commit d25253ed61b6e9f20ea1e47587c21a7436dc1c68
author David Su <dysu@google.com> Thu Jan 24 16:58:47 2019 -0800
committer David Su <dysu@google.com> Thu Jan 24 16:58:47 2019 -0800
tree 0ba0272c00cf21ce203b2a5ed38070045b1d3452
parent 7ee3291911e5c11ad187d5bb4154cc2798e8c4f0

Link Probing: Add feature flag

Link probing is disabled by default, enable it using
'adb shell settings put global wifi_link_probing_enabled 1'

Bug: 112029045
Test: atest SettingsBackupTest
Test: Manually check logs that link probing is not occurring when
disabled, and link probing occurs when enabled.

Change-Id: I43ceef59f5e3c76a229cb714e85d01ad16fe300e

core/java/android/provider/Settings.java

diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index b2c2d0e..b80dc57 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -10515,6 +10515,18 @@
         private static final Validator WIFI_PNO_RECENCY_SORTING_ENABLED_VALIDATOR =
                 BOOLEAN_VALIDATOR;
 
+        /**
+         * Setting to enable the Wi-Fi link probing.
+         * Disabled by default, and setting it to 1 will enable it.
+         * The value is boolean (0 or 1).
+         * @hide
+         */
+        public static final String WIFI_LINK_PROBING_ENABLED =
+                "wifi_link_probing_enabled";
+
+        private static final Validator WIFI_LINK_PROBING_ENABLED_VALIDATOR =
+                BOOLEAN_VALIDATOR;
+
        /**
         * The maximum number of times we will retry a connection to an access
         * point for which we have failed in acquiring an IP address from DHCP.
@@ -13221,6 +13233,7 @@
                     WIFI_PNO_FREQUENCY_CULLING_ENABLED_VALIDATOR);
             VALIDATORS.put(WIFI_PNO_RECENCY_SORTING_ENABLED,
                     WIFI_PNO_RECENCY_SORTING_ENABLED_VALIDATOR);
+            VALIDATORS.put(WIFI_LINK_PROBING_ENABLED, WIFI_LINK_PROBING_ENABLED_VALIDATOR);
         }
 
         /**

core/tests/coretests/src/android/provider/SettingsBackupTest.java

diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 87ad3d1..a0387be 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -521,6 +521,7 @@
                     Settings.Global.WIFI_LINK_SPEED_METRICS_ENABLED,
                     Settings.Global.WIFI_PNO_FREQUENCY_CULLING_ENABLED,
                     Settings.Global.WIFI_PNO_RECENCY_SORTING_ENABLED,
+                    Settings.Global.WIFI_LINK_PROBING_ENABLED,
                     Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT,
                     Settings.Global.WIFI_MOBILE_DATA_TRANSITION_WAKELOCK_TIMEOUT_MS,
                     Settings.Global.WIFI_NETWORK_SHOW_RSSI,