Commit d77efc0e authored by Tao Chen's avatar Tao Chen Committed by Andrii Nakryiko
Browse files

selftests/bpf: Add cookies check for tracing fill_link_info test 



Adding tests for getting cookie with fill_link_info for tracing.

Signed-off-by: default avatarTao Chen <chen.dylane@linux.dev>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250606165818.3394397-2-chen.dylane@linux.dev
parent c7beb483

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

+23 −1
Original line number Diff line number Diff line
@@ -489,10 +489,28 @@ static void pe_subtest(struct test_bpf_cookie *skel) 
	bpf_link__destroy(link);

}



static int verify_tracing_link_info(int fd, u64 cookie)

{

	struct bpf_link_info info;

	int err;

	u32 len = sizeof(info);



	err = bpf_link_get_info_by_fd(fd, &info, &len);

	if (!ASSERT_OK(err, "get_link_info"))

		return -1;



	if (!ASSERT_EQ(info.type, BPF_LINK_TYPE_TRACING, "link_type"))

		return -1;



	ASSERT_EQ(info.tracing.cookie, cookie, "tracing_cookie");



	return 0;

}



static void tracing_subtest(struct test_bpf_cookie *skel)

{

	__u64 cookie;

	int prog_fd;

	int prog_fd, err;

	int fentry_fd = -1, fexit_fd = -1, fmod_ret_fd = -1;

	LIBBPF_OPTS(bpf_test_run_opts, opts);

	LIBBPF_OPTS(bpf_link_create_opts, link_opts);
@@ -507,6 +525,10 @@ static void tracing_subtest(struct test_bpf_cookie *skel) 
	if (!ASSERT_GE(fentry_fd, 0, "fentry.link_create"))

		goto cleanup;



	err = verify_tracing_link_info(fentry_fd, cookie);

	if (!ASSERT_OK(err, "verify_tracing_link_info"))

		goto cleanup;



	cookie = 0x20000000000000L;

	prog_fd = bpf_program__fd(skel->progs.fexit_test1);

	link_opts.tracing.cookie = cookie;