1 files changed, 51 insertions, 0 deletions
diff --git a/src/openvpn/mstats.h b/src/openvpn/mstats.h
new file mode 100644
index 0000000..dab05fe
--- /dev/null
+++ b/src/openvpn/mstats.h
@@ -0,0 +1,51 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2011 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program 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 for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Maintain usage stats in a memory-mapped file
+ */
+
+#if !defined(OPENVPN_MEMSTATS_H) && defined(ENABLE_MEMSTATS)
+#define OPENVPN_MEMSTATS_H
+
+#include "basic.h"
+
+/* this struct is mapped to the file */
+struct mmap_stats {
+  counter_type link_read_bytes;   /* counter_type can be assumed to be a uint64_t */
+  counter_type link_write_bytes;
+  int n_clients;
+
+# define MSTATS_UNDEF   0
+# define MSTATS_ACTIVE  1
+# define MSTATS_EXPIRED 2
+  int state;
+};
+
+extern volatile struct mmap_stats *mmap_stats; /* GLOBAL */
+
+void mstats_open(const char *fn);
+void mstats_close(void);
+
+#endif