From: Andrii Nakryiko <andrii.nakryiko@gmail.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
Kernel Team <kernel-team@fb.com>
Subject: Re: [PATCH v2 bpf-next 05/16] selftests/bpf: Test for syscall program type
Date: Mon, 26 Apr 2021 10:02:59 -0700 [thread overview]
Message-ID: <CAEf4BzafXkmX5RJ+c+4h9ZXV6mvto=Shx3JWL1m_AkXc9pU_4g@mail.gmail.com> (raw)
In-Reply-To: <20210423002646.35043-6-alexei.starovoitov@gmail.com>
On Thu, Apr 22, 2021 at 5:26 PM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
> From: Alexei Starovoitov <ast@kernel.org>
>
> bpf_prog_type_syscall is a program that creates a bpf map,
> updates it, and loads another bpf program using bpf_sys_bpf() helper.
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
> ---
> tools/testing/selftests/bpf/Makefile | 1 +
> .../selftests/bpf/prog_tests/syscall.c | 53 ++++++++++++++
> tools/testing/selftests/bpf/progs/syscall.c | 73 +++++++++++++++++++
> 3 files changed, 127 insertions(+)
> create mode 100644 tools/testing/selftests/bpf/prog_tests/syscall.c
> create mode 100644 tools/testing/selftests/bpf/progs/syscall.c
>
> diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
> index c5bcdb3d4b12..9fdfdbc61857 100644
> --- a/tools/testing/selftests/bpf/Makefile
> +++ b/tools/testing/selftests/bpf/Makefile
> @@ -278,6 +278,7 @@ MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
> CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
> BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
> -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
> + -I$(TOOLSINCDIR) \
is this for filter.h? also, please align \ with the previous line
> -I$(abspath $(OUTPUT)/../usr/include)
>
> CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
> diff --git a/tools/testing/selftests/bpf/prog_tests/syscall.c b/tools/testing/selftests/bpf/prog_tests/syscall.c
> new file mode 100644
> index 000000000000..e550e36bb5da
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/prog_tests/syscall.c
> @@ -0,0 +1,53 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2021 Facebook */
> +#include <test_progs.h>
> +#include "syscall.skel.h"
> +
> +struct args {
> + __u64 log_buf;
> + __u32 log_size;
> + int max_entries;
> + int map_fd;
> + int prog_fd;
> +};
> +
> +void test_syscall(void)
> +{
> + static char verifier_log[8192];
> + struct args ctx = {
> + .max_entries = 1024,
> + .log_buf = (uintptr_t) verifier_log,
> + .log_size = sizeof(verifier_log),
> + };
> + struct bpf_prog_test_run_attr tattr = {
> + .ctx_in = &ctx,
> + .ctx_size_in = sizeof(ctx),
> + };
> + struct syscall *skel = NULL;
> + __u64 key = 12, value = 0;
> + __u32 duration = 0;
> + int err;
> +
> + skel = syscall__open_and_load();
> + if (CHECK(!skel, "skel_load", "syscall skeleton failed\n"))
> + goto cleanup;
> +
> + tattr.prog_fd = bpf_program__fd(skel->progs.bpf_prog);
> + err = bpf_prog_test_run_xattr(&tattr);
> + if (CHECK(err || tattr.retval != 1, "test_run sys_bpf",
> + "err %d errno %d retval %d duration %d\n",
> + err, errno, tattr.retval, tattr.duration))
> + goto cleanup;
> +
> + CHECK(ctx.map_fd <= 0, "map_fd", "fd = %d\n", ctx.map_fd);
> + CHECK(ctx.prog_fd <= 0, "prog_fd", "fd = %d\n", ctx.prog_fd);
please use ASSERT_xxx() macros everywhere. I've just added
ASSERT_GT(), so once that patch set lands you should have all the
variants you need.
> + CHECK(memcmp(verifier_log, "processed", sizeof("processed") - 1) != 0,
> + "verifier_log", "%s\n", verifier_log);
> +
> + err = bpf_map_lookup_elem(ctx.map_fd, &key, &value);
> + CHECK(err, "map_lookup", "map_lookup failed\n");
> + CHECK(value != 34, "invalid_value",
> + "got value %llu expected %u\n", value, 34);
> +cleanup:
> + syscall__destroy(skel);
> +}
> diff --git a/tools/testing/selftests/bpf/progs/syscall.c b/tools/testing/selftests/bpf/progs/syscall.c
> new file mode 100644
> index 000000000000..01476f88e45f
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/syscall.c
> @@ -0,0 +1,73 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2021 Facebook */
> +#include <linux/stddef.h>
> +#include <linux/bpf.h>
> +#include <bpf/bpf_helpers.h>
> +#include <bpf/bpf_tracing.h>
> +#include <../../tools/include/linux/filter.h>
with TOOLSINCDIR shouldn't this be just <linux/fiter.h>?
> +
> +volatile const int workaround = 1;
not needed anymore?
> +
> +char _license[] SEC("license") = "GPL";
> +
> +struct args {
> + __u64 log_buf;
> + __u32 log_size;
> + int max_entries;
> + int map_fd;
> + int prog_fd;
> +};
> +
[...]
next prev parent reply other threads:[~2021-04-26 17:03 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-23 0:26 [PATCH v2 bpf-next 00/16] bpf: syscall program, FD array, loader program, light skeleton Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 01/16] bpf: Introduce bpf_sys_bpf() helper and program type Alexei Starovoitov
2021-04-23 18:15 ` Yonghong Song
2021-04-23 18:28 ` Alexei Starovoitov
2021-04-23 19:32 ` Yonghong Song
2021-04-26 16:51 ` Andrii Nakryiko
2021-04-27 18:45 ` John Fastabend
2021-04-23 0:26 ` [PATCH v2 bpf-next 02/16] bpf: Introduce bpfptr_t user/kernel pointer Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 03/16] bpf: Prepare bpf syscall to be used from kernel and user space Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 04/16] libbpf: Support for syscall program type Alexei Starovoitov
2021-04-26 22:24 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 05/16] selftests/bpf: Test " Alexei Starovoitov
2021-04-26 17:02 ` Andrii Nakryiko [this message]
2021-04-27 2:43 ` Alexei Starovoitov
2021-04-27 16:28 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 06/16] bpf: Make btf_load command to be bpfptr_t compatible Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 07/16] selftests/bpf: Test for btf_load command Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 08/16] bpf: Introduce fd_idx Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 09/16] libbpf: Support for fd_idx Alexei Starovoitov
2021-04-26 17:14 ` Andrii Nakryiko
2021-04-27 2:53 ` Alexei Starovoitov
2021-04-27 16:36 ` Andrii Nakryiko
2021-04-28 1:32 ` Alexei Starovoitov
2021-04-28 18:40 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 10/16] bpf: Add bpf_btf_find_by_name_kind() helper Alexei Starovoitov
2021-04-26 22:46 ` Andrii Nakryiko
2021-04-27 3:37 ` Alexei Starovoitov
2021-04-27 17:45 ` Andrii Nakryiko
2021-04-28 1:55 ` Alexei Starovoitov
2021-04-28 18:44 ` Andrii Nakryiko
2021-04-27 21:00 ` John Fastabend
2021-04-27 21:05 ` John Fastabend
2021-04-28 2:10 ` Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 11/16] bpf: Add bpf_sys_close() helper Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 12/16] libbpf: Change the order of data and text relocations Alexei Starovoitov
2021-04-26 17:29 ` Andrii Nakryiko
2021-04-27 3:00 ` Alexei Starovoitov
2021-04-27 16:47 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 13/16] libbpf: Add bpf_object pointer to kernel_supports() Alexei Starovoitov
2021-04-26 17:30 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 14/16] libbpf: Generate loader program out of BPF ELF file Alexei Starovoitov
2021-04-26 22:22 ` Andrii Nakryiko
2021-04-27 3:25 ` Alexei Starovoitov
2021-04-27 17:34 ` Andrii Nakryiko
2021-04-28 1:42 ` Alexei Starovoitov
2021-04-23 0:26 ` [PATCH v2 bpf-next 15/16] bpftool: Use syscall/loader program in "prog load" and "gen skeleton" command Alexei Starovoitov
2021-04-26 22:35 ` Andrii Nakryiko
2021-04-27 3:28 ` Alexei Starovoitov
2021-04-27 17:38 ` Andrii Nakryiko
2021-04-23 0:26 ` [PATCH v2 bpf-next 16/16] selftests/bpf: Convert few tests to light skeleton Alexei Starovoitov
2021-04-23 21:36 ` [PATCH v2 bpf-next 00/16] bpf: syscall program, FD array, loader program, " Yonghong Song
2021-04-23 23:16 ` Alexei Starovoitov
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