netdev - Re: [PATCH v3 net-next 0/2] net: tc: dsa: Implement offload of matchall for bridged DSA ports

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Message-ID: <20220405180949.3dd204a1@kernel.org>
Date:   Tue, 5 Apr 2022 18:09:49 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Mattias Forsblad <mattias.forsblad@...il.com>
Cc:     netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Tobias Waldekranz <tobias@...dekranz.com>
Subject: Re: [PATCH v3 net-next 0/2] net: tc: dsa: Implement offload of
 matchall for bridged DSA ports

On Mon,  4 Apr 2022 12:48:24 +0200 Mattias Forsblad wrote:
> Limitations
> If there is tc rules on a bridge and all the ports leave the bridge
> and then joins the bridge again, the indirect framwork doesn't seem
> to reoffload them at join. The tc rules need to be torn down and
> re-added.

You should unregister your callback when last DSA port leaves and
re-register when first joins. That way you'll get replay.

Also the code needs to check the matchall is highest prio.