Re: [LARTC] tc: u32 match in nexthdr not working?

Linux Advanced Routing and Traffic Control

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On Fri, Dec 14, 2001 at 02:59:15PM -0500, Michael T. Babcock wrote:
> On Fri, Dec 14, 2001 at 03:54:43PM +0200, Julian Anastasov wrote:
> > Didn't tried it but something like this:
> > 
> > F="tc filter add dev eth0 parent 1:0 protocol ip prio 5"
> > $F handle 1: u32 divisor 1
> > $F u32 ht 1: match tcp src 22 0xFFFF match ip protocol 6 0xFF match ip firstfrag flowid 1:2
> > $F u32 ht 800:: match u8 0 0 offset at 0 mask 0x0f00 shift 6 link 1:
> 
> Thanks for that example; a few more U32 filter examples in the HOWTO 
> would be welcome I'm sure ... ;-~

I'm always happy to receive tested examples. That is what takes the most
time - I actually try to test everything these days or I need to be *sure*
that somebody tested it.

In the past a lot of crap was merged which later turned out not to work :-(

> Michael T. Babcock
> CTO, FibreSpeed Ltd.     (Hosting, Security, Consultation, Database, etc)
> http://www.fibrespeed.net/~mbabcock/

Oh, I've been exploring how the 'virtual clock' works in the Linux CBQ
implementation, it turns out that you can misconfigure it quite badly and
still get *statistically* accurate shaping. I'm still figuring out the
effects at short timescales of misconfiguring bandwidth.

Regards,

bert hubert

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