[PATCH] net: enable GRO by default for vlan devices

Brandon Philips
2010-09-15T19:24:24Z

Currently vlan devices don't have GRO by default as none of the Ethernet
drivers add NETIF_F_GRO to their vlan_features.

As GRO is a software feature add GRO to dev->vlan_features in
register_netdevice() and let vlan_dev_init() take care that it gets
enabled only when dev->features has NETIF_F_GRO too.

Signed-off-by: Brandon Philips <bphilips@suse.de>

---
net/core/dev.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index fc2dc93..e7a6bff 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5057,6 +5057,11 @@ int register_netdevice(struct net_device *dev)
if (dev->features & NETIF_F_SG)
dev->features |= NETIF_F_GSO;

+ /* Enable GRO for vlans by default if dev->features has GRO also.
+ * vlan_dev_init() will do the dev->features check.
+ */
+ dev->vlan_features |= NETIF_F_GRO;
+
ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev);
ret = notifier_to_errno(ret);
if (ret)
--
1.7.1

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