From: Florian Westphal <fw@strlen.de>
To: Andrii Melnychenko <a.melnychenko@vyos.io>
Cc: pablo@netfilter.org, kadlec@netfilter.org, phil@nwl.cc,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/1] nft_ct: Added nfct_seqadj_ext_add() for NAT'ed conntrack.
Date: Tue, 21 Oct 2025 18:34:06 +0200 [thread overview]
Message-ID: <aPe1_kECjXm3Ydfb@strlen.de> (raw)
In-Reply-To: <CANhDHd8uEkfyHnDSWGrMZyKg8u2LsaMf-YXQtvTGgni7jetdZg@mail.gmail.com>
Andrii Melnychenko <a.melnychenko@vyos.io> wrote:
> Hi all,
>
> > I think this needs something like this:
> >
> > if (!nfct_seqadj_ext_add(ct))
> > regs->verdict.code = NF_DROP;
>
> Okay - I'll update it. I'm planning a proper test.
>
> Apparently, I need to provide a simple test FTP server/client, not
> fully functional,
> but sufficient to "trigger" nf_conntrack_ftp.
Argh, I forgot we do have an ftp test case in the nftables repo, even
with NAT.
tests/shell/testcases/packetpath/nat_ftp
in nftables.git repo from git.netfilter.org.
So it would be easier to extend that instead of a new kselftest for the
kernel.
From a short glance I guess it works because the address rewrite doesn't
need to expand the packet, else this should have failed and found this
bug...
next prev parent reply other threads:[~2025-10-21 16:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-21 13:39 [PATCH v3 0/1] nf_conntrack_ftp: Added nfct_seqadj_ext_add() Andrii Melnychenko
2025-10-21 13:39 ` [PATCH v3 1/1] nft_ct: Added nfct_seqadj_ext_add() for NAT'ed conntrack Andrii Melnychenko
2025-10-21 14:34 ` Florian Westphal
2025-10-21 16:24 ` Andrii Melnychenko
2025-10-21 16:34 ` Florian Westphal [this message]
2025-10-22 0:11 ` Pablo Neira Ayuso
2025-10-22 11:14 ` Florian Westphal
2025-10-22 13:01 ` Andrii Melnychenko
2025-10-23 12:28 ` Andrii Melnychenko
2025-10-23 12:42 ` Florian Westphal
2025-10-24 12:26 ` Andrii Melnychenko
2025-10-24 12:58 ` Florian Westphal
2025-10-21 14:35 ` [PATCH v3 0/1] nf_conntrack_ftp: Added nfct_seqadj_ext_add() Florian Westphal
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