Call for Test and Review: bwn(4) - another Broadcom Wireless driver

[Weongyo Jeong]

On Sat, Apr 24, 2010 at 12:33:02AM +0200, Gustau P?rez wrote:
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> En/na Weongyo Jeong ha escrit:
> > On Wed, Mar 03, 2010 at 11:10:14AM +0200, Alexandr Rybalko wrote:
> >> On Wed, 3 Mar 2010 00:28:33 -0800
> >> Weongyo Jeong <weongyo.jeong at gmail.com> wrote:
> >
> I've been testing the driver for a few time with AMD64/CURRENT. A
> few time ago I started to see messages like :
> 
> bwn0: unsupported rate 0
> 
> I've checked the code and I found it seems to fail when trying to
> check the TX rate at if_bw.c:9561 (in bwn_ieeerate2hwrate
> routine the rate parameter is 0). I checked where bwn_ieeerate2hwrate
> is called, to see how 'rate' is calculated. This is where I got lost :(
> 
> My AP is FreeBSD 8.0 box with an atheros card. My hostapd works
> with both WPA2-PSK and WPA2-EAP (although
> I thinks this is not the problem) but with default values for rates
> and friends. I then forced my hostapd to use only a subset of transmit
> rates (with supported_rates and basic_rates) with no luck.
> 
> My laptop is a DELL D630 with a BCM4310 UART adapter.
> 
> Any need info will be provided and any help will be appreciated.

First I think we need to know that where rate == 0 comes from.  Rate
information on TX could be got from the following points:

	tp->mgmtrate
	tp->mcastrate
	tp->ucastrate
	ni->ni_txrate

Could you please test these variables to narrow this problem down?

regards,
Weongyo Jeong