mac80211: expose txq queue depth and size to drivers
This will allow drivers to make more educated
decisions whether to defer transmission or not.
Relying on wake_tx_queue() call count implicitly
was not possible because it could be called
without queued frame count actually changing on
software tx aggregation start/stop code paths.
It was also not possible to know how long
byte-wise queue was without dequeueing.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 0451f12..453b4e74 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -979,6 +979,7 @@
spin_lock_bh(&txqi->queue.lock);
ieee80211_purge_tx_queue(&local->hw, &txqi->queue);
+ txqi->byte_cnt = 0;
spin_unlock_bh(&txqi->queue.lock);
atomic_set(&sdata->txqs_len[txqi->txq.ac], 0);