We should alloc big buffers also when guest can receive UFO
pakcets to let the big packets be fit into guest rx buffer.

Fixes 5c5167515d80f78f6bb538492c423adcae31ad65
(virtio-net: Allow UFO feature to be set and advertised.)

Cc: Rusty Russell <ru...@rustcorp.com.au>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Sridhar Samudrala <s...@us.ibm.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
Changes from V1:
- tweak the commit log
---
 drivers/net/virtio_net.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index d75f8ed..5632a99 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1711,7 +1711,8 @@ static int virtnet_probe(struct virtio_device *vdev)
        /* If we can receive ANY GSO packets, we must allocate large ones. */
        if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4) ||
            virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO6) ||
-           virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ECN))
+           virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ECN) ||
+           virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_UFO))
                vi->big_packets = true;
 
        if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF))
-- 
1.8.3.2

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