[fix] the overflow problem of lwip rx thread mailbox.

components/net/lwip-1.4.1/src/netif/ethernetif.c

@@ -648,7 +648,7 @@ static void eth_rx_thread_entry(void* parameter)
             }
 
             /* receive all of buffer */
-            while (1)
+            do
             {
             	if(device->eth_rx == RT_NULL) break;
 
@@ -664,7 +664,7 @@ static void eth_rx_thread_entry(void* parameter)
                     }
                 }
                 else break;
-            }
+            }while(rt_mb_recv(&eth_rx_thread_mb, (rt_ubase_t *)&device, RT_WAITING_NO) == RT_EOK);
         }
         else
         {

components/net/lwip-2.0.2/src/netif/ethernetif.c

@@ -697,7 +697,7 @@ static void eth_rx_thread_entry(void* parameter)
             }
 
             /* receive all of buffer */
-            while (1)
+            do
             {
                 if(device->eth_rx == RT_NULL) break;
 
@@ -713,7 +713,7 @@ static void eth_rx_thread_entry(void* parameter)
                     }
                 }
                 else break;
-            }
+            }while(rt_mb_recv(&eth_rx_thread_mb, (rt_ubase_t *)&device, RT_WAITING_NO) == RT_EOK);
         }
         else
         {

components/net/lwip-2.1.2/src/netif/ethernetif.c

@@ -699,7 +699,7 @@ static void eth_rx_thread_entry(void* parameter)
             }
 
             /* receive all of buffer */
-            while (1)
+            do
             {
                 if(device->eth_rx == RT_NULL) break;
 
@@ -715,7 +715,7 @@ static void eth_rx_thread_entry(void* parameter)
                     }
                 }
                 else break;
-            }
+            }while(rt_mb_recv(&eth_rx_thread_mb, (rt_ubase_t *)&device, RT_WAITING_NO) == RT_EOK);
         }
         else
         {