sunvnet_poll_common
netif_napi_add(dev, &port->napi, sunvnet_poll_common);
netif_napi_add(port->vp->dev, &port->napi, sunvnet_poll_common);
EXPORT_SYMBOL_GPL(sunvnet_poll_common);
int sunvnet_poll_common(struct napi_struct *napi, int budget);