hash: validate hash bucket entries while compiling

[dpdk.git] / lib / librte_hash / rte_cuckoo_hash.h

diff --git a/lib/librte_hash/rte_cuckoo_hash.h b/lib/librte_hash/rte_cuckoo_hash.h
index 7a54e55575f17d9294bbe4d90643e4413e9c89a8..bd6ad1bd66703f6a00aaa261326da46771e6a335 100644 (file)
--- a/lib/librte_hash/rte_cuckoo_hash.h
+++ b/lib/librte_hash/rte_cuckoo_hash.h
@@ -97,6 +97,10 @@ enum add_key_case {
 /** Number of items per bucket. */
 #define RTE_HASH_BUCKET_ENTRIES                8
 
+#if !RTE_IS_POWER_OF_2(RTE_HASH_BUCKET_ENTRIES)
+#error RTE_HASH_BUCKET_ENTRIES must be a power of 2
+#endif
+
 #define NULL_SIGNATURE                 0
 
 #define EMPTY_SLOT                     0