IXGBE_VFMAILBOX_VFU
vf_mailbox |= IXGBE_VFMAILBOX_VFU;
if (ixgbevf_read_mailbox_vf(hw) & IXGBE_VFMAILBOX_VFU) {
vf_mailbox &= ~IXGBE_VFMAILBOX_VFU;