netdev - Re: [PATCH 3/7] tcp: consolidate paws check

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>] [day] [month] [year] [list]

Message-Id: <20090315.201038.240269562.davem@davemloft.net>
Date:	Sun, 15 Mar 2009 20:10:38 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ilpo.jarvinen@...sinki.fi
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 3/7] tcp: consolidate paws check

From: "Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
Date: Sun, 15 Mar 2009 02:07:51 +0200

> Wow, it was quite tricky to merge that stream of negations
> but I think I finally got it right:
> 
> check & replace_ts_recent:
> (s32)(rcv_tsval - ts_recent) >= 0                  => 0
> (s32)(ts_recent - rcv_tsval) <= 0                  => 0
> 
> discard:
> (s32)(ts_recent - rcv_tsval)  > TCP_PAWS_WINDOW    => 1
> (s32)(ts_recent - rcv_tsval) <= TCP_PAWS_WINDOW    => 0
> 
> I toggled the return values of tcp_paws_check around since
> the old encoding added yet-another negation making tracking
> of truth-values really complicated.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>

Applied.
--
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