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

[Rinitha, SX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@xxxxxxxxxx> On Behalf Of Birger Koblitz
> Sent: 16 October 2025 22:18
> To: Nguyen, Anthony L <anthony.l.nguyen@xxxxxxxxx>; Kitszel, Przemyslaw <przemyslaw.kitszel@xxxxxxxxx>; Andrew Lunn <andrew+netdev@xxxxxxx>; David S. Miller <davem@xxxxxxxxxxxxx>; Eric Dumazet <edumazet@xxxxxxxxxx>; Jakub Kicinski <kuba@xxxxxxxxxx>; Paolo Abeni <pabeni@xxxxxxxxxx>
> Cc: intel-wired-lan@xxxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Birger Koblitz <mail@xxxxxxxxxxxxxxxxx>; Andrew Lunn <andrew@xxxxxxx>; Paul Menzel <pmenzel@xxxxxxxxxxxxx>; Loktionov, Aleksandr <aleksandr.loktionov@xxxxxxxxx>
> 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@xxxxxxxxxxxxxxxxx>
> Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
> Reviewed-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
> ---
> Changes in v4:
>  Added "Reviewed-bys".
>  Slight rewording of commit message.
> - Link to v3: https://lore.kernel.org/r/20251014-10gbx-v3-1-50cda8627198@xxxxxxxxxxxxxxxxx
>
> 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@xxxxxxxxxxxxxxxxx
>
> 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@xxxxxxxxx> (A Contingent worker at Intel)