From 86f1d4f19b5bbf6cb4cbd31f5e28137bd11e23ab Mon Sep 17 00:00:00 2001
From: "www220@tom.com" <www220@tom.com>
Date: Wed, 4 Nov 2015 09:37:38 +0800
Subject: [PATCH] =?UTF-8?q?msh=E4=B8=AD=E5=A2=9E=E5=8A=A0=E4=BA=86dns?=
 =?UTF-8?q?=E7=9A=84=E9=85=8D=E7=BD=AE=E5=87=BD=E6=95=B0?=
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---
 components/finsh/msh_cmd.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/components/finsh/msh_cmd.c b/components/finsh/msh_cmd.c
index a4b865b028..99ca82f55d 100644
--- a/components/finsh/msh_cmd.c
+++ b/components/finsh/msh_cmd.c
@@ -282,6 +282,37 @@ int cmd_ifconfig(int argc, char **argv)
 }
 FINSH_FUNCTION_EXPORT_ALIAS(cmd_ifconfig, __cmd_ifconfig, list the information of network interfaces);
 
+#ifdef RT_LWIP_DNS
+#include <lwip/api.h>
+#include <lwip/dns.h>
+int cmd_dns(int argc, char **argv)
+{
+    extern void set_dns(char* dns_server);
+
+    if (argc == 1)
+    {
+        int index;
+        struct ip_addr ip_addr;
+        for(index=0; index<DNS_MAX_SERVERS; index++)
+        {
+            ip_addr = dns_getserver(index);
+            rt_kprintf("dns server #%d: %s\n", index, ipaddr_ntoa(&(ip_addr)));
+        }
+    }
+    else if (argc == 2)
+    {
+        rt_kprintf("dns : %s\n", argv[1]);
+        set_dns(argv[1]);
+    }
+    else
+    {
+        rt_kprintf("bad parameter! e.g: dns 114.114.114.114\n");
+    }
+    return 0;
+}
+FINSH_FUNCTION_EXPORT_ALIAS(cmd_dns, __cmd_dns, list the information of dns);
+#endif
+
 #ifdef RT_LWIP_TCP
 int cmd_netstat(int argc, char **argv)
 {