#!/sbin/runscript # ########################################################################################################### # Traffic Control startup script # # Copyright (c) 2009 iilluzion # # Distributed under GPL-2 ########################################################################################################### PROGRAM=$SVCNAME CONFIG=/etc/conf.d/$SVCNAME DEBUG=0 #1 opts="describe compile" ########################################################################################################### # # depend() { need net after firewall } ########################################################################################################### # # checkconfig() { if [ ! -e $CONFIG ] ; then eerror "You need to create $CONFIG first." return 1 fi } ########################################################################################################### # # bits() { RATE=0 R_RATE=$1 R_NUMBER=`echo "$R_RATE" | sed -e "s/[^0-9]//g"` R_UNIT=`echo "$R_RATE" | sed -e "s/[0-9]//g"` if [ "$R_UNIT" == "" ]; then R_UNIT="kbit" fi if [ "$R_UNIT" == "kbps" ]; then R_RATE=$(($R_NUMBER * 1024 * 8)) elif [ "$R_UNIT" == "mbps" ]; then R_RATE=$(($R_NUMBER * 1024 * 1024 * 8)) elif [ "$R_UNIT" == "mbit" ]; then R_RATE=$(($R_NUMBER * 1024 * 1024)) elif [ "$R_UNIT" == "kbit" ]; then R_RATE=$(($R_NUMBER * 1024)) elif [ "$R_UNIT" == "bps" ]; then R_RATE=$(($R_NUMBER * 8)) else echo "Unknown unit '$R_UNIT' (mbps, mbit, kbit, kbps, bps)" fi echo "$R_RATE" } ########################################################################################################### # # expand_leaf_qdisc() { case "$1" in pfifo) echo "pfifo limit 5";; sfq) echo "sfq perturb 10";; red) echo "red min $RED_MIN max $RED_MAX burst $RED_BURST limit $RED_LIMIT probability $RED_PROB avpkt $RED_AVPKT";; esac } ########################################################################################################### # # configure() { if [ ! -z $1 ]; then eval WAN_RATE="\$$1"_RATE WAN_RATE=`bits $WAN_RATE` # Calculaton of WAN classes rates WAN_SUB_RATE=$((WAN_RATE - (RATE_SUB_PERCENT * WAN_RATE / 100))) INTERACTIVE_RATE=$((WAN_SUB_RATE / 5)) PRIVILEGED_RATE=$((WAN_SUB_RATE / 2)) BESTEFFORT_RATE=$((WAN_SUB_RATE / 3)) DEV_RATE=${DEV_RATE:-$EGRESS_RATE} DEV_RATE=`bits $DEV_RATE` if [ $DEV_RATE -lt $WAN_RATE ]; then DEV_RATE=$WAN_RATE fi OUT_OF_WAN_RATE=$((DEV_RATE - WAN_RATE)) # Calculation of Queuing Discipline parameters INTERACTIVE_PRIO_LATENCY=50000 INTERACTIVE_PRIO_BURST=$((INTERACTIVE_RATE / 100 / 8)) INTERACTIVE_HFSC_DMAX=50000 INTERACTIVE_HFSC_UMAX=$((INTERACTIVE_RATE * INTERACTIVE_HFSC_DMAX / 1000 / 1000)) [ $INTERACTIVE_HFSC_UMAX -gt 1500 ] && INTERACTIVE_HFSC_UMAX=1500 PRIVILEGED_HFSC_DMAX=100000 PRIVILEGED_HFSC_UMAX=$((PRIVILEGED_RATE * PRIVILEGED_HFSC_DMAX / 1000 / 1000)) [ $PRIVILEGED_HFSC_UMAX -gt 1500 ] && PRIVILEGED_HFSC_UMAX=1500 # Random Early Detect (RED) parameters calculation: # min = maximum delay * rate (dalay ~ 200ms = 0.2sec) [b] # max = 3 * min [b] # avpkt = 1000 (MTU 1500) # limit = 8 * max [b] # burst = (min + min + max)/(3 * avpkt) [b] # probability = 0.02 RED_DELAY=200 RED_MIN=$((RED_DELAY * BESTEFFORT_RATE / 1000 / 8)) # devided on 8 since rate given in bit/s so we get bytes RED_MAX=$((3 * RED_MIN)) RED_AVPKT=1000 RED_PROB=0.02 RED_BURST=$(((RED_MIN + RED_MIN + RED_MAX) / (3 * RED_AVPKT))) RED_LIMIT=$((8 * RED_MAX)) # Setting leaf Queuing Disciplines parameters INTERACTIVE_LEAF_QDISC=`expand_leaf_qdisc $INTERACTIVE_LEAF_QDISC` PRIVILEGED_LEAF_QDISC=`expand_leaf_qdisc $PRIVILEGED_LEAF_QDISC` BESTEFFORT_LEAF_QDISC=`expand_leaf_qdisc $BESTEFFORT_LEAF_QDISC` LAN_LEAF_QDISC=`expand_leaf_qdisc $LAN_LEAF_QDISC` fi } ########################################################################################################### # # reset() { # Supported Queuing Disciplines QDISCS="prio|tbf|htb|hfsc|sfq|red|pfifo" tc qdisc show dev $DEV | grep -v "pfifo_fast" | egrep -q "$QDISCS" && $ECHO tc qdisc del dev $DEV root tc qdisc show dev $DEV | grep -v "pfifo_fast" | grep -q ingress && $ECHO tc qdisc del dev $DEV ingress if [ "$INGRESS_ALG" = "ifb" ] && [ ! -z $IFB_DEV ]; then $ECHO ip link set dev $IFB_DEV down fi } ########################################################################################################### # # set_leaf_qdisc() { PARENT_CLASSID=$1 PARENT_CLASSID=${PARENT_CLASSID:-1} if [ ! "$QDISC_CMD" = "prio" ]; then $ECHO tc qdisc add dev $DEV parent $PARENT_CLASSID:40 handle 40 $INTERACTIVE_LEAF_QDISC fi $ECHO tc qdisc add dev $DEV parent $PARENT_CLASSID:50 handle 50 $PRIVILEGED_LEAF_QDISC $ECHO tc qdisc add dev $DEV parent $PARENT_CLASSID:60 handle 60 $BESTEFFORT_LEAF_QDISC if [ $OUT_OF_WAN_RATE -gt 0 ]; then $ECHO tc qdisc add dev $DEV parent $PARENT_CLASSID:70 handle 70 $LAN_LEAF_QDISC fi $ECHO } ########################################################################################################### # # set_filters() { CLASS_TYPES="INTERACTIVE PRIVILEGED BESTEFFORT" if [ $OUT_OF_WAN_RATE -gt 0 ]; then CLASS_TYPES=$CLASS_TYPES" LAN" fi PRIVILEGED_FILTER_FLOWID=50 BESTEFFORT_FILTER_FLOWID=60 LAN_FILTER_FLOWID=70 for CLASS_TYPE in $CLASS_TYPES; do if [ "$QDISC_CMD" = "prio" -a "$CLASS_TYPE" = "INTERACTIVE" ]; then PARENT_CLASSID=1 INTERACTIVE_FILTER_FLOWID=1 else PARENT_CLASSID=$1 PARENT_CLASSID=${PARENT_CLASSID:-1} INTERACTIVE_FILTER_FLOWID=40 fi for FILTER_NUM in `seq 1 100`; do eval FILTER="\$$CLASS_TYPE"_FILTER_$FILTER_NUM [ -z "$FILTER" ] && break eval FILTER_FLOWID="\$$CLASS_TYPE"_FILTER_FLOWID $ECHO tc filter add dev $DEV parent $PARENT_CLASSID:0 $FILTER flowid $PARENT_CLASSID:$FILTER_FLOWID done done $ECHO } ########################################################################################################### # # set_htb() { $ECHO tc qdisc add dev $DEV root handle 1 htb default 60 $ECHO tc class add dev $DEV parent 1: classid 1:2 htb rate $DEV_RATE $ECHO tc class add dev $DEV parent 1:2 classid 1:30 htb rate $WAN_SUB_RATE $ECHO tc class add dev $DEV parent 1:30 classid 1:40 htb rate $INTERACTIVE_RATE prio 1 $ECHO tc class add dev $DEV parent 1:30 classid 1:50 htb rate $PRIVILEGED_RATE ceil $WAN_SUB_RATE prio 3 $ECHO tc class add dev $DEV parent 1:30 classid 1:60 htb rate $BESTEFFORT_RATE ceil $WAN_SUB_RATE prio 6 if [ $OUT_OF_WAN_RATE -gt 0 ]; then $ECHO tc class add dev $DEV parent 1:2 classid 1:70 htb rate $OUT_OF_WAN_RATE prio 7 fi set_leaf_qdisc $ECHO set_filters } ########################################################################################################### # # set_hfsc() { $ECHO tc qdisc add dev $DEV root handle 1 hfsc default 60 $ECHO tc class add dev $DEV parent 1: classid 1:2 hfsc sc rate $DEV_RATE ul rate $DEV_RATE $ECHO tc class add dev $DEV parent 1:2 classid 1:30 hfsc sc rate $WAN_SUB_RATE ul rate $WAN_SUB_RATE $ECHO tc class add dev $DEV parent 1:30 classid 1:40 hfsc sc umax $INTERACTIVE_HFSC_UMAX dmax $INTERACTIVE_HFSC_DMAX rate $INTERACTIVE_RATE ul rate $INTERACTIVE_RATE $ECHO tc class add dev $DEV parent 1:30 classid 1:50 hfsc sc umax $PRIVILEGED_HFSC_UMAX dmax $PRIVILEGED_HFSC_DMAX rate $PRIVILEGED_RATE ul rate $WAN_SUB_RATE $ECHO tc class add dev $DEV parent 1:30 classid 1:60 hfsc sc rate $BESTEFFORT_RATE ul rate $WAN_SUB_RATE if [ $OUT_OF_WAN_RATE -gt 0 ]; then $ECHO tc class add dev $DEV parent 1:2 classid 1:70 hfsc sc rate $OUT_OF_WAN_RATE ul rate $OUT_OF_WAN_RATE fi set_leaf_qdisc $ECHO set_filters } ########################################################################################################### # # set_prio() { PARENT_CLASSID=10 $ECHO tc qdisc add dev $DEV root handle 1 prio bands 2 priomap 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 # by default unclassified traffic goes to flowid 1:2 $ECHO tc qdisc add dev $DEV parent 1:1 handle 40: tbf rate $INTERACTIVE_RATE burst $INTERACTIVE_PRIO_BURST latency $INTERACTIVE_PRIO_LATENCY $ECHO tc qdisc add dev $DEV parent 1:2 handle $PARENT_CLASSID: htb default 60 $ECHO tc class add dev $DEV parent $PARENT_CLASSID: classid $PARENT_CLASSID:30 htb rate $WAN_SUB_RATE $ECHO tc class add dev $DEV parent $PARENT_CLASSID:30 classid $PARENT_CLASSID:50 htb rate $PRIVILEGED_RATE ceil $WAN_SUB_RATE prio 3 $ECHO tc class add dev $DEV parent $PARENT_CLASSID:30 classid $PARENT_CLASSID:60 htb rate $BESTEFFORT_RATE ceil $WAN_SUB_RATE prio 6 if [ $OUT_OF_WAN_RATE -gt 0 ]; then $ECHO tc class add dev $DEV parent 10:1 classid $PARENT_CLASSID:70 htb rate $OUT_OF_WAN_RATE prio 7 fi set_leaf_qdisc $PARENT_CLASSID $ECHO set_filters $PARENT_CLASSID } ########################################################################################################### # # set_ifb() { $ECHO ip link set dev $IFB_DEV up $ECHO tc qdisc add dev $DEV ingress handle ffff: $ECHO tc filter add dev $DEV parent ffff: protocol ip prio 10 u32 match u32 0 0 action mirred egress redirect dev $IFB_DEV > /dev/null 2>&1 } ########################################################################################################### # # set_police() { # Calculation of policing bursts # burst = rate / 17 (taken basing on experemental results) POLICE_BURST_SCALE=17 WAN_POLICE_BURST=$((WAN_RATE / POLICE_BURST_SCALE)) WAN_POLICE_FLOWID=1 $ECHO tc qdisc add dev $DEV handle ffff: ingress $ECHO tc filter add dev $DEV parent ffff: protocol ip prio 999 u32 match ip src 0.0.0.0/0 police rate $WAN_RATE burst $WAN_POLICE_BURST drop flowid :$WAN_POLICE_FLOWID $ECHO } ########################################################################################################### # # set_cpolice() { # Calculation of policing bursts # burst = rate / 17 (taken basing on experemental results) POLICE_BURST_SCALE=17 INTERACTIVE_POLICE_BURST=$((INTERACTIVE_RATE / POLICE_BURST_SCALE)) PRIVILEGED_POLICE_BURST=$((PRIVILEGED_RATE / POLICE_BURST_SCALE)) BESTEFFORT_POLICE_BURST=$((BESTEFFORT_RATE / POLICE_BURST_SCALE)) CLASS_TYPES="INTERACTIVE PRIVILEGED" INTERACTIVE_POLICE_FLOWID=1 PRIVILEGED_POLICE_FLOWID=2 $ECHO tc qdisc add dev $DEV handle ffff: ingress for CLASS_TYPE in $CLASS_TYPES; do for FILTER_NUM in `seq 1 100`; do eval FILTER="\$$CLASS_TYPE"_FILTER_$FILTER_NUM [ -z "$FILTER" ] && break eval FILTER_FLOWID="\$$CLASS_TYPE"_POLICE_FLOWID eval FILTER_RATE="\$$CLASS_TYPE"_RATE eval FILTER_BURST="\$$CLASS_TYPE"_POLICE_BURST $ECHO tc filter add dev $DEV parent ffff: $FILTER police rate $FILTER_RATE burst $FILTER_BURST continue flowid :$FILTER_FLOWID done done $ECHO tc filter add dev $DEV parent ffff: protocol ip prio 999 u32 match ip src 0.0.0.0/0 police rate $BESTEFFORT_RATE burst $BESTEFFORT_POLICE_BURST drop flowid :3 $ECHO } ########################################################################################################### # # get_stats() { echo $DEV Statistics echo echo " Classes:" echo "--------------------------" $ECHO tc -s class show dev $DEV echo echo " Leaf Queuing Disciplines:" echo "--------------------------" $ECHO tc -s qdisc show dev $DEV echo echo " EGRESS Filters:" echo "--------------------------" $ECHO tc -s filter show dev $DEV $ECHO tc -s filter show dev $DEV parent 10: # if PRIO qdisc is applied echo echo " INGRESS Policing Filters:" echo "--------------------------" $ECHO tc -s filter show dev $DEV parent ffff: echo } ########################################################################################################### # # compile() { DEBUG=1 start } ########################################################################################################### # # start() { checkconfig || return 1 if [ $DEBUG -gt 0 ]; then ECHO="echo" else ebegin "Starting QoS at $DEV" fi reset for LINK_DIRECTION in EGRESS INGRESS; do configure $LINK_DIRECTION eval ALG_CMD="\$$LINK_DIRECTION"_ALG if [ ! "$ALG_CMD" = "none" ]; then set_$ALG_CMD fi done describe > /tmp/$$ if [ $DEBUG -eq 0 ]; then eend $? fi } ########################################################################################################### # # stop() { checkconfig || return 1 if [ $DEBUG -gt 0 ]; then ECHO="echo" else ebegin "Stopping QoS at $DEV" fi reset if [ $DEBUG -eq 0 ]; then eend $? fi } ########################################################################################################### # # restart() { stop start } ########################################################################################################### # # describe() { checkconfig || return 1 get_stats }