1 /* $OpenBSD: ospf6d.h,v 1.52 2024/05/18 11:17:30 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2004, 2007 Esben Norby <norby@openbsd.org> 5 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #ifndef _OSPF6D_H_ 21 #define _OSPF6D_H_ 22 23 #include <sys/queue.h> 24 #include <sys/socket.h> 25 #include <sys/time.h> 26 #include <sys/tree.h> 27 #include <net/if.h> 28 #include <netinet/in.h> 29 #include <event.h> 30 31 #include <imsg.h> 32 #include "ospf6.h" 33 #include "log.h" 34 35 #define CONF_FILE "/etc/ospf6d.conf" 36 #define OSPF6D_SOCKET "/var/run/ospf6d.sock" 37 #define OSPF6D_USER "_ospf6d" 38 39 #define NBR_HASHSIZE 128 40 #define LSA_HASHSIZE 512 41 42 #define NBR_IDSELF 1 43 #define NBR_CNTSTART (NBR_IDSELF + 1) 44 45 #define READ_BUF_SIZE 65535 46 #define PKG_DEF_SIZE 512 /* compromise */ 47 #define RT_BUF_SIZE 16384 48 #define MAX_RTSOCK_BUF (2 * 1024 * 1024) 49 50 #define OSPFD_FLAG_NO_FIB_UPDATE 0x0001 51 #define OSPFD_FLAG_STUB_ROUTER 0x0002 52 53 #define F_OSPFD_INSERTED 0x0001 54 #define F_KERNEL 0x0002 55 #define F_CONNECTED 0x0008 56 #define F_DOWN 0x0010 57 #define F_STATIC 0x0020 58 #define F_DYNAMIC 0x0040 59 #define F_REJECT 0x0080 60 #define F_BLACKHOLE 0x0100 61 #define F_REDISTRIBUTED 0x0200 62 63 static const char * const log_procnames[] = { 64 "parent", 65 "ospfe", 66 "rde" 67 }; 68 69 struct imsgev { 70 struct imsgbuf ibuf; 71 void (*handler)(int, short, void *); 72 struct event ev; 73 void *data; 74 short events; 75 }; 76 77 enum imsg_type { 78 IMSG_NONE, 79 IMSG_CTL_RELOAD, 80 IMSG_CTL_SHOW_INTERFACE, 81 IMSG_CTL_SHOW_DATABASE, 82 IMSG_CTL_SHOW_DB_EXT, 83 IMSG_CTL_SHOW_DB_LINK, 84 IMSG_CTL_SHOW_DB_NET, 85 IMSG_CTL_SHOW_DB_RTR, 86 IMSG_CTL_SHOW_DB_INTRA, 87 IMSG_CTL_SHOW_DB_SELF, 88 IMSG_CTL_SHOW_DB_SUM, 89 IMSG_CTL_SHOW_DB_ASBR, 90 IMSG_CTL_SHOW_NBR, 91 IMSG_CTL_SHOW_RIB, 92 IMSG_CTL_SHOW_SUM, 93 IMSG_CTL_SHOW_SUM_AREA, 94 IMSG_CTL_FIB_COUPLE, 95 IMSG_CTL_FIB_DECOUPLE, 96 IMSG_CTL_FIB_RELOAD, 97 IMSG_CTL_AREA, 98 IMSG_CTL_IFACE, 99 IMSG_CTL_KROUTE, 100 IMSG_CTL_KROUTE_ADDR, 101 IMSG_CTL_END, 102 IMSG_CTL_LOG_VERBOSE, 103 IMSG_CONTROLFD, 104 IMSG_KROUTE_CHANGE, 105 IMSG_KROUTE_DELETE, 106 IMSG_IFINFO, 107 IMSG_IFADDRNEW, 108 IMSG_IFADDRDEL, 109 IMSG_NEIGHBOR_UP, 110 IMSG_NEIGHBOR_DOWN, 111 IMSG_NEIGHBOR_CHANGE, 112 IMSG_NETWORK_ADD, 113 IMSG_NETWORK_DEL, 114 IMSG_AREA_CHANGE, 115 IMSG_DD, 116 IMSG_DD_END, 117 IMSG_DB_SNAPSHOT, 118 IMSG_DB_END, 119 IMSG_LS_REQ, 120 IMSG_LS_UPD, 121 IMSG_LS_SNAP, 122 IMSG_LS_ACK, 123 IMSG_LS_FLOOD, 124 IMSG_LS_BADREQ, 125 IMSG_LS_MAXAGE, 126 IMSG_ABR_UP, 127 IMSG_ABR_DOWN, 128 IMSG_RECONF_CONF, 129 IMSG_RECONF_AREA, 130 IMSG_RECONF_END, 131 IMSG_DEMOTE 132 }; 133 134 /* area */ 135 struct vertex; 136 struct rde_nbr; 137 RB_HEAD(lsa_tree, vertex); 138 139 struct area { 140 LIST_ENTRY(area) entry; 141 struct in_addr id; 142 struct lsa_tree lsa_tree; 143 144 LIST_HEAD(, iface) iface_list; 145 LIST_HEAD(, rde_nbr) nbr_list; 146 /* list addr_range_list; */ 147 char demote_group[IFNAMSIZ]; 148 u_int32_t stub_default_cost; 149 u_int32_t num_spf_calc; 150 int active; 151 u_int8_t transit; 152 u_int8_t stub; 153 u_int8_t dirty; 154 u_int8_t demote_level; 155 }; 156 157 /* interface states */ 158 #define IF_STA_NEW 0x00 /* dummy state for reload */ 159 #define IF_STA_DOWN 0x01 160 #define IF_STA_LOOPBACK 0x02 161 #define IF_STA_WAITING 0x04 162 #define IF_STA_POINTTOPOINT 0x08 163 #define IF_STA_DROTHER 0x10 164 #define IF_STA_BACKUP 0x20 165 #define IF_STA_DR 0x40 166 #define IF_STA_DRORBDR (IF_STA_DR | IF_STA_BACKUP) 167 #define IF_STA_MULTI (IF_STA_DROTHER | IF_STA_BACKUP | IF_STA_DR) 168 #define IF_STA_ANY 0x7f 169 170 /* interface events */ 171 enum iface_event { 172 IF_EVT_NOTHING, 173 IF_EVT_UP, 174 IF_EVT_WTIMER, 175 IF_EVT_BACKUP_SEEN, 176 IF_EVT_NBR_CHNG, 177 IF_EVT_LOOP, 178 IF_EVT_UNLOOP, 179 IF_EVT_DOWN 180 }; 181 182 /* interface actions */ 183 enum iface_action { 184 IF_ACT_NOTHING, 185 IF_ACT_STRT, 186 IF_ACT_ELECT, 187 IF_ACT_RST 188 }; 189 190 /* interface types */ 191 enum iface_type { 192 IF_TYPE_POINTOPOINT, 193 IF_TYPE_BROADCAST, 194 IF_TYPE_NBMA, 195 IF_TYPE_POINTOMULTIPOINT, 196 IF_TYPE_VIRTUALLINK 197 }; 198 199 /* neighbor states */ 200 #define NBR_STA_DOWN 0x0001 201 #define NBR_STA_ATTEMPT 0x0002 202 #define NBR_STA_INIT 0x0004 203 #define NBR_STA_2_WAY 0x0008 204 #define NBR_STA_XSTRT 0x0010 205 #define NBR_STA_SNAP 0x0020 206 #define NBR_STA_XCHNG 0x0040 207 #define NBR_STA_LOAD 0x0080 208 #define NBR_STA_FULL 0x0100 209 #define NBR_STA_ACTIVE (~NBR_STA_DOWN) 210 #define NBR_STA_FLOOD (NBR_STA_XCHNG | NBR_STA_LOAD | NBR_STA_FULL) 211 #define NBR_STA_ADJFORM (NBR_STA_XSTRT | NBR_STA_SNAP | NBR_STA_FLOOD) 212 #define NBR_STA_BIDIR (NBR_STA_2_WAY | NBR_STA_ADJFORM) 213 #define NBR_STA_PRELIM (NBR_STA_DOWN | NBR_STA_ATTEMPT | NBR_STA_INIT) 214 #define NBR_STA_ANY 0xffff 215 216 /* neighbor events */ 217 enum nbr_event { 218 NBR_EVT_NOTHING, 219 NBR_EVT_HELLO_RCVD, 220 NBR_EVT_2_WAY_RCVD, 221 NBR_EVT_NEG_DONE, 222 NBR_EVT_SNAP_DONE, 223 NBR_EVT_XCHNG_DONE, 224 NBR_EVT_BAD_LS_REQ, 225 NBR_EVT_LOAD_DONE, 226 NBR_EVT_ADJ_OK, 227 NBR_EVT_SEQ_NUM_MIS, 228 NBR_EVT_1_WAY_RCVD, 229 NBR_EVT_KILL_NBR, 230 NBR_EVT_ITIMER, 231 NBR_EVT_LL_DOWN, 232 NBR_EVT_ADJTMOUT 233 }; 234 235 /* neighbor actions */ 236 enum nbr_action { 237 NBR_ACT_NOTHING, 238 NBR_ACT_RST_ITIMER, 239 NBR_ACT_STRT_ITIMER, 240 NBR_ACT_EVAL, 241 NBR_ACT_SNAP, 242 NBR_ACT_SNAP_DONE, 243 NBR_ACT_XCHNG_DONE, 244 NBR_ACT_ADJ_OK, 245 NBR_ACT_RESTRT_DD, 246 NBR_ACT_DEL, 247 NBR_ACT_CLR_LST, 248 NBR_ACT_HELLO_CHK 249 }; 250 251 /* spf states */ 252 enum spf_state { 253 SPF_IDLE, 254 SPF_DELAY, 255 SPF_HOLD, 256 SPF_HOLDQUEUE 257 }; 258 259 enum dst_type { 260 DT_NET, 261 DT_RTR 262 }; 263 264 enum path_type { 265 PT_INTRA_AREA, 266 PT_INTER_AREA, 267 PT_TYPE1_EXT, 268 PT_TYPE2_EXT 269 }; 270 271 enum rib_type { 272 RIB_NET = 1, 273 RIB_RTR, 274 RIB_EXT 275 }; 276 277 struct iface_addr { 278 TAILQ_ENTRY(iface_addr) entry; 279 struct in6_addr addr; 280 struct in6_addr dstbrd; 281 u_int8_t prefixlen; 282 u_int8_t redistribute; 283 }; 284 285 /* lsa list used in RDE and OE */ 286 TAILQ_HEAD(lsa_head, lsa_entry); 287 288 struct iface { 289 LIST_ENTRY(iface) entry; 290 TAILQ_ENTRY(iface) list; 291 struct event hello_timer; 292 struct event wait_timer; 293 struct event lsack_tx_timer; 294 295 LIST_HEAD(, nbr) nbr_list; 296 TAILQ_HEAD(, iface_addr) ifa_list; 297 struct lsa_head ls_ack_list; 298 299 struct lsa_tree lsa_tree; /* LSA with link local scope */ 300 301 char name[IF_NAMESIZE]; 302 char demote_group[IFNAMSIZ]; 303 char dependon[IFNAMSIZ]; 304 struct in6_addr addr; 305 struct in6_addr dst; 306 struct in_addr abr_id; 307 struct nbr *dr; /* designated router */ 308 struct nbr *bdr; /* backup designated router */ 309 struct nbr *self; 310 struct area *area; 311 312 u_int64_t baudrate; 313 u_int32_t ls_ack_cnt; 314 time_t uptime; 315 unsigned int ifindex; 316 u_int rdomain; 317 int fd; 318 int state; 319 int mtu; 320 int depend_ok; 321 u_int16_t flags; 322 u_int16_t transmit_delay; 323 u_int16_t hello_interval; 324 u_int16_t rxmt_interval; 325 u_int16_t dead_interval; 326 u_int16_t metric; 327 enum iface_type type; 328 u_int8_t if_type; 329 u_int8_t linkstate; 330 u_int8_t priority; 331 u_int8_t cflags; 332 #define F_IFACE_PASSIVE 0x01 333 #define F_IFACE_CONFIGURED 0x02 334 }; 335 336 struct ifaddrchange { 337 struct in6_addr addr; 338 struct in6_addr dstbrd; 339 unsigned int ifindex; 340 u_int8_t prefixlen; 341 }; 342 343 /* ospf_conf */ 344 enum ospfd_process { 345 PROC_MAIN, 346 PROC_OSPF_ENGINE, 347 PROC_RDE_ENGINE 348 }; 349 extern enum ospfd_process ospfd_process; 350 351 #define REDIST_CONNECTED 0x01 352 #define REDIST_STATIC 0x02 353 #define REDIST_LABEL 0x04 354 #define REDIST_ADDR 0x08 355 #define REDIST_NO 0x10 356 #define REDIST_DEFAULT 0x20 357 358 struct redistribute { 359 SIMPLEQ_ENTRY(redistribute) entry; 360 struct in6_addr addr; 361 u_int32_t metric; 362 u_int16_t label; 363 u_int16_t type; 364 u_int8_t prefixlen; 365 char dependon[IFNAMSIZ]; 366 }; 367 SIMPLEQ_HEAD(redist_list, redistribute); 368 369 struct ospfd_conf { 370 struct event ev; 371 struct in_addr rtr_id; 372 LIST_HEAD(, area) area_list; 373 LIST_HEAD(, vertex) cand_list; 374 struct redist_list redist_list; 375 376 u_int32_t opts; 377 #define OSPFD_OPT_VERBOSE 0x00000001 378 #define OSPFD_OPT_VERBOSE2 0x00000002 379 #define OSPFD_OPT_NOACTION 0x00000004 380 #define OSPFD_OPT_STUB_ROUTER 0x00000008 381 #define OSPFD_OPT_FORCE_DEMOTE 0x00000010 382 u_int32_t spf_delay; 383 u_int32_t spf_hold_time; 384 time_t uptime; 385 int spf_state; 386 int ospf_socket; 387 int flags; 388 int redist_label_or_prefix; 389 u_int8_t border; 390 u_int8_t redistribute; 391 u_int8_t fib_priority; 392 u_int rdomain; 393 char *csock; 394 }; 395 396 /* kroute */ 397 struct kroute { 398 struct in6_addr prefix; 399 struct in6_addr nexthop; 400 u_int32_t ext_tag; 401 u_int32_t metric; 402 unsigned int scope; /* scope of nexthop */ 403 u_int16_t flags; 404 u_int16_t rtlabel; 405 u_short ifindex; 406 u_int8_t prefixlen; 407 u_int8_t priority; 408 }; 409 410 /* name2id */ 411 struct n2id_label { 412 TAILQ_ENTRY(n2id_label) entry; 413 char *name; 414 u_int16_t id; 415 u_int32_t ext_tag; 416 int ref; 417 }; 418 419 TAILQ_HEAD(n2id_labels, n2id_label); 420 extern struct n2id_labels rt_labels; 421 422 /* control data structures */ 423 struct ctl_iface { 424 char name[IF_NAMESIZE]; 425 struct in6_addr addr; 426 struct in_addr area; 427 struct in_addr rtr_id; 428 struct in_addr dr_id; 429 struct in6_addr dr_addr; 430 struct in_addr bdr_id; 431 struct in6_addr bdr_addr; 432 time_t hello_timer; 433 time_t uptime; 434 u_int64_t baudrate; 435 u_int32_t dead_interval; 436 unsigned int ifindex; 437 int state; 438 int mtu; 439 int nbr_cnt; 440 int adj_cnt; 441 u_int16_t transmit_delay; 442 u_int16_t hello_interval; 443 u_int16_t flags; 444 u_int16_t metric; 445 u_int16_t rxmt_interval; 446 enum iface_type type; 447 u_int8_t linkstate; 448 u_int8_t if_type; 449 u_int8_t priority; 450 u_int8_t passive; 451 }; 452 453 struct ctl_nbr { 454 char name[IF_NAMESIZE]; 455 struct in_addr id; 456 struct in6_addr addr; 457 struct in_addr dr; 458 struct in_addr bdr; 459 struct in_addr area; 460 time_t dead_timer; 461 time_t uptime; 462 u_int32_t db_sum_lst_cnt; 463 u_int32_t ls_req_lst_cnt; 464 u_int32_t ls_retrans_lst_cnt; 465 u_int32_t state_chng_cnt; 466 u_int32_t options; 467 int nbr_state; 468 int iface_state; 469 u_int8_t priority; 470 }; 471 472 struct ctl_rt { 473 struct in6_addr prefix; 474 struct in6_addr nexthop; 475 struct in_addr area; 476 struct in_addr adv_rtr; 477 time_t uptime; 478 u_int32_t cost; 479 u_int32_t cost2; 480 unsigned int ifindex; /* scope of nexthop */ 481 enum path_type p_type; 482 enum dst_type d_type; 483 u_int8_t flags; 484 u_int8_t prefixlen; 485 u_int8_t connected; 486 }; 487 488 struct ctl_sum { 489 struct in_addr rtr_id; 490 u_int32_t spf_delay; 491 u_int32_t spf_hold_time; 492 u_int32_t num_ext_lsa; 493 u_int32_t num_area; 494 time_t uptime; 495 }; 496 497 struct ctl_sum_area { 498 struct in_addr area; 499 u_int32_t num_iface; 500 u_int32_t num_adj_nbr; 501 u_int32_t num_spf_calc; 502 u_int32_t num_lsa; 503 }; 504 505 struct demote_msg { 506 char demote_group[IF_NAMESIZE]; 507 int level; 508 }; 509 510 /* area.c */ 511 struct area *area_new(void); 512 int area_del(struct area *); 513 struct area *area_find(struct ospfd_conf *, struct in_addr); 514 void area_track(struct area *); 515 int area_border_router(struct ospfd_conf *); 516 u_int32_t area_ospf_options(struct area *); 517 518 /* carp.c */ 519 int carp_demote_init(char *, int); 520 void carp_demote_shutdown(void); 521 int carp_demote_get(char *); 522 int carp_demote_set(char *, int); 523 524 /* parse.y */ 525 struct ospfd_conf *parse_config(char *, int); 526 int cmdline_symset(char *); 527 void conf_clear_redist_list(struct redist_list *); 528 529 /* interface.c */ 530 int if_init(void); 531 struct iface *if_find(unsigned int); 532 struct iface *if_findname(char *); 533 struct iface *if_new(u_short, char *); 534 void if_update(struct iface *, int, int, u_int8_t, u_int8_t, 535 u_int64_t, u_int32_t); 536 537 /* iso_cksum.c */ 538 u_int16_t iso_cksum(void *, u_int16_t, u_int16_t); 539 540 /* kroute.c */ 541 int kr_init(int, u_int, int, u_int8_t); 542 int kr_change(struct kroute *, int); 543 int kr_delete(struct kroute *); 544 void kr_shutdown(void); 545 void kr_fib_couple(void); 546 void kr_fib_decouple(void); 547 void kr_fib_reload(void); 548 void kr_fib_update_prio(u_int8_t); 549 void kr_dispatch_msg(int, short, void *); 550 void kr_show_route(struct imsg *); 551 void kr_reload(int); 552 553 void embedscope(struct sockaddr_in6 *); 554 void recoverscope(struct sockaddr_in6 *); 555 void addscope(struct sockaddr_in6 *, u_int32_t); 556 void clearscope(struct in6_addr *); 557 u_int8_t mask2prefixlen(struct sockaddr_in6 *); 558 struct in6_addr *prefixlen2mask(u_int8_t); 559 void inet6applymask(struct in6_addr *, const struct in6_addr *, int); 560 561 int fetchifs(u_short); 562 563 /* logmsg.h */ 564 const char *log_in6addr(const struct in6_addr *); 565 const char *log_in6addr_scope(const struct in6_addr *, unsigned int); 566 const char *log_rtr_id(u_int32_t); 567 const char *log_sockaddr(void *); 568 const char *nbr_state_name(int); 569 const char *if_state_name(int); 570 const char *if_type_name(enum iface_type); 571 const char *dst_type_name(enum dst_type); 572 const char *path_type_name(enum path_type); 573 574 /* name2id.c */ 575 u_int16_t rtlabel_name2id(const char *); 576 const char *rtlabel_id2name(u_int16_t); 577 void rtlabel_unref(u_int16_t); 578 u_int32_t rtlabel_id2tag(u_int16_t); 579 u_int16_t rtlabel_tag2id(u_int32_t); 580 void rtlabel_tag(u_int16_t, u_int32_t); 581 582 /* ospf6d.c */ 583 void main_imsg_compose_ospfe(int, pid_t, void *, u_int16_t); 584 void main_imsg_compose_ospfe_fd(int, pid_t, int); 585 void main_imsg_compose_rde(int, pid_t, void *, u_int16_t); 586 int ospf_redistribute(struct kroute *, u_int32_t *); 587 void merge_config(struct ospfd_conf *, struct ospfd_conf *); 588 void imsg_event_add(struct imsgev *); 589 int imsg_compose_event(struct imsgev *, u_int16_t, u_int32_t, 590 pid_t, int, void *, u_int16_t); 591 int ifstate_is_up(struct iface *iface); 592 593 /* printconf.c */ 594 void print_config(struct ospfd_conf *); 595 596 #endif /* _OSPF6D_H_ */ 597