iwlwifi: mvm: implement driver RX queues sync command
mac80211 will call the driver whenever there is a race between RSS queues and control path that requires a processing of all pending frames in RSS queues. Implement that by utilizing the internal notification mechanism: queue a message to all queues. When the message is received on a queue it decrements the atomic counter. This guarantees that all pending frames in the RX queue were processed since the message is in order inside the queue. Signed-off-by: NSara Sharon <sara.sharon@intel.com> Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
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