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/* $OpenBSD: ldpe.h,v 1.51 2016/05/23 18:55:21 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/ip.h>
#include <net/pfkeyv2.h>
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;
uint16_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, addr_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 laddr; /* local address */
struct in_addr raddr; /* remote address */
struct in_addr id; /* lsr id */
time_t uptime;
uint32_t peerid; /* unique ID in DB */
int fd;
int state;
int idtimer_cnt;
uint16_t keepalive;
uint16_t max_pdu_len;
struct {
uint8_t established;
uint32_t spi_in;
uint32_t spi_out;
enum auth_method method;
char md5key[TCP_MD5_KEY_LEN];
} auth;
};
struct pending_conn {
TAILQ_ENTRY(pending_conn) entry;
int fd;
struct in_addr addr;
struct event ev_timeout;
};
#define PENDING_CONN_TIMEOUT 5
struct mapping_entry {
TAILQ_ENTRY(mapping_entry) entry;
struct map map;
};
struct ldpd_sysdep {
uint8_t no_pfkey;
uint8_t no_md5sig;
};
/* 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 in_addr, struct ldp_msg *, struct in_addr,
struct iface *, int, char *, uint16_t);
/* init.c */
void send_init(struct nbr *);
int recv_init(struct nbr *, char *, uint16_t);
/* keepalive.c */
void send_keepalive(struct nbr *);
int recv_keepalive(struct nbr *, char *, uint16_t);
/* notification.c */
void send_notification_nbr(struct nbr *, uint32_t, uint32_t, uint32_t);
void send_notification(uint32_t, struct tcp_conn *, uint32_t,
uint32_t);
void send_notification_full(struct tcp_conn *, struct notify_msg *);
int recv_notification(struct nbr *, char *, uint16_t);
/* address.c */
void send_address(struct nbr *, struct if_addr *, int);
int recv_address(struct nbr *, char *, uint16_t);
/* labelmapping.c */
#define PREFIX_SIZE(x) (((x) + 7) / 8)
void send_labelmessage(struct nbr *, uint16_t, struct mapping_head *);
int recv_labelmessage(struct nbr *, char *, uint16_t, uint16_t);
void gen_fec_tlv(struct ibuf *, struct map *);
void gen_pw_status_tlv(struct ibuf *, uint32_t);
int tlv_decode_fec_elm(struct nbr *, struct ldp_msg *, char *,
uint16_t, struct map *);
/* ldpe.c */
pid_t ldpe(struct ldpd_conf *, int[2], int[2], int[2]);
int ldpe_imsg_compose_parent(int, pid_t, void *, uint16_t);
int ldpe_imsg_compose_lde(int, uint32_t, pid_t, void *,
uint16_t);
void ldpe_dispatch_main(int, short, void *);
void ldpe_dispatch_lde(int, short, void *);
void ldpe_dispatch_pfkey(int, short, void *);
void ldpe_setup_sockets(int, int, int);
void ldpe_close_sockets(void);
void ldpe_reset_nbrs(void);
void ldpe_remove_dynamic_tnbrs(void);
void ldpe_stop_init_backoff(void);
struct ctl_conn;
void ldpe_iface_ctl(struct ctl_conn *, unsigned int);
void ldpe_adj_ctl(struct ctl_conn *);
void ldpe_nbr_ctl(struct ctl_conn *);
void mapping_list_add(struct mapping_head *, struct map *);
void mapping_list_clr(struct mapping_head *);
/* interface.c */
int if_start(struct iface *);
int if_reset(struct iface *);
int if_update(struct iface *);
void if_update_all(void);
struct iface *if_new(struct kif *);
void if_del(struct iface *);
struct iface *if_lookup(struct ldpd_conf *, unsigned short);
struct if_addr *if_addr_new(struct kaddr *);
struct if_addr *if_addr_lookup(struct if_addr_head *, struct kaddr *);
void if_addr_add(struct kaddr *);
void if_addr_del(struct kaddr *);
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 *);
/* adjacency.c */
struct adj *adj_new(struct nbr *, struct hello_source *, 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);
void tnbr_del(struct tnbr *);
struct tnbr *tnbr_find(struct ldpd_conf *, struct in_addr);
struct tnbr *tnbr_check(struct tnbr *);
void tnbr_update(struct tnbr *);
void tnbr_update_all(void);
struct ctl_adj *adj_to_ctl(struct adj *);
/* neighbor.c */
struct nbr *nbr_new(struct in_addr, struct in_addr);
void nbr_del(struct nbr *);
void nbr_update_peerid(struct nbr *);
struct nbr *nbr_find_ldpid(uint32_t);
struct nbr *nbr_find_addr(struct in_addr);
struct nbr *nbr_find_peerid(uint32_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 *);
uint16_t nbr_get_keepalive(struct in_addr);
struct nbr_params *nbr_params_new(struct in_addr);
struct nbr_params *nbr_params_find(struct ldpd_conf *, struct in_addr);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
extern struct nbr_id_head nbrs_by_id;
RB_PROTOTYPE(nbr_id_head, nbr, id_tree, nbr_id_compare)
extern struct nbr_addr_head nbrs_by_addr;
RB_PROTOTYPE(nbr_addr_head, nbr, addr_tree, nbr_addr_compare)
extern struct nbr_pid_head nbrs_by_pid;
RB_PROTOTYPE(nbr_pid_head, nbr, pid_tree, nbr_pid_compare)
/* packet.c */
int gen_ldp_hdr(struct ibuf *, uint16_t);
int gen_msg_hdr(struct ibuf *, uint32_t, uint16_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 *);
void session_accept_nbr(struct nbr *, int);
void session_read(int, short, void *);
void session_write(int, short, void *);
void session_close(struct nbr *);
void session_shutdown(struct nbr *, uint32_t, uint32_t, uint32_t);
struct tcp_conn *tcp_new(int, struct nbr *);
void tcp_close(struct tcp_conn *);
struct pending_conn *pending_conn_new(int, struct in_addr);
void pending_conn_del(struct pending_conn *);
struct pending_conn *pending_conn_find(struct in_addr);
void pending_conn_timeout(int, short, void *);
char *pkt_ptr; /* packet buffer */
/* pfkey.c */
int pfkey_read(int, struct sadb_msg *);
int pfkey_establish(struct nbr *, struct nbr_params *);
int pfkey_remove(struct nbr *);
int pfkey_init(struct ldpd_sysdep *);
/* l2vpn.c */
void ldpe_l2vpn_init(struct l2vpn *);
void ldpe_l2vpn_exit(struct l2vpn *);
void ldpe_l2vpn_pw_init(struct l2vpn_pw *);
void ldpe_l2vpn_pw_exit(struct l2vpn_pw *);
#endif /* _LDPE_H_ */
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