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Re: 2.6.26 b43 speed issue (redux) and new firmware drivers

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On Wed, Jul 23, 2008 at 01:32:49PM -0700, Gautam Iyer wrote:

>>> I'm writing to inquire about a "new" firmware drivers for Broadcom 43xx:
>>> On April 6, 2008 it looks like broadcom-wl-4.150.10.5.2.tar.bz2 appeared
>>> on http://mirror2.openwrt.org/sources/. The install guide for b43
>>> recommends you use b43-fwcutter-011 and broadcom-wl-4.150.10.5.tar.bz2
>>> I tried to use broadcom-wl-4.150.10.5.2.tar.bz2 with b43-fwcutter-011,
>>> but it complained that the md5 sum was not recognized :). Just wondering
>>> if there is any way to use this new firmware?
>>> Thanks in advance,
>>> GI
>>> PS: The main reason I ask is for "performance": A while ago I reported
>>>     that my Broadcom 4312 gave 2/3 the speed under b43 (2.6.25), when
>>>     compared to ndiswrapper. (I tested by running ttcp, and measuring
>>>     the throughput. I got roughly 3MB/s with ndiswrapper, and
>>>     2 MB/s with b43).
>>>     I just upgraded to 2.6.26, and found that my b43 speed *increased*
>>>     to 2.4MB/s :). So thanks to whomever is responsible! I was also
>>>     hoping that if I upgrade even the firmware I would be able to
>>>     "toast" ndiswrapper. (I transfer large files on my home network
>>>     often, which is why I care about the speed so much.)
>>
>> I do not know what changed between 4.150.10.5 and 4.150.10.2, but I
>> doubt that the firmware in the new driver will make any appreciable
>> difference in the performance of the BCM4312. My guess is that they
>> found some errors in the handling of the N PHY or the LP PHY, which
>> are the two newest devices, and fixed them. Of course, we do need to
>> update fwcutter to test my hypothesis. As a reverse engineer, I also
>> need to see what changed. What version is the Windows driver that you
>> use?
> 
> Hi Larry,
> 
> Thanks for the response. The windows driver I used can be found at
> 
>     http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=3355644&prodNameId=3355645&swEnvOID=1059&swLang=8&mode=2&taskId=135&swItem=ob-55703-1
> 
> It looks like HP released a few newer versions of this driver, which I
> haven't tested yet. I use the b43 drivers all the time anyway.

If it makes any difference -- clicking on the enhancements tab in the
above link says that this driver provides broadcoms 4.170.25.12...

GI

-- 
Bakers trade bread recipes on a knead-to-know basis.

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