linux-kernel - Re: [PATCH net-next v4 5/9] net: dsa: microchip: ksz9477: Add Wake on Magic Packet support

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Message-ID: <53bb1429-f73a-4acd-a99a-a4fd5d1e20e8@gmail.com>
Date:   Mon, 16 Oct 2023 08:38:59 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     kernel@...gutronix.de, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, UNGLinuxDriver@...rochip.com,
        "Russell King (Oracle)" <linux@...linux.org.uk>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v4 5/9] net: dsa: microchip: ksz9477: Add Wake on
 Magic Packet support



On 10/16/2023 7:12 AM, Oleksij Rempel wrote:
> Introduce Wake on Magic Packet (WoL) functionality to the ksz9477
> driver.
> 
> Major changes include:
> 
> 1. Extending the `ksz9477_handle_wake_reason` function to identify Magic
>     Packet wake events alongside existing wake reasons.
> 
> 2. Updating the `ksz9477_get_wol` and `ksz9477_set_wol` functions to
>     handle WAKE_MAGIC alongside the existing WAKE_PHY option, and to
>     program the switch's MAC address register accordingly when Magic
>     Packet wake-up is enabled. This change will prevent WAKE_MAGIC
>     activation if the related port has a different MAC address compared
>     to a MAC address already used by HSR or an already active WAKE_MAGIC
>     on another port.
> 
> 3. Adding a restriction in `ksz_port_set_mac_address` to prevent MAC
>     address changes on ports with active Wake on Magic Packet, as the
>     switch's MAC address register is utilized for this feature.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>

Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
-- 
Florian