Re: [PATCH net-next 1/1] rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK

[Christian Brauner]

On Wed, Jan 31, 2018 at 10:30:44AM -0500, David Miller wrote:
> From: Christian Brauner <christian.brauner@xxxxxxxxxx>
> Date: Mon, 29 Jan 2018 18:07:20 +0100
> 
> > - Backwards Compatibility:
> >   If userspace wants to determine whether RTM_NEWLINK supports the
> >   IFLA_IF_NETNSID property they should first send an RTM_GETLINK request
> >   with IFLA_IF_NETNSID on lo. If either EACCESS is returned or the reply
> >   does not include IFLA_IF_NETNSID userspace should assume that
> >   IFLA_IF_NETNSID is not supported on this kernel.
> >   If the reply does contain an IFLA_IF_NETNSID property userspace
> >   can send an RTM_NEWLINK with a IFLA_IF_NETNSID property. If they receive
> >   EOPNOTSUPP then the kernel does not support the IFLA_IF_NETNSID property
> >   with RTM_NEWLINK. Userpace should then fallback to other means.
> > 
> > - Security:
> >   Callers must have CAP_NET_ADMIN in the owning user namespace of the
> >   target network namespace.
> > 
> > Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
> 
> Applied.

Thanks!