rmp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SPAN_DETAILS);
rmp->context = mp->context;
rmp->sw_if_index_from = htonl (si - sm->interfaces);
rmp->sw_if_index_to = htonl (i);
rmp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SPAN_DETAILS);
rmp->context = mp->context;
rmp->sw_if_index_from = htonl (si - sm->interfaces);
rmp->sw_if_index_to = htonl (i);