netdev - Re: tc filter ouput, no filter hits?

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Message-ID: <1356789329.21409.3932.camel@edumazet-glaptop>
Date:	Sat, 29 Dec 2012 05:55:29 -0800
From:	Eric Dumazet <erdnetdev@...il.com>
To:	julius <commercials22@...oo.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: tc filter ouput, no filter hits?

On Sat, 2012-12-29 at 05:46 -0800, julius wrote:
> hi,
> 
> ive seen some examples where the output from:
> tc -s filter show dev ifb0 parent 1: 
> shows a filter hit count, like the output shown below:
> 
> filter protocol ip pref 1 u32
> filter protocol ip pref 1 u32 fh 800: ht divisor 1
> filter protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 
> 1:1  (rule hit 2 success 0)
> 
> 
> 
> however in my openwrt 12.09 and on my ubuntu machine i dont see the part in the paranthese, why is that?
> 
> ubuntu:
> iproute (20120521-3ubuntu1)
> 3.2.0-23-generic #36-Ubuntu
> 

Because its optional, kernel compilation needs :

CONFIG_CLS_U32_PERF=y



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