#!/bin/bash -x # Wonder Shaper # please read the README before filling out these values # true original here: http://lartc.org/wondershaper/ # by bert hubert # this version has some documentation added by hanscees.com 10-2005 # #see what is happening with the command: #tc -s class show dev eth1 # added stuff to make sure the upload from my local webserver does # not kill me surfing happily: #src port 80 low prio: from webserver to internet #dst port 53 high prio: dns request from us to internet #syns to internet high prio: we surf!o #see #http://lartc.org/howto/lartc.adv-filter.html#LARTC.ADV-FILTER.U32 # 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. ##these are values for adsl 1MB up and 2MB down. DOWNLINK=1920 UPLINK=930 DEV=eth1 # low priority OUTGOING traffic - you can leave this blank if you want # low priority source netmasks NOPRIOHOSTSRC= # low priority destination netmasks NOPRIOHOSTDST= # low priority source ports NOPRIOPORTSRC=80 # low priority destination ports NOPRIOPORTDST=1214 #high priority source ports (added by hanscees.com) HIGHPRIOPORTDST=53 # Now remove the following two lines :-) ######################################################### 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 exit fi ###### uplink # install root CBQ tc qdisc add dev $DEV root handle 1: cbq avpkt 1000 bandwidth 10mbit # shape everything at $UPLINK speed - this prevents huge queues in your # DSL modem which destroy latency: # main class tc class add dev $DEV parent 1: classid 1:1 cbq rate ${UPLINK}kbit \ allot 1500 prio 5 bounded isolated # high prio class 1:10: tc class add dev $DEV parent 1:1 classid 1:10 cbq rate ${UPLINK}kbit \ allot 1600 prio 1 avpkt 1000 # bulk and default class 1:20 - gets slightly less traffic, # and a lower priority: tc class add dev $DEV parent 1:1 classid 1:20 cbq rate $[9*$UPLINK/10]kbit \ allot 1600 prio 2 avpkt 1000 # 'traffic we hate' tc class add dev $DEV parent 1:1 classid 1:30 cbq rate $[8*$UPLINK/10]kbit \ allot 1600 prio 2 avpkt 1000 # 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 # start filters # 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 11 u32 \ match ip protocol 1 0xff flowid 1:10 # prioritize small packets (<64 bytes) #and ack packets tc filter add dev $DEV parent 1: protocol ip prio 12 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 #match u8 0x10 0xff at 33 \ added by hansces.com #see #http://lartc.org/howto/lartc.adv-filter.html#LARTC.ADV-FILTER.U32 # add some ports that are high prio #HIGHPRIOPORTDST=53 by hancees.com for a in $HIGHPRIOPORTDST do tc filter add dev $DEV parent 1: protocol ip prio 13 u32 \ match ip dport $a 0xffff flowid 1:10 done # 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 ############# #from http://lartc.org/howto/lartc.qdisc.terminology.html # Userspace programs # ^ # | # +---------------+-----------------------------------------+ # | Y | # | -------> IP Stack | # | | | | # | | Y | # | | Y | # | ^ | | # | | / ----------> Forwarding -> | # | ^ / | | # | |/ Y | # | | | | # | ^ Y /-qdisc1-\ | # | | Egress /--qdisc2--\ | # --->->Ingress Classifier ---qdisc3---- | -> # | Qdisc \__qdisc4__/ | # | \-qdiscN_/ | # | | # +----------------------------------------------------------+ #Thanks to Jamal Hadi Salim for this ASCII representation. # #The big block represents the kernel. The leftmost arrow represents traffic entering your machine from the #network. It is then fed to the Ingress Qdisc which may apply Filters to a packet, and decide to drop it. #This is called 'Policing'. #This happens at a very early stage, before it has seen a lot of the kernel. It is therefore a very good #place to drop traffic very early, without consuming a lot of CPU power. # 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 "wshaper finished"