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Commit 9802c1ae authored by Nucca Chen's avatar Nucca Chen Committed by Automerger Merge Worker
Browse files

[BOT.8] Dump BPF offload information in dumpsys am: 1f9efaff am: 288269fe 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11882881

Change-Id: I896fbd7a99c9bea96157837bb89328aa956d15d6
parents 92317855 288269fe

packages/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java

+73 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ import android.net.ip.IpServer; 
import android.net.netstats.provider.NetworkStatsProvider;

import android.net.util.SharedLog;

import android.net.util.TetheringUtils.ForwardedStats;

import android.os.ConditionVariable;

import android.os.Handler;

import android.os.RemoteException;

import android.os.ServiceSpecificException;
@@ -47,11 +48,13 @@ import androidx.annotation.NonNull; 
import androidx.annotation.Nullable;



import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.util.IndentingPrintWriter;



import java.net.Inet6Address;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.Map;

import java.util.Objects;



/**
@@ -65,6 +68,7 @@ import java.util.Objects; 
 */

public class BpfCoordinator {

    private static final String TAG = BpfCoordinator.class.getSimpleName();

    private static final int DUMP_TIMEOUT_MS = 10_000;

    @VisibleForTesting

    static final int DEFAULT_PERFORM_POLL_INTERVAL_MS = 5000; // TODO: Make it customizable.
@@ -344,6 +348,75 @@ public class BpfCoordinator { 
        }

    }



    /**

     * Dump information.

     * Block the function until all the data are dumped on the handler thread or timed-out. The

     * reason is that dumpsys invokes this function on the thread of caller and the data may only

     * be allowed to be accessed on the handler thread.

     */

    public void dump(@NonNull IndentingPrintWriter pw) {

        final ConditionVariable dumpDone = new ConditionVariable();

        mHandler.post(() -> {

            pw.println("Polling " + (mPollingStarted ? "started" : "not started"));

            pw.println("Stats provider " + (mStatsProvider != null

                    ? "registered" : "not registered"));

            pw.println("Upstream quota: " + mInterfaceQuotas.toString());



            pw.println("Forwarding stats:");

            pw.increaseIndent();

            if (mStats.size() == 0) {

                pw.println("<empty>");

            } else {

                dumpStats(pw);

            }

            pw.decreaseIndent();



            pw.println("Forwarding rules:");

            pw.increaseIndent();

            if (mIpv6ForwardingRules.size() == 0) {

                pw.println("<empty>");

            } else {

                dumpIpv6ForwardingRules(pw);

            }

            pw.decreaseIndent();



            dumpDone.open();

        });

        if (!dumpDone.block(DUMP_TIMEOUT_MS)) {

            pw.println("... dump timed-out after " + DUMP_TIMEOUT_MS + "ms");

        }

    }



    private void dumpStats(@NonNull IndentingPrintWriter pw) {

        for (int i = 0; i < mStats.size(); i++) {

            final int upstreamIfindex = mStats.keyAt(i);

            final ForwardedStats stats = mStats.get(upstreamIfindex);

            pw.println(String.format("%d(%s) - %s", upstreamIfindex, mInterfaceNames.get(

                    upstreamIfindex), stats.toString()));

        }

    }



    private void dumpIpv6ForwardingRules(@NonNull IndentingPrintWriter pw) {

        for (Map.Entry<IpServer, LinkedHashMap<Inet6Address, Ipv6ForwardingRule>> entry :

                mIpv6ForwardingRules.entrySet()) {

            IpServer ipServer = entry.getKey();

            // The rule downstream interface index is paired with the interface name from

            // IpServer#interfaceName. See #startIPv6, #updateIpv6ForwardingRules in IpServer.

            final String downstreamIface = ipServer.interfaceName();

            pw.println("[" + downstreamIface + "]: iif(iface) oif(iface) v6addr srcmac dstmac");



            pw.increaseIndent();

            LinkedHashMap<Inet6Address, Ipv6ForwardingRule> rules = entry.getValue();

            for (Ipv6ForwardingRule rule : rules.values()) {

                final int upstreamIfindex = rule.upstreamIfindex;

                pw.println(String.format("%d(%s) %d(%s) %s %s %s", upstreamIfindex,

                        mInterfaceNames.get(upstreamIfindex), rule.downstreamIfindex,

                        downstreamIface, rule.address, rule.srcMac, rule.dstMac));

            }

            pw.decreaseIndent();

        }

    }



    /** IPv6 forwarding rule class. */

    public static class Ipv6ForwardingRule {

        public final int upstreamIfindex;

packages/Tethering/src/com/android/networkstack/tethering/Tethering.java

+5 −0
Original line number Diff line number Diff line
@@ -2236,6 +2236,11 @@ public class Tethering { 
        mOffloadController.dump(pw);

        pw.decreaseIndent();



        pw.println("BPF offload:");

        pw.increaseIndent();

        mBpfCoordinator.dump(pw);

        pw.decreaseIndent();



        pw.println("Private address coordinator:");

        pw.increaseIndent();

        mPrivateAddressCoordinator.dump(pw);