From 1d962ecf1e8d42c09abac2f715239a592c9415de Mon Sep 17 00:00:00 2001 From: "brenohl@br.ibm.com" Date: Wed, 18 Jul 2012 09:29:08 +0000 Subject: [PATCH] cxgb3: Set vlan_feature on net_device cxgb3 interface has a bad performance when VLAN is set. On my current setup, a PowerLinux 7R2, I am able to get around 7 Gbps on a TCP_STREAM (8 instances, 4k message). With this patch, I am able to reach 9.5 Gbps. Signed-off-by: Breno Leitao Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c index 9b0874957df5..6505070abcfa 100644 --- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c +++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c @@ -3173,6 +3173,9 @@ static void __devinit cxgb3_init_iscsi_mac(struct net_device *dev) pi->iscsic.mac_addr[3] |= 0x80; } +#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) +#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \ + NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA) static int __devinit init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -3293,6 +3296,7 @@ static int __devinit init_one(struct pci_dev *pdev, netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_RX; netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_TX; + netdev->vlan_features |= netdev->features & VLAN_FEAT; if (pci_using_dac) netdev->features |= NETIF_F_HIGHDMA; -- 2.11.4.GIT