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, 8 insertions, 6 deletions

diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index 30e1a8e8a16a..13a0838aa1e6 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -297,7 +297,8 @@ static void lbs_scan_create_channel_list(lbs_private *priv,
 
         for (rgnidx = 0; rgnidx < ARRAY_SIZE(adapter->region_channel); rgnidx++) {
                 if (priv->adapter->enable11d &&
-                    adapter->connect_status != LBS_CONNECTED) {
+                    (adapter->connect_status != LBS_CONNECTED) &&
+                    (adapter->mesh_connect_status != LBS_CONNECTED)) {
                         /* Scan all the supported chan for the first scan */
                         if (!adapter->universal_channel[rgnidx].valid)
                                 continue;
@@ -897,13 +898,14 @@ int lbs_scan_networks(lbs_private *priv,
         mutex_unlock(&adapter->lock);
 #endif
 
-        if (priv->adapter->connect_status == LBS_CONNECTED) {
+        if (adapter->connect_status == LBS_CONNECTED) {
                 netif_carrier_on(priv->dev);
                 netif_wake_queue(priv->dev);
-                if (priv->mesh_dev) {
-                        netif_carrier_on(priv->mesh_dev);
-                        netif_wake_queue(priv->mesh_dev);
-                }
+        }
+
+        if (priv->mesh_dev && (adapter->mesh_connect_status == LBS_CONNECTED)) {
+                netif_carrier_on(priv->mesh_dev);
+                netif_wake_queue(priv->mesh_dev);
         }
 
 out: