if_ether.h: Clarify ethertype validity for gsw1xx dsa

This 0x88C3 is registered to Infineon Technologies Corporate Research ST
and are used by MaxLinear.
Infineon made a spin off called Lantiq.
Lantiq was acquired by Intel
MaxLinear acquired Intels Connected Home division.

The product FAQ from MaxLinear describes it's history from the F24S.
The driver for the gsw1xx is based on Lantiq showing it's similarities.

Ref https://standards-oui.ieee.org/ethertype/eth.txt

Signed-off-by: Peter Enderborg <Peter.Enderborg@axis.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
index 2c93b7b731c8fec9c6e6f76ef01356e017fb8802..df9d44a115403de85be38c6e858ea69d2eb7d162 100644 (file)
--- a/include/uapi/linux/if_ether.h
+++ b/include/uapi/linux/if_ether.h
@@ -92,7 +92,9 @@
 #define ETH_P_ETHERCAT 0x88A4          /* EtherCAT                     */
 #define ETH_P_8021AD   0x88A8          /* 802.1ad Service VLAN         */
 #define ETH_P_802_EX1  0x88B5          /* 802.1 Local Experimental 1.  */
-#define ETH_P_MXLGSW   0x88C3          /* MaxLinear GSW DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
+#define ETH_P_MXLGSW   0x88C3          /* Infineon Technologies Corporate Research ST
+                                        * Used by MaxLinear GSW DSA
+                                        */
 #define ETH_P_PREAUTH  0x88C7          /* 802.11 Preauthentication */
 #define ETH_P_TIPC     0x88CA          /* TIPC                         */
 #define ETH_P_LLDP     0x88CC          /* Link Layer Discovery Protocol */