Re: [LARTC] IMQ & NAT

[Andre Correa <andre.correa@pobox.com>]

Hi Joan, can you please tell us what version of kernel and iptables are 
you using?

Are you using Patrick McHardy's / www.linuximq.net original IMQ 
implementation?

tks

Andre Correa
www.linuximq.net



Joan Fuster Monzó wrote:
> Hi all, my IMQ device works OK (thanks to Andy Furniss), but now I've
> problems to attach the traffic in the qdisc's. This is my conf:
> 
> -----------------------------------------------------------------------
> INET
>  |
>  |eth0  300Kbps
> ROUTER (NAT)
>  |eth1
>  |
> LAN
> -----------------------------------------------------------------------
> 
> MAX00
> 
> tc qdisc add dev imq0 root handle 1: htb default 13
>                                                                                                                
> tc class add dev imq0 parent 1: classid 1:1 htb rate ${MAX}kbit ceil
> ${MAX}kbit
>                                                                                                                
> tc class add dev imq0 parent 1:1 classid 1:10 htb rate 60kbit ceil
> ${MAX}kbit prio 0
> tc class add dev imq0 parent 1:1 classid 1:11 htb rate 40kbit ceil
> ${MAX}kbit prio 1
> tc class add dev imq0 parent 1:1 classid 1:12 htb rate 100kbit ceil
> ${MAX}kbit prio 2
> tc class add dev imq0 parent 1:1 classid 1:13 htb rate 100kbit ceil
> ${MAX}kbit prio 3
>                                                                                                                
> tc qdisc add dev imq0 parent 1:10 handle 100: sfq
> tc qdisc add dev imq0 parent 1:11 handle 110: sfq
> tc qdisc add dev imq0 parent 1:12 handle 120: sfq
> tc qdisc add dev imq0 parent 1:13 handle 130: sfq
>                                                                                                                
> tc filter add dev imq0 parent 1:0 protocol ip prio 1 handle 1 fw classid
> 1:10
> tc filter add dev imq0 parent 1:0 protocol ip prio 2 handle 2 fw classid
> 1:11
> tc filter add dev imq0 parent 1:0 protocol ip prio 3 handle 3 fw classid
> 1:12
> tc filter add dev imq0 parent 1:0 protocol ip prio 4 handle 4 fw classid
> 1:13
> 
> ip link set imq0 up
> 
> iptables -t mangle -A PREROUTING -i eth0 -j IMQ --todev 0
>                                                                                                                
> #ICMP                                                                                                         
> iptables -t mangle -A PREROUTING -i eth0 -p icmp -j MARK --set-mark 1
> iptables -t mangle -A PREROUTING -i eth0 -p icmp -j RETURN
>                                                                                                                
> #SSH                                                                                                          
> iptables -t mangle -A PREROUTING -i eth0 -p tcp  --dport 22 -j MARK
> --set-mark 1
> iptables -t mangle -A PREROUTING -i eth0 -p tcp  --dport 22 -j RETURN
> 
> ...
> ------------------------------------------------------------------------
> 
> I've patched the IMQ with the imq-nat patch, but all traffic goes to
> 1:13
> 
> #tc -s class show dev imq0
> -------------------------------------------------------------------------
> ...
> 
> class htb 1:13 parent 1:1 leaf 130: prio 3 rate 100Kbit ceil 300Kbit
> burst 1727b cburst 1983b
>  Sent 8981846847 bytes 18055130 pkts (dropped 99, overlimits 0)
>  lended: 8947767 borrowed: 9107363 giants: 0
>  tokens: 136320 ctokens: 52265
>  
> class htb 1:12 parent 1:1 leaf 120: prio 2 rate 100Kbit ceil 300Kbit
> burst 1727b cburst 1983b
>  Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>  lended: 0 borrowed: 0 giants: 0
>  tokens: 138240 ctokens: 52905
> 
> ---------------------------------------------------------------------------
> 
> What happens?? I'm newbie in IMQ... Sorry for the long text ;) Thanks
> for the help!!
> 
> Joan

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