mac80211: Add TXQ scheduling API

This adds an API to mac80211 to handle scheduling of TXQs and changes the
interface between driver and mac80211 for TXQ handling as follows:

- The wake_tx_queue callback interface no longer includes the TXQ. Instead,
  the driver is expected to retrieve that from ieee80211_next_txq()

- Two new mac80211 functions are added: ieee80211_next_txq() and
  ieee80211_schedule_txq(). The former returns the next TXQ that should be
  scheduled, and is how the driver gets a queue to pull packets from. The
  latter is called internally by mac80211 to start scheduling a queue, and
  the driver is supposed to call it to re-schedule the TXQ after it is
  finished pulling packets from it (unless the queue emptied).

The ath9k and ath10k drivers are changed to use the new API.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index c7f93fd9ca7a..cdd76306cb8f 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -1158,16 +1158,10 @@ drv_tdls_recv_channel_switch(struct ieee80211_local *local,
 	trace_drv_return_void(local);
 }
 
-static inline void drv_wake_tx_queue(struct ieee80211_local *local,
-				     struct txq_info *txq)
+static inline void drv_wake_tx_queue(struct ieee80211_local *local)
 {
-	struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->txq.vif);
-
-	if (!check_sdata_in_driver(sdata))
-		return;
-
-	trace_drv_wake_tx_queue(local, sdata, txq);
-	local->ops->wake_tx_queue(&local->hw, &txq->txq);
+	trace_drv_wake_tx_queue(local);
+	local->ops->wake_tx_queue(&local->hw);
 }
 
 static inline int drv_start_nan(struct ieee80211_local *local,