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Date:      Wed, 13 Sep 2006 07:37:42 +0200
From:      Ian FREISLICH <if@hetzner.co.za>
To:        "Jack Vogel" <jfvogel@gmail.com>
Cc:        Andre Oppermann <andre@freebsd.org>, current@freebsd.org, Mike Tancsa <mike@sentex.net>
Subject:   Re: TSO, SMP and the em driver. 
Message-ID:  <E1GNNRO-000BKY-S1@hetzner.co.za>
In-Reply-To: Message from "Jack Vogel" <jfvogel@gmail.com> of "Tue, 12 Sep 2006 17:59:24 MST." <2a41acea0609121759l4684b047r350fb0763d0ccc84@mail.gmail.com> 

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"Jack Vogel" wrote:
> On 9/12/06, Andre Oppermann <andre@freebsd.org> wrote:
> > Mike Tancsa wrote:
> > > At 12:43 PM 9/12/2006, Andre Oppermann wrote:
> > >
> > >> TSO != (vlan && promisc)
> > >
> > > Sorry, the commonality I was referring to was VLAN hardware tagging and
> > > how it must be enabled for TSO, but that breaks other things.  See a few
> > > messages ago
> > > http://lists.freebsd.org/pipermail/freebsd-current/2006-September/065818.html
> >
> > I'm sure we can find a workaround for that.
> 
> Not sure what you are referring to Andre, working around which part?

EM + CARP + VLAN + TSO is an unworkable combination since VLANHWTAG
gets broken by PROMISC required by CARP.  TSO requires VLANHWTAG.
Is the VLANHWTAG + PROMISC problem a driver or hardware problem?

Ian

--
Ian Freislich



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