LineageOS/android_packages_modules_Connectivity
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Added a virtual interface for Video Telephony call usage counting

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1. Added a virtual VT interface.
2. Qeury VT usage from telephony service.

bug: 20888836
Change-Id: I3df0c22922f8394554230b53f8ae091e17c95595
This commit is contained in:
Jack Yu
2016-06-22 11:35:10 -07:00
parent 55e82ab60f
commit e544a48eb2
1 changed files with 62 additions and 2 deletions
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64
services/core/java/com/android/server/net/NetworkStatsService.java
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@@ -31,6 +31,7 @@ import static android.net.NetworkStats.IFACE_ALL;
import static android.net.NetworkStats.SET_ALL;
import static android.net.NetworkStats.SET_DEFAULT;
import static android.net.NetworkStats.SET_FOREGROUND;
import static android.net.NetworkStats.TAG_ALL;
import static android.net.NetworkStats.TAG_NONE;
import static android.net.NetworkStats.UID_ALL;
import static android.net.NetworkTemplate.buildTemplateMobileWildcard;
@@ -79,6 +80,7 @@ import android.net.INetworkManagementEventObserver;
import android.net.INetworkStatsService;
import android.net.INetworkStatsSession;
import android.net.LinkProperties;
import android.net.NetworkCapabilities;
import android.net.NetworkIdentity;
import android.net.NetworkInfo;
import android.net.NetworkState;
@@ -178,6 +180,11 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
private static final String PREFIX_UID = "uid";
private static final String PREFIX_UID_TAG = "uid_tag";
/**
* Virtual network interface for video telephony. This is for VT data usage counting purpose.
*/
public static final String VT_INTERFACE = "vt_data0";
/**
* Settings that can be changed externally.
*/
@@ -967,6 +974,23 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
if (baseIface != null) {
findOrCreateNetworkIdentitySet(mActiveIfaces, baseIface).add(ident);
findOrCreateNetworkIdentitySet(mActiveUidIfaces, baseIface).add(ident);
// Build a separate virtual interface for VT (Video Telephony) data usage.
// Only do this when IMS is not metered, but VT is metered.
// If IMS is metered, then the IMS network usage has already included VT usage.
// VT is considered always metered in framework's layer. If VT is not metered
// per carrier's policy, modem will report 0 usage for VT calls.
if (state.networkCapabilities.hasCapability(
NetworkCapabilities.NET_CAPABILITY_IMS) && !ident.getMetered()) {
// Copy the identify from IMS one but mark it as metered.
NetworkIdentity vtIdent = new NetworkIdentity(ident.getType(),
ident.getSubType(), ident.getSubscriberId(), ident.getNetworkId(),
ident.getRoaming(), true);
findOrCreateNetworkIdentitySet(mActiveIfaces, VT_INTERFACE).add(vtIdent);
findOrCreateNetworkIdentitySet(mActiveUidIfaces, VT_INTERFACE).add(vtIdent);
}
if (isMobile) {
mobileIfaces.add(baseIface);
}
@@ -1004,9 +1028,9 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
private void recordSnapshotLocked(long currentTime) throws RemoteException {
// snapshot and record current counters; read UID stats first to
// avoid overcounting dev stats.
// avoid over counting dev stats.
final NetworkStats uidSnapshot = getNetworkStatsUidDetail();
final NetworkStats xtSnapshot = mNetworkManager.getNetworkStatsSummaryXt();
final NetworkStats xtSnapshot = getNetworkStatsXtAndVt();
final NetworkStats devSnapshot = mNetworkManager.getNetworkStatsSummaryDev();
@@ -1311,6 +1335,42 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
return uidSnapshot;
}
/**
* Return snapshot of current XT plus VT statistics.
*/
private NetworkStats getNetworkStatsXtAndVt() throws RemoteException {
final NetworkStats xtSnapshot = mNetworkManager.getNetworkStatsSummaryXt();
TelephonyManager tm = (TelephonyManager) mContext.getSystemService(
Context.TELEPHONY_SERVICE);
long usage = tm.getVtDataUsage();
if (LOGV) Slog.d(TAG, "VT call data usage = " + usage);
final NetworkStats vtSnapshot = new NetworkStats(SystemClock.elapsedRealtime(), 1);
final NetworkStats.Entry entry = new NetworkStats.Entry();
entry.iface = VT_INTERFACE;
entry.uid = -1;
entry.set = TAG_ALL;
entry.tag = TAG_NONE;
// Since modem only tell us the total usage instead of each usage for RX and TX,
// we need to split it up (though it might not quite accurate). At
// least we can make sure the data usage report to the user will still be accurate.
entry.rxBytes = usage / 2;
entry.rxPackets = 0;
entry.txBytes = usage - entry.rxBytes;
entry.txPackets = 0;
vtSnapshot.combineValues(entry);
// Merge VT int XT
xtSnapshot.combineAllValues(vtSnapshot);
return xtSnapshot;
}
/**
* Return snapshot of current tethering statistics. Will return empty
* {@link NetworkStats} if any problems are encountered.