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Date:   Tue, 20 Jun 2023 13:22:57 +0200
From:   Christian Marangi <ansuelsmth@gmail.com>
To:     Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [net-next PATCH] net: dsa: qca8k: add support for
 port_change_master
References: <20230620063747.19175-1-ansuelsmth@gmail.com>
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On Tue, Jun 20, 2023 at 08:37:47AM +0200, Christian Marangi wrote:
> Add support for port_change_master to permit assigning an alternative
> CPU port if the switch have both CPU port connected or create a LAG on
> both CPU port and assign the LAG as DSA master.
> 
> On port change master request, we check if the master is a LAG.
> With LAG we compose the cpu_port_mask with the CPU port in the LAG, if
> master is a simple dsa_port, we derive the index.
> 
> Finally we apply the new cpu_port_mask to the LOOKUP MEMBER to permit
> the port to receive packet by the new CPU port setup for the port and
> we reenable the target port previously disabled.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
> ---
>  drivers/net/dsa/qca/qca8k-8xxx.c | 54 ++++++++++++++++++++++++++++++++
>  drivers/net/dsa/qca/qca8k.h      |  1 +
>  2 files changed, 55 insertions(+)
>

Please ignore I notice some problem and I have to test this further.