[Intel-wired-lan] [next PATCH S82-V4 2/9] i40evf: Clean-up flags for promisc mode to avoid high polling rate

Bowers, AndrewX andrewx.bowers at intel.com
Thu Nov 16 22:19:37 UTC 2017


> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Alice Michael
> Sent: Tuesday, November 14, 2017 4:01 AM
> To: Michael, Alice <alice.michael at intel.com>; intel-wired-
> lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [next PATCH S82-V4 2/9] i40evf: Clean-up flags for
> promisc mode to avoid high polling rate
> 
> From: Alexander Duyck <alexander.h.duyck at intel.com>
> 
> 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 at intel.com>
> ---
>  drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>




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