netdev - Re: [PATCH][NET_SCHED] sch_api: fix qdisc_tree_decrease

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Message-ID: <20080415130045.GB4993@ff.dom.local>
Date:	Tue, 15 Apr 2008 13:00:45 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	David Miller <davem@...emloft.net>, enrico@...erclick.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH][NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop

On Tue, Apr 15, 2008 at 02:37:32PM +0200, Patrick McHardy wrote:
> Jarek Poplawski wrote:
>> On Mon, Apr 14, 2008 at 03:11:02PM -0700, David Miller wrote:
>> ...
>>>> Jarek Poplawski wrote:
>> ...
>>>>> After this fix qdisc_lookup() is omitted both for ingress and root
>>>>> parents, but looking for root is only wasting a little time here...
>>
>> ...Actually, there is yet a possibility that somebody uses ffff:
>> handle for a qdisc (not ingress), which could make here a little
>> difference, so this place could be improved for this case (even
>> with something like my earlier debugging patch in this thread,
>> which BTW could be a safety for maybe some other quirks here),
>> but it seems it would be better to discourage using this handle
>> for anything but ingress.
>
>
> I don't think we should do that, it would be preferable to
> compare the entire handle instead of just the major to avoid
> this.

Probably you are right... I guess you could handle this?

Regards,
Jarek P.
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