From: Alvin Šipraga Date: Mon, 18 Oct 2021 09:37:56 +0000 (+0200) Subject: ether: add EtherType for proprietary Realtek protocols X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7bbbbfaa7a1b0b03890f25fba5f28bb8c7ef145a;p=linux.git ether: add EtherType for proprietary Realtek protocols 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@mail.gmail.com/ [2] https://www.wireshark.org/lists/ethereal-dev/200409/msg00090.html [3] https://lore.kernel.org/netdev/20210822193145.1312668-4-alvin@pqrs.dk/ [4] https://lore.kernel.org/netdev/20200708122537.1341307-2-linus.walleij@linaro.org/ Suggested-by: Andrew Lunn Signed-off-by: Alvin Šipraga Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h index 5f589c7a83824..5da4ee234e0b7 100644 --- a/include/uapi/linux/if_ether.h +++ b/include/uapi/linux/if_ether.h @@ -86,6 +86,7 @@ * over Ethernet */ #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ +#define ETH_P_REALTEK 0x8899 /* Multiple proprietary protocols */ #define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ #define ETH_P_8021AD 0x88A8 /* 802.1ad Service VLAN */ #define ETH_P_802_EX1 0x88B5 /* 802.1 Local Experimental 1. */