linux-kernel - Re: [PATCH v5 net-next 6/6] selftests: forwarding: add test of MAC-Auth Bypass to locked port tests

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Date:   Mon, 29 Aug 2022 18:13:14 +0200
From:   netdev@...io-technology.com
To:     Ido Schimmel <idosch@...dia.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Ivan Vecera <ivecera@...hat.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        Shuah Khan <shuah@...nel.org>,
        Christian Marangi <ansuelsmth@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Yuwei Wang <wangyuweihx@...il.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        bridge@...ts.linux-foundation.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v5 net-next 6/6] selftests: forwarding: add test of
 MAC-Auth Bypass to locked port tests

On 2022-08-29 18:03, Ido Schimmel wrote:
> On Mon, Aug 29, 2022 at 05:08:23PM +0200, netdev@...io-technology.com 
> wrote:
>> On 2022-08-29 16:37, Ido Schimmel wrote:
>> > On Mon, Aug 29, 2022 at 02:04:42PM +0200, netdev@...io-technology.com
>> > wrote:
>> > > On 2022-08-29 13:32, Ido Schimmel wrote:
>> > > Port association is needed for MAB to work at all on mv88e6xxx, but
>> > > for
>> > > 802.1X port association is only needed for dynamic ATU entries.
>> >
>> > Ageing of dynamic entries in the bridge requires learning to be on as
>> > well, but in these test cases you are only using static entries and
>> > there is no reason to enable learning in the bridge for that. I prefer
>> > not to leak this mv88e6xxx implementation detail to user space and
>> > instead have the driver enable port association based on whether
>> > "learning" or "mab" is on.
>> >
>> 
>> Then it makes most sense to have the mv88e6xxx driver enable port
>> association when then port is locked, as it does now.
> 
> As you wish, but like you wrote "802.1X port association is only needed
> for dynamic ATU entries" and in this case user space needs to enable
> learning (for refresh only) so you can really key off learning on
> "learning || mab". User space can decide to lock the port and work with
> static entries and then learning is not required.

I will of course remove all "learning on" in the selftests, which is 
what I think you are referring to. In the previous I am referring to the 
code in the driver itself which I understand shall turn on port 
association with locked ports, e.g. no need for "learning on" when using 
the feature in general outside selftests...