Felix Fietkau 08c96abd61
ath9k: prevent aggregation session deadlocks ...
Waiting for all subframes of an existing aggregation session to drain
before allowing mac80211 to start a new one is fragile and deadlocks
caused by this behavior have been observed.
Since mac80211 has proper synchronization for aggregation session
start/stop handling, a better approach to session handling is to simply
allow mac80211 to start a new session at any time. This requires
changing the code to discard any packets outside of the BlockAck window
in the A-MPDU software retry code.
This patch implements the above and also simplifies the code.
Signed-off-by: Felix Fietkau <nbd@openwrt.org >
Signed-off-by: John W. Linville <linville@tuxdriver.com >
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