linux-kernel - Re: [PATCH] ila: add NETFILTER dependency

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20151218180931.GC29573@breakpoint.cc>
Date:	Fri, 18 Dec 2015 19:09:31 +0100
From:	Florian Westphal <fw@...len.de>
To:	Pablo Neira Ayuso <pablo@...filter.org>
Cc:	Arnd Bergmann <arnd@...db.de>, davem@...emloft.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Tom Herbert <tom@...bertland.com>,
	netfilter-devel@...r.kernel.org
Subject: Re: [PATCH] ila: add NETFILTER dependency

Pablo Neira Ayuso <pablo@...filter.org> wrote:
> On Fri, Dec 18, 2015 at 03:37:37PM +0100, Arnd Bergmann wrote:
> > The recently added generic ILA translation facility fails to
> > build when CONFIG_NETFILTER is disabled:
> > 
> > net/ipv6/ila/ila_xlat.c:229:20: warning: 'struct nf_hook_state' declared inside parameter list
> > net/ipv6/ila/ila_xlat.c:235:27: error: array type has incomplete element type 'struct nf_hook_ops'
> >  static struct nf_hook_ops ila_nf_hook_ops[] __read_mostly = {
> > 
> > This adds an explicit Kconfig dependency to avoid that case.
> 
> I'm afraid this extra Kconfig dependency that Arnd adds to fix this is
> a symptom that there is something that doesn't belong there.
> 
> I overlook this new hook on priority -1, how does this integrate into
> our infrastructure?

Looks problematic since address changes post ipv6 dnat translations,
its certainly unexpected for nft since we have magic address mangling
after -2 and 0 priroized tables...

However ... how is ILA supposed to work?

ila_xlat_outgoing has no callers, so it appears we only do this
stateless nat on ingress...?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/