| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 12/39] macvlan: Initialize vlan_features to turn on offload support. | Date | Fri, 8 Aug 2014 14:34:58 -0700 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Vlad Yasevich <vyasevic@redhat.com>
[ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ]
Macvlan devices do not initialize vlan_features. As a result, any vlan devices configured on top of macvlans perform very poorly. Initialize vlan_features based on the vlan features of the lower-level device.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/macvlan.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -548,6 +548,7 @@ static int macvlan_init(struct net_devic (lowerdev->state & MACVLAN_STATE_MASK); dev->features = lowerdev->features & MACVLAN_FEATURES; dev->features |= ALWAYS_ON_FEATURES; + dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; dev->gso_max_size = lowerdev->gso_max_size; dev->iflink = lowerdev->ifindex; dev->hard_header_len = lowerdev->hard_header_len;
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