diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c
index 4cf530ac149d5cd138f63c18fa967525b056e072..9246d2fa6cf9bfa835c34ded95b6c8febddebe77 100644
--- a/drivers/net/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/cxgb4vf/cxgb4vf_main.c
@@ -1533,15 +1533,20 @@ static void cxgb4vf_get_wol(struct net_device *dev,
 	memset(&wol->sopass, 0, sizeof(wol->sopass));
 }
 
+/*
+ * TCP Segmentation Offload flags which we support.
+ */
+#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
+
 /*
  * Set TCP Segmentation Offloading feature capabilities.
  */
 static int cxgb4vf_set_tso(struct net_device *dev, u32 tso)
 {
 	if (tso)
-		dev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+		dev->features |= TSO_FLAGS;
 	else
-		dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+		dev->features &= ~TSO_FLAGS;
 	return 0;
 }
 
@@ -2610,7 +2615,7 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
 		netif_carrier_off(netdev);
 		netdev->irq = pdev->irq;
 
-		netdev->features = (NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
+		netdev->features = (NETIF_F_SG | TSO_FLAGS |
 				    NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 				    NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
 				    NETIF_F_GRO);