"ressource temporarily unavailable" on 2.4 GHz, not on 5GHz

Dennis Borgmann dennis.borgmann at googlemail.com
Thu Jun 17 08:13:41 EDT 2010


Hey guys!

I just reproduced the error with a transmit frequency of 4ms and dmesg
doesn't show up with any new output. I will append dmesg to this mail
anyway.

Apart from that, I will go ahead and search for handling EAGAIN.

Kind regards,
Dennis


Bob Copeland schrieb:
> On Wed, Jun 16, 2010 at 10:05 AM, Dennis Borgmann
> <dennis.borgmann at googlemail.com> wrote:
>   
>> Hello wireless-list!
>> Hello hostapd-list!
>>
>> I am using ath5k with hostapd-0.6.9 on a debian running kernel 2.6.34
>> and I am observing a "ressource temporarily unavailable" - error code 11
>>     
> [...]
>   
>> What could be the problem? Is this due to backoff-times in 2.4 GHz, that
>> don't occur on 5 GHz? Or could this be a bug?
>>     
>
> Does dmesg report any error (e.g. no available txbuf)?
>
> My guess is you have more frequent successful delivery in 5 GHz than in
> ISM band so you aren't running out of send buffers somewhere in the stack.
>
> Of course, your program should expect and handle EAGAIN if you are
> using MSG_DONTWAIT.
>
>   

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