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Subject: Re: [PATCH nf-next v3 3/3] netfilter: Introduce egress hook
To:     =?UTF-8?Q?Laura_Garc=c3=ada_Li=c3=a9bana?= <nevola@gmail.com>
Cc:     Lukas Wunner <lukas@wunner.de>,
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        Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
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        netdev@vger.kernel.org, Alexei Starovoitov <ast@kernel.org>,
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        Thomas Graf <tgraf@suug.ch>, David Miller <davem@davemloft.net>
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From:   Daniel Borkmann <daniel@iogearbox.net>
Message-ID: <b1ae75ac-82b5-aa24-c59a-3988d94d6a10@iogearbox.net>
Date:   Tue, 8 Sep 2020 00:11:22 +0200
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On 9/5/20 1:18 PM, Laura García Liébana wrote:
> On Fri, Sep 4, 2020 at 11:14 PM Daniel Borkmann <daniel@iogearbox.net> wrote:
[...]
> Something like this seems more trivial to me:
> 
> table netdev mytable {
>      chain mychain {
>          type filter hook egress device "eth0" priority 100; policy drop;
>          meta protocol != 0x419C accept
>      }
> }

Sure, different frontends, so what?! You could also wrap that code into a
simple a.out or have nft style syntax jit to bpf ...