/*

 * 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.

 */

#include "jdk_net_LinuxRdmaSocketOptions.h"

#include "rdma_util_md.h"

#include "Rsocket.h"

#include "jni_util.h"

void throwByNameWithLastError(JNIEnv *env, const char *name,

        const char *defaultDetail) {

  char defaultMsg[255];

  sprintf(defaultMsg, "errno: %d, %s", errno, defaultDetail);

  JNU_ThrowByNameWithLastError(env, name, defaultMsg);

}

JNIEXPORT void JNICALL

Java_jdk_net_LinuxRdmaSocketOptions_init(JNIEnv *env, jclass c) {

   loadRdmaFuncs(env);

}

JNIEXPORT void JNICALL

Java_jdk_net_LinuxRdmaSocketOptions_setSockOpt(JNIEnv *env,

        jobject unused, jint fd, jint opt, jint value) {

    int optname;

    int level = SOL_RDMA;

    RDMA_MapSocketOption(opt, &level, &optname);

    int len = sizeof(value);

    int rv = RDMA_SetSockOpt(fd, level, optname, (char*)&value, len);    

    if (rv < 0) {

        if (errno == ENOPROTOOPT) {

            JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",

                            "unsupported RDMA socket option");

        } else if (errno == EACCES || errno == EPERM) {

            JNU_ThrowByName(env, "java/net/SocketException", "Permission denied");

        } else {

            throwByNameWithLastError(env, "java/net/SocketException",

                                     "set RDMA option failed");

        }

    }

}

JNIEXPORT jint JNICALL

Java_jdk_net_LinuxRdmaSocketOptions_getSockOpt(JNIEnv *env,

        jobject unused, jint fd, jint opt) {

    int optname;

    int level = SOL_RDMA;

    RDMA_MapSocketOption(opt, &level, &optname);

    int value;

    int len = sizeof(value);

    int rv = RDMA_GetSockOpt(fd, level, optname, (char*)&value, &len);

    if (rv < 0) {

        if (errno == ENOPROTOOPT) {

            JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",

                            "unsupported RDMA socket option");

        } else if (errno == EACCES || errno == EPERM) {

            JNU_ThrowByName(env, "java/net/SocketException", "Permission denied");

        } else {

            throwByNameWithLastError(env, "java/net/SocketException",

                                     "get RDMA option failed");

        }

        return -1;

    }

    return value;

}

JNIEXPORT jboolean JNICALL

Java_jdk_net_LinuxRdmaSocketOptions_rdmaSocketSupported(JNIEnv *env,

        jobject unused) {

    int rv, s;

    s = rs_socket(PF_INET, SOCK_STREAM, 0);

    if (s < 0) {

        return JNI_FALSE;

    }

    rs_close(s);

    return JNI_TRUE;

}