[PATCH] ath10k: add dynamic vlan support

Sebastian Gottschall s.gottschall at dd-wrt.com
Tue Apr 24 02:09:10 PDT 2018

consider my comment regarding vlan_ap.
this patch will break wds ap / wds sta support with latest mac80211 (see 
also my post on the wireless mailing list about the breaking patch in 
so AP_VLAN must be masked always for all chipsets. otherwise wds breaks 
and this is not just a guess. i tested it yesterday using this patch and 
the cause of the issue

the following lines

   +    if (test_bit(WMI_SERVICE_PER_PACKET_SW_ENCRYPT, ar->wmi.svc_map)) {
+        ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
+        ar->hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
+    }

must be just

+        ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
+        ar->hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);

everthing else will cause a regression

Am 24.04.2018 um 10:09 schrieb Kalle Valo:
> Manikanta Pubbisetty <mpubbise at codeaurora.org> writes:
>> Mutlicast/broadcast traffic destined for a particular vlan group will
>> always be encrypted in software. To enable dynamic VLANs, it requires
>> driver support for sending software encrypted packets.
>> In ath10k, sending sw encrypted frames is allowed only when we insmod
>> the driver with cryptmode param set to 1, this configuration disables
>> hardware crypto and enables RAW mode implicitly. Since, enabling raw
>> mode has performance impact, this cannot be considered as an ideal
>> solution for supporting VLANs in the driver.
>> As an alternative take, in this approach, cryptographic keys for
>> unicast traffic(per peer PTKs) and keys for non-vlan group traffic
>> will be configured in hardware, allowing hardware encryption for unicast
>> and non-vlan group traffic. Only vlan group traffic will be encrypted in
>> software and pushed to the target with encap mode set to RAW in the TX
>> descriptors.
>> Not all firmwares can support this type of key configuration(having few
>> keys installed in hardware and few only in software); for this purpose a
>> new WMI service flag "WMI_SERVICE_PER_PACKET_SW_ENCRYPT" is introduced to
>> advertise this support.
>> Also, adding the logic required to send sw encrypted frames in raw mode.
>> Tested this change on QCA9984(firmware version 10.4-3.5.3-00057).
>> Signed-off-by: Manikanta Pubbisetty <mpubbise at codeaurora.org>
> Your name in patchwork is wrong and hence my script uses the wrong
> name. Please fix it by registering to patchwork[1] where it's possible
> to change your name during registration, but only one time. If that
> doesn't work then send a request to helpdesk at kernel.org and the admins
> can fix it.
> [1] https://patchwork.kernel.org/register/

Mit freundlichen Grüssen / Regards

Sebastian Gottschall / CTO

NewMedia-NET GmbH - DD-WRT
Firmensitz:  Stubenwaldallee 21a, 64625 Bensheim
Registergericht: Amtsgericht Darmstadt, HRB 25473
Geschäftsführer: Peter Steinhäuser, Christian Scheele
email: s.gottschall at dd-wrt.com
Tel.: +496251-582650 / Fax: +496251-5826565

More information about the ath10k mailing list