linux-kernel - RE: [Intel-wired-lan] [PATCH net-next v4] ixgbe: Add 10G-BX support

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Message-ID: <IA1PR11MB6241D933EBBFA8611AD554378BCEA@IA1PR11MB6241.namprd11.prod.outlook.com>
Date: Mon, 10 Nov 2025 13:36:38 +0000
From: "Rinitha, SX" <sx.rinitha@...el.com>
To: Birger Koblitz <mail@...ger-koblitz.de>, "Nguyen, Anthony L"
	<anthony.l.nguyen@...el.com>, "Kitszel, Przemyslaw"
	<przemyslaw.kitszel@...el.com>, 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>
CC: "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Andrew Lunn
	<andrew@...n.ch>, Paul Menzel <pmenzel@...gen.mpg.de>, "Loktionov, Aleksandr"
	<aleksandr.loktionov@...el.com>
Subject: RE: [Intel-wired-lan] [PATCH net-next v4] ixgbe: Add 10G-BX support

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of Birger Koblitz
> Sent: 16 October 2025 22:18
> To: Nguyen, Anthony L <anthony.l.nguyen@...el.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@...el.com>; 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>
> Cc: intel-wired-lan@...ts.osuosl.org; netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Birger Koblitz <mail@...ger-koblitz.de>; Andrew Lunn <andrew@...n.ch>; Paul Menzel <pmenzel@...gen.mpg.de>; Loktionov, Aleksandr <aleksandr.loktionov@...el.com>
> Subject: [Intel-wired-lan] [PATCH net-next v4] ixgbe: Add 10G-BX support
>
> Add support for 10G-BX modules, i.e. 10GBit Ethernet over a single strand Single-Mode fiber.
> The initialization of a 10G-BX SFP+ is the same as for a 10G SX/LX module, and is identified according to SFF-8472 table 5-3, footnote 3 by the 10G Ethernet Compliance Codes field being empty, the Nominal Bit Rate being compatible with 12.5GBit, and the module being a fiber module with a Single Mode fiber link length.
>
> This was tested using a Lightron WSPXG-HS3LC-IEA 1270/1330nm 10km
> transceiver:
> $ sudo ethtool -m enp1s0f1
>   Identifier                          : 0x03 (SFP)
>   Extended identifier                 : 0x04 (GBIC/SFP defined by 2-wire interface ID)
>   Connector                           : 0x07 (LC)
>   Transceiver codes                   : 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
>   Encoding                            : 0x01 (8B/10B)
>   BR Nominal                          : 10300MBd
>   Rate identifier                     : 0x00 (unspecified)
>   Length (SMF)                        : 10km
>   Length (OM2)                        : 0m
>   Length (OM1)                        : 0m
>   Length (Copper or Active cable)     : 0m
>   Length (OM3)                        : 0m
>   Laser wavelength                    : 1330nm
>   Vendor name                         : Lightron Inc.
>   Vendor OUI                          : 00:13:c5
>   Vendor PN                           : WSPXG-HS3LC-IEA
>   Vendor rev                          : 0000
>   Option values                       : 0x00 0x1a
>   Option                              : TX_DISABLE implemented
>   BR margin max                       : 0%
>   BR margin min                       : 0%
>   Vendor SN                           : S142228617
>   Date code                           : 140611
>   Optical diagnostics support         : Yes

> Signed-off-by: Birger Koblitz <mail@...ger-koblitz.de>
> Reviewed-by: Andrew Lunn <andrew@...n.ch>
> Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
> ---
> Changes in v4:
>  Added "Reviewed-bys".
>  Slight rewording of commit message.
> - Link to v3: https://lore.kernel.org/r/20251014-10gbx-v3-1-50cda8627198@birger-koblitz.de
>
> Changes in v3:
>  Added "Reviewed-by". There also was a possible mailserver DKIM misconfiguration
>  that may have prevented recipients to recieve the previous mails
> - Link to v2: https://lore.kernel.org/r/20251014-10gbx-v2-1-980c524111e7@birger-koblitz.de
>
> Changes in v2:
>  Allow also modules with only Byte 15 (100m SM link length) set to
>  be identified as BX
> ---
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c   |  7 ++++
> drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c |  2 ++
> drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c     | 43 +++++++++++++++++++++---
> drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h     |  2 ++
> drivers/net/ethernet/intel/ixgbe/ixgbe_type.h    |  2 ++
> 5 files changed, 51 insertions(+), 5 deletions(-)

Tested-by: Rinitha S <sx.rinitha@...el.com> (A Contingent worker at Intel)