ipv6 support

contrib/qos/tc.sh

@@ -1,11 +1,17 @@
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #network interface on which to limit traffic
 IF="eth0"
 #limit of the network interface in question
 LINKCEIL="1gbit"
 #limit outbound Bitcoin protocol traffic to this rate
 LIMIT="160kbit"
-#defines the address space for which you wish to disable rate limiting
-LOCALNET="192.168.0.0/16"
+#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
 tc qdisc del dev ${IF} root
@@ -24,6 +30,12 @@ tc class add dev ${IF} parent 1:1 classid 1:11 htb rate ${LIMIT} ceil ${LIMIT} p
 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 [ ! -z "${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
@@ -32,10 +44,16 @@ tc filter add dev ${IF} parent 1: protocol ip prio 2 handle 2 fw classid 1:11
 #	ret=$?
 #done
 
-#limit outgoing traffic to and from port 8888. but not when dealing with a host on the local network
-#	(defined by $LOCALNET)
-#	--set-mark marks packages matching these criteria with the number "2"
-#	these packages are filtered by the tc filter with "handle 2"
+#limit outgoing traffic to and from port 8333. 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 8888 ! -d ${LOCALNET} -j MARK --set-mark 0x2
-iptables -t mangle -A OUTPUT -p tcp -m tcp --sport 8888 ! -d ${LOCALNET} -j MARK --set-mark 0x2
+iptables -t mangle -A OUTPUT -p tcp -m tcp --dport 8333 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
+iptables -t mangle -A OUTPUT -p tcp -m tcp --sport 8333 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
+
+if [ ! -z "${LOCALNET_V6}" ] ; then
+	ip6tables -t mangle -A OUTPUT -p tcp -m tcp --dport 8333 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
+	ip6tables -t mangle -A OUTPUT -p tcp -m tcp --sport 8333 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
+fi