From: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Date: Tue, 4 Oct 2016 07:16:34 +0000 (+0100)
Subject: hash: fix free slot check
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=5230bc4c77cae884eda5ac392887339108a2b763

hash: fix free slot check

In function rte_hash_cuckoo_insert_mw_tm, while looking for
an empty slot, only the first entry in the bucket was being checked,
as key_idx array was not being iterated.

Fixes: 5fc74c2e146d ("hash: check if slot is empty with key index")

Reported-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---

diff --git a/lib/librte_hash/rte_cuckoo_hash_x86.h b/lib/librte_hash/rte_cuckoo_hash_x86.h
index e16d69cecf..7ffa56f959 100644
--- a/lib/librte_hash/rte_cuckoo_hash_x86.h
+++ b/lib/librte_hash/rte_cuckoo_hash_x86.h
@@ -53,7 +53,7 @@ rte_hash_cuckoo_insert_mw_tm(struct rte_hash_bucket *prim_bkt,
 			*/
 			for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
 				/* Check if slot is available */
-				if (likely(prim_bkt->key_idx == EMPTY_SLOT)) {
+				if (likely(prim_bkt->key_idx[i] == EMPTY_SLOT)) {
 					prim_bkt->signatures[i].current = sig;
 					prim_bkt->signatures[i].alt = alt_hash;
 					prim_bkt->key_idx[i] = new_idx;