i40e: Warn when setting link-down-on-close while in MFP

This patch adds a warning message when the link-down-on-close flag is
setting on. The warning is printed only on MFP devices

Signed-off-by: Paweł Jabłoński <pawel.jablonski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 0fb60336e64b..5ca63c5d36b4 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -4479,6 +4479,12 @@ flags_complete:
                 }
         }
 
+        if ((changed_flags & pf->flags &
+             I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
+            (pf->flags & I40E_FLAG_MFP_ENABLED))
+                dev_warn(&pf->pdev->dev,
+                         "Turning on link-down-on-close flag may affect other partitions\n");
+
         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
                 if (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) {
                         struct i40e_dcbx_config *dcbcfg;