netdev - Re: [net-next PATCH 0/6] Add support for 25G, 50G, and 100G to fbnic

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Message-ID: <20250612094234.GA436744@unreal>
Date: Thu, 12 Jun 2025 12:42:34 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Alexander Duyck <alexander.duyck@...il.com>
Cc: netdev@...r.kernel.org, linux@...linux.org.uk, hkallweit1@...il.com,
	andrew@...n.ch, davem@...emloft.net, pabeni@...hat.com,
	kuba@...nel.org, Jiri Pirko <jiri@...dia.com>
Subject: Re: [net-next PATCH 0/6] Add support for 25G, 50G, and 100G to fbnic

On Tue, Jun 10, 2025 at 07:51:08AM -0700, Alexander Duyck wrote:
> The fbnic driver up till now had avoided actually reporting link as the
> phylink setup only supported up to 40G configurations. This changeset is
> meant to start addressing that by adding support for 50G and 100G interface
> types as well as the 200GBASE-CR4 media type which we can run them over.
> 
> With that basic support added fbnic can then set those types based on the
> EEPROM configuration provided by the firmware and then report those speeds
> out using the information provided via the phylink call for getting the
> link ksettings. This provides the basic MAC support and enables supporting
> the speeds as well as configuring flow control.
> 
> After this I plan to add support for a PHY that will represent the SerDes
> PHY being used to manage the link as we need a way to indicate link
> training into phylink to prevent link flaps on the PCS while the SerDes is
> in training, and then after that I will look at rolling support for our
> PCS/PMA into the XPCS driver.

<...>

> Alexander Duyck (6):
>       net: phy: Add interface types for 50G and 100G

<...>

>  drivers/net/phy/phy-core.c                    |   3 +
>  drivers/net/phy/phy_caps.c                    |   9 ++
>  drivers/net/phy/phylink.c                     |  13 ++
>  drivers/net/phy/sfp-bus.c                     |  22 +++
>  include/linux/phy.h                           |  12 ++
>  include/linux/sfp.h                           |   1 +
>  14 files changed, 257 insertions(+), 88 deletions(-)

when the fbnic was proposed for merge, the overall agreement was that
this driver is ok as long as no-core changes will be required for this
driver to work and now, year later, such changes are proposed here.

https://lore.kernel.org/netdev/ZhZC1kKMCKRvgIhd@nanopsycho/

Thanks

> 
> --
> 
>