ATH10K and VLAN : Frame with VLAN tag are not sent

[Michal Kazior]

On 5 June 2015 at 12:46, voncken <cedric.voncken at acksys.fr> wrote:
>> De : linux-wireless-owner at vger.kernel.org [mailto:linux-wireless-
>> owner at vger.kernel.org] De la part de Michal Kazior
>> Envoyé : vendredi 5 juin 2015 11:46
>> À : voncken
>> Cc : linux-wireless; ath10k at lists.infradead.org
>> Objet : Re: ATH10K and VLAN : Frame with VLAN tag are not sent
>>
>> [...]
>> >> I see no reason why this should fail. The dot1q encapsulation
>> >> shouldn't influence how firmware behaves.. but maybe I'm wrong.
>> >>
>> >> It's still unclear to me what your topology looks like. Perhaps
>> >> you're having problem with environmental configuration itself? Did
>> >> you try other Wi-Fi device (e.g. ath9k) instead of ath10k?
>> > Yes I tested with ath9k wireless card, the same configuration works.
>> >
>> > I did an interesting test. With ostinato software I generate an ICMP
>> frame without vlan tag. I changed the ethertype in the frame.
>> > I tried with the ethertype 0x800 (IP), 0x801, 0x8892 (PROFINET), 0x8100
>> (dot1q), 0x0600. All frames are sent except when the ethertype is set to
>> 0x8100. It seems the firmware do not accept the ethertype 0x8100.
>>
>> Interesting. This may suggest firmware actually doesn't handle dot1q VLAN
>> tagging properly in NWifi Tx encap mode. Can you try changing it to 802.3
>> encap and re-test, please?
>>
>> --- a/drivers/net/wireless/ath/ath10k/mac.c
>> +++ b/drivers/net/wireless/ath/ath10k/mac.c
>> @@ -3172,7 +3172,7 @@ ath10k_tx_h_get_txmode(struct ath10k *ar, struct
>> ieee80211_vif *vif,
>>         if (ieee80211_is_data_present(fc) && sta && sta->tdls)
>>                 return ATH10K_HW_TXRX_ETHERNET;
>>
>> -       return ATH10K_HW_TXRX_NATIVE_WIFI;
>> +       return ATH10K_HW_TXRX_ETHERNET;
>>  }
>>
>> Note: Your backports may not have the necessary code.. In which case
>> it'll be difficult to do this the easy way. If that's the case I suggest
>> you get latest backports or generate them yourself from the latest
>> kvalo/ath master.
> I will try to change my backport. But it is not easy, because I need to use a cross-compiler. From openwrt website I can download a backport 2015-05-08. I will try to integrate it.
>
> Do you know how I can generate a tar file for openwrt from kale git hub?

That's non-trivial as far as I understand. You could try generating a
quilt patch in openwrt to update ath10k. Either some sort of manual
cherry-picking of the txmode patch for ath10k or create a partial diff
(e.g. only drivers/net/wireless/ath/ath10k) between openwrt backports
and kvalo/ath generated backports.


Michał