netdev - Re: [PATCH 1/1] netfilter: nf_tables: fib: Drop IPV6 packages if IPv6 is disabled on boot

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Date:   Mon, 26 Aug 2019 13:47:55 -0300
From:   Leonardo Bras <leonardo@...ux.ibm.com>
To:     Florian Westphal <fw@...len.de>,
        Pablo Neira Ayuso <pablo@...filter.org>
Cc:     netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 1/1] netfilter: nf_tables: fib: Drop IPV6 packages if
 IPv6 is disabled on boot

Hello Pablo, Florian,

I implemented a V2 of this patch with the changes you proposed.
Could you please give your feedback on that patch?
https://lkml.org/lkml/2019/8/21/527

Thanks!

On Wed, 2019-08-21 at 11:58 +0200, Pablo Neira Ayuso wrote:
> On Tue, Aug 20, 2019 at 01:15:58PM -0300, Leonardo Bras wrote:
> > On Tue, 2019-08-20 at 07:36 +0200, Florian Westphal wrote:
> > > Wouldn't fib_netdev.c have the same problem?
> > Probably, but I haven't hit this issue yet.
> > 
> > > If so, might be better to place this test in both
> > > nft_fib6_eval_type and nft_fib6_eval.
> > 
> > I think that is possible, and not very hard to do.
> > 
> > But in my humble viewpoint, it looks like it's nft_fib_inet_eval() and
> > nft_fib_netdev_eval() have the responsibility to choose a valid
> > protocol or drop the package. 
> > I am not sure if it would be a good move to transfer this
> > responsibility to nft_fib6_eval_type() and nft_fib6_eval(), so I would
> > rather add the same test to nft_fib_netdev_eval().
> > 
> > Does it make sense?
> 
> Please, update common code to netdev and ip6 extensions as Florian
> suggests.
> 
> Thanks.

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