From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Tue, 14 Nov 2017 07:00:45 -0500
Subject: i40evf: Clean-up flags for promisc mode to avoid high polling rate
Patch-mainline: v4.16-rc1
Git-commit: f23735aa45f3a5cb301342a4f51be69f22d4aa85
References: bsc#1101816 FATE#325147 FATE#325149
If you enabled and disabled promiscuous mode on a VF you could easily put
it into a state where it would start firing interrupts on all queues at a
rate of 50+ interrupts per second even though there was no traffic present.
The issue seems to have been a stray admin queue feature flag set that was
leaving us in a high polling rate for the adminq task.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
@@ -739,8 +739,10 @@ void i40evf_set_promiscuous(struct i40ev
}
if (!flags) {
- adapter->flags &= ~I40EVF_FLAG_PROMISC_ON;
- adapter->aq_required &= ~I40EVF_FLAG_AQ_RELEASE_PROMISC;
+ adapter->flags &= ~(I40EVF_FLAG_PROMISC_ON |
+ I40EVF_FLAG_ALLMULTI_ON);
+ adapter->aq_required &= ~(I40EVF_FLAG_AQ_RELEASE_PROMISC |
+ I40EVF_FLAG_AQ_RELEASE_ALLMULTI);
dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
}