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34 #ifndef __INCLUDE_RTE_LRU_H__
35 #define __INCLUDE_RTE_LRU_H__
41 #include <rte_config.h>
42 #ifdef RTE_ARCH_X86_64
43 #include "rte_lru_x86.h"
44 #elif defined(RTE_ARCH_ARM64)
45 #include "rte_lru_arm64.h"
47 #undef RTE_TABLE_HASH_LRU_STRATEGY
48 #define RTE_TABLE_HASH_LRU_STRATEGY 1
51 #if RTE_TABLE_HASH_LRU_STRATEGY == 0
53 #define lru_init(bucket) \
58 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
60 #define lru_update(bucket, mru_val) \
66 #elif RTE_TABLE_HASH_LRU_STRATEGY == 1
68 #define lru_init(bucket) \
70 bucket->lru_list = 0x0000000100020003LLU; \
73 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
75 #define lru_update(bucket, mru_val) \
77 uint64_t x, pos, x0, x1, x2, mask; \
79 x = bucket->lru_list; \
82 if ((x >> 48) == ((uint64_t) mru_val)) \
85 if (((x >> 32) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
88 if (((x >> 16) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
91 if ((x & 0xFFFFLLU) == ((uint64_t) mru_val)) \
96 mask = (~0LLU) << pos; \
98 x1 = (x >> 16) & mask; \
99 x2 = (x << (48 - pos)) & (0xFFFFLLU << 48); \
103 bucket->lru_list = x; \
106 #elif (RTE_TABLE_HASH_LRU_STRATEGY == 2) || (RTE_TABLE_HASH_LRU_STRATEGY == 3)
109 * These strategies are implemented in architecture specific header files.
114 #error "Incorrect value for RTE_TABLE_HASH_LRU_STRATEGY"