From: Sunil Kovvuri <sunil.kovvuri@gmail.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Linux Netdev List <netdev@vger.kernel.org>,
Andrew Lunn <andrew@lunn.ch>,
Sunil Goutham <sgoutham@marvell.com>
Subject: Re: How to toggle physical link via ethtool
Date: Fri, 23 Apr 2021 23:57:45 +0530 [thread overview]
Message-ID: <CA+sq2Cfo4cWGO9buf7uKJrn1SuZF9USFTc4VeQUpus=0cGmUNA@mail.gmail.com> (raw)
In-Reply-To: <20210421103012.45a3a64a@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
On Wed, Apr 21, 2021 at 11:00 PM Jakub Kicinski <kuba@kernel.org> wrote:
>
> On Wed, 21 Apr 2021 18:12:16 +0530 Sunil Kovvuri wrote:
> > Hi,
> >
> > Have a query on how to bring down physical link (serdes) for a NIC interface.
> >
> > I am under assumption that for a SR-IOV NIC, when user executes
> > "ifconfig eth-pf down",
> > it should not bring down physical link as there could be virtual
> > interfaces still active.
> > Let me know if this assumption itself is wrong.
>
> How VFs operate is really implementation specific, so it'd be
> interesting to hear from the vendors but IIUC bringing PF down
> should shut down the link.
>
> What usually keeps the link up is stuff like NC-SI, but not VFs.
>
Okay.
Thanks,
Sunil.
prev parent reply other threads:[~2021-04-23 18:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 12:42 How to toggle physical link via ethtool Sunil Kovvuri
2021-04-21 17:30 ` Jakub Kicinski
2021-04-23 18:27 ` Sunil Kovvuri [this message]
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