Here is a simple setup that I'm testing. The goal is the shape incoming
NNTP traffic.
Here is the script:
tc qdisc del dev eth0 root 2>/dev/null
tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 10Mbit \
avpkt 1000 cell 8
tc class add dev eth0 parent 1:0 classid 1:100 cbq bandwidth 2Mbit \
rate 130Kbit prio 3 allot 1514 cell 8 maxburst 20 avpkt 1000
tc filter add dev eth0 parent 1:0 protocol ip prio 1 handle 1 \
fw classid 1:100
iptables -F -t mangle
iptables -A PREROUTING -i eth0 -t mangle -p tcp --sport 119 \
-j MARK --set-mark 1
Here is the results of a simple test:
# iptables -t mangle -L -v -n
Chain PREROUTING (policy ACCEPT 220M packets, 107G bytes)
pkts bytes target prot opt in out source
destination
0 0 MARK tcp -- eth0 * 0.0.0.0/0
0.0.0.0/0 tcp spt:119 MARK set 0x1
Chain OUTPUT (policy ACCEPT 165M packets, 59G bytes)
pkts bytes target prot opt in out source
destination
# telnet news.giganews.com 119
Trying 216.166.71.230...
Connected to news-central.giganews.com.
Escape character is '^]'.
200 News.GigaNews.Com (Typhoon v1.2.3)
quit
205 GoodBye
Connection closed by foreign host.
# iptables -t mangle -L -vn
Chain PREROUTING (policy ACCEPT 220M packets, 107G bytes)
pkts bytes target prot opt in out source
destination
6 377 MARK tcp -- eth0 * 0.0.0.0/0
0.0.0.0/0 tcp spt:119 MARK set 0x1
Chain OUTPUT (policy ACCEPT 165M packets, 59G bytes)
pkts bytes target prot opt in out source
destination
# tc -s class show dev eth0
class cbq 1: root rate 10Mbit (bounded,isolated) prio no-transmit
Sent 105328 bytes 1459 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 624 undertime 0
class cbq 1:100 parent 1: rate 130Kbit prio 3
Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 1.30863e+06 undertime 0
# tc filter show dev eth0
filter parent 1: protocol ip pref 1 fw
filter parent 1: protocol ip pref 1 fw handle 0x1 classid 1:100
Still no packets being filtered into my CBQ, but the packets are clearly
being marked.
--
Edwin Chiu | ICBM: 43.39N 79.23W
edwin@xxxxxxxxxxxxxx | PGP: 1024D/0x16B55226
