netdev - Re: [PATCH v2 net-next 2/8] net: dsa: mv88e6xxx: Avoid useless attempts to fast-age LAGs

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Message-ID: <20210318143602.nxx2nprfgv5zawyf@skbuf>
Date:   Thu, 18 Mar 2021 16:36:02 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Tobias Waldekranz <tobias@...dekranz.com>
Cc:     davem@...emloft.net, kuba@...nel.org, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next 2/8] net: dsa: mv88e6xxx: Avoid useless
 attempts to fast-age LAGs

On Thu, Mar 18, 2021 at 03:15:44PM +0100, Tobias Waldekranz wrote:
> When a port is a part of a LAG, the ATU will create dynamic entries
> belonging to the LAG ID when learning is enabled. So trying to
> fast-age those out using the constituent port will have no
> effect. Unfortunately the hardware does not support move operations on
> LAGs so there is no obvious way to transform the request to target the
> LAG instead.
> 
> Instead we document this known limitation and at least avoid wasting
> any time on it.
> 
> Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
> ---

Reviewed-by: Vladimir Oltean <olteanv@...il.com>