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/* $OpenBSD: ospfe.h,v 1.49 2024/05/18 11:17:30 jsg 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 _OSPFE_H_
#define _OSPFE_H_
#define max(x,y) ((x) > (y) ? (x) : (y))
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
struct lsa_entry {
TAILQ_ENTRY(lsa_entry) entry;
union {
struct lsa_hdr *lu_lsa;
struct lsa_ref *lu_ref;
} le_data;
unsigned short le_when;
unsigned short le_oneshot;
};
#define le_lsa le_data.lu_lsa
#define le_ref le_data.lu_ref
struct lsa_ref {
LIST_ENTRY(lsa_ref) entry;
struct lsa_hdr hdr;
void *data;
time_t stamp;
int refcnt;
u_int16_t len;
};
struct nbr_stats {
u_int32_t sta_chng;
};
struct nbr {
LIST_ENTRY(nbr) entry, hash;
struct event inactivity_timer;
struct event db_tx_timer;
struct event lsreq_tx_timer;
struct event ls_retrans_timer;
struct event adj_timer;
struct nbr_stats stats;
struct lsa_head ls_retrans_list;
struct lsa_head db_sum_list;
struct lsa_head ls_req_list;
struct in_addr addr;
struct in_addr id;
struct in_addr dr; /* designated router */
struct in_addr bdr; /* backup designated router */
struct iface *iface;
struct lsa_entry *ls_req;
struct lsa_entry *dd_end;
u_int32_t dd_seq_num;
u_int32_t dd_pending;
u_int32_t peerid; /* unique ID in DB */
u_int32_t ls_req_cnt;
u_int32_t ls_ret_cnt;
u_int32_t crypt_seq_num;
time_t uptime;
int state;
u_int8_t priority;
u_int8_t options;
u_int8_t capa_options;
u_int8_t last_rx_options;
u_int8_t last_rx_bits;
u_int8_t dd_master;
u_int8_t dd_more;
u_int8_t dd_snapshot; /* snapshot running */
};
struct ctl_conn;
/* auth.c */
int auth_validate(void *buf, u_int16_t len, struct iface *,
struct nbr *);
int auth_gen(struct ibuf *, struct iface *);
void md_list_add(struct auth_md_head *, u_int8_t, char *);
void md_list_copy(struct auth_md_head *, struct auth_md_head *);
void md_list_clr(struct auth_md_head *);
int md_list_send(struct auth_md_head *, struct imsgev *);
/* database.c */
int send_db_description(struct nbr *);
void recv_db_description(struct nbr *, char *, u_int16_t);
void db_sum_list_add(struct nbr *, struct lsa_hdr *);
void db_sum_list_clr(struct nbr *);
void db_tx_timer(int, short, void *);
void start_db_tx_timer(struct nbr *);
void stop_db_tx_timer(struct nbr *);
/* hello.c */
int send_hello(struct iface *);
void recv_hello(struct iface *, struct in_addr, u_int32_t,
char *, u_int16_t);
/* ospfe.c */
pid_t ospfe(struct ospfd_conf *, int[2], int[2], int[2]);
void ospfe_dispatch_main(int, short, void *);
void ospfe_dispatch_rde(int, short, void *);
int ospfe_imsg_compose_parent(int, pid_t, void *, u_int16_t);
int ospfe_imsg_compose_rde(int, u_int32_t, pid_t, void *,
u_int16_t);
u_int32_t ospfe_router_id(void);
void ospfe_fib_update(int);
void ospfe_iface_ctl(struct ctl_conn *, unsigned int);
void ospfe_nbr_ctl(struct ctl_conn *);
void orig_rtr_lsa(struct area *);
void orig_net_lsa(struct iface *);
void ospfe_demote_area(struct area *, int);
void ospfe_demote_iface(struct iface *, int);
/* interface.c */
int if_fsm(struct iface *, enum iface_event);
struct iface *if_new(struct kif *, struct kif_addr *);
void if_del(struct iface *);
void if_init(struct ospfd_conf *, struct iface *);
int if_act_start(struct iface *);
int if_act_elect(struct iface *);
int if_act_reset(struct iface *);
struct ctl_iface *if_to_ctl(struct iface *);
int if_join_group(struct iface *, struct in_addr *);
int if_leave_group(struct iface *, struct in_addr *);
int if_set_mcast(struct iface *);
int if_set_recvif(int, int);
void if_set_sockbuf(int);
int if_set_mcast_loop(int);
int if_set_ip_hdrincl(int);
/* lsack.c */
int send_direct_ack(struct iface *, struct in_addr, void *, size_t);
void recv_ls_ack(struct nbr *, char *, u_int16_t);
int lsa_hdr_check(struct nbr *, struct lsa_hdr *);
void ls_ack_list_add(struct iface *, struct lsa_hdr *);
void ls_ack_list_free(struct iface *, struct lsa_entry *);
void ls_ack_list_clr(struct iface *);
int ls_ack_list_empty(struct iface *);
void ls_ack_tx_timer(int, short, void *);
void start_ls_ack_tx_timer(struct iface *);
void stop_ls_ack_tx_timer(struct iface *);
/* lsreq.c */
int send_ls_req(struct nbr *);
void recv_ls_req(struct nbr *, char *, u_int16_t);
void ls_req_list_add(struct nbr *, struct lsa_hdr *);
struct lsa_entry *ls_req_list_get(struct nbr *, struct lsa_hdr *);
void ls_req_list_free(struct nbr *, struct lsa_entry *);
void ls_req_list_clr(struct nbr *);
int ls_req_list_empty(struct nbr *);
void ls_req_tx_timer(int, short, void *);
void start_ls_req_tx_timer(struct nbr *);
void stop_ls_req_tx_timer(struct nbr *);
/* lsupdate.c */
int lsa_flood(struct iface *, struct nbr *, struct lsa_hdr *,
void *);
void recv_ls_update(struct nbr *, char *, u_int16_t);
void ls_retrans_list_add(struct nbr *, struct lsa_hdr *,
unsigned short, unsigned short);
int ls_retrans_list_del(struct nbr *, struct lsa_hdr *);
struct lsa_entry *ls_retrans_list_get(struct nbr *, struct lsa_hdr *);
void ls_retrans_list_free(struct nbr *, struct lsa_entry *);
void ls_retrans_list_clr(struct nbr *);
void ls_retrans_timer(int, short, void *);
void lsa_cache_init(u_int32_t);
struct lsa_ref *lsa_cache_add(void *, u_int16_t);
struct lsa_ref *lsa_cache_get(struct lsa_hdr *);
void lsa_cache_put(struct lsa_ref *, struct nbr *);
/* neighbor.c */
void nbr_init(u_int32_t);
struct nbr *nbr_new(u_int32_t, struct iface *, int);
void nbr_del(struct nbr *);
struct nbr *nbr_find_id(struct iface *, u_int32_t);
struct nbr *nbr_find_peerid(u_int32_t);
int nbr_fsm(struct nbr *, enum nbr_event);
void nbr_itimer(int, short, void *);
void nbr_start_itimer(struct nbr *);
void nbr_stop_itimer(struct nbr *);
void nbr_reset_itimer(struct nbr *);
void nbr_adj_timer(int, short, void *);
void nbr_start_adj_timer(struct nbr *);
int nbr_act_reset_itimer(struct nbr *);
int nbr_act_start_itimer(struct nbr *);
int nbr_act_eval(struct nbr *);
int nbr_act_snapshot(struct nbr *);
int nbr_act_exchange_done(struct nbr *);
int nbr_act_adj_ok(struct nbr *);
int nbr_act_restart_dd(struct nbr *);
int nbr_act_delete(struct nbr *);
int nbr_act_clear_lists(struct nbr *);
int nbr_act_hello_check(struct nbr *);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
struct lsa_hdr *lsa_hdr_new(void);
/* packet.c */
int gen_ospf_hdr(struct ibuf *, struct iface *, u_int8_t);
int send_packet(struct iface *, struct ibuf *, struct sockaddr_in *);
void recv_packet(int, short, void *);
#endif /* _OSPFE_H_ */
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