linux-kernel - Re: [PATCH 2/2] [e1000 VLAN] Disable vlan hw accel when promiscuous mode

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Date:	Tue, 13 Nov 2007 19:09:23 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	kaber@...sh.net (Patrick McHardy)
Cc:	joonwpark81@...il.com, davem@...emloft.net, w@....eu,
	cfriesen@...tel.com, auke-jan.h.kok@...el.com,
	netdev@...r.kernel.org,
	djohnson+linux-kernel@...starentnetworks.com,
	linux-kernel@...r.kernel.org, e1000-devel@...ts.sourceforge.net
Subject: Re: [PATCH 2/2] [e1000 VLAN] Disable vlan hw accel when promiscuous mode

Patrick McHardy <kaber@...sh.net> wrote:
>
> I still think promiscous mode should disable all filters (which would
> also provide a consistent view between accerlated and non-accerlated
> devices), but an ethtool option is better than nothing :)

I agree.  People doing a tcpdump don't have to turn on promiscuous
mode, that's what the -p option is for.  In other words, having
promiscuous mode disable VLAN filtering does not take away the
user's options at all.

In fact, the very definition of promiscuous is to turn off hardware
filtering, albeit the filtering of MAC addresses rather than VLAN
tags.  So it would seem logical to have it turn off VLAN filtering
too.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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