X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fdpif.c;h=9feb67ba92ec8f01612f07aac535fe6461e57336;hb=020c93874e22c1c7492c30fe76a8e496571ede13;hp=d8ca0617329cbed91393b2ad1411b7bbbaf76765;hpb=9b56fe137d3c734edcfa00631a960920f04c866a;p=openvswitch

diff --git a/lib/dpif.c b/lib/dpif.c
index d8ca0617..9feb67ba 100644
--- 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
@@ -410,6 +417,23 @@ dpif_get_dp_stats(const struct dpif *dpif, struct dpif_dp_stats *stats)
     return error;
 }
 
+const char *
+dpif_port_open_type(const char *datapath_type, const char *port_type)
+{
+    struct registered_dpif_class *registered_class;
+
+    datapath_type = dpif_normalize_type(datapath_type);
+
+    registered_class = shash_find_data(&dpif_classes, datapath_type);
+    if (!registered_class
+            || !registered_class->dpif_class->port_open_type) {
+        return port_type;
+    }
+
+    return registered_class->dpif_class->port_open_type(
+                          registered_class->dpif_class, port_type);
+}
+
 /* Attempts to add 'netdev' as a port on 'dpif'.  If 'port_nop' is
  * non-null and its value is not UINT32_MAX, then attempts to use the
  * value as the port number.
@@ -486,6 +510,20 @@ 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 != ENOENT && 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.