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Commit 0e7ede80 authored by Jason Wang's avatar Jason Wang Committed by David S. Miller
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virtio-net: alloc big buffers also when guest can receive UFO 



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

Fixes 5c516751
(virtio-net: Allow UFO feature to be set and advertised.)

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 916e4cf4

drivers/net/virtio_net.c

+2 −1
Original line number Diff line number Diff line
@@ -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))