netdev - Re: Problem with iflink in netns

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Message-ID: <20140513175118.1e6bc156@nehalam.linuxnetplumber.net>
Date:	Tue, 13 May 2014 17:51:18 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Cong Wang <cwang@...pensource.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Problem with iflink in netns

On Tue, 13 May 2014 13:44:24 -0700
Cong Wang <cwang@...pensource.com> wrote:

> On Tue, May 13, 2014 at 1:05 PM, Stephen Hemminger
> <stephen@...workplumber.org> wrote:
> >
> > That won't solve the problem.
> >  1. a pointer increase size of netns and requires refcount
> 
> Yes.
> 
> >  2. iflink is still exposed in kernel user API and has to be set
> >     otherwise the device is falsely reported.
> 
> Then report 0 which is not a valid ifindex?

But that is what devices without a parent report.
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