ofproto-dpif-sflow: allow sFlow to infer the agent device.

[sliver-openvswitch.git] / lib / netdev.c

diff --git a/lib/netdev.c b/lib/netdev.c
index 9f15b72..eff6e4c 100644 (file)
--- a/lib/netdev.c
+++ b/lib/netdev.c
@@ -692,6 +692,26 @@ netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask)
             : EOPNOTSUPP);
 }
 
+/* Obtains ad IPv4 address from device name and save the address in
+ * in4.  Returns 0 if successful, otherwise a positive errno value.
+ */
+int
+netdev_get_in4_by_name(const char *device_name, struct in_addr *in4)
+{
+    struct netdev *netdev;
+    int error;
+
+    error = netdev_open(device_name, "system", &netdev);
+    if (error) {
+        in4->s_addr = htonl(0);
+        return error;
+    }
+
+    error = netdev_get_in4(netdev, in4, NULL);
+    netdev_close(netdev);
+    return error;
+}
+
 /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds
  * to 'netdev'. */
 int
@@ -1250,24 +1270,6 @@ netdev_change_seq(const struct netdev *netdev)
 {
     return netdev_get_dev(netdev)->netdev_class->change_seq(netdev);
 }
-
-/* If 'netdev' is a VLAN network device (e.g. one created with vconfig(8)),
- * sets '*vlan_vid' to the VLAN VID associated with that device and returns 0.
- * Otherwise returns a errno value (specifically ENOENT if 'netdev_name' is the
- * name of a network device that is not a VLAN device) and sets '*vlan_vid' to
- * -1. */
-int
-netdev_get_vlan_vid(const struct netdev *netdev, int *vlan_vid)
-{
-    int error = (netdev_get_dev(netdev)->netdev_class->get_vlan_vid
-                 ? netdev_get_dev(netdev)->netdev_class->get_vlan_vid(netdev,
-                        vlan_vid)
-                 : ENOENT);
-    if (error) {
-        *vlan_vid = 0;
-    }
-    return error;
-}
 \f
 /* Initializes 'netdev_dev' as a netdev device named 'name' of the specified
  * 'netdev_class'.  This function is ordinarily called from a netdev provider's