netdev - Re: [Bugme-new] [Bug 15379] New: u32 classifier port range calculation error

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Date:	Thu, 25 Feb 2010 16:47:05 -0500
From:	jamal <hadi@...erus.ca>
To:	Reinaldo de Carvalho <reinaldoc@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [Bugme-new] [Bug 15379] New: u32 classifier port range 
 calculation error

On Thu, 2010-02-25 at 16:11 -0300, Reinaldo de Carvalho wrote:

> Testing with mask 0xFFE0... (1 port match)
> 
> # Stats...
> # tc -s filter show dev eth0
> filter parent 1: protocol ip pref 1 u32
> filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1
> filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht
> 800 bkt 0 flowid 1:1200  (rule hit 13 success 0)
>   match 00001ae0/0000ffe0 at 20 (success 0 )
> 
> # Sending packets...
> # nmap example.ufpa.br -p 1-65535
> 
> # Stats...
> # tc -s filter show dev eth0
> filter parent 1: protocol ip pref 1 u32
> filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1
> filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht
> 800 bkt 0 flowid 1:1200  (rule hit 65459 success 1)
>   match 00001ae0/0000ffe0 at 20 (success 1 )


Ok, you forced me to setup a system and install nmap.

-------
bigismall:~# tc -s filter show dev eth0
filter parent 1: protocol ip pref 1 u32 
filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1 
filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht
800 bkt 0 flowid 1:1200  (rule hit 15 success 0)
  match 00001ae0/0000ffe0 at 20 (success 0 ) 
bigismall:~# nmap bigi -p 1-65535

Starting Nmap 5.00 ( http://nmap.org ) at 2010-02-25 16:40 UTC
Interesting ports on bigi (10.0.0.26):
Not shown: 65532 closed ports
PORT   STATE SERVICE
22/tcp open  ssh
MAC Address: 00:16:2E:12:4D:2E (Unknown)

Nmap done: 1 IP address (1 host up) scanned in 65.55 seconds
bigismall:~# tc -s filter show dev eth0
filter parent 1: protocol ip pref 1 u32 
filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1 
filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht
800 bkt 0 flowid 1:1200  (rule hit 65614 success 32)
  match 00001ae0/0000ffe0 at 20 (success 32 ) 
bigismall:~# 
--------------

cheers,
jamal

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