iwlwifi: pass txq to wake/stop queue

Instead of passing the txq->swq_id, pass the
txq struct directly to make sure that in the
future nobody will pass an invalid number.
Only three places actually change from using
the txq_id or the skb's queue_mapping to now
using txq->swq_id as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-3945.c

@@ -297,7 +297,7 @@ static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
 	if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
 			(txq_id != IWL39_CMD_QUEUE_NUM) &&
 			priv->mac80211_registered)
-		iwl_wake_queue(priv, txq_id);
+		iwl_wake_queue(priv, txq);
 }
 
 /**

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -2239,7 +2239,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 			if (priv->mac80211_registered &&
 			    (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
 			    (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
-				iwl_wake_queue(priv, txq->swq_id);
+				iwl_wake_queue(priv, txq);
 		}
 	} else {
 		info->status.rates[0].count = tx_resp->failure_frame + 1;
@@ -2263,7 +2263,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 
 		if (priv->mac80211_registered &&
 		    (iwl_queue_space(&txq->q) > txq->q.low_mark))
-			iwl_wake_queue(priv, txq_id);
+			iwl_wake_queue(priv, txq);
 	}
 	if (qc && likely(sta_id != IWL_INVALID_STATION))
 		iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);

drivers/net/wireless/iwlwifi/iwl-agn-lib.c

@@ -446,7 +446,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
 			if (priv->mac80211_registered &&
 			    (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
 			    (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
-				iwl_wake_queue(priv, txq->swq_id);
+				iwl_wake_queue(priv, txq);
 		}
 	} else {
 		BUG_ON(txq_id != txq->swq_id);
@@ -456,7 +456,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
 
 		if (priv->mac80211_registered &&
 		    (iwl_queue_space(&txq->q) > txq->q.low_mark))
-			iwl_wake_queue(priv, txq_id);
+			iwl_wake_queue(priv, txq);
 	}
 
 	iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);

drivers/net/wireless/iwlwifi/iwl-agn-tx.c

@@ -783,7 +783,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 			iwl_txq_update_write_ptr(priv, txq);
 			spin_unlock_irqrestore(&priv->lock, flags);
 		} else {
-			iwl_stop_queue(priv, txq->swq_id);
+			iwl_stop_queue(priv, txq);
 		}
 	}
 
@@ -1408,7 +1408,7 @@ void iwlagn_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))
-			iwl_wake_queue(priv, txq->swq_id);
+			iwl_wake_queue(priv, txq);
 
 		iwlagn_txq_check_empty(priv, sta_id, tid, scd_flow);
 	}

drivers/net/wireless/iwlwifi/iwl-helpers.h

@@ -116,8 +116,10 @@ static inline u8 iwl_virtual_agg_queue_num(u8 ac, u8 hwq)
 	return 0x80 | (hwq << 2) | ac;
 }
 
-static inline void iwl_wake_queue(struct iwl_priv *priv, u8 queue)
+static inline void iwl_wake_queue(struct iwl_priv *priv,
+				  struct iwl_tx_queue *txq)
 {
+	u8 queue = txq->swq_id;
 	u8 ac = queue;
 	u8 hwq = queue;
 
@@ -131,8 +133,10 @@ static inline void iwl_wake_queue(struct iwl_priv *priv, u8 queue)
 			ieee80211_wake_queue(priv->hw, ac);
 }
 
-static inline void iwl_stop_queue(struct iwl_priv *priv, u8 queue)
+static inline void iwl_stop_queue(struct iwl_priv *priv,
+				  struct iwl_tx_queue *txq)
 {
+	u8 queue = txq->swq_id;
 	u8 ac = queue;
 	u8 hwq = queue;
 

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -662,7 +662,7 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 			spin_unlock_irqrestore(&priv->lock, flags);
 		}
 
-		iwl_stop_queue(priv, skb_get_queue_mapping(skb));
+		iwl_stop_queue(priv, txq);
 	}
 
 	return 0;