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>

9 files changed, 47 insertions, 36 deletions

diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 5b2a1c7c5f05..b4d1b1485840 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -1755,7 +1755,8 @@ int lbs_execute_next_command(lbs_private * priv)
                  */
                 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 */
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index 6c1fdb8f11fb..11b93f2cde88 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -979,7 +979,7 @@ int lbs_process_event(lbs_private * priv)
                         break;
                 }
                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
-                adapter->connect_status = LBS_CONNECTED;
+                adapter->mesh_connect_status = LBS_CONNECTED;
                 if (priv->mesh_open == 1) {
                         netif_wake_queue(priv->mesh_dev);
                         netif_carrier_on(priv->mesh_dev);
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index 27db5d4389a7..433b9bdf80f7 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -291,6 +291,7 @@ struct _lbs_adapter {
         /** NIC Operation characteristics */
         u16 currentpacketfilter;
         u32 connect_status;
+        u32 mesh_connect_status;
         u16 regioncode;
         u16 txpowerlevel;
 
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index 043a33d49f46..26176d54c576 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -73,10 +73,11 @@ static void if_usb_write_bulk_callback(struct urb *urb)
                         if (!adapter->cur_cmd)
                                 wake_up_interruptible(&priv->waitq);
 
-                        if ((adapter->connect_status == LBS_CONNECTED)) {
+                        if (adapter->connect_status == LBS_CONNECTED)
                                 netif_wake_queue(dev);
+
+                        if (priv->mesh_dev && (adapter->mesh_connect_status == LBS_CONNECTED))
                                 netif_wake_queue(priv->mesh_dev);
-                        }
                 }
         } else {
                 /* print the failure status number for debug */
diff --git a/drivers/net/wireless/libertas/join.c b/drivers/net/wireless/libertas/join.c
index 90c25f478123..3854d91c90e2 100644
--- a/drivers/net/wireless/libertas/join.c
+++ b/drivers/net/wireless/libertas/join.c
@@ -795,10 +795,6 @@ int lbs_ret_80211_associate(lbs_private *priv,
         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);
-        }
 
         memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
@@ -884,11 +880,6 @@ int lbs_ret_80211_ad_hoc_start(lbs_private *priv,
         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);
-        }
-
         memset(&wrqu, 0, sizeof(wrqu));
         memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
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;
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:
diff --git a/drivers/net/wireless/libertas/tx.c b/drivers/net/wireless/libertas/tx.c
index 93725ce55b10..267274b804c8 100644
--- a/drivers/net/wireless/libertas/tx.c
+++ b/drivers/net/wireless/libertas/tx.c
@@ -273,10 +273,11 @@ void lbs_send_tx_feedback(lbs_private *priv)
         lbs_upload_rx_packet(priv, adapter->currenttxskb);
         adapter->currenttxskb = NULL;
         priv->adapter->TxLockFlag = 0;
-        if (priv->adapter->connect_status == LBS_CONNECTED) {
+
+        if (adapter->connect_status == LBS_CONNECTED)
                 netif_wake_queue(priv->dev);
-                if (priv->mesh_dev)
-                        netif_wake_queue(priv->mesh_dev);
-        }
+
+        if (priv->mesh_dev && (adapter->mesh_connect_status == LBS_CONNECTED))
+                netif_wake_queue(priv->mesh_dev);
 }
 EXPORT_SYMBOL_GPL(lbs_send_tx_feedback);
diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c
index 57fe5f67a05a..2231a65a537d 100644
--- a/drivers/net/wireless/libertas/wext.c
+++ b/drivers/net/wireless/libertas/wext.c
@@ -154,7 +154,8 @@ static void copy_active_data_rates(lbs_adapter *adapter, u8 *rates)
 {
         lbs_deb_enter(LBS_DEB_WEXT);
 
-        if (adapter->connect_status != LBS_CONNECTED)
+        if ((adapter->connect_status != LBS_CONNECTED) &&
+                (adapter->mesh_connect_status != LBS_CONNECTED))
                 memcpy(rates, lbs_bg_rates, MAX_RATES);
         else
                 memcpy(rates, adapter->curbssparams.rates, MAX_RATES);
@@ -274,7 +275,7 @@ static int mesh_get_nick(struct net_device *dev, struct iw_request_info *info,
 
         /* Use nickname to indicate that mesh is on */
 
-        if (adapter->connect_status == LBS_CONNECTED) {
+        if (adapter->mesh_connect_status == LBS_CONNECTED) {
                 strncpy(extra, "Mesh", 12);
                 extra[12] = '\0';
                 dwrq->length = strlen(extra);
@@ -589,7 +590,8 @@ static int lbs_get_range(struct net_device *dev, struct iw_request_info *info,
 
         range->num_frequency = 0;
         if (priv->adapter->enable11d &&
-            adapter->connect_status == LBS_CONNECTED) {
+            (adapter->connect_status == LBS_CONNECTED ||
+            adapter->mesh_connect_status == LBS_CONNECTED)) {
                 u8 chan_no;
                 u8 band;
 
@@ -827,7 +829,8 @@ static struct iw_statistics *lbs_get_wireless_stats(struct net_device *dev)
         priv->wstats.status = adapter->mode;
 
         /* If we're not associated, all quality values are meaningless */
-        if (adapter->connect_status != LBS_CONNECTED)
+        if ((adapter->connect_status != LBS_CONNECTED) &&
+            (adapter->mesh_connect_status != LBS_CONNECTED))
                 goto out;
 
         /* Quality by RSSI */