diff mbox series

[v4,bpf-next,7/9] selftests/bpf: Improve recursion selftest

Message ID 20210210033634.62081-8-alexei.starovoitov@gmail.com (mailing list archive)
State Accepted
Commit dcf33b6f4de173818540e3a2a0668c80a1ebdc68
Delegated to: BPF
Headers show
Series bpf: Misc improvements | expand

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netdev/cc_maintainers warning 10 maintainers not CCed: shuah@kernel.org yhs@fb.com kafai@fb.com netdev@vger.kernel.org ast@kernel.org songliubraving@fb.com john.fastabend@gmail.com kpsingh@kernel.org linux-kselftest@vger.kernel.org andrii@kernel.org
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netdev/module_param success Was 0 now: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
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Commit Message

Alexei Starovoitov Feb. 10, 2021, 3:36 a.m. UTC 
From: Alexei Starovoitov <ast@kernel.org>

Since recursion_misses counter is available in bpf_prog_info
improve the selftest to make sure it's counting correctly.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
 tools/testing/selftests/bpf/prog_tests/recursion.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/recursion.c b/tools/testing/selftests/bpf/prog_tests/recursion.c
index 863757461e3f..0e378d63fe18 100644
--- a/tools/testing/selftests/bpf/prog_tests/recursion.c
+++ b/tools/testing/selftests/bpf/prog_tests/recursion.c
@@ -5,6 +5,8 @@ 
 
 void test_recursion(void)
 {
+	struct bpf_prog_info prog_info = {};
+	__u32 prog_info_len = sizeof(prog_info);
 	struct recursion *skel;
 	int key = 0;
 	int err;
@@ -28,6 +30,12 @@  void test_recursion(void)
 	ASSERT_EQ(skel->bss->pass2, 1, "pass2 == 1");
 	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash2), &key, 0);
 	ASSERT_EQ(skel->bss->pass2, 2, "pass2 == 2");
+
+	err = bpf_obj_get_info_by_fd(bpf_program__fd(skel->progs.on_lookup),
+				     &prog_info, &prog_info_len);
+	if (!ASSERT_OK(err, "get_prog_info"))
+		goto out;
+	ASSERT_EQ(prog_info.recursion_misses, 2, "recursion_misses");
 out:
 	recursion__destroy(skel);
 }