Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38;
Date:   Fri, 13 Oct 2023 15:32:49 +0300
From:   Vladimir Oltean <olteanv@gmail.com>
To:     Oleksij Rempel <o.rempel@pengutronix.de>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Andrew Lunn <andrew@lunn.ch>,
        Eric Dumazet <edumazet@google.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Woojung Huh <woojung.huh@microchip.com>,
        Arun Ramadoss <arun.ramadoss@microchip.com>,
        Conor Dooley <conor+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Rob Herring <robh+dt@kernel.org>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        UNGLinuxDriver@microchip.com,
        "Russell King (Oracle)" <linux@armlinux.org.uk>,
        devicetree@vger.kernel.org
Subject: Re: [PATCH net-next v3 2/7] net: dsa: microchip: Set unique MAC at
 startup for WoL support
Message-ID: <20231013123249.bhigwsezy6afb5qt@skbuf>
References: <20231013122405.3745475-1-o.rempel@pengutronix.de>
 <20231013122405.3745475-3-o.rempel@pengutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20231013122405.3745475-3-o.rempel@pengutronix.de>
Precedence: bulk

On Fri, Oct 13, 2023 at 02:24:00PM +0200, Oleksij Rempel wrote:
> Set a unique global MAC address for each switch on the network at system
> startup by syncing the switch's global MAC address with the Ethernet
> address of the DSA master interface. This is crucial for supporting
> Wake-on-LAN (WoL) functionality, as it requires a unique address for
> each switch.
> 
> Although the operation is performed only at system start and won't sync
> if the master Ethernet address changes dynamically, it lays the
> groundwork for WoL support by ensuring a unique MAC address for each
> switch.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---

Why not take the MAC address of the user port at ksz9477_set_wol() time,
and use the existing ksz_switch_macaddr_get() API that was just added so
that this use case could work?