/* $OpenBSD: ospfe.h,v 1.7 2005/03/07 10:28:14 claudio Exp $ */ /* * Copyright (c) 2004, 2005 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 _OSPFE_H_ #define _OSPFE_H_ #define max(x,y) ((x) > (y) ? (x) : (y)) #include #include #include #include #include TAILQ_HEAD(ctl_conns, ctl_conn) ctl_conns; /* neighbor states */ #define NBR_STA_DOWN 0x0001 #define NBR_STA_ATTEMPT 0x0002 #define NBR_STA_INIT 0x0004 #define NBR_STA_2_WAY 0x0008 #define NBR_STA_XSTRT 0x0010 #define NBR_STA_SNAP 0x0020 #define NBR_STA_XCHNG 0x0040 #define NBR_STA_LOAD 0x0080 #define NBR_STA_FULL 0x0100 #define NBR_STA_ACTIVE (~NBR_STA_DOWN) #define NBR_STA_FLOOD (NBR_STA_XCHNG | NBR_STA_LOAD | NBR_STA_FULL) #define NBR_STA_ADJFORM (NBR_STA_XSTRT | NBR_STA_SNAP | NBR_STA_FLOOD) #define NBR_STA_BIDIR (NBR_STA_2_WAY | NBR_STA_ADJFORM) #define NBR_STA_PRELIM (NBR_STA_DOWN | NBR_STA_ATTEMPT | NBR_STA_INIT) #define NBR_STA_ANY 0xffff /* neighbor events */ enum nbr_event { NBR_EVT_NOTHING, NBR_EVT_HELLO_RCVD, NBR_EVT_STRT, NBR_EVT_2_WAY_RCVD, NBR_EVT_NEG_DONE, NBR_EVT_SNAP_DONE, NBR_EVT_XCHNG_DONE, NBR_EVT_BAD_LS_REQ, NBR_EVT_LOAD_DONE, NBR_EVT_ADJ_OK, NBR_EVT_SEQ_NUM_MIS, NBR_EVT_1_WAY_RCVD, NBR_EVT_KILL_NBR, NBR_EVT_ITIMER, NBR_EVT_LL_DOWN, NBR_EVT_ADJTMOUT }; /* neighbor actions */ enum nbr_action { NBR_ACT_NOTHING, NBR_ACT_STRT, NBR_ACT_RST_ITIMER, NBR_ACT_STRT_ITIMER, NBR_ACT_EVAL, NBR_ACT_SNAP, NBR_ACT_SNAP_DONE, NBR_ACT_XCHNG_DONE, NBR_ACT_ADJ_OK, NBR_ACT_RESTRT_DD, NBR_ACT_DEL, NBR_ACT_CLR_LST, NBR_ACT_HELLO_CHK }; struct lsa_entry { TAILQ_ENTRY(lsa_entry) entry; union { struct lsa_hdr *lu_lsa; struct lsa_ref *lu_ref; } le_data; }; #define le_lsa le_data.lu_lsa #define le_ref le_data.lu_ref struct lsa_ref { LIST_ENTRY(lsa_ref) entry; struct lsa_hdr hdr; void *data; time_t stamp; int refcnt; u_int16_t len; }; struct nbr_stats { u_int32_t sta_chng; }; struct nbr { LIST_ENTRY(nbr) entry, hash; struct event inactivity_timer; struct event db_tx_timer; struct event lsreq_tx_timer; struct event adj_timer; struct nbr_stats stats; struct lsa_head ls_retrans_list; struct lsa_head db_sum_list; struct lsa_head ls_req_list; struct in_addr addr; struct in_addr id; struct in_addr dr; /* designated router */ struct in_addr bdr; /* backup designated router */ struct iface *iface; struct lsa_entry *ls_req; struct lsa_entry *dd_end; u_int32_t dd_seq_num; u_int32_t dd_pending; u_int32_t peerid; /* unique ID in DB */ u_int32_t ls_req_cnt; int state; u_int8_t link_state; u_int8_t priority; u_int8_t options; u_int8_t last_rx_options; u_int8_t last_rx_bits; bool master; }; /* auth.c */ int auth_validate(struct ospf_hdr *, const struct iface *); int auth_gen(void *, u_int16_t, const struct iface *); /* database.c */ int send_db_description(struct nbr *); void recv_db_description(struct nbr *, char *, u_int16_t); void db_sum_list_add(struct nbr *, struct lsa_hdr *); int db_sum_list_del(struct nbr *, struct lsa_hdr *); void db_sum_list_clr(struct nbr *); void db_tx_timer(int, short, void *); int start_db_tx_timer(struct nbr *); int stop_db_tx_timer(struct nbr *); /* hello.c */ int send_hello(struct iface *); void recv_hello(struct iface *, struct in_addr, u_int32_t, char *, u_int16_t); /* ospfe.c */ pid_t ospfe(struct ospfd_conf *, int[2], int[2], int[2]); void ospfe_dispatch_main(int, short, void *); void ospfe_dispatch_rde(int, short, void *); int ospfe_imsg_compose_parent(int, pid_t, void *, u_int16_t); int ospfe_imsg_compose_rde(int, u_int32_t, pid_t, void *, u_int16_t); u_int32_t ospfe_router_id(void); void ospfe_iface_ctl(struct ctl_conn *, unsigned int); void ospfe_nbr_ctl(struct ctl_conn *); void orig_rtr_lsa(struct area *); void orig_net_lsa(struct iface *); /* interface.c */ int if_fsm(struct iface *, enum iface_event); struct iface *if_new(struct kif *); int if_del(struct iface *); int if_init(struct ospfd_conf *); int if_shutdown(struct ospfd_conf *); int if_act_start(struct iface *); int if_act_elect(struct iface *); int if_act_reset(struct iface *); struct ctl_iface *if_to_ctl(struct iface *); const char *if_state_name(int); const char *if_event_name(int); const char *if_action_name(int); const char *if_type_name(int); const char *if_auth_name(int); int if_join_group(struct iface *, struct in_addr *); int if_leave_group(struct iface *, struct in_addr *); int if_set_mcast(struct iface *); /* lsack.c */ int delay_lsa_ack(struct iface *, struct lsa_hdr *); int send_ls_ack(struct iface *, struct in_addr, void *data, int len); void recv_ls_ack(struct nbr *, char *, u_int16_t); int lsa_hdr_check(struct nbr *, struct lsa_hdr *); void ls_ack_list_add(struct iface *, struct lsa_hdr *); void ls_ack_list_free(struct iface *, struct lsa_entry *); void ls_ack_list_clr(struct iface *); bool ls_ack_list_empty(struct iface *); void ls_ack_tx_timer(int, short, void *); int start_ls_ack_tx_timer(struct iface *); int stop_ls_ack_tx_timer(struct iface *); /* lsreq.c */ int send_ls_req(struct nbr *); void recv_ls_req(struct nbr *, char *, u_int16_t); void ls_req_list_add(struct nbr *, struct lsa_hdr *); int ls_req_list_del(struct nbr *, struct lsa_hdr *); struct lsa_entry *ls_req_list_get(struct nbr *, struct lsa_hdr *); void ls_req_list_free(struct nbr *, struct lsa_entry *); void ls_req_list_clr(struct nbr *); bool ls_req_list_empty(struct nbr *); void ls_req_tx_timer(int, short, void *); int start_ls_req_tx_timer(struct nbr *); int stop_ls_req_tx_timer(struct nbr *); /* lsupdate.c */ int lsa_flood(struct iface *, struct nbr *, struct lsa_hdr *, void *, u_int16_t); int send_ls_update(struct iface *, struct in_addr, void *, int); void recv_ls_update(struct nbr *, char *, u_int16_t); int ls_retrans_list_add(struct nbr *, struct lsa_hdr *); int ls_retrans_list_del(struct nbr *, struct lsa_hdr *); struct lsa_entry *ls_retrans_list_get(struct nbr *, struct lsa_hdr *); void ls_retrans_list_free(struct nbr *, struct lsa_entry *); void ls_retrans_list_clr(struct nbr *); bool ls_retrans_list_empty(struct nbr *); void lsa_cache_init(u_int32_t); struct lsa_ref *lsa_cache_add(void *, u_int16_t); struct lsa_ref *lsa_cache_get(struct lsa_hdr *); void lsa_cache_put(struct lsa_ref *, struct nbr *); /* neighbor.c */ void nbr_init(u_int32_t); struct nbr *nbr_new(u_int32_t, struct iface *, int); int nbr_del(struct nbr *); struct nbr *nbr_find_id(struct iface *, u_int32_t); struct nbr *nbr_find_peerid(u_int32_t); int nbr_fsm(struct nbr *, enum nbr_event); void nbr_itimer(int, short, void *); int nbr_start_itimer(struct nbr *); int nbr_stop_itimer(struct nbr *); int nbr_reset_itimer(struct nbr *); void nbr_adj_timer(int, short, void *); int nbr_start_adj_timer(struct nbr *); int nbr_act_start(struct nbr *); int nbr_act_reset_itimer(struct nbr *); int nbr_act_start_itimer(struct nbr *); int nbr_act_eval(struct nbr *); int nbr_act_snapshot(struct nbr *); int nbr_act_exchange_done(struct nbr *); int nbr_act_adj_ok(struct nbr *); int nbr_act_restart_dd(struct nbr *); int nbr_act_delete(struct nbr *); int nbr_act_clear_lists(struct nbr *); int nbr_act_hello_check(struct nbr *); struct ctl_nbr *nbr_to_ctl(struct nbr *); const char *nbr_state_name(int); const char *nbr_event_name(int); const char *nbr_action_name(int); struct lsa_hdr *lsa_hdr_new(void); /* packet.c */ void gen_ospf_hdr(void *, struct iface *, u_int8_t); int send_packet(struct iface *, char *, int, struct sockaddr_in *); void recv_packet(int, short, void *); #endif /* _OSPFE_H_ */