netdev - Re: [net-next PATCH 1/2] octeontx2-pf: Add devlink param to init and de-init serdes

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Message-ID: <20211027083808.27f39cb0@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 27 Oct 2021 08:38:08 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Subbaraya Sundeep <sbhatta@...vell.com>
Cc:     <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <hkelam@...vell.com>, <gakula@...vell.com>, <sgoutham@...vell.com>,
        <rsaladi2@...vell.com>, Vamsi Attunuru <vattunuru@...vell.com>
Subject: Re: [net-next PATCH 1/2] octeontx2-pf: Add devlink param to init
 and de-init serdes

On Wed, 27 Oct 2021 16:01:14 +0530 Subbaraya Sundeep wrote:
> From: Rakesh Babu <rsaladi2@...vell.com>
> 
> The physical/SerDes link of an netdev interface is not
> toggled on interface bring up and bring down. This is
> because the same link is shared between PFs and its VFs.
> This patch adds devlink param to toggle physical link so
> that it is useful in cases where a physical link needs to
> be re-initialized.

So it's a reset? Or are there cases where user wants the link 
to stay down?