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Commit 82d81898 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

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: default avatarEric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8c3a897b

drivers/net/veth.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

}



/*