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>
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 5b2a1c7..b4d1b14 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -1755,7 +1755,8 @@
 		 */
 		if ((adapter->psmode != LBS802_11POWERMODECAM) &&
 		    (adapter->psstate == PS_STATE_FULL_POWER) &&
-		    (adapter->connect_status == LBS_CONNECTED)) {
+		    ((adapter->connect_status == LBS_CONNECTED) ||
+		    (adapter->mesh_connect_status == LBS_CONNECTED))) {
 			if (adapter->secinfo.WPAenabled ||
 			    adapter->secinfo.WPA2enabled) {
 				/* check for valid WPA group keys */