netdev - Re: Use of 'SIOCDEVPRIVATE' in ethernet drivers.

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Message-ID: <20140107154456.7e5af377@nehalam.linuxnetplumber.net>
Date:	Tue, 7 Jan 2014 15:44:56 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Giri Reddy <giri.reddy@...gic.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: Use of 'SIOCDEVPRIVATE' in ethernet drivers.

On Tue, 7 Jan 2014 22:22:45 +0000
Giri Reddy <giri.reddy@...gic.com> wrote:

> On 1/7/14 11:05 AM, David Miller wrote:
> > From: Giri Reddy <giri.reddy@...gic.com>
> > Date: Tue, 7 Jan 2014 18:21:17 +0000
> >
> >> Are we still allowed to use 'SIOCDEVPRIVATE' in drivers if there the
> >> deprecation efforts are on hold.
> > To say that use of SIOCDEVPRIVATE is discouraged would be an
> > understatement.
> >
> > Please create a generic ethtool based facility that other drivers in
> > similar situations can use as well.
> 
> Thanks for the input. I will explore the 'ethtool' option. We will have
> multiple control frames exchanged between user space and kernel for
> every flash update operation, most of this will be proprietary stuff
> that will get exchanged - I will explore how to provide a generic
> interface for that.
> 
> Giri

Maybe a debugfs or sysfs filesystem would work better than adding ioctl';s
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