From: Stephen Hemminger <stephen@networkplumber.org>
To: Cong Wang <cwang@twopensource.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
netdev <netdev@vger.kernel.org>
Subject: Re: Problem with iflink in netns
Date: Tue, 13 May 2014 17:51:18 -0700 [thread overview]
Message-ID: <20140513175118.1e6bc156@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <CAHA+R7P_MBrPLVqtvCnC+bPkQ7FHRiLgi0zHAQkz5-9_Z1MBJA@mail.gmail.com>
On Tue, 13 May 2014 13:44:24 -0700
Cong Wang <cwang@twopensource.com> wrote:
> On Tue, May 13, 2014 at 1:05 PM, Stephen Hemminger
> <stephen@networkplumber.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.
next prev parent reply other threads:[~2014-05-14 0:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-13 15:39 Problem with iflink in netns Stephen Hemminger
2014-05-13 18:20 ` Cong Wang
2014-05-13 20:05 ` Stephen Hemminger
2014-05-13 20:44 ` Cong Wang
2014-05-14 0:51 ` Stephen Hemminger [this message]
2014-05-14 21:11 ` Cong Wang
2014-05-14 8:23 ` Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 0/5] netns: allow to identify peer netns Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 1/5] netns: allocate netns ids Nicolas Dichtel
2014-07-02 13:33 ` Sergei Shtylyov
2014-07-02 13:57 ` Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 2/5] netns: add genl cmd to get the id of a netns Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 3/5] rtnl: add link netns id to interface messages Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 4/5] iptunnels: advertise link netns via netlink Nicolas Dichtel
2014-07-02 11:59 ` [RFC PATCH net-next 5/5] rtnl: allow to create device with IFLA_LINK_NETNSID set Nicolas Dichtel
2014-07-02 20:09 ` [RFC PATCH net-next 0/5] netns: allow to identify peer netns Eric W. Biederman
2014-07-02 21:47 ` Nicolas Dichtel
2014-07-15 14:32 ` Nicolas Dichtel
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