From: Jiri Olsa <jolsa@kernel.org>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andriin@fb.com>
Cc: netdev@vger.kernel.org, bpf@vger.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@chromium.org>,
"Toke Høiland-Jørgensen" <toke@redhat.com>
Subject: [PATCHv2 bpf-next 3/5] selftests/bpf: Add re-attach test to fexit_test
Date: Tue, 6 Apr 2021 23:29:11 +0200 [thread overview]
Message-ID: <20210406212913.970917-4-jolsa@kernel.org> (raw)
In-Reply-To: <20210406212913.970917-1-jolsa@kernel.org>
Adding the test to re-attach (detach/attach again) tracing
fexit programs, plus check that already linked program can't
be attached again.
Fixing the number of check-ed results, which should be 8.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
.../selftests/bpf/prog_tests/fexit_test.c | 48 +++++++++++++++----
1 file changed, 38 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_test.c b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
index 78d7a2765c27..579e620e6612 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
@@ -3,20 +3,24 @@
#include <test_progs.h>
#include "fexit_test.skel.h"
-void test_fexit_test(void)
+static __u32 duration;
+
+static int fexit_test(struct fexit_test *fexit_skel)
{
- struct fexit_test *fexit_skel = NULL;
+ struct bpf_link *link;
int err, prog_fd, i;
- __u32 duration = 0, retval;
__u64 *result;
-
- fexit_skel = fexit_test__open_and_load();
- if (CHECK(!fexit_skel, "fexit_skel_load", "fexit skeleton failed\n"))
- goto cleanup;
+ __u32 retval;
err = fexit_test__attach(fexit_skel);
if (CHECK(err, "fexit_attach", "fexit attach failed: %d\n", err))
- goto cleanup;
+ return err;
+
+ /* Check that already linked program can't be attached again. */
+ link = bpf_program__attach(fexit_skel->progs.test1);
+ if (CHECK(!IS_ERR(link), "fexit_attach_link",
+ "re-attach without detach should not succeed"))
+ return -1;
prog_fd = bpf_program__fd(fexit_skel->progs.test1);
err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
@@ -26,12 +30,36 @@ void test_fexit_test(void)
err, errno, retval, duration);
result = (__u64 *)fexit_skel->bss;
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < 8; i++) {
if (CHECK(result[i] != 1, "result",
"fexit_test%d failed err %lld\n", i + 1, result[i]))
- goto cleanup;
+ return -1;
}
+ fexit_test__detach(fexit_skel);
+
+ /* zero results for re-attach test */
+ for (i = 0; i < 8; i++)
+ result[i] = 0;
+ return 0;
+}
+
+void test_fexit_test(void)
+{
+ struct fexit_test *fexit_skel = NULL;
+ int err;
+
+ fexit_skel = fexit_test__open_and_load();
+ if (CHECK(!fexit_skel, "fexit_skel_load", "fexit skeleton failed\n"))
+ goto cleanup;
+
+ err = fexit_test(fexit_skel);
+ if (CHECK(err, "fexit_test", "first attach failed\n"))
+ goto cleanup;
+
+ err = fexit_test(fexit_skel);
+ CHECK(err, "fexit_test", "second attach failed\n");
+
cleanup:
fexit_test__destroy(fexit_skel);
}
--
2.30.2
next prev parent reply other threads:[~2021-04-06 21:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 21:29 [PATCHv2 bpf-next 0/5] bpf: Tracing and lsm programs re-attach Jiri Olsa
2021-04-06 21:29 ` [PATCHv2 bpf-next 1/5] bpf: Allow trampoline re-attach for tracing and lsm programs Jiri Olsa
2021-04-06 21:35 ` Toke Høiland-Jørgensen
2021-04-06 21:29 ` [PATCHv2 bpf-next 2/5] selftests/bpf: Add re-attach test to fentry_test Jiri Olsa
2021-04-07 22:47 ` Andrii Nakryiko
2021-04-08 11:52 ` Jiri Olsa
2021-04-06 21:29 ` Jiri Olsa [this message]
2021-04-07 22:51 ` [PATCHv2 bpf-next 3/5] selftests/bpf: Add re-attach test to fexit_test Andrii Nakryiko
2021-04-08 11:51 ` Jiri Olsa
2021-04-06 21:29 ` [PATCHv2 bpf-next 4/5] selftests/bpf: Add re-attach test to lsm test Jiri Olsa
2021-04-06 21:29 ` [PATCHv2 bpf-next 5/5] selftests/bpf: Test that module can't be unloaded with attached trampoline Jiri Olsa
2021-04-07 23:04 ` Andrii Nakryiko
2021-04-08 11:59 ` Jiri Olsa
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