netdev - Re: [PATCH v2 net-next 6/6] selftests: forwarding: add dynamic FDB test

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Message-ID: <87tty1nlb4.fsf@kapio-technology.com>
Date:   Fri, 31 Mar 2023 14:43:11 +0200
From:   Hans Schultz <netdev@...io-technology.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Ido Schimmel <idosch@...dia.com>, davem@...emloft.net,
        kuba@...nel.org, netdev@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        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>,
        "maintainer:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER" 
        <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>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Clément Léger <clement.leger@...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>,
        open list <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
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        <linux-mediatek@...ts.infradead.org>,
        "open list:RENESAS RZ/N1 A5PSW SWITCH DRIVER" 
        <linux-renesas-soc@...r.kernel.org>,
        "moderated list:ETHERNET BRIDGE" <bridge@...ts.linux-foundation.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH v2 net-next 6/6] selftests: forwarding: add dynamic FDB
 test

On Fri, Mar 31, 2023 at 12:37, Vladimir Oltean <olteanv@...il.com> wrote:
>
> So, by running the command I posted in the earlier email, you actually
> run it on the physical DSA user port interfaces, and it should pass
> there too.

Okay, that sounds like a good idea which I have not done before. I am
seeing how I can install Debian in an Qemu or VMWare setup to be able to
test that way.

> This is based on the equivalency principle between the
> software and the hardware data paths that I was talking about.
>
> If you're actively and repeatedly making an effort to work with your eyes
> closed, and then build strawmen around the fact that you don't see, then
> you're not going to get very friendly reactions from people, me included,
> who explain things to you that pertain to your due diligence. This is
> because these people know the things that they're explaining to you out
> of their own due diligence, and, as a result, are not easily fooled by
> your childish excuses.

I am not coming with excuses here, and certainly not childish ones at
that either. I am just pointing out that on my device the tests don't
run well because of memory shortage and my reasoning why I think it is
so.
I will as long as the system is as it is with these selftests, just run
single subtests at a time on target, but if I have new phy problems like
the one you have seen I have had before, then testing on target becomes
off limits.