--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#ifndef CEPH_MDATAPING_H
+#define CEPH_MDATAPING_H
+
+#include "msg/Message.h"
+#include "messages/MPing.h"
+#include "include/encoding.h"
+#if defined(HAVE_XIO)
+extern "C" {
+#include "libxio.h"
+}
+#else
+struct xio_reg_mem {};
+#endif /* HAVE_XIO */
+
+typedef void (*mdata_hook_func)(struct xio_reg_mem *mp);
+
+class MDataPing : public Message {
+
+ public:
+
+ static const int HEAD_VERSION = 1;
+ static const int COMPAT_VERSION = 1;
+
+ std::string tag;
+ uint32_t counter;
+ mdata_hook_func mdata_hook;
+ struct xio_reg_mem mp;
+ bool free_data;
+
+ MDataPing()
+ : Message(MSG_DATA_PING, HEAD_VERSION, COMPAT_VERSION),
+ mdata_hook(NULL),
+ free_data(false)
+ {}
+
+ struct xio_reg_mem *get_mp()
+ {
+ return ∓
+ }
+
+ void set_rdma_hook(mdata_hook_func hook)
+ {
+ mdata_hook = hook;
+ }
+
+private:
+ ~MDataPing() override
+ {
+ if (mdata_hook)
+ mdata_hook(&mp);
+
+ if (free_data) {
+ const std::list<buffer::ptr>& buffers = data.buffers();
+ list<bufferptr>::const_iterator pb;
+ for (pb = buffers.begin(); pb != buffers.end(); ++pb) {
+ free((void*) pb->c_str());
+ }
+ }
+ }
+
+public:
+ void decode_payload() override {
+ bufferlist::iterator p = payload.begin();
+ ::decode(tag, p);
+ ::decode(counter, p);
+ }
+ void encode_payload(uint64_t features) override {
+ ::encode(tag, payload);
+ ::encode(counter, payload);
+ }
+
+ const char *get_type_name() const override { return "data_ping"; }
+
+ void print(ostream& out) const override {
+ out << get_type_name() << " " << tag << " " << counter;
+ }
+};
+
+#endif /* CEPH_MDATAPING_H */