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Commit c8fb217a authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
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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: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent dbf34207

drivers/vhost/net.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -266,6 +266,8 @@ static void handle_tx(struct vhost_net *net) 
				 " len %d != %zd\n", err, len);

				 " len %d != %zd\n", err, len);

		if (!zcopy)

		if (!zcopy)

			vhost_add_used_and_signal(&net->dev, vq, head, 0);

			vhost_add_used_and_signal(&net->dev, vq, head, 0);

		else

			vhost_zerocopy_signal_used(vq);

		total_len += len;

		total_len += len;

		if (unlikely(total_len >= VHOST_NET_WEIGHT)) {

		if (unlikely(total_len >= VHOST_NET_WEIGHT)) {

			vhost_poll_queue(&vq->poll);

			vhost_poll_queue(&vq->poll);