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34 #ifndef __INCLUDE_RTE_LRU_H__
35 #define __INCLUDE_RTE_LRU_H__
41 #ifdef RTE_ARCH_X86_64
42 #include "rte_lru_x86.h"
43 #elif defined(RTE_ARCH_ARM64)
44 #include "rte_lru_arm64.h"
46 #undef RTE_TABLE_HASH_LRU_STRATEGY
47 #define RTE_TABLE_HASH_LRU_STRATEGY 1
50 #if RTE_TABLE_HASH_LRU_STRATEGY == 0
52 #define lru_init(bucket) \
57 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
59 #define lru_update(bucket, mru_val) \
65 #elif RTE_TABLE_HASH_LRU_STRATEGY == 1
67 #define lru_init(bucket) \
69 bucket->lru_list = 0x0000000100020003LLU; \
72 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
74 #define lru_update(bucket, mru_val) \
76 uint64_t x, pos, x0, x1, x2, mask; \
78 x = bucket->lru_list; \
81 if ((x >> 48) == ((uint64_t) mru_val)) \
84 if (((x >> 32) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
87 if (((x >> 16) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
90 if ((x & 0xFFFFLLU) == ((uint64_t) mru_val)) \
95 mask = (~0LLU) << pos; \
97 x1 = (x >> 16) & mask; \
98 x2 = (x << (48 - pos)) & (0xFFFFLLU << 48); \
102 bucket->lru_list = x; \
105 #elif (RTE_TABLE_HASH_LRU_STRATEGY == 2) || (RTE_TABLE_HASH_LRU_STRATEGY == 3)
108 * These strategies are implemented in architecture specific header files.
113 #error "Incorrect value for RTE_TABLE_HASH_LRU_STRATEGY"