[LARTC] Managing Inbound Traffic

["Wayne de Nobrega" <wdenobre@techconcepts.co.za>]

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I have been playing around with traffic shaping using htb and imq but am
battling to get any control over the inbound traffic.  Managing the
outgoing is working perfectly.  To manage the inbound internet traffic
which is running on a 64kbit line, I have tried the following including
various permutations of priorities, bursts, and ceilings with no affect.
(Does the ceil option work becuase when I did have it set higher than
the rate, the traffic did not increase even with no other traffic on the
line. I noticed the same thing with the burst option.  I cannot place
the shaper at the ISP in this case.
 
modprobe imq numdevs=1
 
tc qdisc add dev imq0 handle 1: root htb default 1
tc class add dev imq0 parent 1: classid 1:1 htb rate 64kbit
 
tc qdisc add dev imq0 parent 1:1 handle 10: htb default 5
tc class add dev imq0 parent 10: classid 10:1 htb rate 12kbit burst
16kbit prio 3
tc class add dev imq0 parent 10: classid 10:2 htb rate 28kbit burst
16kbit prio 2
tc class add dev imq0 parent 10: classid 10:3 htb rate 16kbit burst
16kbit prio 1
tc class add dev imq0 parent 10: classid 10:5 htb rate 8kbit prio 4
 
tc qdisc add dev imq0 parent 10:1 handle 21:0 sfq
tc qdisc add dev imq0 parent 10:2 handle 22:0 sfq
tc qdisc add dev imq0 parent 10:3 handle 23:0 sfq
tc qdisc add dev imq0 parent 10:5 handle 24:0 sfq
 
tc filter add dev imq0 protocol ip pref 1 parent 10: handle 1 fw classid
10:1
tc filter add dev imq0 protocol ip pref 2 parent 10: handle 2 fw classid
10:2
tc filter add dev imq0 protocol ip pref 3 parent 10: handle 3 fw classid
10:3
 
iptables -t mangle -A PREROUTING -i eth0 -j IMQ
iptables -t mangle -A PREROUTING -i eth0 -p tcp --sport 20 --dport 1024:
-m state --state ESTABLISHED -j MARK --set-mark 1
iptables -t mangle -A PREROUTING -i eth0 -p tcp --sport 80 --dport 1024:
-m state --state ESTABLISHED -j MARK --set-mark 2
iptables -t mangle -A PREROUTING -i eth0 -p tcp --sport 22 --dport 1024:
-m state --state ESTABLISHED -j MARK --set-mark 3
 
ip link set imq0 up

What I want to have is that they all have a minimum rate set which can
grow to fill the line if it is available.  
 
Any help or ideas if this is possible???
 
Thanks

Wayne
 

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