ofp-util: Add version bitmap support to hello messages.

[openvswitch] / lib / dpif.c

diff --git a/lib/dpif.c b/lib/dpif.c
index d8ca0617329cbed91393b2ad1411b7bbbaf76765..0093f6142479e8d58b97e4977282af05bcaba30f 100644 (file)
--- a/lib/dpif.c
+++ b/lib/dpif.c
@@ -372,6 +372,13 @@ dpif_base_name(const struct dpif *dpif)
     return dpif->base_name;
 }
 
+/* Returns the type of datapath 'dpif'. */
+const char *
+dpif_type(const struct dpif *dpif)
+{
+    return dpif->dpif_class->type;
+}
+
 /* Returns the fully spelled out name for the given datapath 'type'.
  *
  * Normalized type string can be compared with strcmp().  Unnormalized type
@@ -486,6 +493,20 @@ dpif_port_destroy(struct dpif_port *dpif_port)
     free(dpif_port->type);
 }
 
+/* Checks if port named 'devname' exists in 'dpif'.  If so, returns
+ * true; otherwise, returns false. */
+bool
+dpif_port_exists(const struct dpif *dpif, const char *devname)
+{
+    int error = dpif->dpif_class->port_query_by_name(dpif, devname, NULL);
+    if (error != 0 && error != ENODEV) {
+        VLOG_WARN_RL(&error_rl, "%s: failed to query port %s: %s",
+                     dpif_name(dpif), devname, strerror(error));
+    }
+
+    return !error;
+}
+
 /* Looks up port number 'port_no' in 'dpif'.  On success, returns 0 and
  * initializes '*port' appropriately; on failure, returns a positive errno
  * value.