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/* $OpenBSD: ldpe.h,v 1.79 2021/01/19 15:59:25 claudio Exp $ */
/*
* Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
* 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_
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <net/pfkeyv2.h>
#include "ldpd.h"
#define min(x,y) ((x) <= (y) ? (x) : (y))
#define max(x,y) ((x) > (y) ? (x) : (y))
struct hello_source {
enum hello_type type;
struct in_addr lsr_id;
struct {
struct iface_af *ia;
union ldpd_addr src_addr;
} link;
struct tnbr *target;
};
struct adj {
LIST_ENTRY(adj) global_entry;
LIST_ENTRY(adj) nbr_entry;
LIST_ENTRY(adj) ia_entry;
struct in_addr lsr_id;
struct nbr *nbr;
int ds_tlv;
struct hello_source source;
struct event inactivity_timer;
uint16_t holdtime;
union ldpd_addr trans_addr;
};
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 init_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;
uint32_t peerid; /* unique ID in DB */
int af;
int ds_tlv;
int v4_enabled; /* announce/process v4 msgs */
int v6_enabled; /* announce/process v6 msgs */
struct in_addr id; /* lsr id */
union ldpd_addr laddr; /* local address */
union ldpd_addr raddr; /* remote address */
uint32_t raddr_scope; /* remote address scope (v6) */
time_t uptime;
int fd;
int state;
uint32_t conf_seqnum;
int idtimer_cnt;
uint16_t keepalive;
uint16_t max_pdu_len;
uint32_t auth_spi_in;
uint32_t auth_spi_out;
int auth_established;
int flags;
};
#define F_NBR_GTSM_NEGOTIATED 0x01
#define F_NBR_CAP_DYNAMIC 0x02
#define F_NBR_CAP_TWCARD 0x04
#define F_NBR_CAP_UNOTIF 0x08
RB_HEAD(nbr_id_head, nbr);
RB_PROTOTYPE(nbr_id_head, nbr, id_tree, nbr_id_compare)
RB_HEAD(nbr_addr_head, nbr);
RB_PROTOTYPE(nbr_addr_head, nbr, addr_tree, nbr_addr_compare)
RB_HEAD(nbr_pid_head, nbr);
RB_PROTOTYPE(nbr_pid_head, nbr, pid_tree, nbr_pid_compare)
struct pending_conn {
TAILQ_ENTRY(pending_conn) entry;
int fd;
int af;
union ldpd_addr addr;
struct event ev_timeout;
};
#define PENDING_CONN_TIMEOUT 5
struct mapping_entry {
TAILQ_ENTRY(mapping_entry) entry;
struct map map;
};
struct ctl_conn;
struct ldpd_sysdep {
uint8_t no_pfkey;
uint8_t no_md5sig;
};
extern struct ldpd_conf *leconf;
extern struct ldpd_sysdep sysdep;
extern struct nbr_id_head nbrs_by_id;
extern struct nbr_addr_head nbrs_by_addr;
extern struct nbr_pid_head nbrs_by_pid;
/* 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_af *, struct tnbr *);
void recv_hello(struct in_addr, struct ldp_msg *, int, union ldpd_addr *,
struct iface *, int, char *, uint16_t);
/* init.c */
void send_init(struct nbr *);
int recv_init(struct nbr *, char *, uint16_t);
void send_capability(struct nbr *, uint16_t, int);
int recv_capability(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_full(struct tcp_conn *, struct notify_msg *);
void send_notification(struct tcp_conn *, uint32_t, uint32_t, uint16_t);
void send_notification_rtlvs(struct nbr *, uint32_t, uint32_t, uint16_t,
uint16_t, uint16_t, char *);
int recv_notification(struct nbr *, char *, uint16_t);
int gen_status_tlv(struct ibuf *, uint32_t, uint32_t, uint16_t);
/* address.c */
void send_address_single(struct nbr *, struct if_addr *, int);
void send_address_all(struct nbr *, int);
void send_mac_withdrawal(struct nbr *, struct map *, uint8_t *);
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);
int gen_pw_status_tlv(struct ibuf *, uint32_t);
uint16_t len_fec_tlv(struct map *);
int gen_fec_tlv(struct ibuf *, struct map *);
int tlv_decode_fec_elm(struct nbr *, struct ldp_msg *, char *,
uint16_t, struct map *);
/* ldpe.c */
void ldpe(int, int, char *);
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_reset_nbrs(int);
void ldpe_reset_ds_nbrs(void);
void ldpe_remove_dynamic_tnbrs(int);
void ldpe_stop_init_backoff(int);
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 */
struct iface *if_new(struct kif *);
void if_exit(struct iface *);
struct iface *if_lookup(struct ldpd_conf *, unsigned short);
struct iface_af *iface_af_get(struct iface *, int);
void if_addr_add(struct kaddr *);
void if_addr_del(struct kaddr *);
void if_update(struct iface *, int);
void if_update_all(int);
struct ctl_iface *if_to_ctl(struct iface_af *);
in_addr_t if_get_ipv4_addr(struct iface *);
/* adjacency.c */
struct adj *adj_new(struct in_addr, struct hello_source *,
union ldpd_addr *);
void adj_del(struct adj *, uint32_t);
struct adj *adj_find(struct hello_source *);
int adj_get_af(struct adj *adj);
void adj_start_itimer(struct adj *);
void adj_stop_itimer(struct adj *);
struct tnbr *tnbr_new(struct ldpd_conf *, int, union ldpd_addr *);
struct tnbr *tnbr_find(struct ldpd_conf *, int, union ldpd_addr *);
struct tnbr *tnbr_check(struct tnbr *);
void tnbr_update(struct tnbr *);
void tnbr_update_all(int);
struct ctl_adj *adj_to_ctl(struct adj *);
/* neighbor.c */
int nbr_fsm(struct nbr *, enum nbr_event);
struct nbr *nbr_new(struct in_addr, int, int, union ldpd_addr *,
uint32_t);
void nbr_del(struct nbr *);
struct nbr *nbr_find_ldpid(uint32_t);
struct nbr *nbr_find_addr(int, union ldpd_addr *);
struct nbr *nbr_find_peerid(uint32_t);
int nbr_adj_count(struct nbr *, int);
int nbr_session_active_role(struct nbr *);
void nbr_stop_ktimer(struct nbr *);
void nbr_stop_ktimeout(struct nbr *);
void nbr_stop_itimeout(struct nbr *);
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 *);
int nbr_gtsm_enabled(struct nbr *, struct nbr_params *);
int nbr_gtsm_setup(int, int, struct nbr_params *);
int nbr_gtsm_check(int, struct nbr *, struct nbr_params *);
struct nbr_params *nbr_params_new(struct in_addr);
struct nbr_params *nbr_params_find(struct ldpd_conf *, struct in_addr);
uint16_t nbr_get_keepalive(int, struct in_addr);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
void nbr_clear_ctl(struct ctl_nbr *);
/* packet.c */
int gen_ldp_hdr(struct ibuf *, uint16_t);
int gen_msg_hdr(struct ibuf *, uint16_t, uint16_t);
int send_packet(int, int, union ldpd_addr *,
struct iface_af *, void *, size_t);
void disc_recv_packet(int, short, void *);
void session_accept(int, short, void *);
void session_accept_nbr(struct nbr *, int);
void session_shutdown(struct nbr *, uint32_t, uint32_t,
uint32_t);
void session_close(struct nbr *);
struct tcp_conn *tcp_new(int, struct nbr *);
void pending_conn_del(struct pending_conn *);
struct pending_conn *pending_conn_find(int, union ldpd_addr *);
/* pfkey.c */
int pfkey_read(int, struct sadb_msg *);
int pfkey_establish(struct ldpd_conf *, struct nbr *);
int pfkey_remove(struct nbr *);
int pfkey_init(void);
/* 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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