From d9cd46cd391a132a43cbde7bdac12c16284b618f Mon Sep 17 00:00:00 2001 From: Emil Tantilov Date: Thu, 15 May 2014 07:16:53 +0000 Subject: [PATCH] ixgbe: fix detection of SFP+ capable interfaces In cases where the driver is loaded while there are no SFP+ modules in the cage the interface was not being detected as SFP capable. To account for this the driver called identify_sfp in ixgbe_get_settings to make sure the data is correct. However when there is no SFP+ module in the cage the driver waits for the I2C reads to time out which can take more than a second and will cause issues with tools (like net-snmp) that may poll for that information. This patch resolves the issue by identifying interfaces with no PHY type set as SFP capable which allows the driver to detect the SFP module when the interface is brought up. As result of this we can also remove the identify_sfp call from ixgbe_get_settings. v2: remove the 82599 specific check since we have 82598 devices that are SFP capable. Signed-off-by: Emil Tantilov Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 7 ------- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++ 2 files changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index cc70de2..23e4e6a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -161,13 +161,6 @@ static int ixgbe_get_settings(struct net_device *netdev, bool autoneg = false; bool link_up; - /* SFP type is needed for get_link_capabilities */ - if (hw->phy.media_type & (ixgbe_media_type_fiber | - ixgbe_media_type_fiber_qsfp)) { - if (hw->phy.sfp_type == ixgbe_sfp_type_not_present) - hw->phy.ops.identify_sfp(hw); - } - hw->mac.ops.get_link_capabilities(hw, &supported_link, &autoneg); /* set the supported link speeds */ diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index ea11e2c..e22278a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4656,6 +4656,8 @@ static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) case ixgbe_phy_qsfp_active_unknown: case ixgbe_phy_qsfp_intel: case ixgbe_phy_qsfp_unknown: + /* ixgbe_phy_none is set when no SFP module is present */ + case ixgbe_phy_none: return true; case ixgbe_phy_nl: if (hw->mac.type == ixgbe_mac_82598EB) -- 2.7.4