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To:     Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc:     Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        Jesper Dangaard Brouer <jbrouer@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>,
        Joanne Koong <joannelkoong@gmail.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Dave Marchevsky <davemarchevsky@fb.com>,
        Lorenzo Bianconi <lorenzo@kernel.org>,
        Geliang Tang <geliang.tang@suse.com>,
        Jakub Sitnicki <jakub@cloudflare.com>,
        Network Development <netdev@vger.kernel.org>,
        bpf <bpf@vger.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: Add BPF-helper for accessing CLOCK_TAI
In-Reply-To: <CAEf4BzZtraeLSP4wcNk7t4sqDK6t2HVoo57nkUhVVLNCWe=JfA@mail.gmail.com>
References: <20220606103734.92423-1-kurt@linutronix.de>
 <CAADnVQJ--oj+iZYXOwB1Rs9Qiy6Ph9HNha9pJyumVom0tiOFgg@mail.gmail.com>
 <875ylc6djv.ffs@tglx> <c166aa47-e404-e6ee-0ec5-0ead1923f412@redhat.com>
 <CAADnVQKqo1XfrPO8OYA1VpArKHZotuDjGNtxM0AftUj_R+vU7g@mail.gmail.com>
 <87pmhj15vf.fsf@kurt>
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 <87edxxg7qu.fsf@kurt>
 <CAEf4BzZtraeLSP4wcNk7t4sqDK6t2HVoo57nkUhVVLNCWe=JfA@mail.gmail.com>
Date:   Thu, 04 Aug 2022 08:40:51 +0200
Message-ID: <87k07o1pfw.fsf@kurt>
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On Wed Aug 03 2022, Andrii Nakryiko wrote:
>> +void test_tai(void)
>> +{
>> +       struct __sk_buff skb = {
>> +               .tstamp = 0,
>> +               .hwtstamp = 0,
>> +       };
>> +       LIBBPF_OPTS(bpf_test_run_opts, topts,
>> +               .data_in = &pkt_v4,
>> +               .data_size_in = sizeof(pkt_v4),
>> +               .ctx_in = &skb,
>> +               .ctx_size_in = sizeof(skb),
>> +               .ctx_out = &skb,
>> +               .ctx_size_out = sizeof(skb),
>> +       );
>> +       struct timespec now_tai;
>> +       struct bpf_object *obj;
>> +       int ret, prog_fd;
>> +
>> +       ret = bpf_prog_test_load("./test_tai.o",
>> +                                BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
>
> it would be best to rely on BPF skeleton, please see other tests
> including *.skel.h, thanks
>

Ah, nice. Adjusted the test case accordingly. Will post v2 after the
merge window. Thanks!

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