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Re: looking for more details on BCM4329, access to 802.11 header

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On Sun, Mar 06, 2011 at 11:11:48PM -0500, George Nychis wrote:
> Hi all,
> 
> I was really hoping to be able to access 802.11 headers of received
> packets on a BCM4329 chip embedded on my HTC Incredible.  However, the
> further and further I dug in to the source code for the kernel and
> BCM4329 driver, the more and more I became less hopeful.  But, I'm
> hoping someone with some more knowledge on this chipset might be able
> to help (especially you, Howard!).
> 

Most development work for Broadcom wifi is occurring in GregKH's staging
tree, I've included the linuxdriverproject ml in the CC.  It's in
drivers/staging/brcm80211, it's a mac80211 driver that includes support
for bcm4329.  You may have more luck with it.

If you're feeling really frisky, try cyanogenmod [1] as your base system,
it's running 2.6.37 on my Nexus One right now.  Here's how to build for
the Incredible [2].  It shouldn't be too far of a leap to get brcm80211
running on it.

As a side note, the same holds for the TI wl1271 (right model?) found in
the HTC G1 and Nokia N900.  The in-kernel driver has much better support
for mac80211.  Android, by default uses the out-of-tree version, the
N900 used the in-tree version.  The N900 could go into monitor mode
without modification once you had root access.  

> The HTC Incredible has the wireless driver loaded as a module, and
> builds it straight from the kernel tree:
> http://android.git.kernel.org/?p=kernel/msm.git;a=tree;f=drivers/net/wireless/bcm4329;h=01f09252ff9b80379e6db6dbb22af4fcba004982;hb=HEAD

AFAICT, this driver will never make it into Linus' tree.  All of Broadcom's
efforts are on merging staging/brcm80211 into mainline.

hth,

Jason.

[1] http://www.cyanogenmod.com
[2]
http://wiki.cyanogenmod.com/index.php?title=Compile_CyanogenMod_for_Incredible
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