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

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Message-ID: <4739D3A5.4020503@intel.com>
Date:	Tue, 13 Nov 2007 08:41:09 -0800
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Patrick McHardy <kaber@...sh.net>
CC:	Herbert Xu <herbert@...dor.apana.org.au>,
	David Miller <davem@...emloft.net>, joonwpark81@...il.com,
	w@....eu, cfriesen@...tel.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 wrote:
> Herbert Xu wrote:
>> On Tue, Nov 13, 2007 at 04:06:24AM -0800, David Miller wrote:
>>>> In other words we can make it so that nobody is in promiscuous
>>>> mode and therefore have to disable VLAN acceleration *unless*
>>>> they really want to be in that state.  In which case it would
>>>> imply that they wish to see everything and therefore we should
>>>> disable VLAN acceleration.
>>> This is too complicated, we have multiple unicast MAC support
>>> in the driver API already, let's simply use it.
>>
>> Yes I agree.  People not using Patrick's new API deserves to
>> get poor performance so they can switch over sooner :)
>>
>> What I was trying to say above is that e1000 currently uses
>> the old set_multicast_list interface (rather than dev_set_rx_mode)
>> so it's not immediately obvious why we're in promiscuous mode.
>> We could look at dev->promiscuity - !!uc_count but that feels a
>> bit fragile.
>>
>> Perhaps those who want to push this patch should be encouraged
>> to convert e1000 to the new interface :)
> 
> 
> I already posted a patch for this, not sure what happened to it.
> Auke, any news on merging the secondary unicast address support?

I dropped the ball on that one. Care to resend it and send me one for e1000e as well?

Auke
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