/* $OpenBSD: ospfd.h,v 1.37 2005/09/24 21:10:32 msf Exp $ */ /* * Copyright (c) 2004 Esben Norby * Copyright (c) 2003, 2004 Henning Brauer * * 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 _OSPFD_H_ #define _OSPFD_H_ #include #include #include #include #include #include #include #include #define CONF_FILE "/etc/ospfd.conf" #define OSPFD_SOCKET "/var/run/ospfd.sock" #define OSPFD_USER "_ospfd" #define NBR_HASHSIZE 128 #define LSA_HASHSIZE 512 #define NBR_IDSELF 1 #define NBR_CNTSTART (NBR_IDSELF + 1) #define READ_BUF_SIZE 65535 #define PKG_DEF_SIZE 512 /* compromise */ #define RT_BUF_SIZE 16384 #define MAX_RTSOCK_BUF 128 * 1024 #define OSPFD_FLAG_NO_FIB_UPDATE 0x0001 #define F_OSPFD_INSERTED 0x0001 #define F_KERNEL 0x0002 #define F_CONNECTED 0x0004 #define F_DOWN 0x0010 #define F_STATIC 0x0020 #define F_DYNAMIC 0x0040 #define F_LONGER 0x0080 #define REDISTRIBUTE_STATIC 0x01 #define REDISTRIBUTE_CONNECTED 0x02 #define REDISTRIBUTE_DEFAULT 0x04 /* buffer */ struct buf { TAILQ_ENTRY(buf) entry; u_char *buf; size_t size; size_t max; size_t wpos; size_t rpos; int fd; }; struct msgbuf { TAILQ_HEAD(, buf) bufs; u_int32_t queued; int fd; }; #define IMSG_HEADER_SIZE sizeof(struct imsg_hdr) #define MAX_IMSGSIZE 8192 struct buf_read { u_char buf[READ_BUF_SIZE]; u_char *rptr; size_t wpos; }; struct imsgbuf { TAILQ_HEAD(, imsg_fd) fds; struct buf_read r; struct msgbuf w; struct event ev; void (*handler)(int, short, void *); int fd; pid_t pid; short events; }; enum imsg_type { IMSG_NONE, IMSG_CTL_RELOAD, IMSG_CTL_SHOW_INTERFACE, IMSG_CTL_SHOW_DATABASE, IMSG_CTL_SHOW_DB_EXT, IMSG_CTL_SHOW_DB_NET, IMSG_CTL_SHOW_DB_RTR, IMSG_CTL_SHOW_DB_SELF, IMSG_CTL_SHOW_DB_SUM, IMSG_CTL_SHOW_DB_ASBR, IMSG_CTL_SHOW_NBR, IMSG_CTL_SHOW_RIB, IMSG_CTL_SHOW_SUM, IMSG_CTL_SHOW_SUM_AREA, IMSG_CTL_FIB_COUPLE, IMSG_CTL_FIB_DECOUPLE, IMSG_CTL_AREA, IMSG_CTL_KROUTE, IMSG_CTL_KROUTE_ADDR, IMSG_CTL_IFINFO, IMSG_CTL_END, IMSG_KROUTE_CHANGE, IMSG_KROUTE_DELETE, IMSG_IFINFO, IMSG_NEIGHBOR_UP, IMSG_NEIGHBOR_DOWN, IMSG_NEIGHBOR_CHANGE, IMSG_NETWORK_ADD, IMSG_NETWORK_DEL, IMSG_DD, IMSG_DD_END, IMSG_DB_SNAPSHOT, IMSG_DB_END, IMSG_LS_REQ, IMSG_LS_UPD, IMSG_LS_ACK, IMSG_LS_FLOOD, IMSG_LS_BADREQ, IMSG_LS_MAXAGE, IMSG_ABR_UP, IMSG_ABR_DOWN }; struct imsg_hdr { enum imsg_type type; u_int16_t len; u_int32_t peerid; pid_t pid; }; struct imsg { struct imsg_hdr hdr; void *data; }; struct imsg_fd { TAILQ_ENTRY(imsg_fd) entry; int fd; }; /* area */ struct vertex; struct rde_nbr; RB_HEAD(lsa_tree, vertex); struct area { LIST_ENTRY(area) entry; struct in_addr id; struct lsa_tree lsa_tree; LIST_HEAD(, iface) iface_list; LIST_HEAD(, rde_nbr) nbr_list; /* list addr_range_list; */ u_int32_t stub_default_cost; u_int32_t num_spf_calc; u_int32_t dead_interval; int active; u_int16_t transmit_delay; u_int16_t hello_interval; u_int16_t rxmt_interval; u_int16_t metric; u_int8_t priority; u_int8_t transit; u_int8_t stub; }; /* interface states */ #define IF_STA_DOWN 0x01 #define IF_STA_LOOPBACK 0x02 #define IF_STA_WAITING 0x04 #define IF_STA_POINTTOPOINT 0x08 #define IF_STA_DROTHER 0x10 #define IF_STA_BACKUP 0x20 #define IF_STA_DR 0x40 #define IF_STA_DRORBDR (IF_STA_DR | IF_STA_BACKUP) #define IF_STA_MULTI (IF_STA_DROTHER | IF_STA_BACKUP | IF_STA_DR) #define IF_STA_ANY 0x7f /* interface events */ enum iface_event { IF_EVT_NOTHING, IF_EVT_UP, IF_EVT_WTIMER, IF_EVT_BACKUP_SEEN, IF_EVT_NBR_CHNG, IF_EVT_LOOP, IF_EVT_UNLOOP, IF_EVT_DOWN }; static const char * const if_event_names[] = { "NOTHING", "UP", "WAITTIMER", "BACKUPSEEN", "NEIGHBORCHANGE", "LOOP", "UNLOOP", "DOWN" }; /* interface actions */ enum iface_action { IF_ACT_NOTHING, IF_ACT_STRT, IF_ACT_ELECT, IF_ACT_RST }; /* interface types */ enum iface_type { IF_TYPE_POINTOPOINT, IF_TYPE_BROADCAST, IF_TYPE_NBMA, IF_TYPE_POINTOMULTIPOINT, IF_TYPE_VIRTUALLINK }; /* auth types */ enum auth_type { AUTH_NONE, AUTH_SIMPLE, AUTH_CRYPT }; /* spf states */ enum spf_state { SPF_IDLE, SPF_DELAY, SPF_HOLD, SPF_HOLDQUEUE }; enum dst_type { DT_NET, DT_RTR }; static const char * const dst_type_names[] = { "Network", "Router" }; enum path_type { PT_INTRA_AREA, PT_INTER_AREA, PT_TYPE1_EXT, PT_TYPE2_EXT }; enum rib_type { RIB_NET = 1, RIB_RTR, RIB_EXT }; static const char * const path_type_names[] = { "Intra-Area", "Inter-Area", "Type 1 ext", "Type 2 ext" }; struct auth_md { TAILQ_ENTRY(auth_md) entry; char key[MD5_DIGEST_LENGTH]; u_int8_t keyid; }; /* lsa list used in RDE and OE */ TAILQ_HEAD(lsa_head, lsa_entry); struct iface { LIST_ENTRY(iface) entry; struct event hello_timer; struct event wait_timer; struct event lsack_tx_timer; LIST_HEAD(, nbr) nbr_list; TAILQ_HEAD(, auth_md) auth_md_list; struct lsa_head ls_ack_list; char name[IF_NAMESIZE]; struct in_addr addr; struct in_addr dst; struct in_addr mask; struct in_addr abr_id; char *auth_key; struct nbr *dr; /* designated router */ struct nbr *bdr; /* backup designated router */ struct nbr *self; struct area *area; u_int32_t baudrate; u_int32_t dead_interval; u_int32_t ls_ack_cnt; u_int32_t crypt_seq_num; unsigned int ifindex; int fd; int state; int mtu; u_int16_t flags; u_int16_t transmit_delay; u_int16_t hello_interval; u_int16_t rxmt_interval; u_int16_t metric; enum iface_type type; enum auth_type auth_type; u_int8_t auth_keyid; u_int8_t linkstate; u_int8_t priority; u_int8_t passive; }; /* ospf_conf */ enum { PROC_MAIN, PROC_OSPF_ENGINE, PROC_RDE_ENGINE } ospfd_process; struct ospfd_conf { struct event ev; struct event spf_timer; struct in_addr rtr_id; struct lsa_tree lsa_tree; LIST_HEAD(, area) area_list; LIST_HEAD(, vertex) cand_list; u_int32_t opts; #define OSPFD_OPT_VERBOSE 0x00000001 #define OSPFD_OPT_VERBOSE2 0x00000002 #define OSPFD_OPT_NOACTION 0x00000004 u_int32_t spf_delay; u_int32_t spf_hold_time; int spf_state; int ospf_socket; int flags; int redistribute_flags; int options; /* OSPF options */ u_int8_t rfc1583compat; u_int8_t border; }; /* kroute */ struct kroute { struct in_addr prefix; struct in_addr nexthop; u_int16_t flags; u_short ifindex; u_int8_t prefixlen; }; struct kif { char ifname[IF_NAMESIZE]; u_long baudrate; int flags; int mtu; u_short ifindex; u_int8_t media_type; u_int8_t link_state; u_int8_t nh_reachable; /* for nexthop verification */ }; /* control data structures */ struct ctl_iface { char name[IF_NAMESIZE]; struct in_addr addr; struct in_addr mask; struct in_addr area; struct in_addr rtr_id; struct in_addr dr_id; struct in_addr dr_addr; struct in_addr bdr_id; struct in_addr bdr_addr; time_t hello_timer; u_int32_t baudrate; u_int32_t dead_interval; unsigned int ifindex; int state; int mtu; int nbr_cnt; int adj_cnt; u_int16_t transmit_delay; u_int16_t hello_interval; u_int16_t flags; u_int16_t metric; u_int16_t rxmt_interval; enum iface_type type; u_int8_t linkstate; u_int8_t priority; u_int8_t passive; enum auth_type auth_type; u_int8_t auth_keyid; }; struct ctl_nbr { char name[IF_NAMESIZE]; struct in_addr id; struct in_addr addr; struct in_addr dr; struct in_addr bdr; struct in_addr area; time_t dead_timer; u_int32_t db_sum_lst_cnt; u_int32_t ls_req_lst_cnt; u_int32_t ls_retrans_lst_cnt; u_int32_t state_chng_cnt; int nbr_state; int iface_state; u_int8_t priority; u_int8_t options; }; struct ctl_rt { struct in_addr prefix; struct in_addr nexthop; struct in_addr area; struct in_addr adv_rtr; u_int32_t cost; u_int32_t cost2; enum path_type p_type; enum dst_type d_type; u_int8_t flags; u_int8_t prefixlen; }; struct ctl_sum { struct in_addr rtr_id; u_int32_t spf_delay; u_int32_t spf_hold_time; u_int32_t num_ext_lsa; u_int32_t num_area; u_int8_t rfc1583compat; }; struct ctl_sum_area { struct in_addr area; u_int32_t num_iface; u_int32_t num_adj_nbr; u_int32_t num_spf_calc; u_int32_t num_lsa; }; /* area.c */ struct area *area_new(void); int area_del(struct area *); struct area *area_find(struct ospfd_conf *, struct in_addr); void area_track(struct area *, int); int area_border_router(struct ospfd_conf *); /* buffer.c */ struct buf *buf_open(size_t); struct buf *buf_dynamic(size_t, size_t); int buf_add(struct buf *, void *, size_t); void *buf_reserve(struct buf *, size_t); void *buf_seek(struct buf *, size_t, size_t); int buf_close(struct msgbuf *, struct buf *); int buf_write(int, struct buf *); void buf_free(struct buf *); void msgbuf_init(struct msgbuf *); void msgbuf_clear(struct msgbuf *); int msgbuf_write(struct msgbuf *); int msgbuf_writebound(struct msgbuf *); int msgbuf_unbounded(struct msgbuf *msgbuf); /* parse.y */ struct ospfd_conf *parse_config(char *, int); int cmdline_symset(char *); /* imsg.c */ void imsg_init(struct imsgbuf *, int, void (*)(int, short, void *)); int imsg_read(struct imsgbuf *); int imsg_get(struct imsgbuf *, struct imsg *); int imsg_compose(struct imsgbuf *, enum imsg_type, u_int32_t, pid_t, int, void *, u_int16_t); struct buf *imsg_create(struct imsgbuf *, enum imsg_type, u_int32_t, pid_t, u_int16_t); int imsg_add(struct buf *, void *, u_int16_t); int imsg_close(struct imsgbuf *, struct buf *); void imsg_free(struct imsg *); int imsg_get_fd(struct imsgbuf *); void imsg_event_add(struct imsgbuf *); /* needs to be provided externally */ /* in_cksum.c */ int in_cksum(void *, int); /* iso_cksum.c */ u_int16_t iso_cksum(void *, u_int16_t, u_int16_t); /* kroute.c */ int kif_init(void); int kr_init(int); int kr_change(struct kroute *); int kr_delete(struct kroute *); void kr_shutdown(void); void kr_fib_couple(void); void kr_fib_decouple(void); void kr_dispatch_msg(int, short, void *); int kr_nexthop_add(struct in_addr); void kr_nexthop_delete(struct in_addr); void kr_show_route(struct imsg *); void kr_ifinfo(char *, pid_t); struct kif *kif_findname(char *); void kif_update(struct kif *); int kif_validate(int); u_int8_t mask2prefixlen(in_addr_t); in_addr_t prefixlen2mask(u_int8_t); /* ospfd.c */ void main_imsg_compose_ospfe(int, pid_t, void *, u_int16_t); void main_imsg_compose_rde(int, pid_t, void *, u_int16_t); /* printconf.c */ void print_config(struct ospfd_conf *); #endif /* _OSPFD_H_ */