Re: [LARTC] DSCP remarking + GRED at one go?

From: "Rinse Kloek" <rinse@solcon.nl>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] DSCP remarking + GRED at one go?
Date: Tue, 01 Apr 2003 06:30:12 +0000	[thread overview]
Message-ID: <marc-lartc-104918429504859@msgid-missing> (raw)
In-Reply-To: <marc-lartc-104910731021038@msgid-missing>

Is there also a DSCP patch for the 2.4 kernel so I can use policy routing on
DSCP fields in stead of on TOS fields?

Rinse
----- Original Message -----
From: "Hoon Titus" <hoontitu@comp.nus.edu.sg>
To: <lartc@mailman.ds9a.nl>
Sent: Tuesday, April 01, 2003 7:05 AM
Subject: RE: [LARTC] DSCP remarking + GRED at one go?

> Hi everyone,
>
> Thanks for the reply.
>
> Sad to say but Jame's script doesn't work on my system :-(. Is it because
> my kernel is too old? I have to keep it as i can't configure mrouted to
> work on 2.4 kernel.
>
> My router config: 2 NIC eth0 and eth1
> 2.2 kernel + DS8 patch + iproute2 2.2.4 + mrouted
>
> I suspect the line "tc qdisc add dev eth0 handle 2:0 root dsmark indices
> 64 set_tc_index" which setup the 2nd DSMARK caused all the problem:
> -------------------------------->8----------------------------------------
-
> #!/bin/bash
>
> echo 'Init tc..'
> #clear old entries
> tc qdisc del dev eth0 handle 1:0 root dsmark indices 64 > /dev/null
>
> #starts here
> tc qdisc add dev eth0 handle 1:0 root dsmark indices 64
>
> #setup the lookup table
> echo 'Setup tc class..'
> tc class change dev eth0 classid 1:1 dsmark mask 0x3 value 0x28
> tc class change dev eth0 classid 1:2 dsmark mask 0x3 value 0x30
> tc class change dev eth0 classid 1:3 dsmark mask 0x3 value 0x00
>
> #setup the priority
> echo 'Setup tc filter priority..'
> tc filter add dev eth0 parent 1:0 protocol ip prio 4 handle 1: u32 divisor
1
> tc filter add dev eth0 parent 1:0 protocol ip prio 5 handle 2: u32 divisor
1
>
> #Mcast layers - marked AF11 and AF12 accordingly
> # AF11 to class id 1:1
> # AF12 to class id 1:2
> echo 'Filter according to MCast addr..'
> tc filter add dev eth0 parent 1:0 prio 4 u32 match ip dst 225.1.1.1/32
> flowid 1:1
> tc filter add dev eth0 parent 1:0 prio 5 u32 match ip dst 225.1.1.6/32
> flowid 1:2
>
> # the rest of packets ends up with DSMARK 0x00
> tc filter add dev eth0 parent 1:0 prio 5 u32 match ip dst 0.0.0.0/0 flowid
> 1:3
>
> # handle 2:0
> # --- General setup  ---
> tc qdisc add dev eth0 handle 2:0 root dsmark indices 64 set_tc_index
> .....
> (the remaing lines are commented and as i found the tc qdisc add line has
> caused the problem)
> --------------------------------------------------------------------------
-
>
> Once the 2nd DSMARK is added, the entire remarking system failed to work.
> I have also have to add in the lines
> "tc filter add dev eth0 parent 1:0 protocol ip prio 4 handle 1: u32
> divisor 1"
> "tc filter add dev eth0 parent 1:0 protocol ip prio 5 handle 2: u32
> divisor 1"
> in order to use the remarking facility provided.
>
> Can anyone please point out what's wrong (or any kernel limitation)?
>
> Thanks and Regards,
> Titus
>
>
>
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>

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