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Date: Wed, 13 Oct 2021 19:19:28 -0700 From: Florian Fainelli <f.fainelli@...il.com> To: Alvin Šipraga <alvin@...s.dk>, Linus Walleij <linus.walleij@...aro.org>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Vladimir Oltean <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Rob Herring <robh+dt@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk> Cc: Alvin Šipraga <alsi@...g-olufsen.dk>, netdev@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2 net-next 4/6] net: dsa: tag_rtl8_4: add realtek 8 byte protocol 4 tag On 10/13/2021 7:50 AM, Alvin Šipraga wrote: > From: Alvin Šipraga <alsi@...g-olufsen.dk> > > This commit implements a basic version of the 8 byte tag protocol used > in the Realtek RTL8365MB-VC unmanaged switch, which carries with it a > protocol version of 0x04. > > The implementation itself only handles the parsing of the EtherType > value and Realtek protocol version, together with the source or > destination port fields. The rest is left unimplemented for now. > > The tag format is described in a confidential document provided to my > company by Realtek Semiconductor Corp. Permission has been granted by > the vendor to publish this driver based on that material, together with > an extract from the document describing the tag format and its fields. > It is hoped that this will help future implementors who do not have > access to the material but who wish to extend the functionality of > drivers for chips which use this protocol. > > In addition, two possible values of the REASON field are specified, > based on experiments on my end. Realtek does not specify what value this > field can take. > > Signed-off-by: Alvin Šipraga <alsi@...g-olufsen.dk> > Reviewed-by: Vladimir Oltean <olteanv@...il.com> > Reviewed-by: Linus Walleij <linus.walleij@...aro.org> Reviewed-by: Florian Fainelli <f.fainelli@...il.com> -- Florian
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