urtwn instable on Beaglebone Black

[Andriy Voskoboinyk]

Tue, 30 Aug 2016 21:33:28 +0300 було написано Otacílio  
<otacilio.neto at bsd.com.br>:

I have no ideas here (it works (mostly) fine on x86 and I have no  
possibility
to check it with ARM).

P.S. Other (ARM-specific?) issues:
https://lists.freebsd.org/pipermail/freebsd-arm/2016-July/014382.html
https://forums.freebsd.org/threads/57396


> Dears
>
> I'm using a beaglebone black to stream video over UDP. I wrote a  
> software and have tested it using a urtwn device + webcam Logitech C920.  
> All is connected using a USB hub with external power source. So urtwn  
> and webcam, both are plugged in the same USB hub. When I plug the hub  
> and run my software on a old notebook intel centrino with FreeBSD  
> 11.0-RC2 AMD64 all works fine. Last night the system stream video all  
> night. But, when I replace the notebook by beaglebone black running  
> FreeBSD 11.0-RC1 with the same USB HUB, the same wrtwn device and same  
> camera, randomly after some time the beaglebone black network shutdown  
> and terminal shows this messages :
>
>
> Network is down
> % urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
> urtwn0: ieee80211_crypto_encap returns NULL.
>
> Then, I need to run
>
> /etc/rc.d/netif stop
>
> /etc/rc.d/netif start
>
> To enable network again. So, someone can give me a hit about what can be  
> this and how to fix?
>
> Thanks a lot
>
> []'s
>
> -Otacilio
>
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