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
18 #define BIHASH_TYPE _24_8
19 #define BIHASH_KVP_PER_PAGE 4
21 #ifndef __included_bihash_24_8_h__
22 #define __included_bihash_24_8_h__
24 #include <vppinfra/crc32.h>
25 #include <vppinfra/heap.h>
26 #include <vppinfra/format.h>
27 #include <vppinfra/pool.h>
28 #include <vppinfra/xxhash.h>
34 } clib_bihash_kv_24_8_t;
37 clib_bihash_is_free_24_8 (const clib_bihash_kv_24_8_t * v)
39 /* Free values are clib_memset to 0xff, check a bit... */
40 if (v->key[0] == ~0ULL && v->value == ~0ULL)
46 clib_bihash_hash_24_8 (const clib_bihash_kv_24_8_t * v)
48 #ifdef clib_crc32c_uses_intrinsics
49 return clib_crc32c ((u8 *) v->key, 24);
51 u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2];
52 return clib_xxhash (tmp);
57 format_bihash_kvp_24_8 (u8 * s, va_list * args)
59 clib_bihash_kv_24_8_t *v = va_arg (*args, clib_bihash_kv_24_8_t *);
61 s = format (s, "key %llu %llu %llu value %llu",
62 v->key[0], v->key[1], v->key[2], v->value);
67 clib_bihash_key_compare_24_8 (u64 * a, u64 * b)
69 #if defined (CLIB_HAVE_VEC512)
70 u64x8 v = u64x8_load_unaligned (a) ^ u64x8_load_unaligned (b);
71 return (u64x8_is_zero_mask (v) & 0x7) == 0;
72 #elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
73 u64x2 v = { a[2] ^ b[2], 0 };
74 v |= u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
75 return u64x2_is_all_zero (v);
77 return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) == 0;
81 #undef __included_bihash_template_h__
82 #include <vppinfra/bihash_template.h>
84 #endif /* __included_bihash_24_8_h__ */
87 * fd.io coding-style-patch-verification: ON
90 * eval: (c-set-style "gnu")