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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) 2002-2021 OpenVPN 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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=%" PRIi64 " usec=%ld ret=%d",
(int64_t)tv->tv_sec, (long)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 /* ifdef ENABLE_FEATURE_SHAPER */
static void
dummy(void)
{
}
#endif /* ENABLE_FEATURE_SHAPER */
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