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Date:	Fri, 1 Jun 2007 04:17:16 -0700
From:	Mithlesh Thukral <mithlesh@...xen.com>
To:	netdev@...r.kernel.org
Cc:	amitkale@...xen.com, jeff@...zik.org, mithlesh@...xen.com,
	netxenproj@...syssoft.com, rob@...xen.com
Subject: [PATCH 5/5] NetXen: Fix link status messages

NetXen: Correct link status messages.
This patch will fix the problem of wrong link status messages
that were reported. 

Signed-off by: Wen Xiong <wenxiong@...ibm.com>
Signed-off by: Mithlesh Thukral <mithlesh@...xen.com>
---

 drivers/net/netxen/netxen_nic.h      |    1 +
 drivers/net/netxen/netxen_nic_init.c |   21 +++++++++++++--------
 drivers/net/netxen/netxen_nic_isr.c  |   23 +++++++++++++++++++++++
 3 files changed, 37 insertions(+), 8 deletions(-)

diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 6ce6e99..b8a5d51 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -1072,6 +1072,7 @@ int netxen_rom_se(struct netxen_adapter 
 int netxen_do_rom_se(struct netxen_adapter *adapter, int addr);
 
 /* Functions from netxen_nic_isr.c */
+int netxen_nic_link_ok(struct netxen_adapter *adapter);
 void netxen_nic_isr_other(struct netxen_adapter *adapter);
 void netxen_indicate_link_status(struct netxen_adapter *adapter, u32 link);
 void netxen_handle_port_int(struct netxen_adapter *adapter, u32 enable);
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index ac93987..0d875c0 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -1036,18 +1036,23 @@ void netxen_watchdog_task(struct work_st
 	if ((adapter->portnum  == 0) && netxen_nic_check_temp(adapter))
 		return;
 
+	if (adapter->handle_phy_intr)
+		adapter->handle_phy_intr(adapter);
+
 	netdev = adapter->netdev;
-	if ((netif_running(netdev)) && !netif_carrier_ok(netdev)) {
-		printk(KERN_INFO "%s port %d, %s carrier is now ok\n",
-		       netxen_nic_driver_name, adapter->portnum, netdev->name);
+	if ((netdev->flags & IFF_UP) && !netif_carrier_ok(netdev) &&
+			netxen_nic_link_ok(adapter) ) {
+		printk(KERN_INFO "%s %s (port %d), Link is up\n",
+			       netxen_nic_driver_name, netdev->name, adapter->portnum);
 		netif_carrier_on(netdev);
-	}
-
-	if (netif_queue_stopped(netdev))
 		netif_wake_queue(netdev);
+	} else if(!(netdev->flags & IFF_UP) && netif_carrier_ok(netdev)) {
+		printk(KERN_ERR "%s %s Link is Down\n",
+				netxen_nic_driver_name, netdev->name);
+		netif_carrier_off(netdev);
+		netif_stop_queue(netdev);
+	}
 
-	if (adapter->handle_phy_intr)
-		adapter->handle_phy_intr(adapter);
 	mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
 }
 
diff --git a/drivers/net/netxen/netxen_nic_isr.c b/drivers/net/netxen/netxen_nic_isr.c
index b213b06..3605ce2 100644
--- a/drivers/net/netxen/netxen_nic_isr.c
+++ b/drivers/net/netxen/netxen_nic_isr.c
@@ -169,6 +169,23 @@ void netxen_nic_gbe_handle_phy_intr(stru
 	netxen_nic_isr_other(adapter);
 }
 
+int netxen_nic_link_ok(struct netxen_adapter *adapter)
+{
+	switch (adapter->ahw.board_type) {
+		case NETXEN_NIC_GBE:
+			return ((adapter->ahw.qg_linksup) & 1);
+
+		case NETXEN_NIC_XGBE:
+			return ((adapter->ahw.xg_linkup) & 1);
+
+		default:
+			printk(KERN_ERR"%s: Function: %s, Unknown board type\n",
+				netxen_nic_driver_name, __FUNCTION__);
+			break;
+	}
+	return 0;
+}
+
 void netxen_nic_xgbe_handle_phy_intr(struct netxen_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
@@ -183,6 +200,10 @@ void netxen_nic_xgbe_handle_phy_intr(str
 		printk(KERN_INFO "%s: %s NIC Link is down\n",
 		       netxen_nic_driver_name, netdev->name);
 		adapter->ahw.xg_linkup = 0;
+		if (netif_running(netdev)) {
+			netif_carrier_off(netdev);
+			netif_stop_queue(netdev);
+		}
 		/* read twice to clear sticky bits */
 		/* WINDOW = 0 */
 		netxen_nic_read_w0(adapter, NETXEN_NIU_XG_STATUS, &val1);
@@ -196,5 +217,7 @@ void netxen_nic_xgbe_handle_phy_intr(str
 		printk(KERN_INFO "%s: %s NIC Link is up\n",
 		       netxen_nic_driver_name, netdev->name);
 		adapter->ahw.xg_linkup = 1;
+		netif_carrier_on(netdev);
+		netif_wake_queue(netdev);
 	}
 }
-
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