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Diffstat (limited to 'usr.sbin/ospfd/ospfe.h')
| -rw-r--r-- | usr.sbin/ospfd/ospfe.h | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/usr.sbin/ospfd/ospfe.h b/usr.sbin/ospfd/ospfe.h new file mode 100644 index 00000000000..0e0281cbfbd --- /dev/null +++ b/usr.sbin/ospfd/ospfe.h @@ -0,0 +1,286 @@ +/* $OpenBSD: ospfe.h,v 1.1 2005/01/28 14:05:40 claudio Exp $ */ + +/* + * Copyright (c) 2004, 2005 Esben Norby <esben.norby@ericsson.com> + * + * 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 <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> + +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 0xfffc +#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 peerid; /* unique ID in DB */ + + u_int32_t ls_req_cnt; + + int 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 *); + +/* interface.c */ +int if_fsm(struct iface *, enum iface_event); + +struct iface *if_new(char *, unsigned int); +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_ */ |