netdev - Re: [PATCH for net-next] if_ether.h: Clarify ethertype validity for gsw1xx dsa

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Message-ID: <aRc3U29wVvZEG0zv@makrotopia.org>
Date: Fri, 14 Nov 2025 14:06:11 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Peter Enderborg <peterend@...s.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH for net-next] if_ether.h: Clarify ethertype validity for
 gsw1xx dsa

On Fri, Nov 14, 2025 at 02:59:36PM +0100, Peter Enderborg wrote:
> This 0x88C3 is registered to Infineon Technologies Corporate Research ST
> and are used by MaxLinear. Infineon subsidiary Lantiq was acquired
> by Intel. MaxLinear bought IP's from Intel including this network chip.
> Ref https://standards-oui.ieee.org/ethertype/eth.txt
> 
> Signed-off-by: Peter Enderborg <peterend@...s.com>

Thank you!

Reviewed-by: Daniel Golle <daniel@...rotopia.org>

> ---
>  include/uapi/linux/if_ether.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
> index 2c93b7b731c8..df9d44a11540 100644
> --- 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 */
> -- 
> 2.34.1
>