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authorEric Dumazet <edumazet@google.com>2013-10-25 18:25:03 -0700
committerDavid S. Miller <davem@davemloft.net>2013-10-28 00:57:29 -0400
commit82d8189826d54740607e6a240e602850ef62a07d (patch)
tree239b1362fbe115628cc48af3d6b5ee73132964c4 /drivers/net/veth.c
parent8c3a897bfab10f68f90252440bb29e6749a7312a (diff)
downloadlinux-82d8189826d54740607e6a240e602850ef62a07d.tar.bz2
veth: extend features to support tunneling
While investigating on a recent vxlan regression, I found veth was using a zero features set for vxlan tunnels. We have to segment GSO frames, copy the payload, and do the checksum. This patch brings a ~200% performance increase We probably have to add hw_enc_features support on other virtual devices. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/veth.c')
-rw-r--r--drivers/net/veth.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index b2d034791e15..b24db7acbf12 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -261,6 +261,8 @@ static const struct net_device_ops veth_netdev_ops = {
#define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
NETIF_F_HW_CSUM | NETIF_F_RXCSUM | NETIF_F_HIGHDMA | \
+ NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL | \
+ NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT | NETIF_F_UFO | \
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_STAG_RX )
@@ -279,6 +281,7 @@ static void veth_setup(struct net_device *dev)
dev->destructor = veth_dev_free;
dev->hw_features = VETH_FEATURES;
+ dev->hw_enc_features = VETH_FEATURES;
}
/*