[ath9k-devel] AP Limitation because of ATH9K_HTC_MAX_STA

[Ben Greear <greearb@candelatech.com>]

On 11/22/2013 06:47 AM, Oleksij Rempel wrote:
> Am 22.11.2013 15:40, schrieb Ben Greear:
>> On 11/22/2013 02:23 AM, Oleksij Rempel wrote:
>>> Am 20.11.2013 20:01, schrieb Gustavo Azambuja:
>>>> Ben, thanks for you reply.
>>>> I need to convert my rPi into a AP (is not an option a "real" AP) to
>>>> get at less 30 stations. You know some way to get a list of
>>>> devices/drivers can support this?
>>>
>>> It's all about USB, RAM and power.
>>> If you use usb to communicate with wireless hardware, then your first
>>> problem is usb - it is too slow! Some times it is too slow even for one
>>> connection. This is why we have usb wifi adapters with internal cpu, ram
>>> and firmware (micro operation system). If you wont to add more
>>> connections you will need more ram and may be more cpu power. This will
>>> need more power from usb, which is limited to 500mA.
>>> In this case, just take some AP, connect it over ethernet and you will
>>> get same result.
>>
>> The RAM is certainly an issue, but just adding more stations should not
>> have much CPU impact as the total throughput is unlikely to increase
>> as more stations are added.
>>
>> Changing software to make better use of RAM is also unlikely to increase
>> power usage, though adding more RAM to the hardware might.
>
> patches are welcome

I'm sure :)

My customers are all interested in /AC these days, so I'm putting my
effort there.  If/when someone opens an /AC firmware to the public
I will be all over it!

>> Out of curiosity, does anyone know how much RAM is on those adapters?
>
> http://wikidevi.com/wiki/AR9271
> http://wikidevi.com/wiki/AR7010

Thanks, that is good info.

Ben


-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com