netdev - Re: [PATCH bpf-next 0/4] Introduce bpf_ct_set_nat

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Date:   Fri,  2 Sep 2022 15:44:20 +0000
From:   Daniel Müller <deso@...teo.net>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Lorenzo Bianconi <lorenzo.bianconi@...hat.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>, bpf@...r.kernel.org,
        netdev@...r.kernel.org, ast@...nel.org, andrii@...nel.org,
        davem@...emloft.net, kuba@...nel.org, edumazet@...gle.com,
        pabeni@...hat.com, pablo@...filter.org, fw@...len.de,
        netfilter-devel@...r.kernel.org, brouer@...hat.com,
        toke@...hat.com, memxor@...il.com
Subject: Re: [PATCH bpf-next 0/4] Introduce bpf_ct_set_nat_info kfunc helper

On Fri, Sep 02, 2022 at 04:41:28PM +0200, Daniel Borkmann wrote:
> On 9/2/22 4:35 PM, Lorenzo Bianconi wrote:
> > On Sep 02, Daniel Borkmann wrote:
> > > On 9/1/22 6:43 PM, Lorenzo Bianconi wrote:
> > > > Introduce bpf_ct_set_nat_info kfunc helper in order to set source and
> > > > destination nat addresses/ports in a new allocated ct entry not inserted
> > > > in the connection tracking table yet.
> > > > Introduce support for per-parameter trusted args.
> > > > 
> > > > Kumar Kartikeya Dwivedi (2):
> > > >     bpf: Add support for per-parameter trusted args
> > > >     selftests/bpf: Extend KF_TRUSTED_ARGS test for __ref annotation
> > > > 
> > > > Lorenzo Bianconi (2):
> > > >     net: netfilter: add bpf_ct_set_nat_info kfunc helper
> > > >     selftests/bpf: add tests for bpf_ct_set_nat_info kfunc
> > > > 
> > > >    Documentation/bpf/kfuncs.rst                  | 18 +++++++
> > > >    kernel/bpf/btf.c                              | 39 ++++++++++-----
> > > >    net/bpf/test_run.c                            |  9 +++-
> > > >    net/netfilter/nf_conntrack_bpf.c              | 49 ++++++++++++++++++-
> > > >    .../testing/selftests/bpf/prog_tests/bpf_nf.c |  2 +
> > > >    .../testing/selftests/bpf/progs/test_bpf_nf.c | 26 +++++++++-
> > > >    tools/testing/selftests/bpf/verifier/calls.c  | 38 +++++++++++---
> > > >    7 files changed, 156 insertions(+), 25 deletions(-)
> > > > 
> > > 
> > > Looks like this fails BPF CI, ptal:
> > > 
> > > https://github.com/kernel-patches/bpf/runs/8147936670?check_suite_focus=true
> > 
> > Hi Daniel,
> > 
> > it seems CONFIG_NF_NAT is not set in the kernel config file.
> > Am I supposed to enable it in bpf-next/tools/testing/selftests/bpf/config?
> 
> This would have to be set there and added to the patches, yes. @Andrii/DanielM, is
> this enough or are other steps needed on top of that?

Yes, I think it should be set at said location. Nothing else should be
needed in addition that I can think of.

Thanks,
Daniel

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