VMSC_OFF
val &= ~(VMSC_MASK << VMSC_OFF(vid));
val |= (((1<<sc->numports)-1) << VMSC_OFF(vid));
VMSC_OFF(v->es_vlangroup)) & VMSC_MASK;
val &= ~(VMSC_MASK << VMSC_OFF(v->es_vlangroup));
val |= (v->es_member_ports << VMSC_OFF(v->es_vlangroup));