NO_DIBS_CLIENT
dibs->dmb_clientid_arr[dmb_node->sba_idx] = NO_DIBS_CLIENT;
if (likely(client_id != NO_DIBS_CLIENT && dibs->subs[client_id]))
memset(dibs->dmb_clientid_arr, NO_DIBS_CLIENT, max_dmbs);
dibs->dmb_clientid_arr[dmb->idx - ISM_DMB_BIT_OFFSET] = NO_DIBS_CLIENT;
if (unlikely(client_id == NO_DIBS_CLIENT ||