diff --git a/core/java/android/net/NetworkStats.java b/core/java/android/net/NetworkStats.java index edf9bc1c6b..4bcc245368 100644 --- a/core/java/android/net/NetworkStats.java +++ b/core/java/android/net/NetworkStats.java @@ -776,14 +776,19 @@ public class NetworkStats implements Parcelable { * packet needs to be subtracted from the root UID on the base interface both for tx * and rx traffic (http://b/12249687, http:/b/33681750). * + * As for eBPF, the per uid stats is collected by different hook, the rx packets on base + * interface will not be counted. Thus, the adjustment on root uid is only needed in tx + * direction. + * *

This method will behave fine if {@code stackedIfaces} is an non-synchronized but add-only * {@code ConcurrentHashMap} * @param baseTraffic Traffic on the base interfaces. Will be mutated. * @param stackedTraffic Stats with traffic stacked on top of our ifaces. Will also be mutated. * @param stackedIfaces Mapping ipv6if -> ipv4if interface where traffic is counted on both. + * @param useBpfStats True if eBPF is in use. */ public static void apply464xlatAdjustments(NetworkStats baseTraffic, - NetworkStats stackedTraffic, Map stackedIfaces) { + NetworkStats stackedTraffic, Map stackedIfaces, boolean useBpfStats) { // Total 464xlat traffic to subtract from uid 0 on all base interfaces. // stackedIfaces may grow afterwards, but NetworkStats will just be resized automatically. final NetworkStats adjustments = new NetworkStats(0, stackedIfaces.size()); @@ -802,15 +807,20 @@ public class NetworkStats implements Parcelable { continue; } // Subtract any 464lat traffic seen for the root UID on the current base interface. + // However, for eBPF, the per uid stats is collected by different hook, the rx packets + // on base interface will not be counted. Thus, the adjustment on root uid is only + // needed in tx direction. adjust.iface = baseIface; - adjust.rxBytes = -(entry.rxBytes + entry.rxPackets * IPV4V6_HEADER_DELTA); + if (!useBpfStats) { + adjust.rxBytes = -(entry.rxBytes + entry.rxPackets * IPV4V6_HEADER_DELTA); + adjust.rxPackets = -entry.rxPackets; + } adjust.txBytes = -(entry.txBytes + entry.txPackets * IPV4V6_HEADER_DELTA); - adjust.rxPackets = -entry.rxPackets; adjust.txPackets = -entry.txPackets; adjustments.combineValues(adjust); - // For 464xlat traffic, xt_qtaguid only counts the bytes of the native IPv4 packet sent - // on the stacked interface with prefix "v4-" and drops the IPv6 header size after + // For 464xlat traffic, per uid stats only counts the bytes of the native IPv4 packet + // sent on the stacked interface with prefix "v4-" and drops the IPv6 header size after // unwrapping. To account correctly for on-the-wire traffic, add the 20 additional bytes // difference for all packets (http://b/12249687, http:/b/33681750). entry.rxBytes += entry.rxPackets * IPV4V6_HEADER_DELTA; @@ -829,8 +839,8 @@ public class NetworkStats implements Parcelable { * base and stacked traffic. * @param stackedIfaces Mapping ipv6if -> ipv4if interface where traffic is counted on both. */ - public void apply464xlatAdjustments(Map stackedIfaces) { - apply464xlatAdjustments(this, this, stackedIfaces); + public void apply464xlatAdjustments(Map stackedIfaces, boolean useBpfStats) { + apply464xlatAdjustments(this, this, stackedIfaces, useBpfStats); } /** diff --git a/core/java/com/android/internal/net/NetworkStatsFactory.java b/core/java/com/android/internal/net/NetworkStatsFactory.java index c4d08c7dc5..b3cf389c1b 100644 --- a/core/java/com/android/internal/net/NetworkStatsFactory.java +++ b/core/java/com/android/internal/net/NetworkStatsFactory.java @@ -113,11 +113,12 @@ public class NetworkStatsFactory { /** * Applies 464xlat adjustments with ifaces noted with {@link #noteStackedIface(String, String)}. - * @see NetworkStats#apply464xlatAdjustments(NetworkStats, NetworkStats, Map) + * @see NetworkStats#apply464xlatAdjustments(NetworkStats, NetworkStats, Map, boolean) */ public static void apply464xlatAdjustments(NetworkStats baseTraffic, - NetworkStats stackedTraffic) { - NetworkStats.apply464xlatAdjustments(baseTraffic, stackedTraffic, sStackedIfaces); + NetworkStats stackedTraffic, boolean useBpfStats) { + NetworkStats.apply464xlatAdjustments(baseTraffic, stackedTraffic, sStackedIfaces, + useBpfStats); } @VisibleForTesting @@ -263,7 +264,7 @@ public class NetworkStatsFactory { // No locking here: apply464xlatAdjustments behaves fine with an add-only ConcurrentHashMap. // TODO: remove this and only apply adjustments in NetworkStatsService. - stats.apply464xlatAdjustments(sStackedIfaces); + stats.apply464xlatAdjustments(sStackedIfaces, mUseBpfStats); return stats; } diff --git a/core/jni/com_android_internal_net_NetworkStatsFactory.cpp b/core/jni/com_android_internal_net_NetworkStatsFactory.cpp index c15b7ee4fe..de3a78a61a 100644 --- a/core/jni/com_android_internal_net_NetworkStatsFactory.cpp +++ b/core/jni/com_android_internal_net_NetworkStatsFactory.cpp @@ -175,7 +175,7 @@ static int legacyReadNetworkStatsDetail(std::vector* lines, } } s.tag = rawTag >> 32; - if (limitTag != -1 && s.tag != limitTag) { + if (limitTag != -1 && s.tag != static_cast(limitTag)) { //ALOGI("skipping due to tag: %s", buffer); continue; } @@ -188,7 +188,7 @@ static int legacyReadNetworkStatsDetail(std::vector* lines, if (sscanf(pos, "%u %u %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64, &s.uid, &s.set, &s.rxBytes, &s.rxPackets, &s.txBytes, &s.txPackets) == 6) { - if (limitUid != -1 && limitUid != s.uid) { + if (limitUid != -1 && static_cast(limitUid) != s.uid) { //ALOGI("skipping due to uid: %s", buffer); continue; } diff --git a/services/core/java/com/android/server/net/NetworkStatsService.java b/services/core/java/com/android/server/net/NetworkStatsService.java index fec510f28a..17ab29d747 100644 --- a/services/core/java/com/android/server/net/NetworkStatsService.java +++ b/services/core/java/com/android/server/net/NetworkStatsService.java @@ -159,9 +159,11 @@ public class NetworkStatsService extends INetworkStatsService.Stub { static final boolean LOGD = Log.isLoggable(TAG, Log.DEBUG); static final boolean LOGV = Log.isLoggable(TAG, Log.VERBOSE); + // Perform polling and persist all (FLAG_PERSIST_ALL). private static final int MSG_PERFORM_POLL = 1; private static final int MSG_UPDATE_IFACES = 2; - private static final int MSG_REGISTER_GLOBAL_ALERT = 3; + // Perform polling, persist network, and register the global alert again. + private static final int MSG_PERFORM_POLL_REGISTER_ALERT = 3; /** Flags to control detail level of poll event. */ private static final int FLAG_PERSIST_NETWORK = 0x1; @@ -169,6 +171,14 @@ public class NetworkStatsService extends INetworkStatsService.Stub { private static final int FLAG_PERSIST_ALL = FLAG_PERSIST_NETWORK | FLAG_PERSIST_UID; private static final int FLAG_PERSIST_FORCE = 0x100; + /** + * When global alert quota is high, wait for this delay before processing each polling, + * and do not schedule further polls once there is already one queued. + * This avoids firing the global alert too often on devices with high transfer speeds and + * high quota. + */ + private static final int PERFORM_POLL_DELAY_MS = 1000; + private static final String TAG_NETSTATS_ERROR = "netstats_error"; private final Context mContext; @@ -916,7 +926,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub { } // Create baseline stats - mHandler.sendMessage(mHandler.obtainMessage(MSG_PERFORM_POLL, FLAG_PERSIST_ALL)); + mHandler.sendMessage(mHandler.obtainMessage(MSG_PERFORM_POLL)); return normalizedRequest; } @@ -1057,13 +1067,12 @@ public class NetworkStatsService extends INetworkStatsService.Stub { mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); if (LIMIT_GLOBAL_ALERT.equals(limitName)) { - // kick off background poll to collect network stats; UID stats - // are handled during normal polling interval. - final int flags = FLAG_PERSIST_NETWORK; - mHandler.obtainMessage(MSG_PERFORM_POLL, flags, 0).sendToTarget(); - - // re-arm global alert for next update - mHandler.obtainMessage(MSG_REGISTER_GLOBAL_ALERT).sendToTarget(); + // kick off background poll to collect network stats unless there is already + // such a call pending; UID stats are handled during normal polling interval. + if (!mHandler.hasMessages(MSG_PERFORM_POLL_REGISTER_ALERT)) { + mHandler.sendEmptyMessageDelayed(MSG_PERFORM_POLL_REGISTER_ALERT, + PERFORM_POLL_DELAY_MS); + } } } }; @@ -1613,7 +1622,8 @@ public class NetworkStatsService extends INetworkStatsService.Stub { // fold tethering stats and operations into uid snapshot final NetworkStats tetherSnapshot = getNetworkStatsTethering(STATS_PER_UID); tetherSnapshot.filter(UID_ALL, ifaces, TAG_ALL); - NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, tetherSnapshot); + NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, tetherSnapshot, + mUseBpfTrafficStats); uidSnapshot.combineAllValues(tetherSnapshot); final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService( @@ -1623,7 +1633,8 @@ public class NetworkStatsService extends INetworkStatsService.Stub { final NetworkStats vtStats = telephonyManager.getVtDataUsage(STATS_PER_UID); if (vtStats != null) { vtStats.filter(UID_ALL, ifaces, TAG_ALL); - NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, vtStats); + NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, vtStats, + mUseBpfTrafficStats); uidSnapshot.combineAllValues(vtStats); } @@ -1675,15 +1686,15 @@ public class NetworkStatsService extends INetworkStatsService.Stub { public boolean handleMessage(Message msg) { switch (msg.what) { case MSG_PERFORM_POLL: { - final int flags = msg.arg1; - mService.performPoll(flags); + mService.performPoll(FLAG_PERSIST_ALL); return true; } case MSG_UPDATE_IFACES: { mService.updateIfaces(null); return true; } - case MSG_REGISTER_GLOBAL_ALERT: { + case MSG_PERFORM_POLL_REGISTER_ALERT: { + mService.performPoll(FLAG_PERSIST_NETWORK); mService.registerGlobalAlert(); return true; }