diff --git a/components/net/lwip-1.4.1/src/apps/ping/ping.c b/components/net/lwip-1.4.1/src/apps/ping/ping.c
index 1075e2ddfd25108ffa217682db972ecaa9762066..6d3cfe0fc39ffaef9b612735f7a770149813170e 100644
--- a/components/net/lwip-1.4.1/src/apps/ping/ping.c
+++ b/components/net/lwip-1.4.1/src/apps/ping/ping.c
@@ -130,7 +130,7 @@ int lwip_ping_recv(int s, int *ttl)
     return len;
 }
 
-#ifndef RT_USING_SAL
+#ifndef RT_USING_NETDEV
 
 /* using the lwIP custom ping */
 rt_err_t ping(char* target_name, rt_uint32_t times, rt_size_t size)
@@ -239,7 +239,7 @@ int cmd_ping(int argc, char **argv)
 FINSH_FUNCTION_EXPORT_ALIAS(cmd_ping, __cmd_ping, ping network host);
 #endif /* RT_USING_FINSH */
 
-#endif /* RT_USING_SAL */
+#endif /* RT_USING_NETDEV */
 
 #endif /* RT_LWIP_ICMP */
 
diff --git a/components/net/lwip-2.0.2/src/apps/ping/ping.c b/components/net/lwip-2.0.2/src/apps/ping/ping.c
index 1075e2ddfd25108ffa217682db972ecaa9762066..6d3cfe0fc39ffaef9b612735f7a770149813170e 100644
--- a/components/net/lwip-2.0.2/src/apps/ping/ping.c
+++ b/components/net/lwip-2.0.2/src/apps/ping/ping.c
@@ -130,7 +130,7 @@ int lwip_ping_recv(int s, int *ttl)
     return len;
 }
 
-#ifndef RT_USING_SAL
+#ifndef RT_USING_NETDEV
 
 /* using the lwIP custom ping */
 rt_err_t ping(char* target_name, rt_uint32_t times, rt_size_t size)
@@ -239,7 +239,7 @@ int cmd_ping(int argc, char **argv)
 FINSH_FUNCTION_EXPORT_ALIAS(cmd_ping, __cmd_ping, ping network host);
 #endif /* RT_USING_FINSH */
 
-#endif /* RT_USING_SAL */
+#endif /* RT_USING_NETDEV */
 
 #endif /* RT_LWIP_ICMP */
 
diff --git a/components/net/lwip-2.1.0/src/apps/ping/ping.c b/components/net/lwip-2.1.0/src/apps/ping/ping.c
index 1075e2ddfd25108ffa217682db972ecaa9762066..6d3cfe0fc39ffaef9b612735f7a770149813170e 100644
--- a/components/net/lwip-2.1.0/src/apps/ping/ping.c
+++ b/components/net/lwip-2.1.0/src/apps/ping/ping.c
@@ -130,7 +130,7 @@ int lwip_ping_recv(int s, int *ttl)
     return len;
 }
 
-#ifndef RT_USING_SAL
+#ifndef RT_USING_NETDEV
 
 /* using the lwIP custom ping */
 rt_err_t ping(char* target_name, rt_uint32_t times, rt_size_t size)
@@ -239,7 +239,7 @@ int cmd_ping(int argc, char **argv)
 FINSH_FUNCTION_EXPORT_ALIAS(cmd_ping, __cmd_ping, ping network host);
 #endif /* RT_USING_FINSH */
 
-#endif /* RT_USING_SAL */
+#endif /* RT_USING_NETDEV */
 
 #endif /* RT_LWIP_ICMP */
 
diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index c5b4d0e321778e5278a6a10f40af47148638730f..e4a88ca0223e1aa0e98b165f5045247ca0144105 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -269,8 +269,7 @@ struct netdev *netdev_get_by_family(int family)
     {
         netdev = rt_slist_entry(node, struct netdev, list);
         pf = (struct sal_proto_family *) netdev->sal_user_data;
-        if (pf && pf->skt_ops && pf->family == family &&
-                netdev_is_up(netdev) && netdev_is_link_up(netdev))
+        if (pf && pf->skt_ops && pf->family == family && netdev_is_up(netdev))
         {
             rt_hw_interrupt_enable(level);
             return netdev;
@@ -281,8 +280,7 @@ struct netdev *netdev_get_by_family(int family)
     {
         netdev = rt_slist_entry(node, struct netdev, list);
         pf = (struct sal_proto_family *) netdev->sal_user_data;
-        if (pf && pf->skt_ops && pf->sec_family == family &&
-                netdev_is_up(netdev) && netdev_is_link_up(netdev))
+        if (pf && pf->skt_ops && pf->sec_family == family && netdev_is_up(netdev))
         {
             rt_hw_interrupt_enable(level);
             return netdev;
diff --git a/components/net/sal_socket/src/sal_socket.c b/components/net/sal_socket/src/sal_socket.c
index f4d5549aad9c0f11cd7f1379e425a2485cd735c7..68e1375849ca7d844946d8c8010210845324a34e 100644
--- a/components/net/sal_socket/src/sal_socket.c
+++ b/components/net/sal_socket/src/sal_socket.c
@@ -370,7 +370,7 @@ static int socket_init(int family, int type, int protocol, struct sal_socket **r
     struct sal_proto_family *pf;
     struct netdev *netdv_def = netdev_default;
     struct netdev *netdev = RT_NULL;
-    rt_bool_t falgs = RT_FALSE;
+    rt_bool_t flag = RT_FALSE;
 
     if (family < 0 || family > AF_MAX)
     {
@@ -388,26 +388,24 @@ static int socket_init(int family, int type, int protocol, struct sal_socket **r
     sock->protocol = protocol;
 
     /* get socket operations from network interface device */
-    if (netdv_def)
-    {
-        if (netdev_is_up(netdv_def) && netdev_is_link_up(netdv_def))
-        {
-            /* check default network interface device protocol family */
-            pf = (struct sal_proto_family *) netdv_def->sal_user_data;
-            if (pf != RT_NULL && pf->skt_ops && (pf->family == family || pf->sec_family == family))
-            {
-                sock->netdev = netdv_def;
-                falgs = RT_TRUE;
-            }
-        }
-    }
-    else
+    if (netdv_def == RT_NULL)
     {
         LOG_E("not find default network interface device for socket create.");
         return -3;
     }
+
+    if (netdev_is_up(netdv_def))
+    {
+        /* check default network interface device protocol family */
+        pf = (struct sal_proto_family *) netdv_def->sal_user_data;
+        if (pf != RT_NULL && pf->skt_ops && (pf->family == family || pf->sec_family == family))
+        {
+            sock->netdev = netdv_def;
+            flag = RT_TRUE;
+        }
+    }
     
-    if (falgs == RT_FALSE)
+    if (flag == RT_FALSE)
     {
         /* get network interface device by protocol family */
         netdev = netdev_get_by_family(family);
@@ -516,8 +514,6 @@ int sal_accept(int socket, struct sockaddr *addr, socklen_t *addrlen)
     /* get the socket object by socket descriptor */
     SAL_SOCKET_OBJ_GET(sock, socket);
 
-    /* check the network interface is commonicable  */
-    SAL_NETDEV_IS_COMMONICABLE(sock->netdev);
     /* check the network interface socket operations */
     SAL_NETDEV_SOCKETOPS_VALID(sock->netdev, pf, accept);