From: Andrii Nakryiko <andrii.nakryiko@gmail.com>
To: Alexei Starovoitov <ast@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Daniel Borkmann <daniel@iogearbox.net>,
x86@kernel.org, Networking <netdev@vger.kernel.org>,
bpf <bpf@vger.kernel.org>, Kernel Team <kernel-team@fb.com>
Subject: Re: [PATCH v2 bpf-next 12/12] selftests/bpf: add kfree_skb raw_tp test
Date: Fri, 11 Oct 2019 12:05:32 -0700 [thread overview]
Message-ID: <CAEf4BzbDQH6AaSJdA5YUTQiAH8co_nBbZZ30W=8k+JB_xPWEMA@mail.gmail.com> (raw)
In-Reply-To: <20191010041503.2526303-13-ast@kernel.org>
On Wed, Oct 9, 2019 at 9:15 PM Alexei Starovoitov <ast@kernel.org> wrote:
>
> Load basic cls_bpf program.
> Load raw_tracepoint program and attach to kfree_skb raw tracepoint.
> Trigger cls_bpf via prog_test_run.
> At the end of test_run kernel will call kfree_skb
> which will trigger trace_kfree_skb tracepoint.
> Which will call our raw_tracepoint program.
> Which will take that skb and will dump it into perf ring buffer.
> Check that user space received correct packet.
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
> Acked-by: Andrii Nakryiko <andriin@fb.com>
> ---
> .../selftests/bpf/prog_tests/kfree_skb.c | 90 +++++++++++++++++++
> tools/testing/selftests/bpf/progs/kfree_skb.c | 74 +++++++++++++++
> 2 files changed, 164 insertions(+)
> create mode 100644 tools/testing/selftests/bpf/prog_tests/kfree_skb.c
> create mode 100644 tools/testing/selftests/bpf/progs/kfree_skb.c
>
[...]
> +
> +void test_kfree_skb(void)
> +{
> + struct bpf_prog_load_attr attr = {
> + .file = "./kfree_skb.o",
> + .log_level = 2,
This is rather verbose and memory-consuming. Do you really want to
leave it at 2?
> + };
> +
> + struct bpf_object *obj, *obj2 = NULL;
> + struct perf_buffer_opts pb_opts = {};
> + struct perf_buffer *pb = NULL;
> + struct bpf_link *link = NULL;
> + struct bpf_map *perf_buf_map;
> + struct bpf_program *prog;
> + __u32 duration, retval;
> + int err, pkt_fd, kfree_skb_fd;
> + bool passed = false;
> +
[...]
prev parent reply other threads:[~2019-10-11 19:05 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-10 4:14 [PATCH v2 bpf-next 00/12] bpf: revolutionize bpf tracing Alexei Starovoitov
2019-10-10 4:14 ` [PATCH v2 bpf-next 01/12] bpf: add typecast to raw_tracepoints to help BTF generation Alexei Starovoitov
2019-10-10 4:14 ` [PATCH v2 bpf-next 02/12] bpf: add typecast to bpf helpers " Alexei Starovoitov
2019-10-10 4:14 ` [PATCH v2 bpf-next 03/12] bpf: process in-kernel BTF Alexei Starovoitov
2019-10-11 17:56 ` Andrii Nakryiko
2019-10-10 4:14 ` [PATCH v2 bpf-next 04/12] bpf: add attach_btf_id attribute to program load Alexei Starovoitov
2019-10-11 17:58 ` Andrii Nakryiko
2019-10-10 4:14 ` [PATCH v2 bpf-next 05/12] libbpf: auto-detect btf_id of raw_tracepoint Alexei Starovoitov
2019-10-11 18:02 ` Andrii Nakryiko
2019-10-11 18:07 ` Andrii Nakryiko
2019-10-12 0:40 ` Alexei Starovoitov
2019-10-12 1:29 ` Alexei Starovoitov
2019-10-12 4:38 ` Andrii Nakryiko
2019-10-12 4:53 ` Alexei Starovoitov
2019-10-12 4:39 ` Andrii Nakryiko
2019-10-10 4:14 ` [PATCH v2 bpf-next 06/12] bpf: implement accurate raw_tp context access via BTF Alexei Starovoitov
2019-10-11 18:31 ` Andrii Nakryiko
2019-10-11 23:13 ` Andrii Nakryiko
2019-10-10 4:14 ` [PATCH v2 bpf-next 07/12] bpf: attach raw_tp program with BTF via type name Alexei Starovoitov
2019-10-11 18:44 ` Andrii Nakryiko
2019-10-10 4:14 ` [PATCH v2 bpf-next 08/12] bpf: add support for BTF pointers to interpreter Alexei Starovoitov
2019-10-10 4:15 ` [PATCH v2 bpf-next 09/12] bpf: add support for BTF pointers to x86 JIT Alexei Starovoitov
2019-10-11 18:48 ` Andrii Nakryiko
2019-10-10 4:15 ` [PATCH v2 bpf-next 10/12] bpf: check types of arguments passed into helpers Alexei Starovoitov
2019-10-11 19:02 ` Andrii Nakryiko
2019-10-12 1:39 ` Alexei Starovoitov
2019-10-12 4:25 ` Andrii Nakryiko
2019-10-10 4:15 ` [PATCH v2 bpf-next 11/12] bpf: disallow bpf_probe_read[_str] helpers Alexei Starovoitov
2019-10-11 19:03 ` Andrii Nakryiko
2019-10-10 4:15 ` [PATCH v2 bpf-next 12/12] selftests/bpf: add kfree_skb raw_tp test Alexei Starovoitov
2019-10-10 11:07 ` Ido Schimmel
2019-10-10 19:07 ` Alexei Starovoitov
2019-10-11 19:05 ` Andrii Nakryiko [this message]
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