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Merge "Return stats from inactive ifaces, packet counts."

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This commit is contained in:
Jeff Sharkey
2011-07-12 11:09:09 -07:00
committed by Android (Google) Code Review
parent eb982f3991 fd8be3e5e7
commit 1ea4cc6464
5 changed files with 290 additions and 63 deletions
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135
core/java/android/net/NetworkStats.java
View File

@@ -43,17 +43,41 @@ public class NetworkStats implements Parcelable {
/** {@link #tag} value for without tag. */
public static final int TAG_NONE = 0;
// TODO: move public fields to Entry accessors, then undeprecate
// TODO: refactor rx/tx to rxBytes/txBytes
/**
* {@link SystemClock#elapsedRealtime()} timestamp when this data was
* generated.
*/
@Deprecated
public final long elapsedRealtime;
@Deprecated
public int size;
@Deprecated
public String[] iface;
@Deprecated
public int[] uid;
@Deprecated
public int[] tag;
@Deprecated
public long[] rx;
@Deprecated
public long[] rxPackets;
@Deprecated
public long[] tx;
@Deprecated
public long[] txPackets;
public static class Entry {
public String iface;
public int uid;
public int tag;
public long rxBytes;
public long rxPackets;
public long txBytes;
public long txPackets;
}
public NetworkStats(long elapsedRealtime, int initialSize) {
this.elapsedRealtime = elapsedRealtime;
@@ -62,7 +86,9 @@ public class NetworkStats implements Parcelable {
this.uid = new int[initialSize];
this.tag = new int[initialSize];
this.rx = new long[initialSize];
this.rxPackets = new long[initialSize];
this.tx = new long[initialSize];
this.txPackets = new long[initialSize];
}
public NetworkStats(Parcel parcel) {
@@ -72,38 +98,82 @@ public class NetworkStats implements Parcelable {
uid = parcel.createIntArray();
tag = parcel.createIntArray();
rx = parcel.createLongArray();
rxPackets = parcel.createLongArray();
tx = parcel.createLongArray();
txPackets = parcel.createLongArray();
}
/**
* Add new stats entry with given values.
*/
public NetworkStats addEntry(String iface, int uid, int tag, long rx, long tx) {
final Entry entry = new Entry();
entry.iface = iface;
entry.uid = uid;
entry.tag = tag;
entry.rxBytes = rx;
entry.txBytes = tx;
return addValues(entry);
}
/**
* Add new stats entry, copying from given {@link Entry}. The {@link Entry}
* object can be recycled across multiple calls.
*/
public NetworkStats addValues(Entry entry) {
if (size >= this.iface.length) {
final int newLength = Math.max(this.iface.length, 10) * 3 / 2;
this.iface = Arrays.copyOf(this.iface, newLength);
this.uid = Arrays.copyOf(this.uid, newLength);
this.tag = Arrays.copyOf(this.tag, newLength);
this.rx = Arrays.copyOf(this.rx, newLength);
this.tx = Arrays.copyOf(this.tx, newLength);
final int newLength = Math.max(iface.length, 10) * 3 / 2;
iface = Arrays.copyOf(iface, newLength);
uid = Arrays.copyOf(uid, newLength);
tag = Arrays.copyOf(tag, newLength);
rx = Arrays.copyOf(rx, newLength);
rxPackets = Arrays.copyOf(rxPackets, newLength);
tx = Arrays.copyOf(tx, newLength);
txPackets = Arrays.copyOf(txPackets, newLength);
}
this.iface[size] = iface;
this.uid[size] = uid;
this.tag[size] = tag;
this.rx[size] = rx;
this.tx[size] = tx;
iface[size] = entry.iface;
uid[size] = entry.uid;
tag[size] = entry.tag;
rx[size] = entry.rxBytes;
rxPackets[size] = entry.rxPackets;
tx[size] = entry.txBytes;
txPackets[size] = entry.txPackets;
size++;
return this;
}
/**
* Return specific stats entry.
*/
public Entry getValues(int i, Entry recycle) {
final Entry entry = recycle != null ? recycle : new Entry();
entry.iface = iface[i];
entry.uid = uid[i];
entry.tag = tag[i];
entry.rxBytes = rx[i];
entry.rxPackets = rxPackets[i];
entry.txBytes = tx[i];
entry.txPackets = txPackets[i];
return entry;
}
public long getElapsedRealtime() {
return elapsedRealtime;
}
public int size() {
return size;
}
/**
* Combine given values with an existing row, or create a new row if
* {@link #findIndex(String, int, int)} is unable to find match. Can also be
* used to subtract values from existing rows.
*/
public NetworkStats combineEntry(String iface, int uid, int tag, long rx, long tx) {
// TODO: extent to accept rxPackets/txPackets
final int i = findIndex(iface, uid, tag);
if (i == -1) {
// only create new entry when positive contribution
@@ -199,30 +269,41 @@ public class NetworkStats implements Parcelable {
}
// result will have our rows, and elapsed time between snapshots
final Entry entry = new Entry();
final NetworkStats result = new NetworkStats(deltaRealtime, size);
for (int i = 0; i < size; i++) {
final String iface = this.iface[i];
final int uid = this.uid[i];
final int tag = this.tag[i];
entry.iface = iface[i];
entry.uid = uid[i];
entry.tag = tag[i];
// find remote row that matches, and subtract
final int j = value.findIndex(iface, uid, tag);
final int j = value.findIndex(entry.iface, entry.uid, entry.tag);
if (j == -1) {
// newly appearing row, return entire value
result.addEntry(iface, uid, tag, this.rx[i], this.tx[i]);
entry.rxBytes = rx[i];
entry.rxPackets = rxPackets[i];
entry.txBytes = tx[i];
entry.txPackets = txPackets[i];
} else {
// existing row, subtract remote value
long rx = this.rx[i] - value.rx[j];
long tx = this.tx[i] - value.tx[j];
if (enforceMonotonic && (rx < 0 || tx < 0)) {
entry.rxBytes = rx[i] - value.rx[j];
entry.rxPackets = rxPackets[i] - value.rxPackets[j];
entry.txBytes = tx[i] - value.tx[j];
entry.txPackets = txPackets[i] - value.txPackets[j];
if (enforceMonotonic
&& (entry.rxBytes < 0 || entry.rxPackets < 0 || entry.txBytes < 0
|| entry.txPackets < 0)) {
throw new IllegalArgumentException("found non-monotonic values");
}
if (clampNegative) {
rx = Math.max(0, rx);
tx = Math.max(0, tx);
entry.rxBytes = Math.max(0, entry.rxBytes);
entry.rxPackets = Math.max(0, entry.rxPackets);
entry.txBytes = Math.max(0, entry.txBytes);
entry.txPackets = Math.max(0, entry.txPackets);
}
result.addEntry(iface, uid, tag, rx, tx);
}
result.addValues(entry);
}
return result;
@@ -235,13 +316,15 @@ public class NetworkStats implements Parcelable {
public void dump(String prefix, PrintWriter pw) {
pw.print(prefix);
pw.print("NetworkStats: elapsedRealtime="); pw.println(elapsedRealtime);
for (int i = 0; i < iface.length; i++) {
for (int i = 0; i < size; i++) {
pw.print(prefix);
pw.print(" iface="); pw.print(iface[i]);
pw.print(" uid="); pw.print(uid[i]);
pw.print(" tag="); pw.print(tag[i]);
pw.print(" rx="); pw.print(rx[i]);
pw.print(" tx="); pw.println(tx[i]);
pw.print(" rxBytes="); pw.print(rx[i]);
pw.print(" rxPackets="); pw.print(rxPackets[i]);
pw.print(" txBytes="); pw.print(tx[i]);
pw.print(" txPackets="); pw.println(txPackets[i]);
}
}
@@ -265,7 +348,9 @@ public class NetworkStats implements Parcelable {
dest.writeIntArray(uid);
dest.writeIntArray(tag);
dest.writeLongArray(rx);
dest.writeLongArray(rxPackets);
dest.writeLongArray(tx);
dest.writeLongArray(txPackets);
}
public static final Creator<NetworkStats> CREATOR = new Creator<NetworkStats>() {

6
core/tests/coretests/src/android/net/NetworkStatsTest.java
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@@ -44,20 +44,20 @@ public class NetworkStatsTest extends TestCase {
public void testAddEntryGrow() throws Exception {
final NetworkStats stats = new NetworkStats(TEST_START, 2);
assertEquals(0, stats.size);
assertEquals(0, stats.size());
assertEquals(2, stats.iface.length);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 1L, 2L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 2L, 2L);
assertEquals(2, stats.size);
assertEquals(2, stats.size());
assertEquals(2, stats.iface.length);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 3L, 4L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 4L, 4L);
stats.addEntry(TEST_IFACE, TEST_UID, TAG_NONE, 5L, 5L);
assertEquals(5, stats.size);
assertEquals(5, stats.size());
assertTrue(stats.iface.length >= 5);
assertEquals(1L, stats.rx[0]);

138
services/java/com/android/server/NetworkManagementService.java
View File

@@ -77,11 +77,15 @@ class NetworkManagementService extends INetworkManagementService.Stub {
/** Path to {@code /proc/uid_stat}. */
@Deprecated
private final File mProcStatsUidstat;
private final File mStatsUid;
/** Path to {@code /proc/net/dev}. */
private final File mStatsIface;
/** Path to {@code /proc/net/xt_qtaguid/stats}. */
private final File mProcStatsNetfilter;
private final File mStatsXtUid;
/** Path to {@code /proc/net/xt_qtaguid/iface_stat}. */
private final File mStatsXtIface;
/** {@link #mProcStatsNetfilter} headers. */
/** {@link #mStatsXtUid} headers. */
private static final String KEY_IFACE = "iface";
private static final String KEY_TAG_HEX = "acct_tag_hex";
private static final String KEY_UID = "uid_tag_int";
@@ -137,8 +141,10 @@ class NetworkManagementService extends INetworkManagementService.Stub {
mContext = context;
mObservers = new ArrayList<INetworkManagementEventObserver>();
mProcStatsUidstat = new File(procRoot, "uid_stat");
mProcStatsNetfilter = new File(procRoot, "net/xt_qtaguid/stats");
mStatsUid = new File(procRoot, "uid_stat");
mStatsIface = new File(procRoot, "net/dev");
mStatsXtUid = new File(procRoot, "net/xt_qtaguid/stats");
mStatsXtIface = new File(procRoot, "net/xt_qtaguid/iface_stat");
if ("simulator".equals(SystemProperties.get("ro.product.device"))) {
return;
@@ -161,9 +167,12 @@ class NetworkManagementService extends INetworkManagementService.Stub {
}
// @VisibleForTesting
public static NetworkManagementService createForTest(Context context, File procRoot) {
public static NetworkManagementService createForTest(
Context context, File procRoot, boolean bandwidthControlEnabled) {
// TODO: eventually connect with mock netd
return new NetworkManagementService(context, procRoot);
final NetworkManagementService service = new NetworkManagementService(context, procRoot);
service.mBandwidthControlEnabled = bandwidthControlEnabled;
return service;
}
public void systemReady() {
@@ -930,13 +939,68 @@ class NetworkManagementService extends INetworkManagementService.Stub {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService");
final String[] ifaces = listInterfaces();
final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(), ifaces.length);
final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(), 6);
final NetworkStats.Entry entry = new NetworkStats.Entry();
for (String iface : ifaces) {
final long rx = getInterfaceCounter(iface, true);
final long tx = getInterfaceCounter(iface, false);
stats.addEntry(iface, UID_ALL, TAG_NONE, rx, tx);
final HashSet<String> activeIfaces = Sets.newHashSet();
final ArrayList<String> values = Lists.newArrayList();
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(mStatsIface));
// skip first two header lines
reader.readLine();
reader.readLine();
// parse remaining lines
String line;
while ((line = reader.readLine()) != null) {
splitLine(line, values);
try {
entry.iface = values.get(0);
entry.uid = UID_ALL;
entry.tag = TAG_NONE;
entry.rxBytes = Long.parseLong(values.get(1));
entry.rxPackets = Long.parseLong(values.get(2));
entry.txBytes = Long.parseLong(values.get(9));
entry.txPackets = Long.parseLong(values.get(10));
activeIfaces.add(entry.iface);
stats.addValues(entry);
} catch (NumberFormatException e) {
Slog.w(TAG, "problem parsing stats row '" + line + "': " + e);
}
}
} catch (IOException e) {
Slog.w(TAG, "problem parsing stats: " + e);
} finally {
IoUtils.closeQuietly(reader);
}
if (DBG) Slog.d(TAG, "recorded active stats from " + activeIfaces);
// splice in stats from any disabled ifaces
if (mBandwidthControlEnabled) {
final HashSet<String> xtIfaces = Sets.newHashSet(fileListWithoutNull(mStatsXtIface));
xtIfaces.removeAll(activeIfaces);
for (String iface : xtIfaces) {
final File ifacePath = new File(mStatsXtIface, iface);
entry.iface = iface;
entry.uid = UID_ALL;
entry.tag = TAG_NONE;
entry.rxBytes = readSingleLongFromFile(new File(ifacePath, "rx_bytes"));
entry.rxPackets = readSingleLongFromFile(new File(ifacePath, "rx_packets"));
entry.txBytes = readSingleLongFromFile(new File(ifacePath, "tx_bytes"));
entry.txPackets = readSingleLongFromFile(new File(ifacePath, "tx_packets"));
stats.addValues(entry);
}
if (DBG) Slog.d(TAG, "recorded stale stats from " + xtIfaces);
}
return stats;
@@ -1063,13 +1127,15 @@ class NetworkManagementService extends INetworkManagementService.Stub {
*/
private NetworkStats getNetworkStatsDetailNetfilter(int limitUid) {
final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(), 24);
final NetworkStats.Entry entry = new NetworkStats.Entry();
final ArrayList<String> keys = Lists.newArrayList();
final ArrayList<String> values = Lists.newArrayList();
final HashMap<String, String> parsed = Maps.newHashMap();
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(mProcStatsNetfilter));
reader = new BufferedReader(new FileReader(mStatsXtUid));
// parse first line as header
String line = reader.readLine();
@@ -1081,15 +1147,16 @@ class NetworkManagementService extends INetworkManagementService.Stub {
parseLine(keys, values, parsed);
try {
final String iface = parsed.get(KEY_IFACE);
final int tag = NetworkManagementSocketTagger.kernelToTag(
// TODO: add rxPackets/txPackets once kernel exports
entry.iface = parsed.get(KEY_IFACE);
entry.tag = NetworkManagementSocketTagger.kernelToTag(
parsed.get(KEY_TAG_HEX));
final int uid = Integer.parseInt(parsed.get(KEY_UID));
final long rx = Long.parseLong(parsed.get(KEY_RX));
final long tx = Long.parseLong(parsed.get(KEY_TX));
entry.uid = Integer.parseInt(parsed.get(KEY_UID));
entry.rxBytes = Long.parseLong(parsed.get(KEY_RX));
entry.txBytes = Long.parseLong(parsed.get(KEY_TX));
if (limitUid == UID_ALL || limitUid == uid) {
stats.addEntry(iface, uid, tag, rx, tx);
if (limitUid == UID_ALL || limitUid == entry.uid) {
stats.addValues(entry);
}
} catch (NumberFormatException e) {
Slog.w(TAG, "problem parsing stats row '" + line + "': " + e);
@@ -1114,19 +1181,27 @@ class NetworkManagementService extends INetworkManagementService.Stub {
private NetworkStats getNetworkStatsDetailUidstat(int limitUid) {
final String[] knownUids;
if (limitUid == UID_ALL) {
knownUids = mProcStatsUidstat.list();
knownUids = fileListWithoutNull(mStatsUid);
} else {
knownUids = new String[] { String.valueOf(limitUid) };
}
final NetworkStats stats = new NetworkStats(
SystemClock.elapsedRealtime(), knownUids.length);
final NetworkStats.Entry entry = new NetworkStats.Entry();
for (String uid : knownUids) {
final int uidInt = Integer.parseInt(uid);
final File uidPath = new File(mProcStatsUidstat, uid);
final long rx = readSingleLongFromFile(new File(uidPath, "tcp_rcv"));
final long tx = readSingleLongFromFile(new File(uidPath, "tcp_snd"));
stats.addEntry(IFACE_ALL, uidInt, TAG_NONE, rx, tx);
final File uidPath = new File(mStatsUid, uid);
entry.iface = IFACE_ALL;
entry.uid = uidInt;
entry.tag = TAG_NONE;
entry.rxBytes = readSingleLongFromFile(new File(uidPath, "tcp_rcv"));
entry.rxPackets = readSingleLongFromFile(new File(uidPath, "tcp_rcv_pkt"));
entry.txBytes = readSingleLongFromFile(new File(uidPath, "tcp_snd"));
entry.txPackets = readSingleLongFromFile(new File(uidPath, "tcp_snd_pkt"));
stats.addValues(entry);
}
return stats;
@@ -1197,7 +1272,7 @@ class NetworkManagementService extends INetworkManagementService.Stub {
private static void splitLine(String line, ArrayList<String> outSplit) {
outSplit.clear();
final StringTokenizer t = new StringTokenizer(line);
final StringTokenizer t = new StringTokenizer(line, " \t\n\r\f:");
while (t.hasMoreTokens()) {
outSplit.add(t.nextToken());
}
@@ -1232,6 +1307,15 @@ class NetworkManagementService extends INetworkManagementService.Stub {
}
}
/**
* Wrapper for {@link File#list()} that returns empty array instead of
* {@code null}.
*/
private static String[] fileListWithoutNull(File file) {
final String[] list = file.list();
return list != null ? list : new String[0];
}
public void setDefaultInterfaceForDns(String iface) throws IllegalStateException {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService");

8
services/tests/servicestests/res/raw/net_dev_typical Normal file
View File

@@ -0,0 +1,8 @@
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 8308 116 0 0 0 0 0 0 8308 116 0 0 0 0 0 0
rmnet0: 1507570 2205 0 0 0 0 0 0 489339 2237 0 0 0 0 0 0
ifb0: 52454 151 0 151 0 0 0 0 0 0 0 0 0 0 0 0
ifb1: 52454 151 0 151 0 0 0 0 0 0 0 0 0 0 0 0
sit0: 0 0 0 0 0 0 0 0 0 0 148 0 0 0 0 0
ip6tnl0: 0 0 0 0 0 0 0 0 0 0 151 151 0 0 0 0

66
services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
View File

@@ -16,6 +16,8 @@
package com.android.server;
import static android.net.NetworkStats.TAG_NONE;
import static android.net.NetworkStats.UID_ALL;
import static com.android.server.NetworkManagementSocketTagger.kernelToTag;
import static com.android.server.NetworkManagementSocketTagger.tagToKernel;
@@ -25,9 +27,11 @@ import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.LargeTest;
import com.android.frameworks.servicestests.R;
import com.google.common.io.Files;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.OutputStream;
@@ -46,14 +50,23 @@ public class NetworkManagementServiceTest extends AndroidTestCase {
public void setUp() throws Exception {
super.setUp();
mTestProc = getContext().getFilesDir();
mService = NetworkManagementService.createForTest(mContext, mTestProc);
final File canonicalFilesDir = getContext().getFilesDir().getCanonicalFile();
mTestProc = new File(canonicalFilesDir, "proc");
if (mTestProc.exists()) {
Files.deleteRecursively(mTestProc);
}
mService = NetworkManagementService.createForTest(mContext, mTestProc, true);
}
@Override
public void tearDown() throws Exception {
mService = null;
if (mTestProc.exists()) {
Files.deleteRecursively(mTestProc);
}
super.tearDown();
}
@@ -61,7 +74,7 @@ public class NetworkManagementServiceTest extends AndroidTestCase {
stageFile(R.raw.xt_qtaguid_typical, new File(mTestProc, "net/xt_qtaguid/stats"));
final NetworkStats stats = mService.getNetworkStatsDetail();
assertEquals(31, stats.size);
assertEquals(31, stats.size());
assertStatsEntry(stats, "wlan0", 0, 0, 14615L, 4270L);
assertStatsEntry(stats, "wlan0", 10004, 0, 333821L, 53558L);
assertStatsEntry(stats, "wlan0", 10004, 1947740890, 18725L, 1066L);
@@ -73,11 +86,37 @@ public class NetworkManagementServiceTest extends AndroidTestCase {
stageFile(R.raw.xt_qtaguid_extended, new File(mTestProc, "net/xt_qtaguid/stats"));
final NetworkStats stats = mService.getNetworkStatsDetail();
assertEquals(2, stats.size);
assertEquals(2, stats.size());
assertStatsEntry(stats, "test0", 1000, 0, 1024L, 2048L);
assertStatsEntry(stats, "test0", 1000, 0xF00D, 512L, 512L);
}
public void testNetworkStatsSummary() throws Exception {
stageFile(R.raw.net_dev_typical, new File(mTestProc, "net/dev"));
final NetworkStats stats = mService.getNetworkStatsSummary();
assertEquals(6, stats.size());
assertStatsEntry(stats, "lo", UID_ALL, TAG_NONE, 8308L, 8308L);
assertStatsEntry(stats, "rmnet0", UID_ALL, TAG_NONE, 1507570L, 489339L);
assertStatsEntry(stats, "ifb0", UID_ALL, TAG_NONE, 52454L, 0L);
assertStatsEntry(stats, "ifb1", UID_ALL, TAG_NONE, 52454L, 0L);
assertStatsEntry(stats, "sit0", UID_ALL, TAG_NONE, 0L, 0L);
assertStatsEntry(stats, "ip6tnl0", UID_ALL, TAG_NONE, 0L, 0L);
}
public void testNetworkStatsSummaryDown() throws Exception {
stageFile(R.raw.net_dev_typical, new File(mTestProc, "net/dev"));
stageLong(1024L, new File(mTestProc, "net/xt_qtaguid/iface_stat/wlan0/rx_bytes"));
stageLong(128L, new File(mTestProc, "net/xt_qtaguid/iface_stat/wlan0/rx_packets"));
stageLong(2048L, new File(mTestProc, "net/xt_qtaguid/iface_stat/wlan0/tx_bytes"));
stageLong(256L, new File(mTestProc, "net/xt_qtaguid/iface_stat/wlan0/tx_packets"));
final NetworkStats stats = mService.getNetworkStatsSummary();
assertEquals(7, stats.size());
assertStatsEntry(stats, "rmnet0", UID_ALL, TAG_NONE, 1507570L, 489339L);
assertStatsEntry(stats, "wlan0", UID_ALL, TAG_NONE, 1024L, 2048L);
}
public void testKernelTags() throws Exception {
assertEquals("0", tagToKernel(0x0));
assertEquals("214748364800", tagToKernel(0x32));
@@ -90,7 +129,6 @@ public class NetworkManagementServiceTest extends AndroidTestCase {
assertEquals(2147483647, kernelToTag("0x7fffffff00000000"));
assertEquals(0, kernelToTag("0x0000000000000000"));
assertEquals(2147483136, kernelToTag("0x7FFFFE0000000000"));
}
/**
@@ -111,11 +149,23 @@ public class NetworkManagementServiceTest extends AndroidTestCase {
}
}
private void stageLong(long value, File file) throws Exception {
new File(file.getParent()).mkdirs();
FileWriter out = null;
try {
out = new FileWriter(file);
out.write(Long.toString(value));
} finally {
IoUtils.closeQuietly(out);
}
}
private static void assertStatsEntry(
NetworkStats stats, String iface, int uid, int tag, long rx, long tx) {
NetworkStats stats, String iface, int uid, int tag, long rxBytes, long txBytes) {
final int i = stats.findIndex(iface, uid, tag);
assertEquals(rx, stats.rx[i]);
assertEquals(tx, stats.tx[i]);
final NetworkStats.Entry entry = stats.getValues(i, null);
assertEquals(rxBytes, entry.rxBytes);
assertEquals(txBytes, entry.txBytes);
}
}