netdev - Re: [PATCH net-next 4/8] net/funeth: ethtool operations

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Message-ID: <20211230124316.0a6f5fe6@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Thu, 30 Dec 2021 12:43:16 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Dimitris Michailidis <d.michailidis@...gible.com>
Cc:     Andrew Lunn <andrew@...n.ch>, davem@...emloft.net,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next 4/8] net/funeth: ethtool operations

On Thu, 30 Dec 2021 12:30:34 -0800 Dimitris Michailidis wrote:
> On Thu, Dec 30, 2021 at 12:22 PM Jakub Kicinski <kuba@...nel.org> wrote:
> > On Thu, 30 Dec 2021 19:04:08 +0100 Andrew Lunn wrote:
> > > > +static void fun_get_drvinfo(struct net_device *netdev,
> > > > +                       struct ethtool_drvinfo *info)
> > > > +{
> > > > +   const struct funeth_priv *fp = netdev_priv(netdev);
> > > > +
> > > > +   strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
> > > > +   strcpy(info->fw_version, "N/A");
> > >
> > > Don't set it, if you have nothing useful to put in it.
> >
> > Also, if user has no way of reading the firmware version how do they
> > know when to update the FW in the flash? FW flashing seems pointless
> > without knowing the current FW version.  
> 
> It will be available, but FW hasn't settled on the API for it yet.
> There are several FW images on the devices, one will be reported here but
> will rely on devlink for the full set.

Can we defer the FW flashing to that point as well, then?
It's always a bit risky to add support for subset of functionality
upstream given the strict backward compat requirements.