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authorVlad Yasevich <vyasevic@redhat.com>2014-03-26 11:47:56 -0400
committerDavid S. Miller <davem@davemloft.net>2014-03-27 15:00:37 -0400
commitfc0d48b8fb449ca007b2057328abf736cb516168 (patch)
tree9c0a39d0db9ee11261c6261035ff355157720668 /net/8021q/vlan.c
parent14a0d635d18d0fb552dcc979d6d25106e6541f2e (diff)
vlan: Set hard_header_len according to available acceleration
Currently, if the card supports CTAG acceleration we do not account for the vlan header even if we are configuring an 8021AD vlan. This may not be best since we'll do software tagging for 8021AD which will cause data copy on skb head expansion Configure the length based on available hw offload capabilities and vlan protocol. CC: Patrick McHardy <kaber@trash.net> Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan.c')
-rw-r--r--net/8021q/vlan.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index ec9909935fb6..175273f38cb1 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -307,9 +307,11 @@ static void vlan_sync_address(struct net_device *dev,
static void vlan_transfer_features(struct net_device *dev,
struct net_device *vlandev)
{
+ struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+
vlandev->gso_max_size = dev->gso_max_size;
- if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
+ if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto))
vlandev->hard_header_len = dev->hard_header_len;
else
vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;