Frames acknowledged and silently discarded in firmware

[Thomas Pedersen]

On Wed, Mar 14, 2018 at 9:47 AM, Ben Greear <greearb at candelatech.com> wrote:
> On 03/13/2018 05:52 PM, Thomas Pedersen wrote:
>>
>> Javier,
>>
>> On Tue, Mar 13, 2018 at 4:42 PM, Javier Cardona <jcardona at fb.com> wrote:
>>>
>>> Hi,
>>>
>>> We have resolved this issue.  I'm sharing the details in case that might
>>> help others.
>>>
>>> The description of the problem was accurate EXCEPT that the acks that we
>>> observed on the sniffer were not being sent by the failed station (MAP2, in
>>> the context of my original e-mail) but by a third station MAP3.  Those Acks
>>> were sent by MAP3 but with MAP2's address in the Transmitter Address field.
>>>
>>> These anomalous Block Acks were sent because the MAC-ADDRESS-FILTER was
>>> misconfigured at MAP3, which caused that station to respond to addresses
>>> different than its own.  The reasons for this misconfiguration were:
>>>   (1) in mesh (and other) mode(s), the driver creates a hidden monitor
>>> vif along the mesh vif
>>
>>
>> At least since some 10.4 firmware, the hidden monitor vdev is no longer
>> required. See https://www.spinics.net/lists/linux-wireless/msg156475.html
>
>
> I'd like to fix my firmware to support this same feature (in case it does
> not currently
> support it) and add the pertinent firmware feature flags.
>
> Can anyone share the filter flag name(s) that needs to be enabled in the
> firmware for mesh
> mode so that monitor devices are not required?

It should be FIF_ALLMULTI | FIF_OTHER_BSS

-- 
thomas