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Limit UDP bandwidth
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| #!/bin/bash | |
| ######################################################################################### | |
| ### UDP Upload Bandwidth Throttler ### | |
| ######################################################################################### | |
| # # | |
| # Based upon # | |
| # http://www.mzpeter.co.uk/limit-bandwidth-udp.html # | |
| # and # | |
| # https://www.cyberciti.biz/faq/linux-traffic-shaping-using-tc-to-control-http-traffic/ # | |
| # # | |
| # Feel free to copy and modify this file. Giving me credit for it is your # | |
| # choice, but please keep references to other people's work, which I don't # | |
| # have ownership and thus cannot decide what to do with the licenses. # | |
| # # | |
| ######################################################################################### | |
| network_interface=enp8s0 | |
| # network_interface=wlp2s0 | |
| throttled_rate=110kbps | |
| start () { | |
| # Turn on queue discipline | |
| sudo /sbin/tc qdisc add dev $network_interface root handle 1:0 htb default 10 | |
| # Define limitations | |
| sudo /sbin/tc class add dev $network_interface parent 1:0 classid 1:10 htb rate $throttled_rate prio 0 | |
| # Add rule to iptables | |
| sudo /sbin/iptables -A OUTPUT -t mangle -p udp -j MARK --set-mark 10 | |
| # Assign iptables rule to tc rule | |
| sudo tc filter add dev $network_interface parent 1:0 prio 0 protocol ip handle 10 fw flowid 1:10 | |
| } | |
| stop () { | |
| # Delete previous rules for the interface | |
| sudo /sbin/tc qdisc del dev $network_interface root | |
| # Remove rule from iptables | |
| sudo /sbin/iptables -D OUTPUT -t mangle -p udp -j MARK --set-mark 10 | |
| } | |
| show () { | |
| sudo /sbin/tc -s qdisc ls dev $network_interface | |
| } | |
| case "$1" in | |
| start) | |
| echo -n "Starting UDP throttling: " | |
| start | |
| echo "done" | |
| ;; | |
| stop) | |
| echo -n "Stopping UDP throttling: " | |
| stop | |
| echo "done" | |
| ;; | |
| reload) | |
| echo -n "Reloading UDP throttling:" | |
| stop | |
| start | |
| echo "done" | |
| ;; | |
| show) | |
| echo "UDP throttling status for $network_interface:" | |
| show | |
| echo "" | |
| ;; | |
| *) | |
| pwd=$(pwd) | |
| echo "Usage: $0 {start|stop|reload|show}" | |
| ;; | |
| esac | |
| exit 0 |
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