netdev - [PATCH net-next 2/2] ip_gre: propogate target device GSO capability to the tunnel device

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Date:	Mon, 18 Feb 2013 15:15:20 +0200
From:	y@...adcom.com
To:	davem@...emloft.net, netdev@...r.kernel.org
cc:	"Dmitry Kravkov" <dmitry@...adcom.com>
Subject: [PATCH net-next 2/2] ip_gre: propogate target device GSO
 capability to the tunnel device

From: Dmitry Kravkov <dmitry@...adcom.com>


Signed-off-by: Dmitry Kravkov <dmitry@...adcom.com>
---
 net/ipv4/ip_gre.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index cdc31ac..31bc941 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1103,8 +1103,14 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
 	tunnel->hlen = addend;
 	/* TCP offload with GRE SEQ is not supported. */
 	if (!(tunnel->parms.o_flags & GRE_SEQ)) {
-		dev->features		|= NETIF_F_GSO_SOFTWARE;
-		dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		/* device supports enc gso offload*/
+		if (tdev->hw_enc_features & NETIF_F_GRE_GSO) {
+			dev->features		|= NETIF_F_TSO;
+			dev->hw_features	|= NETIF_F_TSO;
+		} else {
+			dev->features		|= NETIF_F_GSO_SOFTWARE;
+			dev->hw_features	|= NETIF_F_GSO_SOFTWARE;
+		}
 	}
 
 	return mtu;
-- 
1.7.7.2


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