[PATCH 2/2] ath10k: send (re)assoc peer command when NSS changed

[Kalle Valo]

Janusz Dziedzic <janusz.dziedzic at tieto.com> writes:

> On 17 December 2014 at 11:32, Kalle Valo <kvalo at qca.qualcomm.com> wrote:
>> Janusz Dziedzic <janusz.dziedzic at tieto.com> writes:
>>
>>> Assoc peer command contain information about NSS.
>>> When we will get IEEE80211_RC_NSS_CHANGED we should
>>> also send (re) assoc peer command to be sure firmware
>>> will know about it and RC will work correctly.
>>>
>>> Signed-off-by: Janusz Dziedzic <janusz.dziedzic at tieto.com>
>>
>> Does this fix a user visible bug or is this something you just found
>> from doing code review?
>
> In case we will get only IEEE80211_RC_NSS_CHANGED we will not update
> FW configuration correctly. This is not the problem when IBSS, while
> we update two flags in one step IEEE80211_RC_SUPP_RATES_CHANGED |
> IEEE80211_RC_NSS_CHANGED.
>
> We could have problems when mac80211 will send only NSS_CHANGED flag.
> This seems could happen when we will get WLAN_EID_OPMODE_NOTIF. I
> didn't test such case, but I believe some AP could send such
> notification. So, this fix potential TP issue.

Ok, I'll add to the commit log that this was found during code review
(and doesn't fix a reported bug).

-- 
Kalle Valo