--- /dev/null	2018-09-16 08:14:05.604314476 -0700
+++ new/src/jdk.net/linux/native/libextnet/Rsocket.h	2018-10-05 14:14:57.890757203 -0700
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * 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 <sys/socket.h>
+#include <poll.h>
+#include "jni.h"
+
+/* Function types to support dynamic linking of socket API extension functions
+ * for RDMA. This is so that there is no linkage depandancy during build or
+ * runtime for librdmacm.*/
+typedef int rs_rsocket_func(int domain, int type, int protocol);
+typedef int rs_rfcntl_func(int fd, int cmd, ... /* arg */ );
+typedef int rs_rlisten_func(int sockfd, int backlog);
+typedef int rs_rbind_func(int sockfd, const struct sockaddr *addr,
+                     socklen_t addrlen);
+typedef int rs_rconnect_func(int sockfd, const struct sockaddr *addr,
+                               socklen_t addlen);
+typedef int rs_rgetsockname_func(int sockfd, struct sockaddr *addr,
+                                   socklen_t *addrlen);
+typedef int rs_rgetsockopt_func(int sockfd, int level, int optname,
+                                  void *optval, socklen_t *optlen);
+typedef int rs_rsetsockopt_func(int sockfd, int level, int optname,
+                                  const void *optval, socklen_t optlen);
+typedef int rs_rshutdown_func(int sockfd, int how);
+typedef int rs_rpoll_func(struct pollfd *fds, nfds_t nfds, int timeout);
+typedef size_t rs_rsend_func(int sockfd, const void *buf, size_t len,
+                               int flags);
+typedef int rs_raccept_func(int sockfd, struct sockaddr *addr,
+                              socklen_t *addrlen);
+typedef int rs_rclose_func(int sockfd);
+typedef ssize_t rs_rread_func(int sockfd, void *buf, size_t count);
+typedef ssize_t rs_rreadv_func(int sockfd, const struct iovec *iov, int iovcnt);
+typedef ssize_t rs_rwrite_func(int sockfd, const void *buf, size_t count);
+typedef ssize_t rs_rwritev_func(int sockfd, const struct iovec *iov, int iovcnt);
+typedef ssize_t rs_rrecv_func(int sockfd, void *buf, size_t len, int flags);
+typedef ssize_t rs_rrecvfrom_func(int sockfd, void *buf, size_t len, int flags,
+		             struct sockaddr *src_addr, socklen_t *addrlen);
+typedef ssize_t rs_rsendto_func(int sockfd, const void *buf, size_t len, int flags,
+                           const struct sockaddr *dest_addr, socklen_t addrlen);
+
+rs_rsocket_func* rs_socket;
+rs_rfcntl_func* rs_fcntl;
+rs_rlisten_func* rs_listen;
+rs_rbind_func* rs_bind;
+rs_rconnect_func* rs_connect;
+rs_rgetsockname_func* rs_getsockname;
+rs_rgetsockopt_func* rs_getsockopt;
+rs_rsetsockopt_func* rs_setsockopt;
+rs_rshutdown_func* rs_shutdown;
+rs_rpoll_func* rs_poll;
+rs_rsend_func* rs_send;
+rs_raccept_func* rs_accept;
+rs_rclose_func* rs_close;
+rs_rread_func* rs_read;
+rs_rreadv_func* rs_readv;
+rs_rwrite_func* rs_write;
+rs_rwritev_func* rs_writev;
+rs_rrecv_func* rs_recv;
+rs_rrecvfrom_func* rs_recvfrom;
+rs_rsendto_func* rs_sendto;
+
+jboolean loadRdmaFuncs(JNIEnv* env);
+
+/* Definitions taken from librdmacm/include/rdma/rsocket.h */
+#ifndef SOL_RDMA
+#define SOL_RDMA 0x10000
+#endif
+enum {
+        RDMA_SQSIZE,
+        RDMA_RQSIZE,
+        RDMA_INLINE,
+};