinfra/pool.h>
27 #include <vppinfra/xxhash.h>
33 } clib_bihash_kv_48_8_t;
36 clib_bihash_is_free_48_8 (const clib_bihash_kv_48_8_t * v)
38 /* Free values are memset to 0xff, check a bit... */
39 if (v->key[0] == ~0ULL && v->value == ~0ULL)
45 #ifndef __defined_crc_u32__
46 #define __defined_crc_u32__
48 crc_u32 (u32 data, u32 value)
50 __asm__ volatile ("crc32l %[data], %[value];":[value] "+r" (value):[data]
54 #endif /* __defined_crc_u32__ */
57 clib_bihash_hash_48_8 (const clib_bihash_kv_48_8_t * v)
59 const u32 *dp = (const u32 *) &v->key[0];
62 value = crc_u32 (dp[0], value);
63 value = crc_u32 (dp[1], value);
64 value = crc_u32 (dp[2], value);
65 value = crc_u32 (dp[3], value);
66 value = crc_u32 (dp[4], value);
67 value = crc_u32 (dp[5], value);
68 value = crc_u32 (dp[6], value);
69 value = crc_u32 (dp[7], value);
70 value = crc_u32 (dp[8], value);
71 value = crc_u32 (dp[9], value);
72 value = crc_u32 (dp[10], value);
73 value = crc_u32 (dp[11], value);
79 clib_bihash_hash_48_8 (const clib_bihash_kv_48_8_t * v)
81 u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4]
83 return clib_xxhash (tmp);
88 format_bihash_kvp_48_8 (u8 * s, va_list * args)
90 clib_bihash_kv_48_8_t *v = va_arg (*args, clib_bihash_kv_48_8_t *);
92 s = format (s, "key %llu %llu %llu %llu %llu %llu value %llu", v->key[0],
93 v->key[1], v->key[2], v->key[3], v->key[4], v->key[5],
99 clib_bihash_key_compare_48_8 (const u64 * a, const u64 * b)
101 return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3])
102 | (a[4] ^ b[4]) | (a[5] ^ b[5])) == 0;
105 #undef __included_bihash_template_h__
106 #include <vppinfra/bihash_template.h>
108 #endif /* __included_bihash_48_8_h__ */
111 * fd.io coding-style-patch-verification: ON
114 * eval: (c-set-style "gnu")