From: Pravin B Shelar <pshelar@nicira.com>
Date: Thu, 7 Mar 2013 09:28:08 +0000 (+0000)
Subject: tunnel: Inherit NETIF_F_SG for hw_enc_features.
X-Git-Tag: v3.10-rc1~66^2~544
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ee579677c29954f20e48e5bb80ae85b30100c2e0;p=platform%2Fkernel%2Flinux-3.10.git

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>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index bb99993..90cee5b 100644
--- 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)