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-rw-r--r--src/openvpn/shaper.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/openvpn/shaper.c b/src/openvpn/shaper.c
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+++ b/src/openvpn/shaper.c
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+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2002-2010 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
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#include "syshead.h"
+#include "shaper.h"
+#include "memdbg.h"
+
+#ifdef ENABLE_FEATURE_SHAPER
+
+/*
+ * We want to wake up in delay microseconds. If timeval is larger
+ * than delay, set timeval to delay.
+ */
+bool
+shaper_soonest_event (struct timeval *tv, int delay)
+{
+ bool ret = false;
+ if (delay < 1000000)
+ {
+ if (tv->tv_sec)
+ {
+ tv->tv_sec = 0;
+ tv->tv_usec = delay;
+ ret = true;
+ }
+ else if (delay < tv->tv_usec)
+ {
+ tv->tv_usec = delay;
+ ret = true;
+ }
+ }
+ else
+ {
+ const int sec = delay / 1000000;
+ const int usec = delay % 1000000;
+
+ if (sec < tv->tv_sec)
+ {
+ tv->tv_sec = sec;
+ tv->tv_usec = usec;
+ ret = true;
+ }
+ else if (sec == tv->tv_sec)
+ {
+ if (usec < tv->tv_usec)
+ {
+ tv->tv_usec = usec;
+ ret = true;
+ }
+ }
+ }
+#ifdef SHAPER_DEBUG
+ dmsg (D_SHAPER_DEBUG, "SHAPER shaper_soonest_event sec=%d usec=%d ret=%d",
+ (int)tv->tv_sec, (int)tv->tv_usec, (int)ret);
+#endif
+ return ret;
+}
+
+void
+shaper_reset_wakeup (struct shaper *s)
+{
+ CLEAR (s->wakeup);
+}
+
+void
+shaper_msg (struct shaper *s)
+{
+ msg (M_INFO, "Output Traffic Shaping initialized at %d bytes per second",
+ s->bytes_per_second);
+}
+
+#else
+static void dummy(void) {}
+#endif /* ENABLE_FEATURE_SHAPER */