linux-kernel - Re: [PATCH v7 10/33] net: dummy

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Message-ID: <CAG-2HqV0LV_ZtK=S-nLsWAfQ_ayOuGZHcGC495pAkMijeSzx3Q@mail.gmail.com>
Date:	Thu, 10 Jul 2014 12:33:57 +0200
From:	Tom Gundersen <teg@...m.no>
To:	David Herrmann <dh.herrmann@...il.com>
Cc:	Bjørn Mork <bjorn@...k.no>,
	netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>, Kay Sievers <kay@...y.org>,
	dingtianhong <dingtianhong@...wei.com>,
	Tan Xiaojun <tanxiaojun@...wei.com>,
	WANG Cong <xiyou.wangcong@...il.com>
Subject: Re: [PATCH v7 10/33] net: dummy - set name assign type

On Thu, Jul 10, 2014 at 12:26 PM, David Herrmann <dh.herrmann@...il.com> wrote:
> Hi
>
>>> The same goes for NET_NAME_USER and NET_NAME_RENAMED. These are the same
>>> from a kernel point of view.
>>
>> You mean to collapse the two, and just label renamed interfaces
>> NET_NAME_USER instead?
>
> I have no real objections to merging NAME_USER and NAME_RENAMED. Both
> values imply that there is a user-space authority that applied some
> kind of rules to the naming-scheme. Therefore, anyone reacting to
> those names should better treat them equally and fix the
> naming-authority instead of overwriting it.

I basically agree. There is no strong reason to keep these separate,
so I would not object strongly to merging them.

However, I also don't see any harm in keeping the distinction. If
userspace wants to treat them the same, it easily can. However, if a
usecase appears in the future where the distinction is important, we
can no longer split them apart again. For that reason, I'd slightly
prefer keeping them separate, unless there is a compelling reason not
to...

Cheers,

Tom
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