1 /* 2 * Copyright (c) 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 jdk.internal.net.rdma; 26 27 import java.io.IOException; 28 import java.io.InputStream; 29 import java.net.SocketException; 30 import java.net.InetAddress; 31 import java.net.SocketImpl; 32 import sun.net.ext.RdmaSocketOptions; 33 import static jdk.internal.net.rdma.RdmaSocketImpl.PlatformRdmaSocketImpl; 34 35 class LinuxRdmaSocketImpl extends PlatformRdmaSocketImpl 36 { 37 private static final UnsupportedOperationException unsupported; 38 39 private static final Void checkSupported() { 40 if (unsupported != null) 41 throw new UnsupportedOperationException(unsupported.getMessage(), unsupported); 42 else 43 return null; 44 } 45 46 static { 47 java.security.AccessController.doPrivileged( 48 new java.security.PrivilegedAction<>() { 49 public Void run() { 50 System.loadLibrary("net"); 51 System.loadLibrary("extnet"); 52 return null; 53 } 54 }); 55 UnsupportedOperationException uoe = null; 56 try { 57 initProto(); 58 } catch (UnsupportedOperationException e) { 59 uoe = e; 60 } 61 unsupported = uoe; 62 } 63 64 public LinuxRdmaSocketImpl() { 65 this(checkSupported()); 66 } 67 68 private LinuxRdmaSocketImpl(Void unused) { } 69 70 static final RdmaSocketOptions rdmaOptions = 71 RdmaSocketOptions.getInstance(); 72 73 private static volatile boolean checkedRdma; 74 private static volatile boolean isRdmaAvailable; 75 76 boolean isRdmaAvailable() { 77 if (!checkedRdma) { 78 isRdmaAvailable = isRdmaAvailable0(); 79 checkedRdma = true; 80 } 81 return isRdmaAvailable; 82 } 83 84 protected synchronized RdmaSocketInputStream getRdmaInputStream( 85 RdmaSocketImpl impl) throws IOException { 86 return new RdmaSocketInputStream(impl); 87 } 88 89 protected synchronized RdmaSocketOutputStream getRdmaOutputStream( 90 RdmaSocketImpl impl) throws IOException { 91 return new RdmaSocketOutputStream(impl); 92 } 93 94 protected void rdmaSocketShutdownInput(int howto, RdmaSocketImpl impl, 95 InputStream socketInputStream) throws IOException { 96 rdmaSocketShutdown(howto, impl); 97 if (socketInputStream != null) { 98 ((RdmaSocketInputStream)socketInputStream).setEOF(true); 99 } 100 } 101 102 static native void initProto() throws UnsupportedOperationException; 103 104 private static native boolean isRdmaAvailable0(); 105 106 native void rdmaSocketCreate(RdmaSocketImpl impl) throws IOException; 107 108 native void rdmaSocketConnect(RdmaSocketImpl impl, InetAddress address, int port, int timeout) 109 throws IOException; 110 111 native void rdmaSocketBind(RdmaSocketImpl impl, InetAddress address, int port) 112 throws IOException; 113 114 native void rdmaSocketListen(RdmaSocketImpl impl, int count) throws IOException; 115 116 native void rdmaSocketAccept(SocketImpl impl, RdmaSocketImpl s) throws IOException; 117 118 native int rdmaSocketAvailable(RdmaSocketImpl impl) throws IOException; 119 120 native void rdmaSocketClose(boolean useDeferredClose, RdmaSocketImpl impl) throws IOException; 121 122 native void rdmaSocketShutdown(int howto, RdmaSocketImpl impl) throws IOException; 123 124 native void rdmaSocketSetOption(RdmaSocketImpl impl, int cmd, boolean on, Object value) 125 throws SocketException; 126 127 native int rdmaSocketGetOption(RdmaSocketImpl impl, int opt, Object iaContainerObj) throws SocketException; 128 129 native void rdmaSocketSendUrgentData(RdmaSocketImpl impl, int data) throws IOException; 130 }