netdev - Re: [Patch net-next v2] gre: fix a regression in ioctl

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Date:	Sat, 29 Jun 2013 11:33:42 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Pravin Shelar <pshelar@...ira.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>
Subject: Re: [Patch net-next v2] gre: fix a regression in ioctl

On Fri, 2013-06-28 at 20:28 -0700, Pravin Shelar wrote:
> On Fri, Jun 28, 2013 at 7:24 PM, Cong Wang <amwang@...hat.com> wrote:
> > From: Cong Wang <amwang@...hat.com>
> >
> > When testing GRE tunnel, I got:
> >
> >  # ip tunnel show
> >  get tunnel gre0 failed: Invalid argument
> >  get tunnel gre1 failed: Invalid argument
> >
> > This is a regression introduced by commit c54419321455631079c7d
> > ("GRE: Refactor GRE tunneling code.") because previously we
> > only check the parameters for SIOCADDTUNNEL and SIOCCHGTUNNEL,
> > after that commit, the check is moved for all commands.
> >
> 
> right, that API got changed. But these checks can not be added to
> generic ip_tunnel layer, which is also used by other tunnel modules.
> Can you keep that check in ip_gre module but do it only for add and
> del tunnel commands?

Yeah.

BTW, ipip has the same bug... I will send a patch for ipip too.

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