[KA04] Expose TCP socket keepalive API

The new set of API allows applications to request keepalives
offload for established TCP sockets over wifi.

However, the application must not write to or read from the
socket after calling this method, until specific callbacks are
called.

Bug: 114151147
Test: atest FrameworksNetTests FrameworksWifiTests NetworkStackTests

Change-Id: I3880505dbc35fefa34ef6c79555458ecf5d296a4

1 files changed, 24 insertions, 0 deletions

diff --git a/src/android/net/apf/ApfFilter.java b/src/android/net/apf/ApfFilter.java
index 4fa7d64..8801741 100644
--- a/src/android/net/apf/ApfFilter.java
+++ b/src/android/net/apf/ApfFilter.java
@@ -38,6 +38,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
+import android.net.TcpKeepalivePacketDataParcelable;
 import android.net.apf.ApfGenerator.IllegalInstructionException;
 import android.net.apf.ApfGenerator.Register;
 import android.net.ip.IpClient.IpClientCallbacksWrapper;
@@ -1489,6 +1490,29 @@ public class ApfFilter {
         installNewProgramLocked();
     }
 
+    /**
+     * Add keepalive packet filter.
+     *
+     * @param slot The index used to access the filter.
+     * @param pkt Parameters needed to compose the filter.
+     */
+    public synchronized void addKeepalivePacketFilter(int slot,
+            TcpKeepalivePacketDataParcelable pkt) {
+        // TODO: implement this.
+        Log.e(TAG, "APF function is not implemented: addKeepalivePacketFilter(" + slot + ", "
+                + pkt + ")");
+    }
+
+    /**
+     * Remove keepalive packet filter.
+     *
+     * @param slot The index used to access the filter.
+     */
+    public synchronized void removeKeepalivePacketFilter(int slot) {
+        // TODO: implement this.
+        Log.e(TAG, "APF function is not implemented: removeKeepalivePacketFilter(" + slot + ")");
+    }
+
     static public long counterValue(byte[] data, Counter counter)
             throws ArrayIndexOutOfBoundsException {
         // Follow the same wrap-around addressing scheme of the interpreter.