1 /* $OpenBSD: dvmrpd.h,v 1.22 2016/09/02 16:20:34 benno Exp $ */ 2 3 /* 4 * Copyright (c) 2004, 2005, 2006 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 _DVMRPD_H_ 21 #define _DVMRPD_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 33 #define CONF_FILE "/etc/dvmrpd.conf" 34 #define DVMRPD_SOCKET "/var/run/dvmrpd.sock" 35 #define DVMRPD_USER "_dvmrpd" 36 37 #define NBR_HASHSIZE 128 38 39 #define NBR_IDSELF 1 40 #define NBR_CNTSTART (NBR_IDSELF + 1) 41 42 #define RT_BUF_SIZE 16384 43 44 #define DVMRPD_FLAG_NO_FIB_UPDATE 0x0001 45 46 #define F_DVMRPD_INSERTED 0x0001 47 #define F_KERNEL 0x0002 48 #define F_CONNECTED 0x0004 49 #define F_DOWN 0x0010 50 #define F_STATIC 0x0020 51 #define F_LONGER 0x0040 52 53 #define MAXVIFS 32 /* XXX */ 54 55 static const char * const log_procnames[] = { 56 "parent", 57 "dvmrpe", 58 "rde" 59 }; 60 61 struct imsgev { 62 struct imsgbuf ibuf; 63 void (*handler)(int, short, void *); 64 struct event ev; 65 void *data; 66 short events; 67 }; 68 69 enum imsg_type { 70 IMSG_NONE, 71 IMSG_CTL_RELOAD, 72 IMSG_CTL_SHOW_IFACE, 73 IMSG_CTL_SHOW_IGMP, 74 IMSG_CTL_SHOW_NBR, 75 IMSG_CTL_SHOW_RIB, 76 IMSG_CTL_SHOW_MFC, 77 IMSG_CTL_MFC_COUPLE, 78 IMSG_CTL_MFC_DECOUPLE, 79 IMSG_CTL_KROUTE, 80 IMSG_CTL_KROUTE_ADDR, 81 IMSG_CTL_IFINFO, 82 IMSG_CTL_SHOW_SUM, 83 IMSG_CTL_END, 84 IMSG_CTL_LOG_VERBOSE, 85 IMSG_IFINFO, 86 IMSG_ROUTE_REPORT, 87 IMSG_FULL_ROUTE_REPORT, 88 IMSG_FULL_ROUTE_REPORT_END, 89 IMSG_MFC_ADD, 90 IMSG_MFC_DEL, 91 IMSG_GROUP_ADD, 92 IMSG_GROUP_DEL, 93 IMSG_NBR_DEL, 94 IMSG_SEND_PRUNE, 95 IMSG_RECV_PRUNE, 96 IMSG_FLASH_UPDATE, 97 IMSG_FLASH_UPDATE_DS 98 }; 99 100 /* interface states */ 101 #define IF_STA_DOWN 0x01 102 #define IF_STA_QUERIER 0x02 103 #define IF_STA_NONQUERIER 0x04 104 #define IF_STA_ANY 0x07 105 #define IF_STA_ACTIVE (~IF_STA_DOWN) 106 107 /* interface events */ 108 enum iface_event { 109 IF_EVT_NOTHING, 110 IF_EVT_UP, 111 IF_EVT_QTMOUT, /* query timer expired */ 112 IF_EVT_QRECVD, /* query received, check for lower IP */ 113 IF_EVT_QPRSNTTMOUT, /* other querier present timeout */ 114 IF_EVT_DOWN 115 }; 116 117 /* interface actions */ 118 enum iface_action { 119 IF_ACT_NOTHING, 120 IF_ACT_STRT, 121 IF_ACT_QPRSNT, 122 IF_ACT_RST 123 }; 124 125 /* interface types */ 126 enum iface_type { 127 IF_TYPE_POINTOPOINT, 128 IF_TYPE_BROADCAST 129 }; 130 131 /* neighbor states */ 132 #define NBR_STA_DOWN 0x01 133 #define NBR_STA_1_WAY 0x02 134 #define NBR_STA_2_WAY 0x04 135 #define NBR_STA_ACTIVE (~NBR_STA_DOWN) 136 #define NBR_STA_ANY 0xff 137 138 struct group { 139 TAILQ_ENTRY(group) entry; 140 struct event dead_timer; 141 struct event v1_host_timer; 142 struct event retrans_timer; 143 144 struct in_addr addr; 145 146 struct iface *iface; 147 148 time_t uptime; 149 int state; 150 }; 151 152 struct rde_group { 153 TAILQ_ENTRY(rde_group) entry; 154 struct in_addr rde_group; 155 }; 156 157 struct mfc { 158 struct in_addr origin; 159 struct in_addr group; 160 u_short ifindex; 161 u_int8_t ttls[MAXVIFS]; 162 }; 163 164 struct prune { 165 struct in_addr origin; 166 struct in_addr netmask; 167 struct in_addr group; 168 struct in_addr nexthop; 169 u_short ifindex; 170 u_int32_t lifetime; 171 }; 172 173 struct nbr_msg { 174 struct in_addr address; 175 unsigned int ifindex; 176 }; 177 178 TAILQ_HEAD(rr_head, rr_entry); 179 RB_HEAD(src_head, src_node); 180 181 struct iface { 182 LIST_ENTRY(iface) entry; 183 struct event probe_timer; 184 struct event query_timer; 185 struct event querier_present_timer; 186 time_t uptime; 187 LIST_HEAD(, nbr) nbr_list; 188 TAILQ_HEAD(, group) group_list; 189 TAILQ_HEAD(, rde_group) rde_group_list; 190 struct rr_head rr_list; 191 192 char name[IF_NAMESIZE]; 193 struct in_addr addr; 194 struct in_addr dst; 195 struct in_addr mask; 196 struct in_addr querier; /* designated querier */ 197 198 u_int64_t baudrate; 199 u_int32_t gen_id; 200 u_int32_t group_cnt; 201 u_int32_t probe_interval; 202 203 u_int32_t query_interval; 204 u_int32_t query_resp_interval; 205 u_int32_t recv_query_resp_interval; 206 u_int32_t group_member_interval; 207 u_int32_t querier_present_interval; 208 u_int32_t startup_query_interval; 209 u_int32_t startup_query_cnt; 210 u_int32_t last_member_query_interval; 211 u_int32_t last_member_query_cnt; 212 u_int32_t last_member_query_time; 213 u_int32_t v1_querier_present_tmout; 214 u_int32_t v1_host_present_interval; 215 u_int32_t startup_query_counter; /* actual counter */ 216 u_int32_t dead_interval; 217 218 unsigned int ifindex; /* ifindex and vif */ 219 int fd; 220 int state; 221 int mtu; 222 int nbr_cnt; 223 int adj_cnt; 224 225 u_int16_t flags; 226 u_int16_t metric; 227 enum iface_type type; 228 229 u_int8_t robustness; 230 u_int8_t linkstate; 231 u_int8_t if_type; 232 u_int8_t passive; 233 u_int8_t igmp_version; 234 }; 235 236 /* dvmrp_conf */ 237 enum { 238 PROC_MAIN, 239 PROC_DVMRP_ENGINE, 240 PROC_RDE_ENGINE 241 } dvmrpd_process; 242 243 struct dvmrpd_conf { 244 struct event ev; 245 struct event report_timer; 246 u_int32_t gen_id; 247 u_int32_t opts; 248 #define DVMRPD_OPT_VERBOSE 0x00000001 249 #define DVMRPD_OPT_VERBOSE2 0x00000002 250 #define DVMRPD_OPT_NOACTION 0x00000004 251 int maxdepth; 252 LIST_HEAD(, iface) iface_list; 253 int dvmrp_socket; 254 int mroute_socket; 255 int flags; 256 }; 257 258 /* kroute */ 259 struct kroute { 260 struct in_addr prefix; 261 struct in_addr nexthop; 262 u_int16_t flags; 263 u_short ifindex; 264 u_int8_t prefixlen; 265 }; 266 267 struct kif { 268 char ifname[IF_NAMESIZE]; 269 u_int64_t baudrate; 270 int flags; 271 int mtu; 272 u_short ifindex; 273 u_int8_t if_type; 274 u_int8_t link_state; 275 u_int8_t nh_reachable; /* for nexthop verification */ 276 }; 277 278 /* control data structures */ 279 struct ctl_iface { 280 char name[IF_NAMESIZE]; 281 struct in_addr addr; 282 struct in_addr mask; 283 struct in_addr querier; 284 285 time_t probe_timer; 286 time_t query_timer; 287 time_t querier_present_timer; 288 time_t uptime; 289 290 u_int64_t baudrate; 291 u_int32_t gen_id; 292 u_int32_t group_cnt; 293 u_int32_t probe_interval; 294 u_int32_t query_interval; 295 u_int32_t query_resp_interval; 296 u_int32_t recv_query_resp_interval; 297 u_int32_t group_member_interval; 298 u_int32_t querier_present_interval; 299 u_int32_t startup_query_interval; 300 u_int32_t startup_query_cnt; 301 u_int32_t last_member_query_interval; 302 u_int32_t last_member_query_cnt; 303 u_int32_t last_member_query_time; 304 u_int32_t v1_querier_present_tmout; 305 u_int32_t v1_host_present_interval; 306 u_int32_t dead_interval; 307 308 unsigned int ifindex; 309 int state; 310 int mtu; 311 int nbr_cnt; 312 int adj_cnt; 313 314 u_int16_t flags; 315 u_int16_t metric; 316 enum iface_type type; 317 u_int8_t robustness; 318 u_int8_t linkstate; 319 u_int8_t if_type; 320 u_int8_t passive; 321 u_int8_t igmp_version; 322 }; 323 324 struct ctl_group { 325 time_t dead_timer; 326 time_t v1_host_timer; 327 time_t retrans_timer; 328 time_t uptime; 329 struct in_addr addr; 330 int state; 331 }; 332 333 struct ctl_nbr { 334 char name[IF_NAMESIZE]; 335 struct in_addr id; 336 struct in_addr addr; 337 time_t dead_timer; 338 time_t uptime; 339 int state; 340 }; 341 342 struct ctl_rt { 343 struct in_addr prefix; 344 struct in_addr nexthop; 345 struct in_addr area; 346 struct in_addr adv_rtr; 347 time_t uptime; 348 time_t expire; 349 u_int32_t cost; 350 u_int8_t flags; 351 u_int8_t prefixlen; 352 }; 353 354 struct ctl_mfc { 355 u_int8_t ttls[MAXVIFS]; /* outgoing vif(s) */ 356 struct in_addr origin; 357 struct in_addr group; 358 time_t uptime; 359 time_t expire; 360 u_short ifindex; /* incoming vif */ 361 }; 362 363 struct ctl_sum { 364 struct in_addr rtr_id; 365 u_int32_t hold_time; 366 }; 367 368 /* dvmrpd.c */ 369 void main_imsg_compose_dvmrpe(int, pid_t, void *, u_int16_t); 370 371 /* parse.y */ 372 struct dvmrpd_conf *parse_config(char *, int); 373 int cmdline_symset(char *); 374 375 int imsg_compose_event(struct imsgev *, u_int16_t, u_int32_t, pid_t, 376 int, void *, u_int16_t); 377 void imsg_event_add(struct imsgev *); 378 379 /* in_cksum.c */ 380 u_int16_t in_cksum(void *, size_t); 381 382 /* kroute.c */ 383 int kif_init(void); 384 void kif_clear(void); 385 int kr_init(void); 386 void kr_shutdown(void); 387 void kr_dispatch_msg(int, short, void *); 388 void kr_ifinfo(char *); 389 struct kif *kif_findname(char *); 390 391 u_int8_t prefixlen_classful(in_addr_t); 392 u_int8_t mask2prefixlen(in_addr_t); 393 in_addr_t prefixlen2mask(u_int8_t); 394 395 /* kmroute.c */ 396 int kmr_init(int); 397 void kmr_shutdown(void); 398 void kmr_recv_msg(int, short, void *); 399 void kmr_mfc_couple(void); 400 void kmr_mfc_decouple(void); 401 void kmroute_clear(void); 402 int mrt_init(int); 403 int mrt_done(int); 404 int mrt_add_vif(int, struct iface *); 405 void mrt_del_vif(int, struct iface *); 406 int mrt_add_mfc(int, struct mfc *); 407 int mrt_del_mfc(int, struct mfc *); 408 409 /* log.h */ 410 const char *nbr_state_name(int); 411 const char *if_state_name(int); 412 const char *if_type_name(enum iface_type); 413 const char *group_state_name(int); 414 415 /* printconf.c */ 416 void print_config(struct dvmrpd_conf *); 417 418 /* interface.c */ 419 struct iface *if_find_index(u_short); 420 421 #define PREFIX_SIZE(x) (((x) + 7) / 8) 422 423 #endif /* _DVMRPD_H_ */ 424