[dpdk-stable] net/i40e: fix integer overflow

[Xiao Zhang <xiao.zhang@intel.com>]

When configuring i40e rx queue, the temporary variable to store max packet
length is not big enough which leads to integer overflow issue. This
patch is to fix the issue by changing the variable type from uint16_t
to uint32_t.

Fixes: c511a96a34d7 ("mbuf: add accessors for data room and private
size")
Cc: stable@dpdk.org

Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
---
 drivers/net/i40e/i40e_rxtx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index bfe161f..ca15b12 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -2596,7 +2596,8 @@ i40e_rx_queue_config(struct i40e_rx_queue *rxq)
 	struct i40e_pf *pf = I40E_VSI_TO_PF(rxq->vsi);
 	struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi);
 	struct rte_eth_dev_data *data = pf->dev_data;
-	uint16_t buf_size, len;
+	uint16_t buf_size;
+	uint32_t len;
 
 	buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) -
 		RTE_PKTMBUF_HEADROOM);
-- 
2.7.4