add test for /system/etc/bpf/{netd,clatd}.o using correct struct sizes am: cba9f66098

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/15217930

Change-Id: If33f5d605a5bc6fea760e5c42de74f91a4a21375

tests/cts/net/native/Android.bp

@@ -31,14 +31,19 @@ cc_test {
         },
     },
 
-    srcs: ["src/NativeQtaguidTest.cpp"],
+    srcs: [
+        "src/BpfCompatTest.cpp",
+        "src/NativeQtaguidTest.cpp",
+    ],
 
     shared_libs: [
-        "libutils",
+        "libbase",
         "liblog",
+        "libutils",
     ],
 
     static_libs: [
+        "libbpf_android",
         "libgtest",
         "libqtaguid",
     ],

tests/cts/net/native/src/BpfCompatTest.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless requied by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#define LOG_TAG "BpfCompatTest"
+
+#include <fstream>
+
+#include <gtest/gtest.h>
+
+#include "libbpf_android.h"
+
+using namespace android::bpf;
+
+namespace android {
+
+void doBpfStructSizeTest(const char *elfPath) {
+  std::ifstream elfFile(elfPath, std::ios::in | std::ios::binary);
+  ASSERT_TRUE(elfFile.is_open());
+
+  EXPECT_EQ(48, readSectionUint("size_of_bpf_map_def", elfFile, 0));
+  EXPECT_EQ(28, readSectionUint("size_of_bpf_prog_def", elfFile, 0));
+}
+
+TEST(BpfTest, bpfStructSizeTest) {
+  doBpfStructSizeTest("/system/etc/bpf/netd.o");
+  doBpfStructSizeTest("/system/etc/bpf/clatd.o");
+}
+
+}  // namespace android