On 10/13/2021 7:50 AM, Alvin Šipraga wrote:
From: Alvin Šipraga <alsi@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> -- Florian
