• Sara Sharon's avatar
    iwlwifi: mvm: cleanup pending frames in DQA mode · 9a3fcf91
    Sara Sharon authored
    When a station is asleep, the fw will set it as "asleep".
    All queues that are used only by one station will be stopped by
    the fw.
    
    In pre-DQA mode this was relevant for aggregation queues. However,
    in DQA mode a queue is owned by one station only, so all queues
    will be stopped.
    As a result, we don't expect to get filtered frames back to
    mac80211 and don't have to maintain the entire pending_frames
    state logic, the same way as we do in aggregations.
    
    The correct behavior is to align DQA behavior with the aggregation
    queue behaviour pre-DQA:
    - Don't count pending frames.
    - Let mac80211 know we have frames in these queues so that it can
    properly handle trigger frames.
    
    When a trigger frame is received, mac80211 tells the driver to send
    frames from the queues using release_buffered_frames.
    The driver will tell the fw to let frames out even if the station
    is asleep. This is done by iwl_mvm_sta_modify_sleep_tx_count.
    Reported-and-tested-by: default avatarJens Axboe <axboe@kernel.dk>
    Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    Signed-off-by: default avatarSara Sharon <sara.sharon@intel.com>
    Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
    Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
    9a3fcf91
mac80211.c 118 KB