From patchwork Mon Dec 3 17:31:51 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: vhost-net: initialize zcopy packet counters Date: Mon, 03 Dec 2012 07:31:51 -0000 From: "Michael S. Tsirkin" X-Patchwork-Id: 203406 Message-Id: <20121203173151.GA30949@redhat.com> To: davem@davemloft.net Cc: "Michael S. Tsirkin" , kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org These packet counters are used to drive the zercopy selection heuristic so nothing too bad happens if they are off a bit - and they are also reset once in a while. But it's cleaner to clear them when backend is set so that we start in a known state. Signed-off-by: Michael S. Tsirkin --- drivers/vhost/net.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 67898fa..ff6c9199 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -823,6 +823,9 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd) r = vhost_init_used(vq); if (r) goto err_vq; + + n->tx_packets = 0; + n->tx_zcopy_err = 0; } mutex_unlock(&vq->mutex);