Add functions to determine how port should be opened based on type.

Depending on the port and type of datapath, a port may need to be opened
as a different type of device than it's configured.  For example, an
"internal" port on a "dummy" datapath should opened as a "dummy" port.
This commit adds the ability for a dpif to provide this information to a
caller.  It will be used in a future commit.

Signed-off-by: Justin Pettit <jpettit@nicira.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/dpif.h b/lib/dpif.h
index 7d0881fa..893338b2 100644
--- a/lib/dpif.h
+++ b/lib/dpif.h
@@ -73,6 +73,8 @@ int dpif_get_dp_stats(const struct dpif *, struct dpif_dp_stats *);
 
 /* Port operations. */
 
+const char *dpif_port_open_type(const char *datapath_type,
+                                const char *port_type);
 int dpif_port_add(struct dpif *, struct netdev *, uint32_t *port_nop);
 int dpif_port_del(struct dpif *, uint32_t port_no);