/* $OpenBSD: ldpe.h,v 1.79 2021/01/19 15:59:25 claudio Exp $ */ /* * Copyright (c) 2013, 2016 Renato Westphal * Copyright (c) 2009 Michele Marchetto * Copyright (c) 2004, 2005, 2008 Esben Norby * * 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 #include #include #include #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_ */