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/* $OpenBSD: lde.h,v 1.33 2016/05/23 18:36:55 renato 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);
enum fec_type {
FEC_TYPE_IPV4,
FEC_TYPE_PWID
};
struct fec {
RB_ENTRY(fec) entry;
enum fec_type type;
union {
struct {
struct in_addr prefix;
uint8_t prefixlen;
} ipv4;
struct {
uint16_t type;
uint32_t pwid;
struct in_addr lsr_id;
} pwid;
} u;
};
RB_PROTOTYPE(fec_tree, fec, entry, fec_compare)
extern struct fec_tree ft;
/* request entries */
struct lde_req {
struct fec fec;
uint32_t msgid;
};
/* mapping entries */
struct lde_map {
struct fec fec;
LIST_ENTRY(lde_map) entry;
struct lde_nbr *nexthop;
struct map map;
};
/* withdraw entries */
struct lde_wdraw {
struct fec fec;
uint32_t label;
};
/* Addresses belonging to neighbor */
struct lde_addr {
TAILQ_ENTRY(lde_addr) 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_addr) addr_list;
uint32_t peerid;
};
struct fec_nh {
LIST_ENTRY(fec_nh) entry;
struct in_addr nexthop;
uint32_t remote_label;
};
struct fec_node {
struct fec fec;
LIST_HEAD(, fec_nh) nexthops; /* fib nexthops */
LIST_HEAD(, lde_map) downstream; /* recv mappings */
LIST_HEAD(, lde_map) upstream; /* sent mappings */
uint32_t local_label;
void *data; /* fec specific data */
};
/* lde.c */
pid_t lde(struct ldpd_conf *, int [2], int [2], int [2]);
int lde_imsg_compose_parent(int, pid_t, void *, uint16_t);
int lde_imsg_compose_ldpe(int, uint32_t, pid_t, void *, uint16_t);
uint32_t lde_assign_label(void);
void lde_fec2map(struct fec *, struct map *);
void lde_map2fec(struct map *, struct in_addr, struct fec *);
void lde_send_change_klabel(struct fec_node *, struct fec_nh *);
void lde_send_delete_klabel(struct fec_node *, struct fec_nh *);
void lde_send_labelmapping(struct lde_nbr *, struct fec_node *, int);
void lde_send_labelwithdraw(struct lde_nbr *, struct fec_node *, uint32_t);
void lde_send_labelwithdraw_all(struct fec_node *, uint32_t);
void lde_send_labelrelease(struct lde_nbr *, struct fec_node *, uint32_t);
void lde_send_notification(uint32_t, uint32_t, uint32_t, uint16_t);
struct lde_nbr *lde_nbr_find_by_lsrid(struct in_addr);
struct lde_nbr *lde_nbr_find_by_addr(struct in_addr);
struct lde_map *lde_map_add(struct lde_nbr *, struct fec_node *, int);
void lde_map_del(struct lde_nbr *, struct lde_map *, int);
struct lde_req *lde_req_add(struct lde_nbr *, struct fec *, int);
void lde_req_del(struct lde_nbr *, struct lde_req *, int);
struct lde_wdraw *lde_wdraw_add(struct lde_nbr *, struct fec_node *);
void lde_wdraw_del(struct lde_nbr *, struct lde_wdraw *);
void lde_change_egress_label(int);
int lde_address_add(struct lde_nbr *, struct in_addr *);
struct lde_addr *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(struct fec_tree *, struct fec *);
void fec_clear(struct fec_tree *, void (*)(void *));
void rt_dump(pid_t);
void fec_snap(struct lde_nbr *);
void fec_tree_clear(void);
struct fec_nh *fec_nh_find(struct fec_node *, struct in_addr);
uint32_t egress_label(enum fec_type);
void lde_kernel_insert(struct fec *, struct in_addr, int, void *);
void lde_kernel_remove(struct fec *, struct in_addr);
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_check_release_wcard(struct map *, struct lde_nbr *);
void lde_check_withdraw(struct map *, struct lde_nbr *);
void lde_check_withdraw_wcard(struct map *, struct lde_nbr *);
void lde_label_list_free(struct lde_nbr *);
/* l2vpn.c */
struct l2vpn *l2vpn_new(const char *);
struct l2vpn *l2vpn_find(struct ldpd_conf *, const char *);
void l2vpn_del(struct l2vpn *);
void l2vpn_init(struct l2vpn *);
struct l2vpn_if *l2vpn_if_new(struct l2vpn *, struct kif *);
struct l2vpn_if *l2vpn_if_find(struct l2vpn *, unsigned int);
struct l2vpn_pw *l2vpn_pw_new(struct l2vpn *, struct kif *);
struct l2vpn_pw *l2vpn_pw_find(struct l2vpn *, unsigned int);
void l2vpn_pw_init(struct l2vpn_pw *);
void l2vpn_pw_exit(struct l2vpn_pw *);
void l2vpn_pw_fec(struct l2vpn_pw *, struct fec *);
void l2vpn_pw_reset(struct l2vpn_pw *);
int l2vpn_pw_ok(struct l2vpn_pw *, struct fec_nh *);
int l2vpn_pw_negotiate(struct lde_nbr *, struct fec_node *,
struct map *);
void l2vpn_send_pw_status(uint32_t, uint32_t, struct fec *);
void l2vpn_recv_pw_status(struct lde_nbr *, struct notify_msg *);
void l2vpn_sync_pws(struct in_addr);
void l2vpn_pw_ctl(pid_t);
void l2vpn_binding_ctl(pid_t);
#endif /* _LDE_H_ */
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