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mac80211: Add TXQ scheduling API

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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>
This commit is contained in:
Toke Høiland-Jørgensen 2017-10-31 12:27:45 +01:00 • committed by Johannes Berg
parent 9de18d8186
commit e937b8da5a
15 changed files with 174 additions and 263 deletions
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3
net/mac80211/main.c
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@ -619,6 +619,9 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
spin_lock_init(&local->rx_path_lock);
spin_lock_init(&local->queue_stop_reason_lock);
INIT_LIST_HEAD(&local->active_txqs);
spin_lock_init(&local->active_txq_lock);
INIT_LIST_HEAD(&local->chanctx_list);
mutex_init(&local->chanctx_mtx);