From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 10/14] igb: display a warning message when SmartSpeed works Date: Wed, 24 Apr 2013 21:08:43 -0700 Message-ID: <1366862927-1855-11-git-send-email-jeffrey.t.kirsher@intel.com> References: <1366862927-1855-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Koki Sanagi , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga03.intel.com ([143.182.124.21]:24485 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751332Ab3DYEJK (ORCPT ); Thu, 25 Apr 2013 00:09:10 -0400 In-Reply-To: <1366862927-1855-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Koki Sanagi Current igb driver doesn't tell nothing when Link Speed is downgraded due to SmartSpeed. As a result, users suspect that there is something wrong with NIC. If the cause of it is SmartSpeed, there is no means to replace NIC. This patch make igb notify users that SmartSpeed worked. Signed-off-by: Koki Sanagi Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index b94a3c5..93be6ec 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -3901,6 +3901,7 @@ static void igb_watchdog_task(struct work_struct *work) struct igb_adapter, watchdog_task); struct e1000_hw *hw = &adapter->hw; + struct e1000_phy_info *phy = &hw->phy; struct net_device *netdev = adapter->netdev; u32 link; int i; @@ -3929,6 +3930,11 @@ static void igb_watchdog_task(struct work_struct *work) (ctrl & E1000_CTRL_RFCE) ? "RX" : (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); + /* check if SmartSpeed worked */ + igb_check_downshift(hw); + if (phy->speed_downgraded) + netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); + /* check for thermal sensor event */ if (igb_thermal_sensor_event(hw, E1000_THSTAT_LINK_THROTTLE)) { -- 1.7.11.7