netdev - Re: [PATCH] net: trap attempts to modify noop qdisc

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Message-Id: <20080806.231851.193702040.davem@davemloft.net>
Date:	Wed, 06 Aug 2008 23:18:51 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	stephen.hemminger@...tta.com
Cc:	kaber@...sh.net, netdev@...r.kernel.org
Subject: Re: [PATCH] net: trap attempts to modify noop qdisc

From: Stephen Hemminger <stephen.hemminger@...tta.com>
Date: Wed, 6 Aug 2008 23:15:16 -0700

> I think the root of your problem (bad pun) is that the new code
> is assuming that changes to the root are done with parent handle of 0,
> but the API is for the parent handle to be TC_H_ROOT (0xFFFFFFFFU).

Yes, that's likely it.  I'm playing with some patches now.

BTW, destroying the noop_qdisc is legal, that's why we check
TCF_F_BUILTIN there.

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