linux-kernel - Re: [PATCH] ipvlan: fix building without netfilter

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Message-ID: <2147423.Poz9bNzMml@wuerfel>
Date:   Thu, 22 Sep 2016 14:58:24 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     David Miller <davem@...emloft.net>
Cc:     maheshb@...gle.com, dsa@...ulusnetworks.com, edumazet@...gle.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipvlan: fix building without netfilter

On Thursday, September 22, 2016 8:32:05 AM CEST David Miller wrote:
> From: Arnd Bergmann <arnd@...db.de>
> Date: Thu, 22 Sep 2016 11:40:52 +0200
> 
> > The new l3s mode in ipvlan relies on netfilter interfaces, but
> > the ipvlan driver can be configured when CONFIG_NETFILTER is disabled,
> > leading to a build error:
> > 
> > drivers/net/ipvlan/ipvlan.h:132:22: error: 'struct nf_hook_state' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
> > drivers/net/ipvlan/ipvlan_main.c:14:27: error: array type has incomplete element type 'struct nf_hook_ops'
> > ...
> > 
> > This adds a forward declaration for struct nf_hook_state, and hides
> > the newly added l3s code in an #ifdef.
> > 
> > Fixes: 4fbae7d83c98 ("ipvlan: Introduce l3s mode")
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> 
> I'm pretty sure I applied a Kconfig patch that added the
> necessary dependency.

Yes, I see the fix cf714ac147e0 ("ipvlan: Fix dependency issue") now, and
can confirm that today's linux-next works without my patch, thanks!

	Arnd