diff mbox series

[net-next,v2,01/11] i40e: Fix for allowing too many MDD events on VF

Message ID 20190503230939.6739-2-jeffrey.t.kirsher@intel.com
State Accepted
Delegated to: David Miller
Headers show
Series 40GbE Intel Wired LAN Driver Updates 2019-05-03 | expand

Commit Message

Kirsher, Jeffrey T May 3, 2019, 11:09 p.m. UTC 
From: Carolyn Wyborny <carolyn.wyborny@intel.com>

This patch changes the driver behavior when detecting a VF MDD event.
It now disables the VF after one event, which indicates a hw detected
problem in the VF.  Before this change, the PF would allow a couple of
events before doing the reset.

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>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 65c2b9d2652b..b52a9d5644b8 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9767,6 +9767,9 @@  static void i40e_handle_mdd_event(struct i40e_pf *pf)
 			vf->num_mdd_events++;
 			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
 				 i);
+			dev_info(&pf->pdev->dev,
+				 "Use PF Control I/F to re-enable the VF\n");
+			set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
 		}
 
 		reg = rd32(hw, I40E_VP_MDET_RX(i));
@@ -9775,11 +9778,6 @@  static void i40e_handle_mdd_event(struct i40e_pf *pf)
 			vf->num_mdd_events++;
 			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
 				 i);
-		}
-
-		if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
-			dev_info(&pf->pdev->dev,
-				 "Too many MDD events on VF %d, disabled\n", i);
 			dev_info(&pf->pdev->dev,
 				 "Use PF Control I/F to re-enable the VF\n");
 			set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);