Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b3369c1fb410fddeb38a404316c861395f6d6ae8
Commit: b3369c1fb410fddeb38a404316c861395f6d6ae8
Parent: 34a48579e4fb380604d06f0409db3851bd22d785
Author: Rusty Russell <[EMAIL PROTECTED]>
AuthorDate: Mon Feb 4 23:50:02 2008 -0500
Committer: Rusty Russell <[EMAIL PROTECTED]>
CommitDate: Mon Feb 4 23:50:03 2008 +1100
virtio: populate network rings in the probe routine, not open
Since we want to reset the device to remove them, this is simpler
(device is reset for us on driver remove).
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
---
drivers/net/virtio_net.c | 44 +++++++++++++++++++++++++-------------------
1 files changed, 25 insertions(+), 19 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 73f01db..ec43284 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);
-
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