Re: serious netpoll bug w/NAPI

["David S. Miller" <davem@xxxxxxxxxxxxx>]

On Wed, 16 Feb 2005 15:44:06 -0800
Matt Mackall <mpm@xxxxxxxxxxx> wrote:

> Ok. We've got a few cases:
> 
> 1) recursion on cpu1

If you hit this case, and therefore can't re-enter into ->poll(),
you must drop the packet or so something else if netif_queue_stopped()
since netpoll has no means by which to cause the TX queue to make
forward progress.

Do you at least agree with this?

Perhaps you can create a "pending netpoll() packet" queue so that
you don't have to drop the SKB in this case.  Make the queue get
processed via softint processing.  I think this will work.