Re: [PATCH v4] Bluetooth: btusb: Add support for queuing during polling interval

[Marcel Holtmann <marcel@holtmann.org>]

Hi Luiz,

> This makes btusb to queue ACL and events during a polling interval
> by using of a delayed work, with the interval working as a time window
> where frames received from different endpoints are considered to be
> arrived at same time and then attempt to resolve potential conflics by
> processing the events ahead of ACL packets.
> 
> It worth noting though that priorizing events over ACL data may result
> in inverting the order compared to how they appeared over the air, for
> instance there may be packets received before a disconnect event that
> will be discarded and unencrypted packets received before encryption
> change which would considered encrypted, because of these potential
> changes on the order the support for queuing during the polling
> interval is not enabled by default so it requires setting
> force_poll_sync debugfs while the adapter is down.
> 
> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
> ---
> v2: Check for intr_interval instead of enable_poll_sync when dispatching
> since the former can only be changed on open/resume.
> v3: Change the way the feature is enabled from module parameter to debugfs
> entry and rename it from enable_poll_sync to force_poll_sync.
> v4: Cosmetic changes to address comments.
> 
> drivers/bluetooth/btusb.c | 129 ++++++++++++++++++++++++++++++++++++--
> 1 file changed, 124 insertions(+), 5 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel