netdev - [PATCH net-next v5 3/5] xen-netback: Unconditionally set NETIF_F

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Message-ID: <1381942232-26268-4-git-send-email-paul.durrant@citrix.com>
Date:	Wed, 16 Oct 2013 17:50:30 +0100
From:	Paul Durrant <paul.durrant@...rix.com>
To:	<xen-devel@...ts.xen.org>, <netdev@...r.kernel.org>
CC:	Paul Durrant <paul.durrant@...rix.com>,
	Wei Liu <wei.liu2@...rix.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Ian Campbell <ian.campbell@...rix.com>
Subject: [PATCH net-next v5 3/5] xen-netback: Unconditionally set NETIF_F_RXCSUM

There is no mechanism to insist that a guest always generates a packet
with good checksum (at least for IPv4) so we must handle checksum
offloading from the guest and hence should set NETIF_F_RXCSUM.

Signed-off-by: Paul Durrant <paul.durrant@...rix.com>
Cc: Wei Liu <wei.liu2@...rix.com>
Cc: David Vrabel <david.vrabel@...rix.com>
Cc: Ian Campbell <ian.campbell@...rix.com>
---
 drivers/net/xen-netback/interface.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 8e92783..cb0d8ea 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -321,7 +321,7 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid,
 	dev->hw_features = NETIF_F_SG |
 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 		NETIF_F_TSO;
-	dev->features = dev->hw_features;
+	dev->features = dev->hw_features | NETIF_F_RXCSUM;
 	SET_ETHTOOL_OPS(dev, &xenvif_ethtool_ops);
 
 	dev->tx_queue_len = XENVIF_QUEUE_LENGTH;
-- 
1.7.10.4

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