shorewall_code/Shorewall/tcstart

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#! /bin/sh
# tcstart from tc4shorewall Version 0.5
# (c) 2005 Arne Bernin <arne@ucbering.de>
# published under GPL Version 2
if [ -z "$COMMAND" ]; then
SHOREWALL_DIR=.
SHARED_DIR=/usr/share/shorewall
FUNCTIONS=$SHARED_DIR/functions
. $FUNCTIONS
TMP_DIR=
TMP_DIR=$(mktempdir)
fi
setup_traffic_shaping()
{
local mtu r2q tc_all_devices device mark rate ceil prio options
mtu=1500
r2q=10
rate_to_kbit() {
local rateunit rate
rate=$1
rateunit=$( echo $rate | sed -e 's/[0-9]*//')
rate=$( echo $rate | sed -e 's/[a-z]*//g')
case $rateunit in
kbit)
rate=$rate
;;
mbit)
rate=$(expr $rate \* 1024)
;;
mbps)
rate=$(expr $rate \* 8192)
;;
kbps)
rate=$(expr $rate \* 8)
;;
*)
rate=$(expr $rate / 128)
;;
esac
echo $rate
}
calculate_quantum() {
local rate
rate=$1
rate=$(rate_to_kbit $rate)
rate=$(expr $rate \* 128 / $r2q )
if [ $rate -lt $mtu ] ; then
echo $mtu
else
echo $rate
fi
}
# get given outbandwidth for device
get_outband_for_dev() {
local device inband outband
while read device inband outband; do
expandv device inband outband
tcdev="$device $inband $outband"
if [ "$1" = "$device" ] ; then
echo $outband
return
fi
done < $TMP_DIR/tcdevices
}
check_tcclasses_options() {
while [ $# -gt 1 ]; do
shift
case $1 in
default|tcp-ack|tos-minimize-delay|tos-maximize-throughput|tos-maximize-reliability|tos-minimize-cost|tos-normal-service)
;;
*)
echo $1
return 1
;;
esac
done
return 0
}
get_defmark_for_dev() {
local searchdev searchmark device ceil prio options
searchdev=$1
while read device mark rate ceil prio options; do
expandv device mark rate ceil prio options
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
tcdev="$device $mark $rate $ceil $prio $options"
if [ "$searchdev" = "$device" ] ; then
list_search "default" $options && echo $mark &&return 0
fi
done < $TMP_DIR/tcclasses
return 1
}
check_defmark_for_dev() {
get_defmark_for_dev $1 >/dev/null
}
validate_tcdevices_file() {
echo "Validating tcdevices file..."
local device local device inband outband
while read device inband outband; do
expandv device inband outband
tcdev="$device $inband $outband"
check_defmark_for_dev $device || fatal_error "Option default is not defined for any class in tcclasses for interface $device"
case $interface in
*:*|+)
fatal_error "Invalid Interface Name: $interface"
;;
esac
list_search $device $devices && fatal_error "Interface $device is defined more than once in tcdevices"
tc_all_devices="$tc_all_devices $device"
done < $TMP_DIR/tcdevices
}
validate_tcclasses_file() {
echo "Validating tcclasses file..."
local classlist device mark rate ceil prio bandw wrongopt allopts opt
allopts=""
while read device mark rate ceil prio options; do
expandv device mark rate ceil prio options
tcdev="$device $mark $rate $ceil $prio $options"
ratew=$(get_outband_for_dev $device)
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
for opt in $options; do
list_search "$device-$opt" $allopts && fatal_error "option $opt already defined in a chain for interface $device in tcclasses"
allopts="$allopts $device-$opt"
done
wrongopt=$(check_tcclasses_options $options) || fatal_error "unknown option $wrongopt for class iface $device mark $mark in tcclasses file"
if [ -z "$ratew" ] ; then
fatal_error "device $device seems not to be configured in tcdevices"
fi
list_search "$device-$mark" $classlist && fatal_error "Mark $mark for interface $device defined more than once in tcclasses"
classlist="$classlist $device-$mark"
done < $TMP_DIR/tcclasses
}
add_root_tc() {
local defmark
defmark=$(get_defmark_for_dev $device)
tc qdisc del dev $device root 2>/dev/null > /dev/null
tc qdisc del dev $device ingress 2>/dev/null > /dev/null
run_tc qdisc add dev $device root handle 1: htb default 1$defmark
run_tc class add dev $device parent 1: classid 1:1 htb rate $outband
run_tc qdisc add dev $device handle ffff: ingress
run_tc filter add dev $device parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${inband} burst 10k drop flowid :1
}
add_tc_class() {
local full
#set -x
full=$(get_outband_for_dev $device)
full=$(rate_to_kbit $full)
#set -x
if [ -z "$prio" ] ; then
prio=1
fi
case $rate in
*full*)
rate=$(echo $rate | sed -e "s/full/$full/")
rate="$(($rate))kbit"
;;
esac
case $ceil in
*full*)
ceil=$(echo $ceil | sed -e "s/full/$full/")
ceil="$(($ceil))kbit"
;;
esac
#set +x
run_tc class add dev $device parent 1:1 classid 1:1$mark htb rate $rate ceil $ceil prio $prio quantum $(calculate_quantum $rate)
run_tc qdisc add dev $device parent 1:1$mark handle 1$mark: sfq perturb 10
# add filters
run_tc filter add dev $device protocol ip parent 1:0 prio 1 handle $mark fw classid 1:1$mark
# options
list_search "tcp-ack" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip protocol 6 0xff match u8 0x05 0x0f at 0 match u16 0x0000 0xffc0 at 2 match u8 0x10 0xff at 33 flowid 1:1$mark
list_search "tos-minimize-delay" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip tos 0x10 0xff flowid 1:1$mark
list_search "tos-minimize-cost" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip tos 0x02 0xff flowid 1:1$mark
list_search "tos-maximize-troughput" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip tos 0x08 0xff flowid 1:1$mark
list_search "tos-minimize-reliability" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip tos 0x04 0xff flowid 1:1$mark
list_search "tos-normal-service" $options && run_tc filter add dev $device parent 1:0 protocol ip prio 10 u32 match ip tos 0x00 0xff flowid 1:1$mark
# tcp
set +x
}
strip_file tcdevices
strip_file tcclasses
validate_tcdevices_file
validate_tcclasses_file
if [ -s $TMP_DIR/tcdevices ]; then
echo "Processing tcdevices..."
while read device inband outband defmark ackmark; do
expandv device inband outband defmark ackmark
tcdev="$device $inband $outband"
add_root_tc
progress_message " TC Device $tcdev Added."
done < $TMP_DIR/tcdevices
fi
if [ -s $TMP_DIR/tcclasses ]; then
echo "Processing tcclasses..."
while read device mark rate ceil prio options; do
expandv device mark rate ceil prio options
tcdev="$device $mark $rate $ceil $prio $options"
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
add_tc_class
progress_message " TC Class \"$tcdev\" Added."
done < $TMP_DIR/tcclasses
fi
}
setup_traffic_shaping
[ -n "$COMMAND" ] || rm -rf $TMP_DIR