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From: Pablo Neira <pablo@eurodev.net>
To: Patrick McHardy <kaber@trash.net>,
	Netfilter Development Mailinglist
	<netfilter-devel@lists.netfilter.org>
Subject: Re: [RFC] Die to NOTRACK/TRACE, long live MARK!
Date: Tue, 25 May 2004 14:38:15 +0200	[thread overview]
Message-ID: <40B33E37.4070807@eurodev.net> (raw)
In-Reply-To: <40AF6A60.70406@trash.net>

Hi Patrick,

Patrick McHardy wrote:

>> Do we really need an unsigned long to store the status? :-)
>
>
> I always thought we would, because set_bit and test_bit take unsigned
> long *, but I'm not sure anymore if that really means we can't use
> something smaller.


if we use atomic operations *_bit for status field in ip_conntrack, we 
only use 24 bits of that unsigned long, this issue lets us keep 
compatibility with some special platforms which only support atomic 
operations of that size.

I read that in  Robert Love's linux kernel development book I think. If 
missing anything, please let me know.

regards,
Pablo

  parent reply	other threads:[~2004-05-25 12:38 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-05-19 21:30 [RFC] Die to NOTRACK/TRACE, long live MARK! Jozsef Kadlecsik
2004-05-20 10:48 ` Pablo Neira
2004-05-21  0:20 ` Philip Craig
2004-05-21  2:12   ` Patrick McHardy
2004-05-22 12:38     ` Jozsef Kadlecsik
2004-05-22 14:57       ` Patrick McHardy
2004-05-23  8:55         ` Martin Josefsson
2004-05-23 17:00           ` Patrick McHardy
2004-05-25 12:38         ` Pablo Neira [this message]
2004-05-25 17:45           ` Patrick McHardy
2004-05-27 10:33           ` Henrik Nordstrom
2004-05-28 11:41             ` Pablo Neira
2004-05-21 12:35   ` Jozsef Kadlecsik

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