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fm10k: force link to remain down for at least a second on resume events 

When we resume from an AER recovery with many active VFs, the PF sees
many spurious link up and link down events. Prevent this by delaying
link down for at least one second after the resume event.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2016-06-07 16:09:00 -07:00 committed by Jeff Kirsher
parent 0afd20e557
commit 0356b23bcc
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/intel/fm10k/fm10k_pci.c
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@ -2158,6 +2158,10 @@ static int fm10k_handle_resume(struct fm10k_intfc *interface)
interface->host_ready = false;
fm10k_watchdog_host_not_ready(interface);
/* force link to stay down for a second to prevent link flutter */
interface->link_down_event = jiffies + (HZ);
set_bit(__FM10K_LINK_DOWN, &interface->state);
/* clear the service task disable bit to allow service task to start */
clear_bit(__FM10K_SERVICE_DISABLE, &interface->state);
fm10k_service_event_schedule(interface);