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net: enable GRO by default for vlan devices

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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>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Brandon Philips 2010-09-15 09:24:24 +00:00 committed by David S. Miller
parent b1cbd5f980
commit 16c3ea785f
1 changed files with 5 additions and 0 deletions
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5
net/core/dev.c
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@ -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)