diff mbox

[08/29] ath9k: handle low buffer space for virtual wiphys

Message ID 1257625146-17971-9-git-send-email-lrodriguez@atheros.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Luis Rodriguez Nov. 7, 2009, 8:18 p.m. UTC
None
diff mbox

Patch

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 59ce7ec..4169d2b 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -695,5 +695,8 @@  void ath9k_wiphy_work(struct work_struct *work);
 bool ath9k_all_wiphys_idle(struct ath_softc *sc);
 void ath9k_set_wiphy_idle(struct ath_wiphy *aphy, bool idle);
 
+void ath_mac80211_stop_queue(struct ath_softc *sc, u16 skb_queue);
+void ath_mac80211_start_queue(struct ath_softc *sc, u16 skb_queue);
+
 int ath_tx_get_qnum(struct ath_softc *sc, int qtype, int haltype);
 #endif /* ATH9K_H */
diff --git a/drivers/net/wireless/ath/ath9k/virtual.c b/drivers/net/wireless/ath/ath9k/virtual.c
index 69a871b..0a36b57 100644
--- a/drivers/net/wireless/ath/ath9k/virtual.c
+++ b/drivers/net/wireless/ath/ath9k/virtual.c
@@ -697,3 +697,55 @@  void ath9k_set_wiphy_idle(struct ath_wiphy *aphy, bool idle)
 		  wiphy_name(aphy->hw->wiphy),
 		  idle ? "idle" : "not-idle");
 }
+/* Only bother starting a queue on an active virtual wiphy */
+void ath_mac80211_start_queue(struct ath_softc *sc, u16 skb_queue)
+{
+	struct ieee80211_hw *hw = sc->pri_wiphy->hw;
+	unsigned int i;
+
+	spin_lock_bh(&sc->wiphy_lock);
+
+	/* Start the primary wiphy */
+	if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE) {
+		ieee80211_wake_queue(hw, skb_queue);
+		goto unlock;
+	}
+
+	/* Now start the secondary wiphy queues */
+	for (i = 0; i < sc->num_sec_wiphy; i++) {
+		struct ath_wiphy *aphy = sc->sec_wiphy[i];
+		if (!aphy)
+			continue;
+		if (aphy->state != ATH_WIPHY_ACTIVE)
+			continue;
+
+		hw = aphy->hw;
+		ieee80211_wake_queue(hw, skb_queue);
+		break;
+	}
+
+unlock:
+	spin_unlock_bh(&sc->wiphy_lock);
+}
+
+/* Go ahead and propagate information to all virtual wiphys, it won't hurt */
+void ath_mac80211_stop_queue(struct ath_softc *sc, u16 skb_queue)
+{
+	struct ieee80211_hw *hw = sc->pri_wiphy->hw;
+	unsigned int i;
+
+	spin_lock_bh(&sc->wiphy_lock);
+
+	/* Stop the primary wiphy */
+	ieee80211_stop_queue(hw, skb_queue);
+
+	/* Now stop the secondary wiphy queues */
+	for (i = 0; i < sc->num_sec_wiphy; i++) {
+		struct ath_wiphy *aphy = sc->sec_wiphy[i];
+		if (!aphy)
+			continue;
+		hw = aphy->hw;
+		ieee80211_stop_queue(hw, skb_queue);
+	}
+	spin_unlock_bh(&sc->wiphy_lock);
+}
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index f52295f..977bac5 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -915,9 +915,10 @@  int ath_tx_get_qnum(struct ath_softc *sc, int qtype, int haltype)
 struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb)
 {
 	struct ath_txq *txq = NULL;
+	u16 skb_queue = skb_get_queue_mapping(skb);
 	int qnum;
 
-	qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
+	qnum = ath_get_hal_qnum(skb_queue, sc);
 	txq = &sc->tx.txq[qnum];
 
 	spin_lock_bh(&txq->axq_lock);
@@ -926,7 +927,7 @@  struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb)
 		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_XMIT,
 			  "TX queue: %d is full, depth: %d\n",
 			  qnum, txq->axq_depth);
-		ieee80211_stop_queue(sc->hw, skb_get_queue_mapping(skb));
+		ath_mac80211_stop_queue(sc, skb_queue);
 		txq->stopped = 1;
 		spin_unlock_bh(&txq->axq_lock);
 		return NULL;
@@ -1705,8 +1706,7 @@  int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 		 * on the queue */
 		spin_lock_bh(&txq->axq_lock);
 		if (sc->tx.txq[txq->axq_qnum].axq_depth > 1) {
-			ieee80211_stop_queue(sc->hw,
-				skb_get_queue_mapping(skb));
+			ath_mac80211_stop_queue(sc, skb_get_queue_mapping(skb));
 			txq->stopped = 1;
 		}
 		spin_unlock_bh(&txq->axq_lock);
@@ -1946,7 +1946,7 @@  static void ath_wake_mac80211_queue(struct ath_softc *sc, struct ath_txq *txq)
 	    sc->tx.txq[txq->axq_qnum].axq_depth <= (ATH_TXBUF - 20)) {
 		qnum = ath_get_mac80211_qnum(txq->axq_qnum, sc);
 		if (qnum != -1) {
-			ieee80211_wake_queue(sc->hw, qnum);
+			ath_mac80211_start_queue(sc, qnum);
 			txq->stopped = 0;
 		}
 	}