Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2021 Rubicon Communications, LLC.
       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             : #undef BIHASH_TYPE
      16             : #undef BIHASH_KVP_PER_PAGE
      17             : #undef BIHASH_32_64_SVM
      18             : #undef BIHASH_ENABLE_STATS
      19             : #undef BIHASH_KVP_AT_BUCKET_LEVEL
      20             : #undef BIHASH_LAZY_INSTANTIATE
      21             : #undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
      22             : #undef BIHASH_USE_HEAP
      23             : 
      24             : #define BIHASH_TYPE                        _32_8
      25             : #define BIHASH_KVP_PER_PAGE                4
      26             : #define BIHASH_KVP_AT_BUCKET_LEVEL         0
      27             : #define BIHASH_LAZY_INSTANTIATE            1
      28             : #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 1
      29             : #define BIHASH_USE_HEAP                    1
      30             : 
      31             : #ifndef __included_bihash_32_8_h__
      32             : #define __included_bihash_32_8_h__
      33             : 
      34             : #include <vppinfra/crc32.h>
      35             : #include <vppinfra/heap.h>
      36             : #include <vppinfra/format.h>
      37             : #include <vppinfra/pool.h>
      38             : #include <vppinfra/xxhash.h>
      39             : 
      40             : typedef struct
      41             : {
      42             :   u64 key[4];
      43             :   u64 value;
      44             : } clib_bihash_kv_32_8_t;
      45             : 
      46             : static inline void
      47           0 : clib_bihash_mark_free_32_8 (clib_bihash_kv_32_8_t *v)
      48             : {
      49           0 :   v->value = 0xFEEDFACE8BADF00DULL;
      50           0 : }
      51             : 
      52             : static inline int
      53           0 : clib_bihash_is_free_32_8 (const clib_bihash_kv_32_8_t *v)
      54             : {
      55           0 :   if (v->value == 0xFEEDFACE8BADF00DULL)
      56           0 :     return 1;
      57           0 :   return 0;
      58             : }
      59             : 
      60             : static inline u64
      61          12 : clib_bihash_hash_32_8 (const clib_bihash_kv_32_8_t *v)
      62             : {
      63             : #ifdef clib_crc32c_uses_intrinsics
      64          12 :   return clib_crc32c ((u8 *) v->key, 32);
      65             : #else
      66             :   u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3];
      67             :   return clib_xxhash (tmp);
      68             : #endif
      69             : }
      70             : 
      71             : static inline u8 *
      72           0 : format_bihash_kvp_32_8 (u8 *s, va_list *args)
      73             : {
      74           0 :   clib_bihash_kv_32_8_t *v = va_arg (*args, clib_bihash_kv_32_8_t *);
      75             : 
      76           0 :   s = format (s, "key %llu %llu %llu %llu value %llu", v->key[0], v->key[1],
      77             :               v->key[2], v->key[3], v->value);
      78           0 :   return s;
      79             : }
      80             : 
      81             : static inline int
      82           0 : clib_bihash_key_compare_32_8 (u64 *a, u64 *b)
      83             : {
      84             : #if defined(CLIB_HAVE_VEC512)
      85             :   return u64x8_is_equal (u64x8_mask_load_zero (a, 0xf),
      86             :                          u64x8_mask_load_zero (b, 0xf));
      87             : #elif defined(CLIB_HAVE_VEC256)
      88             :   u64x4 v = u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b);
      89             :   return u64x4_is_all_zero (v);
      90             : #elif defined(CLIB_HAVE_VEC128) &&                                            \
      91             :   defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
      92             :   u64x2 v;
      93           0 :   v = u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b);
      94           0 :   v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2);
      95           0 :   return u64x2_is_all_zero (v);
      96             : #else
      97             :   return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3])) == 0;
      98             : #endif
      99             : }
     100             : 
     101             : #undef __included_bihash_template_h__
     102             : #include <vppinfra/bihash_template.h>
     103             : 
     104             : #endif /* __included_bihash_32_8_h__ */
     105             : 
     106             : /*
     107             :  * fd.io coding-style-patch-verification: ON
     108             :  *
     109             :  * Local Variables:
     110             :  * eval: (c-set-style "gnu")
     111             :  * End:
     112             :  */