Commit c8fb217a authored May 02, 2012 by Jason Wang Committed by Michael S. Tsirkin May 02, 2012

vhost_net: zerocopy: adding and signalling immediately when fully copied



When a packet were fully copied in zerocopy, we don't wait for the DMA done to
mark the done flag, so after the packet were passed to lower device, we need to
add used and signal guest immediately.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent dbf34207

drivers/vhost/net.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -266,6 +266,8 @@ static void handle_tx(struct vhost_net *net)
		" len %d != %zd\n", err, len);
		if (!zcopy)
		vhost_add_used_and_signal(&net->dev, vq, head, 0);
		else
		vhost_zerocopy_signal_used(vq);
		total_len += len;
		if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
		vhost_poll_queue(&vq->poll);

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