Re: [PATCH AUTOSEL 6.0 09/13] net: loopback: use NET_NAME_PREDICTABLE for name_assign_type

[Sasha Levin]

On Tue, Dec 06, 2022 at 11:49:56AM -0800, Jakub Kicinski wrote:
> On Tue,  6 Dec 2022 04:49:12 -0500 Sasha Levin wrote:
> > From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
> >
> > [ Upstream commit 31d929de5a112ee1b977a89c57de74710894bbbf ]
> >
> > When the name_assign_type attribute was introduced (commit
> > 685343fc3ba6, "net: add name_assign_type netdev attribute"), the
> > loopback device was explicitly mentioned as one which would make use
> > of NET_NAME_PREDICTABLE:
> >
> >     The name_assign_type attribute gives hints where the interface name of a
> >     given net-device comes from. These values are currently defined:
> > ...
> >       NET_NAME_PREDICTABLE:
> >         The ifname has been assigned by the kernel in a predictable way
> >         that is guaranteed to avoid reuse and always be the same for a
> >         given device. Examples include statically created devices like
> >         the loopback device [...]
> >
> > Switch to that so that reading /sys/class/net/lo/name_assign_type
> > produces something sensible instead of returning -EINVAL.
>
> Yeah... we should have applied it to -next, I think backporting it is
> a good idea but I wish it had more time in the -next tree since it's
> a "uAPI alignment" :(
>
> Oh, well, very unlikely it will break anything, tho, so let's do it.

Want me to push it back a week to the next batch? It'll give it two
weeks instead of the usual week.

--
Thanks,
Sasha