releases/3.10.53/macvlan-initialize-vlan_features-to-turn-on-offload-support.patch

   1 From foo@baz Fri Aug  8 08:48:58 PDT 2014
   2 From: Vlad Yasevich <vyasevic@redhat.com>
   3 Date: Thu, 31 Jul 2014 10:30:25 -0400
   4 Subject: macvlan: Initialize vlan_features to turn on offload support.
   5
   6 From: Vlad Yasevich <vyasevic@redhat.com>
   7
   8 [ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ]
   9
  10 Macvlan devices do not initialize vlan_features.  As a result,
  11 any vlan devices configured on top of macvlans perform very poorly.
  12 Initialize vlan_features based on the vlan features of the lower-level
  13 device.
  14
  15 Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
  16 Signed-off-by: David S. Miller <davem@davemloft.net>
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18 ---
  19  drivers/net/macvlan.c |    1 +
  20  1 file changed, 1 insertion(+)
  21
  22 --- a/drivers/net/macvlan.c
  23 +++ b/drivers/net/macvlan.c
  24 @@ -500,6 +500,7 @@ static int macvlan_init(struct net_devic
  25                                   (lowerdev->state & MACVLAN_STATE_MASK);
  26         dev->features           = lowerdev->features & MACVLAN_FEATURES;
  27         dev->features           |= NETIF_F_LLTX;
  28 +       dev->vlan_features      = lowerdev->vlan_features & MACVLAN_FEATURES;
  29         dev->gso_max_size       = lowerdev->gso_max_size;
  30         dev->iflink             = lowerdev->ifindex;
  31         dev->hard_header_len    = lowerdev->hard_header_len;