#!/bin/sh # Wonder Shaper # please read the README before filling out these values # # Set the following values to somewhat less than your actual download # and uplink speed. In kilobits. Also set the device that is to be shaped. # All config needs to be done in /etc/config/wshaper . /lib/functions.sh . /lib/functions/network.sh config_load wshaper for s in downlink uplink network nopriohostdst nopriohostsrc noprioportdst noprioportsrc; do config_get $s settings $s done if ! network_get_device device "$network"; then logger -t wondershaper "Error: Could not find the device for network $network, aborting." exit 1 fi [ -z "$downlink" ] && logger -t wondershaper "Error: Downlink speed not set, aborting." && exit 1 [ -z "$uplink" ] && logger -t wondershaper "Error: Uplink speed not set, aborting." && exit 1 MODULES='sch_ingress sch_sfq sch_htb cls_u32 act_police' DOWNLINK="$downlink" UPLINK="$uplink" DEV="$device" # low priority OUTGOING traffic - you can leave this blank if you want # low priority source netmasks NOPRIOHOSTSRC="$nopriohostsrc" # low priority destination netmasks NOPRIOHOSTDST="$nopriohostdst" # low priority source ports NOPRIOPORTSRC="$noprioportsrc" # low priority destination ports NOPRIOPORTDST="$noprioportdst" if [ "$1" = "status" ] then tc -s qdisc ls dev $DEV tc -s class ls dev $DEV exit fi # clean existing down- and uplink qdiscs, hide errors tc qdisc del dev $DEV root 2> /dev/null > /dev/null tc qdisc del dev $DEV ingress 2> /dev/null > /dev/null if [ "$1" = "stop" ] then for i in $MODULES ; do rmmod $i done exit fi for i in $MODULES ; do insmod $i done ###### uplink # install root HTB, point default traffic to 1:20: tc qdisc add dev $DEV root handle 1: htb default 20 # shape everything at $UPLINK speed - this prevents huge queues in your # DSL modem which destroy latency: tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst 6k # high prio class 1:10: tc class add dev $DEV parent 1:1 classid 1:10 htb rate ${UPLINK}kbit \ burst 6k prio 1 # bulk & default class 1:20 - gets slightly less traffic, # and a lower priority: tc class add dev $DEV parent 1:1 classid 1:20 htb rate $((9*$UPLINK/10))kbit \ burst 6k prio 2 tc class add dev $DEV parent 1:1 classid 1:30 htb rate $((8*$UPLINK/10))kbit \ burst 6k prio 2 # all get Stochastic Fairness: tc qdisc add dev $DEV parent 1:10 handle 10: sfq perturb 10 tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10 tc qdisc add dev $DEV parent 1:30 handle 30: sfq perturb 10 # TOS Minimum Delay (ssh, NOT scp) in 1:10: tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \ match ip tos 0x10 0xff flowid 1:10 # ICMP (ip protocol 1) in the interactive class 1:10 so we # can do measurements & impress our friends: tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \ match ip protocol 1 0xff flowid 1:10 # To speed up downloads while an upload is going on, put ACK packets in # the interactive class: tc filter add dev $DEV parent 1: 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 1:10 # rest is 'non-interactive' ie 'bulk' and ends up in 1:20 # some traffic however suffers a worse fate for a in $NOPRIOPORTDST do tc filter add dev $DEV parent 1: protocol ip prio 14 u32 \ match ip dport $a 0xffff flowid 1:30 done for a in $NOPRIOPORTSRC do tc filter add dev $DEV parent 1: protocol ip prio 15 u32 \ match ip sport $a 0xffff flowid 1:30 done for a in $NOPRIOHOSTSRC do tc filter add dev $DEV parent 1: protocol ip prio 16 u32 \ match ip src $a flowid 1:30 done for a in $NOPRIOHOSTDST do tc filter add dev $DEV parent 1: protocol ip prio 17 u32 \ match ip dst $a flowid 1:30 done # rest is 'non-interactive' ie 'bulk' and ends up in 1:20 tc filter add dev $DEV parent 1: protocol ip prio 18 u32 \ match ip dst 0.0.0.0/0 flowid 1:20 ########## downlink ############# # slow downloads down to somewhat less than the real speed to prevent # queuing at our ISP. Tune to see how high you can set it. # ISPs tend to have *huge* queues to make sure big downloads are fast # # attach ingress policer: tc qdisc add dev $DEV handle ffff: ingress # filter *everything* to it (0.0.0.0/0), drop everything that's # coming in too fast: tc filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip src \ 0.0.0.0/0 police rate ${DOWNLINK}kbit burst 10k drop flowid :1 logger -t wondershaper "Wondershaper was started on device $device."