PRIO qdisc + iptables TOS target

[Salatiel Filho]

i am trying to do some traffic classification using the PRIO qdisc and
i am having a few problems.

I have a root htb class:

tc qdisc add dev imq0 root handle 1: htb default 255 r2q 1
tc class add dev imq0 parent 1: classid 1:1 htb rate 768kbit

and a child PRIO
tc class add dev imq0 parent 1:1 classid 1:99 htb rate 96kbit ceil
600kbit prio 0
tc qdisc add dev imq0 parent 1:99 prio
tc filter add dev imq0 parent 1: protocol ip prio 7 u32 match ip dst
192.168.1.99 flowid 1:99




the result is:

# tc - s class ls dev imq0

class htb 1:1 root rate 768000bit ceil 768000bit burst 1599b cburst 159=
9b
Sent 2451 bytes 22 pkt (dropped 0, overlimits 0 requeues 0)
rate 1016bit 1pps backlog 0b 0p requeues 0
lended: 0 borrowed: 0 giants: 0
tokens: 250000 ctokens: 250000

class htb 1:129 parent 1:1 leaf 816c: prio 0 rate 96000bit ceil
600000bit burst 1599b cburst 1599b
Sent 7269 bytes 50 pkt (dropped 0, overlimits 0 requeues 0)
rate 1416bit 1pps backlog 0b 0p requeues 0

class prio 816c:1 parent 816c:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
class prio 816c:2 parent 816c:
Sent 7269 bytes 50 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
class prio 816c:3 parent 816c:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0



The problem is that when i want to give a higher priority for some
ports the packets keep going to 816:2 instead of 816:1

my iptables rules:


iptables -t mangle -I PREROUTING -p tcp -m multiport --ports 22,80 -j
TOS --set-tos 0x10

Shouldn't this rule make all packets from/to port 22 and 80 go through
816c:1 PRIO class ?


Any help is very welcome.


[]'s
Salatiel

"O maior prazer do inteligente =E9 bancar o idiota
diante de um idiota que banca o inteligente".
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[Salatiel Filho]

Why ? Isn't the mapping done automatically based on the packet TOS ?

At least accoding to http://www.opalsoft.net/qos/DS-23.htm

"If you do not provide tc filters to classify traffic", the PRIO
qdisc looks at the TC_PRIO
priority to decide how to enqueue traffic. The kernel assigns each
packet a TC_PRIO priority,
based on TOS flags or socket options passed by the application.
The TC_PRIO is decided based on the TOS, and mapped as follows:"


[]'s
Salatiel

"O maior prazer do inteligente =E9 bancar o idiota
diante de um idiota que banca o inteligente".

You need a filter (tc) to direct traffic with a tos field of 0x10 to =

the prio queue.

--- Original Message ---
Sent: Thu, 22 Apr 2010 21:46:25 Localtime
Subject: PRIO qdisc + iptables TOS target
i am trying to do some traffic classification using the PRIO qdisc an=

d

i am having a few problems.
tc qdisc add dev imq0 root handle 1: htb =A0default 255 r2q 1
tc class add dev imq0 parent 1: =A0classid 1:1 htb rate 768kbit
and a child PRIO
tc class add dev imq0 parent 1:1 classid =A01:99 htb rate 96kbit ceil
600kbit prio 0
tc qdisc add dev imq0 parent 1:99 prio
tc filter add dev imq0 parent 1: protocol ip =A0prio 7 u32 match ip d=

st

192.168.1.99 flowid 1:99
# tc - s class ls dev imq0
class htb 1:1 root rate 768000bit ceil 768000bit burst 1599b cburst 1=

599b

=A0Sent 2451 bytes 22 pkt (dropped 0, overlimits 0 requeues 0)
=A0rate 1016bit 1pps backlog 0b 0p requeues 0
=A0lended: 0 borrowed: 0 giants: 0
=A0tokens: 250000 ctokens: 250000
class htb 1:129 parent 1:1 leaf 816c: prio 0 rate 96000bit ceil
600000bit burst 1599b cburst 1599b
=A0Sent 7269 bytes 50 pkt (dropped 0, overlimits 0 requeues 0)
=A0rate 1416bit 1pps backlog 0b 0p requeues 0
=A0Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
=A0backlog 0b 0p requeues 0
=A0Sent 7269 bytes 50 pkt (dropped 0, overlimits 0 requeues 0)
=A0backlog 0b 0p requeues 0
=A0Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
=A0backlog 0b 0p requeues 0
The problem is that when i want to give a higher priority for some
ports the packets keep going to 816:2 instead of 816:1
iptables -t mangle -I PREROUTING =A0-p tcp -m multiport --ports 22,80=

-j

TOS =A0--set-tos 0x10
Shouldn't this rule make all packets from/to port 22 and 80 go throug=

h

816c:1 PRIO class ?
Any help is very welcome.
[]'s
Salatiel
"O maior prazer do inteligente =E9 bancar o =A0idiota
=A0 diante de um =A0idiota que banca o inteligente".
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To unsubscribe from this list: send the line "unsubscribe netfilter" =

in

More majordomo info at =A0http://vger.kernel.org/majordomo-info.html

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el" in
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