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 26 27 #include "jdk_net_LinuxRdmaSocketOptions.h" 28 #include "rdma_util_md.h" 29 #include "Rsocket.h" 30 #include "jni_util.h" 31 32 void throwByNameWithLastError(JNIEnv *env, const char *name, 33 const char *defaultDetail) { 34 char defaultMsg[255]; 35 sprintf(defaultMsg, "errno: %d, %s", errno, defaultDetail); 36 JNU_ThrowByNameWithLastError(env, name, defaultMsg); 37 } 38 39 JNIEXPORT void JNICALL 40 Java_jdk_net_LinuxRdmaSocketOptions_init(JNIEnv *env, jclass c) { 41 loadRdmaFuncs(env); 42 } 43 44 JNIEXPORT void JNICALL 45 Java_jdk_net_LinuxRdmaSocketOptions_setSockOpt(JNIEnv *env, 46 jobject unused, jint fd, jint opt, jint value) { 47 int optname; 48 int level = SOL_RDMA; 49 RDMA_MapSocketOption(opt, &level, &optname); 50 int len = sizeof(value); 51 int rv = RDMA_SetSockOpt(fd, level, optname, (char*)&value, len); 52 if (rv < 0) { 53 if (errno == ENOPROTOOPT) { 54 JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", 55 "unsupported RDMA socket option"); 56 } else if (errno == EACCES || errno == EPERM) { 57 JNU_ThrowByName(env, "java/net/SocketException", "Permission denied"); 58 } else { 59 throwByNameWithLastError(env, "java/net/SocketException", 60 "set RDMA option failed"); 61 } 62 } 63 } 64 65 JNIEXPORT jint JNICALL 66 Java_jdk_net_LinuxRdmaSocketOptions_getSockOpt(JNIEnv *env, 67 jobject unused, jint fd, jint opt) { 68 int optname; 69 int level = SOL_RDMA; 70 RDMA_MapSocketOption(opt, &level, &optname); 71 int value; 72 int len = sizeof(value); 73 int rv = RDMA_GetSockOpt(fd, level, optname, (char*)&value, &len); 74 75 if (rv < 0) { 76 if (errno == ENOPROTOOPT) { 77 JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", 78 "unsupported RDMA socket option"); 79 } else if (errno == EACCES || errno == EPERM) { 80 JNU_ThrowByName(env, "java/net/SocketException", "Permission denied"); 81 } else { 82 throwByNameWithLastError(env, "java/net/SocketException", 83 "get RDMA option failed"); 84 } 85 return -1; 86 } 87 return value; 88 } 89 90 JNIEXPORT jboolean JNICALL 91 Java_jdk_net_LinuxRdmaSocketOptions_rdmaSocketSupported(JNIEnv *env, 92 jobject unused) { 93 int rv, s; 94 95 s = rs_socket(PF_INET, SOCK_STREAM, 0); 96 if (s < 0) { 97 return JNI_FALSE; 98 } 99 rs_close(s); 100 return JNI_TRUE; 101 }