| Message ID | 20151203232006.23658.24160.stgit@localhost6.localdomain6 |
|---|---|
| State | Accepted |
| Delegated to: | Jeff Kirsher |
| Headers | show |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@lists.osuosl.org] On > Behalf Of Emil Tantilov > Sent: Thursday, December 03, 2015 3:20 PM > To: intel-wired-lan@lists.osuosl.org > Subject: [Intel-wired-lan] [PATCH] ixgbe: do not call check_link for ethtool in > ixgbe_get_settings() > > In ixgbe_get_settings() the link status and speed of the interface are determined > based on a read from the LINKS register via the call to mac.ops.check.link(). This > can cause issues where external drivers may end up with unknown speed when > calling ethtool_get_setings(). > > Instead of calling the mac.ops.check_link() we can report the speed from the > adapter structure which is populated by the driver. > > Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> > --- Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index 2c5696a..6ddb2e6 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -185,9 +185,7 @@ static int ixgbe_get_settings(struct net_device *netdev, struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; ixgbe_link_speed supported_link; - u32 link_speed = 0; bool autoneg = false; - bool link_up; hw->mac.ops.get_link_capabilities(hw, &supported_link, &autoneg); @@ -313,9 +311,8 @@ static int ixgbe_get_settings(struct net_device *netdev, break; } - hw->mac.ops.check_link(hw, &link_speed, &link_up, false); - if (link_up) { - switch (link_speed) { + if (netif_carrier_ok(netdev)) { + switch (adapter->link_speed) { case IXGBE_LINK_SPEED_10GB_FULL: ethtool_cmd_speed_set(ecmd, SPEED_10000); break;
In ixgbe_get_settings() the link status and speed of the interface are determined based on a read from the LINKS register via the call to mac.ops.check.link(). This can cause issues where external drivers may end up with unknown speed when calling ethtool_get_setings(). Instead of calling the mac.ops.check_link() we can report the speed from the adapter structure which is populated by the driver. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> --- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)