diff options
| author | Jason Wang <jasowang@redhat.com> | 2015-10-23 00:57:05 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-09 13:42:52 -0500 |
| commit | ecb3bce98d84a4108a89fda482b9db5d5b446c2d (patch) | |
| tree | 9d02e4a5532639d6afa158edf3ab625a39285459 | |
| parent | 200057f03999e051239dac989200430119c6fb76 (diff) | |
macvtap: unbreak receiving of gro skb with frag list
[ Upstream commit f23d538bc24a83c16127c2eb82c9cf1adc2b5149 ]
We don't have fraglist support in TAP_FEATURES. This will lead
software segmentation of gro skb with frag list. Fixes by having
frag list support in TAP_FEATURES.
With this patch single session of netperf receiving were restored from
about 5Gb/s to about 12Gb/s on mlx4.
Fixes a567dd6252 ("macvtap: simplify usage of tap_features")
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/macvtap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index e8c21f911b6f..6185874a088e 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -68,7 +68,7 @@ static const struct proto_ops macvtap_socket_ops; #define TUN_OFFLOADS (NETIF_F_HW_CSUM | NETIF_F_TSO_ECN | NETIF_F_TSO | \ NETIF_F_TSO6 | NETIF_F_UFO) #define RX_OFFLOADS (NETIF_F_GRO | NETIF_F_LRO) -#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG) +#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG | NETIF_F_FRAGLIST) static struct macvlan_dev *macvtap_get_vlan_rcu(const struct net_device *dev) { |