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

[Adrian Chadd]

Hm, ok.

Can you compile it with IWN_DEBUG and IEEE80211_DEBUG, then do this:

sysctl dev.iwn.0.debug=0x1
wlandebug +rate

I'd like to see what the selected rate is and what the logged reason
for failing to transmit is.

I have a 5100 and it works totally fine for me.

Thanks!



-adrian


On 27 October 2013 03:11, Stefan Farfeleder <stefanf at freebsd.org> 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.
>
> Stefan