Merge "CTS for ingress rate limiting"
diff --git a/TEST_MAPPING b/TEST_MAPPING
index b1e6a9f..a5b97a1 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -19,6 +19,9 @@
       ]
     },
     {
+      "name": "bpf_existence_test"
+    },
+    {
       "name": "netd_updatable_unit_test"
     },
     {
@@ -41,10 +44,6 @@
     {
       "name": "TetheringPrivilegedTests"
     },
-    // TODO: move to presubmit when known green.
-    {
-      "name": "bpf_existence_test"
-    },
     {
       "name": "netd_updatable_unit_test",
       "keywords": ["netd-device-kernel-4.9", "netd-device-kernel-4.14"]
@@ -76,6 +75,9 @@
       ]
     },
     {
+      "name": "bpf_existence_test[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
+    },
+    {
       "name": "netd_updatable_unit_test[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     },
     {
@@ -128,10 +130,6 @@
     },
     {
       "name": "TetheringCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
-    },
-    // TODO: move to mainline-presubmit when known green.
-    {
-      "name": "bpf_existence_test[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     }
   ],
   "auto-postsubmit": [
diff --git a/service/jni/com_android_server_BpfNetMaps.cpp b/service/jni/com_android_server_BpfNetMaps.cpp
index 63961cb..f13c68d 100644
--- a/service/jni/com_android_server_BpfNetMaps.cpp
+++ b/service/jni/com_android_server_BpfNetMaps.cpp
@@ -109,6 +109,7 @@
     }
 
     size_t size = uids.size();
+    static_assert(sizeof(*(uids.get())) == sizeof(int32_t));
     std::vector<int32_t> data ((int32_t *)&uids[0], (int32_t*)&uids[size]);
     int res = mTc.replaceUidOwnerMap(chainName, isAllowlist, data);
     if (res) {
@@ -145,6 +146,7 @@
     }
 
     size_t size = uids.size();
+    static_assert(sizeof(*(uids.get())) == sizeof(int32_t));
     std::vector<int32_t> data ((int32_t *)&uids[0], (int32_t*)&uids[size]);
     Status status = mTc.addUidInterfaceRules(ifIndex, data);
     if (!isOk(status)) {
@@ -160,6 +162,7 @@
     }
 
     size_t size = uids.size();
+    static_assert(sizeof(*(uids.get())) == sizeof(int32_t));
     std::vector<int32_t> data ((int32_t *)&uids[0], (int32_t*)&uids[size]);
     Status status = mTc.removeUidInterfaceRules(data);
     if (!isOk(status)) {
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index 1b57c27..c90fcd5 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -3873,7 +3873,7 @@
             ConnectivityReportEvent reportEvent =
                     new ConnectivityReportEvent(p.timestampMillis, nai, extras);
             final Message m = mConnectivityDiagnosticsHandler.obtainMessage(
-                    ConnectivityDiagnosticsHandler.EVENT_NETWORK_TESTED, reportEvent);
+                    ConnectivityDiagnosticsHandler.CMD_SEND_CONNECTIVITY_REPORT, reportEvent);
             mConnectivityDiagnosticsHandler.sendMessage(m);
         }
 
@@ -9598,14 +9598,12 @@
 
         /**
          * Event for {@link NetworkStateTrackerHandler} to trigger ConnectivityReport callbacks
-         * after processing {@link #EVENT_NETWORK_TESTED} events.
+         * after processing {@link #CMD_SEND_CONNECTIVITY_REPORT} events.
          * obj = {@link ConnectivityReportEvent} representing ConnectivityReport info reported from
          * NetworkMonitor.
          * data = PersistableBundle of extras passed from NetworkMonitor.
-         *
-         * <p>See {@link ConnectivityService#EVENT_NETWORK_TESTED}.
          */
-        private static final int EVENT_NETWORK_TESTED = ConnectivityService.EVENT_NETWORK_TESTED;
+        private static final int CMD_SEND_CONNECTIVITY_REPORT = 3;
 
         /**
          * Event for NetworkMonitor to inform ConnectivityService that a potential data stall has
@@ -9643,7 +9641,7 @@
                             (IConnectivityDiagnosticsCallback) msg.obj, msg.arg1);
                     break;
                 }
-                case EVENT_NETWORK_TESTED: {
+                case CMD_SEND_CONNECTIVITY_REPORT: {
                     final ConnectivityReportEvent reportEvent =
                             (ConnectivityReportEvent) msg.obj;
 
@@ -10713,8 +10711,9 @@
 
         final String iface = networkAgent.linkProperties.getInterfaceName();
         if (iface == null) {
-            // This can never happen.
-            logwtf("canNetworkBeRateLimited: LinkProperties#getInterfaceName returns null");
+            // This may happen in tests, but if there is no interface then there is nothing that
+            // can be rate limited.
+            loge("canNetworkBeRateLimited: LinkProperties#getInterfaceName returns null");
             return false;
         }
         return true;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
index 5778b0d..7150918 100755
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
@@ -334,9 +334,8 @@
             @Nullable ProxyInfo proxyInfo,
             @Nullable ArrayList<Network> underlyingNetworks, boolean isAlwaysMetered)
             throws Exception {
-        startVpn(addresses, routes, new String[0] /* excludedRoutes */, allowedApplications,
-                disallowedApplications, proxyInfo, underlyingNetworks, isAlwaysMetered,
-                false /* addRoutesByIpPrefix */);
+        startVpn(addresses, routes, excludedRoutes, allowedApplications, disallowedApplications,
+                proxyInfo, underlyingNetworks, isAlwaysMetered, false /* addRoutesByIpPrefix */);
     }
 
     private void startVpn(
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index ac520d1..8f6ff19 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -2174,7 +2174,7 @@
     private void waitForAvailable(
             @NonNull final TestableNetworkCallback cb, @NonNull final Network expectedNetwork) {
         cb.expectAvailableCallbacks(expectedNetwork, false /* suspended */,
-                true /* validated */,
+                null /* validated */,
                 false /* blocked */, NETWORK_CALLBACK_TIMEOUT_MS);
     }
 
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index 34bcf3f..aa4e4bb 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -63,8 +63,10 @@
 
 import static com.android.net.module.util.NetworkStatsUtils.SUBSCRIBER_ID_MATCH_RULE_EXACT;
 import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_POLL;
+import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
@@ -77,6 +79,7 @@
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -101,13 +104,13 @@
 import android.net.UnderlyingNetworkInfo;
 import android.net.netstats.provider.INetworkStatsProviderCallback;
 import android.net.wifi.WifiInfo;
-import android.os.Build;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.IBinder;
 import android.os.PowerManager;
 import android.os.SimpleClock;
 import android.provider.Settings;
+import android.system.ErrnoException;
 import android.telephony.TelephonyManager;
 
 import androidx.annotation.Nullable;
@@ -125,6 +128,7 @@
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRunner;
 import com.android.testutils.HandlerUtils;
+import com.android.testutils.TestBpfMap;
 import com.android.testutils.TestableNetworkStatsProviderBinder;
 
 import libcore.testing.io.TestIoUtils;
@@ -143,6 +147,7 @@
 import java.time.ZoneOffset;
 import java.util.Objects;
 import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 /**
  * Tests for {@link NetworkStatsService}.
@@ -152,7 +157,8 @@
  */
 @RunWith(DevSdkIgnoreRunner.class)
 @SmallTest
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+// NetworkStatsService is not updatable before T, so tests do not need to be backwards compatible
+@DevSdkIgnoreRule.IgnoreUpTo(SC_V2)
 public class NetworkStatsServiceTest extends NetworkStatsBaseTest {
     private static final String TAG = "NetworkStatsServiceTest";
 
@@ -197,11 +203,16 @@
     private HandlerThread mHandlerThread;
     @Mock
     private LocationPermissionChecker mLocationPermissionChecker;
-    private @Mock IBpfMap<U32, U8> mUidCounterSetMap;
-    private @Mock IBpfMap<CookieTagMapKey, CookieTagMapValue> mCookieTagMap;
-    private @Mock IBpfMap<StatsMapKey, StatsMapValue> mStatsMapA;
-    private @Mock IBpfMap<StatsMapKey, StatsMapValue> mStatsMapB;
-    private @Mock IBpfMap<UidStatsMapKey, StatsMapValue> mAppUidStatsMap;
+    private TestBpfMap<U32, U8> mUidCounterSetMap = spy(new TestBpfMap<>(U32.class, U8.class));
+
+    private TestBpfMap<CookieTagMapKey, CookieTagMapValue> mCookieTagMap = new TestBpfMap<>(
+            CookieTagMapKey.class, CookieTagMapValue.class);
+    private TestBpfMap<StatsMapKey, StatsMapValue> mStatsMapA = new TestBpfMap<>(StatsMapKey.class,
+            StatsMapValue.class);
+    private TestBpfMap<StatsMapKey, StatsMapValue> mStatsMapB = new TestBpfMap<>(StatsMapKey.class,
+            StatsMapValue.class);
+    private TestBpfMap<UidStatsMapKey, StatsMapValue> mAppUidStatsMap = new TestBpfMap<>(
+            UidStatsMapKey.class, StatsMapValue.class);
 
     private NetworkStatsService mService;
     private INetworkStatsSession mSession;
@@ -1921,4 +1932,70 @@
     private void waitForIdle() {
         HandlerUtils.waitForIdle(mHandlerThread, WAIT_TIMEOUT);
     }
+
+    private boolean cookieTagMapContainsUid(int uid) throws ErrnoException {
+        final AtomicBoolean found = new AtomicBoolean();
+        mCookieTagMap.forEach((k, v) -> {
+            if (v.uid == uid) {
+                found.set(true);
+            }
+        });
+        return found.get();
+    }
+
+    private static <K extends StatsMapKey, V extends StatsMapValue> boolean statsMapContainsUid(
+            TestBpfMap<K, V> map, int uid) throws ErrnoException {
+        final AtomicBoolean found = new AtomicBoolean();
+        map.forEach((k, v) -> {
+            if (k.uid == uid) {
+                found.set(true);
+            }
+        });
+        return found.get();
+    }
+
+    private void initBpfMapsWithTagData(int uid) throws ErrnoException {
+        // key needs to be unique, use some offset from uid.
+        mCookieTagMap.insertEntry(new CookieTagMapKey(1000 + uid), new CookieTagMapValue(uid, 1));
+        mCookieTagMap.insertEntry(new CookieTagMapKey(2000 + uid), new CookieTagMapValue(uid, 2));
+
+        mStatsMapA.insertEntry(new StatsMapKey(uid, 1, 0, 10), new StatsMapValue(5, 5000, 3, 3000));
+        mStatsMapA.insertEntry(new StatsMapKey(uid, 2, 0, 10), new StatsMapValue(5, 5000, 3, 3000));
+
+        mStatsMapB.insertEntry(new StatsMapKey(uid, 1, 0, 10), new StatsMapValue(0, 0, 0, 0));
+
+        mAppUidStatsMap.insertEntry(new UidStatsMapKey(uid), new StatsMapValue(10, 10000, 6, 6000));
+
+        mUidCounterSetMap.insertEntry(new U32(uid), new U8((short) 1));
+
+        assertTrue(cookieTagMapContainsUid(uid));
+        assertTrue(statsMapContainsUid(mStatsMapA, uid));
+        assertTrue(statsMapContainsUid(mStatsMapB, uid));
+        assertTrue(mAppUidStatsMap.containsKey(new UidStatsMapKey(uid)));
+        assertTrue(mUidCounterSetMap.containsKey(new U32(uid)));
+    }
+
+    @Test
+    public void testRemovingUidRemovesTagDataForUid() throws ErrnoException {
+        initBpfMapsWithTagData(UID_BLUE);
+        initBpfMapsWithTagData(UID_RED);
+
+        final Intent intent = new Intent(ACTION_UID_REMOVED);
+        intent.putExtra(EXTRA_UID, UID_BLUE);
+        mServiceContext.sendBroadcast(intent);
+
+        // assert that all UID_BLUE related tag data has been removed from the maps.
+        assertFalse(cookieTagMapContainsUid(UID_BLUE));
+        assertFalse(statsMapContainsUid(mStatsMapA, UID_BLUE));
+        assertFalse(statsMapContainsUid(mStatsMapB, UID_BLUE));
+        assertFalse(mAppUidStatsMap.containsKey(new UidStatsMapKey(UID_BLUE)));
+        assertFalse(mUidCounterSetMap.containsKey(new U32(UID_BLUE)));
+
+        // assert that UID_RED related tag data is still in the maps.
+        assertTrue(cookieTagMapContainsUid(UID_RED));
+        assertTrue(statsMapContainsUid(mStatsMapA, UID_RED));
+        assertTrue(statsMapContainsUid(mStatsMapB, UID_RED));
+        assertTrue(mAppUidStatsMap.containsKey(new UidStatsMapKey(UID_RED)));
+        assertTrue(mUidCounterSetMap.containsKey(new U32(UID_RED)));
+    }
 }