From 68095474915c95f9271151e2e8eece48bee05200 Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Thu, 15 Oct 2015 23:10:59 +0800
Subject: [PATCH] [lwIP] Add ETHIF_LINK_AUTOUP/PHYUP flag to ethernet interface

---
 components/net/lwip-1.4.1/src/arch/sys_arch.c      |  7 ++++---
 .../net/lwip-1.4.1/src/include/netif/ethernetif.h  | 10 +++++++---
 components/net/lwip-1.4.1/src/netif/ethernetif.c   | 14 ++++++++------
 3 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/components/net/lwip-1.4.1/src/arch/sys_arch.c b/components/net/lwip-1.4.1/src/arch/sys_arch.c
index d3a69f9ac3..c0aed9d4f0 100644
--- a/components/net/lwip-1.4.1/src/arch/sys_arch.c
+++ b/components/net/lwip-1.4.1/src/arch/sys_arch.c
@@ -115,9 +115,10 @@ static void tcpip_init_done_callback(void *arg)
                 netif_set_up(ethif->netif);
             }
 
-#if LWIP_NETIF_LINK_CALLBACK
-            netif_set_link_up(ethif->netif);
-#endif
+            if (!(ethif->flags & ETHIF_LINK_PHYUP))
+            {
+                netif_set_link_up(ethif->netif);
+            }
 
             /* enter critical */
             rt_enter_critical();
diff --git a/components/net/lwip-1.4.1/src/include/netif/ethernetif.h b/components/net/lwip-1.4.1/src/include/netif/ethernetif.h
index 2019df7017..bdad32ec20 100644
--- a/components/net/lwip-1.4.1/src/include/netif/ethernetif.h
+++ b/components/net/lwip-1.4.1/src/include/netif/ethernetif.h
@@ -11,6 +11,10 @@
 #define ETHERNET_MTU		RT_LWIP_ETH_MTU
 #endif
 
+/* eth flag with auto_linkup or phy_linkup */
+#define ETHIF_LINK_AUTOUP	0x0000
+#define ETHIF_LINK_PHYUP	0x0100
+
 struct eth_device
 {
 	/* inherit from rt_device */
@@ -20,9 +24,9 @@ struct eth_device
 	struct netif *netif;
 	struct rt_semaphore tx_ack;
 
-	rt_uint8_t  flags;
+	rt_uint16_t flags;
 	rt_uint8_t  link_changed;
-	rt_uint16_t link_status;
+	rt_uint8_t  link_status;
 
 	/* eth device interface */
 	struct pbuf* (*eth_rx)(rt_device_t dev);
@@ -31,7 +35,7 @@ struct eth_device
 
 rt_err_t eth_device_ready(struct eth_device* dev);
 rt_err_t eth_device_init(struct eth_device * dev, char *name);
-rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint8_t flag);
+rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint16_t flag);
 rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up);
 
 int eth_system_device_init(void);
diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip-1.4.1/src/netif/ethernetif.c
index 2e0ef2f8bd..f0b2f814dc 100644
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@@ -154,7 +154,7 @@ static err_t eth_netif_device_init(struct netif *netif)
         }
 
         /* copy device flags to netif flags */
-        netif->flags = ethif->flags;
+        netif->flags = (ethif->flags & 0xff);
 
         /* set default netif */
         if (netif_default == RT_NULL)
@@ -173,9 +173,11 @@ static err_t eth_netif_device_init(struct netif *netif)
             netif_set_up(ethif->netif);
         }
 
-#ifdef LWIP_NETIF_LINK_CALLBACK
-        netif_set_link_up(ethif->netif);
-#endif
+        if (!(ethif->flags & ETHIF_LINK_PHYUP))
+        {
+            /* set link_up for this netif */
+            netif_set_link_up(ethif->netif);
+        }
 
         return ERR_OK;
     }
@@ -184,7 +186,7 @@ static err_t eth_netif_device_init(struct netif *netif)
 }
 
 /* Keep old drivers compatible in RT-Thread */
-rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint8_t flags)
+rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint16_t flags)
 {
     struct netif* netif;
 
@@ -246,7 +248,7 @@ rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint8_
 
 rt_err_t eth_device_init(struct eth_device * dev, char *name)
 {
-    rt_uint8_t flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
+    rt_uint16_t flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
 
 #if LWIP_DHCP
     /* DHCP support */
-- 
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