iavf_get_num_vlans_added
u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter);
num_non_zero_vlan = iavf_get_num_vlans_added(adapter);
if (iavf_get_num_vlans_added(adapter) <
u16 current_vlans = iavf_get_num_vlans_added(adapter);
count = max_vlans - iavf_get_num_vlans_added(adapter);