From 8552855f9860b222673e86a88de2543f53f83dc2 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 10 Dec 2007 16:38:18 -0500 Subject: [PATCH] libertas: make rtap and normal modes mutually exclusive, clean up open/stop Signed-off-by: David Woodhouse Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/dev.h | 1 - drivers/net/wireless/libertas/main.c | 133 ++++++++++----------------- 2 files changed, 50 insertions(+), 84 deletions(-) diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h index 468140512a..9921d0cd6f 100644 --- a/drivers/net/wireless/libertas/dev.h +++ b/drivers/net/wireless/libertas/dev.h @@ -99,7 +99,6 @@ struct lbs_mesh_stats { /** Private structure for the MV device */ struct lbs_private { - int open; int mesh_open; int infra_open; int mesh_autostart_enabled; diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c index 3d9de7a1bf..88664024bf 100644 --- a/drivers/net/wireless/libertas/main.c +++ b/drivers/net/wireless/libertas/main.c @@ -274,6 +274,8 @@ static ssize_t lbs_rtap_set(struct device *dev, if(priv->monitormode == monitor_mode) return strlen(buf); if (priv->monitormode == LBS_MONITOR_OFF) { + if (priv->infra_open || priv->mesh_open) + return -EBUSY; if (priv->mode == IW_MODE_INFRA) lbs_send_deauthentication(priv); else if (priv->mode == IW_MODE_ADHOC) @@ -367,84 +369,42 @@ static struct attribute_group lbs_mesh_attr_group = { }; /** - * @brief This function opens the device + * @brief This function opens the ethX or mshX interface * * @param dev A pointer to net_device structure - * @return 0 + * @return 0 or -EBUSY if monitor mode active */ static int lbs_dev_open(struct net_device *dev) { - struct lbs_private *priv = (struct lbs_private *) dev->priv; - - lbs_deb_enter(LBS_DEB_NET); + struct lbs_private *priv = (struct lbs_private *) dev->priv ; + int ret = 0; - priv->open = 1; + spin_lock_irq(&priv->driver_lock); - if (priv->connect_status == LBS_CONNECTED) - netif_carrier_on(priv->dev); - else - netif_carrier_off(priv->dev); + if (priv->monitormode != LBS_MONITOR_OFF) { + ret = -EBUSY; + goto out; + } - if (priv->mesh_dev) { - if (priv->mesh_connect_status == LBS_CONNECTED) - netif_carrier_on(priv->mesh_dev); + if (dev == priv->mesh_dev) { + priv->mesh_open = 1; + priv->mesh_connect_status = LBS_CONNECTED; + netif_carrier_on(dev); + } else { + priv->infra_open = 1; + + if (priv->connect_status == LBS_CONNECTED) + netif_carrier_on(dev); else - netif_carrier_off(priv->mesh_dev); + netif_carrier_off(dev); } - lbs_deb_leave(LBS_DEB_NET); - return 0; -} -/** - * @brief This function opens the mshX interface - * - * @param dev A pointer to net_device structure - * @return 0 - */ -static int lbs_mesh_open(struct net_device *dev) -{ - struct lbs_private *priv = (struct lbs_private *) dev->priv ; - - priv->mesh_open = 1 ; - netif_wake_queue(priv->mesh_dev); - - priv->mesh_connect_status = LBS_CONNECTED; - - netif_carrier_on(priv->mesh_dev); - netif_wake_queue(priv->mesh_dev); - if (priv->infra_open == 0) - return lbs_dev_open(priv->dev) ; - return 0; -} - -/** - * @brief This function opens the ethX interface - * - * @param dev A pointer to net_device structure - * @return 0 - */ -static int lbs_open(struct net_device *dev) -{ - struct lbs_private *priv = (struct lbs_private *) dev->priv ; - - priv->infra_open = 1 ; - netif_wake_queue(priv->dev); - if (priv->open == 0) - return lbs_dev_open(priv->dev) ; - return 0; -} + if (!priv->tx_pending_len) + netif_wake_queue(dev); + out: -static int lbs_dev_close(struct net_device *dev) -{ - struct lbs_private *priv = dev->priv; - - lbs_deb_enter(LBS_DEB_NET); - - netif_carrier_off(priv->dev); - priv->open = 0; - - lbs_deb_leave(LBS_DEB_NET); - return 0; + spin_unlock_irq(&priv->driver_lock); + return ret; } /** @@ -453,16 +413,20 @@ static int lbs_dev_close(struct net_device *dev) * @param dev A pointer to net_device structure * @return 0 */ -static int lbs_mesh_close(struct net_device *dev) +static int lbs_mesh_stop(struct net_device *dev) { struct lbs_private *priv = (struct lbs_private *) (dev->priv); + spin_lock_irq(&priv->driver_lock); + priv->mesh_open = 0; - netif_stop_queue(priv->mesh_dev); - if (priv->infra_open == 0) - return lbs_dev_close(dev); - else - return 0; + priv->mesh_connect_status = LBS_DISCONNECTED; + + netif_stop_queue(dev); + netif_carrier_off(dev); + + spin_unlock_irq(&priv->driver_lock); + return 0; } /** @@ -471,16 +435,18 @@ static int lbs_mesh_close(struct net_device *dev) * @param dev A pointer to net_device structure * @return 0 */ -static int lbs_close(struct net_device *dev) +static int lbs_eth_stop(struct net_device *dev) { struct lbs_private *priv = (struct lbs_private *) dev->priv; - netif_stop_queue(dev); + spin_lock_irq(&priv->driver_lock); + priv->infra_open = 0; - if (priv->mesh_open == 0) - return lbs_dev_close(dev); - else - return 0; + + netif_stop_queue(dev); + + spin_unlock_irq(&priv->driver_lock); + return 0; } static void lbs_tx_timeout(struct net_device *dev) @@ -1065,9 +1031,9 @@ struct lbs_private *lbs_add_card(void *card, struct device *dmdev) priv->infra_open = 0; /* Setup the OS Interface to our functions */ - dev->open = lbs_open; + dev->open = lbs_dev_open; dev->hard_start_xmit = lbs_hard_start_xmit; - dev->stop = lbs_close; + dev->stop = lbs_eth_stop; dev->set_mac_address = lbs_set_mac_address; dev->tx_timeout = lbs_tx_timeout; dev->get_stats = lbs_get_stats; @@ -1237,9 +1203,9 @@ int lbs_add_mesh(struct lbs_private *priv, struct device *dev) mesh_dev->priv = priv; priv->mesh_dev = mesh_dev; - mesh_dev->open = lbs_mesh_open; + mesh_dev->open = lbs_dev_open; mesh_dev->hard_start_xmit = lbs_hard_start_xmit; - mesh_dev->stop = lbs_mesh_close; + mesh_dev->stop = lbs_mesh_stop; mesh_dev->get_stats = lbs_get_stats; mesh_dev->set_mac_address = lbs_set_mac_address; mesh_dev->ethtool_ops = &lbs_ethtool_ops; @@ -1436,6 +1402,7 @@ static void __exit lbs_exit_module(void) static int lbs_rtap_open(struct net_device *dev) { + /* Yes, _stop_ the queue. Because we don't support injection */ netif_carrier_off(dev); netif_stop_queue(dev); return 0; @@ -1449,7 +1416,7 @@ static int lbs_rtap_stop(struct net_device *dev) static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { netif_stop_queue(dev); - return -EOPNOTSUPP; + return NETDEV_TX_BUSY; } static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev) -- 2.39.5