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Don't reset country code once it is persisted

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This change simply ignores resetting of country code by cellular
networks to avoid disconnecting existing wifi connections. It also
defers setting newly found country code until after existing Wifi
connection is torn down.

Also removes some dead code related to resetting of country codes.

Bug: 13894807
Change-Id: Ie2fcfdd4b3be8ba94542772c132fb1acb6a2c683
This commit is contained in:
Vinit Deshapnde
2014-04-17 11:05:21 -07:00
parent 849a8208c8
commit b5ee95edf9
3 changed files with 10 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
core/res/res/values/config.xml
View File

@@ -352,10 +352,6 @@
<!-- Wifi driver supports batched scan -->
<bool translatable="false" name="config_wifi_batched_scan_supported">false</bool>
<!-- Wifi driver's fallback country code; WS is ISO-Alpha2 code for Samoa which
has restrictions on can be scanned; which may satisfy quite a few regulatory issues. -->
<string translatable="false" name="config_wifi_unknown_country_code">WS</string>
<!-- Flag indicating whether the we should enable the automatic brightness in Settings.
Software implementation will be used if config_hardware_auto_brightness_available is not set -->
<bool name="config_automatic_brightness_available">false</bool>

1
core/res/res/values/symbols.xml
View File

@@ -478,7 +478,6 @@
<java-symbol type="string" name="config_ntpServer" />
<java-symbol type="string" name="config_tether_apndata" />
<java-symbol type="string" name="config_useragentprofile_url" />
<java-symbol type="string" name="config_wifi_unknown_country_code" />
<java-symbol type="string" name="config_wifi_p2p_device_type" />
<java-symbol type="string" name="contentServiceSync" />
<java-symbol type="string" name="contentServiceSyncNotificationTitle" />

19
wifi/java/android/net/wifi/WifiStateMachine.java
View File

@@ -233,8 +233,6 @@ public class WifiStateMachine extends StateMachine {
private DhcpStateMachine mDhcpStateMachine;
private boolean mDhcpActive = false;
// Delay in switching to null country code (non-null has no delay)
private final int COUNTRY_CODE_DELAY_MS = 15000;
private final AtomicInteger mCountryCodeSequence = new AtomicInteger();
private class InterfaceObserver extends BaseNetworkObserver {
@@ -1538,15 +1536,13 @@ public class WifiStateMachine extends StateMachine {
* @param persist {@code true} if the setting should be remembered.
*/
public void setCountryCode(String countryCode, boolean persist) {
// If it's a country code, apply immediately,
// If it's empty, delay it in case it's a momentary dropout
// If it's a good country code, apply after the current
// wifi connection is terminated; ignore resetting of code
// for now (it is unclear what the chipset should do when
// country code is reset)
int countryCodeSequence = mCountryCodeSequence.incrementAndGet();
if (TextUtils.isEmpty(countryCode)) {
String defaultCountryCode = mContext.getResources().getString(
R.string.config_wifi_unknown_country_code);
sendMessageDelayed(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0,
defaultCountryCode, COUNTRY_CODE_DELAY_MS);
log("Ignoring resetting of country code");
} else {
sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode);
}
@@ -1661,6 +1657,8 @@ public class WifiStateMachine extends StateMachine {
pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled);
pw.println("Supplicant status " + mWifiNative.status());
pw.println("mEnableBackgroundScan " + mEnableBackgroundScan);
pw.println("mLastSetCountryCode " + mLastSetCountryCode);
pw.println("mPersistedCountryCode " + mPersistedCountryCode);
pw.println();
mWifiConfigStore.dump(fd, pw, args);
}
@@ -3679,6 +3677,9 @@ public class WifiStateMachine extends StateMachine {
deferMessage(message);
}
break;
case CMD_SET_COUNTRY_CODE:
deferMessage(message);
break;
case CMD_START_SCAN:
/* Do not attempt to connect when we are already connected */
noteScanStart(message.arg1, (WorkSource) message.obj);