Wifi Usability Metrics Proto Update

Generate WifiIsUnusableEvent when there is a data stall or a firmware
alert. In WifiIsUnusableEvent, store metrics related to time, packet
counts, trigger reason, and score.

Also, log ExperimentValues that we plan to change through global
settings varaible.

This logging is enabled by setting WIFI_IS_UNUSABLE_EVENT_METRICS_ENABLED
to 1. By default, this metric is not collected.

Manual Check Process:
- Connect to a network
- adb shell settings put global wifi_is_unusable_event_metrics_enabled 1
- adb shell dumpsys wifi wifiMetricsProto
- Move away from the ap to trigger data stall
- adb shell dumpsys wifi | grep -10 WifiIsUnusableEventList
- Verify that there is a WifiIsUnusableEvent

Bug: 77603216
Test: Unittest (settings core/tests/coretests).
Test: Manual Check.
Change-Id: I2d8425a420f5ba18e3eee0e11b6f35f6239a97b2

1 files changed, 25 insertions, 0 deletions

diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 4534f48d7772..38399381ede4 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -9910,6 +9910,31 @@ public final class Settings {
         public static final String WIFI_SCORE_PARAMS =
                 "wifi_score_params";
 
+        /**
+         * Setting to enable logging WifiIsUnusableEvent in metrics
+         * which gets triggered when wifi becomes unusable.
+         * Disabled by default, and setting it to 1 will enable it.
+         * @hide
+         */
+        public static final String WIFI_IS_UNUSABLE_EVENT_METRICS_ENABLED =
+                "wifi_is_unusable_event_metrics_enabled";
+
+        /**
+         * The minimum number of txBad the framework has to observe
+         * to trigger a wifi data stall.
+         * @hide
+         */
+        public static final String WIFI_DATA_STALL_MIN_TX_BAD =
+                "wifi_data_stall_min_tx_bad";
+
+        /**
+         * The minimum number of txSuccess the framework has to observe
+         * to trigger a wifi data stall when rxSuccess is 0.
+         * @hide
+         */
+        public static final String WIFI_DATA_STALL_MIN_TX_SUCCESS_WITHOUT_RX =
+                "wifi_data_stall_min_tx_success_without_rx";
+
        /**
         * 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.