netdev - Re: [RFC] netfilter: WIP: Xtables idletimer target implementation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1275417197.14585.2.camel@powerslave>
Date:	Tue, 01 Jun 2010 21:33:17 +0300
From:	Luciano Coelho <luciano.coelho@...ia.com>
To:	ext Jan Engelhardt <jengelh@...ozas.de>
Cc:	ext Patrick McHardy <kaber@...sh.net>,
	"netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Timo Teras <timo.teras@....fi>
Subject: Re: [RFC] netfilter: WIP: Xtables idletimer target implementation

On Mon, 2010-05-31 at 21:51 +0200, ext Jan Engelhardt wrote:
> On Monday 2010-05-31 21:12, Luciano Coelho wrote:
> >
> >I considered this option, but then I didn't find a proper place where to
> >include the attribute in sysfs, since I cannot add it as part of the
> >interface (eg. /sys/class/net/wlan0/idletimer) as I was doing before.
> 
> You couldn't have done that before either, because the interface name
> in ipt_ip may refer to an interface that does not exist at all times.
> 
> >The other option would be to make the idletimer as part of the
> >xt_IDLETIMER module object in sysfs
> >(ie. /sys/module/xt_IDLETIMER/<user_supplied_name>), but it looks out of
> >place.
> 
> I like it. It follows /proc/net/xt_{hashlimit,recent}/<user_supplied_name>.

I'm starting to like this more and more too, as my code is getting much
smaller ;)

One quick question, though.  Do you have any ideas on how I can make
sure that the user doesn't supply the same name twice (ie. two rules
with the same user_supplied_name)?

The problem is that the userspace always re-adds all the existing rules
before inserting a new one and only later deletes the old rules. :\


-- 
Cheers,
Luca.

--
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