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/* $OpenBSD: lde.h,v 1.15 2010/06/30 22:15:02 claudio 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>
RB_HEAD(fec_tree, fec);
struct fec {
RB_ENTRY(fec) entry;
struct in_addr prefix;
u_int8_t prefixlen;
};
/*
* fec tree of pending label request
* Note: currently only one outstanding request per FEC can be tracked but
* should not be a problem since ldpd does not support multipath for now.
*/
struct lde_req {
struct fec fec;
u_int32_t msgid;
};
/* mapping entries */
struct lde_map {
struct fec fec;
LIST_ENTRY(lde_map) entry;
struct lde_nbr *nexthop;
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 {
RB_ENTRY(lde_nbr) entry;
struct in_addr id;
struct fec_tree recv_req;
struct fec_tree sent_req;
struct fec_tree recv_map;
struct fec_tree sent_map;
struct fec_tree sent_wdraw;
TAILQ_HEAD(, lde_nbr_address) addr_list;
u_int32_t peerid;
unsigned int ifindex;
int state;
u_int16_t lspace;
};
struct rt_lsp {
LIST_ENTRY(rt_lsp) entry;
struct in_addr nexthop;
u_int32_t remote_label;
};
struct rt_node {
struct fec fec;
LIST_HEAD(, rt_lsp) lsp; /* label switching pathes */
LIST_HEAD(, lde_map) downstream; /* recv mappings */
LIST_HEAD(, lde_map) upstream; /* sent mappings */
u_int32_t local_label;
u_int16_t lspace;
u_int8_t flags;
};
/* 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_assign_label(void);
void lde_send_change_klabel(struct rt_node *, struct rt_lsp *);
void lde_send_delete_klabel(struct rt_node *, struct rt_lsp *);
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, u_int32_t,
u_int32_t);
void lde_nbr_del(struct lde_nbr *);
void lde_nbr_do_mappings(struct rt_node *);
struct lde_map *lde_map_add(struct lde_nbr *, struct rt_node *, int);
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 fec_init(struct fec_tree *);
int fec_insert(struct fec_tree *, struct fec *);
int fec_remove(struct fec_tree *, struct fec *);
struct fec *fec_find_prefix(struct fec_tree *, in_addr_t, u_int8_t);
struct fec *fec_find(struct fec_tree *, struct fec *);
void fec_clear(struct fec_tree *, void (*)(void *));
void rt_dump(pid_t);
void rt_snap(u_int32_t);
void rt_clear(void);
void lde_kernel_insert(struct kroute *);
void lde_kernel_remove(struct kroute *);
void lde_check_mapping(struct map *, struct lde_nbr *);
void lde_check_request(struct map *, struct lde_nbr *);
void lde_check_release(struct map *, struct lde_nbr *);
void lde_label_list_free(struct lde_nbr *);
#endif /* _LDE_H_ */
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