From dcf33b6f4de173818540e3a2a0668c80a1ebdc68 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Tue, 9 Feb 2021 19:36:32 -0800 Subject: [PATCH] selftests/bpf: Improve recursion selftest 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 Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20210210033634.62081-8-alexei.starovoitov@gmail.com --- tools/testing/selftests/bpf/prog_tests/recursion.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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); }