On Monday 10 August 2009, Michael S. Tsirkin wrote:

quoted

Would it be enough to check the dev_queue_xmit() return
code for NETDEV_TX_BUSY?

How would I get notified when it gets free again?

You can do this by creating a socket. Look at how tun does
this now.

Hmm, I was hoping to be able to avoid this, because I can
interact more directly with the outbound physical interface
using dev_queue_xmit() instead of netif_rx_ni().

I'll have a look. Thanks,

	Arnd <><