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Net patches

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Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

Net patches

# gpg: Signature made Thu 04 Sep 2014 17:32:44 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/net-pull-request:
  virtio-net: purge outstanding packets when starting vhost
  net: complete all queued packets on VM stop
  net: invoke callback when purging queue
  virtio: don't call device on !vm_running
  virtio-net: don't run bh on vm stopped
  net: Forbid dealing with packets when VM is not running

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-09-04 17:39:07 +01:00
commit 8cf8c92e77
4 changed files with 64 additions and 3 deletions
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15
hw/net/virtio-net.c
View file

@ -125,10 +125,23 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status)
return;
}
if (!n->vhost_started) {
int r;
int r, i;
if (!vhost_net_query(get_vhost_net(nc->peer), vdev)) {
return;
}
/* Any packets outstanding? Purge them to avoid touching rings
* when vhost is running.
*/
for (i = 0; i < queues; i++) {
NetClientState *qnc = qemu_get_subqueue(n->nic, i);
/* Purge both directions: TX and RX. */
qemu_net_queue_purge(qnc->peer->incoming_queue, qnc);
qemu_net_queue_purge(qnc->incoming_queue, qnc->peer);
}
n->vhost_started = 1;
r = vhost_net_start(vdev, n->nic->ncs, queues);
if (r < 0) {

9
hw/virtio/virtio.c
View file

@ -1108,7 +1108,10 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
bool backend_run = running && (vdev->status & VIRTIO_CONFIG_S_DRIVER_OK);
vdev->vm_running = running;
if (running) {
vdev->vm_running = running;
}
if (backend_run) {
virtio_set_status(vdev, vdev->status);
@ -1121,6 +1124,10 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
if (!backend_run) {
virtio_set_status(vdev, vdev->status);
}
if (!running) {
vdev->vm_running = running;
}
}
void virtio_init(VirtIODevice *vdev, const char *name,