Wifi: Add a public API to query for supported wifi standards

This commit adds a public API to query for the supported wifi standards.

Bug: 143543900
Bug: 134688244
Bug: 144576344
Test: atest com.android.wifi.server
Change-Id: I57ac90c7d3473a71435bfb96b19d983ae433082a

5 files changed, 33 insertions, 0 deletions

diff --git a/api/current.txt b/api/current.txt
index 7469299b1189..69b4af54cfb8 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -30774,6 +30774,7 @@ package android.net.wifi {
     method public boolean isTdlsSupported();
     method public boolean isWapiSupported();
     method public boolean isWifiEnabled();
+    method public boolean isWifiStandardSupported(int);
     method public boolean isWpa3SaeSupported();
     method public boolean isWpa3SuiteBSupported();
     method @Deprecated public boolean pingSupplicant();
diff --git a/wifi/java/android/net/wifi/IWifiManager.aidl b/wifi/java/android/net/wifi/IWifiManager.aidl
index 5a98ac86e783..dafb4de62f3c 100644
--- a/wifi/java/android/net/wifi/IWifiManager.aidl
+++ b/wifi/java/android/net/wifi/IWifiManager.aidl
@@ -117,6 +117,8 @@ interface IWifiManager
 
     boolean is6GHzBandSupported();
 
+    boolean isWifiStandardSupported(int standard);
+
     boolean needs5GHzToAnyApBandConversion();
 
     DhcpInfo getDhcpInfo();
diff --git a/wifi/java/android/net/wifi/WifiManager.java b/wifi/java/android/net/wifi/WifiManager.java
index 1b74cba6a83e..30f0fb5234bd 100644
--- a/wifi/java/android/net/wifi/WifiManager.java
+++ b/wifi/java/android/net/wifi/WifiManager.java
@@ -2491,6 +2491,20 @@ public class WifiManager {
     }
 
     /**
+     * Check if the chipset supports a certain Wi-Fi standard.
+     * @param standard the IEEE 802.11 standard to check on.
+     *        valid values from {@link ScanResult}'s {@code WIFI_STANDARD_}
+     * @return {@code true} if supported, {@code false} otherwise.
+     */
+    public boolean isWifiStandardSupported(@ScanResult.WifiStandard int standard) {
+        try {
+            return mService.isWifiStandardSupported(standard);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
      * Interface for Wi-Fi activity energy info listener. Should be implemented by applications and
      * set when calling {@link WifiManager#getWifiActivityEnergyInfoAsync}.
      *
diff --git a/wifi/java/com/android/server/wifi/BaseWifiService.java b/wifi/java/com/android/server/wifi/BaseWifiService.java
index 08822e2762f6..56fa6e23a852 100644
--- a/wifi/java/com/android/server/wifi/BaseWifiService.java
+++ b/wifi/java/com/android/server/wifi/BaseWifiService.java
@@ -254,6 +254,11 @@ public class BaseWifiService extends IWifiManager.Stub {
     }
 
     @Override
+    public boolean isWifiStandardSupported(int standard) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
     public boolean needs5GHzToAnyApBandConversion() {
         throw new UnsupportedOperationException();
     }
diff --git a/wifi/tests/src/android/net/wifi/WifiManagerTest.java b/wifi/tests/src/android/net/wifi/WifiManagerTest.java
index 738c6337ee98..f369203e05ab 100644
--- a/wifi/tests/src/android/net/wifi/WifiManagerTest.java
+++ b/wifi/tests/src/android/net/wifi/WifiManagerTest.java
@@ -1959,6 +1959,17 @@ public class WifiManagerTest {
     }
 
     /**
+     * Test behavior of {@link WifiManager#isWifiStandardSupported()}
+     */
+    @Test
+    public void testIsWifiStandardSupported() throws Exception {
+        int standard = ScanResult.WIFI_STANDARD_11AX;
+        when(mWifiService.isWifiStandardSupported(standard)).thenReturn(true);
+        assertTrue(mWifiManager.isWifiStandardSupported(standard));
+        verify(mWifiService).isWifiStandardSupported(standard);
+    }
+
+    /**
      * Test behavior of {@link WifiManager#getDhcpInfo()}
      */
     @Test