mac80211/iwlwifi: move virtual A-MDPU queue bookkeeping to iwlwifi

This patch removes all the virtual A-MPDU-queue bookkeeping from
mac80211. Curiously, iwlwifi already does its own bookkeeping, so
it doesn't require much changes except where it needs to handle
starting and stopping the queues in mac80211.

To handle the queue stop/wake properly, we rewrite the software
queue number for aggregation frames and internally to iwlwifi keep
track of the queues that map into the same AC queue, and only talk
to mac80211 about the AC queue. The implementation requires calling
two new functions, iwl_stop_queue and iwl_wake_queue instead of the
mac80211 counterparts.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Reinette Chattre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index b13862a598ef..1f117a49c569 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -763,8 +763,10 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
                 hdr->seq_ctrl |= cpu_to_le16(seq_number);
                 seq_number += 0x10;
                 /* aggregation is on for this <sta,tid> */
-                if (info->flags & IEEE80211_TX_CTL_AMPDU)
+                if (info->flags & IEEE80211_TX_CTL_AMPDU) {
                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
+                        swq_id = iwl_virtual_agg_queue_num(swq_id, txq_id);
+                }
                 priv->stations[sta_id].tid[tid].tfds_in_queue++;
         }
 
@@ -895,7 +897,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
                         iwl_txq_update_write_ptr(priv, txq);
                         spin_unlock_irqrestore(&priv->lock, flags);
                 } else {
-                        ieee80211_stop_queue(priv->hw, txq->swq_id);
+                        iwl_stop_queue(priv, txq->swq_id);
                 }
         }
 
@@ -1433,7 +1435,7 @@ void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
                 if ((iwl_queue_space(&txq->q) > txq->q.low_mark) &&
                     priv->mac80211_registered &&
                     (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
-                        ieee80211_wake_queue(priv->hw, txq->swq_id);
+                        iwl_wake_queue(priv, txq->swq_id);
 
                 iwl_txq_check_empty(priv, sta_id, tid, scd_flow);
         }