/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #undef BIHASH_TYPE #undef BIHASH_KVP_PER_PAGE #undef BIHASH_32_64_SVM #undef BIHASH_ENABLE_STATS #define BIHASH_TYPE _40_8 #define BIHASH_KVP_PER_PAGE 4 #ifndef __included_bihash_40_8_h__ #define __included_bihash_40_8_h__ #include <vppinfra/crc32.h> #include <vppinfra/heap.h> #include <vppinfra/format.h> #include <vppinfra/pool.h> #include <vppinfra/xxhash.h> typedef struct { u64 key[5]; u64 value; } clib_bihash_kv_40_8_t; static inline int clib_bihash_is_free_40_8 (const clib_bihash_kv_40_8_t * v) { /* Free values are clib_memset to 0xff, check a bit... */ if (v->key[0] == ~0ULL && v->value == ~0ULL) return 1; return 0; } static inline u64 clib_bihash_hash_40_8 (const clib_bihash_kv_40_8_t * v) { #ifdef clib_crc32c_uses_intrinsics return clib_crc32c ((u8 *) v->key, 40); #else u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4]; return clib_xxhash (tmp); #endif } static inline u8 * format_bihash_kvp_40_8 (u8 * s, va_list * args) { clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *); s = format (s, "key %llu %llu %llu %llu %llu value %llu", v->key[0], v->key[1], v->key[2], v->key[3], v->key[4], v->value); return s; } static inline int clib_bihash_key_compare_40_8 (u64 * a, u64 * b) { #if defined (CLIB_HAVE_VEC512) u64x8 v; v = u64x8_load_unaligned (a) ^ u64x8_load_unaligned (b); return (u64x8_is_zero_mask (v) & 0x1f) == 0; #elif defined (CLIB_HAVE_VEC256) u64x4 v = { a[4] ^ b[4], 0, 0, 0 }; v |= u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b); return u64x4_is_all_zero (v); #elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE) u64x2 v = { a[4] ^ b[4], 0 }; v |= u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b); v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2); return u64x2_is_all_zero (v); #else return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3]) | (a[4] ^ b[4])) == 0; #endif } #undef __included_bihash_template_h__ #include <vppinfra/bihash_template.h> #endif /* __included_bihash_40_8_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */