software scan fix - please test (Was: why we can't use the net80211 taskqueue for everything)

[Andriy Voskoboinyk]

Sat, 20 Feb 2016 12:06:17 +0200 було написано Andriy Voskoboinyk  
<s3erios at gmail.com>:

>> hi,
>>
>> andriy has a few reviews out that tidy up some things, which I'd reply
>> to, but .. reviews is offline. So, here's the 30 second version:
>>
>> * the net80211 taskqueue runs the software scan engine, and the
>> software scan engine currently sleeps whilst it's running.
>>
>> This means that if you put newstate, deferred transmit, etc into the
>> net80211 taskqueue, then it just won't run during scan.
>>
>> The net80211 software scan thing should be modified to not sleep
>> whilst it's waiting for scan results and instead just kick off another
>> timer event to finish that part of the loop. Then yes, we can just
>> migrate * to the net80211 task queue and use it for all serialisation
>> of a wifi driver.
>>
>> (And yes, I'd like to see that done ASAP..)
>>
>> Thanks,
>>
>>
>> -adrian
>
> Hi,
>
> I have replaced sleeping on conditional variable inside scan task
> with scan_curchan task rescheduling (so this problem should be fixed  
> now).
>
> For everyone, who wishes to test: apply the attached patch
> (merged from D5133, D5137, D5139, D5140, D5142, D5143, D5145, D5147,  
> D5148 and D5152)
> and rebuild + install the kernel. Scan should work as before.
>
> Thanks!

Newer patch includes fix for  
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197498#c7
(D5482) - so, scanning for adhoc/hostap mode should work now.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: patch-net80211-scan.diff
Type: application/octet-stream
Size: 25188 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-wireless/attachments/20160228/033deaf6/attachment.obj>