Commit dcf33b6f authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by Daniel Borkmann
Browse files

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: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210210033634.62081-8-alexei.starovoitov@gmail.com
parent 9ed9e9ba

tools/testing/selftests/bpf/prog_tests/recursion.c

+8 −0
Original line number Diff line number Diff line
@@ -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);

}