netdev - Re: [PATCH 2/3][NET_BATCH] net core use batching

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Date:	Mon, 01 Oct 2007 09:21:40 -0400
From:	jamal <hadi@...erus.ca>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	David Miller <davem@...emloft.net>, krkumar2@...ibm.com,
	johnpol@....mipt.ru, herbert@...dor.apana.org.au,
	shemminger@...ux-foundation.org, jagana@...ibm.com,
	Robert.Olsson@...a.slu.se, rick.jones2@...com, xma@...ibm.com,
	gaagaan@...il.com, netdev@...r.kernel.org, rdreier@...co.com,
	peter.p.waskiewicz.jr@...el.com, mcarlson@...adcom.com,
	jeff@...zik.org, mchan@...adcom.com, general@...ts.openfabrics.org,
	kumarkr@...ux.ibm.com, tgraf@...g.ch, randy.dunlap@...cle.com,
	sri@...ibm.com
Subject: Re: [PATCH 2/3][NET_BATCH] net core use batching

On Mon, 2007-01-10 at 12:42 +0200, Patrick McHardy wrote:
> jamal wrote:

> > +	while ((skb = __skb_dequeue(skbs)) != NULL)
> > +		q->ops->requeue(skb, q);
> 
> 
> ->requeue queues at the head, so this looks like it would reverse
> the order of the skbs.

Excellent catch!  thanks; i will fix.

As a side note: Any batching driver should _never_ have to requeue; if
it does it is buggy. And the non-batching ones if they ever requeue will
be a single packet, so not much reordering.

Thanks again Patrick.

cheers,
jamal

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