From: Jakub Kicinski <kuba@kernel.org>
To: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Andrew Lunn <andrew@lunn.ch>,
mkubecek@suse.cz, danieller@nvidia.com, idosch@nvidia.com,
netdev@vger.kernel.org, vladyslavt@nvidia.com
Subject: Re: [PATCH ethtool-next] sff-8636: report LOL / LOS / Tx Fault
Date: Fri, 9 Jun 2023 09:36:07 -0700 [thread overview]
Message-ID: <20230609093607.72a8e3f2@kernel.org> (raw)
In-Reply-To: <ZINQ02Qrh/X+/Evy@shell.armlinux.org.uk>
On Fri, 9 Jun 2023 17:18:27 +0100 Russell King (Oracle) wrote:
> My mental stumbling block is that quad interfaces seem to act as either
> four separate network interfaces, or I think the lanes can be combined
> to double or quadruple the data bandwidth. How this looks from the
> firmware description perspective (in either DT or elsewhere) I don't
> know. Can they be dynamically changed too?
Last question I think I can answer at least from the uAPI perspective -
yes, via the devlink port split API. There's also an ethtool API for
configuring how many lanes are used within a single MAC (e.g. 2x25G vs
1x50G).
next prev parent reply other threads:[~2023-06-09 16:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-09 0:44 [PATCH ethtool-next] sff-8636: report LOL / LOS / Tx Fault Jakub Kicinski
2023-06-09 15:31 ` Andrew Lunn
2023-06-09 16:18 ` Russell King (Oracle)
2023-06-09 16:36 ` Jakub Kicinski [this message]
2023-06-11 7:39 ` Ido Schimmel
2023-06-12 15:48 ` Jakub Kicinski
2023-06-12 18:37 ` Ido Schimmel
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