--- /dev/null	2018-09-16 08:14:05.604314476 -0700
+++ new/src/jdk.net/linux/classes/jdk/internal/net/rdma/LinuxRdmaSocketDispatcherImpl.java	2018-10-05 14:14:41.556757010 -0700
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 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 jdk.internal.net.rdma;
+
+import java.io.FileDescriptor;
+import java.io.IOException;
+import sun.nio.ch.IOUtil;
+
+import jdk.internal.misc.JavaIOFileDescriptorAccess;
+import jdk.internal.misc.SharedSecrets;
+
+public class LinuxRdmaSocketDispatcherImpl {
+
+    static {
+        java.security.AccessController.doPrivileged(
+                new java.security.PrivilegedAction<Void>() {
+                    public Void run() {
+                        System.loadLibrary("extnet");
+                        return null;
+                    }
+                });
+        IOUtil.load();
+        init();
+    }
+
+    private static final JavaIOFileDescriptorAccess fdAccess =
+            SharedSecrets.getJavaIOFileDescriptorAccess();
+
+        LinuxRdmaSocketDispatcherImpl() {
+    }
+
+    protected void close(FileDescriptor fd) throws IOException {
+        fdAccess.close(fd);
+    }
+
+    // -- Native methods --
+
+    static native int read0(FileDescriptor fd, long address, int len)
+        throws IOException;
+
+    static native long readv0(FileDescriptor fd, long address, int len)
+        throws IOException;
+
+    static native int write0(FileDescriptor fd, long address, int len)
+        throws IOException;
+
+    static native long writev0(FileDescriptor fd, long address, int len)
+        throws IOException;
+
+    static native void close0(FileDescriptor fd) throws IOException;
+
+    static native void init();
+}