On Mon, 21 Jun 2010 06:03:16 pm Michael S. Tsirkin wrote:
> On Mon, Jun 21, 2010 at 12:13:49PM +0930, Rusty Russell wrote:
> > - return NETDEV_TX_BUSY;
> > + kfree_skb(skb);
> > + return NETDEV_TX_OK;
>
> If we do so, let's increment the dropped counter and/or error counter?
Yep, here's the extra change:
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -571,14 +571,16 @@ static netdev_tx_t start_xmit(struct sk_
/* This can happen with OOM and indirect buffers. */
if (unlikely(capacity < 0)) {
if (net_ratelimit()) {
- if (likely(capacity == -ENOMEM))
+ if (likely(capacity == -ENOMEM)) {
dev_warn(&dev->dev,
"TX queue failure: out of memory\n");
- else
+ } else {
+ dev->stats.tx_fifo_errors++;
dev_warn(&dev->dev,
"Unexpected TX queue failure: %d\n",
capacity);
}
+ dev->stats.tx_dropped++;
kfree_skb(skb);
return NETDEV_TX_OK;
}
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