From c354229fc0f2c441aad7506dc4748cc9e9675767 Mon Sep 17 00:00:00 2001
From: Greg Rose <gregory.v.rose@intel.com>
Date: Fri, 13 Dec 2013 08:38:38 +0000
Subject: [PATCH] i40e: Enable/Disable PF switch LB on SR-IOV configure changes

The PF VSI was never updated to enable or disable internal switch loopback
when VFs were created or destroyed via the sysfs interface.  Add some
helper functions to take care of that.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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