Re: [ath5k-devel] Rookie needs helps with ath5k basics

[Bruno Randolf <br1@einfach.org>]

Hi,

I don't remember all the details but there are various places which can
limit the available channels in ath5k. Check

ath5k_is_standard_channel()
ath5k_setup_channels()
ath5k_setup_bands()

in drivers/net/wireless/ath/ath5k/base.c

Good luck!

bruno

On 11/07/2014 02:27 PM, Sergey Ryazanov wrote:
> Cc linux-wireless since Rostislav Lisovy just working on adding
> 802.11p to the stack.
> 
> 2014-11-07 16:49 GMT+03:00 Hernán Maximiliano González Calderón
> <hernan.gonzalez.calderon@gmail.com>:
>> Hello everyone,
>>
>> I am still working to adapt the ath5k module to transmit in the
>> 5850..5925GHz range, in order to comply with IEEE 802.11p requirements. Our
>> plan is to liberate the code to the community as soon as we develop it.
>>
>> I have already compiled a new regdomains database with wireless-regdb and
>> crda, and we are using the module in ATH5K_TEST_CHANNELS mode. The database
>> is now defined as follows:
>>
>> (2402 - 2472 @ 40), (3, 27)
>> (5170 - 5250 @ 40), (3, 17)
>> (5250 - 5330 @ 40), (3, 20)
>> (5490 - 5600 @ 40), (3, 20)
>> (5650 - 5710 @ 40), (3, 20)
>> (5735 - 5835 @ 40), (3, 30)
>> (5835 - 5925 @ 10), (3, 30)
>>
>> However, when I execute "iw wlan1 ibss join TFG 5850" it returns the -22
>> error number, indicating that we are using a frequency not defined.
>>
>> 2014-02-19 17:22 GMT+01:00 Hernán Maximiliano González Calderón
>> <hernan.gonzalez.calderon@gmail.com>:
>>>
>>> Thanks for the quick reply and sorry for not giving an answer until now,
>>> but first I had to talk with my project advisor. The reason we chose ath5k
>>> was that the cards we bought used it and all information we gather about
>>> this kind of projects were related to that driver.
>>>
>>> I also have talked with my advisor and whatever we accomplish will come
>>> back to the community.
>>>
>>> I am just starting with the project and I am needing some guides, the tips
>>> and info you all gave me will be very helpful. I will keep on working and
>>> will tell you if I get something done.
>>>
>>> Thanks a lot,
>>> Hernán M. G. C.
>>>
>>>
>>> 2014-02-18 2:03 GMT+01:00 Adrian Chadd <adrian@freebsd.org>:
>>>>
>>>> ... because some of the 802.11p NICs are actually ath5k NICs that have
>>>> the relevant bandpass filters for 5.9GHz and high output amplifiers.
>>>>
>>>>
>>>>
>>>> -a
>>>>
>>>>
>>>> On 17 February 2014 01:27, Holger Schurig <holgerschurig@gmail.com>
>>>> wrote:
>>>>> Okay, I admit that I cannot help you, I have no clue on the driver
>>>>> level.
>>>>>
>>>>> But maybe I can help with the methodology. :-)
>>>>>
>>>>> You mention 802.11p (car-to-car-communication). Is there any specific
>>>>> reason you base it on ath5k and not on ath9k?  If you look at the
>>>>> number of commits, then you should see that ath9k is much more lively.
>>>>> People are actively working with that code and might be able to be
>>>>> answer more specific questions.
>>>>> Another thing that I noted: I have seen over the years many requests
>>>>> of information from uni projects in this mailing list. But I'm quite
>>>>> unsure if ever something came back into the Linux kernel. How do you
>>>>> plan to tackle that?  I have the feeling that people are more likely
>>>>> to cooperate if the work doesn't end up in yet another black hole ...
>>>>>
>>>>> And one tip: ask specific questions, not broad ones. For example, look
>>>>> at what features you need to implement 802.11p. Now look at what OSI
>>>>> level this has to be done, e.g. at hardware level (frequency,
>>>>> bandwidth), driver level, or protocoll layer (mac80211, user-space
>>>>> layer (e.g. wpa_supplicant). That would allow you to ask questions not
>>>>> like "Tell me everything", but "Oh, I need to do XYZ, where can I do
>>>>> it?". It might even help you in finding your way, e.g. by looking into
>>>>> git commits inside the ath/ath9k subdirectories that might have
>>>>> something to do with what you need.
>>>>> _______________________________________________
>>>>> ath5k-devel mailing list
>>>>> ath5k-devel@lists.ath5k.org
>>>>> https://lists.ath5k.org/mailman/listinfo/ath5k-devel
>