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I had IMQ running smoothly for nearly 4 hours, then
my linux box started alarming as if the CPU had overheated (which was not the
case). The box was completely locked up. I'm not sure if this is an IMQ related
problem or what. I'm leaning toward an IMQ problem since I've not had a problem
like this before and have been running iproute2/iptables for 8+ months
now.
After a hard reboot, I scanned through the messages
log and found this error message moments before the crash had
occurred.
kernel: KERNEL: assertion (tp->retrans_out == 0)
failed at tcp_input.c(1614)
My system specs:
P3 933 mHz
512 MB PC133
RH 9.0
iptables-1.2.8
iproute-2.4.7-7
The following is my IMQ/HTB/SFQ setup:
##Remove ALL tc qdiscs and classes first by deleting root handle tc qdisc del dev imq0 root > /dev/null 2>&1 #remove any imq qdiscs ##Add HTB Root Handle
tc qdisc add dev imq0 root handle 1: htb default 20 ##Add Primary Parent
tc class add dev imq0 parent 1: classid 1:1 htb rate 100mbit ceil 100mbit ##Add Prmary Children tc class add dev imq0 parent 1:1 classid 1:10 htb rate 50mbit ceil 50mbit tc qdisc add dev imq0 parent 1:10 handle 10: sfq perturb 10 tc class add dev imq0 parent 1:1 classid 1:20 htb rate 128kbit ceil 128kbit tc qdisc add dev imq0 parent 1:20 handle 20: sfq perturb 10 tc filter add dev imq0 parent 1: protocol ip handle
5 fw flowid 1:10
$IPTABLES -A PREROUTING -t mangle --src X.X.X.X/X -j MARK --set-mark 5 $IPTABLES -A PREROUTING -t mangle --dst X.X.X.X/X -j MARK --set-mark 5 $IPTABLES -A PREROUTING -t mangle -j IMQ --todev 0 #Send all packets passing through $IPTABLES -A POSTROUTING -t mangle -j IMQ --todev 0 #mangle table to IMQ device Any help would be greatly appreciated.
Regards,
Walt
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