1 /*
   2  * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package rdma.ch;
  26 
  27 import java.io.IOException;
  28 import java.io.InputStream;
  29 import java.io.OutputStream;
  30 import java.net.SocketException;
  31 import java.net.InetAddress;
  32 import java.net.SocketImpl;
  33 import sun.net.ext.RdmaSocketOptions;
  34 import rdma.ch.RdmaSocketImpl.PlatformRdmaSocketImpl;
  35 
  36 class LinuxRdmaSocketImpl extends PlatformRdmaSocketImpl
  37 {
  38     static {
  39         java.security.AccessController.doPrivileged(
  40             new java.security.PrivilegedAction<>() {
  41                 public Void run() {
  42                     System.loadLibrary("net");
  43                     System.loadLibrary("extnet");
  44                     return null;
  45                 }
  46             });
  47         initProto();
  48     }
  49 
  50     public LinuxRdmaSocketImpl() { }
  51 
  52     static final RdmaSocketOptions rdmaOptions =
  53             RdmaSocketOptions.getInstance();
  54 
  55     private static volatile boolean checkedRdma;
  56     private static volatile boolean isRdmaAvailable;
  57 
  58     boolean isRdmaAvailable() {
  59         if (!checkedRdma) {
  60             isRdmaAvailable = isRdmaAvailable0();
  61             checkedRdma = true;
  62         }
  63         return isRdmaAvailable;
  64     }
  65 
  66     protected synchronized RdmaSocketInputStream getRdmaInputStream(
  67             RdmaSocketImpl impl) throws IOException {
  68         return new RdmaSocketInputStream(impl);
  69     }
  70 
  71     protected synchronized RdmaSocketOutputStream getRdmaOutputStream(
  72             RdmaSocketImpl impl) throws IOException {
  73         return new RdmaSocketOutputStream(impl);
  74     }
  75 
  76     protected void rdmaSocketShutdownInput(int howto, RdmaSocketImpl impl,
  77             InputStream socketInputStream) throws IOException {
  78         rdmaSocketShutdown(howto, impl);
  79         if (socketInputStream != null) {
  80             ((RdmaSocketInputStream)socketInputStream).setEOF(true);
  81         }
  82     }
  83 
  84     static native void initProto();
  85 
  86     private static native boolean isRdmaAvailable0();
  87 
  88     native void rdmaSocketCreate(boolean isServer, RdmaSocketImpl impl) throws IOException;
  89 
  90     native void rdmaSocketConnect(RdmaSocketImpl impl, InetAddress address, int port, int timeout)
  91         throws IOException;
  92 
  93     native void rdmaSocketBind(RdmaSocketImpl impl, InetAddress address, int port)
  94         throws IOException;
  95 
  96     native void rdmaSocketListen(RdmaSocketImpl impl, int count) throws IOException;
  97 
  98     native void rdmaSocketAccept(SocketImpl impl, RdmaSocketImpl s) throws IOException;
  99 
 100     native int rdmaSocketAvailable(RdmaSocketImpl impl) throws IOException;
 101 
 102     native void rdmaSocketClose(boolean useDeferredClose, RdmaSocketImpl impl) throws IOException;
 103 
 104     native void rdmaSocketShutdown(int howto, RdmaSocketImpl impl) throws IOException;
 105 
 106     native void rdmaSocketSetOption(RdmaSocketImpl impl, int cmd, boolean on, Object value)
 107         throws SocketException;
 108 
 109     native int rdmaSocketGetOption(RdmaSocketImpl impl, int opt, Object iaContainerObj) throws SocketException;
 110 
 111     native void rdmaSocketSendUrgentData(RdmaSocketImpl impl, int data) throws IOException;
 112 }