Merge "Implement roaming tracking in NetworkStats summary queries."
diff --git a/core/tests/coretests/src/android/net/NetworkStatsTest.java b/core/tests/coretests/src/android/net/NetworkStatsTest.java
index a470de1..a723977 100644
--- a/core/tests/coretests/src/android/net/NetworkStatsTest.java
+++ b/core/tests/coretests/src/android/net/NetworkStatsTest.java
@@ -16,6 +16,9 @@
 
 package android.net;
 
+import static android.net.NetworkStats.ROAMING_ALL;
+import static android.net.NetworkStats.ROAMING_DEFAULT;
+import static android.net.NetworkStats.ROAMING_ROAMING;
 import static android.net.NetworkStats.SET_DEFAULT;
 import static android.net.NetworkStats.SET_FOREGROUND;
 import static android.net.NetworkStats.SET_DBG_VPN_IN;
@@ -42,62 +45,103 @@
     private static final long TEST_START = 1194220800000L;
 
     public void testFindIndex() throws Exception {
-        final NetworkStats stats = new NetworkStats(TEST_START, 3)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 11)
-                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12);
+        final NetworkStats stats = new NetworkStats(TEST_START, 4)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L, 0L,
+                        0L, 10)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 1024L,
+                        8L, 11)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                        1024L, 8L, 12)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 1024L, 8L,
+                        1024L, 8L, 12);
 
-        assertEquals(2, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE));
-        assertEquals(2, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE));
-        assertEquals(0, stats.findIndex(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE));
-        assertEquals(-1, stats.findIndex(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE));
+        assertEquals(3, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING));
+        assertEquals(2, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT));
+        assertEquals(1, stats.findIndex(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT));
+        assertEquals(0, stats.findIndex(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT));
+        assertEquals(-1, stats.findIndex(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT));
     }
 
     public void testFindIndexHinted() {
         final NetworkStats stats = new NetworkStats(TEST_START, 3)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 11)
-                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12)
-                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
-                .addValues(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D, 0L, 0L, 1024L, 8L, 11)
-                .addValues(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12);
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L, 0L,
+                        0L, 10)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 1024L,
+                        8L, 11)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                        1024L, 8L, 12)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                        0L, 0L, 10)
+                .addValues(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 0L, 0L, 1024L,
+                        8L, 11)
+                .addValues(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                        1024L, 8L, 12)
+                .addValues(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 1024L, 8L,
+                        1024L, 8L, 12);
 
         // verify that we correctly find across regardless of hinting
         for (int hint = 0; hint < stats.size(); hint++) {
-            assertEquals(0, stats.findIndexHinted(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, hint));
-            assertEquals(1, stats.findIndexHinted(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, hint));
-            assertEquals(2, stats.findIndexHinted(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, hint));
-            assertEquals(3, stats.findIndexHinted(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, hint));
-            assertEquals(4, stats.findIndexHinted(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D, hint));
-            assertEquals(5, stats.findIndexHinted(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, hint));
-            assertEquals(-1, stats.findIndexHinted(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE, hint));
+            assertEquals(0, stats.findIndexHinted(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(1, stats.findIndexHinted(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(2, stats.findIndexHinted(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(3, stats.findIndexHinted(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(4, stats.findIndexHinted(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(5, stats.findIndexHinted(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
+            assertEquals(6, stats.findIndexHinted(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE,
+                    ROAMING_ROAMING, hint));
+            assertEquals(-1, stats.findIndexHinted(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE,
+                    ROAMING_DEFAULT, hint));
         }
     }
 
     public void testAddEntryGrow() throws Exception {
-        final NetworkStats stats = new NetworkStats(TEST_START, 2);
+        final NetworkStats stats = new NetworkStats(TEST_START, 3);
 
         assertEquals(0, stats.size());
-        assertEquals(2, stats.internalSize());
+        assertEquals(3, stats.internalSize());
 
-        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 2L, 3);
-        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 2L, 2L, 2L, 2L, 4);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1L, 1L, 2L,
+                2L, 3);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 2L, 2L, 2L,
+                2L, 4);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 3L, 3L, 2L,
+                2L, 5);
 
-        assertEquals(2, stats.size());
-        assertEquals(2, stats.internalSize());
+        assertEquals(3, stats.size());
+        assertEquals(3, stats.internalSize());
 
-        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 3L, 30L, 4L, 40L, 7);
-        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 4L, 40L, 4L, 40L, 8);
-        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 5L, 50L, 5L, 50L, 10);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 4L, 40L, 4L,
+                40L, 7);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 5L, 50L, 4L,
+                40L, 8);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 6L, 60L, 5L,
+                50L, 10);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 7L, 70L, 5L,
+                50L, 11);
 
-        assertEquals(5, stats.size());
-        assertTrue(stats.internalSize() >= 5);
+        assertEquals(7, stats.size());
+        assertTrue(stats.internalSize() >= 7);
 
-        assertValues(stats, 0, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 2L, 3);
-        assertValues(stats, 1, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 2L, 2L, 2L, 2L, 4);
-        assertValues(stats, 2, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 3L, 30L, 4L, 40L, 7);
-        assertValues(stats, 3, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 4L, 40L, 4L, 40L, 8);
-        assertValues(stats, 4, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 5L, 50L, 5L, 50L, 10);
+        assertValues(stats, 0, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1L, 1L,
+                2L, 2L, 3);
+        assertValues(stats, 1, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 2L, 2L,
+                2L, 2L, 4);
+        assertValues(stats, 2, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 3L, 3L,
+                2L, 2L, 5);
+        assertValues(stats, 3, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 4L,
+                40L, 4L, 40L, 7);
+        assertValues(stats, 4, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 5L,
+                50L, 4L, 40L, 8);
+        assertValues(stats, 5, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 6L,
+                60L, 5L, 50L, 10);
+        assertValues(stats, 6, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 7L,
+                70L, 5L, 50L, 11);
     }
 
     public void testCombineExisting() throws Exception {
@@ -105,16 +149,23 @@
 
         stats.addValues(TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, 512L, 4L, 256L, 2L, 10);
         stats.addValues(TEST_IFACE, 1001, SET_DEFAULT, 0xff, 128L, 1L, 128L, 1L, 2);
-        stats.combineValues(TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, -128L, -1L, -128L, -1L, -1);
+        stats.combineValues(TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, -128L, -1L,
+                -128L, -1L, -1);
 
-        assertValues(stats, 0, TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, 384L, 3L, 128L, 1L, 9);
-        assertValues(stats, 1, TEST_IFACE, 1001, SET_DEFAULT, 0xff, 128L, 1L, 128L, 1L, 2);
+        assertValues(stats, 0, TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 384L, 3L,
+                128L, 1L, 9);
+        assertValues(stats, 1, TEST_IFACE, 1001, SET_DEFAULT, 0xff, ROAMING_DEFAULT, 128L, 1L, 128L,
+                1L, 2);
 
         // now try combining that should create row
-        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
-        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
-        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
-        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 256L, 2L, 256L, 2L, 6);
+        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L,
+                128L, 1L, 3);
+        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 1L,
+                128L, 1L, 3);
+        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L,
+                128L, 1L, 3);
+        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 256L, 2L,
+                256L, 2L, 6);
     }
 
     public void testSubtractIdenticalData() throws Exception {
@@ -129,8 +180,10 @@
         final NetworkStats result = after.subtract(before);
 
         // identical data should result in zero delta
-        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
-        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 0L,
+                0L, 0);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 0L,
+                0L, 0);
     }
 
     public void testSubtractIdenticalRows() throws Exception {
@@ -145,8 +198,10 @@
         final NetworkStats result = after.subtract(before);
 
         // expect delta between measurements
-        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 1L, 4);
-        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 3L, 1L, 4L, 1L, 8);
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1L, 1L, 2L,
+                1L, 4);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 3L, 1L, 4L,
+                1L, 8);
     }
 
     public void testSubtractNewRows() throws Exception {
@@ -162,9 +217,12 @@
         final NetworkStats result = after.subtract(before);
 
         // its okay to have new rows
-        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
-        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
-        assertValues(result, 2, TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 20);
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 0L,
+                0L, 0);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 0L, 0L, 0L,
+                0L, 0);
+        assertValues(result, 2, TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                1024L, 8L, 20);
     }
 
     public void testSubtractMissingRows() throws Exception {
@@ -179,7 +237,8 @@
 
         // should silently drop omitted rows
         assertEquals(1, result.size());
-        assertValues(result, 0, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 1L, 2L, 3L, 4L, 0);
+        assertValues(result, 0, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1L,
+                2L, 3L, 4L, 0);
         assertEquals(4L, result.getTotalBytes());
     }
 
@@ -195,7 +254,7 @@
                 .addValues(TEST_IFACE, 101, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
         assertEquals(96L, uidSet.getTotalBytes());
 
-        final NetworkStats uidTag = new NetworkStats(TEST_START, 3)
+        final NetworkStats uidTag = new NetworkStats(TEST_START, 6)
                 .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
                 .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
                 .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 8L, 0L, 0L, 0L, 0L)
@@ -203,6 +262,15 @@
                 .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
                 .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 8L, 0L, 0L, 0L, 0L);
         assertEquals(64L, uidTag.getTotalBytes());
+
+        final NetworkStats uidRoaming = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L, 0L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L, 0L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 32L, 0L, 0L, 0L,
+                        0L);
+        assertEquals(96L, uidRoaming.getTotalBytes());
     }
 
     public void testGroupedByIfaceEmpty() throws Exception {
@@ -215,62 +283,98 @@
 
     public void testGroupedByIfaceAll() throws Exception {
         final NetworkStats uidStats = new NetworkStats(TEST_START, 3)
-                .addValues(IFACE_ALL, 100, SET_ALL, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
-                .addValues(IFACE_ALL, 101, SET_FOREGROUND, TAG_NONE, 128L, 8L, 0L, 2L, 20L);
+                .addValues(IFACE_ALL, 100, SET_ALL, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L, 2L,
+                        20L)
+                .addValues(IFACE_ALL, 101, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L,
+                        2L, 20L)
+                .addValues(IFACE_ALL, 101, SET_ALL, TAG_NONE, ROAMING_ROAMING, 128L, 8L, 0L, 2L,
+                        20L);
         final NetworkStats grouped = uidStats.groupedByIface();
 
-        assertEquals(2, uidStats.size());
+        assertEquals(3, uidStats.size());
         assertEquals(1, grouped.size());
 
-        assertValues(grouped, 0, IFACE_ALL, UID_ALL, SET_ALL, TAG_NONE, 256L, 16L, 0L, 4L, 0L);
+        assertValues(grouped, 0, IFACE_ALL, UID_ALL, SET_ALL, TAG_NONE, ROAMING_ALL, 384L, 24L, 0L,
+                6L, 0L);
     }
 
     public void testGroupedByIface() throws Exception {
-        final NetworkStats uidStats = new NetworkStats(TEST_START, 3)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
-                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 64L, 4L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+        final NetworkStats uidStats = new NetworkStats(TEST_START, 7)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L,
+                        2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 512L, 32L, 0L,
+                        0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 64L, 4L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 512L, 32L,
+                        0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L,
+                        0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 128L, 8L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 128L, 8L, 0L,
+                        0L, 0L);
 
         final NetworkStats grouped = uidStats.groupedByIface();
 
-        assertEquals(6, uidStats.size());
+        assertEquals(7, uidStats.size());
 
         assertEquals(2, grouped.size());
-        assertValues(grouped, 0, TEST_IFACE, UID_ALL, SET_ALL, TAG_NONE, 256L, 16L, 0L, 2L, 0L);
-        assertValues(grouped, 1, TEST_IFACE2, UID_ALL, SET_ALL, TAG_NONE, 1024L, 64L, 0L, 0L, 0L);
+        assertValues(grouped, 0, TEST_IFACE, UID_ALL, SET_ALL, TAG_NONE, ROAMING_ALL, 384L, 24L, 0L,
+                2L, 0L);
+        assertValues(grouped, 1, TEST_IFACE2, UID_ALL, SET_ALL, TAG_NONE, ROAMING_ALL, 1024L, 64L,
+                0L, 0L, 0L);
     }
 
     public void testAddAllValues() {
         final NetworkStats first = new NetworkStats(TEST_START, 5)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L, 0L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 32L, 0L, 0L,
+                        0L, 0L)
+                .addValues(TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, ROAMING_ROAMING, 32L, 0L, 0L,
+                        0L, 0L);
 
         final NetworkStats second = new NetworkStats(TEST_START, 2)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L, 0L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L, 0L,
+                        0L, 0L, 0L)
+                .addValues(TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, ROAMING_ROAMING, 32L, 0L, 0L,
+                        0L, 0L);
 
         first.combineAllValues(second);
 
-        assertEquals(3, first.size());
-        assertValues(first, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 64L, 0L, 0L, 0L, 0L);
-        assertValues(first, 1, TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
-        assertValues(first, 2, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+        assertEquals(4, first.size());
+        assertValues(first, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 64L, 0L, 0L,
+                0L, 0L);
+        assertValues(first, 1, TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 32L, 0L,
+                0L, 0L, 0L);
+        assertValues(first, 2, TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, ROAMING_ROAMING, 64L, 0L,
+                0L, 0L, 0L);
+        assertValues(first, 3, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 32L,
+                0L, 0L, 0L, 0L);
     }
 
     public void testGetTotal() {
-        final NetworkStats stats = new NetworkStats(TEST_START, 3)
-                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
-                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 64L, 4L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L)
-                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+        final NetworkStats stats = new NetworkStats(TEST_START, 7)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L,
+                        2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 512L, 32L, 0L,
+                        0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 64L, 4L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 512L, 32L,
+                        0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 8L, 0L,
+                        0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 128L, 8L, 0L, 0L,
+                        0L)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 128L, 8L, 0L,
+                        0L, 0L);
 
-        assertValues(stats.getTotal(null), 1280L, 80L, 0L, 2L, 20L);
-        assertValues(stats.getTotal(null, 100), 1152L, 72L, 0L, 2L, 20L);
+        assertValues(stats.getTotal(null), 1408L, 88L, 0L, 2L, 20L);
+        assertValues(stats.getTotal(null, 100), 1280L, 80L, 0L, 2L, 20L);
         assertValues(stats.getTotal(null, 101), 128L, 8L, 0L, 0L, 0L);
 
         final HashSet<String> ifaces = Sets.newHashSet();
@@ -292,8 +396,10 @@
         final NetworkStats after = before.withoutUids(new int[] { 100 });
         assertEquals(6, before.size());
         assertEquals(2, after.size());
-        assertValues(after, 0, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L);
-        assertValues(after, 1, TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+        assertValues(after, 0, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 8L,
+                0L, 0L, 0L);
+        assertValues(after, 1, TEST_IFACE, 101, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 128L, 8L, 0L,
+                0L, 0L);
     }
 
     public void testClone() throws Exception {
@@ -351,76 +457,83 @@
         assertEquals(21, delta.size());
 
         // tunIface and TEST_IFACE entries are not changed.
-        assertValues(delta, 0, tunIface, 10100, SET_DEFAULT, TAG_NONE,
+        assertValues(delta, 0, tunIface, 10100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
                 39605L, 46L, 12259L, 55L, 0L);
-        assertValues(delta, 1, tunIface, 10100, SET_FOREGROUND, TAG_NONE, 0L, 0L, 0L, 0L, 0L);
-        assertValues(delta, 2, tunIface, 10120, SET_DEFAULT, TAG_NONE,
+        assertValues(delta, 1, tunIface, 10100, SET_FOREGROUND, TAG_NONE,  ROAMING_DEFAULT, 0L, 0L,
+                0L, 0L, 0L);
+        assertValues(delta, 2, tunIface, 10120, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
                 72667L, 197L, 43909L, 241L, 0L);
-        assertValues(delta, 3, tunIface, 10120, SET_FOREGROUND, TAG_NONE,
+        assertValues(delta, 3, tunIface, 10120, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT,
                 9297L, 17L, 4128L, 21L, 0L);
-        assertValues(delta, 4, tunIface, tunUid, SET_DEFAULT, TAG_NONE,
+        assertValues(delta, 4, tunIface, tunUid, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
                 4983L, 10L, 1801L, 12L, 0L);
-        assertValues(delta, 5, tunIface, tunUid, SET_FOREGROUND, TAG_NONE, 0L, 0L, 0L, 0L, 0L);
-        assertValues(delta, 6, tunIface, 10120, SET_DEFAULT, testTag1,
+        assertValues(delta, 5, tunIface, tunUid, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 0L, 0L,
+                0L, 0L, 0L);
+        assertValues(delta, 6, tunIface, 10120, SET_DEFAULT, testTag1, ROAMING_DEFAULT,
                 21691L, 41L, 13820L, 51L, 0L);
-        assertValues(delta, 7, tunIface, 10120, SET_FOREGROUND, testTag1, 1281L, 2L, 665L, 2L, 0L);
-        assertValues(delta, 8, TEST_IFACE, 10100, SET_DEFAULT, TAG_NONE, 1685L, 5L, 2070L, 6L, 0L);
+        assertValues(delta, 7, tunIface, 10120, SET_FOREGROUND, testTag1, ROAMING_DEFAULT, 1281L,
+                2L, 665L, 2L, 0L);
+        assertValues(delta, 8, TEST_IFACE, 10100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1685L, 5L,
+                2070L, 6L, 0L);
 
         // Existing underlying Iface entries are updated
-        assertValues(delta, 9, underlyingIface, 10100, SET_DEFAULT, TAG_NONE,
+        assertValues(delta, 9, underlyingIface, 10100, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
                 44783L, 54L, 13829L, 60L, 0L);
-        assertValues(delta, 10, underlyingIface, 10100, SET_FOREGROUND, TAG_NONE,
+        assertValues(delta, 10, underlyingIface, 10100, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT,
                 0L, 0L, 0L, 0L, 0L);
 
         // VPN underlying Iface entries are updated
-        assertValues(delta, 11, underlyingIface, tunUid, SET_DEFAULT, TAG_NONE,
+        assertValues(delta, 11, underlyingIface, tunUid, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
                 28304L, 27L, 1719L, 12L, 0L);
-        assertValues(delta, 12, underlyingIface, tunUid, SET_FOREGROUND, TAG_NONE,
+        assertValues(delta, 12, underlyingIface, tunUid, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT,
                 0L, 0L, 0L, 0L, 0L);
 
         // New entries are added for new application's underlying Iface traffic
-        assertContains(delta, underlyingIface, 10120, SET_DEFAULT, TAG_NONE,
-                72667L, 197L, 41872l, 219L, 0L);
-        assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, TAG_NONE,
+        assertContains(delta, underlyingIface, 10120, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT,
+                72667L, 197L, 41872L, 219L, 0L);
+        assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT,
                 9297L, 17L, 3936, 19L, 0L);
-        assertContains(delta, underlyingIface, 10120, SET_DEFAULT, testTag1,
+        assertContains(delta, underlyingIface, 10120, SET_DEFAULT, testTag1, ROAMING_DEFAULT,
                 21691L, 41L, 13179L, 46L, 0L);
-        assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, testTag1,
+        assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, testTag1, ROAMING_DEFAULT,
                 1281L, 2L, 634L, 1L, 0L);
 
         // New entries are added for debug purpose
-        assertContains(delta, underlyingIface, 10100, SET_DBG_VPN_IN, TAG_NONE,
+        assertContains(delta, underlyingIface, 10100, SET_DBG_VPN_IN, TAG_NONE, ROAMING_DEFAULT,
                 39605L, 46L, 11690, 49, 0);
-        assertContains(delta, underlyingIface, 10120, SET_DBG_VPN_IN, TAG_NONE,
+        assertContains(delta, underlyingIface, 10120, SET_DBG_VPN_IN, TAG_NONE, ROAMING_DEFAULT,
                 81964, 214, 45808, 238, 0);
-        assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_IN, TAG_NONE,
+        assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_IN, TAG_NONE, ROAMING_DEFAULT,
                 4983, 10, 1717, 10, 0);
-        assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_OUT, TAG_NONE,
+        assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_OUT, TAG_NONE, ROAMING_ALL,
                 126552, 270, 59215, 297, 0);
 
     }
 
     private static void assertContains(NetworkStats stats,  String iface, int uid, int set,
-            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, long operations) {
-        int index = stats.findIndex(iface, uid, set, tag);
+            int tag, int roaming, long rxBytes, long rxPackets, long txBytes, long txPackets,
+            long operations) {
+        int index = stats.findIndex(iface, uid, set, tag, roaming);
         assertTrue(index != -1);
-        assertValues(stats, index, iface, uid, set, tag,
+        assertValues(stats, index, iface, uid, set, tag, roaming,
                 rxBytes, rxPackets, txBytes, txPackets, operations);
     }
 
     private static void assertValues(NetworkStats stats, int index, String iface, int uid, int set,
-            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, long operations) {
+            int tag, int roaming, long rxBytes, long rxPackets, long txBytes, long txPackets,
+            long operations) {
         final NetworkStats.Entry entry = stats.getValues(index, null);
-        assertValues(entry, iface, uid, set, tag);
+        assertValues(entry, iface, uid, set, tag, roaming);
         assertValues(entry, rxBytes, rxPackets, txBytes, txPackets, operations);
     }
 
     private static void assertValues(
-            NetworkStats.Entry entry, String iface, int uid, int set, int tag) {
+            NetworkStats.Entry entry, String iface, int uid, int set, int tag, int roaming) {
         assertEquals(iface, entry.iface);
         assertEquals(uid, entry.uid);
         assertEquals(set, entry.set);
         assertEquals(tag, entry.tag);
+        assertEquals(roaming, entry.roaming);
     }
 
     private static void assertValues(NetworkStats.Entry entry, long rxBytes, long rxPackets,
diff --git a/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java b/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java
index d3dd01a..12a75b8 100644
--- a/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java
+++ b/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java
@@ -16,6 +16,7 @@
 
 package com.android.internal.net;
 
+import static android.net.NetworkStats.ROAMING_DEFAULT;
 import static android.net.NetworkStats.SET_ALL;
 import static android.net.NetworkStats.SET_DEFAULT;
 import static android.net.NetworkStats.SET_FOREGROUND;
@@ -156,7 +157,7 @@
 
     private static void assertStatsEntry(NetworkStats stats, String iface, int uid, int set,
             int tag, long rxBytes, long txBytes) {
-        final int i = stats.findIndex(iface, uid, set, tag);
+        final int i = stats.findIndex(iface, uid, set, tag, ROAMING_DEFAULT);
         final NetworkStats.Entry entry = stats.getValues(i, null);
         assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
         assertEquals("unexpected txBytes", txBytes, entry.txBytes);
@@ -164,7 +165,7 @@
 
     private static void assertStatsEntry(NetworkStats stats, String iface, int uid, int set,
             int tag, long rxBytes, long rxPackets, long txBytes, long txPackets) {
-        final int i = stats.findIndex(iface, uid, set, tag);
+        final int i = stats.findIndex(iface, uid, set, tag, ROAMING_DEFAULT);
         final NetworkStats.Entry entry = stats.getValues(i, null);
         assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
         assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
diff --git a/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
index 204bc2e..8cbd32d 100644
--- a/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
@@ -22,6 +22,9 @@
 import static android.net.ConnectivityManager.TYPE_WIFI;
 import static android.net.ConnectivityManager.TYPE_WIMAX;
 import static android.net.NetworkStats.IFACE_ALL;
+import static android.net.NetworkStats.ROAMING_ALL;
+import static android.net.NetworkStats.ROAMING_DEFAULT;
+import static android.net.NetworkStats.ROAMING_ROAMING;
 import static android.net.NetworkStats.SET_ALL;
 import static android.net.NetworkStats.SET_DEFAULT;
 import static android.net.NetworkStats.SET_FOREGROUND;
@@ -81,6 +84,8 @@
 import org.easymock.EasyMock;
 
 import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Tests for {@link NetworkStatsService}.
@@ -282,8 +287,9 @@
         // verify service recorded history
         assertNetworkTotal(sTemplateWifi, 1024L, 8L, 2048L, 16L, 0);
         assertUidTotal(sTemplateWifi, UID_RED, 1024L, 8L, 512L, 4L, 10);
-        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, 512L, 4L, 256L, 2L, 4);
-        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, 512L, 4L, 256L, 2L, 6);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, ROAMING_DEFAULT, 512L, 4L, 256L, 2L, 4);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, ROAMING_DEFAULT, 512L, 4L, 256L, 2L,
+                6);
         assertUidTotal(sTemplateWifi, UID_BLUE, 128L, 1L, 128L, 1L, 0);
         verifyAndReset();
 
@@ -317,8 +323,9 @@
         // after systemReady(), we should have historical stats loaded again
         assertNetworkTotal(sTemplateWifi, 1024L, 8L, 2048L, 16L, 0);
         assertUidTotal(sTemplateWifi, UID_RED, 1024L, 8L, 512L, 4L, 10);
-        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, 512L, 4L, 256L, 2L, 4);
-        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, 512L, 4L, 256L, 2L, 6);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, ROAMING_DEFAULT, 512L, 4L, 256L, 2L, 4);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, ROAMING_DEFAULT, 512L, 4L, 256L, 2L,
+                6);
         assertUidTotal(sTemplateWifi, UID_BLUE, 128L, 1L, 128L, 1L, 0);
         verifyAndReset();
 
@@ -670,16 +677,20 @@
         NetworkStats stats = mSession.getSummaryForAllUid(
                 sTemplateWifi, Long.MIN_VALUE, Long.MAX_VALUE, true);
         assertEquals(3, stats.size());
-        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, 50L, 5L, 50L, 5L, 1);
-        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, 10L, 1L, 10L, 1L, 1);
-        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, 2048L, 16L, 1024L, 8L, 0);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 50L, 5L,
+                50L, 5L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 10L, 1L, 10L,
+                1L, 1);
+        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 2048L, 16L,
+                1024L, 8L, 0);
 
         // now verify that recent history only contains one uid
         final long currentTime = currentTimeMillis();
         stats = mSession.getSummaryForAllUid(
                 sTemplateWifi, currentTime - HOUR_IN_MILLIS, currentTime, true);
         assertEquals(1, stats.size());
-        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, 1024L, 8L, 512L, 4L, 0);
+        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 1024L, 8L,
+                512L, 4L, 0);
 
         verifyAndReset();
     }
@@ -742,10 +753,61 @@
         final NetworkStats stats = mSession.getSummaryForAllUid(
                 sTemplateWifi, Long.MIN_VALUE, Long.MAX_VALUE, true);
         assertEquals(4, stats.size());
-        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, 128L, 2L, 128L, 2L, 1);
-        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, 64L, 1L, 64L, 1L, 1);
-        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, TAG_NONE, 32L, 2L, 32L, 2L, 1);
-        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, 0xFAAD, 1L, 1L, 1L, 1L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 2L,
+                128L, 2L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 64L, 1L, 64L,
+                1L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, TAG_NONE, ROAMING_DEFAULT, 32L, 2L,
+                32L, 2L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, 0xFAAD, ROAMING_DEFAULT, 1L, 1L, 1L,
+                1L, 1);
+
+        verifyAndReset();
+    }
+
+    public void testRoaming() throws Exception {
+        // pretend that network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_1, true /* isRoaming */));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+        expectBandwidthControlCheck();
+
+        replay();
+        mService.forceUpdateIfaces();
+        verifyAndReset();
+
+        // Create some traffic
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        // Note that all traffic from NetworkManagementService is tagged as ROAMING_DEFAULT, because
+        // roaming isn't tracked at that layer. We layer it on top by inspecting the iface
+        // properties.
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, 128L, 2L,
+                        128L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, ROAMING_DEFAULT, 64L, 1L, 64L,
+                        1L, 0L));
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertUidTotal(sTemplateImsi1, UID_RED, 128L, 2L, 128L, 2L, 0);
+
+        // verify entire history present
+        final NetworkStats stats = mSession.getSummaryForAllUid(
+                sTemplateImsi1, Long.MIN_VALUE, Long.MAX_VALUE, true);
+        assertEquals(2, stats.size());
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, ROAMING_ROAMING, 128L, 2L,
+                128L, 2L, 0);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, ROAMING_ROAMING, 64L, 1L, 64L,
+                1L, 0);
 
         verifyAndReset();
     }
@@ -805,17 +867,19 @@
 
         // verify summary API
         final NetworkStats stats = mSession.getSummaryForNetwork(template, start, end);
-        assertValues(stats, IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, rxBytes, rxPackets, txBytes,
-                txPackets, operations);
+        assertValues(stats, IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, ROAMING_DEFAULT, rxBytes,
+                rxPackets, txBytes, txPackets, operations);
     }
 
     private void assertUidTotal(NetworkTemplate template, int uid, long rxBytes, long rxPackets,
             long txBytes, long txPackets, int operations) throws Exception {
-        assertUidTotal(template, uid, SET_ALL, rxBytes, rxPackets, txBytes, txPackets, operations);
+        assertUidTotal(template, uid, SET_ALL, ROAMING_ALL, rxBytes, rxPackets, txBytes, txPackets,
+                operations);
     }
 
-    private void assertUidTotal(NetworkTemplate template, int uid, int set, long rxBytes,
-            long rxPackets, long txBytes, long txPackets, int operations) throws Exception {
+    private void assertUidTotal(NetworkTemplate template, int uid, int set, int roaming,
+            long rxBytes, long rxPackets, long txBytes, long txPackets, int operations)
+            throws Exception {
         // verify history API
         final NetworkStatsHistory history = mSession.getHistoryForUid(
                 template, uid, set, TAG_NONE, FIELD_ALL);
@@ -825,8 +889,8 @@
         // verify summary API
         final NetworkStats stats = mSession.getSummaryForAllUid(
                 template, Long.MIN_VALUE, Long.MAX_VALUE, false);
-        assertValues(stats, IFACE_ALL, uid, set, TAG_NONE, rxBytes, rxPackets, txBytes, txPackets,
-                operations);
+        assertValues(stats, IFACE_ALL, uid, set, TAG_NONE, roaming, rxBytes, rxPackets, txBytes,
+                txPackets, operations);
     }
 
     private void expectSystemReady() throws Exception {
@@ -933,18 +997,31 @@
     }
 
     private static void assertValues(NetworkStats stats, String iface, int uid, int set,
-            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, int operations) {
+            int tag, int roaming, long rxBytes, long rxPackets, long txBytes, long txPackets,
+            int operations) {
         final NetworkStats.Entry entry = new NetworkStats.Entry();
+        List<Integer> sets = new ArrayList<>();
         if (set == SET_DEFAULT || set == SET_ALL) {
-            final int i = stats.findIndex(iface, uid, SET_DEFAULT, tag);
-            if (i != -1) {
-                entry.add(stats.getValues(i, null));
-            }
+            sets.add(SET_DEFAULT);
         }
         if (set == SET_FOREGROUND || set == SET_ALL) {
-            final int i = stats.findIndex(iface, uid, SET_FOREGROUND, tag);
-            if (i != -1) {
-                entry.add(stats.getValues(i, null));
+            sets.add(SET_FOREGROUND);
+        }
+
+        List<Integer> roamings = new ArrayList<>();
+        if (roaming == ROAMING_DEFAULT || roaming == ROAMING_ALL) {
+            roamings.add(ROAMING_DEFAULT);
+        }
+        if (roaming == ROAMING_ROAMING || roaming == ROAMING_ALL) {
+            roamings.add(ROAMING_ROAMING);
+        }
+
+        for (int s : sets) {
+            for (int r : roamings) {
+                final int i = stats.findIndex(iface, uid, s, tag, r);
+                if (i != -1) {
+                    entry.add(stats.getValues(i, null));
+                }
             }
         }
 
@@ -974,9 +1051,14 @@
     }
 
     private static NetworkState buildMobile3gState(String subscriberId) {
+        return buildMobile3gState(subscriberId, false /* isRoaming */);
+    }
+
+    private static NetworkState buildMobile3gState(String subscriberId, boolean isRoaming) {
         final NetworkInfo info = new NetworkInfo(
                 TYPE_MOBILE, TelephonyManager.NETWORK_TYPE_UMTS, null, null);
         info.setDetailedState(DetailedState.CONNECTED, null, null);
+        info.setRoaming(isRoaming);
         final LinkProperties prop = new LinkProperties();
         prop.setInterfaceName(TEST_IFACE);
         return new NetworkState(info, prop, null, null, subscriberId, null);