net/mvpp2: fix port speed overflow

ethtool_cmd_speed return uint32 and after the arithmetic
operation in mrvl_get_max_rate func the result is out of range.

Fixes: 429c394417 ("net/mvpp2: support traffic manager")
Cc: stable@dpdk.org
Signed-off-by: Dana Vardi <danat@marvell.com>
Reviewed-by: Liron Himi <lironh@marvell.com>

diff --git a/drivers/net/mvpp2/mrvl_tm.c b/drivers/net/mvpp2/mrvl_tm.c
index e98f576..7e3c46f 100644 (file)
--- a/drivers/net/mvpp2/mrvl_tm.c
+++ b/drivers/net/mvpp2/mrvl_tm.c
@@ -57,7 +57,7 @@ mrvl_get_max_rate(struct rte_eth_dev *dev, uint64_t *rate)
 
        close(fd);
 
-       *rate = ethtool_cmd_speed(&edata) * 1000 * 1000 / 8;
+       *rate = (uint64_t)ethtool_cmd_speed(&edata) * 1000 * 1000 / 8;
 
        return 0;
 }