Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Fri, 6 Jul 2018 17:00:37 +0200
From:   Florian Westphal <fw@strlen.de>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Florian Westphal <fw@strlen.de>,
        Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
        "David S. Miller" <davem@davemloft.net>,
        =?iso-8859-15?Q?M=E1t=E9?= Eckl <ecklm94@gmail.com>,
        Fernando Fernandez Mancera <ffmancera@riseup.net>,
        "Pablo M. Bermudo Garay" <pablombg@gmail.com>,
        Felix Fietkau <nbd@nbd.name>, netfilter-devel@vger.kernel.org,
        coreteam@netfilter.org, Networking <netdev@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] netfilter: conntrack: add weak IPV6 dependency
Message-ID: <20180706150037.knqt736uq6uyh3bs@breakpoint.cc>
References: <20180706130005.3640993-1-arnd@arndb.de>
 <20180706135516.viz6pjtkdmcoqq2l@breakpoint.cc>
 <CAK8P3a1o6+dcZuW_iMGzwBBw_dcW41QAQ2Mu4A5Ru9ScnwaYDA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAK8P3a1o6+dcZuW_iMGzwBBw_dcW41QAQ2Mu4A5Ru9ScnwaYDA@mail.gmail.com>
User-Agent: NeoMutt/20170113 (1.7.2)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Arnd Bergmann <arnd@arndb.de> wrote:
> and that resulted in a new build failure:
> 
> net/netfilter/nf_conntrack_proto.o:(.rodata+0x788): undefined
> reference to `nf_conntrack_l4proto_icmpv6'
> net/ipv6/netfilter/nf_conntrack_reasm.o: In function `nf_ct_frag6_expire':
> nf_conntrack_reasm.c:(.text+0x2320): undefined reference to
> `ip6_expire_frag_queue'
> net/ipv6/netfilter/nf_conntrack_reasm.o: In function `nf_ct_frag6_init':
> nf_conntrack_reasm.c:(.text+0x2384): undefined reference to `ip6_frag_init'
> nf_conntrack_reasm.c:(.text+0x2394): undefined reference to `ip6_frag_init'
> nf_conntrack_reasm.c:(.text+0x2398): undefined reference to `ip6_rhash_params'
> net/ipv6/netfilter/nf_conntrack_reasm.o: In function `nf_ct_frag6_expire':
> nf_conntrack_reasm.c:(.text+0x10bc): undefined reference to
> `ip6_expire_frag_queue'
> 
> I don't think we can get CONFIG_NF_DEFRAG_IPV6=y to work with IPV6=m.

Yes, not with current implementation, but I still don't think this
is unavoidable.

In case this is urgent I'm fine with the patch that adds the dependency,
otherwise I'd like to try and disentangle nf_conntrack_reasm and ipv6.