linux-kernel - Re: [PATCH iwl-net 0/5] ice: LLDP support for VFs

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Date: Sat, 2 Mar 2024 07:47:56 +0100
From: Larysa Zaremba <larysa.zaremba@...el.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: Jiri Pirko <jiri@...nulli.us>, <intel-wired-lan@...ts.osuosl.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Mateusz Pacuszka
	<mateuszx.pacuszka@...el.com>, Tony Nguyen <anthony.l.nguyen@...el.com>,
	Lukasz Plachno <lukasz.plachno@...el.com>, Jakub Buchocki
	<jakubx.buchocki@...el.com>, Pawel Kaminski <pawel.kaminski@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>, Michal Swiatkowski
	<michal.swiatkowski@...ux.intel.com>, Mateusz Polchlopek
	<mateusz.polchlopek@...el.com>, "David S. Miller" <davem@...emloft.net>,
	"Eric Dumazet" <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, "Pawel
 Chmielewski" <pawel.chmielewski@...el.com>, Jesse Brandeburg
	<jesse.brandeburg@...el.com>
Subject: Re: [PATCH iwl-net 0/5] ice: LLDP support for VFs

On Tue, Mar 05, 2024 at 11:54:50AM -0800, Jakub Kicinski wrote:
> On Sat, 2 Mar 2024 01:50:03 +0100 Larysa Zaremba wrote:
> > For RX: match on Ethertype and mirror, every trusted VF should be able to scan 
> > neighbors.
> > 
> > For TX this is more complicated and is done not through eswitch, but through 
> > modifying security options, so do not think this would work with tc. So private 
> > flags are the best option? Our requirements say only a single VSI can transmit 
> > LLDP.
> 
> It is doable theoretically, tho, right? Driver can detect that all
> eswitch VF/PF ports but one have a "drop LLDP" rule and update the
> security option correctly?

I can envision that. I'll report in this thread, if I encounter roadblocks, when 
doing v2.

Thanks!