Neale Ranns | 302b25a | 2020-10-19 13:23:33 +0000 | [diff] [blame] | 1 | /* |
| 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: |
| 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 _8_16 |
| 25 | #define BIHASH_KVP_PER_PAGE 7 |
| 26 | #define BIHASH_KVP_AT_BUCKET_LEVEL 1 |
| 27 | #define BIHASH_LAZY_INSTANTIATE 0 |
| 28 | #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 2 |
| 29 | #define BIHASH_USE_HEAP 1 |
| 30 | |
| 31 | #ifndef __included_bihash_8_16_h__ |
| 32 | #define __included_bihash_8_16_h__ |
| 33 | |
| 34 | #include <vppinfra/heap.h> |
| 35 | #include <vppinfra/format.h> |
| 36 | #include <vppinfra/pool.h> |
| 37 | #include <vppinfra/xxhash.h> |
| 38 | #include <vppinfra/crc32.h> |
| 39 | |
| 40 | /** 8 octet key, 8 octet key value pair */ |
| 41 | typedef struct |
| 42 | { |
| 43 | u64 key; /**< the key */ |
| 44 | u64 value[2]; /**< the value */ |
| 45 | } clib_bihash_kv_8_16_t; |
| 46 | |
| 47 | /** Decide if a clib_bihash_kv_8_16_t instance is free |
| 48 | @param v- pointer to the (key,value) pair |
| 49 | */ |
| 50 | static inline int |
| 51 | clib_bihash_is_free_8_16 (clib_bihash_kv_8_16_t * v) |
| 52 | { |
| 53 | if (v->key == ~0ULL && v->value[0] == ~0ULL && v->value[1] == ~0ULL) |
| 54 | return 1; |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | /** Hash a clib_bihash_kv_8_16_t instance |
| 59 | @param v - pointer to the (key,value) pair, hash the key (only) |
| 60 | */ |
| 61 | static inline u64 |
| 62 | clib_bihash_hash_8_16 (clib_bihash_kv_8_16_t * v) |
| 63 | { |
| 64 | /* Note: to torture-test linear scan, make this fn return a constant */ |
| 65 | #ifdef clib_crc32c_uses_intrinsics |
| 66 | return clib_crc32c ((u8 *) & v->key, 8); |
| 67 | #else |
| 68 | return clib_xxhash (v->key); |
| 69 | #endif |
| 70 | } |
| 71 | |
| 72 | /** Format a clib_bihash_kv_8_16_t instance |
| 73 | @param s - u8 * vector under construction |
| 74 | @param args (vararg) - the (key,value) pair to format |
| 75 | @return s - the u8 * vector under construction |
| 76 | */ |
| 77 | static inline u8 * |
| 78 | format_bihash_kvp_8_16 (u8 * s, va_list * args) |
| 79 | { |
| 80 | clib_bihash_kv_8_16_t *v = va_arg (*args, clib_bihash_kv_8_16_t *); |
| 81 | |
| 82 | s = |
BenoƮt Ganne | 0d5f1a6 | 2022-06-10 09:40:47 +0200 | [diff] [blame^] | 83 | format (s, "key %llx value [%llx,%llx]", v->key, v->value[0], v->value[1]); |
Neale Ranns | 302b25a | 2020-10-19 13:23:33 +0000 | [diff] [blame] | 84 | return s; |
| 85 | } |
| 86 | |
| 87 | /** Compare two clib_bihash_kv_8_16_t instances |
| 88 | @param a - first key |
| 89 | @param b - second key |
| 90 | */ |
| 91 | static inline int |
| 92 | clib_bihash_key_compare_8_16 (u64 a, u64 b) |
| 93 | { |
| 94 | return a == b; |
| 95 | } |
| 96 | |
| 97 | #undef __included_bihash_template_h__ |
| 98 | #include <vppinfra/bihash_template.h> |
| 99 | |
| 100 | #endif /* __included_bihash_8_16_h__ */ |
| 101 | |
| 102 | /* |
| 103 | * fd.io coding-style-patch-verification: ON |
| 104 | * |
| 105 | * Local Variables: |
| 106 | * eval: (c-set-style "gnu") |
| 107 | * End: |
| 108 | */ |