net/wshaper/files/wshaper.htb

   1 #!/bin/sh
   2 # Wonder Shaper
   3 # please read the README before filling out these values
   4 #
   5 # Set the following values to somewhat less than your actual download
   6 # and uplink speed. In kilobits. Also set the device that is to be shaped.
   7
   8 DOWNLINK=2000
   9 UPLINK=240
  10 DEV=eth0
  11
  12 # low priority OUTGOING traffic - you can leave this blank if you want
  13 # low priority source netmasks
  14 NOPRIOHOSTSRC=
  15
  16 # low priority destination netmasks
  17 NOPRIOHOSTDST=
  18
  19 # low priority source ports
  20 NOPRIOPORTSRC=
  21
  22 # low priority destination ports
  23 NOPRIOPORTDST="21"
  24
  25 if [ "$1" = "status" ]
  26 then
  27         tc -s qdisc ls dev $DEV
  28         tc -s class ls dev $DEV
  29         exit
  30 fi
  31
  32 # clean existing down- and uplink qdiscs, hide errors
  33 tc qdisc del dev $DEV root    2> /dev/null > /dev/null
  34 tc qdisc del dev $DEV ingress 2> /dev/null > /dev/null
  35
  36 ###### uplink
  37
  38 # install root HTB, point default traffic to 1:20:
  39
  40 tc qdisc add dev $DEV root handle 1: htb default 20
  41
  42 # shape everything at $UPLINK speed - this prevents huge queues in your
  43 # DSL modem which destroy latency:
  44
  45 tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst 6k
  46
  47 # high prio class 1:10:
  48
  49 tc class add dev $DEV parent 1:1 classid 1:10 htb rate ${UPLINK}kbit \
  50    burst 6k prio 1
  51
  52 # bulk & default class 1:20 - gets slightly less traffic,
  53 # and a lower priority:
  54
  55 tc class add dev $DEV parent 1:1 classid 1:20 htb rate $((9*$UPLINK/10))kbit \
  56    burst 6k prio 2
  57
  58 tc class add dev $DEV parent 1:1 classid 1:30 htb rate $((8*$UPLINK/10))kbit \
  59    burst 6k prio 2
  60
  61 # all get Stochastic Fairness:
  62 tc qdisc add dev $DEV parent 1:10 handle 10: sfq perturb 10
  63 tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10
  64 tc qdisc add dev $DEV parent 1:30 handle 30: sfq perturb 10
  65
  66 # TOS Minimum Delay (ssh, NOT scp) in 1:10:
  67
  68 tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
  69       match ip tos 0x10 0xff  flowid 1:10
  70
  71 # ICMP (ip protocol 1) in the interactive class 1:10 so we
  72 # can do measurements & impress our friends:
  73 tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
  74         match ip protocol 1 0xff flowid 1:10
  75
  76 # To speed up downloads while an upload is going on, put ACK packets in
  77 # the interactive class:
  78
  79 tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
  80    match ip protocol 6 0xff \
  81    match u8 0x05 0x0f at 0 \
  82    match u16 0x0000 0xffc0 at 2 \
  83    match u8 0x10 0xff at 33 \
  84    flowid 1:10
  85
  86 # rest is 'non-interactive' ie 'bulk' and ends up in 1:20
  87
  88 # some traffic however suffers a worse fate
  89 for a in $NOPRIOPORTDST
  90 do
  91         tc filter add dev $DEV parent 1: protocol ip prio 14 u32 \
  92            match ip dport $a 0xffff flowid 1:30
  93 done
  94
  95 for a in $NOPRIOPORTSRC
  96 do
  97         tc filter add dev $DEV parent 1: protocol ip prio 15 u32 \
  98            match ip sport $a 0xffff flowid 1:30
  99 done
 100
 101 for a in $NOPRIOHOSTSRC
 102 do
 103         tc filter add dev $DEV parent 1: protocol ip prio 16 u32 \
 104            match ip src $a flowid 1:30
 105 done
 106
 107 for a in $NOPRIOHOSTDST
 108 do
 109         tc filter add dev $DEV parent 1: protocol ip prio 17 u32 \
 110            match ip dst $a flowid 1:30
 111 done
 112
 113 # rest is 'non-interactive' ie 'bulk' and ends up in 1:20
 114
 115 tc filter add dev $DEV parent 1: protocol ip prio 18 u32 \
 116    match ip dst 0.0.0.0/0 flowid 1:20
 117
 118
 119 ########## downlink #############
 120 # slow downloads down to somewhat less than the real speed  to prevent
 121 # queuing at our ISP. Tune to see how high you can set it.
 122 # ISPs tend to have *huge* queues to make sure big downloads are fast
 123 #
 124 # attach ingress policer:
 125
 126 tc qdisc add dev $DEV handle ffff: ingress
 127
 128 # filter *everything* to it (0.0.0.0/0), drop everything that's
 129 # coming in too fast:
 130
 131 tc filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip src \
 132    0.0.0.0/0 police rate ${DOWNLINK}kbit burst 10k drop flowid :1