[PATCH 3.13 008/187] macvlan: Initialize vlan_features to turn on offload support.

Kamal Mostafa
2014-09-15T23:22:35Z

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: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/macvlan.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 333f8bc..a430b99 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -549,6 +549,7 @@ static int macvlan_init(struct net_device *dev)
(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;
--
1.9.1