bnx2x: Do not allow enabling LRO if disable_tpa=1

Bug fix: Do not allow enabling LRO if disable_tpa=1.
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2x_main.c

@@ -9968,12 +9968,14 @@ static int bnx2x_set_flags(struct net_device *dev, u32 data)
 
 	/* TPA requires Rx CSUM offloading */
 	if ((data & ETH_FLAG_LRO) && bp->rx_csum) {
+		if (!disable_tpa) {
 			if (!(dev->features & NETIF_F_LRO)) {
 				dev->features |= NETIF_F_LRO;
 				bp->flags |= TPA_ENABLE_FLAG;
 				changed = 1;
 			}
-
+		} else
+			rc = -EINVAL;
 	} else if (dev->features & NETIF_F_LRO) {
 		dev->features &= ~NETIF_F_LRO;
 		bp->flags &= ~TPA_ENABLE_FLAG;