Line data    Source code

       1             : /*
       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:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       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.
      14             :  */
      15             : 
      16             : #undef BIHASH_TYPE
      17             : #undef BIHASH_KVP_PER_PAGE
      18             : #undef BIHASH_32_64_SVM
      19             : #undef BIHASH_ENABLE_STATS
      20             : #undef BIHASH_KVP_AT_BUCKET_LEVEL
      21             : #undef BIHASH_LAZY_INSTANTIATE
      22             : #undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
      23             : #undef BIHASH_USE_HEAP
      24             : 
      25             : #define BIHASH_TYPE _40_8
      26             : #define BIHASH_KVP_PER_PAGE 4
      27             : #define BIHASH_KVP_AT_BUCKET_LEVEL 0
      28             : #define BIHASH_LAZY_INSTANTIATE 1
      29             : #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 1
      30             : #define BIHASH_USE_HEAP 1
      31             : 
      32             : #ifndef __included_bihash_40_8_h__
      33             : #define __included_bihash_40_8_h__
      34             : 
      35             : #include <vppinfra/crc32.h>
      36             : #include <vppinfra/heap.h>
      37             : #include <vppinfra/format.h>
      38             : #include <vppinfra/pool.h>
      39             : #include <vppinfra/xxhash.h>
      40             : 
      41             : typedef struct
      42             : {
      43             :   u64 key[5];
      44             :   u64 value;
      45             : } clib_bihash_kv_40_8_t;
      46             : 
      47             : static inline void
      48       15776 : clib_bihash_mark_free_40_8 (clib_bihash_kv_40_8_t *v)
      49             : {
      50       15776 :   v->value = 0xFEEDFACE8BADF00DULL;
      51       15776 : }
      52             : 
      53             : static inline int
      54      134266 : clib_bihash_is_free_40_8 (const clib_bihash_kv_40_8_t * v)
      55             : {
      56      134266 :   if (v->value == 0xFEEDFACE8BADF00DULL)
      57       66534 :     return 1;
      58       67732 :   return 0;
      59             : }
      60             : 
      61             : static inline u64
      62       57949 : clib_bihash_hash_40_8 (const clib_bihash_kv_40_8_t * v)
      63             : {
      64             : #ifdef clib_crc32c_uses_intrinsics
      65       57949 :   return clib_crc32c ((u8 *) v->key, 40);
      66             : #else
      67             :   u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4];
      68             :   return clib_xxhash (tmp);
      69             : #endif
      70             : }
      71             : 
      72             : static inline u8 *
      73           0 : format_bihash_kvp_40_8 (u8 * s, va_list * args)
      74             : {
      75           0 :   clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *);
      76             : 
      77           0 :   s = format (s, "key %llu %llu %llu %llu %llu value %llu", v->key[0],
      78             :               v->key[1], v->key[2], v->key[3], v->key[4], v->value);
      79           0 :   return s;
      80             : }
      81             : 
      82             : static inline int
      83       41831 : clib_bihash_key_compare_40_8 (u64 * a, u64 * b)
      84             : {
      85             : #if defined (CLIB_HAVE_VEC512)
      86           0 :   return u64x8_is_equal (u64x8_mask_load_zero (a, 0x1f),
      87             :                          u64x8_mask_load_zero (b, 0x1f));
      88             : #elif defined (CLIB_HAVE_VEC256)
      89         105 :   u64x4 v = { a[4] ^ b[4], 0, 0, 0 };
      90         105 :   v |= u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b);
      91         105 :   return u64x4_is_all_zero (v);
      92             : #elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
      93       41726 :   u64x2 v = { a[4] ^ b[4], 0 };
      94       41726 :   v |= u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
      95       41726 :   v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2);
      96       41726 :   return u64x2_is_all_zero (v);
      97             : #else
      98             :   return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3])
      99             :           | (a[4] ^ b[4])) == 0;
     100             : #endif
     101             : }
     102             : 
     103             : #undef __included_bihash_template_h__
     104             : #include <vppinfra/bihash_template.h>
     105             : 
     106             : #endif /* __included_bihash_40_8_h__ */
     107             : 
     108             : /*
     109             :  * fd.io coding-style-patch-verification: ON
     110             :  *
     111             :  * Local Variables:
     112             :  * eval: (c-set-style "gnu")
     113             :  * End:
     114             :  */