[fix] iperf speed test have been stable.

components/net/lwip-1.4.1/src/include/netif/ethernetif.h

@@ -27,6 +27,7 @@ struct eth_device
     rt_uint16_t flags;
     rt_uint8_t  link_changed;
     rt_uint8_t  link_status;
+    rt_uint8_t  rx_notice;      /* avoid send the same mail to mailbox */
 
     /* eth device interface */
     struct pbuf* (*eth_rx)(rt_device_t dev);

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

@@ -550,10 +550,16 @@ rt_err_t eth_device_init(struct eth_device * dev, const char *name)
 rt_err_t eth_device_ready(struct eth_device* dev)
 {
     if (dev->netif)
+    {
+        if(dev->rx_notice == RT_FALSE)
+        {
+            dev->rx_notice = RT_TRUE;
+            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);
-    else
-        return ERR_OK; /* netif is not initialized yet, just return. */
+    }
+
+    return ERR_OK; /* netif is not initialized yet, just return. */
 }
 
 rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
@@ -646,9 +652,10 @@ static void eth_rx_thread_entry(void* parameter)
                 else
                     netifapi_netif_set_link_down(device->netif);
             }
+            device->rx_notice = RT_FALSE;
 
             /* receive all of buffer */
-            do
+            while(1)
             {
             	if(device->eth_rx == RT_NULL) break;
 
@@ -664,7 +671,7 @@ 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/include/netif/ethernetif.h

@@ -27,6 +27,7 @@ struct eth_device
     rt_uint16_t flags;
     rt_uint8_t  link_changed;
     rt_uint8_t  link_status;
+    rt_uint8_t  rx_notice;      /* avoid send the same mail to mailbox */
 
     /* eth device interface */
     struct pbuf* (*eth_rx)(rt_device_t dev);

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

@@ -599,10 +599,16 @@ void eth_device_deinit(struct eth_device *dev)
 rt_err_t eth_device_ready(struct eth_device* dev)
 {
     if (dev->netif)
+    {
+        if(dev->rx_notice == RT_FALSE)
+        {
+            dev->rx_notice = RT_TRUE;
+            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_ubase_t)dev);
-    else
-        return ERR_OK; /* netif is not initialized yet, just return. */
+    }
+
+    return ERR_OK; /* netif is not initialized yet, just return. */
 }
 
 rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
@@ -695,9 +701,10 @@ static void eth_rx_thread_entry(void* parameter)
                 else
                     netifapi_netif_set_link_down(device->netif);
             }
+            device->rx_notice = RT_FALSE;
 
             /* receive all of buffer */
-            do
+            while(1)
             {
                 if(device->eth_rx == RT_NULL) break;
 
@@ -713,7 +720,7 @@ 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/include/netif/ethernetif.h

@@ -27,6 +27,7 @@ struct eth_device
     rt_uint16_t flags;
     rt_uint8_t  link_changed;
     rt_uint8_t  link_status;
+    rt_uint8_t  rx_notice;      /* avoid send the same mail to mailbox */
 
     /* eth device interface */
     struct pbuf* (*eth_rx)(rt_device_t dev);

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

@@ -601,10 +601,16 @@ void eth_device_deinit(struct eth_device *dev)
 rt_err_t eth_device_ready(struct eth_device* dev)
 {
     if (dev->netif)
+    {
+        if(dev->rx_notice == RT_FALSE)
+        {
+            dev->rx_notice = RT_TRUE;
+            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);
-    else
-        return ERR_OK; /* netif is not initialized yet, just return. */
+    }
+
+    return ERR_OK; /* netif is not initialized yet, just return. */
 }
 
 rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
@@ -697,9 +703,10 @@ static void eth_rx_thread_entry(void* parameter)
                 else
                     netifapi_netif_set_link_down(device->netif);
             }
+            device->rx_notice = RT_FALSE;
 
             /* receive all of buffer */
-            do
+            while(1)
             {
                 if(device->eth_rx == RT_NULL) break;
 
@@ -715,7 +722,7 @@ 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
         {