qlcnic: Check FW capability for TSO

Driver checks TSO capability from FW before enabling it.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index f8e39e4..baf5a52 100644
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -820,6 +820,9 @@
 
 static int qlcnic_set_tso(struct net_device *dev, u32 data)
 {
+	struct qlcnic_adapter *adapter = netdev_priv(dev);
+	if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_TSO))
+		return -EOPNOTSUPP;
 	if (data)
 		dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
 	else