[net-next 05/12] i40e: Warn when setting link-down-on-close while in MFP

[Jeff Kirsher]

From: Paweł Jabłoński <pawel.jablon...@intel.com>

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.jablon...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 6 ++++++
 1 file changed, 6 insertions(+)

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 @@ static int i40e_set_priv_flags(struct net_device *dev, 
u32 flags)
                }
        }
 
+       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;
-- 
2.14.3