diff options
| -rw-r--r-- | core/java/android/provider/Settings.java | 6 | ||||
| -rw-r--r-- | services/java/com/android/server/ConnectivityService.java | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java index 04f3f0a..3810eb3 100644 --- a/core/java/android/provider/Settings.java +++ b/core/java/android/provider/Settings.java @@ -5140,6 +5140,12 @@ public final class Settings { public static final String SMS_SHORT_CODE_RULE = "sms_short_code_rule"; /** + * Used to select TCP's default initial receiver window size in segments - defaults to a build config value + * @hide + */ + public static final String TCP_DEFAULT_INIT_RWND = "tcp_default_init_rwnd"; + + /** * Used to disable Tethering on a device - defaults to true * @hide */ diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java index 29a7268..8613fea 100644 --- a/services/java/com/android/server/ConnectivityService.java +++ b/services/java/com/android/server/ConnectivityService.java @@ -2760,6 +2760,15 @@ public class ConnectivityService extends IConnectivityManager.Stub { } setBufferSize(bufferSizes); } + + final String defaultRwndKey = "net.tcp.default_init_rwnd"; + int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); + Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), + Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); + final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; + if (rwndValue != 0) { + SystemProperties.set(sysctlKey, rwndValue.toString()); + } } /** |