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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: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
hifive-unleashed-5.1
Jason Wang 2012-05-02 11:42:41 +08:00 committed by Michael S. Tsirkin
parent dbf34207c6
commit c8fb217af5
1 changed files with 2 additions and 0 deletions
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2
drivers/vhost/net.c
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@ -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);