netdev - Re: [PATCH] net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0

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Message-ID: <6dd8f8d5-9453-ab94-3aae-18eb5e35b051@cogentembedded.com>
Date:   Fri, 31 May 2019 18:02:18 +0300
From:   Nikita Yushchenko <nikita.yoush@...entembedded.com>
To:     Vivien Didelot <vivien.didelot@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Marek Behún <marek.behun@....cz>,
        Russell King <rmk+kernel@...linux.org.uk>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Healy <cphealy@...il.com>
Subject: Re: [PATCH] net: dsa: mv88e6xxx: avoid error message on remove from
 VLAN 0

>> Kernel currently does, but it is caught in
>> mv88e6xxx_port_check_hw_vlan() and returns -ENOTSUPP from there.
> 
> But VID 0 has a special meaning for the kernel, it means the port's private
> database (when it is isolated, non-bridged), it is not meant to be programmed
> in the switch. That's why I would've put that knowledge into the DSA layer,
> which job is to translate the kernel operations to the (dumb) DSA drivers.
> 
> I hope I'm seeing things correctly here.

I'm ok with either solution.