qlge: Add offload features to vlan interfaces
authorbrenohl@br.ibm.com <brenohl@br.ibm.com>
Fri, 27 Jul 2012 08:54:52 +0000 (08:54 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 30 Jul 2012 06:18:30 +0000 (23:18 -0700)
This patch fills the net_device vlan_features with the proper hardware features,
thus, improving the vlan interface performance.

With the patch applied, I can see around 148% improvement on a TCP_STREAM test,
from 3.5 Gb/s to 8.7 Gb/s. On TCP_RR, I see a 11% improvement, from 18k
to 20. The CPU utilization is almost the same on both cases, from the comparison
above.

Signed-off-by: Breno Leitao <brenohl@br.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qlge/qlge_main.c

index 3769f5711cc3a28f373d06c60563eb2942a081c9..b53a3b60b6480e340acf8e73b46e04319b942c3b 100644 (file)
@@ -4682,6 +4682,7 @@ static int __devinit qlge_probe(struct pci_dev *pdev,
                NETIF_F_HW_VLAN_TX | NETIF_F_RXCSUM;
        ndev->features = ndev->hw_features |
                NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;
+       ndev->vlan_features = ndev->hw_features;
 
        if (test_bit(QL_DMA64, &qdev->flags))
                ndev->features |= NETIF_F_HIGHDMA;