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Commit f15b2824 authored by Hugo Benichi's avatar Hugo Benichi
Browse files

Explicitly pass old score to updateCapabilities 

This allows simplification of getCurrentScore function in
NetworkAgentInfo and its return value to depend on everValidated and
lastValidated.

Bug: 31075769
Change-Id: I0b3c85e3a61b006733e900e0a231424878317476
parent 702b0cb0

services/core/java/com/android/server/ConnectivityService.java

+8 −5
Original line number Diff line number Diff line
@@ -2138,7 +2138,7 @@ public class ConnectivityService extends IConnectivityManager.Stub 
                        Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: "

                                + nai.networkCapabilities + " -> " + networkCapabilities);

                    }

                    updateCapabilities(nai, networkCapabilities);

                    updateCapabilities(nai.getCurrentScore(), nai, networkCapabilities);

                    break;

                }

                case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: {
@@ -2215,7 +2215,7 @@ public class ConnectivityService extends IConnectivityManager.Stub 
                            final int oldScore = nai.getCurrentScore();

                            nai.lastValidated = valid;

                            nai.everValidated |= valid;

                            updateCapabilities(nai, nai.networkCapabilities);

                            updateCapabilities(oldScore, nai, nai.networkCapabilities);

                            // If score has changed, rebroadcast to NetworkFactories. b/17726566

                            if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai);

                        }
@@ -2239,9 +2239,10 @@ public class ConnectivityService extends IConnectivityManager.Stub 
                    }

                    // If captive portal status has changed, update capabilities.

                    if (nai != null && (visible != nai.lastCaptivePortalDetected)) {

                        final int oldScore = nai.getCurrentScore();

                        nai.lastCaptivePortalDetected = visible;

                        nai.everCaptivePortalDetected |= visible;

                        updateCapabilities(nai, nai.networkCapabilities);

                        updateCapabilities(oldScore, nai, nai.networkCapabilities);

                    }

                    if (!visible) {

                        mNotifier.clearNotification(netId);
@@ -4459,10 +4460,13 @@ public class ConnectivityService extends IConnectivityManager.Stub 
     * augmented with any stateful capabilities implied from {@code networkAgent}

     * (e.g., validated status and captive portal status).

     *

     * @param oldScore score of the network before any of the changes that prompted us

     *                 to call this function.

     * @param nai the network having its capabilities updated.

     * @param networkCapabilities the new network capabilities.

     */

    private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) {

    private void updateCapabilities(

            int oldScore, NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) {

        // Don't modify caller's NetworkCapabilities.

        networkCapabilities = new NetworkCapabilities(networkCapabilities);

        if (nai.lastValidated) {
@@ -4476,7 +4480,6 @@ public class ConnectivityService extends IConnectivityManager.Stub 
            networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL);

        }

        if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) {

            final int oldScore = nai.getCurrentScore();

            if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) !=

                    networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) {

                try {

services/core/java/com/android/server/connectivity/NetworkAgentInfo.java

+1 −4
Original line number Diff line number Diff line
@@ -354,10 +354,7 @@ public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> { 
        }



        int score = currentScore;

        // Use NET_CAPABILITY_VALIDATED here instead of lastValidated, this allows

        // ConnectivityService.updateCapabilities() to compute the old score prior to updating

        // networkCapabilities (with a potentially different validated state).

        if (!networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED) && !pretendValidated) {

        if (!lastValidated && !pretendValidated) {

            score -= UNVALIDATED_SCORE_PENALTY;

        }

        if (score < 0) score = 0;