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