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Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/virtio_net.c44
1 files changed, 25 insertions, 19 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 73f01db59ab..ec43284ffd1 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -282,12 +282,6 @@ static int virtnet_open(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
- try_fill_recv(vi);
-
- /* If we didn't even get one input buffer, we're useless. */
- if (vi->num == 0)
- return -ENOMEM;
-
napi_enable(&vi->napi);
return 0;
}
@@ -295,22 +289,9 @@ static int virtnet_open(struct net_device *dev)
static int virtnet_close(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
- struct sk_buff *skb;
napi_disable(&vi->napi);
- /* networking core has neutered skb_xmit_done/skb_recv_done, so don't
- * worry about races vs. get(). */
- vi->rvq->vq_ops->shutdown(vi->rvq);
- while ((skb = __skb_dequeue(&vi->recv)) != NULL) {
- kfree_skb(skb);
- vi->num--;
- }
- vi->svq->vq_ops->shutdown(vi->svq);
- while ((skb = __skb_dequeue(&vi->send)) != NULL)
- kfree_skb(skb);
-
- BUG_ON(vi->num != 0);
return 0;
}
@@ -379,10 +360,22 @@ static int virtnet_probe(struct virtio_device *vdev)
pr_debug("virtio_net: registering device failed\n");
goto free_send;
}
+
+ /* Last of all, set up some receive buffers. */
+ try_fill_recv(vi);
+
+ /* If we didn't even get one input buffer, we're useless. */
+ if (vi->num == 0) {
+ err = -ENOMEM;
+ goto unregister;
+ }
+
pr_debug("virtnet: registered device %s\n", dev->name);
vdev->priv = vi;
return 0;
+unregister:
+ unregister_netdev(dev);
free_send:
vdev->config->del_vq(vi->svq);
free_recv:
@@ -395,6 +388,19 @@ free:
static void virtnet_remove(struct virtio_device *vdev)
{
struct virtnet_info *vi = vdev->priv;
+ struct sk_buff *skb;
+
+ /* Free our skbs in send and recv queues, if any. */
+ vi->rvq->vq_ops->shutdown(vi->rvq);
+ while ((skb = __skb_dequeue(&vi->recv)) != NULL) {
+ kfree_skb(skb);
+ vi->num--;
+ }
+ vi->svq->vq_ops->shutdown(vi->svq);
+ while ((skb = __skb_dequeue(&vi->send)) != NULL)
+ kfree_skb(skb);
+
+ BUG_ON(vi->num != 0);
vdev->config->del_vq(vi->svq);
vdev->config->del_vq(vi->rvq);