netdev - Re: [PATCH net-next 1/3] net: Add support to configure SR-IOV VF minimum and maximum queues.

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Message-ID: <CAJpBn1xTCsu9upLJP1e6d0vOwKfR=XygJQb_XwPX93ynF9-ppQ@mail.gmail.com>
Date:   Tue, 29 May 2018 22:56:29 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Michael Chan <michael.chan@...adcom.com>,
        "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
Cc:     David Miller <davem@...emloft.net>,
        Netdev <netdev@...r.kernel.org>,
        Or Gerlitz <gerlitz.or@...il.com>
Subject: Re: [PATCH net-next 1/3] net: Add support to configure SR-IOV VF
 minimum and maximum queues.

On Tue, 29 May 2018 20:19:54 -0700, Michael Chan wrote:
> On Tue, May 29, 2018 at 1:46 PM, Samudrala, Sridhar wrote:
> > Isn't ndo_set_vf_xxx() considered a legacy interface and not planned to be
> > extended?

+1 it's painful to see this feature being added to the legacy
API :(  Another duplicated configuration knob.

> I didn't know about that.
>
> > Shouldn't we enable this via ethtool on the port representor netdev?
>
> We discussed about this.  ethtool on the VF representor will only work
> in switchdev mode and also will not support min/max values.

Ethtool channel API may be overdue a rewrite in devlink anyway, but I
feel like implementing switchdev mode and rewriting features in devlink
may be too much to ask.