MSR_LINK_SHIFT
bt_msr |= (MSR_LINK_NONE << MSR_LINK_SHIFT);
bt_msr |= (MSR_LINK_ADHOC << MSR_LINK_SHIFT);
bt_msr |= (MSR_LINK_MANAGED << MSR_LINK_SHIFT);
bt_msr |= (MSR_LINK_MASTER << MSR_LINK_SHIFT);