netdev - Re: [PATCH net-next v4 11/11] net: dsa: realtek: rtl8365mb: multiple cpu ports, non cpu extint

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Message-ID: <2091fa77-5578-c1bb-8457-3be4029b014d@gmail.com>
Date:   Thu, 20 Jan 2022 19:50:08 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Luiz Angelo Daros de Luca <luizluca@...il.com>
Cc:     Vladimir Oltean <olteanv@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Alvin Šipraga <ALSI@...g-olufsen.dk>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "vivien.didelot@...il.com" <vivien.didelot@...il.com>,
        "arinc.unal@...nc9.com" <arinc.unal@...nc9.com>
Subject: Re: [PATCH net-next v4 11/11] net: dsa: realtek: rtl8365mb: multiple
 cpu ports, non cpu extint



On 1/20/2022 7:42 PM, Luiz Angelo Daros de Luca wrote:
>> Are we talking about an in tree driver? If so which is it?
> 
> Yes, the one the patch touches: rtl8365mb.

I meant the DSA master network device, but you answered that, it uses a 
mt7260a SoC, but there is no Ethernet driver upstream for it yet?

git grep ralink,mt7620-gsw *
Documentation/devicetree/bindings/net/mediatek,mt7620-gsw.txt: 
compatible = "ralink,mt7620-gsw";

> 
> My device uses a mt7620a SoC and traffic passes through its mt7530
> switch with vlan disabled before reaching the realtek switch. It still
> loads a swconfig driver but I think it might work without one.

Ah so you have a cascade of switches here, that could confuse your 
Ethernet MAC. Do you have a knob to adjust where to calculate the 
checksum from, say a L2 or L3 offset for instance?
-- 
Florian