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From: Stephen Hemminger <shemminger@vyatta.com>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>,
	David Miller <davem@davemloft.net>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	netdev@vger.kernel.org
Subject: Re: [PATCH 1/2] sch_netem: Remove classful functionality
Date: Fri, 31 Oct 2008 09:45:07 -0700	[thread overview]
Message-ID: <20081031094507.09536b08@extreme> (raw)
In-Reply-To: <20081031132010.GA18895@ff.dom.local>

On Fri, 31 Oct 2008 13:20:10 +0000
Jarek Poplawski <jarkao2@gmail.com> wrote:

> Patrick McHardy noticed that: "a lot of the functionality of netem
> requires the inner tfifo anyways and rate-limiting is usually done
> on top of netem. So I would suggest so either hard-wire the tfifo
> qdisc or at least make the assumption that inner qdiscs are
> work-conserving.", and later: "- a lot of other qdiscs still don't
> work as inner qdiscs of netem [...]".
> 
> So, according to his suggestion, this patch removes classful options
> of netem. The main reason of this change is to remove ops->requeue()
> method, which is currently used only by netem.
> 
> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
>

Okay, only if you add the following functionality back:
  * rate control, it doesn't have TBF, some other rate limiting
    is fine.

  * option for pure fifo or reordering based on jitter.

I have no problem with changing implementation as long as the same
feature set used by users remain.

  reply	other threads:[~2008-10-31 16:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-31 13:20 [PATCH 1/2] sch_netem: Remove classful functionality Jarek Poplawski
2008-10-31 16:45 ` Stephen Hemminger [this message]
2008-11-02  7:37 ` David Miller
2008-11-03  8:29   ` Jarek Poplawski
2008-11-03 11:20     ` Patrick McHardy
2008-11-03 17:06       ` Stephen Hemminger
2008-11-04  9:56         ` Jarek Poplawski
2008-11-04 16:25           ` Stephen Hemminger
2008-11-04 21:42             ` Patrick McHardy
2008-11-04 11:04         ` Patrick McHardy

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