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Date: Thu, 25 Feb 2010 16:11:49 -0300 From: Reinaldo de Carvalho <reinaldoc@...il.com> To: hadi@...erus.ca 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, Feb 25, 2010 at 10:24 AM, jamal <hadi@...erus.ca> wrote: > On Thu, 2010-02-25 at 08:25 -0300, Reinaldo de Carvalho wrote: >> Then u32 mask is useless. Or exist a correct mask to match with especific range? > > Ranges and masks typically dont mix well generally - this has nothing to > do with u32; try doing subnet ranges for example. It is hard to describe > port range 10->20 using masks.. > > If i read your email correctly: you are trying to get the first 32 ports > after 6880. It would seem to me the mask should be 0xFFE0, no? i.e your > bc calculation should be: > echo "obase=16;(2^16)-32" | bc > No. 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 ) -- Reinaldo de Carvalho http://korreio.sf.net http://python-cyrus.sf.net "Don't try to adapt the software to the way you work, but rather yourself to the way the software works" (myself) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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