DPDK  17.05.2
rte_hash.h
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1 /*-
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33 
34 #ifndef _RTE_HASH_H_
35 #define _RTE_HASH_H_
36 
43 #include <stdint.h>
44 #include <stddef.h>
45 
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49 
51 #define RTE_HASH_ENTRIES_MAX (1 << 30)
52 
54 #define RTE_HASH_NAMESIZE 32
55 
57 #define RTE_HASH_LOOKUP_BULK_MAX 64
58 #define RTE_HASH_LOOKUP_MULTI_MAX RTE_HASH_LOOKUP_BULK_MAX
59 
61 #define RTE_HASH_EXTRA_FLAGS_TRANS_MEM_SUPPORT 0x01
62 
64 #define RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD 0x02
65 
67 typedef uint32_t hash_sig_t;
68 
70 typedef uint32_t (*rte_hash_function)(const void *key, uint32_t key_len,
71  uint32_t init_val);
72 
74 typedef int (*rte_hash_cmp_eq_t)(const void *key1, const void *key2, size_t key_len);
75 
80  const char *name;
81  uint32_t entries;
82  uint32_t reserved;
83  uint32_t key_len;
85  uint32_t hash_func_init_val;
86  int socket_id;
87  uint8_t extra_flag;
88 };
89 
91 struct rte_hash;
92 
110 struct rte_hash *
111 rte_hash_create(const struct rte_hash_parameters *params);
112 
124 void rte_hash_set_cmp_func(struct rte_hash *h, rte_hash_cmp_eq_t func);
125 
136 struct rte_hash *
137 rte_hash_find_existing(const char *name);
138 
144 void
145 rte_hash_free(struct rte_hash *h);
146 
152 void
153 rte_hash_reset(struct rte_hash *h);
154 
171 int
172 rte_hash_add_key_data(const struct rte_hash *h, const void *key, void *data);
173 
193 int32_t
194 rte_hash_add_key_with_hash_data(const struct rte_hash *h, const void *key,
195  hash_sig_t sig, void *data);
196 
211 int32_t
212 rte_hash_add_key(const struct rte_hash *h, const void *key);
213 
231 int32_t
232 rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key, hash_sig_t sig);
233 
250 int32_t
251 rte_hash_del_key(const struct rte_hash *h, const void *key);
252 
271 int32_t
272 rte_hash_del_key_with_hash(const struct rte_hash *h, const void *key, hash_sig_t sig);
273 
289 int
290 rte_hash_get_key_with_position(const struct rte_hash *h, const int32_t position,
291  void **key);
292 
308 int
309 rte_hash_lookup_data(const struct rte_hash *h, const void *key, void **data);
310 
329 int
330 rte_hash_lookup_with_hash_data(const struct rte_hash *h, const void *key,
331  hash_sig_t sig, void **data);
332 
348 int32_t
349 rte_hash_lookup(const struct rte_hash *h, const void *key);
350 
368 int32_t
369 rte_hash_lookup_with_hash(const struct rte_hash *h,
370  const void *key, hash_sig_t sig);
371 
383 hash_sig_t
384 rte_hash_hash(const struct rte_hash *h, const void *key);
385 
403 int
404 rte_hash_lookup_bulk_data(const struct rte_hash *h, const void **keys,
405  uint32_t num_keys, uint64_t *hit_mask, void *data[]);
406 
426 int
427 rte_hash_lookup_bulk(const struct rte_hash *h, const void **keys,
428  uint32_t num_keys, int32_t *positions);
429 
449 int32_t
450 rte_hash_iterate(const struct rte_hash *h, const void **key, void **data, uint32_t *next);
451 #ifdef __cplusplus
452 }
453 #endif
454 
455 #endif /* _RTE_HASH_H_ */