netdev - [PATCH v8 bpf-next 13/13] selftests/bpf: Add set test to resolve

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Date:   Wed, 22 Jul 2020 23:12:23 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Martin KaFai Lau <kafai@...com>,
        David Miller <davem@...hat.com>,
        John Fastabend <john.fastabend@...il.com>,
        Wenbo Zhang <ethercflow@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Brendan Gregg <bgregg@...flix.com>,
        Florent Revest <revest@...omium.org>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH v8 bpf-next 13/13] selftests/bpf: Add set test to resolve_btfids

Adding test to for sets resolve_btfids. We're checking that
testing set gets properly resolved and sorted.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 .../selftests/bpf/prog_tests/resolve_btfids.c | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
index 101785b49f7e..cc90aa244285 100644
--- a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
+++ b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
@@ -48,6 +48,15 @@ BTF_ID(struct,  S)
 BTF_ID(union,   U)
 BTF_ID(func,    func)
 
+BTF_SET_START(test_set)
+BTF_ID(typedef, S)
+BTF_ID(typedef, T)
+BTF_ID(typedef, U)
+BTF_ID(struct,  S)
+BTF_ID(union,   U)
+BTF_ID(func,    func)
+BTF_SET_END(test_set)
+
 static int
 __resolve_symbol(struct btf *btf, int type_id)
 {
@@ -126,5 +135,29 @@ int test_resolve_btfids(void)
 		}
 	}
 
+	/* Check BTF_SET_START(test_set) IDs */
+	for (i = 0; i < test_set.cnt && !ret; i++) {
+		bool found = false;
+
+		for (j = 0; j < ARRAY_SIZE(test_symbols); j++) {
+			if (test_symbols[j].id != test_set.ids[i])
+				continue;
+			found = true;
+			break;
+		}
+
+		ret = CHECK(!found, "id_check",
+			    "ID %d for %s not found in test_symbols\n",
+			    test_symbols[j].id, test_symbols[j].name);
+		if (ret)
+			break;
+
+		if (i > 0) {
+			ret = CHECK(test_set.ids[i - 1] > test_set.ids[i],
+				    "sort_check",
+				    "test_set is not sorted\n");
+		}
+	}
+
 	return ret;
 }
-- 
2.25.4