--- /dev/null	2018-06-04 09:38:58.268495706 -0700
+++ new/src/jdk.net/linux/classes/rdma/ch/LinuxRdmaSocketImpl.java	2018-06-04 11:02:25.595275305 -0700
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2007, 2018, 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 rdma.ch;
+
+import java.io.IOException;
+import java.net.SocketException;
+import java.net.InetAddress;
+import java.net.SocketImpl;
+import sun.net.ext.RdmaSocketOptions;
+import rdma.ch.RdmaSocketImpl.PlatformRdmaSocketImpl;
+
+class LinuxRdmaSocketImpl extends PlatformRdmaSocketImpl
+{
+    static {
+        java.security.AccessController.doPrivileged(
+            new java.security.PrivilegedAction<>() {
+                public Void run() {
+                    System.loadLibrary("net");
+                    System.loadLibrary("extnet");
+                    return null;
+                }
+            });
+        initProto();
+    }
+
+    public LinuxRdmaSocketImpl() { }
+
+    static final RdmaSocketOptions rdmaOptions =
+            RdmaSocketOptions.getInstance();
+
+    private static volatile boolean checkedRdma;
+    private static volatile boolean isRdmaAvailable;
+
+    boolean isRdmaAvailable() {
+        if (!checkedRdma) {
+            isRdmaAvailable = isRdmaAvailable0();
+            checkedRdma = true;
+        }
+        return isRdmaAvailable;
+    }
+
+    static native void initProto();
+
+    private static native boolean isRdmaAvailable0();
+
+    native void rdmaSocketCreate(boolean isServer, RdmaSocketImpl impl) throws IOException;
+
+    native void rdmaSocketConnect(RdmaSocketImpl impl, InetAddress address, int port, int timeout)
+        throws IOException;
+
+    native void rdmaSocketBind(RdmaSocketImpl impl, InetAddress address, int port)
+        throws IOException;
+
+    native void rdmaSocketListen(RdmaSocketImpl impl, int count) throws IOException;
+
+    native void rdmaSocketAccept(SocketImpl impl, RdmaSocketImpl s) throws IOException;
+
+    native int rdmaSocketAvailable(RdmaSocketImpl impl) throws IOException;
+
+    native void rdmaSocketClose(boolean useDeferredClose, RdmaSocketImpl impl) throws IOException;
+
+    native void rdmaSocketShutdown(int howto, RdmaSocketImpl impl) throws IOException;
+
+    native void rdmaSocketSetOption(RdmaSocketImpl impl, int cmd, boolean on, Object value)
+        throws SocketException;
+
+    native int rdmaSocketGetOption(RdmaSocketImpl impl, int opt, Object iaContainerObj) throws SocketException;
+
+    native void rdmaSocketSendUrgentData(RdmaSocketImpl impl, int data) throws IOException;
+}