netdev - [PATCH bpf-next 07/10] selftests/bpf: extend test_section_names with type_(from|to)

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Date:   Wed, 28 Aug 2019 14:03:10 -0700
From:   Julia Kartseva <hex@...com>
To:     <rdna@...com>, <bpf@...r.kernel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <netdev@...r.kernel.org>,
        <kernel-team@...com>
CC:     Julia Kartseva <hex@...com>
Subject: [PATCH bpf-next 07/10] selftests/bpf: extend test_section_names with type_(from|to)_str

Test bpf enum stringification helpers:
libbpf_(prog|map|attach)_type_(from|to)_str

Signed-off-by: Julia Kartseva <hex@...com>
---
 .../selftests/bpf/test_section_names.c        | 149 +++++++++++++++++-
 1 file changed, 147 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_section_names.c b/tools/testing/selftests/bpf/test_section_names.c
index 29833aeaf0de..564585a07592 100644
--- a/tools/testing/selftests/bpf/test_section_names.c
+++ b/tools/testing/selftests/bpf/test_section_names.c
@@ -202,7 +202,137 @@ static int test_attach_type_by_name(const struct sec_name_test *test)
 	return 0;
 }
 
-static int run_test_case(const struct sec_name_test *test)
+static int test_prog_type_from_to_str(void)
+{
+	enum bpf_prog_type type, actual_type;
+	const char *str;
+	int rc;
+
+	for (type = BPF_PROG_TYPE_UNSPEC; type < __MAX_BPF_PROG_TYPE; type++) {
+		rc = libbpf_prog_type_to_str(type, &str);
+		if (rc) {
+			warnx("prog_type_to_str: unexpected rc=%d for type %d",
+			      rc, type);
+			return rc;
+		}
+
+		rc = libbpf_prog_type_from_str(str, &actual_type);
+		if (rc) {
+			warnx("prog_type_from_str: unexpected rc=%d for str %s",
+			      rc, str);
+			return rc;
+		}
+
+		if (actual_type != type) {
+			warnx("prog: unexpected prog_type for str %s, %d != %d",
+			      str, actual_type, type);
+			return -EINVAL;
+		}
+	}
+
+	rc = libbpf_prog_type_to_str(__MAX_BPF_PROG_TYPE, &str);
+	if (!rc) {
+		warnx("prog: unexpected result for __MAX_BPF_PROG_TYPE");
+		return -EINVAL;
+	}
+
+	rc = libbpf_prog_type_from_str("NonExistent", &type);
+	if (!rc) {
+		warnx("prog: unexpected result for non existent key");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int test_map_type_from_to_str(void)
+{
+	enum bpf_map_type type, actual_type;
+	const char *str;
+	int rc;
+
+	for (type = BPF_MAP_TYPE_UNSPEC; type < __MAX_BPF_MAP_TYPE; type++) {
+		rc = libbpf_map_type_to_str(type, &str);
+		if (rc) {
+			warnx("map_type_to_str: unexpected rc=%d for type %d",
+			      rc, type);
+			return rc;
+		}
+
+		rc = libbpf_map_type_from_str(str, &actual_type);
+		if (rc) {
+			warnx("map_type_from_str: unexpected rc=%d for str %s",
+			      rc, str);
+			return rc;
+		}
+
+		if (actual_type != type) {
+			warnx("map: unexpected map_type for str %s, %d != %d",
+			      str, actual_type, type);
+			return -EINVAL;
+		}
+	}
+
+	rc = libbpf_map_type_to_str(__MAX_BPF_MAP_TYPE, &str);
+	if (!rc) {
+		warnx("map: unexpected result for __MAX_BPF_MAP_TYPE");
+		return -EINVAL;
+	}
+
+	rc = libbpf_map_type_from_str("NonExistent", &type);
+	if (!rc) {
+		warnx("map: unexpected result for non existent key");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int test_attach_type_from_to_str(void)
+{
+	enum bpf_attach_type type, actual_type;
+	const char *str;
+	int rc;
+
+	for (type = BPF_CGROUP_INET_INGRESS; type < __MAX_BPF_ATTACH_TYPE;
+	     type++) {
+		rc = libbpf_attach_type_to_str(type, &str);
+		if (rc) {
+			warnx("attach: unexpected rc=%d for type %d",
+			      rc, type);
+			return rc;
+		}
+
+		rc = libbpf_attach_type_from_str(str, &actual_type);
+		if (rc) {
+			warnx("attach: unexpected rc=%d for str %s",
+			      rc, str);
+			return rc;
+		}
+
+		if (actual_type != type) {
+			warnx("attach: unexpected type for str %s, %d != %d",
+			      str, actual_type, type);
+			return -EINVAL;
+		}
+	}
+
+	rc = libbpf_attach_type_to_str(__MAX_BPF_ATTACH_TYPE, &str);
+	if (!rc) {
+		warnx("attach: unexpected result for __MAX_BPF_ATTACH_TYPE");
+		return -EINVAL;
+	}
+
+	rc = libbpf_attach_type_from_str("NonExistent", &type);
+	if (!rc) {
+		warnx("attach: unexpected result for non existent key");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int run_sec_name_test_case(const struct sec_name_test *test)
 {
 	if (test_prog_type_by_name(test))
 		return -1;
@@ -218,11 +348,26 @@ static int run_tests(void)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(tests); ++i) {
-		if (run_test_case(&tests[i]))
+		if (run_sec_name_test_case(&tests[i]))
 			++fails;
 		else
 			++passes;
 	}
+
+	if (test_prog_type_from_to_str())
+		++fails;
+	else
+		++passes;
+
+	if (test_map_type_from_to_str())
+		++fails;
+	else
+		++passes;
+
+	if (test_attach_type_from_to_str())
+		++fails;
+	else
+		++passes;
 	printf("Summary: %d PASSED, %d FAILED\n", passes, fails);
 	return fails ? -1 : 0;
 }
-- 
2.17.1