[dpdk-dev] [PATCH v2 2/4] net/bnxt: ensure entry_length is unsigned in bnxt_alloc_vnic_attributes

John W. Linville linville at tuxdriver.com
Thu Sep 29 19:39:34 CEST 2016


Otherwise, the inherent cast when multiplying entry_length by max_vnics
in the call to rte_memzone_reserve could promote max_vnics to a signed
value, causing hilarity to ensue...

Coverity issue: 127557
Fixes: 9738793f28ec ("net/bnxt: add VNIC functions and structs")

Signed-off-by: John W. Linville <linville at tuxdriver.com>
---
v2: fix-up changelog entries based-on comments from Ferruh Yigit

 drivers/net/bnxt/bnxt_vnic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_vnic.c b/drivers/net/bnxt/bnxt_vnic.c
index c04c4c740645..1b5f54c4d1ae 100644
--- a/drivers/net/bnxt/bnxt_vnic.c
+++ b/drivers/net/bnxt/bnxt_vnic.c
@@ -175,7 +175,7 @@ int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 	struct rte_pci_device *pdev = bp->pdev;
 	const struct rte_memzone *mz;
 	char mz_name[RTE_MEMZONE_NAMESIZE];
-	int entry_length = RTE_CACHE_LINE_ROUNDUP(
+	uint16_t entry_length = RTE_CACHE_LINE_ROUNDUP(
 				HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
 				HW_HASH_KEY_SIZE);
 	uint16_t max_vnics;
-- 
2.7.4



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