From 04296e97b6d83f979e1c0c9dab4911de73badce5 Mon Sep 17 00:00:00 2001
From: guozhanxin <guozhanxin@rt-thread.com>
Date: Wed, 3 Jul 2019 22:30:14 +0800
Subject: [netdev] Add a non-null judgment to the netstat command.|为 netstat
 命令添加非空判断。
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---
 components/net/netdev/src/netdev.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'components')

diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index bbaae26077..b8b0504dd5 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -1159,7 +1159,14 @@ static void netdev_cmd_netstat(void)
         }
     }
 
-    netdev->ops->netstat(netdev);
+    if (netdev->ops->netstat != RT_NULL)
+    {
+        netdev->ops->netstat(netdev);
+    }
+    else
+    {
+        rt_kprintf("netstat: this command is not supported!\n");
+    }
 }
 
 int netdev_netstat(int argc, char **argv)
-- 
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