ath10k + iw set bitrates is causing FW crash

[Krishna Chaitanya]

On Fri, Jul 8, 2016 at 6:29 PM, Manoharan, Rajkumar
<rmanohar at qti.qualcomm.com> wrote:
> I think security failures are due to peer unmap & map upon reassoc. Can you please try below change?
>
> diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
> index 5e1cc8f4c43c..f7f04bb46fc8 100644
> --- a/drivers/net/wireless/ath/ath10k/mac.c
> +++ b/drivers/net/wireless/ath/ath10k/mac.c
> @@ -5745,8 +5745,9 @@ static void ath10k_sta_rc_update_wk(struct work_struct *wk)
>                                     sta->addr, smps, err);
>         }
>
> -       if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
> -           changed & IEEE80211_RC_NSS_CHANGED) {
> +       if ((changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
> +           changed & IEEE80211_RC_NSS_CHANGED) &&
> +           (arvif->vif->type == NL80211_IFTYPE_ADHOC)) {
>                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
>                            sta->addr);

Bottom posting please. I have tried your change i still see the same issue.
Right after connecting i see that packets are encrypted but once it
unset/set "bitrates" plain packets are seen in sniffer.

BTW, i am not rebooting for each driver update, just re-inserting the module,
do i need to do a reboot for each driver change?
 ________________________________________
> From: Krishna Chaitanya <chaitanya.mgit at gmail.com>
> Sent: Friday, July 8, 2016 5:26 PM
> To: Manoharan, Rajkumar
> Cc: linux-wireless; ath10k
> Subject: Re: ath10k + iw set bitrates is causing FW crash
>
> On Fri, Jul 8, 2016 at 3:39 PM, Manoharan, Rajkumar
> <rmanohar at qti.qualcomm.com> wrote:
>>>> I am using ath10k driver with qca988x hw2.0 and trying to limit it to use
>>>> VHT MCS0-7 (iw set bitrates vht-mcs-5 2:0-7).
>>>>
>>>> But the command it causing a FW crash, if it disable HW_HAS_RATE_CONTROL
>>>> no crash is observed but it still uses MCS9.
>>>>
>>>> tree: wireless-drivers-next: commit#535633a5ba4ea2504fa6c33176633becf0e59339
>>>>
>>>> 1) If i disable HW_RATE_CONTROL, will ath10k honor
>>>> the mac80211 rates?
>>>>
>>>
>> Thanks for reporting the issue. Could you please try with below change?
>>
>> diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
>> index 5e1cc8f4c43c..cfa7e01a6103 100644
>> --- a/drivers/net/wireless/ath/ath10k/mac.c
>> +++ b/drivers/net/wireless/ath/ath10k/mac.c
>> @@ -2812,6 +2812,9 @@ static int ath10k_station_assoc(struct ath10k *ar,
>>                 return ret;
>>         }
>>
>> +       if (vif->type != NL80211_IFTYPE_ADHOC)
>> +               peer_arg.peer_reassoc = reassoc;
>> +
>>         ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
>>         if (ret) {
>>                 ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
>
> Thanks Raj, with this fix the rates are 0-7, if i disable then i am
> seeing 0-9, so its
> working.
>
> But i am seeing a weird issues, the moment i give bitrates command,
> ath10k no longer does encryption, link is a WPA2-PSK: AES. Even after
> interface up/down
> it doesn't work.