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References: <20220429111541.339853-1-maximmi@nvidia.com> <20220429111541.339853-5-maximmi@nvidia.com>
In-Reply-To: <20220429111541.339853-5-maximmi@nvidia.com>
From:   Alexei Starovoitov <alexei.starovoitov@gmail.com>
Date:   Fri, 29 Apr 2022 09:41:51 -0700
Message-ID: <CAADnVQJrRONd+pPpfahyzLG7WCP54y_eoNb_8zCsN_m=S_OSZQ@mail.gmail.com>
Subject: Re: [PATCH bpf-next v8 4/5] bpf: Add selftests for raw syncookie helpers
To:     Maxim Mikityanskiy <maximmi@nvidia.com>
Cc:     bpf <bpf@vger.kernel.org>, Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        Network Development <netdev@vger.kernel.org>,
        Tariq Toukan <tariqt@nvidia.com>,
        Martin KaFai Lau <kafai@fb.com>,
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        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>,
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        Shuah Khan <shuah@kernel.org>,
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        Nick Desaulniers <ndesaulniers@google.com>,
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        Florent Revest <revest@chromium.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= <toke@toke.dk>,
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On Fri, Apr 29, 2022 at 4:16 AM Maxim Mikityanskiy <maximmi@nvidia.com> wrote:
> +       SYS("iptables -t raw -I PREROUTING \
> +           -i tmp1 -p tcp -m tcp --syn --dport 8080 -j CT --notrack");
> +       SYS("iptables -t filter -A INPUT \
> +           -i tmp1 -p tcp -m tcp --dport 8080 -m state --state INVALID,UNTRACKED \
> +           -j SYNPROXY --sack-perm --timestamp --wscale 7 --mss 1460");
> +       SYS("iptables -t filter -A INPUT \
> +           -i tmp1 -m state --state INVALID -j DROP");
> +
> +       ctrl_file = SYS_OUT("./xdp_synproxy --iface tmp1 --ports 8080 --single \
> +                           --mss4 1460 --mss6 1440 --wscale 7 --ttl 64");

That doesn't work for test_progs-no_alu32.
sh: line 1: ./xdp_synproxy: No such file or directory
https://github.com/kernel-patches/bpf/runs/6227226675?check_suite_focus=true#step:6:7380

and going to be fragile in general.
Could you launch it as a kthread or fork it
like other tests are doing ?