netdev - Re: incoming interface + ifb0

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Date:	Tue, 29 Jul 2008 12:48:23 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Denys Fedoryshchenko <denys@...p.net.lb>
Cc:	netdev@...r.kernel.org
Subject: Re: incoming interface + ifb0

On 29-07-2008 12:22, Denys Fedoryshchenko wrote:
> Sorry that i am asking in kernel maillist, probably it is wrong. Maybe right place is lartc only, but probably kernel lacking something too :-)
> 
> Question is:
> I have plenty pppX interfaces. I want to shape traffic coming over this interfaces.
> Before i was doing over m_ipt and MARK, then redirect to ifb0 and there was doing filter by fwmark.
> But m_ipt seems needs serious rewrite, and plus it is not very clean way to do (performance wise).
> 
> Alternative way is to shape on outgoing interface, but it is not clean, in case if there is multiple outgoing interfaces. 
> I tried to filter on ifb by ematch - rt_iif, dev - no luck. by route fromif - no luck. Is there some way i miss?

I didn't use this nor checked enough, so I can be wrong, but
since ingress with ifb0 is in prerouting, you probably can't use
rt_iif. You shouldn't filter at ifb on "dev" neither - it's "ifb"
at the moment. You need to match skb->iif with something (flow?).

Jarek P.
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