/* * Copyright (c) 2017 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 CLIB_CUCKOO_TYPE #define CLIB_CUCKOO_TYPE _8_8 #define CLIB_CUCKOO_KVP_PER_BUCKET (4) #define CLIB_CUCKOO_LOG2_KVP_PER_BUCKET (2) #define CLIB_CUCKOO_BFS_MAX_STEPS (2000) #define CLIB_CUCKOO_BFS_MAX_PATH_LENGTH (8) #ifndef __included_cuckoo_8_8_h__ #define __included_cuckoo_8_8_h__ #include <vppinfra/heap.h> #include <vppinfra/format.h> #include <vppinfra/pool.h> #include <vppinfra/xxhash.h> #include <vppinfra/cuckoo_debug.h> #include <vppinfra/cuckoo_common.h> #undef CLIB_CUCKOO_OPTIMIZE_PREFETCH #undef CLIB_CUCKOO_OPTIMIZE_CMP_REDUCED_HASH #undef CLIB_CUCKOO_OPTIMIZE_UNROLL #undef CLIB_CUCKOO_OPTIMIZE_USE_COUNT_LIMITS_SEARCH #define CLIB_CUCKOO_OPTIMIZE_PREFETCH 1 #define CLIB_CUCKOO_OPTIMIZE_CMP_REDUCED_HASH 1 #define CLIB_CUCKOO_OPTIMIZE_UNROLL 1 #define CLIB_CUCKOO_OPTIMIZE_USE_COUNT_LIMITS_SEARCH 1 #if __SSE4_2__ && !defined (__i386__) #include <x86intrin.h> #endif /** 8 octet key, 8 octet key value pair */ typedef struct { u64 key; /**< the key */ u64 value; /**< the value */ } clib_cuckoo_kv_8_8_t; /** Decide if a clib_cuckoo_kv_8_8_t instance is free @param v- pointer to the (key,value) pair */ always_inline int clib_cuckoo_kv_is_free_8_8 (const clib_cuckoo_kv_8_8_t * v) { if (v->key == ~0ULL && v->value == ~0ULL) return 1; return 0; } always_inline void clib_cuckoo_kv_set_free_8_8 (clib_cuckoo_kv_8_8_t * v) { memset (v, 0xff, sizeof (*v)); } /** Format a clib_cuckoo_kv_8_8_t instance @param s - u8 * vector under construction @param args (vararg) - the (key,value) pair to format @return s - the u8 * vector under construction */ always_inline u8 * format_cuckoo_kvp_8_8 (u8 * s, va_list * args) { clib_cuckoo_kv_8_8_t *v = va_arg (*args, clib_cuckoo_kv_8_8_t *); if (clib_cuckoo_kv_is_free_8_8 (v)) { s = format (s, " -- empty -- ", v->key, v->value); } else { s = format (s, "key %llu value %llu", v->key, v->value); } return s; } always_inline u64 clib_cuckoo_hash_8_8 (clib_cuckoo_kv_8_8_t * v) { #if __SSE4_2__ && !defined (__i386__) return _mm_crc32_u64 (0, v->key); #else return clib_xxhash (v->key); #endif } /** Compare two clib_cuckoo_kv_8_8_t instances @param a - first key @param b - second key */ always_inline int clib_cuckoo_key_compare_8_8 (u64 a, u64 b) { return a == b; } #if 0 #undef __included_cuckoo_template_h__ #include <vppinfra/cuckoo_template.h> #endif #endif /* __included_cuckoo_8_8_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */