From 27647a27c7b1e800547e3a3ea97b099b25618177 Mon Sep 17 00:00:00 2001 From: Nathan Skrzypczak Date: Thu, 25 Feb 2021 11:01:41 +0100 Subject: cnat: fixes & prepare maglev Notable changes: - ip[46]-cnat-snat is renamed to cnat-snat-ip[46] - indent fixes - common trace primitives - bihash is now 40_56 with alias Type: refactor Change-Id: I0a82cfe3b40efd96473e51061d7135ffe412ddfc Signed-off-by: Nathan Skrzypczak --- src/plugins/cnat/cnat_bihash.h | 122 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 src/plugins/cnat/cnat_bihash.h (limited to 'src/plugins/cnat/cnat_bihash.h') diff --git a/src/plugins/cnat/cnat_bihash.h b/src/plugins/cnat/cnat_bihash.h new file mode 100644 index 00000000000..a148ad57682 --- /dev/null +++ b/src/plugins/cnat/cnat_bihash.h @@ -0,0 +1,122 @@ +/* + * 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 +#undef BIHASH_KVP_AT_BUCKET_LEVEL +#undef BIHASH_LAZY_INSTANTIATE +#undef BIHASH_BUCKET_PREFETCH_CACHE_LINES + +#define BIHASH_TYPE _40_56 +#define BIHASH_KVP_PER_PAGE 2 +#define BIHASH_KVP_AT_BUCKET_LEVEL 1 +#define BIHASH_LAZY_INSTANTIATE 1 +#define BIHASH_BUCKET_PREFETCH_CACHE_LINES 2 + +#ifndef __included_bihash_40_56_h__ +#define __included_bihash_40_56_h__ + +#include +#include +#include +#include +#include + +typedef struct +{ + u64 key[5]; + u64 value[7]; +} clib_bihash_kv_40_56_t; + +static inline int +clib_bihash_is_free_40_56 (const clib_bihash_kv_40_56_t *v) +{ + /* Free values are clib_memset to 0xff, check a bit... */ + if (v->key[0] == ~0ULL && v->value[0] == ~0ULL) + return 1; + return 0; +} + +static inline u64 +clib_bihash_hash_40_56 (const clib_bihash_kv_40_56_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_56 (u8 *s, va_list *args) +{ + clib_bihash_kv_40_56_t *v = va_arg (*args, clib_bihash_kv_40_56_t *); + + s = format (s, + "key %llu %llu %llu %llu %llu" + "value %llu %llu %llu %llu %llu %llu %llu", + v->key[0], v->key[1], v->key[2], v->key[3], v->key[4], + v->value[0], v->value[1], v->value[2], v->value[3], v->value[4], + v->value[5], v->value[6]); + return s; +} + +static inline int +clib_bihash_key_compare_40_56 (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 + +typedef clib_bihash_kv_40_56_t cnat_bihash_kv_t; +typedef clib_bihash_40_56_t cnat_bihash_t; + +#define cnat_bihash_search_i2_hash clib_bihash_search_inline_2_with_hash_40_56 +#define cnat_bihash_search_i2 clib_bihash_search_inline_2_40_56 +#define cnat_bihash_add_del clib_bihash_add_del_40_56 +#define cnat_bihash_hash clib_bihash_hash_40_56 +#define cnat_bihash_prefetch_bucket clib_bihash_prefetch_bucket_40_56 +#define cnat_bihash_prefetch_data clib_bihash_prefetch_data_40_56 + +#endif /* __included_bihash_40_56_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg