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

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Date:   Fri, 2 Sep 2022 16:11:41 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Lorenzo Bianconi <lorenzo@...nel.org>, bpf@...r.kernel.org
Cc:     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, lorenzo.bianconi@...hat.com,
        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 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

[...]
   All error logs:
   test_bpf_nf_ct:PASS:test_bpf_nf__open_and_load 0 nsec
   test_bpf_nf_ct:PASS:iptables 0 nsec
   test_bpf_nf_ct:PASS:start_server 0 nsec
   connect_to_server:PASS:socket 0 nsec
   connect_to_server:PASS:connect_fd_to_fd 0 nsec
   test_bpf_nf_ct:PASS:connect_to_server 0 nsec
   test_bpf_nf_ct:PASS:accept 0 nsec
   test_bpf_nf_ct:PASS:sockaddr len 0 nsec
   test_bpf_nf_ct:PASS:bpf_prog_test_run 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for NULL bpf_tuple 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for reserved not set to 0 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for netns_id < -1 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for len__opts != NF_BPF_CT_OPTS_SZ 0 nsec
   test_bpf_nf_ct:PASS:Test EPROTO for l4proto != TCP or UDP 0 nsec
   test_bpf_nf_ct:PASS:Test ENONET for bad but valid netns_id 0 nsec
   test_bpf_nf_ct:PASS:Test ENOENT for failed lookup 0 nsec
   test_bpf_nf_ct:PASS:Test EAFNOSUPPORT for invalid len__tuple 0 nsec
   test_bpf_nf_ct:PASS:Test for alloc new entry 0 nsec
   test_bpf_nf_ct:PASS:Test for insert new entry 0 nsec
   test_bpf_nf_ct:PASS:Test for successful lookup 0 nsec
   test_bpf_nf_ct:PASS:Test for min ct timeout update 0 nsec
   test_bpf_nf_ct:PASS:Test for max ct timeout update 0 nsec
   test_bpf_nf_ct:PASS:Test for ct status update  0 nsec
   test_bpf_nf_ct:PASS:Test existing connection lookup 0 nsec
   test_bpf_nf_ct:PASS:Test existing connection lookup ctmark 0 nsec
   test_bpf_nf_ct:FAIL:Test for source natting unexpected Test for source natting: actual -22 != expected 0
   test_bpf_nf_ct:FAIL:Test for destination natting unexpected Test for destination natting: actual -22 != expected 0
   #16/1    bpf_nf/xdp-ct:FAIL
   test_bpf_nf_ct:PASS:test_bpf_nf__open_and_load 0 nsec
   test_bpf_nf_ct:PASS:iptables 0 nsec
   test_bpf_nf_ct:PASS:start_server 0 nsec
   connect_to_server:PASS:socket 0 nsec
   connect_to_server:PASS:connect_fd_to_fd 0 nsec
   test_bpf_nf_ct:PASS:connect_to_server 0 nsec
   test_bpf_nf_ct:PASS:accept 0 nsec
   test_bpf_nf_ct:PASS:sockaddr len 0 nsec
   test_bpf_nf_ct:PASS:bpf_prog_test_run 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for NULL bpf_tuple 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for reserved not set to 0 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for netns_id < -1 0 nsec
   test_bpf_nf_ct:PASS:Test EINVAL for len__opts != NF_BPF_CT_OPTS_SZ 0 nsec
   test_bpf_nf_ct:PASS:Test EPROTO for l4proto != TCP or UDP 0 nsec
   test_bpf_nf_ct:PASS:Test ENONET for bad but valid netns_id 0 nsec
   test_bpf_nf_ct:PASS:Test ENOENT for failed lookup 0 nsec
   test_bpf_nf_ct:PASS:Test EAFNOSUPPORT for invalid len__tuple 0 nsec
   test_bpf_nf_ct:PASS:Test for alloc new entry 0 nsec
   test_bpf_nf_ct:PASS:Test for insert new entry 0 nsec
   test_bpf_nf_ct:PASS:Test for successful lookup 0 nsec
   test_bpf_nf_ct:PASS:Test for min ct timeout update 0 nsec
   test_bpf_nf_ct:PASS:Test for max ct timeout update 0 nsec
   test_bpf_nf_ct:PASS:Test for ct status update  0 nsec
   test_bpf_nf_ct:PASS:Test existing connection lookup 0 nsec
   test_bpf_nf_ct:PASS:Test existing connection lookup ctmark 0 nsec
   test_bpf_nf_ct:FAIL:Test for source natting unexpected Test for source natting: actual -22 != expected 0
   test_bpf_nf_ct:FAIL:Test for destination natting unexpected Test for destination natting: actual -22 != expected 0
   #16/2    bpf_nf/tc-bpf-ct:FAIL
   #16      bpf_nf:FAIL
[...]