add rudimentary protocol handling

1 files changed, 29 insertions, 0 deletions

diff --git a/proto.h b/proto.h
new file mode 100644
index 0000000..92cef01
--- /dev/null
+++ b/proto.h
@@ -0,0 +1,29 @@
+#ifndef __NETIFD_PROTO_H
+#define __NETIFD_PROTO_H
+
+struct interface_proto_state;
+
+enum interface_proto_event {
+	IFPEV_UP,
+	IFPEV_DOWN,
+};
+
+enum interface_proto_cmd {
+	PROTO_CMD_SETUP,
+	PROTO_CMD_TEARDOWN,
+};
+
+struct interface_proto_state {
+	struct interface *iface;
+
+	/* filled in by the protocol user */
+	void (*proto_event)(struct interface_proto_state *, enum interface_proto_event ev);
+
+	/* filled in by the protocol handler */
+	int (*handler)(struct interface_proto_state *, enum interface_proto_cmd cmd, bool force);
+	void (*free)(struct interface_proto_state *);
+};
+
+struct interface_proto_state *get_default_proto(void);
+
+#endif