linux-kernel - Re: [PATCH] gre6: add Kconfig dependency for NET_IPGRE

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Date:	Wed, 04 May 2016 14:12:54 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	arnd@...db.de
Cc:	kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, tom@...bertland.com, hakke_007@....de,
	pabeni@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gre6: add Kconfig dependency for NET_IPGRE_DEMUX

From: Arnd Bergmann <arnd@...db.de>
Date: Tue,  3 May 2016 17:19:57 +0200

> The ipv6 gre implementation was cleaned up to share more code
> with the ipv4 version, but it can be enabled even when NET_IPGRE_DEMUX
> is disabled, resulting in a link error:
> 
> net/built-in.o: In function `gre_rcv':
> :(.text+0x17f5d0): undefined reference to `gre_parse_header'
> ERROR: "gre_parse_header" [net/ipv6/ip6_gre.ko] undefined!
> 
> This adds a Kconfig dependency to prevent that now invalid
> configuration.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 308edfdf1563 ("gre6: Cleanup GREv6 receive path, call common GRE functions")

Applied, thanks.