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

[Janusz Dziedzic]

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.

BR
Janusz