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Felix Fietkau
baac541c05
Frames released from the driver PS queue were all tagged with MORE_DATA and none of them ever carried the EOSP bit, so from the client's point of view a U-APSD service period was started but never finished. Clients that keep their receiver on until EOSP arrives stop sending trigger frames, and all downlink traffic for that station stalls until they give up. ieee80211_sta_eosp() only cleared the service period state inside mac80211, which is why the mismatch went unnoticed. Assign MORE_DATA per frame and set the wire EOSP bit on the last one. If the last released frame is a bufferable MMPDU it has no QoS control field to carry EOSP, so let mac80211 append a QoS-Null frame instead. Also stop handing the remaining frame budget to mt76_release_buffered_frames() once frames have been released from the PS queue: both would signal the end of the same service period. Releasing fewer frames than requested is allowed, and MORE_DATA tells the client to trigger again. Link: https://patch.msgid.link/[email protected] Signed-off-by: Felix Fietkau <[email protected]>