Re: [ath9k-devel] IBSS network crashes after one device leaves network

[Oleksij Rempel <linux@rempel-privat.de>]

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Am 20.10.2014 um 21:29 schrieb Johannes Berg:
> On Mon, 2014-10-20 at 21:09 +0200, Oleksij Rempel wrote:
>> Hi Johannes,
>>
>> since this function was added by you, may be you can help here (commit
>> f09603a259). ath9k_htc support max 8 STAs in AP or ADHOC mode.  If more
>> then 8 stations connected, driver will return error, but
>> sta_info_insert_drv_state() setting it to zero.
>> What was initial purpose of this?
> 
> The reason for this is that it's pointless to do anything else - the
> station will try to communicate with us since there's no protocol that
> allows rejecting the link. We therefore don't fail here, and try to
> communicate with the station anyway - that might end up with not having
> proper rate scaling etc. but is still better.
> 
> johannes

hmm.. suddenly rate scaling is not singe limitation of ath9k-htc.
Firmware keeps some information for each STA and trying to reduce usb
bandwidth. If i understand it correctly, ath10k works in the same way.
It means, early or soon we need to work with some hard limits.
-- 
Regards,
Oleksij



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