dash/contrib/qos/tc.sh
fanquake 2da9982e55 Merge #17829: scripted-diff: Bump copyright of files changed in 2019
aaaaad6ac95b402fe18d019d67897ced6b316ee0 scripted-diff: Bump copyright of files changed in 2019 (MarcoFalke)

Pull request description:

ACKs for top commit:
  practicalswift:
    ACK aaaaad6ac95b402fe18d019d67897ced6b316ee0
  promag:
    ACK aaaaad6ac95b402fe18d019d67897ced6b316ee0 🎉
  fanquake:
    ACK aaaaad6ac95b402fe18d019d67897ced6b316ee0 - going to merge this now because the year is over and conflicts are minimal.

Tree-SHA512: 58cb1f53bc4c1395b2766f36fabc7e2332e213780a802762fff0afd59468dad0c3265f553714d761c7a2c44ff90f7dc250f04458f4b2eb8eef8b94f8c9891321
2023-12-06 11:40:14 -06:00

63 lines
2.6 KiB
Bash

#!/usr/bin/env bash
#
# Copyright (c) 2017-2019 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
export LC_ALL=C
#network interface on which to limit traffic
IF="eth0"
#limit of the network interface in question
LINKCEIL="1gbit"
#limit outbound Dash protocol traffic to this rate
LIMIT="160kbit"
#defines the IPv4 address space for which you wish to disable rate limiting
LOCALNET_V4="192.168.0.0/16"
#defines the IPv6 address space for which you wish to disable rate limiting
LOCALNET_V6="fe80::/10"
#delete existing rules ('Error: Cannot delete qdisc with handle of zero.' means there weren't any.)
tc qdisc del dev ${IF} root
#add root class
tc qdisc add dev ${IF} root handle 1: htb default 10
#add parent class
tc class add dev ${IF} parent 1: classid 1:1 htb rate ${LINKCEIL} ceil ${LINKCEIL}
#add our two classes. one unlimited, another limited
tc class add dev ${IF} parent 1:1 classid 1:10 htb rate ${LINKCEIL} ceil ${LINKCEIL} prio 0
tc class add dev ${IF} parent 1:1 classid 1:11 htb rate ${LIMIT} ceil ${LIMIT} prio 1
#add handles to our classes so packets marked with <x> go into the class with "... handle <x> fw ..."
tc filter add dev ${IF} parent 1: protocol ip prio 1 handle 1 fw classid 1:10
tc filter add dev ${IF} parent 1: protocol ip prio 2 handle 2 fw classid 1:11
if [ -n "${LOCALNET_V6}" ] ; then
# v6 cannot have the same priority value as v4
tc filter add dev ${IF} parent 1: protocol ipv6 prio 3 handle 1 fw classid 1:10
tc filter add dev ${IF} parent 1: protocol ipv6 prio 4 handle 2 fw classid 1:11
fi
#delete any existing rules
#disable for now
#ret=0
#while [ $ret -eq 0 ]; do
# iptables -t mangle -D OUTPUT 1
# ret=$?
#done
#limit outgoing traffic to and from port 9999. but not when dealing with a host on the local network
# (defined by $LOCALNET_V4 and $LOCALNET_V6)
# --set-mark marks packages matching these criteria with the number "2" (v4)
# --set-mark marks packages matching these criteria with the number "4" (v6)
# these packets are filtered by the tc filter with "handle 2"
# this filter sends the packages into the 1:11 class, and this class is limited to ${LIMIT}
iptables -t mangle -A OUTPUT -p tcp -m tcp --dport 9999 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
iptables -t mangle -A OUTPUT -p tcp -m tcp --sport 9999 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
if [ -n "${LOCALNET_V6}" ] ; then
ip6tables -t mangle -A OUTPUT -p tcp -m tcp --dport 9999 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
ip6tables -t mangle -A OUTPUT -p tcp -m tcp --sport 9999 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
fi