netdev - Re: [net-next 2/2] macvlan: Enable qdisc backoff logic.

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Date:	Wed, 25 Aug 2010 21:59:11 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Ben Greear <greearb@...delatech.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [net-next 2/2] macvlan:  Enable qdisc backoff logic.

On Wednesday 25 August 2010 21:27:43 Ben Greear wrote:
> > I suppose we need to do something in macvtap to handle this as
> > well, right? A guest trying to send a frame through qemu
> > or vhost net into macvtap needs to be prevented from sending
> > more when we get into this path. Right now, we just ignore
> > the return value of macvlan_start_xmit.
> 
> I have a similar, though slightly more complex, patch for 802.1q
> vlans, but I haven't looked at macvtap at all.
> 
> If these two patches are accepted, I'll post the .1q patch as well.

I think one of us needs to fix macvtap in order for your patch to
go in, because otherwise there is a memory leak or worse when
macvtap fails to retransmit the frame.

	Arnd
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