libertas: only enable mesh when interface is active

Previously, the mesh was running whenever the appropriate hardware
and firmware was present.

Now we only run the mesh when the interface is running.

Also simplifies interface management a little.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/dev.h

@@ -44,9 +44,7 @@ struct lbs_private {
 	/* Mesh */
 	struct net_device *mesh_dev; /* Virtual device */
 #ifdef CONFIG_LIBERTAS_MESH
-	u32 mesh_connect_status;
 	struct lbs_mesh_stats mstats;
-	int mesh_open;
 	uint16_t mesh_tlv;
 	u8 mesh_ssid[IEEE80211_MAX_SSID_LEN + 1];
 	u8 mesh_ssid_len;

drivers/net/wireless/libertas/main.c

@@ -511,7 +511,7 @@ static int lbs_thread(void *data)
 				if (priv->connect_status == LBS_CONNECTED)
 					netif_wake_queue(priv->dev);
 				if (priv->mesh_dev &&
-				    lbs_mesh_connected(priv))
+				    netif_running(priv->mesh_dev))
 					netif_wake_queue(priv->mesh_dev);
 			}
 		}

drivers/net/wireless/libertas/mesh.c

@@ -269,17 +269,11 @@ static ssize_t lbs_mesh_set(struct device *dev,
 {
 	struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 	int enable;
-	int ret, action = CMD_ACT_MESH_CONFIG_STOP;
 
 	sscanf(buf, "%x", &enable);
 	enable = !!enable;
 	if (enable == !!priv->mesh_dev)
 		return count;
-	if (enable)
-		action = CMD_ACT_MESH_CONFIG_START;
-	ret = lbs_mesh_config(priv, action, priv->channel);
-	if (ret)
-		return ret;
 
 	if (enable)
 		lbs_add_mesh(priv);
@@ -822,8 +816,6 @@ int lbs_init_mesh(struct lbs_private *priv)
 
 	lbs_deb_enter(LBS_DEB_MESH);
 
-	priv->mesh_connect_status = LBS_DISCONNECTED;
-
 	/* Determine mesh_fw_ver from fwrelease and fwcapinfo */
 	/* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
 	/* 5.110.22 have mesh command with 0xa3 command id */
@@ -863,6 +855,8 @@ int lbs_init_mesh(struct lbs_private *priv)
 			priv->mesh_tlv = 0;
 	}
 
+	/* Stop meshing until interface is brought up */
+	lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, priv->channel);
 
 	if (priv->mesh_tlv) {
 		sprintf(priv->mesh_ssid, "mesh");
@@ -909,10 +903,9 @@ static int lbs_mesh_stop(struct net_device *dev)
 	struct lbs_private *priv = dev->ml_priv;
 
 	lbs_deb_enter(LBS_DEB_MESH);
-	spin_lock_irq(&priv->driver_lock);
+	lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, priv->channel);
 
-	priv->mesh_open = 0;
-	priv->mesh_connect_status = LBS_DISCONNECTED;
+	spin_lock_irq(&priv->driver_lock);
 
 	netif_stop_queue(dev);
 	netif_carrier_off(dev);
@@ -942,18 +935,20 @@ static int lbs_mesh_dev_open(struct net_device *dev)
 
 	if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
 		ret = -EBUSY;
+		spin_unlock_irq(&priv->driver_lock);
 		goto out;
 	}
 
-	priv->mesh_open = 1;
-	priv->mesh_connect_status = LBS_CONNECTED;
 	netif_carrier_on(dev);
 
 	if (!priv->tx_pending_len)
 		netif_wake_queue(dev);
- out:
 
 	spin_unlock_irq(&priv->driver_lock);
+
+	ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, priv->channel);
+
+out:
 	lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 	return ret;
 }

drivers/net/wireless/libertas/mesh.h

@@ -63,11 +63,6 @@ void lbs_mesh_ethtool_get_strings(struct net_device *dev,
 	uint32_t stringset, uint8_t *s);
 
 
-/* Accessors */
-
-#define lbs_mesh_open(priv) (priv->mesh_open)
-#define lbs_mesh_connected(priv) (priv->mesh_connect_status == LBS_CONNECTED)
-
 #else
 
 #define lbs_init_mesh(priv)
@@ -77,8 +72,6 @@ void lbs_mesh_ethtool_get_strings(struct net_device *dev,
 #define lbs_mesh_set_dev(priv, dev, rxpd) (dev)
 #define lbs_mesh_set_txpd(priv, dev, txpd)
 #define lbs_mesh_config(priv, enable, chan)
-#define lbs_mesh_open(priv) (0)
-#define lbs_mesh_connected(priv) (0)
 
 #endif
 

drivers/net/wireless/libertas/tx.c

@@ -198,7 +198,7 @@ void lbs_send_tx_feedback(struct lbs_private *priv, u32 try_count)
 	if (priv->connect_status == LBS_CONNECTED)
 		netif_wake_queue(priv->dev);
 
-	if (priv->mesh_dev && lbs_mesh_connected(priv))
+	if (priv->mesh_dev && netif_running(priv->mesh_dev))
 		netif_wake_queue(priv->mesh_dev);
 }
 EXPORT_SYMBOL_GPL(lbs_send_tx_feedback);