libertas: separate mesh connectivity from that of the main interface

The transmit and receive traffic as soon as the mesh interface is
brought up.

Test case 1:  Bring up only the mesh interface and ping.  No need for
any iwconfig commands on the main interface.

$ ifconfig msh0 192.168.5.3
$ iwconfig msh0 channel X
$ ping 192.168.5.2
If ping succeeds, PASS

Test case 2:  Associate with the main interface, and turn off AP.  Mesh
interface should not lose connectivity.

$ iwconfig eth0 mode managed essid "my_ssid"
$ ifconfig msh0 192.168.5.3
$ ping 192.168.5.2
<turn off access point>
If ping continues uninterrupted, PASS

This feature requires firmware version 5.110.19.p0 or newer, available
here: http://dev.laptop.org/pub/firmware/libertas/

Signed-off-by: Ashish Shukla <ashishs@marvell.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 20 insertions, 9 deletions

diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index f0da18c331db..769117916fb3 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -406,13 +406,15 @@ static int lbs_dev_open(struct net_device *dev)
 
         priv->open = 1;
 
-        if (adapter->connect_status == LBS_CONNECTED) {
+        if (adapter->connect_status == LBS_CONNECTED)
                 netif_carrier_on(priv->dev);
-                if (priv->mesh_dev)
-                        netif_carrier_on(priv->mesh_dev);
-        } else {
+        else
                 netif_carrier_off(priv->dev);
-                if (priv->mesh_dev)
+
+        if (priv->mesh_dev) {
+                if (adapter->mesh_connect_status == LBS_CONNECTED)
+                        netif_carrier_on(priv->mesh_dev);
+                else
                         netif_carrier_off(priv->mesh_dev);
         }
 
@@ -433,6 +435,11 @@ static int lbs_mesh_open(struct net_device *dev)
                 return -1;
         priv->mesh_open = 1 ;
         netif_wake_queue(priv->mesh_dev);
+
+        priv->adapter->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;
@@ -548,7 +555,7 @@ static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
 
         SET_MESH_FRAME(skb);
 
-        ret = lbs_hard_start_xmit(skb, priv->dev);
+        ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
         return ret;
 }
@@ -595,9 +602,12 @@ static void lbs_tx_timeout(struct net_device *dev)
                         lbs_send_tx_feedback(priv);
                 } else
                         wake_up_interruptible(&priv->waitq);
-        } else if (priv->adapter->connect_status == LBS_CONNECTED) {
-                netif_wake_queue(priv->dev);
-                if (priv->mesh_dev)
+        } else if (dev == priv->dev) {
+                if (priv->adapter->connect_status == LBS_CONNECTED)
+                        netif_wake_queue(priv->dev);
+
+        } else if (dev == priv->mesh_dev) {
+                if (priv->adapter->mesh_connect_status == LBS_CONNECTED)
                         netif_wake_queue(priv->mesh_dev);
         }
 
@@ -1054,6 +1064,7 @@ static int lbs_init_adapter(lbs_private *priv)
         memset(adapter->current_addr, 0xff, ETH_ALEN);
 
         adapter->connect_status = LBS_DISCONNECTED;
+        adapter->mesh_connect_status = LBS_DISCONNECTED;
         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
         adapter->mode = IW_MODE_INFRA;
         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;