netdev - Re: [PATCH net] net: dsa: mt7530: don't change PVC_EG

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Message-ID: <20230206203335.6uxfiylftyktut5u@skbuf>
Date:   Mon, 6 Feb 2023 22:33:35 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Frank Wunderlich <frank-w@...lic-files.de>,
        erkin.bozoglu@...ont.com, richard@...terhints.com
Subject: Re: [PATCH net] net: dsa: mt7530: don't change PVC_EG_TAG when CPU
 port becomes VLAN-aware

On Mon, Feb 06, 2023 at 10:41:47PM +0300, Arınç ÜNAL wrote:
> One last thing. Specific to MT7530 switch in MT7621 SoC, if port@5 is the
> only CPU port defined on the devicetree, frames sent from DSA master appears
> malformed on the user port. Packet capture on computer connected to the user
> port is attached.
> 
> The ARP frames on the pcapng file are received on the DSA master, I captured
> them with tcpdump, and put it in the attachments. Then I start pinging from
> the DSA master and the malformed frames appear on the pcapng file.
> 
> It'd be great if you could take a look this final issue.

What phy-mode does port@5 use when it doesn't work? What about the DSA master?