write_parms.lock_timeout = VXI_DEFAULT_TIMEOUT_MS;
write_parms.flags = DF_END;
write_parms.data.data_len = MIN(len, vxi->max_send_size);
write_parms.lock_timeout = VXI_DEFAULT_TIMEOUT_MS;
write_parms.flags = DF_END;
write_parms.data.data_len = MIN(len, vxi->max_send_size);