--- /dev/null	2017-09-27 07:37:33.951999979 +0530
+++ new/src/jdk.net/linux/classes/jdk/net/LinuxSocketOptions.java	2017-09-27 14:02:48.467067154 +0530
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.net;
+
+import java.net.SocketException;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import jdk.net.ExtendedSocketOptions.PlatformSocketOptions;
+
+class LinuxSocketOptions extends PlatformSocketOptions {
+
+    public LinuxSocketOptions() {
+    }
+
+    @Override
+    native void setQuickAck(int fd, int on) throws SocketException;
+
+    @Override
+    Object getQuickAck(int fd) throws SocketException {
+        int val = getQuickAck0(fd);
+        return val != 0;
+    }
+
+    native private int getQuickAck0(int fd) throws SocketException;
+
+    @Override
+    native public boolean quickAckSupported();
+
+    static {
+        AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
+            System.loadLibrary("extnet");
+            return null;
+        });
+    }
+}