netdev - Re: Potential u32 classifier bug.

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Message-ID: <20070815181139.GD32236@postel.suug.ch>
Date:	Wed, 15 Aug 2007 20:11:39 +0200
From:	Thomas Graf <tgraf@...g.ch>
To:	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>
Cc:	netdev@...r.kernel.org
Subject: Re: Potential u32 classifier bug.

* Waskiewicz Jr, Peter P <peter.p.waskiewicz.jr@...el.com> 2007-08-15 11:02
> > There is this very horrible way of using the u32 classifier 
> > with a negative offset to look into the ethernet header.
> 
> Based on this, it sounds like u32 using protocol 802_3 is broken?

You might be expecting too much from u32. The protocol given
to u32 is just a filter, it doesn't imply anything beyond that.
u32 has its usage the way it is, that's way we've added an ematch
rather than extending u32 itself.
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