linux-kernel - Re: rtl8187 rate control doesn't work

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Message-ID: <43e72e890801051354v280c0ceeo78790bb5f1f45314@mail.gmail.com>
Date:	Sat, 5 Jan 2008 16:54:29 -0500
From:	"Luis R. Rodriguez" <mcgrof@...lab.rutgers.edu>
To:	"Hauke Mehrtens" <hauke@...ke-m.de>
Cc:	"Michael Wu" <flamingice@...rmilk.net>,
	linux-kernel@...r.kernel.org,
	"Stefano Brivio" <stefano.brivio@...imi.it>,
	linux-wireless <linux-wireless@...r.kernel.org>
Subject: Re: rtl8187 rate control doesn't work

On Jan 5, 2008 9:47 AM, Hauke Mehrtens <hauke@...ke-m.de> wrote:
> Hi
>
> Now the compat-wireless-2.6 package is working and I get an Internet
> connection with my rtl8187 based card. (It's on an ASUS P5B Deluxe)
>
> I used the compat-wireless-2.6 package for this log, but I have the same
> problem with the version integrated in kernel 2.6.24-rc6
>
> The Access Point is some rooms away so the signal is not the best at my
> location. When starting the device with no fixed rate it wants to
> connect with 54MBit/s and as iwconfig says it was successful but I can't
> ping any device in the wireless LAN. (it's the first part of the log)
> The rate will not be slowed down it stays fixed at 54MBit/s.
>
> After starting the device with rate fixed to 11M I get a connection to
> the Access Point and iwconfig's output looks the same as without fixed
> rate, but I'm able to ping the all devices in the network. (second part
> of the log)
> Now it slows down the rate to 1MBit/s

Seems to be the new PID rate control algorithm. I believe Stephano
(CC'd) was sending some patches for this. Please try changing in
config.mk

>From this value:

CONFIG_MAC80211_RC_DEFAULT=pid

To this:

CONFIG_MAC80211_RC_DEFAULT=simple

and let us know how that goes. Oh and linux-kernel is the wrong list
to use, please just use linux-wireless for future e-mails.

  Luis
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