LineageOS/android_packages_modules_Connectivity
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Support ignoring penalty for bad wifi networks

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This patch adds a way to configure devices so that a validated network
that becomes unvalidated is not penalized in the network scoring and
selection logic.

The intent is to prevent devices configured to do so from switching to a
lower scoring network such as cellular networks when a higher scoring
network such as wifi networks loses internet connectivity.

Bug: 31075769
Change-Id: Ie7e0f2607d214a178367fedfbef6c44768fa00a4
This commit is contained in:
Hugo Benichi
2016-09-14 23:23:08 +00:00
parent bbc15194de
commit c9048bc556
2 changed files with 18 additions and 1 deletions
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9
services/core/java/com/android/server/ConnectivityService.java
View File

@@ -2704,6 +2704,15 @@ public class ConnectivityService extends IConnectivityManager.Stub
PROMPT_UNVALIDATED_DELAY_MS);
}
@VisibleForTesting
public boolean avoidBadWifi() {
int defaultAvoidBadWifi =
mContext.getResources().getInteger(R.integer.config_networkAvoidBadWifi);
int avoid = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.NETWORK_AVOID_BAD_WIFI, defaultAvoidBadWifi);
return avoid == 1;
}
private void handlePromptUnvalidated(Network network) {
if (VDBG) log("handlePromptUnvalidated " + network);
NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);

10
services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
View File

@@ -113,6 +113,7 @@ import java.util.TreeSet;
// a NetworkRequest, ConnectivityService will cancel the future disconnection of the NetworkAgent's
// AsyncChannel, and the network is no longer considered "lingering".
public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> {
public NetworkInfo networkInfo;
// This Network object should always be used if possible, so as to encourage reuse of the
// enclosed socket factory and connection pool. Avoid creating other Network objects.
@@ -354,13 +355,20 @@ public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> {
}
int score = currentScore;
if (!lastValidated && !pretendValidated) {
if (!lastValidated && !pretendValidated && !ignoreWifiUnvalidationPenalty()) {
score -= UNVALIDATED_SCORE_PENALTY;
}
if (score < 0) score = 0;
return score;
}
// Return true on devices configured to ignore score penalty for wifi networks
// that become unvalidated (b/31075769).
private boolean ignoreWifiUnvalidationPenalty() {
boolean isWifi = networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
return isWifi && !mConnService.avoidBadWifi() && everValidated;
}
// Get the current score for this Network. This may be modified from what the
// NetworkAgent sent, as it has modifiers applied to it.
public int getCurrentScore() {