Commit 0e7ede80 authored Feb 21, 2014 by Jason Wang Committed by David S. Miller Feb 24, 2014

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: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David 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))

Admin message