Merge pull request #4737 from mysterywolf/3,1,xformatv3.1.5

[lts 3.1.x] format codes

43 files changed, 378 insertions, 378 deletions

diff --git a/components/net/at/at_socket/at_socket.c b/components/net/at/at_socket/at_socket.c
index ce8559f129..6d4c040856 100644
--- a/components/net/at/at_socket/at_socket.c
+++ b/components/net/at/at_socket/at_socket.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -70,8 +70,8 @@ struct at_socket *at_get_socket(int socket)
                 return at_sock;
             }
         }
-    } 
-    
+    }
+
     rt_hw_interrupt_enable(level);
 
     return RT_NULL;
@@ -289,7 +289,7 @@ static int alloc_empty_socket(rt_slist_t *l)
     rt_slist_for_each(node, &_socket_list)
     {
         at_sock = rt_slist_entry(node, struct at_socket, list);
-        if(at_sock->socket != idx)  
+        if(at_sock->socket != idx)
             break;
         idx++;
         pre_node = node;
@@ -337,7 +337,7 @@ static struct at_socket *alloc_socket_by_device(struct at_device *device, enum a
     {
         goto __err;
     }
-    
+
     sock = &(device->sockets[idx]);
     /* the socket descriptor is the number of sockte lists */
     sock->socket = alloc_empty_socket(&(sock->list));
@@ -508,7 +508,7 @@ int at_closesocket(int socket)
 
     /* deal with TCP server actively disconnect */
     rt_thread_delay(rt_tick_from_millisecond(100));
-    
+
     sock = at_get_socket(socket);
     if (sock == RT_NULL)
     {
@@ -529,7 +529,7 @@ int at_closesocket(int socket)
         }
     }
 
-    free_socket(sock); 
+    free_socket(sock);
     return 0;
 }
 
@@ -603,7 +603,7 @@ int at_bind(int socket, const struct sockaddr *name, socklen_t namelen)
 
     /* input ip address is different from device ip address */
     if (ip_addr_cmp(&input_ipaddr, &local_ipaddr) == 0)
-    {   
+    {
         struct at_socket *new_sock = RT_NULL;
         struct at_device *new_device = RT_NULL;
         enum at_socket_type type = sock->type;
@@ -613,7 +613,7 @@ int at_bind(int socket, const struct sockaddr *name, socklen_t namelen)
         {
             return -1;
         }
-        
+
         extern struct at_device *at_device_get_by_ipaddr(ip_addr_t *ip_addr);
         new_device = at_device_get_by_ipaddr(&input_ipaddr);
         if (new_device == RT_NULL)
@@ -649,7 +649,7 @@ static void at_recv_notice_cb(struct at_socket *sock, at_socket_evt_t event, con
 {
     RT_ASSERT(buff);
     RT_ASSERT(event == AT_SOCKET_EVT_RECV);
-    
+
     /* check the socket object status */
     if (sock->magic != AT_SOCKET_MAGIC)
     {
@@ -675,7 +675,7 @@ static void at_closed_notice_cb(struct at_socket *sock, at_socket_evt_t event, c
     {
         return;
     }
-    
+
     at_do_event_changes(sock, AT_EVENT_RECV, RT_TRUE);
     at_do_event_changes(sock, AT_EVENT_ERROR, RT_TRUE);
 
@@ -731,7 +731,7 @@ __exit:
     {
         at_do_event_changes(sock, AT_EVENT_SEND, RT_TRUE);
     }
-    
+
     return result;
 }
 
@@ -780,7 +780,7 @@ int at_recvfrom(int socket, void *mem, size_t len, int flags, struct sockaddr *f
         goto __exit;
     }
     rt_mutex_release(sock->recv_lock);
-        
+
     /* socket passively closed, receive function return 0 */
     if (sock->state == AT_SOCKET_CLOSED)
     {
@@ -821,7 +821,7 @@ int at_recvfrom(int socket, void *mem, size_t len, int flags, struct sockaddr *f
             goto __exit;
         }
         else
-        {         
+        {
 
             /* get receive buffer to receiver ring buffer */
             rt_mutex_take(sock->recv_lock, RT_WAITING_FOREVER);
@@ -945,7 +945,7 @@ __exit:
     {
         if (sock != RT_NULL)
         {
-            at_do_event_changes(sock, AT_EVENT_ERROR, RT_TRUE);   
+            at_do_event_changes(sock, AT_EVENT_ERROR, RT_TRUE);
         }
     }
     else
@@ -1138,13 +1138,13 @@ struct hostent *at_gethostbyname(const char *name)
 
 #if NETDEV_IPV4 && NETDEV_IPV6
     addr.u_addr.ip4.addr = ipstr_to_u32(ipstr);
-	addr.type = IPADDR_TYPE_V4;
+    addr.type = IPADDR_TYPE_V4;
 #elif NETDEV_IPV4
     addr.addr = ipstr_to_u32(ipstr);
 #elif NETDEV_IPV6
 #error "not support IPV6."
 #endif /* NETDEV_IPV4 && NETDEV_IPV6 */
- 
+
     /* fill hostent structure */
     s_hostent_addr = addr;
     s_phostent_addr[0] = &s_hostent_addr;
@@ -1243,8 +1243,8 @@ int at_getaddrinfo(const char *nodename, const char *servname,
             {
                 strncpy(ip_str, nodename, strlen(nodename));
             }
-            
-        #if NETDEV_IPV4 && NETDEV_IPV6 
+
+        #if NETDEV_IPV4 && NETDEV_IPV6
             addr.type = IPADDR_TYPE_V4;
             if ((addr.u_addr.ip4.addr = ipstr_to_u32(ip_str)) == 0)
             {
@@ -1254,7 +1254,7 @@ int at_getaddrinfo(const char *nodename, const char *servname,
             addr.addr = ipstr_to_u32(ip_str);
         #elif NETDEV_IPV6
         #error "not support IPV6."
-        #endif /* NETDEV_IPV4 && NETDEV_IPV6 */  
+        #endif /* NETDEV_IPV4 && NETDEV_IPV6 */
         }
     }
     else
diff --git a/components/net/at/at_socket/at_socket.h b/components/net/at/at_socket/at_socket.h
index 3317579f05..caac6d2d5d 100644
--- a/components/net/at/at_socket/at_socket.h
+++ b/components/net/at/at_socket/at_socket.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/at/include/at.h b/components/net/at/include/at.h
index 2d0e270f6a..7d9de6b353 100644
--- a/components/net/at/include/at.h
+++ b/components/net/at/include/at.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/at/include/at_log.h b/components/net/at/include/at_log.h
index 9e133561f7..acb5b34ecc 100644
--- a/components/net/at/include/at_log.h
+++ b/components/net/at/include/at_log.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/at/src/at_base_cmd.c b/components/net/at/src/at_base_cmd.c
index b182477f9b..00720c87b2 100644
--- a/components/net/at/src/at_base_cmd.c
+++ b/components/net/at/src/at_base_cmd.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/at/src/at_cli.c b/components/net/at/src/at_cli.c
index e39a913357..25fbb708f4 100644
--- a/components/net/at/src/at_cli.c
+++ b/components/net/at/src/at_cli.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -27,7 +27,7 @@ static rt_err_t (*odev_rx_ind)(rt_device_t dev, rt_size_t size) = RT_NULL;
 #ifdef AT_USING_CLIENT
 static struct rt_semaphore client_rx_notice;
 static struct rt_ringbuffer *client_rx_fifo = RT_NULL;
-#endif 
+#endif
 
 static char console_getchar(void)
 {
diff --git a/components/net/at/src/at_client.c b/components/net/at/src/at_client.c
index b9d0ee89cb..d636460c2d 100644
--- a/components/net/at/src/at_client.c
+++ b/components/net/at/src/at_client.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -579,7 +579,7 @@ int at_obj_set_urc_table(at_client_t client, const struct at_urc *urc_table, rt_
         client->urc_table[client->urc_table_size].urc = urc_table;
         client->urc_table[client->urc_table_size].urc_size = table_sz;
         client->urc_table_size++;
-        
+
         rt_free(old_urc_table);
     }
 
diff --git a/components/net/at/src/at_server.c b/components/net/at/src/at_server.c
index 81d00951f5..bfbbbae2d3 100644
--- a/components/net/at/src/at_server.c
+++ b/components/net/at/src/at_server.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/at/src/at_utils.c b/components/net/at/src/at_utils.c
index 7d26425f56..8d8887fe5e 100644
--- a/components/net/at/src/at_utils.c
+++ b/components/net/at/src/at_utils.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/lwip-1.4.1/src/arch/sys_arch.c b/components/net/lwip-1.4.1/src/arch/sys_arch.c
index d9a11a7e59..b411563f3e 100644
--- a/components/net/lwip-1.4.1/src/arch/sys_arch.c
+++ b/components/net/lwip-1.4.1/src/arch/sys_arch.c
@@ -1,5 +1,5 @@
 /*
- * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -195,9 +195,9 @@ int lwip_system_init(void)
         netifapi_netif_set_addr(netif_default, &ipaddr, &netmask, &gw);
     }
 #endif
-	rt_kprintf("lwIP-%d.%d.%d initialized!\n", LWIP_VERSION_MAJOR, LWIP_VERSION_MINOR, LWIP_VERSION_REVISION);
+    rt_kprintf("lwIP-%d.%d.%d initialized!\n", LWIP_VERSION_MAJOR, LWIP_VERSION_MINOR, LWIP_VERSION_REVISION);
 
-	return 0;
+    return 0;
 }
 INIT_PREV_EXPORT(lwip_system_init);
 
@@ -618,7 +618,7 @@ u32_t sys_jiffies(void)
 
 u32_t sys_now(void)
 {
-	return rt_tick_get() * (1000 / RT_TICK_PER_SECOND);
+    return rt_tick_get() * (1000 / RT_TICK_PER_SECOND);
 }
 
 #ifdef RT_LWIP_PPP
diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip-1.4.1/src/netif/ethernetif.c
index 4a8ff12521..052ee1bb01 100644
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * COPYRIGHT (C) 2006-2010, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -59,9 +59,9 @@
 #define netifapi_netif_set_link_down(n)    netifapi_netif_common(n, netif_set_link_down, NULL)
 
 #ifndef RT_LWIP_ETHTHREAD_PRIORITY
-#define RT_ETHERNETIF_THREAD_PREORITY	0x90
+#define RT_ETHERNETIF_THREAD_PREORITY   0x90
 #else
-#define RT_ETHERNETIF_THREAD_PREORITY	RT_LWIP_ETHTHREAD_PRIORITY
+#define RT_ETHERNETIF_THREAD_PREORITY   RT_LWIP_ETHTHREAD_PRIORITY
 #endif
 
 #ifndef LWIP_NO_TX_THREAD
@@ -70,8 +70,8 @@
  */
 struct eth_tx_msg
 {
-    struct netif 	*netif;
-    struct pbuf 	*buf;
+    struct netif    *netif;
+    struct pbuf     *buf;
 };
 
 static struct rt_mailbox eth_tx_thread_mb;
@@ -156,16 +156,16 @@ static int lwip_netdev_set_dns_server(struct netdev *netif, uint8_t dns_num, ip_
 static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
 {
     netdev_low_level_set_dhcp_status(netif, is_enabled);
-	
+
     if(RT_TRUE == is_enabled)
     {
         dhcp_start((struct netif *)netif->user_data);
     }
     else
     {
-        dhcp_stop((struct netif *)netif->user_data);    
+        dhcp_stop((struct netif *)netif->user_data);
     }
-	
+
     return ERR_OK;
 }
 #endif /* RT_LWIP_DHCP */
@@ -368,7 +368,7 @@ static err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p)
     struct eth_tx_msg msg;
     struct eth_device* enetif;
 
-	RT_ASSERT(netif != RT_NULL);
+    RT_ASSERT(netif != RT_NULL);
     enetif = (struct eth_device*)netif->state;
 
     /* send a message to eth tx thread */
@@ -382,13 +382,13 @@ static err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p)
 #else
     struct eth_device* enetif;
 
-	RT_ASSERT(netif != RT_NULL);
+    RT_ASSERT(netif != RT_NULL);
     enetif = (struct eth_device*)netif->state;
 
-	if (enetif->eth_tx(&(enetif->parent), p) != RT_EOK)
-	{
-		return ERR_IF;
-	}
+    if (enetif->eth_tx(&(enetif->parent), p) != RT_EOK)
+    {
+        return ERR_IF;
+    }
 #endif
     return ERR_OK;
 }
@@ -474,16 +474,16 @@ rt_err_t eth_device_init_with_flag(struct eth_device *dev, const char *name, rt_
     netif->name[1] = name[1];
 
     /* set hw address to 6 */
-    netif->hwaddr_len 	= 6;
+    netif->hwaddr_len   = 6;
     /* maximum transfer unit */
-    netif->mtu			= ETHERNET_MTU;
+    netif->mtu          = ETHERNET_MTU;
 
     /* get hardware MAC address */
     rt_device_control(&(dev->parent), NIOCTL_GADDR, netif->hwaddr);
 
     /* set output */
-    netif->output		= etharp_output;
-    netif->linkoutput	= ethernetif_linkoutput;
+    netif->output       = etharp_output;
+    netif->linkoutput   = ethernetif_linkoutput;
 
     /* if tcp thread has been started up, we add this netif to the system */
     if (rt_thread_find("tcpip") != RT_NULL)
@@ -565,12 +565,12 @@ rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
 /* NOTE: please not use it in interrupt when no RxThread exist */
 rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
 {
-	if (up == RT_TRUE)
-		netifapi_netif_set_link_up(dev->netif);
-	else
-		netifapi_netif_set_link_down(dev->netif);
+    if (up == RT_TRUE)
+        netifapi_netif_set_link_up(dev->netif);
+    else
+        netifapi_netif_set_link_down(dev->netif);
 
-	return RT_EOK;
+    return RT_EOK;
 }
 #endif
 
@@ -638,8 +638,8 @@ static void eth_rx_thread_entry(void* parameter)
             /* receive all of buffer */
             while (1)
             {
-            	if(device->eth_rx == RT_NULL) break;
-            	
+                if(device->eth_rx == RT_NULL) break;
+
                 p = device->eth_rx(&(device->parent));
                 if (p != RT_NULL)
                 {
diff --git a/components/net/lwip-2.0.2/src/arch/sys_arch.c b/components/net/lwip-2.0.2/src/arch/sys_arch.c
index 7a814f403e..b0d4709c93 100644
--- a/components/net/lwip-2.0.2/src/arch/sys_arch.c
+++ b/components/net/lwip-2.0.2/src/arch/sys_arch.c
@@ -1,5 +1,5 @@
 /*
- * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
diff --git a/components/net/lwip-2.0.2/src/netif/ethernetif.c b/components/net/lwip-2.0.2/src/netif/ethernetif.c
index 12c931fbb4..b49125c194 100644
--- a/components/net/lwip-2.0.2/src/netif/ethernetif.c
+++ b/components/net/lwip-2.0.2/src/netif/ethernetif.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -172,7 +172,7 @@ static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
     }
     else
     {
-        dhcp_stop((struct netif *)netif->user_data);    
+        dhcp_stop((struct netif *)netif->user_data);
     }
     return ERR_OK;
 }
@@ -183,7 +183,7 @@ static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
 extern int lwip_ping_recv(int s, int *ttl);
 extern err_t lwip_ping_send(int s, ip_addr_t *addr, int size);
 
-int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len, 
+int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
                         uint32_t timeout, struct netdev_ping_resp *ping_resp)
 {
     int s, ttl, recv_len, result = 0;
@@ -198,7 +198,7 @@ int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
     struct addrinfo hint, *res = RT_NULL;
     struct sockaddr_in *h = RT_NULL;
     struct in_addr ina;
-    
+
     RT_ASSERT(netif);
     RT_ASSERT(host);
     RT_ASSERT(ping_resp);
@@ -217,7 +217,7 @@ int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
         return -RT_ERROR;
     }
     rt_memcpy(&(ping_resp->ip_addr), &target_addr, sizeof(ip_addr_t));
-    
+
     /* new a socket */
     if ((s = lwip_socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP)) < 0)
     {
@@ -285,7 +285,7 @@ const struct netdev_ops lwip_netdev_ops =
     lwip_netdev_set_addr_info,
 #ifdef RT_LWIP_DNS
     lwip_netdev_set_dns_server,
-#else 
+#else
     NULL,
 #endif /* RT_LWIP_DNS */
 
@@ -333,8 +333,8 @@ static int netdev_add(struct netif *lwip_netif)
 
     rt_strncpy(name, lwip_netif->name, LWIP_NETIF_NAME_LEN);
     result = netdev_register(netdev, name, (void *)lwip_netif);
-	
-    /* Update netdev info after registered */	
+
+    /* Update netdev info after registered */
     netdev->flags = lwip_netif->flags;
     netdev->mtu = lwip_netif->mtu;
     netdev->ops = &lwip_netdev_ops;
@@ -343,7 +343,7 @@ static int netdev_add(struct netif *lwip_netif)
     netdev->ip_addr = lwip_netif->ip_addr;
     netdev->gw = lwip_netif->gw;
     netdev->netmask = lwip_netif->netmask;
-	
+
 #ifdef RT_LWIP_DHCP
     netdev_low_level_set_dhcp_status(netdev, RT_TRUE);
 #endif
@@ -422,7 +422,7 @@ static err_t eth_netif_device_init(struct netif *netif)
     /* network interface device register */
     netdev_add(netif);
 #endif /* RT_USING_NETDEV */
-    
+
     ethif = (struct eth_device*)netif->state;
     if (ethif != RT_NULL)
     {
@@ -541,7 +541,7 @@ rt_err_t eth_device_init_with_flag(struct eth_device *dev, const char *name, rt_
         ipaddr.addr = inet_addr(RT_LWIP_IPADDR);
         gw.addr = inet_addr(RT_LWIP_GWADDR);
         netmask.addr = inet_addr(RT_LWIP_MSKADDR);
-#else        
+#else
         IP4_ADDR(&ipaddr, 0, 0, 0, 0);
         IP4_ADDR(&gw, 0, 0, 0, 0);
         IP4_ADDR(&netmask, 0, 0, 0, 0);
@@ -693,7 +693,7 @@ static void eth_rx_thread_entry(void* parameter)
             while (1)
             {
                 if(device->eth_rx == RT_NULL) break;
-                
+
                 p = device->eth_rx(&(device->parent));
                 if (p != RT_NULL)
                 {
@@ -716,9 +716,9 @@ static void eth_rx_thread_entry(void* parameter)
 }
 #endif
 
-/* this function does not need, 
- * use eth_system_device_init_private() 
- * call by lwip_system_init(). 
+/* this function does not need,
+ * use eth_system_device_init_private()
+ * call by lwip_system_init().
  */
 int eth_system_device_init(void)
 {
@@ -861,27 +861,27 @@ void list_if(void)
         rt_kprintf("gw address: %s\n", ipaddr_ntoa(&(netif->gw)));
         rt_kprintf("net mask  : %s\n", ipaddr_ntoa(&(netif->netmask)));
 #if LWIP_IPV6
-		{
-			ip6_addr_t *addr;
-			int addr_state;
-			int i;
-			
-			addr = (ip6_addr_t *)&netif->ip6_addr[0];
-			addr_state = netif->ip6_addr_state[0];
-			
-			rt_kprintf("\nipv6 link-local: %s state:%02X %s\n", ip6addr_ntoa(addr), 
-			addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
-			
-			for(i=1; i<LWIP_IPV6_NUM_ADDRESSES; i++)
-			{
-				addr = (ip6_addr_t *)&netif->ip6_addr[i];
-				addr_state = netif->ip6_addr_state[i];
-			
-				rt_kprintf("ipv6[%d] address: %s state:%02X %s\n", i, ip6addr_ntoa(addr), 
-				addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
-			}
-			
-		}
+        {
+            ip6_addr_t *addr;
+            int addr_state;
+            int i;
+
+            addr = (ip6_addr_t *)&netif->ip6_addr[0];
+            addr_state = netif->ip6_addr_state[0];
+
+            rt_kprintf("\nipv6 link-local: %s state:%02X %s\n", ip6addr_ntoa(addr),
+            addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
+
+            for(i=1; i<LWIP_IPV6_NUM_ADDRESSES; i++)
+            {
+                addr = (ip6_addr_t *)&netif->ip6_addr[i];
+                addr_state = netif->ip6_addr_state[i];
+
+                rt_kprintf("ipv6[%d] address: %s state:%02X %s\n", i, ip6addr_ntoa(addr),
+                addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
+            }
+
+        }
         rt_kprintf("\r\n");
 #endif /* LWIP_IPV6 */
         netif = netif->next;
diff --git a/components/net/lwip-2.1.2/src/arch/sys_arch.c b/components/net/lwip-2.1.2/src/arch/sys_arch.c
index a0eeed1073..c97609a4ea 100644
--- a/components/net/lwip-2.1.2/src/arch/sys_arch.c
+++ b/components/net/lwip-2.1.2/src/arch/sys_arch.c
@@ -1,5 +1,5 @@
 /*
- * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
diff --git a/components/net/lwip-2.1.2/src/netif/ethernetif.c b/components/net/lwip-2.1.2/src/netif/ethernetif.c
index 52bd0fb7b6..829978c139 100644
--- a/components/net/lwip-2.1.2/src/netif/ethernetif.c
+++ b/components/net/lwip-2.1.2/src/netif/ethernetif.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2021, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -163,16 +163,16 @@ static int lwip_netdev_set_dns_server(struct netdev *netif, uint8_t dns_num, ip_
 static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
 {
     netdev_low_level_set_dhcp_status(netif, is_enabled);
-	
+
     if(RT_TRUE == is_enabled)
     {
         dhcp_start((struct netif *)netif->user_data);
     }
     else
     {
-        dhcp_stop((struct netif *)netif->user_data);    
+        dhcp_stop((struct netif *)netif->user_data);
     }
-	
+
     return ERR_OK;
 }
 #endif /* RT_LWIP_DHCP */
@@ -182,7 +182,7 @@ static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
 extern int lwip_ping_recv(int s, int *ttl);
 extern err_t lwip_ping_send(int s, ip_addr_t *addr, int size);
 
-int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len, 
+int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
                         uint32_t timeout, struct netdev_ping_resp *ping_resp)
 {
     int s, ttl, recv_len, result = 0;
@@ -197,7 +197,7 @@ int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
     struct addrinfo hint, *res = RT_NULL;
     struct sockaddr_in *h = RT_NULL;
     struct in_addr ina;
-    
+
     RT_ASSERT(netif);
     RT_ASSERT(host);
     RT_ASSERT(ping_resp);
@@ -216,7 +216,7 @@ int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
         return -RT_ERROR;
     }
     rt_memcpy(&(ping_resp->ip_addr), &target_addr, sizeof(ip_addr_t));
-    
+
     /* new a socket */
     if ((s = lwip_socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP)) < 0)
     {
@@ -284,7 +284,7 @@ const struct netdev_ops lwip_netdev_ops =
     lwip_netdev_set_addr_info,
 #ifdef RT_LWIP_DNS
     lwip_netdev_set_dns_server,
-#else 
+#else
     NULL,
 #endif /* RT_LWIP_DNS */
 
@@ -323,7 +323,7 @@ static int netdev_add(struct netif *lwip_netif)
     {
         return -ERR_IF;
     }
-    
+
 #ifdef SAL_USING_LWIP
     extern int sal_lwip_netdev_set_pf_info(struct netdev *netdev);
     /* set the lwIP network interface device protocol family information */
@@ -332,7 +332,7 @@ static int netdev_add(struct netif *lwip_netif)
 
     rt_strncpy(name, lwip_netif->name, LWIP_NETIF_NAME_LEN);
     result = netdev_register(netdev, name, (void *)lwip_netif);
-	
+
     /* Update netdev info after registered */
     netdev->flags = lwip_netif->flags;
     netdev->mtu = lwip_netif->mtu;
@@ -375,7 +375,7 @@ static int netdev_flags_sync(struct netif *lwip_netif)
     {
         return -ERR_IF;
     }
-    
+
     netdev->mtu = lwip_netif->mtu;
     netdev->flags |= lwip_netif->flags;
 
@@ -438,7 +438,7 @@ static err_t eth_netif_device_init(struct netif *netif)
         /* copy device flags to netif flags */
         netif->flags = (ethif->flags & 0xff);
         netif->mtu = ETHERNET_MTU;
-        
+
         /* set output */
         netif->output       = etharp_output;
 
@@ -530,7 +530,7 @@ rt_err_t eth_device_init_with_flag(struct eth_device *dev, const char *name, rt_
 
     /* set linkoutput */
     netif->linkoutput   = ethernetif_linkoutput;
-        
+
     /* get hardware MAC address */
     rt_device_control(&(dev->parent), NIOCTL_GADDR, netif->hwaddr);
 
@@ -550,7 +550,7 @@ rt_err_t eth_device_init_with_flag(struct eth_device *dev, const char *name, rt_
         ipaddr.addr = inet_addr(RT_LWIP_IPADDR);
         gw.addr = inet_addr(RT_LWIP_GWADDR);
         netmask.addr = inet_addr(RT_LWIP_MSKADDR);
-#else        
+#else
         IP4_ADDR(&ipaddr, 0, 0, 0, 0);
         IP4_ADDR(&gw, 0, 0, 0, 0);
         IP4_ADDR(&netmask, 0, 0, 0, 0);
@@ -702,7 +702,7 @@ static void eth_rx_thread_entry(void* parameter)
             while (1)
             {
                 if(device->eth_rx == RT_NULL) break;
-                
+
                 p = device->eth_rx(&(device->parent));
                 if (p != RT_NULL)
                 {
@@ -725,9 +725,9 @@ static void eth_rx_thread_entry(void* parameter)
 }
 #endif
 
-/* this function does not need, 
- * use eth_system_device_init_private() 
- * call by lwip_system_init(). 
+/* this function does not need,
+ * use eth_system_device_init_private()
+ * call by lwip_system_init().
  */
 int eth_system_device_init(void)
 {
@@ -870,27 +870,27 @@ void list_if(void)
         rt_kprintf("gw address: %s\n", ipaddr_ntoa(&(netif->gw)));
         rt_kprintf("net mask  : %s\n", ipaddr_ntoa(&(netif->netmask)));
 #if LWIP_IPV6
-		{
-			ip6_addr_t *addr;
-			int addr_state;
-			int i;
-			
-			addr = (ip6_addr_t *)&netif->ip6_addr[0];
-			addr_state = netif->ip6_addr_state[0];
-			
-			rt_kprintf("\nipv6 link-local: %s state:%02X %s\n", ip6addr_ntoa(addr), 
-			addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
-			
-			for(i=1; i<LWIP_IPV6_NUM_ADDRESSES; i++)
-			{
-				addr = (ip6_addr_t *)&netif->ip6_addr[i];
-				addr_state = netif->ip6_addr_state[i];
-			
-				rt_kprintf("ipv6[%d] address: %s state:%02X %s\n", i, ip6addr_ntoa(addr), 
-				addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
-			}
-			
-		}
+        {
+            ip6_addr_t *addr;
+            int addr_state;
+            int i;
+
+            addr = (ip6_addr_t *)&netif->ip6_addr[0];
+            addr_state = netif->ip6_addr_state[0];
+
+            rt_kprintf("\nipv6 link-local: %s state:%02X %s\n", ip6addr_ntoa(addr),
+            addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
+
+            for(i=1; i<LWIP_IPV6_NUM_ADDRESSES; i++)
+            {
+                addr = (ip6_addr_t *)&netif->ip6_addr[i];
+                addr_state = netif->ip6_addr_state[i];
+
+                rt_kprintf("ipv6[%d] address: %s state:%02X %s\n", i, ip6addr_ntoa(addr),
+                addr_state, ip6_addr_isvalid(addr_state)?"VALID":"INVALID");
+            }
+
+        }
         rt_kprintf("\r\n");
 #endif /* LWIP_IPV6 */
         netif = netif->next;
diff --git a/components/net/lwip_dhcpd/dhcp_server.c b/components/net/lwip_dhcpd/dhcp_server.c
index 93b4ad16f0..0ebbe89ca4 100644
--- a/components/net/lwip_dhcpd/dhcp_server.c
+++ b/components/net/lwip_dhcpd/dhcp_server.c
@@ -2,7 +2,7 @@
  * File      : dhcp_server.c
  *             A simple DHCP server implementation
  *
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
diff --git a/components/net/lwip_dhcpd/dhcp_server.h b/components/net/lwip_dhcpd/dhcp_server.h
index ea68d6b8ec..3533cb6087 100644
--- a/components/net/lwip_dhcpd/dhcp_server.h
+++ b/components/net/lwip_dhcpd/dhcp_server.h
@@ -2,7 +2,7 @@
  * File      : dhcp_server.h
  *             A simple DHCP server implementation
  *
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
diff --git a/components/net/lwip_dhcpd/dhcp_server_raw.c b/components/net/lwip_dhcpd/dhcp_server_raw.c
index 6c786301be..06a7affc97 100644
--- a/components/net/lwip_dhcpd/dhcp_server_raw.c
+++ b/components/net/lwip_dhcpd/dhcp_server_raw.c
@@ -1,7 +1,7 @@
 /*
  * File      : dhcp_server_raw.c
  *             A simple DHCP server implementation
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
@@ -26,7 +26,7 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
- * 
+ *
  * Change Logs:
  * Date           Author       Notes
  * 2014-04-01     Ren.Haibo    the first version
diff --git a/components/net/netdev/include/arpa/inet.h b/components/net/netdev/include/arpa/inet.h
index 085e15dcbc..9072dffb79 100644
--- a/components/net/netdev/include/arpa/inet.h
+++ b/components/net/netdev/include/arpa/inet.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/netdev/include/netdev.h b/components/net/netdev/include/netdev.h
index e11a8929b0..16da0e502c 100644
--- a/components/net/netdev/include/netdev.h
+++ b/components/net/netdev/include/netdev.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2019, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -79,8 +79,8 @@ struct netdev_ops;
 /* network interface device object */
 struct netdev
 {
-    rt_slist_t list; 
-    
+    rt_slist_t list;
+
     char name[RT_NAME_MAX];                            /* network interface device name */
     ip_addr_t ip_addr;                                 /* IP address */
     ip_addr_t netmask;                                 /* subnet mask */
@@ -91,11 +91,11 @@ struct netdev
     ip_addr_t dns_servers[NETDEV_DNS_SERVERS_NUM];     /* DNS server */
     uint8_t hwaddr_len;                                /* hardware address length */
     uint8_t hwaddr[NETDEV_HWADDR_MAX_LEN];             /* hardware address */
-    
+
     uint16_t flags;                                    /* network interface device status flag */
     uint16_t mtu;                                      /* maximum transfer unit (in bytes) */
     const struct netdev_ops *ops;                      /* network interface device operations */
-    
+
     netdev_callback_fn status_callback;                /* network interface device flags change callback */
     netdev_callback_fn addr_callback;                  /* network interface device address information change callback */
 
diff --git a/components/net/netdev/include/netdev_ipaddr.h b/components/net/netdev/include/netdev_ipaddr.h
index 65970ec5b7..08ea50ed9d 100644
--- a/components/net/netdev/include/netdev_ipaddr.h
+++ b/components/net/netdev/include/netdev_ipaddr.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -23,30 +23,30 @@ extern "C" {
  * On subnets, the decomposition of addresses to host and net parts
  * is done according to subnet mask, not the masks here.
  */
-#define	IN_CLASSA(i)		(((long)(i) & 0x80000000) == 0)
-#define	IN_CLASSA_NET		0xff000000
-#define	IN_CLASSA_NSHIFT	24
-#define	IN_CLASSA_HOST		0x00ffffff
-#define	IN_CLASSA_MAX		128
+#define IN_CLASSA(i)        (((long)(i) & 0x80000000) == 0)
+#define IN_CLASSA_NET       0xff000000
+#define IN_CLASSA_NSHIFT    24
+#define IN_CLASSA_HOST      0x00ffffff
+#define IN_CLASSA_MAX       128
 
-#define	IN_CLASSB(i)		(((long)(i) & 0xc0000000) == 0x80000000)
-#define	IN_CLASSB_NET		0xffff0000
-#define	IN_CLASSB_NSHIFT	16
-#define	IN_CLASSB_HOST		0x0000ffff
-#define	IN_CLASSB_MAX		65536
+#define IN_CLASSB(i)        (((long)(i) & 0xc0000000) == 0x80000000)
+#define IN_CLASSB_NET       0xffff0000
+#define IN_CLASSB_NSHIFT    16
+#define IN_CLASSB_HOST      0x0000ffff
+#define IN_CLASSB_MAX       65536
 
-#define	IN_CLASSC(i)		(((long)(i) & 0xe0000000) == 0xc0000000)
-#define	IN_CLASSC_NET		0xffffff00
-#define	IN_CLASSC_NSHIFT	8
-#define	IN_CLASSC_HOST		0x000000ff
+#define IN_CLASSC(i)        (((long)(i) & 0xe0000000) == 0xc0000000)
+#define IN_CLASSC_NET       0xffffff00
+#define IN_CLASSC_NSHIFT    8
+#define IN_CLASSC_HOST      0x000000ff
 
-#define	IN_CLASSD(i)		(((long)(i) & 0xf0000000) == 0xe0000000)
-#define	IN_MULTICAST(i)		IN_CLASSD(i)
+#define IN_CLASSD(i)        (((long)(i) & 0xf0000000) == 0xe0000000)
+#define IN_MULTICAST(i)     IN_CLASSD(i)
 
-#define	IN_EXPERIMENTAL(i)	(((long)(i) & 0xe0000000) == 0xe0000000)
-#define	IN_BADCLASS(i)		(((long)(i) & 0xf0000000) == 0xf0000000)
+#define IN_EXPERIMENTAL(i)  (((long)(i) & 0xe0000000) == 0xe0000000)
+#define IN_BADCLASS(i)      (((long)(i) & 0xf0000000) == 0xf0000000)
 
-#define	IN_LOOPBACKNET		127			/* official! */
+#define IN_LOOPBACKNET      127         /* official! */
 
 /* IP address types for use in ip_addr_t.type member */
 enum netdev_ip_addr_type {
@@ -307,7 +307,7 @@ const char *netdev_inet_ntop(int af, const void *src, char *dst, int32_t size);
 int netdev_inet_pton(int af, const char *src, void *dst);
 
 #define inet_ntop(af, src, dst, size)       netdev_inet_ntop(af, src, dst, size)
-#define inet_pton(af, src, dst)             netdev_inet_pton(af, src, dst) 
+#define inet_pton(af, src, dst)             netdev_inet_pton(af, src, dst)
 
 #ifdef __cplusplus
 }
diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index 326464866b..ce418757f7 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2019, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/netdev/src/netdev_ipaddr.c b/components/net/netdev/src/netdev_ipaddr.c
index a70a90bb75..9abb41bd14 100644
--- a/components/net/netdev/src/netdev_ipaddr.c
+++ b/components/net/netdev/src/netdev_ipaddr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/dfs_net/dfs_net.c b/components/net/sal_socket/dfs_net/dfs_net.c
index f1a3d777a1..67b652c320 100644
--- a/components/net/sal_socket/dfs_net/dfs_net.c
+++ b/components/net/sal_socket/dfs_net/dfs_net.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -21,7 +21,7 @@
 int dfs_net_getsocket(int fd)
 {
     int socket;
-    struct dfs_fd *_dfs_fd; 
+    struct dfs_fd *_dfs_fd;
 
     _dfs_fd = fd_get(fd);
     if (_dfs_fd == NULL) return -1;
@@ -68,7 +68,7 @@ static int dfs_net_poll(struct dfs_fd *file, struct rt_pollreq *req)
     return sal_poll(file, req);
 }
 
-const struct dfs_file_ops _net_fops = 
+const struct dfs_file_ops _net_fops =
 {
     NULL,    /* open     */
     dfs_net_close,
diff --git a/components/net/sal_socket/impl/af_inet.h b/components/net/sal_socket/impl/af_inet.h
index caffbe1400..421d15bfae 100644
--- a/components/net/sal_socket/impl/af_inet.h
+++ b/components/net/sal_socket/impl/af_inet.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/impl/af_inet_at.c b/components/net/sal_socket/impl/af_inet_at.c
index 135e4183c4..c85dfe9f06 100644
--- a/components/net/sal_socket/impl/af_inet_at.c
+++ b/components/net/sal_socket/impl/af_inet_at.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -85,7 +85,7 @@ static const struct sal_socket_ops at_socket_ops =
 #endif /* SAL_USING_POSIX */
 };
 
-static const struct sal_netdb_ops at_netdb_ops = 
+static const struct sal_netdb_ops at_netdb_ops =
 {
     at_gethostbyname,
     NULL,
diff --git a/components/net/sal_socket/impl/af_inet_lwip.c b/components/net/sal_socket/impl/af_inet_lwip.c
index 56df735ab9..2e19275b5d 100644
--- a/components/net/sal_socket/impl/af_inet_lwip.c
+++ b/components/net/sal_socket/impl/af_inet_lwip.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -229,7 +229,7 @@ int inet_ioctlsocket(int socket, long cmd, void *arg)
     {
     case F_GETFL:
     case F_SETFL:
-        return lwip_fcntl(socket, cmd, (int) arg); 
+        return lwip_fcntl(socket, cmd, (int) arg);
 
     default:
         return lwip_ioctl(socket, cmd, arg);
@@ -320,7 +320,7 @@ static const struct sal_proto_family lwip_inet_family =
     AF_INET6,
 #else
     AF_INET,
-#endif 
+#endif
     &lwip_socket_ops,
     &lwip_netdb_ops,
 };
@@ -329,7 +329,7 @@ static const struct sal_proto_family lwip_inet_family =
 int sal_lwip_netdev_set_pf_info(struct netdev *netdev)
 {
     RT_ASSERT(netdev);
-    
+
     netdev->sal_user_data = (void *) &lwip_inet_family;
     return 0;
 }
diff --git a/components/net/sal_socket/impl/proto_mbedtls.c b/components/net/sal_socket/impl/proto_mbedtls.c
index 3472bbeaf5..79fbdcc5d4 100644
--- a/components/net/sal_socket/impl/proto_mbedtls.c
+++ b/components/net/sal_socket/impl/proto_mbedtls.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -59,7 +59,7 @@ static void *mebdtls_socket(int socket)
     {
         tls_free(session);
         session = RT_NULL;
-        
+
         return RT_NULL;
     }
 
@@ -68,7 +68,7 @@ static void *mebdtls_socket(int socket)
     {
         mbedtls_client_close(session);
         return RT_NULL;
-    }  
+    }
     session->server_fd.fd = socket;
 
     return (void *)session;
@@ -89,7 +89,7 @@ int mbedtls_net_send_cb(void *ctx, const unsigned char *buf, size_t len)
     {
         return -1;
     }
-    
+
     pf = (struct sal_proto_family *)sock->netdev->sal_user_data;
 
     /* Register scoket sendto option to TLS send data callback */
@@ -128,7 +128,7 @@ int mbedtls_net_recv_cb( void *ctx, unsigned char *buf, size_t len)
     }
 
     pf = (struct sal_proto_family *)sock->netdev->sal_user_data;
-    
+
     /* Register scoket recvfrom option to TLS recv data callback */
     ret = pf->skt_ops->recvfrom((int) sock->user_data, (void *)buf, len, 0, RT_NULL, RT_NULL);
     if (ret < 0)
@@ -183,7 +183,7 @@ static int mbedtls_connect(void *sock)
         mbedtls_x509_crt_verify_info((char *)session->buffer, session->buffer_len, "  ! ", ret);
         goto __exit;
     }
-    
+
     return ret;
 
 __exit:
@@ -199,27 +199,27 @@ static int mbedtls_closesocket(void *sock)
 {
     struct sal_socket *ssock;
     int socket;
-    
+
     if (sock == RT_NULL)
     {
         return 0;
     }
-    
+
     socket = ((MbedTLSSession *) sock)->server_fd.fd;
     ssock = sal_get_socket(socket);
     if (ssock == RT_NULL)
     {
         return -1;
     }
-    
+
     /* Close TLS client session, and clean user-data in SAL socket */
     mbedtls_client_close((MbedTLSSession *) sock);
     ssock->user_data_tls = RT_NULL;
-    
+
     return 0;
 }
 
-static const struct sal_proto_tls_ops mbedtls_proto_ops= 
+static const struct sal_proto_tls_ops mbedtls_proto_ops=
 {
     RT_NULL,
     mebdtls_socket,
diff --git a/components/net/sal_socket/include/dfs_net/dfs_net.h b/components/net/sal_socket/include/dfs_net/dfs_net.h
index ad28b8ec2a..82b7526603 100644
--- a/components/net/sal_socket/include/dfs_net/dfs_net.h
+++ b/components/net/sal_socket/include/dfs_net/dfs_net.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h b/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h
index 8899daee96..f174bc6504 100644
--- a/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h
+++ b/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/sal.h b/components/net/sal_socket/include/sal.h
index 6ffaa90356..dd250e37b6 100644
--- a/components/net/sal_socket/include/sal.h
+++ b/components/net/sal_socket/include/sal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/sal_netdb.h b/components/net/sal_socket/include/sal_netdb.h
index d5ce9b1d7e..50064ce343 100644
--- a/components/net/sal_socket/include/sal_netdb.h
+++ b/components/net/sal_socket/include/sal_netdb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/sal_socket.h b/components/net/sal_socket/include/sal_socket.h
index b620bbe23c..497be47e41 100644
--- a/components/net/sal_socket/include/sal_socket.h
+++ b/components/net/sal_socket/include/sal_socket.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -171,7 +171,7 @@ struct sockaddr_in
 #endif /* NETDEV_IPV4 */
 
 #if NETDEV_IPV6
-struct sockaddr_in6 
+struct sockaddr_in6
 {
   uint8_t         sin6_len;      /* length of this structure    */
   sa_family_t     sin6_family;   /* AF_INET6                    */
diff --git a/components/net/sal_socket/include/sal_tls.h b/components/net/sal_socket/include/sal_tls.h
index 7681b313bd..f211a3c1f8 100644
--- a/components/net/sal_socket/include/sal_tls.h
+++ b/components/net/sal_socket/include/sal_tls.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/socket/netdb.h b/components/net/sal_socket/include/socket/netdb.h
index 17f83efe00..4783405022 100644
--- a/components/net/sal_socket/include/socket/netdb.h
+++ b/components/net/sal_socket/include/socket/netdb.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/socket/netinet/in.h b/components/net/sal_socket/include/socket/netinet/in.h
index 57c417d7b6..37240547b4 100644
--- a/components/net/sal_socket/include/socket/netinet/in.h
+++ b/components/net/sal_socket/include/socket/netinet/in.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/socket/netinet/tcp.h b/components/net/sal_socket/include/socket/netinet/tcp.h
index 2ac4d6f40d..a3b530186a 100644
--- a/components/net/sal_socket/include/socket/netinet/tcp.h
+++ b/components/net/sal_socket/include/socket/netinet/tcp.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/socket/netinet/udp.h b/components/net/sal_socket/include/socket/netinet/udp.h
index 485d7d142c..21f50d55e5 100644
--- a/components/net/sal_socket/include/socket/netinet/udp.h
+++ b/components/net/sal_socket/include/socket/netinet/udp.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/include/socket/sys_socket/sys/socket.h b/components/net/sal_socket/include/socket/sys_socket/sys/socket.h
index 04470aa84a..a86240e2ff 100644
--- a/components/net/sal_socket/include/socket/sys_socket/sys/socket.h
+++ b/components/net/sal_socket/include/socket/sys_socket/sys/socket.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/socket/net_netdb.c b/components/net/sal_socket/socket/net_netdb.c
index bc76a48965..03b995c68d 100644
--- a/components/net/sal_socket/socket/net_netdb.c
+++ b/components/net/sal_socket/socket/net_netdb.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/sal_socket/socket/net_sockets.c b/components/net/sal_socket/socket/net_sockets.c
index a53b2f1f9c..3637635d50 100644
--- a/components/net/sal_socket/socket/net_sockets.c
+++ b/components/net/sal_socket/socket/net_sockets.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -95,7 +95,7 @@ int shutdown(int s, int how)
         rt_set_errno(-EBADF);
         return -1;
     }
-    
+
     if (sal_shutdown(socket, how) == 0)
     {
         error = 0;
@@ -105,7 +105,7 @@ int shutdown(int s, int how)
         rt_set_errno(-ENOTSOCK);
         error = -1;
     }
-    
+
     fd_put(d);
 
     return error;
diff --git a/components/net/sal_socket/src/sal_socket.c b/components/net/sal_socket/src/sal_socket.c
index edd5cd9a72..2781088711 100644
--- a/components/net/sal_socket/src/sal_socket.c
+++ b/components/net/sal_socket/src/sal_socket.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
diff --git a/components/net/uip/rt-thread/uip_ethernetif.c b/components/net/uip/rt-thread/uip_ethernetif.c
index fa4e52461e..593fdba2b5 100644
--- a/components/net/uip/rt-thread/uip_ethernetif.c
+++ b/components/net/uip/rt-thread/uip_ethernetif.c
@@ -14,9 +14,9 @@
 
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice,
@@ -25,21 +25,21 @@
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission. 
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
  *
  * This file is part of the lwIP TCP/IP stack.
- * 
+ *
  * Author: Adam Dunkels <[email protected]>
  *
  */
@@ -62,19 +62,19 @@ extern u16_t uip_len, uip_slen;
 static struct rt_mailbox eth_rx_thread_mb;
 static struct rt_thread eth_rx_thread;
 #ifndef RT_LWIP_ETHTHREAD_PRIORITY
-#define RT_ETHERNETIF_THREAD_PREORITY	0x90
+#define RT_ETHERNETIF_THREAD_PREORITY   0x90
 static char eth_rx_thread_mb_pool[48 * 4];
 static char eth_rx_thread_stack[1024];
 #else
-#define RT_ETHERNETIF_THREAD_PREORITY	RT_LWIP_ETHTHREAD_PRIORITY
+#define RT_ETHERNETIF_THREAD_PREORITY   RT_LWIP_ETHTHREAD_PRIORITY
 static char eth_rx_thread_mb_pool[RT_LWIP_ETHTHREAD_MBOX_SIZE * 4];
 static char eth_rx_thread_stack[RT_LWIP_ETHTHREAD_STACKSIZE];
 #endif
 
 struct eth_tx_msg
 {
-	struct netif 	*netif;
-	struct pbuf 	*buf;
+    struct netif    *netif;
+    struct pbuf     *buf;
 };
 static struct rt_mailbox eth_tx_thread_mb;
 static struct rt_thread eth_tx_thread;
@@ -89,225 +89,225 @@ static char eth_tx_thread_stack[RT_LWIP_ETHTHREAD_STACKSIZE];
 /* the interface provided to uIP */
 err_t eth_init(struct netif *netif)
 {
-	return 0;
+    return 0;
 }
 extern err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p);
 
 err_t eth_input(struct pbuf *p,struct netif *inp)
 {
 
-	struct eth_hdr *ethhdr;
+    struct eth_hdr *ethhdr;
 
-	if(p != RT_NULL)
-	{
+    if(p != RT_NULL)
+    {
 #ifdef LINK_STATS
-		//LINK_STATS_INC(link.recv);
-#endif  LINK_STATS 
+        //LINK_STATS_INC(link.recv);
+#endif  LINK_STATS
 
-		ethhdr = p->payload;
+        ethhdr = p->payload;
 
-		switch(uip_htons(ethhdr->type))
-		{
-		case ETHTYPE_IP: //ETHTYPE_IP
-			etharp_ip_input(inp, p);
-			pbuf_header(p, -((rt_int16_t)sizeof(struct eth_hdr)));
-			if (tcpip_input(p, inp) != ERR_OK)
-			{
-				// discard packet 
-				pbuf_free(p);
-			}
-			break;
+        switch(uip_htons(ethhdr->type))
+        {
+        case ETHTYPE_IP: //ETHTYPE_IP
+            etharp_ip_input(inp, p);
+            pbuf_header(p, -((rt_int16_t)sizeof(struct eth_hdr)));
+            if (tcpip_input(p, inp) != ERR_OK)
+            {
+                // discard packet
+                pbuf_free(p);
+            }
+            break;
 
-		case ETHTYPE_ARP:
-			etharp_arp_input(inp, (struct eth_addr *)inp->hwaddr, p);
-			break;
+        case ETHTYPE_ARP:
+            etharp_arp_input(inp, (struct eth_addr *)inp->hwaddr, p);
+            break;
 
-		default:
-			pbuf_free(p);
-			p = RT_NULL;
-			break;
-		}
-	}
+        default:
+            pbuf_free(p);
+            p = RT_NULL;
+            break;
+        }
+    }
     return ERR_OK;
 }
 
 err_t ethernetif_output(struct netif *netif, struct pbuf *p, struct ip_addr *ipaddr)
 {
-	return etharp_output(netif, p, ipaddr);
+    return etharp_output(netif, p, ipaddr);
 }
 
 err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p)
 {
-	struct eth_tx_msg msg;
-	struct eth_device* enetif;
+    struct eth_tx_msg msg;
+    struct eth_device* enetif;
 
-	enetif = (struct eth_device*)netif->state;
+    enetif = (struct eth_device*)netif->state;
 
-	/* send a message to eth tx thread */
-	msg.netif = netif;
-	msg.buf   = p;
-	if (rt_mb_send(&eth_tx_thread_mb, (rt_uint32_t) &msg) == RT_EOK)
-	{
-		/* waiting for ack */
-		rt_sem_take(&(enetif->tx_ack), RT_WAITING_FOREVER);
-	}
+    /* send a message to eth tx thread */
+    msg.netif = netif;
+    msg.buf   = p;
+    if (rt_mb_send(&eth_tx_thread_mb, (rt_uint32_t) &msg) == RT_EOK)
+    {
+        /* waiting for ack */
+        rt_sem_take(&(enetif->tx_ack), RT_WAITING_FOREVER);
+    }
 
-	return ERR_OK;
+    return ERR_OK;
 }
 /* ethernetif APIs */
 rt_err_t eth_device_init(struct eth_device* dev, const char* name)
 {
-	struct netif* netif;
+    struct netif* netif;
         uip_ipaddr_t ipaddr;
-	netif = (struct netif*) rt_malloc (sizeof(struct netif));
-	if (netif == RT_NULL)
-	{
-		rt_kprintf("malloc netif failed\n");
-		return -RT_ERROR;
-	}
-	rt_memset(netif, 0, sizeof(struct netif));
+    netif = (struct netif*) rt_malloc (sizeof(struct netif));
+    if (netif == RT_NULL)
+    {
+        rt_kprintf("malloc netif failed\n");
+        return -RT_ERROR;
+    }
+    rt_memset(netif, 0, sizeof(struct netif));
+
+    /* set netif */
+    dev->netif = netif;
+    /* register to rt-thread device manager */
+    rt_device_register(&(dev->parent), name, RT_DEVICE_FLAG_RDWR);
+    dev->parent.type = RT_Device_Class_NetIf;
+    rt_sem_init(&(dev->tx_ack), name, 0, RT_IPC_FLAG_FIFO);
 
-	/* set netif */
-	dev->netif = netif;
-	/* register to rt-thread device manager */
-	rt_device_register(&(dev->parent), name, RT_DEVICE_FLAG_RDWR);
-	dev->parent.type = RT_Device_Class_NetIf;
-	rt_sem_init(&(dev->tx_ack), name, 0, RT_IPC_FLAG_FIFO);
+    /* set name */
+    netif->name[0] = name[0];
+    netif->name[1] = name[1];
 
-	/* set name */
-	netif->name[0] = name[0];
-	netif->name[1] = name[1];
+    /* set hw address to 6 */
+    netif->hwaddr_len   = 6;
+    /* maximum transfer unit */
+    netif->mtu          = ETHERNET_MTU;
+    /* broadcast capability */
+    netif->flags        = NETIF_FLAG_BROADCAST;
 
-	/* set hw address to 6 */
-	netif->hwaddr_len	= 6;
-	/* maximum transfer unit */
-	netif->mtu			= ETHERNET_MTU;
-	/* broadcast capability */
-	netif->flags		= NETIF_FLAG_BROADCAST;
-	
 #if LWIP_IGMP
-	/* igmp support */
-	netif->flags |= NETIF_FLAG_IGMP;
+    /* igmp support */
+    netif->flags |= NETIF_FLAG_IGMP;
 #endif
 
-	/* get hardware address */
-	rt_device_control(&(dev->parent), NIOCTL_GADDR, netif->hwaddr);
+    /* get hardware address */
+    rt_device_control(&(dev->parent), NIOCTL_GADDR, netif->hwaddr);
 
-	/* set output */
-	netif->output		= ethernetif_output;
-	netif->linkoutput	= ethernetif_linkoutput;
+    /* set output */
+    netif->output       = ethernetif_output;
+    netif->linkoutput   = ethernetif_linkoutput;
 
-	/* add netif to lwip */
-        
-	if (netif_add(netif, IP_ADDR_ANY, IP_ADDR_BROADCAST, IP_ADDR_ANY, dev,
-		eth_init, eth_input) == RT_NULL)
-	{
-		/* failed, unregister device and free netif */
-		rt_device_unregister(&(dev->parent));
-		rt_free(netif);
-		return -RT_ERROR;
-	}
-        
-	netif_set_default(netif);
-	return RT_EOK;
+    /* add netif to lwip */
+
+    if (netif_add(netif, IP_ADDR_ANY, IP_ADDR_BROADCAST, IP_ADDR_ANY, dev,
+        eth_init, eth_input) == RT_NULL)
+    {
+        /* failed, unregister device and free netif */
+        rt_device_unregister(&(dev->parent));
+        rt_free(netif);
+        return -RT_ERROR;
+    }
+
+    netif_set_default(netif);
+    return RT_EOK;
 }
 
 /* ethernet buffer */
 void eth_tx_thread_entry(void* parameter)
 {
-	struct eth_tx_msg* msg;
+    struct eth_tx_msg* msg;
 
-	while (1)
-	{
-		if (rt_mb_recv(&eth_tx_thread_mb, (rt_uint32_t*)&msg, RT_WAITING_FOREVER) == RT_EOK)
- 		{
-			struct eth_device* enetif;
+    while (1)
+    {
+        if (rt_mb_recv(&eth_tx_thread_mb, (rt_uint32_t*)&msg, RT_WAITING_FOREVER) == RT_EOK)
+        {
+            struct eth_device* enetif;
 
-			RT_ASSERT(msg->netif != RT_NULL);
-			RT_ASSERT(msg->buf   != RT_NULL);
+            RT_ASSERT(msg->netif != RT_NULL);
+            RT_ASSERT(msg->buf   != RT_NULL);
 
-			enetif = (struct eth_device*)msg->netif->state;
-			if (enetif != RT_NULL)
-			{
-				/* call driver's interface */
-				if (enetif->eth_tx(&(enetif->parent), msg->buf) != RT_EOK)
-				{
-					rt_kprintf("transmit eth packet failed\n");
-				}
-			}
+            enetif = (struct eth_device*)msg->netif->state;
+            if (enetif != RT_NULL)
+            {
+                /* call driver's interface */
+                if (enetif->eth_tx(&(enetif->parent), msg->buf) != RT_EOK)
+                {
+                    rt_kprintf("transmit eth packet failed\n");
+                }
+            }
 
-			/* send ack */
-			rt_sem_release(&(enetif->tx_ack));
-		}
-	}
+            /* send ack */
+            rt_sem_release(&(enetif->tx_ack));
+        }
+    }
 }
 
 /* ethernet buffer */
 void eth_rx_thread_entry(void* parameter)
 {
-	struct eth_device* device;
+    struct eth_device* device;
 
-	while (1)
-	{
-		if (rt_mb_recv(&eth_rx_thread_mb, (rt_uint32_t*)&device, RT_WAITING_FOREVER) == RT_EOK)
- 		{
-			struct pbuf *p;
+    while (1)
+    {
+        if (rt_mb_recv(&eth_rx_thread_mb, (rt_uint32_t*)&device, RT_WAITING_FOREVER) == RT_EOK)
+        {
+            struct pbuf *p;
 
-			/* receive all of buffer */
-			while (1)
-			{
-				p = device->eth_rx(&(device->parent));
-				if (p != RT_NULL)
-				{
-					/* notify to upper layer */
-					eth_input(p, device->netif);
-				}
-				else break;
-			}
-		}
-	}
+            /* receive all of buffer */
+            while (1)
+            {
+                p = device->eth_rx(&(device->parent));
+                if (p != RT_NULL)
+                {
+                    /* notify to upper layer */
+                    eth_input(p, device->netif);
+                }
+                else break;
+            }
+        }
+    }
 }
 
 rt_err_t eth_device_ready(struct eth_device* dev)
 {
-	/* post message to ethernet thread */
-	return rt_mb_send(&eth_rx_thread_mb, (rt_uint32_t)dev);
+    /* post message to ethernet thread */
+    return rt_mb_send(&eth_rx_thread_mb, (rt_uint32_t)dev);
 }
 
 rt_err_t eth_system_device_init()
 {
-	rt_err_t result = RT_EOK;
+    rt_err_t result = RT_EOK;
+
+    /* init rx thread */
+    /* init mailbox and create ethernet thread */
+    result = rt_mb_init(&eth_rx_thread_mb, "erxmb",
+        &eth_rx_thread_mb_pool[0], sizeof(eth_rx_thread_mb_pool)/4,
+        RT_IPC_FLAG_FIFO);
+    RT_ASSERT(result == RT_EOK);
 
-	/* init rx thread */
-	/* init mailbox and create ethernet thread */
-	result = rt_mb_init(&eth_rx_thread_mb, "erxmb",
-		&eth_rx_thread_mb_pool[0], sizeof(eth_rx_thread_mb_pool)/4,
-		RT_IPC_FLAG_FIFO);
-	RT_ASSERT(result == RT_EOK);
+    result = rt_thread_init(&eth_rx_thread, "erx", eth_rx_thread_entry, RT_NULL,
+        &eth_rx_thread_stack[0], sizeof(eth_rx_thread_stack),
+        RT_ETHERNETIF_THREAD_PREORITY, 16);
+    RT_ASSERT(result == RT_EOK);
 
-	result = rt_thread_init(&eth_rx_thread, "erx", eth_rx_thread_entry, RT_NULL,
-		&eth_rx_thread_stack[0], sizeof(eth_rx_thread_stack),
-		RT_ETHERNETIF_THREAD_PREORITY, 16);
-	RT_ASSERT(result == RT_EOK);
+    result = rt_thread_startup(&eth_rx_thread);
+    RT_ASSERT(result == RT_EOK);
 
-	result = rt_thread_startup(&eth_rx_thread);
-	RT_ASSERT(result == RT_EOK);
+    /* init tx thread */
+    /* init mailbox and create ethernet thread */
 
-	/* init tx thread */
-	/* init mailbox and create ethernet thread */
-        
-	result = rt_mb_init(&eth_tx_thread_mb, "etxmb",
-		&eth_tx_thread_mb_pool[0], sizeof(eth_tx_thread_mb_pool)/4,
-		RT_IPC_FLAG_FIFO);
-	RT_ASSERT(result == RT_EOK);
+    result = rt_mb_init(&eth_tx_thread_mb, "etxmb",
+        &eth_tx_thread_mb_pool[0], sizeof(eth_tx_thread_mb_pool)/4,
+        RT_IPC_FLAG_FIFO);
+    RT_ASSERT(result == RT_EOK);
 
-	result = rt_thread_init(&eth_tx_thread, "etx", eth_tx_thread_entry, RT_NULL,
-		&eth_tx_thread_stack[0], sizeof(eth_tx_thread_stack),
-		RT_ETHERNETIF_THREAD_PREORITY, 16);
-	RT_ASSERT(result == RT_EOK);
+    result = rt_thread_init(&eth_tx_thread, "etx", eth_tx_thread_entry, RT_NULL,
+        &eth_tx_thread_stack[0], sizeof(eth_tx_thread_stack),
+        RT_ETHERNETIF_THREAD_PREORITY, 16);
+    RT_ASSERT(result == RT_EOK);
 
-	result = rt_thread_startup(&eth_tx_thread);
-	RT_ASSERT(result == RT_EOK);
+    result = rt_thread_startup(&eth_tx_thread);
+    RT_ASSERT(result == RT_EOK);
 
-	return result;
+    return result;
 }