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/* $OpenBSD: ldpe.h,v 1.31 2013/10/17 17:52:21 renato Exp $ */
/*
* Copyright (c) 2004, 2005, 2008 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 _LDPE_H_
#define _LDPE_H_
#define min(x,y) ((x) <= (y) ? (x) : (y))
#define max(x,y) ((x) > (y) ? (x) : (y))
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
TAILQ_HEAD(ctl_conns, ctl_conn) ctl_conns;
struct hello_source {
enum hello_type type;
struct {
struct iface *iface;
struct in_addr src_addr;
} link;
struct tnbr *target;
};
struct adj {
LIST_ENTRY(adj) nbr_entry;
LIST_ENTRY(adj) iface_entry;
struct nbr *nbr;
struct hello_source source;
struct event inactivity_timer;
u_int16_t holdtime;
struct in_addr addr;
};
struct nbr;
struct tcp_conn {
struct nbr *nbr;
int fd;
struct ibuf_read *rbuf;
struct evbuf wbuf;
struct event rev;
};
struct nbr {
RB_ENTRY(nbr) id_tree, pid_tree;
struct tcp_conn *tcp;
LIST_HEAD(, adj) adj_list; /* adjacencies */
struct event ev_connect;
struct event keepalive_timer;
struct event keepalive_timeout;
struct event initdelay_timer;
struct mapping_head mapping_list;
struct mapping_head withdraw_list;
struct mapping_head request_list;
struct mapping_head release_list;
struct mapping_head abortreq_list;
struct in_addr addr;
struct in_addr id;
time_t uptime;
u_int32_t peerid; /* unique ID in DB */
int fd;
int state;
int idtimer_cnt;
u_int16_t keepalive;
};
struct mapping_entry {
TAILQ_ENTRY(mapping_entry) entry;
struct map map;
};
/* accept.c */
void accept_init(void);
int accept_add(int, void (*)(int, short, void *), void *);
void accept_del(int);
void accept_pause(void);
void accept_unpause(void);
/* hello.c */
int send_hello(enum hello_type, struct iface *, struct tnbr *);
void recv_hello(struct iface *, struct in_addr, char *, u_int16_t);
/* init.c */
void send_init(struct nbr *);
int recv_init(struct nbr *, char *, u_int16_t);
/* keepalive.c */
void send_keepalive(struct nbr *);
int recv_keepalive(struct nbr *, char *, u_int16_t);
/* notification.c */
void send_notification_nbr(struct nbr *, u_int32_t, u_int32_t, u_int32_t);
void send_notification(u_int32_t, struct tcp_conn *, u_int32_t,
u_int32_t);
int recv_notification(struct nbr *, char *, u_int16_t);
/* address.c */
void send_address(struct nbr *, struct if_addr *);
int recv_address(struct nbr *, char *, u_int16_t);
void send_address_withdraw(struct nbr *, struct if_addr *);
/* labelmapping.c */
#define PREFIX_SIZE(x) (((x) + 7) / 8)
void send_labelmessage(struct nbr *, u_int16_t, struct mapping_head *);
int recv_labelmessage(struct nbr *, char *, u_int16_t, u_int16_t);
/* ldpe.c */
pid_t ldpe(struct ldpd_conf *, int[2], int[2], int[2]);
void ldpe_dispatch_main(int, short, void *);
void ldpe_dispatch_lde(int, short, void *);
int ldpe_imsg_compose_parent(int, pid_t, void *, u_int16_t);
int ldpe_imsg_compose_lde(int, u_int32_t, pid_t, void *,
u_int16_t);
u_int32_t ldpe_router_id(void);
void ldpe_fib_update(int);
void ldpe_iface_ctl(struct ctl_conn *, unsigned int);
/* interface.c */
int if_fsm(struct iface *, enum iface_event);
struct iface *if_new(struct kif *);
void if_del(struct iface *);
void if_init(struct ldpd_conf *, struct iface *);
struct iface *if_lookup(u_short);
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_recvbuf(int);
int if_set_mcast_loop(int);
int if_set_mcast_ttl(int, u_int8_t);
int if_set_tos(int, int);
int if_set_reuse(int, int);
/* adjacency.c */
struct adj *adj_new(struct nbr *, struct hello_source *, u_int16_t,
struct in_addr);
void adj_del(struct adj *);
struct adj *adj_find(struct nbr *, struct hello_source *);
void adj_start_itimer(struct adj *);
void adj_stop_itimer(struct adj *);
struct tnbr *tnbr_new(struct ldpd_conf *, struct in_addr, int);
void tnbr_del(struct tnbr *);
void tnbr_init(struct ldpd_conf *, struct tnbr *);
struct tnbr *tnbr_find(struct in_addr);
struct ctl_adj *adj_to_ctl(struct adj *);
void ldpe_adj_ctl(struct ctl_conn *);
/* neighbor.c */
struct nbr *nbr_new(struct in_addr, struct in_addr);
void nbr_del(struct nbr *);
struct nbr *nbr_find_ldpid(u_int32_t);
struct nbr *nbr_find_peerid(u_int32_t);
int nbr_fsm(struct nbr *, enum nbr_event);
int nbr_session_active_role(struct nbr *);
void nbr_ktimer(int, short, void *);
void nbr_start_ktimer(struct nbr *);
void nbr_stop_ktimer(struct nbr *);
void nbr_ktimeout(int, short, void *);
void nbr_start_ktimeout(struct nbr *);
void nbr_stop_ktimeout(struct nbr *);
void nbr_idtimer(int, short, void *);
void nbr_start_idtimer(struct nbr *);
void nbr_stop_idtimer(struct nbr *);
int nbr_pending_idtimer(struct nbr *);
int nbr_pending_connect(struct nbr *);
int nbr_establish_connection(struct nbr *);
void nbr_mapping_add(struct nbr *, struct mapping_head *,
struct map *);
struct mapping_entry *nbr_mapping_find(struct nbr *, struct mapping_head *,
struct map *);
void nbr_mapping_del(struct nbr *, struct mapping_head *,
struct map *);
void mapping_list_clr(struct mapping_head *);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
void ldpe_nbr_ctl(struct ctl_conn *);
/* packet.c */
int gen_ldp_hdr(struct ibuf *, u_int16_t);
int gen_msg_tlv(struct ibuf *, u_int32_t, u_int16_t);
int send_packet(int, struct iface *, void *, size_t, struct sockaddr_in *);
void disc_recv_packet(int, short, void *);
void session_accept(int, short, void *);
struct tcp_conn *tcp_new(int, struct nbr *);
void tcp_close(struct tcp_conn *);
void session_read(int, short, void *);
void session_write(int, short, void *);
void session_close(struct nbr *);
void session_shutdown(struct nbr *, u_int32_t, u_int32_t, u_int32_t);
char *pkt_ptr; /* packet buffer */
#endif /* _LDPE_H_ */
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