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datapath: Enable vlan offload on internal devices.

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Although it is generally best to configure vlans directly though
Open vSwitch, enabling vlan acceleration on internal devices can
avoid some issues and hardware limitations if Linux vlan devices
are used.  It is only used on kernels that support modern vlan
data structures, which are 2.6.27 and later.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Jesse Gross
2011-03-04 15:52:43 -08:00
parent 70315176de
commit 926ea16ea3
1 changed files with 5 additions and 0 deletions
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5
datapath/vport-internal_dev.c
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@@ -176,6 +176,11 @@ static void do_setup(struct net_device *netdev)
netdev->features = NETIF_F_LLTX | NETIF_F_SG | NETIF_F_FRAGLIST |
NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_TSO;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
netdev->vlan_features = netdev->features;
netdev->features |= NETIF_F_HW_VLAN_TX;
#endif
vport_gen_rand_ether_addr(netdev->dev_addr);
}