Welcome ldpd, the Label Distribution Protocol daemon.

Built using the imsg/three process framework, its main aim
is to redistribute MPLS labels between peers.

Right now it has some really basic functionalities,
the basic protocol works and peers are able to exchange
labels and insert them in the kernel.
It still does not react to changes of topology.

Not yet connected to the builds.

ok claudio@ deraadt@

1 files changed, 127 insertions, 0 deletions

diff --git a/usr.sbin/ldpd/lde.h b/usr.sbin/ldpd/lde.h
new file mode 100644
index 00000000000..7ba1b09a3ca
--- /dev/null
+++ b/usr.sbin/ldpd/lde.h
@@ -0,0 +1,127 @@
+/*	$OpenBSD: lde.h,v 1.1 2009/06/01 20:59:45 michele Exp $ */
+
+/*
+ * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LDE_H_
+#define _LDE_H_
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/tree.h>
+#include <sys/queue.h>
+#include <event.h>
+#include <limits.h>
+
+/* Label mapping request pending */
+struct lde_req_entry {
+	TAILQ_ENTRY(lde_req_entry)	entry;
+	struct in_addr			prefix;
+	u_int8_t			prefixlen;
+};
+
+/* Label mapping message sent */
+struct lde_map_entry {
+	TAILQ_ENTRY(lde_map_entry)	entry;
+	struct in_addr			prefix;
+	u_int8_t			prefixlen;
+	u_int32_t			label;
+};
+
+/* Addresses belonging to neighbor */
+struct lde_nbr_address {
+	TAILQ_ENTRY(lde_nbr_address)	entry;
+	struct in_addr			addr;
+};
+
+/* just the info LDE needs */
+struct lde_nbr {
+	LIST_ENTRY(lde_nbr)		 hash, entry;
+	struct in_addr			 id;
+
+	TAILQ_HEAD(, lde_req_entry)	 req_list;
+	TAILQ_HEAD(, lde_map_entry)	 recv_map_list;
+	TAILQ_HEAD(, lde_map_entry)	 sent_map_list;
+	TAILQ_HEAD(, lde_nbr_address)	 addr_list;
+
+	u_int32_t			 peerid;
+	unsigned int			 ifindex;
+	int				 self;
+	int				 state;
+
+	u_int16_t			 lspace;
+};
+
+struct rt_label {
+	TAILQ_ENTRY(rt_label)	 entry;
+	u_int32_t		 label;
+	struct lde_nbr		*nexthop;
+};
+
+struct rt_node {
+	RB_ENTRY(rt_node)	entry;
+	TAILQ_HEAD(, rt_label)	labels_list;
+	struct in_addr		prefix;
+	struct in_addr		nexthop;
+
+	u_int32_t		local_label;
+	u_int32_t		remote_label;
+
+	u_int32_t		ext_tag;
+	u_int16_t		lspace;
+	u_int8_t		flags;
+	u_int8_t		prefixlen;
+	u_int8_t		invalid;
+};
+
+/* lde.c */
+pid_t		 lde(struct ldpd_conf *, int [2], int [2], int [2]);
+int		 lde_imsg_compose_ldpe(int, u_int32_t, pid_t, void *,
+		     u_int16_t);
+u_int32_t	 lde_router_id(void);
+void		 lde_send_insert_klabel(struct rt_node *);
+void		 lde_send_change_klabel(struct rt_node *);
+void		 lde_send_delete_klabel(struct rt_node *);
+void		 lde_send_labelmapping(u_int32_t, struct map *);
+void		 lde_send_labelrequest(u_int32_t, struct map *);
+void		 lde_send_labelrelease(u_int32_t, struct map *);
+void		 lde_send_notification(u_int32_t, u_int32_t);
+
+void		 lde_nbr_del(struct lde_nbr *);
+struct lde_nbr *lde_find_address(struct in_addr);
+
+
+int			 lde_address_add(struct lde_nbr *, struct in_addr *);
+struct lde_nbr_address	*lde_address_find(struct lde_nbr *, struct in_addr *);
+int			 lde_address_del(struct lde_nbr *, struct in_addr *);
+
+/* lde_lib.c */
+void		 rt_init(void);
+int		 rt_compare(struct rt_node *, struct rt_node *);
+int		 rt_insert(struct rt_node *);
+int		 rt_remove(struct rt_node *);
+struct rt_node	*rt_find(in_addr_t, u_int8_t);
+void		 rt_clear(void);
+void		 route_reset_timers(struct rt_node *);
+int		 route_start_timeout(struct rt_node *);
+void		 route_start_garbage(struct rt_node *);
+void		 rt_dump(pid_t);
+void		 rt_snap(u_int32_t);
+void		 lde_insert(struct kroute *);
+void		 lde_check_mapping(struct map *, struct lde_nbr *);
+void		 lde_check_request(struct map *, struct lde_nbr *);
+
+#endif	/* _LDE_H_ */