netdev - Re: [PATCH 5/9] net: ethernet: mtk_eth_soc: fix RX data corruption issue

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Message-ID: <Y90VsYieanKFNqO3@lunn.ch>
Date:   Fri, 3 Feb 2023 15:09:53 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Daniel Golle <daniel@...rotopia.org>
Cc:     netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Russell King <linux@...linux.org.uk>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        John Crispin <john@...ozen.org>, Felix Fietkau <nbd@....name>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        DENG Qingfang <dqfext@...il.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jianhui Zhao <zhaojh329@...il.com>,
        Bjørn Mork <bjorn@...k.no>
Subject: Re: [PATCH 5/9] net: ethernet: mtk_eth_soc: fix RX data corruption
 issue

On Fri, Feb 03, 2023 at 07:02:28AM +0000, Daniel Golle wrote:
> Also set bit 12 when setting up MAC MCR, as MediaTek SDK did the same
> change stating:
> "If without this patch, kernel might receive invalid packets that are
> corrupted by GMAC."[1]

Do you have any idea what this bit means? It would be nice to have a
more meaningful description.

     Andrew