bfd: Implement Bidirectional Forwarding Detection.

[sliver-openvswitch.git] / lib / bfd.h

diff --git a/lib/bfd.h b/lib/bfd.h
new file mode 100644 (file)
index 0000000..21203b3
--- /dev/null
+++ b/lib/bfd.h
@@ -0,0 +1,46 @@
+/* Copyright (c) 2012 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.  */
+
+#ifndef BFD_H
+#define BFD_H 1
+
+#define BFD_PACKET_LEN 24
+#define BFD_DEST_PORT 3784
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+struct bfd;
+struct flow;
+struct ofpbuf;
+struct smap;
+
+void bfd_wait(const struct bfd *);
+void bfd_run(struct bfd *);
+
+bool bfd_should_send_packet(const struct bfd *);
+void bfd_put_packet(struct bfd *bfd, struct ofpbuf *packet,
+                    uint8_t eth_src[6]);
+
+bool bfd_should_process_flow(const struct flow *);
+void bfd_process_packet(struct bfd *, const struct flow *,
+                        const struct ofpbuf *);
+
+struct bfd *bfd_configure(struct bfd *, const char *name,
+                          const struct smap *smap);
+
+bool bfd_forwarding(const struct bfd *);
+void bfd_get_status(const struct bfd *, struct smap *);
+
+#endif /* bfd.h */