netdev - Re: [PATCH net-next] macvlan: pass get_ts_info and SIOC[SG]HWTSTAMP ioctl to real device

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Message-ID: <20190508135858.GA8780@unicorn.suse.cz>
Date:   Wed, 8 May 2019 15:58:58 +0200
From:   Michal Kubecek <mkubecek@...e.cz>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     Miroslav Lichvar <mlichvar@...hat.com>,
        Richard Cochran <richardcochran@...il.com>,
        Jiri Benc <jbenc@...hat.com>, netdev@...r.kernel.org,
        David Miller <davem@...emloft.net>,
        Patrick McHardy <kaber@...sh.net>,
        stefan.sorensen@...ctralink.com
Subject: Re: [PATCH net-next] macvlan: pass get_ts_info and SIOC[SG]HWTSTAMP
 ioctl to real device

On Wed, May 08, 2019 at 09:41:59AM +0800, Hangbin Liu wrote:
> On Tue, May 07, 2019 at 10:35:59AM +0200, Miroslav Lichvar wrote:
> > On Mon, May 06, 2019 at 07:01:23AM -0700, Richard Cochran wrote:
> > > On Thu, Apr 25, 2019 at 09:40:06PM +0800, Hangbin Liu wrote:
> > > > Would you please help have a look at it and see which way we should use?
> > > > Drop SIOCSHWTSTAMP in container or add a filter on macvlan(maybe only in
> > > > container)?
> > > 
> > > I vote for dropping SIOCSHWTSTAMP altogether.  Why?  Because the
> > > filter idea means that the ioctl will magically succeed or fail, based
> > > on the unknowable state of the container's host.
> > 
> > That's a good point. I agree that SIOCSHWTSTAMP always failing would
> > be a less surprising behavior than failing only with some specific
> > configurations.
> 
> Thanks for the reply. As net-next is closed now. I will post the fix
> to net branch after merging finished.

net-next has been already merged into master and net so if it's a fix,
you don't have to wait (and you shouldn't).

Michal Kubecek