netdev - Re: [PATCH] net_sched: long word align struct qdisc_skb

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Date:	Wed, 23 Feb 2011 14:17:23 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...tta.com
Cc:	eric.dumazet@...il.com, kaber@...sh.net,
	Juliusz.Chroboczek@....jussieu.fr, linville@...driver.com,
	netdev@...r.kernel.org, andi@...stfloor.org
Subject: Re: [PATCH] net_sched: long word align struct qdisc_skb_cb data

From: Stephen Hemminger <shemminger@...tta.com>
Date: Wed, 23 Feb 2011 09:30:01 -0800

> On Wed, 23 Feb 2011 18:05:07 +0100
> Eric Dumazet <eric.dumazet@...il.com> wrote:
> 
>> Le mercredi 23 février 2011 à 17:24 +0100, Patrick McHardy a écrit :
>> > Am 23.02.2011 16:14, schrieb Eric Dumazet:
>> > > diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
>> > > index 16626a0..f40d32e 100644
>> > > --- a/include/net/sch_generic.h
>> > > +++ b/include/net/sch_generic.h
>> > > @@ -218,6 +218,7 @@ struct tcf_proto {
>> > >  
>> > >  struct qdisc_skb_cb {
>> > >  	unsigned int		pkt_len;
>> > > +	unsigned int		sfb_classid;
>> > >  	char			data[];
>> > >  };
>> > 
>> > This could be moved into a SFB specific cb, similar to what netem
>> > does.
>> 
>> Hmm... well... I want to be sure no other sch will destroy my values.
>> 
>> netem seems buggy then.
>> 
>> Probably following patch is needed ?
> 
> Yes, it was long word aligned when netem was written but
> we seem to have bit creep.

Applied to net-2.6, thanks!
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