netdev - RE: [net-next-2.6 PATCH 0/8 RFC v2] macvlan: MAC Address filtering support for passthru mode

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Date:	Thu, 17 Nov 2011 23:43:41 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>,
	"Rose, Gregory V" <gregory.v.rose@...el.com>
CC:	Roopa Prabhu <roprabhu@...co.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"sri@...ibm.com" <sri@...ibm.com>,
	"dragos.tatulea@...il.com" <dragos.tatulea@...il.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"mchan@...adcom.com" <mchan@...adcom.com>,
	"dwang2@...co.com" <dwang2@...co.com>,
	"shemminger@...tta.com" <shemminger@...tta.com>,
	"eric.dumazet@...il.com" <eric.dumazet@...il.com>,
	"kaber@...sh.net" <kaber@...sh.net>,
	"benve@...co.com" <benve@...co.com>
Subject: RE: [net-next-2.6 PATCH 0/8 RFC v2] macvlan: MAC Address filtering
 support for passthru mode

On Tue, 2011-10-25 at 08:59 -0700, Rose, Gregory V wrote:
> > -----Original Message-----
> > From: Michael S. Tsirkin [mailto:mst@...hat.com]
> > Sent: Tuesday, October 25, 2011 8:46 AM
> > To: Roopa Prabhu
> > Cc: netdev@...r.kernel.org; sri@...ibm.com; dragos.tatulea@...il.com;
> > arnd@...db.de; kvm@...r.kernel.org; davem@...emloft.net;
> > mchan@...adcom.com; dwang2@...co.com; shemminger@...tta.com;
> > eric.dumazet@...il.com; kaber@...sh.net; benve@...co.com; Rose, Gregory V
> > Subject: Re: [net-next-2.6 PATCH 0/8 RFC v2] macvlan: MAC Address
> > filtering support for passthru mode
> > 
> > On Mon, Oct 24, 2011 at 11:15:05AM -0700, Roopa Prabhu wrote:
> > > >> ... And also I dont know of any hw
> > > >> that provides an interface to set hw filters on a per queue basis.
> > > >
> > > > VMDq hardware would support this, no?
> > > >
> > > Am not really sure. This patch uses netdev to pass filters to hw. And I
> > > don't see any netdev infrastructure that would support per queue
> > filters.
> > 
> > Sure. I was only saying that as far as I understand,
> > VMDq hardware does support this functionality.
> > Right, Greg?
> 
> In the case of Intel HW yes.  I'll refrain from speaking for other HW
> vendors although I'm guessing it would be true in their cases also.
> YMMV, caveat emptor, etc. etc.

Current Solarflare hardware supports:
- RX MAC address filters for queue selection (steering), which can be
  combined with RSS (flow hashing)
- TX MAC address filters to prevent spoofing
Multiple filters can be associated with a single queue.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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