*/voidnetif_poll(struct netif *netif){structpbuf*in;SYS_ARCH_DECL_PROTECT(lev);do{/* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */SYS_ARCH_PROTECT(lev); in = netif->loop_first;if(in !=NULL) {structpbuf*in_end=in;#ifLWIP_LOOPBACK_MAX_PBUFSu8_...