From 1f9a668607be01db25695bdfa34f90905de3e4c3 Mon Sep 17 00:00:00 2001
From: chenyong <1521761801@qq.com>
Date: Tue, 28 May 2019 11:03:36 +0800
Subject: [net][at] Fix socket create failed issue when default netdev
 mismatch.

Signed-off-by: chenyong <1521761801@qq.com>
---
 components/net/netdev/include/netdev.h |  1 +
 components/net/netdev/src/netdev.c     | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

(limited to 'components/net/netdev')

diff --git a/components/net/netdev/include/netdev.h b/components/net/netdev/include/netdev.h
index e9d8e38658..0be2a2bda3 100644
--- a/components/net/netdev/include/netdev.h
+++ b/components/net/netdev/include/netdev.h
@@ -138,6 +138,7 @@ struct netdev *netdev_get_by_ipaddr(ip_addr_t *ip_addr);
 struct netdev *netdev_get_by_name(const char *name);
 #ifdef RT_USING_SAL
 struct netdev *netdev_get_by_family(int family);
+int netdev_family_get(struct netdev *netdev);
 #endif /* RT_USING_SAL */
 
 /* Set default network interface device in list */
diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index 71b1ec7ccd..5f49a46f17 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -294,6 +294,20 @@ struct netdev *netdev_get_by_family(int family)
     return RT_NULL;
 }
 
+/**
+ * This function will get the family type from network interface device
+ * 
+ * @param netdev network interface device object
+ * 
+ * @return the network interface device family type
+ */
+int netdev_family_get(struct netdev *netdev)
+{
+    RT_ASSERT(netdev); 
+    
+    return ((struct sal_proto_family *)netdev->sal_user_data)->family;
+}
+
 #endif /* RT_USING_SAL */
 
 /**
-- 
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