mpls: Allow l3 and l4 actions to prior to a push_mpls action

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

diff --git a/lib/netdev.h b/lib/netdev.h
index a544131..13105ee 100644 (file)
--- a/lib/netdev.h
+++ b/lib/netdev.h
@@ -26,11 +26,12 @@
 extern "C" {
 #endif
 
-/* Generic interface to network devices.
+/* Generic interface to network devices ("netdev"s).
  *
- * Currently, there is a single implementation of this interface that supports
- * Linux.  The interface should be generic enough to be implementable on other
- * operating systems as well. */
+ * Every port on a switch must have a corresponding netdev that must minimally
+ * support a few operations, such as the ability to read the netdev's MTU.
+ * The PORTING file at the top of the source tree has more information in the
+ * "Writing a netdev Provider" section. */
 
 struct ofpbuf;
 struct in_addr;
@@ -127,6 +128,7 @@ const struct netdev_tunnel_config *
 /* Basic properties. */
 const char *netdev_get_name(const struct netdev *);
 const char *netdev_get_type(const struct netdev *);
+const char *netdev_get_type_from_name(const char *);
 int netdev_get_mtu(const struct netdev *, int *mtup);
 int netdev_set_mtu(const struct netdev *, int mtu);
 int netdev_get_ifindex(const struct netdev *);