refactor: 完成R8裸机lwIP移植并更新文档

Drivers/LwIP/src/include/netif/ethernetif.h

@@ -5,23 +5,17 @@
 
 extern struct netif ch390_netif;
 
-/**
- * Helper struct to hold private data used to operate your ethernet interface.
- * Keeping the ethernet address of the MAC in this struct is not necessary
- * as it is already kept in the struct netif.
- * But this is only an example, anyway...
- */
 struct ethernetif {
-//    struct eth_addr *ethaddr;
-    /* Add whatever per-interface state that is needed here. */
     uint16_t rx_len;
     uint8_t rx_status;
 };
 
-void init_lwip_netif(const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw);
+void lwip_netif_init(const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw);
 err_t ethernetif_init(struct netif *netif);
 void ethernetif_input(struct netif *netif);
+void ethernetif_check_link(void);
+void ethernetif_poll(void);
+void ethernetif_set_irq_pending(void);
+uint8_t ethernetif_is_irq_pending(void);
 
-void print_netif(struct netif *netif);
-
-#endif /* _ETHERNETIF_H_ */
+#endif