netdev - Re: VLAN filtering with DSA

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Message-ID: <20200910190119.n2mnqkv2toyqbmzn@skbuf>
Date:   Thu, 10 Sep 2020 22:01:19 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev <netdev@...r.kernel.org>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>
Subject: Re: VLAN filtering with DSA

On Thu, Sep 10, 2020 at 11:42:02AM -0700, Florian Fainelli wrote:
> On 9/10/2020 8:07 AM, Vladimir Oltean wrote:
> Yes, doing what you suggest would make perfect sense for a DSA master that
> is capable of VLAN filtering, I did encounter that problem with e1000 and
> the dsa-loop.c mockup driver while working on a mock-up 802.1Q data path.

Yes, I have another patch where I add those VLANs from tag_8021q.c which
I did not show here.

But if the DSA switch that uses tag_8021q is cascaded to another one,
that's of little use if the upper switch does not propagate that
configuration to its own upstream.

Thanks,
-Vladimir