diff options
Diffstat (limited to 'src/dpdk22/lib/librte_table/rte_lru.h')
| -rw-r--r-- | src/dpdk22/lib/librte_table/rte_lru.h | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/dpdk22/lib/librte_table/rte_lru.h b/src/dpdk22/lib/librte_table/rte_lru.h deleted file mode 100644 index e87e062d..00000000 --- a/src/dpdk22/lib/librte_table/rte_lru.h +++ /dev/null @@ -1,213 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __INCLUDE_RTE_LRU_H__ -#define __INCLUDE_RTE_LRU_H__ - -#ifdef __cplusplus -extern "C" { -#endif - -#include <stdint.h> - -#ifdef __INTEL_COMPILER -#define GCC_VERSION (0) -#else -#define GCC_VERSION (__GNUC__ * 10000+__GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__) -#endif - -#ifndef RTE_TABLE_HASH_LRU_STRATEGY -#ifdef __SSE4_2__ -#define RTE_TABLE_HASH_LRU_STRATEGY 2 -#else /* if no SSE, use simple scalar version */ -#define RTE_TABLE_HASH_LRU_STRATEGY 1 -#endif -#endif - -#ifndef RTE_ARCH_X86_64 -#undef RTE_TABLE_HASH_LRU_STRATEGY -#define RTE_TABLE_HASH_LRU_STRATEGY 1 -#endif - -#if (RTE_TABLE_HASH_LRU_STRATEGY < 0) || (RTE_TABLE_HASH_LRU_STRATEGY > 3) -#error Invalid value for RTE_TABLE_HASH_LRU_STRATEGY -#endif - -#if RTE_TABLE_HASH_LRU_STRATEGY == 0 - -#define lru_init(bucket) \ -do \ - bucket = bucket; \ -while (0) - -#define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU) - -#define lru_update(bucket, mru_val) \ -do { \ - bucket = bucket; \ - mru_val = mru_val; \ -} while (0) - -#elif RTE_TABLE_HASH_LRU_STRATEGY == 1 - -#define lru_init(bucket) \ -do \ - bucket->lru_list = 0x0000000100020003LLU; \ -while (0) - -#define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU) - -#define lru_update(bucket, mru_val) \ -do { \ - uint64_t x, pos, x0, x1, x2, mask; \ - \ - x = bucket->lru_list; \ - \ - pos = 4; \ - if ((x >> 48) == ((uint64_t) mru_val)) \ - pos = 3; \ - \ - if (((x >> 32) & 0xFFFFLLU) == ((uint64_t) mru_val)) \ - pos = 2; \ - \ - if (((x >> 16) & 0xFFFFLLU) == ((uint64_t) mru_val)) \ - pos = 1; \ - \ - if ((x & 0xFFFFLLU) == ((uint64_t) mru_val)) \ - pos = 0; \ - \ - \ - pos <<= 4; \ - mask = (~0LLU) << pos; \ - x0 = x & (~mask); \ - x1 = (x >> 16) & mask; \ - x2 = (x << (48 - pos)) & (0xFFFFLLU << 48); \ - x = x0 | x1 | x2; \ - \ - if (pos != 64) \ - bucket->lru_list = x; \ -} while (0) - -#elif RTE_TABLE_HASH_LRU_STRATEGY == 2 - -#if GCC_VERSION > 40306 -#include <x86intrin.h> -#else -#include <emmintrin.h> -#include <smmintrin.h> -#include <xmmintrin.h> -#endif - -#define lru_init(bucket) \ -do \ - bucket->lru_list = 0x0000000100020003LLU; \ -while (0) - -#define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU) - -#define lru_update(bucket, mru_val) \ -do { \ - /* set up the masks for all possible shuffles, depends on pos */\ - static uint64_t masks[10] = { \ - /* Shuffle order; Make Zero (see _mm_shuffle_epi8 manual) */\ - 0x0100070605040302, 0x8080808080808080, \ - 0x0302070605040100, 0x8080808080808080, \ - 0x0504070603020100, 0x8080808080808080, \ - 0x0706050403020100, 0x8080808080808080, \ - 0x0706050403020100, 0x8080808080808080}; \ - /* load up one register with repeats of mru-val */ \ - uint64_t mru2 = mru_val; \ - uint64_t mru3 = mru2 | (mru2 << 16); \ - uint64_t lru = bucket->lru_list; \ - /* XOR to cause the word we're looking for to go to zero */ \ - uint64_t mru = lru ^ ((mru3 << 32) | mru3); \ - __m128i c = _mm_cvtsi64_si128(mru); \ - __m128i b = _mm_cvtsi64_si128(lru); \ - /* Find the minimum value (first zero word, if it's in there) */\ - __m128i d = _mm_minpos_epu16(c); \ - /* Second word is the index to found word (first word is the value) */\ - unsigned pos = _mm_extract_epi16(d, 1); \ - /* move the recently used location to top of list */ \ - __m128i k = _mm_shuffle_epi8(b, *((__m128i *) &masks[2 * pos]));\ - /* Finally, update the original list with the reordered data */ \ - bucket->lru_list = _mm_extract_epi64(k, 0); \ - /* Phwew! */ \ -} while (0) - -#elif RTE_TABLE_HASH_LRU_STRATEGY == 3 - -#if GCC_VERSION > 40306 -#include <x86intrin.h> -#else -#include <emmintrin.h> -#include <smmintrin.h> -#include <xmmintrin.h> -#endif - -#define lru_init(bucket) \ -do \ - bucket->lru_list = ~0LLU; \ -while (0) - - -static inline int -f_lru_pos(uint64_t lru_list) -{ - __m128i lst = _mm_set_epi64x((uint64_t)-1, lru_list); - __m128i min = _mm_minpos_epu16(lst); - return _mm_extract_epi16(min, 1); -} -#define lru_pos(bucket) f_lru_pos(bucket->lru_list) - -#define lru_update(bucket, mru_val) \ -do { \ - const uint64_t orvals[] = {0xFFFFLLU, 0xFFFFLLU << 16, \ - 0xFFFFLLU << 32, 0xFFFFLLU << 48, 0LLU}; \ - const uint64_t decs[] = {0x1000100010001LLU, 0}; \ - __m128i lru = _mm_cvtsi64_si128(bucket->lru_list); \ - __m128i vdec = _mm_cvtsi64_si128(decs[mru_val>>2]); \ - lru = _mm_subs_epu16(lru, vdec); \ - bucket->lru_list = _mm_extract_epi64(lru, 0) | orvals[mru_val]; \ -} while (0) - -#else - -#error "Incorrect value for RTE_TABLE_HASH_LRU_STRATEGY" - -#endif - -#ifdef __cplusplus -} -#endif - -#endif |