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Date:      Sun, 28 Feb 2010 21:26:40 -0500
From:      Jim Pingle <lists@pingle.org>
To:        Rui Paulo <rpaulo@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: FreeBSD-8.0 802.11n support with ath/mwl
Message-ID:  <4B8B25E0.4060604@pingle.org>
In-Reply-To: <3BA70425-5413-4E04-AA91-85B699B1D8EF@gmail.com>
References:  <5fbf03c21002270427s74d0f067gb76cfe10c2794121@mail.gmail.com>	<20100227124308.GA28213@mx.techwires.net>	<5fbf03c21002270501l2e388ec9tbdad684d38609861@mail.gmail.com>	<alpine.BSF.2.00.1002272029130.49218@fledge.watson.org> <C816D0F2-67CD-4361-8FD3-376F7619EF46@gmail.com> <4B89E174.1060802@pingle.org> <1B1F52CC-FF36-4432-9345-73BB673EE7E8@gmail.com> <4B8AAA0B.4010402@pingle.org> <3BA70425-5413-4E04-AA91-85B699B1D8EF@gmail.com>

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On 2/28/2010 7:03 PM, Rui Paulo wrote:
> On 28 Feb 2010, at 17:38, Jim Pingle wrote:
>> Are there some other bits that need set in order to have clients
>> associate with HT rates? Or some other prerequisite conditions such as
>> number of attached antennae? I do only have one antenna attached as I
>> didn't have a second pigtail for this test unit's case. The card
>> actually has three connectors.
> 
> Having only 1 antenna connected will likely impact your connection.

I'll hook up two more and try again when I get a chance, I just need to
pull them from a working unit that isn't using its wifi currently.

>> I didn't see hints in the mwl(4), wlan(4), hostapd(8), hostapd.conf(5),
>> or ifconfig(8) man pages about troubleshooting rates. I see plenty of
>> talk in ifconfig(8) about use and control of HT rates, but given what
>> I'm seeing in ifconfig, it should be set to use them. I've tried several
>> combinations of channels and standards (e.g. 11ng, 11na) but always end
>> up with a 54Mbps link.
>>
>> I'd appreciate any more pointers that you (or anyone else reading) may
>> have. I'd like to write up something on the topic once I get it fully
>> operational.
> 
> I don't know what's happening, but I guess your Windows 7 laptop isn't sending the necessary HT rates in the association. Try using wlandebug to see what's happening.

Ah, I wasn't aware of wlandebug(8). However, it doesn't seem to operate
on this mwl(4) card. It sets the value of the sysctl net.wlan.0.debug
and that doesn't show up on my system. Another system with a ral(4) card
does have that sysctl. Judging by the information in the wlandebug(8)
man page it appears as though this may be a side effect of mwl doing
much of the work in firmware.

I appreciate the information though, thanks for taking the time to
reply. I'll continue to work on this again once I relocate some pigtails
from another box.

Jim



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