Hi I have been playing with tc. I'm using htb and sfq. I tried to setup shaping of every ip address within a /20. I found that there must be an upper limit of about 2096 on the number of rules (classes, qdiscs or filters). I was testing a /20 which gives 4096 classes, qdiscs and filters. I'm using hashkey to optimize processing of frames. When executing the script below - it stops when adding rules for "ip 10.0.7.253" with this error: handle 1:4097 handle 1:4099 handle 1:4101 RTNETLINK answers: File exists We have an error talking to the kernel handle 1:4103 RTNETLINK answers: File exists We have an error talking to the kernel handle 1:4105 ... ... etc. Is there a limit with tc or I'm I doing something wrong ? (I'm using iproute2-2.6.9-041019) This is the script: #!/bin/sh /sbin/tc qdisc add dev eth1 root handle 1: htb /sbin/tc class add dev eth1 parent 1: classid 1:3 htb rate 34mbit ceil 34mbit burst 0kbit cburst 0kbit /sbin/tc filter add dev eth1 parent 1:3 protocol ip u32 /sbin/tc filter add dev eth1 parent 1:3 handle 3: protocol ip u32 divisor 256 /sbin/tc filter add dev eth1 protocol ip parent 1: u32 match ip dst 10.0.0.0/20 hashkey mask 0x000000ff at 16 link 3: echo handle 1:13 /sbin/tc class add dev eth1 parent 1:3 classid 1:13 htb rate 512kbit ceil 512kbit burst 0k cburst 0k /sbin/tc qdisc add dev eth1 parent 1:13 handle 13: sfq perturb 4 /sbin/tc filter add dev eth1 protocol ip parent 1:3 u32 ht 3:1: match ip dst 10.0.0.1 flowid 1:13 echo handle 1:15 /sbin/tc class add dev eth1 parent 1:3 classid 1:15 htb rate 512kbit ceil 512kbit burst 0k cburst 0k /sbin/tc qdisc add dev eth1 parent 1:15 handle 15: sfq perturb 4 /sbin/tc filter add dev eth1 protocol ip parent 1:3 u32 ht 3:2: match ip dst 10.0.0.2 flowid 1:15 ... ... echo handle 1:4101 /sbin/tc class add dev eth1 parent 1:3 classid 1:4101 htb rate 512kbit ceil 512kbit burst 0k cburst 0k /sbin/tc qdisc add dev eth1 parent 1:4101 handle 4101: sfq perturb 4 /sbin/tc filter add dev eth1 protocol ip parent 1:3 u32 ht 3:fd: match ip dst 10.0.7.253 flowid 1:4101 ... ... echo handle 1:8201 /sbin/tc class add dev eth1 parent 1:3 classid 1:8201 htb rate 512kbit ceil 512kbit burst 0k cburst 0k /sbin/tc qdisc add dev eth1 parent 1:8201 handle 8201: sfq perturb 4 /sbin/tc filter add dev eth1 protocol ip parent 1:3 u32 ht 3:ff: match ip dst 10.0.15.255 flowid 1:8201 _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
