netdev - Re: [PATCH] ipv6: delete protocol when cleanup

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Date:	Tue, 18 Nov 2014 11:14:15 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Cong Wang <cwang@...pensource.com>
Cc:	Duan Jiong <duanj.fnst@...fujitsu.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] ipv6: delete protocol when cleanup

On Tue, 2014-11-18 at 10:56 -0800, Cong Wang wrote:
> On Tue, Nov 18, 2014 at 2:35 AM, Duan Jiong <duanj.fnst@...fujitsu.com> wrote:
> >
> > pim6_protocol was added when initiation, but it not deleted.
> >
> > Signed-off-by: Duan Jiong <duanj.fnst@...fujitsu.com>

...

> Looks like rtnl_unregister() is missing as well.

Is it really worth bothering ?

May I remind you we took the decision one year ago to not bother about
removing ipv6 module.

commit 8ce440610357b77587433d0df647cea69a6890a8
Author: Cong Wang <amwang@...hat.com>
Date:   Sat Sep 21 11:12:21 2013 +0800

    ipv6: do not allow ipv6 module to be removed
    
    There was some bug report on ipv6 module removal path before.
    Also, as Stephen pointed out, after vxlan module gets ipv6 support,
    the ipv6 stub it used is not safe against this module removal either.
    So, let's just remove inet6_exit() so that ipv6 module will not be
    able to be unloaded.
    
    Cc: Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
    Cc: Stephen Hemminger <stephen@...workplumber.org>
    Cc: David S. Miller <davem@...emloft.net>
    Signed-off-by: Cong Wang <amwang@...hat.com>
    Signed-off-by: David S. Miller <davem@...emloft.net>


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