From: Michael Tremer michael.tremer@ipfire.org
This is an alternative implementation to the Intermediate Queuing Device (IMQ) which is an out-of-tree kernel patch and has been criticised for being slow, especially with mutliple processors.
IFB is part of the mainline kernel and a lot less code.
Signed-off-by: Michael Tremer michael.tremer@ipfire.org Signed-off-by: Daniel Weismüller daniel.weismueller@ipfire.org --- config/qos/makeqosscripts.pl | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/config/qos/makeqosscripts.pl b/config/qos/makeqosscripts.pl index 053b32161..b25aad93a 100644 --- a/config/qos/makeqosscripts.pl +++ b/config/qos/makeqosscripts.pl @@ -406,10 +406,20 @@ print <<END ### $qossettings{'IMQ_DEV'} ###
+ tc qdisc del dev $qossettings{'RED_DEV'} root + tc qdisc del dev $qossettings{'RED_DEV'} ingress + tc qdisc add dev $qossettings{'RED_DEV'} handle ffff: ingress + ### BRING UP $qossettings{'IMQ_DEV'} - modprobe imq numdevs=1 numqueues=$(grep -c "^processor" /proc/cpuinfo || echo 1) + if [ ! -d "/sys/class/net/$qossettings{'IMQ_DEV'}" ]; then + ip link add name $qossettings{'IMQ_DEV'} type ifb + fi + ip link set $qossettings{'IMQ_DEV'} up
+ tc filter add dev $qossettings{'RED_DEV'} parent ffff: protocol all u32 match u32 0 0 \ + action mirred egress redirect dev $qossettings{'IMQ_DEV'} + ### ADD HTB QDISC FOR $qossettings{'IMQ_DEV'} tc qdisc del dev $qossettings{'IMQ_DEV'} root >/dev/null 2>&1 tc qdisc add dev $qossettings{'IMQ_DEV'} root handle 2: htb default $qossettings{'DEFCLASS_INC'} @@ -510,7 +520,6 @@ print <<END iptables -t mangle -A POSTROUTING -i $qossettings{'RED_DEV'} -p ah -j RETURN iptables -t mangle -A POSTROUTING -i $qossettings{'RED_DEV'} -p esp -j RETURN iptables -t mangle -A POSTROUTING -i $qossettings{'RED_DEV'} -p ip -j RETURN - iptables -t mangle -A POSTROUTING -m mark ! --mark 0 ! -o $qossettings{'RED_DEV'} -j IMQ --todev 0 iptables -t mangle -I FORWARD -i $qossettings{'RED_DEV'} -j QOS-INC iptables -t mangle -A FORWARD -i $qossettings{'RED_DEV'} -j QOS-TOS
@@ -527,7 +536,6 @@ print <<END iptables -t mangle -A PREROUTING -i $qossettings{'RED_DEV'} -p ah -j RETURN iptables -t mangle -A PREROUTING -i $qossettings{'RED_DEV'} -p esp -j RETURN iptables -t mangle -A PREROUTING -i $qossettings{'RED_DEV'} -p ip -j RETURN - iptables -t mangle -A PREROUTING -i $qossettings{'RED_DEV'} -j IMQ --todev 0 iptables -t mangle -I PREROUTING -i $qossettings{'RED_DEV'} -j QOS-INC iptables -t mangle -A PREROUTING -i $qossettings{'RED_DEV'} -j QOS-TOS
@@ -688,16 +696,14 @@ print <<END tc qdisc add root dev $qossettings{'IMQ_DEV'} fq_codel >/dev/null 2>&1 # STOP IMQ-DEVICE ip link set $qossettings{'IMQ_DEV'} down >/dev/null 2>&1 + + # REMOVE & FLUSH CHAINS iptables -t mangle --delete POSTROUTING -i $qossettings{'RED_DEV'} -p ah -j RETURN >/dev/null 2>&1 iptables -t mangle --delete POSTROUTING -i $qossettings{'RED_DEV'} -p esp -j RETURN >/dev/null 2>&1 iptables -t mangle --delete POSTROUTING -i $qossettings{'RED_DEV'} -p ip -j RETURN >/dev/null 2>&1 iptables -t mangle --delete PREROUTING -i $qossettings{'RED_DEV'} -p ah -j RETURN >/dev/null 2>&1 iptables -t mangle --delete PREROUTING -i $qossettings{'RED_DEV'} -p esp -j RETURN >/dev/null 2>&1 iptables -t mangle --delete PREROUTING -i $qossettings{'RED_DEV'} -p ip -j RETURN >/dev/null 2>&1 - iptables -t mangle --delete POSTROUTING -m mark ! --mark 0 ! -o $qossettings{'RED_DEV'} -j IMQ --todev 0 >/dev/null 2>&1 - iptables -t mangle --delete PREROUTING -i $qossettings{'RED_DEV'} -j IMQ --todev 0 >/dev/null 2>&1 - # rmmod imq # this crash on 2.6.25.xx - # REMOVE & FLUSH CHAINS iptables -t mangle --delete POSTROUTING -o $qossettings{'RED_DEV'} -j QOS-OUT >/dev/null 2>&1 iptables -t mangle --delete POSTROUTING -o $qossettings{'RED_DEV'} -j QOS-TOS >/dev/null 2>&1 iptables -t mangle --flush QOS-OUT >/dev/null 2>&1