1 files changed, 69 insertions, 0 deletions
diff --git a/src/ipcpd/unicast/routing/graph.h b/src/ipcpd/unicast/routing/graph.h
new file mode 100644
index 00000000..632cc5a0
--- /dev/null
+++ b/src/ipcpd/unicast/routing/graph.h
@@ -0,0 +1,69 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Undirected graph structure
+ *
+ *    Dimitri Staessens <dimitri@ouroboros.rocks>
+ *    Sander Vrijders   <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IPCPD_UNICAST_GRAPH_H
+#define OUROBOROS_IPCPD_UNICAST_GRAPH_H
+
+#include <ouroboros/list.h>
+#include <ouroboros/qos.h>
+
+#include <inttypes.h>
+
+enum routing_algo {
+         ROUTING_SIMPLE = 0,
+         ROUTING_LFA,
+         ROUTING_ECMP
+};
+
+struct nhop {
+        struct list_head next;
+        uint64_t         nhop;
+};
+
+struct routing_table {
+        struct list_head next;
+        uint64_t         dst;
+        struct list_head nhops;
+};
+
+struct graph * graph_create(void);
+
+void           graph_destroy(struct graph * graph);
+
+int            graph_update_edge(struct graph * graph,
+                                 uint64_t       s_addr,
+                                 uint64_t       d_addr,
+                                 qosspec_t      qs);
+
+int            graph_del_edge(struct graph * graph,
+                              uint64_t       s_addr,
+                              uint64_t       d_addr);
+
+int            graph_routing_table(struct graph *     graph,
+                                   enum routing_algo  algo,
+                                   uint64_t           s_addr,
+                                   struct list_head * table);
+
+void           graph_free_routing_table(struct graph *     graph,
+                                        struct list_head * table);
+
+#endif /* OUROBOROS_IPCPD_UNICAST_GRAPH_H */