lib: call vrf update hook when default vrf name changes

this is a call done whenever vrf name changes. This is useful on remote
daemons.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

lib/vrf.c

@@ -199,9 +199,14 @@ struct vrf *vrf_get(vrf_id_t vrf_id, const char *name)
 
 	/* Set name */
 	if (name && vrf->name[0] != '\0' && strcmp(name, vrf->name)) {
+		/* update the vrf name */
 		RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf);
+		strlcpy(vrf->data.l.netns_name,
+			name, NS_NAMSIZ);
 		strlcpy(vrf->name, name, sizeof(vrf->name));
 		RB_INSERT(vrf_name_head, &vrfs_by_name, vrf);
+		if (vrf->vrf_id == VRF_DEFAULT)
+			vrf_set_default_name(vrf->name, false);
 	} else if (name && vrf->name[0] == '\0') {
 		strlcpy(vrf->name, name, sizeof(vrf->name));
 		RB_INSERT(vrf_name_head, &vrfs_by_name, vrf);
@@ -870,7 +875,8 @@ void vrf_set_default_name(const char *default_name, bool force)
 			   def_vrf->vrf_id);
 		return;
 	}
-
+	if (strmatch(vrf_default_name, default_name))
+		return;
 	snprintf(vrf_default_name, VRF_NAMSIZ, "%s", default_name);
 	if (def_vrf) {
 		if (force)