5 #ifndef __INCLUDE_RTE_LRU_H__
6 #define __INCLUDE_RTE_LRU_H__
8 #include <rte_config.h>
10 #include "rte_lru_x86.h"
11 #elif defined(RTE_ARCH_ARM64)
12 #include "rte_lru_arm64.h"
14 #undef RTE_TABLE_HASH_LRU_STRATEGY
15 #define RTE_TABLE_HASH_LRU_STRATEGY 1
18 #if RTE_TABLE_HASH_LRU_STRATEGY == 0
20 #define lru_init(bucket) \
25 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
27 #define lru_update(bucket, mru_val) \
33 #elif RTE_TABLE_HASH_LRU_STRATEGY == 1
35 #define lru_init(bucket) \
37 bucket->lru_list = 0x0000000100020003LLU; \
40 #define lru_pos(bucket) (bucket->lru_list & 0xFFFFLLU)
42 #define lru_update(bucket, mru_val) \
44 uint64_t x, pos, x0, x1, x2, mask; \
46 x = bucket->lru_list; \
49 if ((x >> 48) == ((uint64_t) mru_val)) \
52 if (((x >> 32) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
55 if (((x >> 16) & 0xFFFFLLU) == ((uint64_t) mru_val)) \
58 if ((x & 0xFFFFLLU) == ((uint64_t) mru_val)) \
63 mask = (~0LLU) << pos; \
65 x1 = (x >> 16) & mask; \
66 x2 = (x << (48 - pos)) & (0xFFFFLLU << 48); \
70 bucket->lru_list = x; \
73 #elif (RTE_TABLE_HASH_LRU_STRATEGY == 2) || (RTE_TABLE_HASH_LRU_STRATEGY == 3)
81 #error "Incorrect value for RTE_TABLE_HASH_LRU_STRATEGY"