#!/bin/bash
#
# Copyright (c) 2006 Mellanox Technologies. All rights reserved.
#
# This Software is licensed under one of the following licenses:
#
# 1) under the terms of the "Common Public License 1.0" a copy of which is
#    available from the Open Source Initiative, see
#    http://www.opensource.org/licenses/cpl.php.
#
# 2) under the terms of the "The BSD License" a copy of which is
#    available from the Open Source Initiative, see
#    http://www.opensource.org/licenses/bsd-license.php.
#
# 3) under the terms of the "GNU General Public License (GPL) Version 2" a
#    copy of which is available from the Open Source Initiative, see
#    http://www.opensource.org/licenses/gpl-license.php.
#
# Licensee has the right to choose one of the above licenses.
#
# Redistributions of source code must retain the above copyright
# notice and one of the license notices.
#
# Redistributions in binary form must reproduce both the above copyright
# notice, one of the license notices in the documentation
# and/or other materials provided with the distribution.
#

# Save original sysctl values
sysctl_orig=/var/cache/sysctl_perf_tuning

load()
{
	if [ -f $sysctl_orig ]; then
		/bin/rm -f $sysctl_orig
	fi

	umask 022
	touch $sysctl_orig
	/sbin/sysctl net.ipv4.tcp_timestamps		>> $sysctl_orig
	/sbin/sysctl net.ipv4.tcp_sack			>> $sysctl_orig
	/sbin/sysctl net.core.netdev_max_backlog	>> $sysctl_orig
	/sbin/sysctl net.core.rmem_max			>> $sysctl_orig
	/sbin/sysctl net.core.wmem_max			>> $sysctl_orig
	/sbin/sysctl net.core.rmem_default		>> $sysctl_orig
	/sbin/sysctl net.core.wmem_default		>> $sysctl_orig
	/sbin/sysctl net.core.optmem_max		>> $sysctl_orig
	/sbin/sysctl net.ipv4.tcp_rmem			>> $sysctl_orig
	/sbin/sysctl net.ipv4.tcp_wmem			>> $sysctl_orig
	/sbin/sysctl net.ipv4.tcp_low_latency		>> $sysctl_orig

	/sbin/sysctl -q -w net.ipv4.tcp_timestamps=0
	/sbin/sysctl -q -w net.ipv4.tcp_sack=1
	/sbin/sysctl -q -w net.core.netdev_max_backlog=250000
	/sbin/sysctl -q -w net.core.rmem_max=4194304
	/sbin/sysctl -q -w net.core.wmem_max=4194304
	/sbin/sysctl -q -w net.core.rmem_default=4194304
	/sbin/sysctl -q -w net.core.wmem_default=4194304
	/sbin/sysctl -q -w net.core.optmem_max=4194304
	/sbin/sysctl -q -w net.ipv4.tcp_rmem="4096 87380 4194304"
	/sbin/sysctl -q -w net.ipv4.tcp_wmem="4096 65536 4194304"
	/sbin/sysctl -q -w net.ipv4.tcp_low_latency=1
}

unload()
{
	if [ ! -f $sysctl_orig ]; then
		return
	fi

	/sbin/sysctl -q -p $sysctl_orig
	/bin/rm -f $sysctl_orig
}

$1