netdev - Re: [PATCH 4/6] d80211: don't display name of invisible network device

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Date:	Wed, 31 Jan 2007 19:58:58 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	Jan Kiszka <jan.kiszka@...glemail.com>
Cc:	Jiri Benc <jbenc@...e.cz>, netdev@...r.kernel.org,
	"John W. Linville" <linville@...driver.com>
Subject: Re: [PATCH 4/6] d80211: don't display name of invisible network
	device

On Tue, 2007-01-30 at 15:00 +0100, Jan Kiszka wrote:

> > If the master netdev no longer has a name, how can you still use `tc' on
> > it?
> 
> I hope you can't,

You know, being able to is the only (user interface) reason for the
master dev's existence.

> because that was recently proven to be able to
> subtly break the stack:
> 
> http://www.mail-archive.com/netdev@vger.kernel.org/msg29219.html

Well, that's a bug indeed, but the cure isn't "don't allow any qos
operations" but rather "don't allow removal of the 802.11 qdisc".

johannes

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