[PATCH] ipw2200: Fix TX QoS enabled frames problem

This patch works with the ieee80211 stack to set the correct QoS bit to the
ipw2200 card. It fixed the TX failure problem for using WPA with QoS.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ipw2200.c

@@ -6859,61 +6859,55 @@ static int ipw_get_tx_queue_number(struct ipw_priv *priv, u16 priority)
 	return from_priority_to_tx_queue[priority] - 1;
 }
 
-/*
-* add QoS parameter to the TX command
-*/
-static int ipw_qos_set_tx_queue_command(struct ipw_priv *priv,
-					u16 priority,
-					struct tfd_data *tfd, u8 unicast)
+static int ipw_is_qos_active(struct net_device *dev,
+			     struct sk_buff *skb)
 {
-	int ret = 0;
-	int tx_queue_id = 0;
+	struct ipw_priv *priv = ieee80211_priv(dev);
 	struct ieee80211_qos_data *qos_data = NULL;
 	int active, supported;
-	unsigned long flags;
+	u8 *daddr = skb->data + ETH_ALEN;
+	int unicast = !is_multicast_ether_addr(daddr);
 
 	if (!(priv->status & STATUS_ASSOCIATED))
 		return 0;
 
 	qos_data = &priv->assoc_network->qos_data;
 
-	spin_lock_irqsave(&priv->ieee->lock, flags);
-
 	if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
 		if (unicast == 0)
 			qos_data->active = 0;
 		else
 			qos_data->active = qos_data->supported;
 	}
-
 	active = qos_data->active;
 	supported = qos_data->supported;
-
-	spin_unlock_irqrestore(&priv->ieee->lock, flags);
-
 	IPW_DEBUG_QOS("QoS  %d network is QoS active %d  supported %d  "
 		      "unicast %d\n",
 		      priv->qos_data.qos_enable, active, supported, unicast);
-	if (active && priv->qos_data.qos_enable) {
-		ret = from_priority_to_tx_queue[priority];
-		tx_queue_id = ret - 1;
-		IPW_DEBUG_QOS("QoS packet priority is %d \n", priority);
-		if (priority <= 7) {
-			tfd->tx_flags_ext |= DCT_FLAG_EXT_QOS_ENABLED;
-			tfd->tfd.tfd_26.mchdr.qos_ctrl = priority;
-			tfd->tfd.tfd_26.mchdr.frame_ctl |=
-			    IEEE80211_STYPE_QOS_DATA;
+	if (active && priv->qos_data.qos_enable)
+		return 1;
 
-			if (priv->qos_data.qos_no_ack_mask &
-			    (1UL << tx_queue_id)) {
-				tfd->tx_flags &= ~DCT_FLAG_ACK_REQD;
-				tfd->tfd.tfd_26.mchdr.qos_ctrl |=
-				    CTRL_QOS_NO_ACK;
-			}
-		}
+	return 0;
+
+}
+/*
+* add QoS parameter to the TX command
+*/
+static int ipw_qos_set_tx_queue_command(struct ipw_priv *priv,
+					u16 priority,
+					struct tfd_data *tfd)
+{
+	int tx_queue_id = 0;
+
+
+	tx_queue_id = from_priority_to_tx_queue[priority] - 1;
+	tfd->tx_flags_ext |= DCT_FLAG_EXT_QOS_ENABLED;
+
+	if (priv->qos_data.qos_no_ack_mask & (1UL << tx_queue_id)) {
+		tfd->tx_flags &= ~DCT_FLAG_ACK_REQD;
+		tfd->tfd.tfd_26.mchdr.qos_ctrl |= CTRL_QOS_NO_ACK;
 	}
-
-	return ret;
+	return 0;
 }
 
 /*
@@ -9653,7 +9647,7 @@ we need to heavily modify the ieee80211_skb_to_txb.
 static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 			     int pri)
 {
-	struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr *)
+	struct ieee80211_hdr_3addrqos *hdr = (struct ieee80211_hdr_3addrqos *)
 	    txb->fragments[0]->data;
 	int i = 0;
 	struct tfd_frame *tfd;
@@ -9668,9 +9662,9 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 	u16 remaining_bytes;
 	int fc;
 
+	hdr_len = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
 	switch (priv->ieee->iw_mode) {
 	case IW_MODE_ADHOC:
-		hdr_len = IEEE80211_3ADDR_LEN;
 		unicast = !is_multicast_ether_addr(hdr->addr1);
 		id = ipw_find_station(priv, hdr->addr1);
 		if (id == IPW_INVALID_STATION) {
@@ -9687,7 +9681,6 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 	case IW_MODE_INFRA:
 	default:
 		unicast = !is_multicast_ether_addr(hdr->addr3);
-		hdr_len = IEEE80211_3ADDR_LEN;
 		id = 0;
 		break;
 	}
@@ -9766,7 +9759,8 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
 		tfd->u.data.tx_flags |= DCT_FLAG_NO_WEP;
 
 #ifdef CONFIG_IPW_QOS
-	ipw_qos_set_tx_queue_command(priv, pri, &(tfd->u.data), unicast);
+	if (fc & IEEE80211_STYPE_QOS_DATA)
+		ipw_qos_set_tx_queue_command(priv, pri, &(tfd->u.data));
 #endif				/* CONFIG_IPW_QOS */
 
 	/* payload */
@@ -10966,6 +10960,7 @@ static int ipw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	priv->ieee->is_queue_full = ipw_net_is_queue_full;
 
 #ifdef CONFIG_IPW_QOS
+	priv->ieee->is_qos_active = ipw_is_qos_active;
 	priv->ieee->handle_probe_response = ipw_handle_beacon;
 	priv->ieee->handle_beacon = ipw_handle_probe_response;
 	priv->ieee->handle_assoc_response = ipw_handle_assoc_response;