igb: add VF trust infrastructure
* Add a per-VF value to know if a VF is trusted, by default don't trust VFs. * Implement netdev op to trust VFs (igb_ndo_set_vf_trust) and add trust status to ndo_get_vf_config output. * Allow a trusted VF to change MAC and MAC filters even if MAC has been administratively set. Signed-off-by: NCorinna Vinschen <vinschen@redhat.com> Tested-by: NAaron Brown <aaron.f.brown@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
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