tunnel: Inherit NETIF_F_SG for hw_enc_features.

Inherit scatergather feature for tunnel devices to avoid copy for TSO packets of tunneling device like GRE. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Mar 9, 2013 · ee57967 · ee57967
1 parent ec5f061
commit ee57967
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/net/core/dev.c b/net/core/dev.c
@@ -5205,6 +5205,10 @@ int register_netdevice(struct net_device *dev)
 	 */
 	dev->vlan_features |= NETIF_F_HIGHDMA;
 
+	/* Make NETIF_F_SG inheritable to tunnel devices.
+	 */
+	dev->hw_enc_features |= NETIF_F_SG;
+
 	ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev);
 	ret = notifier_to_errno(ret);
 	if (ret)