Imported Upstream version 16.07-rc2

[deb_dpdk.git] / lib / librte_hash / rte_cuckoo_hash.c

diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c
index e3cc3a7..26e54f6 100644 (file)
--- a/lib/librte_hash/rte_cuckoo_hash.c
+++ b/lib/librte_hash/rte_cuckoo_hash.c
@@ -877,6 +877,26 @@ rte_hash_del_key(const struct rte_hash *h, const void *key)
        return __rte_hash_del_key_with_hash(h, key, rte_hash_hash(h, key));
 }
 
+int
+rte_hash_get_key_with_position(const struct rte_hash *h, const int32_t position,
+                              void **key)
+{
+       RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+
+       struct rte_hash_key *k, *keys = h->key_store;
+       k = (struct rte_hash_key *) ((char *) keys + (position + 1) *
+                                    h->key_entry_size);
+       *key = k->key;
+
+       if (position !=
+           __rte_hash_lookup_with_hash(h, *key, rte_hash_hash(h, *key),
+                                       NULL)) {
+               return -ENOENT;
+       }
+
+       return 0;
+}
+
 /* Lookup bulk stage 0: Prefetch input key */
 static inline void
 lookup_stage0(unsigned *idx, uint64_t *lookup_mask,