svn commit: r257133 - head/sys/dev/iwn

[symbolics at gmx.com]

On Sun, Oct 27, 2013 at 11:11:07AM +0100, Stefan Farfeleder wrote:
> On Fri, Oct 25, 2013 at 07:44:54PM +0000, Adrian Chadd wrote:
> > Author: adrian
> > Date: Fri Oct 25 19:44:53 2013
> > New Revision: 257133
> > URL: http://svnweb.freebsd.org/changeset/base/257133
> > 
> > Log:
> >   Temporarily disable multi-rate retry (link quality) and eliminate rate
> >   index lookups.
> >   
> >   * My recent(ish) change to iwn(4) and the net80211 rate control API to
> >     support 11n rates broke the link quality table use.  So, until I or
> >     someone else decides to fix it, let's just disable it for now.
> >   
> >   * Teach iwn_tx_data_raw() to use the iwn_rate_to_plcp() function.
> >   
> >   * Eliminate two uses of the net80211 rate index lookup functions - they
> >     are only for legacy rates and they're not needed here.
> >   
> >   This fixes some invalid looking rate control TX issues that showed up
> >   on my 4965 but it doesn't fix the two TX hangs I've noticed. Those look
> >   like DMA related issues.
> >   
> >   Tested:
> >   
> >   * 4965, STA mode
> >   * 5100, STA mode
> 
> Hi Adrian,
> 
> this change completely broke iwn for me. It's a
> 
> iwn0: <Intel WiFi Link 5100> mem 0xf1ffe000-0xf1ffffff irq 17 at device 0.0 on pci12
> 
> built-in device in a Dell Precision m4400.
> 
> With this change, wpa_supplicant cannot associate any longer. In the
> logs I see every few seconds
> 
> Oct 27 10:57:37 mole wpa_supplicant[2256]: wlan0: Trying to associate with xx:xx:xx:xx:xx:xx (SSID='xx' freq=2427 MHz)
> Oct 27 10:57:47 mole wpa_supplicant[2256]: wlan0: Authentication with xx:xx:xx:xx:xx:xx timed out.
> Oct 27 10:57:47 mole wpa_supplicant[2256]: wlan0: CTRL-EVENT-DISCONNECTED bssid=xx:xx:xx:xx:xx:xx reason=3 locally_generated=1
> 
> If I revert just this revision based on a r257155 checkout, it works
> again.

Hi,

I've also had similar or identical problems.

iwn0: <Intel Centrino Advanced-N 6205> mem 0xd4400000-0xd4401fff <...>

If I `ifconfig wlan0` often I see the interface associate and get an IP
address and then immediately disconnect.

--sym