5 #ifndef __INCLUDE_RTE_LRU_X86_H__ 6 #define __INCLUDE_RTE_LRU_X86_H__ 10 #include <rte_config.h> 13 #ifndef RTE_TABLE_HASH_LRU_STRATEGY 14 #define RTE_TABLE_HASH_LRU_STRATEGY 2 17 #if RTE_TABLE_HASH_LRU_STRATEGY == 2 20 #include <x86intrin.h> 22 #include <emmintrin.h> 23 #include <smmintrin.h> 24 #include <xmmintrin.h> 27 #define lru_init(bucket) \ 28 { bucket->lru_list = 0x0000000100020003LLU; } 30 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU) 32 #define lru_update(bucket, mru_val) \ 35 static uint64_t masks[10] = { \ 37 0x0100070605040302, 0x8080808080808080, \ 38 0x0302070605040100, 0x8080808080808080, \ 39 0x0504070603020100, 0x8080808080808080, \ 40 0x0706050403020100, 0x8080808080808080, \ 41 0x0706050403020100, 0x8080808080808080}; \ 43 uint64_t mru2 = mru_val; \ 44 uint64_t mru3 = mru2 | (mru2 << 16); \ 45 uint64_t lru = bucket->lru_list; \ 47 uint64_t mru = lru ^ ((mru3 << 32) | mru3); \ 48 __m128i c = _mm_cvtsi64_si128(mru); \ 49 __m128i b = _mm_cvtsi64_si128(lru); \ 51 __m128i d = _mm_minpos_epu16(c); \ 53 unsigned int pos = _mm_extract_epi16(d, 1); \ 55 __m128i k = _mm_shuffle_epi8(b, *((__m128i *) &masks[2 * pos]));\ 57 bucket->lru_list = _mm_extract_epi64(k, 0); \ 61 #elif RTE_TABLE_HASH_LRU_STRATEGY == 3 64 #include <x86intrin.h> 66 #include <emmintrin.h> 67 #include <smmintrin.h> 68 #include <xmmintrin.h> 71 #define lru_init(bucket) \ 72 { bucket->lru_list = ~0LLU; } 75 f_lru_pos(uint64_t lru_list)
77 __m128i lst = _mm_set_epi64x((uint64_t)-1, lru_list);
78 __m128i min = _mm_minpos_epu16(lst);
79 return _mm_extract_epi16(min, 1);
81 #define lru_pos(bucket) f_lru_pos(bucket->lru_list) 83 #define lru_update(bucket, mru_val) \ 85 const uint64_t orvals[] = {0xFFFFLLU, 0xFFFFLLU << 16, \ 86 0xFFFFLLU << 32, 0xFFFFLLU << 48, 0LLU}; \ 87 const uint64_t decs[] = {0x1000100010001LLU, 0}; \ 88 __m128i lru = _mm_cvtsi64_si128(bucket->lru_list); \ 89 __m128i vdec = _mm_cvtsi64_si128(decs[mru_val>>2]); \ 90 lru = _mm_subs_epu16(lru, vdec); \ 91 bucket->lru_list = _mm_extract_epi64(lru, 0) | orvals[mru_val]; \