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, 0 insertions, 19 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 906ab78..3fb04a8 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1145,25 +1145,6 @@ static int __ieee80211_tx(struct ieee80211_local *local,
 			info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
 					 IEEE80211_TX_CTL_FIRST_FRAGMENT);
 
-		/*
-		 * Internally, we need to have the queue mapping point to
-		 * the real AC queue, not the virtual A-MPDU queue. This
-		 * now finally sets the queue to what the driver wants.
-		 * We will later move this down into the only driver that
-		 * needs it, iwlwifi.
-		 */
-		if (sta && local->hw.ampdu_queues &&
-		    info->flags & IEEE80211_TX_CTL_AMPDU) {
-			unsigned long flags;
-			u8 *qc = ieee80211_get_qos_ctl((void *) skb->data);
-			int tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
-
-			spin_lock_irqsave(&sta->lock, flags);
-			skb_set_queue_mapping(skb, local->hw.queues +
-						   sta->tid_to_tx_q[tid]);
-			spin_unlock_irqrestore(&sta->lock, flags);
-		}
-
 		next = skb->next;
 		len = skb->len;
 		ret = local->ops->tx(local_to_hw(local), skb);