[MAC rand] Repurpose existing field

Repurposing an old field to suit the new design of throttling MAC
address changes based on DHCP lease duration.

Bug: 141950243
Test: unit tests
Change-Id: Ide71816895eb088f728105d1f675a6823490423f

1 files changed, 9 insertions, 8 deletions

diff --git a/wifi/java/android/net/wifi/WifiConfiguration.java b/wifi/java/android/net/wifi/WifiConfiguration.java
index 2afb14a12110..05a6a39167b6 100644
--- a/wifi/java/android/net/wifi/WifiConfiguration.java
+++ b/wifi/java/android/net/wifi/WifiConfiguration.java
@@ -1038,10 +1038,10 @@ public class WifiConfiguration implements Parcelable {
 
     /**
      * @hide
-     * The wall clock time of when |mRandomizedMacAddress| last changed.
-     * Used to determine when we should re-randomize in aggressive mode.
+     * The wall clock time of when |mRandomizedMacAddress| should be re-randomized in aggressive
+     * randomization mode.
      */
-    public long randomizedMacLastModifiedTimeMs = 0;
+    public long randomizedMacExpirationTimeMs = 0;
 
     /**
      * @hide
@@ -1902,8 +1902,9 @@ public class WifiConfiguration implements Parcelable {
         }
         sbuf.append(" macRandomizationSetting: ").append(macRandomizationSetting).append("\n");
         sbuf.append(" mRandomizedMacAddress: ").append(mRandomizedMacAddress).append("\n");
-        sbuf.append(" randomizedMacLastModifiedTimeMs: ").append(randomizedMacLastModifiedTimeMs)
-                .append("\n");
+        sbuf.append(" randomizedMacExpirationTimeMs: ")
+                .append(randomizedMacExpirationTimeMs == 0 ? "<none>"
+                        : TimeUtils.logTimeOfDay(randomizedMacExpirationTimeMs)).append("\n");
         sbuf.append(" KeyMgmt:");
         for (int k = 0; k < this.allowedKeyManagement.size(); k++) {
             if (this.allowedKeyManagement.get(k)) {
@@ -2429,7 +2430,7 @@ public class WifiConfiguration implements Parcelable {
             recentFailure.setAssociationStatus(source.recentFailure.getAssociationStatus());
             mRandomizedMacAddress = source.mRandomizedMacAddress;
             macRandomizationSetting = source.macRandomizationSetting;
-            randomizedMacLastModifiedTimeMs = source.randomizedMacLastModifiedTimeMs;
+            randomizedMacExpirationTimeMs = source.randomizedMacExpirationTimeMs;
             requirePMF = source.requirePMF;
             updateIdentifier = source.updateIdentifier;
         }
@@ -2504,7 +2505,7 @@ public class WifiConfiguration implements Parcelable {
         dest.writeParcelable(mRandomizedMacAddress, flags);
         dest.writeInt(macRandomizationSetting);
         dest.writeInt(osu ? 1 : 0);
-        dest.writeLong(randomizedMacLastModifiedTimeMs);
+        dest.writeLong(randomizedMacExpirationTimeMs);
     }
 
     /** Implement the Parcelable interface {@hide} */
@@ -2579,7 +2580,7 @@ public class WifiConfiguration implements Parcelable {
                 config.mRandomizedMacAddress = in.readParcelable(null);
                 config.macRandomizationSetting = in.readInt();
                 config.osu = in.readInt() != 0;
-                config.randomizedMacLastModifiedTimeMs = in.readLong();
+                config.randomizedMacExpirationTimeMs = in.readLong();
                 return config;
             }