Re: [PATCH v2 net-next 1/6] ether: add EtherType for proprietary Realtek protocols

From: Florian Fainelli
Date: Wed Oct 13 2021 - 22:17:23 EST




On 10/13/2021 7:50 AM, Alvin Šipraga wrote:
From: Alvin Šipraga <alsi@xxxxxxxxxxxxxxx>

Add a new EtherType ETH_P_REALTEK to the if_ether.h uapi header. The
EtherType 0x8899 is used in a number of different protocols from Realtek
Semiconductor Corp [1], so no general assumptions should be made when
trying to decode such packets. Observed protocols include:

0x1 - Realtek Remote Control protocol [2]
0x2 - Echo protocol [2]
0x3 - Loop detection protocol [2]
0x4 - RTL8365MB 4- and 8-byte switch CPU tag protocols [3]
0x9 - RTL8306 switch CPU tag protocol [4]
0xA - RTL8366RB switch CPU tag protocol [4]

[1] https://lore.kernel.org/netdev/CACRpkdYQthFgjwVzHyK3DeYUOdcYyWmdjDPG=Rf9B3VrJ12Rzg@xxxxxxxxxxxxxx/
[2] https://www.wireshark.org/lists/ethereal-dev/200409/msg00090.html
[3] https://lore.kernel.org/netdev/20210822193145.1312668-4-alvin@xxxxxxx/
[4] https://lore.kernel.org/netdev/20200708122537.1341307-2-linus.walleij@xxxxxxxxxx/

Suggested-by: Andrew Lunn <andrew@xxxxxxx>
Signed-off-by: Alvin Šipraga <alsi@xxxxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>

Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
--
Florian