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i40e: Fix for long link down notification time 

This patch fixes a problem where it could take a very
long time (>100 msec) to print the link down notification.
This problem is fixed by changing how often we update link
info from fw, when link is down. Without this patch, it can
take over 100msec to notify user link is down.

Change-ID: Ib876eb30834c7080792becd13ee093b9cbb35d78
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Carolyn Wyborny 2016-09-27 11:28:52 -07:00 committed by Jeff Kirsher
parent 99dad8b34c
commit ab425cb7ff
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/intel/i40e/i40e_common.c
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@ -2494,7 +2494,10 @@ i40e_status i40e_update_link_info(struct i40e_hw *hw)
if (status)
return status;
if (hw->phy.link_info.link_info & I40E_AQ_MEDIA_AVAILABLE) {
/* extra checking needed to ensure link info to user is timely */
if ((hw->phy.link_info.link_info & I40E_AQ_MEDIA_AVAILABLE) &&
((hw->phy.link_info.link_info & I40E_AQ_LINK_UP) ||
!(hw->phy.link_info_old.link_info & I40E_AQ_LINK_UP))) {
status = i40e_aq_get_phy_capabilities(hw, false, false,
&abilities, NULL);
if (status)