linux-kernel - Re: [PATCH] netfilter: nf_conntrack

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Message-ID: <CAK8P3a2wewn5fqK_EB=hCkSN3cXcZbG1i3cZewkz93PGmGDBnA@mail.gmail.com>
Date:   Tue, 18 Jun 2019 20:13:31 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Alin Năstac <alin.nastac@...il.com>
Cc:     Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Máté Eckl <ecklm94@...il.com>,
        Fernando Fernandez Mancera <ffmancera@...eup.net>,
        netfilter-devel <netfilter-devel@...r.kernel.org>,
        coreteam@...filter.org, Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] netfilter: nf_conntrack_sip: fix IPV6 dependency

On Tue, Jun 18, 2019 at 8:09 PM Arnd Bergmann <arnd@...db.de> wrote:
> On Fri, Mar 8, 2019 at 5:23 PM Alin Năstac <alin.nastac@...il.com> wrote:
> > On Fri, Mar 8, 2019 at 5:04 PM Pablo Neira Ayuso <pablo@...filter.org> wrote:
> > > On Mon, Mar 04, 2019 at 09:40:12PM +0100, Arnd Bergmann wrote:
> > > > With CONFIG_IPV6=m and CONFIG_NF_CONNTRACK_SIP=y, we now get a link failure:
> > > >
> > > > net/netfilter/nf_conntrack_sip.o: In function `process_sdp':
> > > > nf_conntrack_sip.c:(.text+0x4344): undefined reference to `ip6_route_output_flags'
> > >
> > > I see. We can probably use nf_route() instead.
> > >
> > > Or if needed, use struct nf_ipv6_ops for this.
> > >
> > >         if (v6ops)
> > >                 ret = v6ops->route_xyz(...);
> > >
> > > @Alin: Would you send us a patch to do so to fix a3419ce3356cf1f
> > > netfilter: nf_conntrack_sip: add sip_external_media logic".
> >
> > nf_ip6_route(net, &dst, &fl6, false) seems to be appropriate.
> > I'll send the patch Monday.
>
> I see the original bug I reported is still there. Can you send that patch
> you had planned to do?

Hmm, I think I mixed up this patch with a different one that is missing.
Please ignore my reply above.

      Arnd