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Diffstat (limited to 'ldpd/ldpe.h')
| -rw-r--r-- | ldpd/ldpe.h | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/ldpd/ldpe.h b/ldpd/ldpe.h new file mode 100644 index 0000000..ddb0e0d --- /dev/null +++ b/ldpd/ldpe.h @@ -0,0 +1,324 @@ +/* $OpenBSD$ */ + +/* + * 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 "queue.h" +#include "openbsd-tree.h" +#ifdef __OpenBSD__ +#include <net/pfkeyv2.h> +#endif + +#include "ldpd.h" +#include "lib/ldp_sync.h" + +/* forward declarations */ +TAILQ_HEAD(mapping_head, mapping_entry); + +struct hello_source { + enum hello_type type; + struct { + struct iface_af *ia; + union ldpd_addr src_addr; + } link; + struct tnbr *target; +}; + +struct adj { + RB_ENTRY(adj) global_entry, nbr_entry, ia_entry; + struct in_addr lsr_id; + struct nbr *nbr; + int ds_tlv; + struct hello_source source; + struct thread *inactivity_timer; + uint16_t holdtime; + union ldpd_addr trans_addr; +}; +RB_PROTOTYPE(global_adj_head, adj, global_entry, adj_compare) +RB_PROTOTYPE(nbr_adj_head, adj, nbr_entry, adj_compare) +RB_PROTOTYPE(ia_adj_head, adj, ia_entry, adj_compare) + +struct tcp_conn { + struct nbr *nbr; + int fd; + struct ibuf_read *rbuf; + struct evbuf wbuf; + struct thread *rev; + in_port_t lport; + in_port_t rport; +}; + +struct nbr { + RB_ENTRY(nbr) id_tree, addr_tree, pid_tree; + struct tcp_conn *tcp; + struct nbr_adj_head adj_tree; /* adjacencies */ + struct thread *ev_connect; + struct thread *keepalive_timer; + struct thread *keepalive_timeout; + struct thread *init_timeout; + struct thread *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 */ + ifindex_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; + struct ldp_stats stats; + + struct { + uint8_t established; + uint32_t spi_in; + uint32_t spi_out; + enum auth_method method; + char md5key[TCP_MD5_KEY_LEN]; + } auth; + 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 thread *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; +}; + +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 (*)(struct thread *), 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(void); +void ldpe_init(struct ldpd_init *); +int ldpe_imsg_compose_parent(int, pid_t, void *, + uint16_t); +void ldpe_imsg_compose_parent_sync(int, pid_t, void *, uint16_t); +int ldpe_imsg_compose_lde(int, uint32_t, pid_t, void *, + uint16_t); +int ldpe_acl_check(char *, int, union ldpd_addr *, uint8_t); +void ldpe_reset_nbrs(int); +void ldpe_reset_ds_nbrs(void); +void ldpe_remove_dynamic_tnbrs(int); +void ldpe_stop_init_backoff(int); +struct ctl_conn; +void ldpe_iface_ctl(struct ctl_conn *c, ifindex_t ifidx); +void ldpe_adj_ctl(struct ctl_conn *); +void ldpe_adj_detail_ctl(struct ctl_conn *); +void ldpe_nbr_ctl(struct ctl_conn *); +void ldpe_ldp_sync_ctl(struct ctl_conn *); +void mapping_list_add(struct mapping_head *, struct map *); +void mapping_list_clr(struct mapping_head *); +void ldpe_set_config_change_time(void); + +/* interface.c */ +struct iface *if_new(const char *); +void ldpe_if_init(struct iface *); +void ldpe_if_exit(struct iface *); +struct iface *if_lookup(struct ldpd_conf *c, ifindex_t ifidx); +struct iface *if_lookup_name(struct ldpd_conf *, const char *); +void if_update_info(struct iface *, struct kif *); +struct iface_af *iface_af_get(struct iface *, int); +void if_addr_add(struct kaddr *); +void if_addr_del(struct kaddr *); +void ldp_if_update(struct iface *, int); +void if_update_all(int); +uint16_t if_get_hello_holdtime(struct iface_af *); +uint16_t if_get_hello_interval(struct iface_af *); +uint16_t if_get_wait_for_sync_interval(void); +struct ctl_iface *if_to_ctl(struct iface_af *); +in_addr_t if_get_ipv4_addr(struct iface *); +int ldp_sync_fsm_adj_event(struct adj *, enum ldp_sync_event); +int ldp_sync_fsm_nbr_event(struct nbr *, enum ldp_sync_event); +int ldp_sync_fsm_state_req(struct ldp_igp_sync_if_state_req *); +int ldp_sync_fsm(struct iface *, enum ldp_sync_event); +void ldp_sync_fsm_reset_all(void); +const char *ldp_sync_state_name(int); +const char *ldp_sync_event_name(int); +struct ctl_ldp_sync *ldp_sync_to_ctl(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 in_addr, struct hello_source *); +int adj_get_af(const struct adj *adj); +void adj_start_itimer(struct adj *); +void adj_stop_itimer(struct adj *); +struct tnbr *tnbr_new(int, union ldpd_addr *); +struct tnbr *tnbr_find(struct ldpd_conf *, int, union ldpd_addr *); +struct tnbr *tnbr_check(struct ldpd_conf *, struct tnbr *); +void tnbr_update(struct tnbr *); +void tnbr_update_all(int); +uint16_t tnbr_get_hello_holdtime(struct tnbr *); +uint16_t tnbr_get_hello_interval(struct tnbr *); +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_get_first_ldpid(void); +struct nbr *nbr_get_next_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(struct thread *thread); +void session_accept(struct thread *thread); +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 *); + +extern char *pkt_ptr; /* packet buffer */ + +/* pfkey.c */ +#ifdef __OpenBSD__ +int pfkey_read(int, struct sadb_msg *); +int pfkey_establish(struct nbr *, struct nbr_params *); +int pfkey_remove(struct nbr *); +int pfkey_init(void); +#endif + +/* 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 *); + +DECLARE_HOOK(ldp_nbr_state_change, (struct nbr * nbr, int old_state), + (nbr, old_state)); + +#endif /* _LDPE_H_ */ |