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: <200702051843.07026.mb@bu3sch.de>
Date:	Mon, 5 Feb 2007 18:43:06 +0100
From:	Michael Buesch <mb@...sch.de>
To:	Jiri Benc <jbenc@...e.cz>
Cc:	Ivo van Doorn <ivdoorn@...il.com>,
	"John Linville" <linville@...driver.com>, netdev@...r.kernel.org,
	Michael Buesch <mbuesch@...enet.de>,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH 1/2] d80211: Add software RTS support

On Monday 05 February 2007 18:28, Jiri Benc wrote:
> On Wed, 31 Jan 2007 20:16:50 +0100, Ivo van Doorn wrote:
> > Not all hardware are capable of generating their own RTS frames.
> > This patch will add support for creating the RTS frame in software,
> > when the driver requests this through the flag
> > IEEE80211_HW_SOFTWARE_RTS
> 
> It seems this is not the ideal solution. Most of drivers needing
> software RTS would need to remember the RTS frame somewhere (as they
> need to pass it together with the actual frame).
> 
> A better solution would be either to pass a pointer to RTS frame data
> in tx_control or to create a function returning RTS frame.

I sent a patchset that works with most (all?) hardware implementations,
as it uses library calls.

I also think that sending RTS in software is not going to work,
as the timing can not be guaranteed. And timing is why we do it in
the first place. If the HW is not capable of sending RTS frames, we
should not try to emulate them in SW, as it might make the situation
even worse by messing up the NAVs by wrong timing.

-- 
Greetings Michael.
-
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

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ