diff options
| author | Vlad Yasevich <vyasevic@redhat.com> | 2014-03-26 11:47:56 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-27 15:00:37 -0400 |
| commit | fc0d48b8fb449ca007b2057328abf736cb516168 (patch) | |
| tree | 9c0a39d0db9ee11261c6261035ff355157720668 | |
| parent | 14a0d635d18d0fb552dcc979d6d25106e6541f2e (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>
| -rw-r--r-- | net/8021q/vlan.c | 4 | ||||
| -rw-r--r-- | net/8021q/vlan_dev.c | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index ec9909935fb..175273f38cb 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; diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 4b65aa492fb..a9591ff2b67 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -592,7 +592,8 @@ static int vlan_dev_init(struct net_device *dev) #endif dev->needed_headroom = real_dev->needed_headroom; - if (real_dev->features & NETIF_F_HW_VLAN_CTAG_TX) { + if (vlan_hw_offload_capable(real_dev->features, + vlan_dev_priv(dev)->vlan_proto)) { dev->header_ops = &vlan_passthru_header_ops; dev->hard_header_len = real_dev->hard_header_len; } else { |