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* [dpdk-dev] [PATCH] hash: fix wrong size memory calculation
@ 2015-08-31 13:30 Pablo de Lara
  2015-09-09  9:58 ` Thomas Monjalon
  0 siblings, 1 reply; 2+ messages in thread
From: Pablo de Lara @ 2015-08-31 13:30 UTC (permalink / raw)
  To: dev

When calculating the size for the table which allocates
the keys, size was calculated wrongly from multiplying
two 32-bit variables, resulting on a 32-bit number,
before casting to 64-bit, so maximum size was 4G.

Fixes: 48a399119619 ("hash: replace with cuckoo hash implementation")

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 lib/librte_hash/rte_cuckoo_hash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c
index 4da859a..7019763 100644
--- a/lib/librte_hash/rte_cuckoo_hash.c
+++ b/lib/librte_hash/rte_cuckoo_hash.c
@@ -238,7 +238,7 @@ rte_hash_create(const struct rte_hash_parameters *params)
 	const uint32_t key_entry_size = sizeof(struct rte_hash_key) + params->key_len;
 
 	/* Store all keys and leave the first entry as a dummy entry for lookup_bulk */
-	const uint64_t key_tbl_size = key_entry_size * (params->entries + 1);
+	const uint64_t key_tbl_size = (uint64_t) key_entry_size * (params->entries + 1);
 
 	k = rte_zmalloc_socket(NULL, key_tbl_size,
 			RTE_CACHE_LINE_SIZE, params->socket_id);
-- 
2.4.2

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2015-08-31 13:30 [dpdk-dev] [PATCH] hash: fix wrong size memory calculation Pablo de Lara
2015-09-09  9:58 ` Thomas Monjalon

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