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/* $OpenBSD: rde.h,v 1.25 2020/02/17 08:12:22 denis 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 _RDE_H_
#define _RDE_H_
#include <sys/types.h>
#include <sys/time.h>
#include <sys/tree.h>
#include <sys/queue.h>
#include <event.h>
#include <limits.h>
struct v_nexthop {
TAILQ_ENTRY(v_nexthop) entry;
struct vertex *prev;
struct in6_addr nexthop;
unsigned int ifindex;
};
TAILQ_HEAD(v_nexthead, v_nexthop);
struct vertex {
RB_ENTRY(vertex) entry;
TAILQ_ENTRY(vertex) cand;
struct v_nexthead nexthop;
struct event ev;
struct area *area;
struct lsa *lsa;
struct lsa_tree *lsa_tree;
time_t changed;
time_t stamp;
u_int32_t cost;
u_int32_t peerid; /* neighbor unique imsg ID */
u_int32_t ls_id;
u_int32_t adv_rtr;
u_int16_t type;
u_int8_t flooded;
u_int8_t deleted;
u_int8_t self;
};
struct rde_req_entry {
TAILQ_ENTRY(rde_req_entry) entry;
u_int32_t ls_id;
u_int32_t adv_rtr;
u_int8_t type;
};
/* just the info RDE needs */
struct rde_nbr {
LIST_ENTRY(rde_nbr) entry, hash;
struct in6_addr addr;
struct in_addr id;
struct in_addr area_id;
TAILQ_HEAD(, rde_req_entry) req_list;
struct area *area;
struct iface *iface;
u_int32_t peerid; /* unique ID in DB */
unsigned int ifindex;
u_int32_t iface_id; /* id of neighbor's
iface */
int state;
int self;
};
/* expanded and host-byte-order version of a lsa_prefix */
struct rt_prefix {
struct in6_addr prefix;
u_int16_t metric;
u_int8_t prefixlen;
u_int8_t options;
};
struct rt_nexthop {
TAILQ_ENTRY(rt_nexthop) entry;
struct in6_addr nexthop;
struct in_addr adv_rtr;
unsigned int ifindex;
time_t uptime;
u_int8_t connected;
u_int8_t invalid;
};
struct rt_node {
RB_ENTRY(rt_node) entry;
TAILQ_HEAD(,rt_nexthop) nexthop;
struct in6_addr prefix;
struct in_addr area;
u_int32_t cost;
u_int32_t cost2;
u_int32_t ext_tag;
enum path_type p_type;
enum dst_type d_type;
u_int8_t flags;
u_int8_t prefixlen;
u_int8_t invalid;
};
struct abr_rtr {
struct in6_addr addr;
struct in_addr abr_id;
struct in6_addr dst_ip;
struct in_addr area;
u_int16_t metric;
};
extern struct lsa_tree asext_tree;
/* rde.c */
pid_t rde(struct ospfd_conf *, int [2], int [2], int [2]);
int rde_imsg_compose_ospfe(int, u_int32_t, pid_t, void *,
u_int16_t);
u_int32_t rde_router_id(void);
void rde_send_change_kroute(struct rt_node *);
void rde_send_delete_kroute(struct rt_node *);
void rde_nbr_del(struct rde_nbr *);
int rde_nbr_loading(struct area *);
struct rde_nbr *rde_nbr_self(struct area *);
struct rde_nbr *rde_nbr_find(u_int32_t);
void rde_summary_update(struct rt_node *, struct area *);
void orig_intra_area_prefix_lsas(struct area *);
/* rde_lsdb.c */
void lsa_init(struct lsa_tree *);
int lsa_compare(struct vertex *, struct vertex *);
void vertex_free(struct vertex *);
void vertex_nexthop_clear(struct vertex *);
void vertex_nexthop_add(struct vertex *, struct vertex *,
const struct in6_addr *, u_int32_t);
int lsa_newer(struct lsa_hdr *, struct lsa_hdr *);
int lsa_check(struct rde_nbr *, struct lsa *, u_int16_t);
int lsa_self(struct rde_nbr *, struct lsa *, struct vertex *);
int lsa_add(struct rde_nbr *, struct lsa *);
void lsa_del(struct rde_nbr *, struct lsa_hdr *);
void lsa_age(struct vertex *);
struct vertex *lsa_find(struct iface *, u_int16_t, u_int32_t, u_int32_t);
struct vertex *lsa_find_rtr(struct area *, u_int32_t);
struct vertex *lsa_find_rtr_frag(struct area *, u_int32_t, unsigned int);
struct vertex *lsa_find_tree(struct lsa_tree *, u_int16_t, u_int32_t,
u_int32_t);
u_int32_t lsa_find_lsid(struct lsa_tree *,
int (*)(struct lsa *, struct lsa *), struct lsa *);
u_int16_t lsa_num_links(struct vertex *);
void lsa_snap(struct rde_nbr *);
void lsa_dump(struct lsa_tree *, int, pid_t);
void lsa_merge(struct rde_nbr *, struct lsa *, struct vertex *);
void lsa_remove_invalid_sums(struct area *);
/* rde_spf.c */
void spf_calc(struct area *);
void rt_calc(struct vertex *, struct area *, struct ospfd_conf *);
void asext_calc(struct vertex *);
void spf_tree_clr(struct area *);
void cand_list_init(void);
void cand_list_add(struct vertex *);
struct vertex *cand_list_pop(void);
int cand_list_present(struct vertex *);
void cand_list_clr(void);
void spf_timer(int, short, void *);
void start_spf_timer(void);
void stop_spf_timer(struct ospfd_conf *);
void start_spf_holdtimer(struct ospfd_conf *);
void rt_init(void);
int rt_compare(struct rt_node *, struct rt_node *);
struct rt_node *rt_find(struct in6_addr *, u_int8_t, enum dst_type);
int rt_insert(struct rt_node *);
int rt_remove(struct rt_node *);
void rt_clear(void);
void rt_dump(struct in_addr, pid_t, u_int8_t);
struct lsa_rtr_link *get_rtr_link(struct vertex *, unsigned int);
struct lsa_net_link *get_net_link(struct vertex *, unsigned int);
RB_PROTOTYPE(lsa_tree, vertex, entry, lsa_compare)
#endif /* _RDE_H_ */
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