mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-14 07:03:44 +01:00
129 lines
4.1 KiB
Bash
129 lines
4.1 KiB
Bash
#!/bin/bash
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# Written by Mike Perry
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# Based on instructions from Dan Singletary's ADSL Bandwidth Management HOWTO
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# http://www.faqs.org/docs/Linux-HOWTO/ADSL-Bandwidth-Management-HOWTO.html
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# This script is Public Domain.
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# The following configuration works well for a ~5Mbit tor node. It requires
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# that you place your Tor traffic on a separate IP from the rest of your
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# traffic.
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# BEGIN DEVICE PARAMETERS
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DEV=eth0
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BOX_IP=42.42.42.42
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TOR_IP=43.43.43.43
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# Average ping to most places on the net, milliseconds
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RTT_LATENCY=40
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# END DEVICE PARAMETERS
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# BEGIN UPLOAD PARAMETERS
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# RATE_UP must be less than your connection's upload capacity. If it is
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# larger, then the bottleneck will be at your router's queue, which you
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# do not control. This will cause congestion and a revert to normal TCP
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# fairness no matter what the queing priority is.
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RATE_UP=5000
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# RATE_UP_TOR is the minimum speed your Tor connections will have.
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# They will have at least this much bandwidth for upload
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RATE_UP_TOR=1500
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# RATE_UP_TOR_CEIL is the maximum rate allowed for all Tor trafic
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RATE_UP_TOR_CEIL=5000
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CHAIN=OUTPUT
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#CHAIN=PREROUTING
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#CHAIN=POSTROUTING
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# END UPLOAD PARAMETERS
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MTU=1500
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AVG_PKT=900
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# END USER TUNABLE PARAMETERS
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# The queue size should be no larger than your bandwidth-delay
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# product. This is RT latency*bandwidth/MTU/2
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BDP=$(expr $RTT_LATENCY \* $RATE_UP / $AVG_PKT)
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# Further research indicates that the BDP calculations should use
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# RTT/sqrt(n) where n is the expected number of active connections..
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BDP=$(expr $BDP / 4)
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if [ "$1" = "status" ]
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then
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echo "[qdisc]"
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tc -s qdisc show dev $DEV
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tc -s qdisc show dev imq0
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echo "[class]"
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tc -s class show dev $DEV
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tc -s class show dev imq0
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echo "[filter]"
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tc -s filter show dev $DEV
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tc -s filter show dev imq0
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echo "[iptables]"
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iptables -t mangle -L TORSHAPER-OUT -v -x 2> /dev/null
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exit
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fi
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# Reset everything to a known state (cleared)
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tc qdisc del dev $DEV root 2> /dev/null > /dev/null
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tc qdisc del dev imq0 root 2> /dev/null > /dev/null
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iptables -t mangle -D POSTROUTING -o $DEV -j TORSHAPER-OUT 2> /dev/null > /dev/null
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iptables -t mangle -D PREROUTING -o $DEV -j TORSHAPER-OUT 2> /dev/null > /dev/null
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iptables -t mangle -D OUTPUT -o $DEV -j TORSHAPER-OUT 2> /dev/null > /dev/null
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iptables -t mangle -F TORSHAPER-OUT 2> /dev/null > /dev/null
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iptables -t mangle -X TORSHAPER-OUT 2> /dev/null > /dev/null
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ip link set imq0 down 2> /dev/null > /dev/null
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rmmod imq 2> /dev/null > /dev/null
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if [ "$1" = "stop" ]
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then
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echo "Shaping removed on $DEV."
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exit
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fi
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# Outbound Shaping (limits total bandwidth to RATE_UP)
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ip link set dev $DEV qlen $BDP
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# Add HTB root qdisc, default is high prio
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tc qdisc add dev $DEV root handle 1: htb default 20
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# Add main rate limit class
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tc class add dev $DEV parent 1: classid 1:1 htb rate ${RATE_UP}kbit
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# Create the two classes, giving Tor at least RATE_UP_TOR kbit and capping
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# total upstream at RATE_UP so the queue is under our control.
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tc class add dev $DEV parent 1:1 classid 1:20 htb rate $(expr $RATE_UP - $RATE_UP_TOR)kbit ceil ${RATE_UP}kbit prio 0
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tc class add dev $DEV parent 1:1 classid 1:21 htb rate $[$RATE_UP_TOR]kbit ceil ${RATE_UP_TOR_CEIL}kbit prio 10
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# Start up pfifo
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tc qdisc add dev $DEV parent 1:20 handle 20: pfifo limit $BDP
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tc qdisc add dev $DEV parent 1:21 handle 21: pfifo limit $BDP
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# filter traffic into classes by fwmark
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tc filter add dev $DEV parent 1:0 prio 0 protocol ip handle 20 fw flowid 1:20
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tc filter add dev $DEV parent 1:0 prio 0 protocol ip handle 21 fw flowid 1:21
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# add TORSHAPER-OUT chain to the mangle table in iptables
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iptables -t mangle -N TORSHAPER-OUT
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iptables -t mangle -I $CHAIN -o $DEV -j TORSHAPER-OUT
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# Set firewall marks
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# Low priority to Tor IP
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iptables -t mangle -A TORSHAPER-OUT -s $TOR_IP -j MARK --set-mark 21
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# High prio for everything else
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# Don't bother to use BOX_IP. Box probably has other IPs too...
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#iptables -t mangle -A TORSHAPER-OUT -s $BOX_IP -j MARK --set-mark 20
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iptables -t mangle -A TORSHAPER-OUT -m mark --mark 0 -j MARK --set-mark 20
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echo "Outbound shaping added to $DEV. Rate for Tor upload at least: ${RATE_UP_TOR}Kbyte/sec."
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