| File: | src/usr.sbin/ospf6d/interface.c |
| Warning: | line 514, column 26 Dereference of null pointer |
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| 1 | /* $OpenBSD: interface.c,v 1.30 2023/03/08 04:43:14 guenther Exp $ */ | |||
| 2 | ||||
| 3 | /* | |||
| 4 | * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> | |||
| 5 | * Copyright (c) 2004, 2005, 2007 Esben Norby <norby@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 | #include <sys/types.h> | |||
| 21 | #include <sys/ioctl.h> | |||
| 22 | #include <sys/time.h> | |||
| 23 | #include <sys/socket.h> | |||
| 24 | #include <netinet/in.h> | |||
| 25 | #include <arpa/inet.h> | |||
| 26 | #include <net/if.h> | |||
| 27 | #include <net/if_types.h> | |||
| 28 | #include <ctype.h> | |||
| 29 | #include <err.h> | |||
| 30 | #include <stdio.h> | |||
| 31 | #include <stdlib.h> | |||
| 32 | #include <unistd.h> | |||
| 33 | #include <string.h> | |||
| 34 | #include <event.h> | |||
| 35 | ||||
| 36 | #include "ospf6d.h" | |||
| 37 | #include "ospf6.h" | |||
| 38 | #include "log.h" | |||
| 39 | #include "ospfe.h" | |||
| 40 | ||||
| 41 | void if_hello_timer(int, short, void *); | |||
| 42 | void if_start_hello_timer(struct iface *); | |||
| 43 | void if_stop_hello_timer(struct iface *); | |||
| 44 | void if_stop_wait_timer(struct iface *); | |||
| 45 | void if_wait_timer(int, short, void *); | |||
| 46 | void if_start_wait_timer(struct iface *); | |||
| 47 | void if_stop_wait_timer(struct iface *); | |||
| 48 | struct nbr *if_elect(struct nbr *, struct nbr *); | |||
| 49 | ||||
| 50 | struct { | |||
| 51 | int state; | |||
| 52 | enum iface_event event; | |||
| 53 | enum iface_action action; | |||
| 54 | int new_state; | |||
| 55 | } iface_fsm[] = { | |||
| 56 | /* current state event that happened action to take resulting state */ | |||
| 57 | {IF_STA_DOWN0x01, IF_EVT_UP, IF_ACT_STRT, 0}, | |||
| 58 | {IF_STA_WAITING0x04, IF_EVT_BACKUP_SEEN, IF_ACT_ELECT, 0}, | |||
| 59 | {IF_STA_WAITING0x04, IF_EVT_WTIMER, IF_ACT_ELECT, 0}, | |||
| 60 | {IF_STA_ANY0x7f, IF_EVT_WTIMER, IF_ACT_NOTHING, 0}, | |||
| 61 | {IF_STA_WAITING0x04, IF_EVT_NBR_CHNG, IF_ACT_NOTHING, 0}, | |||
| 62 | {IF_STA_MULTI(0x10 | 0x20 | 0x40), IF_EVT_NBR_CHNG, IF_ACT_ELECT, 0}, | |||
| 63 | {IF_STA_ANY0x7f, IF_EVT_NBR_CHNG, IF_ACT_NOTHING, 0}, | |||
| 64 | {IF_STA_ANY0x7f, IF_EVT_DOWN, IF_ACT_RST, IF_STA_DOWN0x01}, | |||
| 65 | {IF_STA_ANY0x7f, IF_EVT_LOOP, IF_ACT_RST, IF_STA_LOOPBACK0x02}, | |||
| 66 | {IF_STA_LOOPBACK0x02, IF_EVT_UNLOOP, IF_ACT_NOTHING, IF_STA_DOWN0x01}, | |||
| 67 | {-1, IF_EVT_NOTHING, IF_ACT_NOTHING, 0}, | |||
| 68 | }; | |||
| 69 | ||||
| 70 | #if 0 | |||
| 71 | /* TODO virtual links */ | |||
| 72 | static int vlink_cnt = 0; | |||
| 73 | #endif | |||
| 74 | ||||
| 75 | TAILQ_HEAD(, iface)struct { struct iface *tqh_first; struct iface **tqh_last; } iflist; | |||
| 76 | ||||
| 77 | const char * const if_event_names[] = { | |||
| 78 | "NOTHING", | |||
| 79 | "UP", | |||
| 80 | "WAITTIMER", | |||
| 81 | "BACKUPSEEN", | |||
| 82 | "NEIGHBORCHANGE", | |||
| 83 | "LOOP", | |||
| 84 | "UNLOOP", | |||
| 85 | "DOWN" | |||
| 86 | }; | |||
| 87 | ||||
| 88 | const char * const if_action_names[] = { | |||
| 89 | "NOTHING", | |||
| 90 | "START", | |||
| 91 | "ELECT", | |||
| 92 | "RESET" | |||
| 93 | }; | |||
| 94 | ||||
| 95 | int | |||
| 96 | if_fsm(struct iface *iface, enum iface_event event) | |||
| 97 | { | |||
| 98 | int old_state; | |||
| 99 | int new_state = 0; | |||
| 100 | int i, ret = 0; | |||
| 101 | ||||
| 102 | old_state = iface->state; | |||
| 103 | ||||
| 104 | for (i = 0; iface_fsm[i].state != -1; i++) | |||
| 105 | if ((iface_fsm[i].state & old_state) && | |||
| 106 | (iface_fsm[i].event == event)) { | |||
| 107 | new_state = iface_fsm[i].new_state; | |||
| 108 | break; | |||
| 109 | } | |||
| 110 | ||||
| 111 | if (iface_fsm[i].state == -1) { | |||
| 112 | /* event outside of the defined fsm, ignore it. */ | |||
| 113 | log_debug("if_fsm: interface %s, " | |||
| 114 | "event %s not expected in state %s", iface->name, | |||
| 115 | if_event_names[event], if_state_name(old_state)); | |||
| 116 | return (0); | |||
| 117 | } | |||
| 118 | ||||
| 119 | switch (iface_fsm[i].action) { | |||
| 120 | case IF_ACT_STRT: | |||
| 121 | ret = if_act_start(iface); | |||
| 122 | break; | |||
| 123 | case IF_ACT_ELECT: | |||
| 124 | ret = if_act_elect(iface); | |||
| 125 | break; | |||
| 126 | case IF_ACT_RST: | |||
| 127 | ret = if_act_reset(iface); | |||
| 128 | break; | |||
| 129 | case IF_ACT_NOTHING: | |||
| 130 | /* do nothing */ | |||
| 131 | break; | |||
| 132 | } | |||
| 133 | ||||
| 134 | if (ret) { | |||
| 135 | log_debug("if_fsm: error changing state for interface %s, " | |||
| 136 | "event %s, state %s", iface->name, if_event_names[event], | |||
| 137 | if_state_name(old_state)); | |||
| 138 | return (-1); | |||
| 139 | } | |||
| 140 | ||||
| 141 | if (new_state != 0) | |||
| 142 | iface->state = new_state; | |||
| 143 | ||||
| 144 | if (iface->state != old_state) { | |||
| 145 | area_track(iface->area); | |||
| 146 | orig_rtr_lsa(iface->area); | |||
| 147 | orig_link_lsa(iface); | |||
| 148 | ||||
| 149 | /* state change inform RDE */ | |||
| 150 | ospfe_imsg_compose_rde(IMSG_IFINFO, iface->self->peerid, 0, | |||
| 151 | &iface->state, sizeof(iface->state)); | |||
| 152 | } | |||
| 153 | ||||
| 154 | if (old_state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08) && | |||
| 155 | (iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0) | |||
| 156 | ospfe_demote_iface(iface, 0); | |||
| 157 | if ((old_state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0 && | |||
| 158 | iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) | |||
| 159 | ospfe_demote_iface(iface, 1); | |||
| 160 | ||||
| 161 | log_debug("if_fsm: event %s resulted in action %s and changing " | |||
| 162 | "state for interface %s from %s to %s", | |||
| 163 | if_event_names[event], if_action_names[iface_fsm[i].action], | |||
| 164 | iface->name, if_state_name(old_state), if_state_name(iface->state)); | |||
| 165 | ||||
| 166 | return (ret); | |||
| 167 | } | |||
| 168 | ||||
| 169 | int | |||
| 170 | if_init(void) | |||
| 171 | { | |||
| 172 | TAILQ_INIT(&iflist)do { (&iflist)->tqh_first = ((void *)0); (&iflist) ->tqh_last = &(&iflist)->tqh_first; } while (0); | |||
| 173 | ||||
| 174 | return (fetchifs(0)); | |||
| 175 | } | |||
| 176 | ||||
| 177 | /* XXX using a linked list should be OK for now */ | |||
| 178 | struct iface * | |||
| 179 | if_find(unsigned int ifindex) | |||
| 180 | { | |||
| 181 | struct iface *iface; | |||
| 182 | ||||
| 183 | TAILQ_FOREACH(iface, &iflist, list)for((iface) = ((&iflist)->tqh_first); (iface) != ((void *)0); (iface) = ((iface)->list.tqe_next)) { | |||
| 184 | if (ifindex == iface->ifindex) | |||
| 185 | return (iface); | |||
| 186 | } | |||
| 187 | return (NULL((void *)0)); | |||
| 188 | } | |||
| 189 | ||||
| 190 | struct iface * | |||
| 191 | if_findname(char *name) | |||
| 192 | { | |||
| 193 | struct iface *iface; | |||
| 194 | ||||
| 195 | TAILQ_FOREACH(iface, &iflist, list)for((iface) = ((&iflist)->tqh_first); (iface) != ((void *)0); (iface) = ((iface)->list.tqe_next)) { | |||
| 196 | if (!strcmp(name, iface->name)) | |||
| 197 | return (iface); | |||
| 198 | } | |||
| 199 | return (NULL((void *)0)); | |||
| 200 | } | |||
| 201 | ||||
| 202 | struct iface * | |||
| 203 | if_new(u_short ifindex, char *ifname) | |||
| 204 | { | |||
| 205 | struct iface *iface; | |||
| 206 | ||||
| 207 | if ((iface = calloc(1, sizeof(*iface))) == NULL((void *)0)) | |||
| 208 | err(1, "if_new: calloc"); | |||
| 209 | ||||
| 210 | iface->state = IF_STA_DOWN0x01; | |||
| 211 | ||||
| 212 | LIST_INIT(&iface->nbr_list)do { ((&iface->nbr_list)->lh_first) = ((void *)0); } while (0); | |||
| 213 | TAILQ_INIT(&iface->ifa_list)do { (&iface->ifa_list)->tqh_first = ((void *)0); ( &iface->ifa_list)->tqh_last = &(&iface-> ifa_list)->tqh_first; } while (0); | |||
| 214 | TAILQ_INIT(&iface->ls_ack_list)do { (&iface->ls_ack_list)->tqh_first = ((void *)0) ; (&iface->ls_ack_list)->tqh_last = &(&iface ->ls_ack_list)->tqh_first; } while (0); | |||
| 215 | RB_INIT(&iface->lsa_tree)do { (&iface->lsa_tree)->rbh_root = ((void *)0); } while (0); | |||
| 216 | ||||
| 217 | #if 0 | |||
| 218 | /* TODO */ | |||
| 219 | if (virtual) { | |||
| 220 | iface->type = IF_TYPE_VIRTUALLINK; | |||
| 221 | snprintf(iface->name, sizeof(iface->name), "vlink%d", | |||
| 222 | vlink_cnt++); | |||
| 223 | iface->flags |= IFF_UP0x1; | |||
| 224 | iface->mtu = IP_MSS576; | |||
| 225 | return (iface); | |||
| 226 | } | |||
| 227 | #endif | |||
| 228 | strlcpy(iface->name, ifname, sizeof(iface->name)); | |||
| 229 | iface->ifindex = ifindex; | |||
| 230 | ||||
| 231 | TAILQ_INSERT_TAIL(&iflist, iface, list)do { (iface)->list.tqe_next = ((void *)0); (iface)->list .tqe_prev = (&iflist)->tqh_last; *(&iflist)->tqh_last = (iface); (&iflist)->tqh_last = &(iface)->list .tqe_next; } while (0); | |||
| 232 | ||||
| 233 | return (iface); | |||
| 234 | } | |||
| 235 | ||||
| 236 | void | |||
| 237 | if_update(struct iface *iface, int mtu, int flags, u_int8_t type, | |||
| 238 | u_int8_t state, u_int64_t rate, u_int32_t rdomain) | |||
| 239 | { | |||
| 240 | iface->mtu = mtu; | |||
| 241 | iface->flags = flags; | |||
| 242 | iface->if_type = type; | |||
| 243 | iface->linkstate = state; | |||
| 244 | iface->baudrate = rate; | |||
| 245 | iface->rdomain = rdomain; | |||
| 246 | ||||
| 247 | /* set type */ | |||
| 248 | if (flags & IFF_POINTOPOINT0x10) | |||
| 249 | iface->type = IF_TYPE_POINTOPOINT; | |||
| 250 | if (flags & IFF_BROADCAST0x2 && flags & IFF_MULTICAST0x8000) | |||
| 251 | iface->type = IF_TYPE_BROADCAST; | |||
| 252 | if (flags & IFF_LOOPBACK0x8) { | |||
| 253 | iface->type = IF_TYPE_POINTOPOINT; | |||
| 254 | iface->cflags |= F_IFACE_PASSIVE0x01; | |||
| 255 | } | |||
| 256 | } | |||
| 257 | ||||
| 258 | void | |||
| 259 | if_del(struct iface *iface) | |||
| 260 | { | |||
| 261 | struct nbr *nbr = NULL((void *)0); | |||
| 262 | ||||
| 263 | log_debug("if_del: interface %s", iface->name); | |||
| 264 | ||||
| 265 | /* revert the demotion when the interface is deleted */ | |||
| 266 | if ((iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0) | |||
| 267 | ospfe_demote_iface(iface, 1); | |||
| 268 | ||||
| 269 | /* clear lists etc */ | |||
| 270 | while ((nbr = LIST_FIRST(&iface->nbr_list)((&iface->nbr_list)->lh_first)) != NULL((void *)0)) | |||
| 271 | nbr_del(nbr); | |||
| 272 | ||||
| 273 | if (evtimer_pending(&iface->hello_timer, NULL)event_pending(&iface->hello_timer, 0x01, ((void *)0))) | |||
| 274 | evtimer_del(&iface->hello_timer)event_del(&iface->hello_timer); | |||
| 275 | if (evtimer_pending(&iface->wait_timer, NULL)event_pending(&iface->wait_timer, 0x01, ((void *)0))) | |||
| 276 | evtimer_del(&iface->wait_timer)event_del(&iface->wait_timer); | |||
| 277 | if (evtimer_pending(&iface->lsack_tx_timer, NULL)event_pending(&iface->lsack_tx_timer, 0x01, ((void *)0 ))) | |||
| 278 | evtimer_del(&iface->lsack_tx_timer)event_del(&iface->lsack_tx_timer); | |||
| 279 | ||||
| 280 | ls_ack_list_clr(iface); | |||
| 281 | TAILQ_REMOVE(&iflist, iface, list)do { if (((iface)->list.tqe_next) != ((void *)0)) (iface)-> list.tqe_next->list.tqe_prev = (iface)->list.tqe_prev; else (&iflist)->tqh_last = (iface)->list.tqe_prev; *(iface )->list.tqe_prev = (iface)->list.tqe_next; ; ; } while ( 0); | |||
| 282 | free(iface); | |||
| 283 | } | |||
| 284 | ||||
| 285 | void | |||
| 286 | if_start(struct ospfd_conf *xconf, struct iface *iface) | |||
| 287 | { | |||
| 288 | /* init the dummy local neighbor */ | |||
| 289 | iface->self = nbr_new(ospfe_router_id(), iface, iface->ifindex, 1, | |||
| 290 | NULL((void *)0)); | |||
| 291 | ||||
| 292 | /* set event handlers for interface */ | |||
| 293 | evtimer_set(&iface->lsack_tx_timer, ls_ack_tx_timer, iface)event_set(&iface->lsack_tx_timer, -1, 0, ls_ack_tx_timer , iface); | |||
| 294 | evtimer_set(&iface->hello_timer, if_hello_timer, iface)event_set(&iface->hello_timer, -1, 0, if_hello_timer, iface ); | |||
| 295 | evtimer_set(&iface->wait_timer, if_wait_timer, iface)event_set(&iface->wait_timer, -1, 0, if_wait_timer, iface ); | |||
| 296 | ||||
| 297 | iface->fd = xconf->ospf_socket; | |||
| 298 | ||||
| 299 | ospfe_demote_iface(iface, 0); | |||
| 300 | ||||
| 301 | if (if_fsm(iface, IF_EVT_UP)) | |||
| 302 | log_debug("error starting interface %s", iface->name); | |||
| 303 | } | |||
| 304 | ||||
| 305 | /* timers */ | |||
| 306 | void | |||
| 307 | if_hello_timer(int fd, short event, void *arg) | |||
| 308 | { | |||
| 309 | struct iface *iface = arg; | |||
| 310 | struct timeval tv; | |||
| 311 | ||||
| 312 | send_hello(iface); | |||
| 313 | ||||
| 314 | /* reschedule hello_timer */ | |||
| 315 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 316 | tv.tv_sec = iface->hello_interval; | |||
| 317 | if (evtimer_add(&iface->hello_timer, &tv)event_add(&iface->hello_timer, &tv) == -1) | |||
| 318 | fatal("if_hello_timer"); | |||
| 319 | } | |||
| 320 | ||||
| 321 | void | |||
| 322 | if_start_hello_timer(struct iface *iface) | |||
| 323 | { | |||
| 324 | struct timeval tv; | |||
| 325 | ||||
| 326 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 327 | if (evtimer_add(&iface->hello_timer, &tv)event_add(&iface->hello_timer, &tv) == -1) | |||
| 328 | fatal("if_start_hello_timer"); | |||
| 329 | } | |||
| 330 | ||||
| 331 | void | |||
| 332 | if_stop_hello_timer(struct iface *iface) | |||
| 333 | { | |||
| 334 | if (evtimer_del(&iface->hello_timer)event_del(&iface->hello_timer) == -1) | |||
| 335 | fatal("if_stop_hello_timer"); | |||
| 336 | } | |||
| 337 | ||||
| 338 | void | |||
| 339 | if_wait_timer(int fd, short event, void *arg) | |||
| 340 | { | |||
| 341 | struct iface *iface = arg; | |||
| 342 | ||||
| 343 | if_fsm(iface, IF_EVT_WTIMER); | |||
| ||||
| 344 | } | |||
| 345 | ||||
| 346 | void | |||
| 347 | if_start_wait_timer(struct iface *iface) | |||
| 348 | { | |||
| 349 | struct timeval tv; | |||
| 350 | ||||
| 351 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 352 | tv.tv_sec = iface->dead_interval; | |||
| 353 | if (evtimer_add(&iface->wait_timer, &tv)event_add(&iface->wait_timer, &tv) == -1) | |||
| 354 | fatal("if_start_wait_timer"); | |||
| 355 | } | |||
| 356 | ||||
| 357 | void | |||
| 358 | if_stop_wait_timer(struct iface *iface) | |||
| 359 | { | |||
| 360 | if (evtimer_del(&iface->wait_timer)event_del(&iface->wait_timer) == -1) | |||
| 361 | fatal("if_stop_wait_timer"); | |||
| 362 | } | |||
| 363 | ||||
| 364 | /* actions */ | |||
| 365 | int | |||
| 366 | if_act_start(struct iface *iface) | |||
| 367 | { | |||
| 368 | struct in6_addr addr; | |||
| 369 | struct timeval now; | |||
| 370 | ||||
| 371 | if (!((iface->flags & IFF_UP0x1) && | |||
| 372 | LINK_STATE_IS_UP(iface->linkstate)((iface->linkstate) >= 4 || (iface->linkstate) == 0))) { | |||
| 373 | log_debug("if_act_start: interface %s link down", | |||
| 374 | iface->name); | |||
| 375 | return (0); | |||
| 376 | } | |||
| 377 | ||||
| 378 | if (iface->if_type == IFT_CARP0xf7 && | |||
| 379 | !(iface->cflags & F_IFACE_PASSIVE0x01)) { | |||
| 380 | /* force passive mode on carp interfaces */ | |||
| 381 | log_warnx("if_act_start: forcing interface %s to passive", | |||
| 382 | iface->name); | |||
| 383 | iface->cflags |= F_IFACE_PASSIVE0x01; | |||
| 384 | } | |||
| 385 | ||||
| 386 | gettimeofday(&now, NULL((void *)0)); | |||
| 387 | iface->uptime = now.tv_sec; | |||
| 388 | ||||
| 389 | /* loopback interfaces have a special state */ | |||
| 390 | if (iface->flags & IFF_LOOPBACK0x8) | |||
| 391 | iface->state = IF_STA_LOOPBACK0x02; | |||
| 392 | ||||
| 393 | if (iface->cflags & F_IFACE_PASSIVE0x01) { | |||
| 394 | /* for an update of stub network entries */ | |||
| 395 | orig_rtr_lsa(iface->area); | |||
| 396 | return (0); | |||
| 397 | } | |||
| 398 | ||||
| 399 | switch (iface->type) { | |||
| 400 | case IF_TYPE_POINTOPOINT: | |||
| 401 | inet_pton(AF_INET624, AllSPFRouters"ff02::5", &addr); | |||
| 402 | ||||
| 403 | if (if_join_group(iface, &addr)) | |||
| 404 | return (-1); | |||
| 405 | iface->state = IF_STA_POINTTOPOINT0x08; | |||
| 406 | break; | |||
| 407 | case IF_TYPE_VIRTUALLINK: | |||
| 408 | iface->state = IF_STA_POINTTOPOINT0x08; | |||
| 409 | break; | |||
| 410 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 411 | case IF_TYPE_NBMA: | |||
| 412 | log_debug("if_act_start: type %s not supported, interface %s", | |||
| 413 | if_type_name(iface->type), iface->name); | |||
| 414 | return (-1); | |||
| 415 | case IF_TYPE_BROADCAST: | |||
| 416 | inet_pton(AF_INET624, AllSPFRouters"ff02::5", &addr); | |||
| 417 | ||||
| 418 | if (if_join_group(iface, &addr)) | |||
| 419 | return (-1); | |||
| 420 | if (iface->priority == 0) { | |||
| 421 | iface->state = IF_STA_DROTHER0x10; | |||
| 422 | } else { | |||
| 423 | iface->state = IF_STA_WAITING0x04; | |||
| 424 | if_start_wait_timer(iface); | |||
| 425 | } | |||
| 426 | break; | |||
| 427 | default: | |||
| 428 | fatalx("if_act_start: unknown interface type"); | |||
| 429 | } | |||
| 430 | ||||
| 431 | /* hello timer needs to be started in any case */ | |||
| 432 | if_start_hello_timer(iface); | |||
| 433 | return (0); | |||
| 434 | } | |||
| 435 | ||||
| 436 | struct nbr * | |||
| 437 | if_elect(struct nbr *a, struct nbr *b) | |||
| 438 | { | |||
| 439 | if (a->priority > b->priority) | |||
| 440 | return (a); | |||
| 441 | if (a->priority < b->priority) | |||
| 442 | return (b); | |||
| 443 | if (ntohl(a->id.s_addr)(__uint32_t)(__builtin_constant_p(a->id.s_addr) ? (__uint32_t )(((__uint32_t)(a->id.s_addr) & 0xff) << 24 | (( __uint32_t)(a->id.s_addr) & 0xff00) << 8 | ((__uint32_t )(a->id.s_addr) & 0xff0000) >> 8 | ((__uint32_t) (a->id.s_addr) & 0xff000000) >> 24) : __swap32md (a->id.s_addr)) > ntohl(b->id.s_addr)(__uint32_t)(__builtin_constant_p(b->id.s_addr) ? (__uint32_t )(((__uint32_t)(b->id.s_addr) & 0xff) << 24 | (( __uint32_t)(b->id.s_addr) & 0xff00) << 8 | ((__uint32_t )(b->id.s_addr) & 0xff0000) >> 8 | ((__uint32_t) (b->id.s_addr) & 0xff000000) >> 24) : __swap32md (b->id.s_addr))) | |||
| 444 | return (a); | |||
| 445 | return (b); | |||
| 446 | } | |||
| 447 | ||||
| 448 | int | |||
| 449 | if_act_elect(struct iface *iface) | |||
| 450 | { | |||
| 451 | struct in6_addr addr; | |||
| 452 | struct nbr *nbr, *bdr = NULL((void *)0), *dr = NULL((void *)0); | |||
| 453 | int round = 0; | |||
| 454 | int changed = 0; | |||
| 455 | int old_state; | |||
| 456 | char b1[16], b2[16], b3[16], b4[16]; | |||
| 457 | ||||
| 458 | start: | |||
| 459 | /* elect backup designated router */ | |||
| 460 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void *)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 461 | if (nbr->priority == 0 || nbr
| |||
| 462 | nbr->state & NBR_STA_PRELIM(0x0001 | 0x0002 | 0x0004) || /* not available */ | |||
| 463 | nbr->dr.s_addr == nbr->id.s_addr) /* don't elect DR */ | |||
| 464 | continue; | |||
| 465 | if (bdr != NULL((void *)0)) { | |||
| 466 | /* | |||
| 467 | * routers announcing themselves as BDR have higher | |||
| 468 | * precedence over those routers announcing a | |||
| 469 | * different BDR. | |||
| 470 | */ | |||
| 471 | if (nbr->bdr.s_addr == nbr->id.s_addr) { | |||
| 472 | if (bdr->bdr.s_addr == bdr->id.s_addr) | |||
| 473 | bdr = if_elect(bdr, nbr); | |||
| 474 | else | |||
| 475 | bdr = nbr; | |||
| 476 | } else if (bdr->bdr.s_addr != bdr->id.s_addr) | |||
| 477 | bdr = if_elect(bdr, nbr); | |||
| 478 | } else | |||
| 479 | bdr = nbr; | |||
| 480 | } | |||
| 481 | ||||
| 482 | /* elect designated router */ | |||
| 483 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void *)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 484 | if (nbr->priority
| |||
| 485 | (nbr
| |||
| 486 | /* only DR may be elected check priority too */ | |||
| 487 | continue; | |||
| 488 | if (dr
| |||
| 489 | dr = nbr; | |||
| 490 | else | |||
| 491 | dr = if_elect(dr, nbr); | |||
| 492 | } | |||
| 493 | ||||
| 494 | if (dr
| |||
| 495 | /* no designate router found use backup DR */ | |||
| 496 | dr = bdr; | |||
| 497 | bdr = NULL((void *)0); | |||
| 498 | } | |||
| 499 | ||||
| 500 | /* | |||
| 501 | * if we are involved in the election (e.g. new DR or no | |||
| 502 | * longer BDR) redo the election | |||
| 503 | */ | |||
| 504 | if (round
| |||
| 505 | ((iface->self == dr && iface->self != iface->dr) || | |||
| 506 | (iface->self != dr
| |||
| 507 | (iface->self == bdr && iface->self != iface->bdr) || | |||
| 508 | (iface->self != bdr && iface->self == iface->bdr))) { | |||
| 509 | /* | |||
| 510 | * Reset announced DR/BDR to calculated one, so | |||
| 511 | * that we may get elected in the second round. | |||
| 512 | * This is needed to drop from a DR to a BDR. | |||
| 513 | */ | |||
| 514 | iface->self->dr.s_addr = dr->id.s_addr; | |||
| ||||
| 515 | if (bdr) | |||
| 516 | iface->self->bdr.s_addr = bdr->id.s_addr; | |||
| 517 | round = 1; | |||
| 518 | goto start; | |||
| 519 | } | |||
| 520 | ||||
| 521 | log_debug("if_act_elect: interface %s old dr %s new dr %s, " | |||
| 522 | "old bdr %s new bdr %s", iface->name, | |||
| 523 | iface->dr ? inet_ntop(AF_INET2, &iface->dr->id, b1, sizeof(b1)) : | |||
| 524 | "none", dr ? inet_ntop(AF_INET2, &dr->id, b2, sizeof(b2)) : "none", | |||
| 525 | iface->bdr ? inet_ntop(AF_INET2, &iface->bdr->id, b3, sizeof(b3)) : | |||
| 526 | "none", bdr ? inet_ntop(AF_INET2, &bdr->id, b4, sizeof(b4)) : | |||
| 527 | "none"); | |||
| 528 | ||||
| 529 | /* | |||
| 530 | * After the second round still DR or BDR change state to DR or BDR, | |||
| 531 | * etc. | |||
| 532 | */ | |||
| 533 | old_state = iface->state; | |||
| 534 | if (dr == iface->self) | |||
| 535 | iface->state = IF_STA_DR0x40; | |||
| 536 | else if (bdr == iface->self) | |||
| 537 | iface->state = IF_STA_BACKUP0x20; | |||
| 538 | else | |||
| 539 | iface->state = IF_STA_DROTHER0x10; | |||
| 540 | ||||
| 541 | /* TODO if iface is NBMA send all non eligible neighbors event Start */ | |||
| 542 | ||||
| 543 | /* | |||
| 544 | * if DR or BDR changed issue a AdjOK? event for all neighbors > 2-Way | |||
| 545 | */ | |||
| 546 | if (iface->dr != dr || iface->bdr != bdr) | |||
| 547 | changed = 1; | |||
| 548 | ||||
| 549 | iface->dr = dr; | |||
| 550 | iface->bdr = bdr; | |||
| 551 | ||||
| 552 | if (changed) { | |||
| 553 | inet_pton(AF_INET624, AllDRouters"ff02::6", &addr); | |||
| 554 | if (old_state & IF_STA_DRORBDR(0x40 | 0x20) && | |||
| 555 | (iface->state & IF_STA_DRORBDR(0x40 | 0x20)) == 0) { | |||
| 556 | if (if_leave_group(iface, &addr)) | |||
| 557 | return (-1); | |||
| 558 | } else if ((old_state & IF_STA_DRORBDR(0x40 | 0x20)) == 0 && | |||
| 559 | iface->state & IF_STA_DRORBDR(0x40 | 0x20)) { | |||
| 560 | if (if_join_group(iface, &addr)) | |||
| 561 | return (-1); | |||
| 562 | } | |||
| 563 | ||||
| 564 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void *)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 565 | if (nbr->state & NBR_STA_BIDIR(0x0008 | (0x0010 | 0x0020 | (0x0040 | 0x0080 | 0x0100)))) | |||
| 566 | nbr_fsm(nbr, NBR_EVT_ADJ_OK); | |||
| 567 | } | |||
| 568 | ||||
| 569 | orig_rtr_lsa(iface->area); | |||
| 570 | if (iface->state & IF_STA_DR0x40 || old_state & IF_STA_DR0x40) | |||
| 571 | orig_net_lsa(iface); | |||
| 572 | } | |||
| 573 | ||||
| 574 | if_start_hello_timer(iface); | |||
| 575 | return (0); | |||
| 576 | } | |||
| 577 | ||||
| 578 | int | |||
| 579 | if_act_reset(struct iface *iface) | |||
| 580 | { | |||
| 581 | struct nbr *nbr = NULL((void *)0); | |||
| 582 | struct in6_addr addr; | |||
| 583 | ||||
| 584 | if (iface->cflags & F_IFACE_PASSIVE0x01) { | |||
| 585 | /* for an update of stub network entries */ | |||
| 586 | orig_rtr_lsa(iface->area); | |||
| 587 | return (0); | |||
| 588 | } | |||
| 589 | ||||
| 590 | switch (iface->type) { | |||
| 591 | case IF_TYPE_POINTOPOINT: | |||
| 592 | case IF_TYPE_BROADCAST: | |||
| 593 | inet_pton(AF_INET624, AllSPFRouters"ff02::5", &addr); | |||
| 594 | if (if_leave_group(iface, &addr)) { | |||
| 595 | log_warnx("if_act_reset: error leaving group %s, " | |||
| 596 | "interface %s", log_in6addr(&addr), iface->name); | |||
| 597 | } | |||
| 598 | if (iface->state & IF_STA_DRORBDR(0x40 | 0x20)) { | |||
| 599 | inet_pton(AF_INET624, AllDRouters"ff02::6", &addr); | |||
| 600 | if (if_leave_group(iface, &addr)) { | |||
| 601 | log_warnx("if_act_reset: " | |||
| 602 | "error leaving group %s, interface %s", | |||
| 603 | log_in6addr(&addr), iface->name); | |||
| 604 | } | |||
| 605 | } | |||
| 606 | break; | |||
| 607 | case IF_TYPE_VIRTUALLINK: | |||
| 608 | /* nothing */ | |||
| 609 | break; | |||
| 610 | case IF_TYPE_NBMA: | |||
| 611 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 612 | log_debug("if_act_reset: type %s not supported, interface %s", | |||
| 613 | if_type_name(iface->type), iface->name); | |||
| 614 | return (-1); | |||
| 615 | default: | |||
| 616 | fatalx("if_act_reset: unknown interface type"); | |||
| 617 | } | |||
| 618 | ||||
| 619 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void *)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 620 | if (nbr_fsm(nbr, NBR_EVT_KILL_NBR)) { | |||
| 621 | log_debug("if_act_reset: error killing neighbor %s", | |||
| 622 | inet_ntoa(nbr->id)); | |||
| 623 | } | |||
| 624 | } | |||
| 625 | ||||
| 626 | iface->dr = NULL((void *)0); | |||
| 627 | iface->bdr = NULL((void *)0); | |||
| 628 | ||||
| 629 | ls_ack_list_clr(iface); | |||
| 630 | stop_ls_ack_tx_timer(iface); | |||
| 631 | if_stop_hello_timer(iface); | |||
| 632 | if_stop_wait_timer(iface); | |||
| 633 | ||||
| 634 | /* send empty hello to tell everybody that we are going down */ | |||
| 635 | send_hello(iface); | |||
| 636 | ||||
| 637 | return (0); | |||
| 638 | } | |||
| 639 | ||||
| 640 | struct ctl_iface * | |||
| 641 | if_to_ctl(struct iface *iface) | |||
| 642 | { | |||
| 643 | static struct ctl_iface ictl; | |||
| 644 | struct timeval tv, now, res; | |||
| 645 | struct nbr *nbr; | |||
| 646 | ||||
| 647 | memcpy(ictl.name, iface->name, sizeof(ictl.name)); | |||
| 648 | memcpy(&ictl.addr, &iface->addr, sizeof(ictl.addr)); | |||
| 649 | ictl.rtr_id.s_addr = ospfe_router_id(); | |||
| 650 | memcpy(&ictl.area, &iface->area->id, sizeof(ictl.area)); | |||
| 651 | if (iface->dr) { | |||
| 652 | memcpy(&ictl.dr_id, &iface->dr->id, sizeof(ictl.dr_id)); | |||
| 653 | memcpy(&ictl.dr_addr, &iface->dr->addr, sizeof(ictl.dr_addr)); | |||
| 654 | } else { | |||
| 655 | bzero(&ictl.dr_id, sizeof(ictl.dr_id)); | |||
| 656 | bzero(&ictl.dr_addr, sizeof(ictl.dr_addr)); | |||
| 657 | } | |||
| 658 | if (iface->bdr) { | |||
| 659 | memcpy(&ictl.bdr_id, &iface->bdr->id, sizeof(ictl.bdr_id)); | |||
| 660 | memcpy(&ictl.bdr_addr, &iface->bdr->addr, | |||
| 661 | sizeof(ictl.bdr_addr)); | |||
| 662 | } else { | |||
| 663 | bzero(&ictl.bdr_id, sizeof(ictl.bdr_id)); | |||
| 664 | bzero(&ictl.bdr_addr, sizeof(ictl.bdr_addr)); | |||
| 665 | } | |||
| 666 | ictl.ifindex = iface->ifindex; | |||
| 667 | ictl.state = iface->state; | |||
| 668 | ictl.mtu = iface->mtu; | |||
| 669 | ictl.nbr_cnt = 0; | |||
| 670 | ictl.adj_cnt = 0; | |||
| 671 | ictl.baudrate = iface->baudrate; | |||
| 672 | ictl.dead_interval = iface->dead_interval; | |||
| 673 | ictl.transmit_delay = iface->transmit_delay; | |||
| 674 | ictl.hello_interval = iface->hello_interval; | |||
| 675 | ictl.flags = iface->flags; | |||
| 676 | ictl.metric = iface->metric; | |||
| 677 | ictl.rxmt_interval = iface->rxmt_interval; | |||
| 678 | ictl.type = iface->type; | |||
| 679 | ictl.linkstate = iface->linkstate; | |||
| 680 | ictl.if_type = iface->if_type; | |||
| 681 | ictl.priority = iface->priority; | |||
| 682 | ictl.passive = (iface->cflags & F_IFACE_PASSIVE0x01) == F_IFACE_PASSIVE0x01; | |||
| 683 | ||||
| 684 | gettimeofday(&now, NULL((void *)0)); | |||
| 685 | if (evtimer_pending(&iface->hello_timer, &tv)event_pending(&iface->hello_timer, 0x01, &tv)) { | |||
| 686 | timersub(&tv, &now, &res)do { (&res)->tv_sec = (&tv)->tv_sec - (&now )->tv_sec; (&res)->tv_usec = (&tv)->tv_usec - (&now)->tv_usec; if ((&res)->tv_usec < 0) { (&res)->tv_sec--; (&res)->tv_usec += 1000000; } } while (0); | |||
| 687 | ictl.hello_timer = res.tv_sec; | |||
| 688 | } else | |||
| 689 | ictl.hello_timer = -1; | |||
| 690 | ||||
| 691 | if (iface->state != IF_STA_DOWN0x01) { | |||
| 692 | ictl.uptime = now.tv_sec - iface->uptime; | |||
| 693 | } else | |||
| 694 | ictl.uptime = 0; | |||
| 695 | ||||
| 696 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void *)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 697 | if (nbr == iface->self) | |||
| 698 | continue; | |||
| 699 | ictl.nbr_cnt++; | |||
| 700 | if (nbr->state & NBR_STA_ADJFORM(0x0010 | 0x0020 | (0x0040 | 0x0080 | 0x0100))) | |||
| 701 | ictl.adj_cnt++; | |||
| 702 | } | |||
| 703 | ||||
| 704 | return (&ictl); | |||
| 705 | } | |||
| 706 | ||||
| 707 | /* misc */ | |||
| 708 | void | |||
| 709 | if_set_sockbuf(int fd) | |||
| 710 | { | |||
| 711 | int bsize; | |||
| 712 | ||||
| 713 | bsize = 256 * 1024; | |||
| 714 | while (setsockopt(fd, SOL_SOCKET0xffff, SO_RCVBUF0x1002, &bsize, | |||
| 715 | sizeof(bsize)) == -1) | |||
| 716 | bsize /= 2; | |||
| 717 | ||||
| 718 | if (bsize != 256 * 1024) | |||
| 719 | log_warnx("if_set_sockbuf: recvbuf size only %d", bsize); | |||
| 720 | ||||
| 721 | bsize = 64 * 1024; | |||
| 722 | while (setsockopt(fd, SOL_SOCKET0xffff, SO_SNDBUF0x1001, &bsize, | |||
| 723 | sizeof(bsize)) == -1) | |||
| 724 | bsize /= 2; | |||
| 725 | ||||
| 726 | if (bsize != 64 * 1024) | |||
| 727 | log_warnx("if_set_sockbuf: sendbuf size only %d", bsize); | |||
| 728 | } | |||
| 729 | ||||
| 730 | int | |||
| 731 | if_join_group(struct iface *iface, struct in6_addr *addr) | |||
| 732 | { | |||
| 733 | struct ipv6_mreq mreq; | |||
| 734 | ||||
| 735 | switch (iface->type) { | |||
| 736 | case IF_TYPE_POINTOPOINT: | |||
| 737 | case IF_TYPE_BROADCAST: | |||
| 738 | log_debug("if_join_group: interface %s addr %s", | |||
| 739 | iface->name, log_in6addr(addr)); | |||
| 740 | mreq.ipv6mr_multiaddr = *addr; | |||
| 741 | mreq.ipv6mr_interface = iface->ifindex; | |||
| 742 | ||||
| 743 | if (setsockopt(iface->fd, IPPROTO_IPV641, IPV6_JOIN_GROUP12, | |||
| 744 | &mreq, sizeof(mreq)) == -1) { | |||
| 745 | log_warn("if_join_group: error IPV6_JOIN_GROUP, " | |||
| 746 | "interface %s address %s", iface->name, | |||
| 747 | log_in6addr(addr)); | |||
| 748 | return (-1); | |||
| 749 | } | |||
| 750 | break; | |||
| 751 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 752 | case IF_TYPE_VIRTUALLINK: | |||
| 753 | case IF_TYPE_NBMA: | |||
| 754 | log_debug("if_join_group: type %s not supported, interface %s", | |||
| 755 | if_type_name(iface->type), iface->name); | |||
| 756 | return (-1); | |||
| 757 | default: | |||
| 758 | fatalx("if_join_group: unknown interface type"); | |||
| 759 | } | |||
| 760 | ||||
| 761 | return (0); | |||
| 762 | } | |||
| 763 | ||||
| 764 | int | |||
| 765 | if_leave_group(struct iface *iface, struct in6_addr *addr) | |||
| 766 | { | |||
| 767 | struct ipv6_mreq mreq; | |||
| 768 | ||||
| 769 | switch (iface->type) { | |||
| 770 | case IF_TYPE_POINTOPOINT: | |||
| 771 | case IF_TYPE_BROADCAST: | |||
| 772 | log_debug("if_leave_group: interface %s addr %s", | |||
| 773 | iface->name, log_in6addr(addr)); | |||
| 774 | mreq.ipv6mr_multiaddr = *addr; | |||
| 775 | mreq.ipv6mr_interface = iface->ifindex; | |||
| 776 | ||||
| 777 | if (setsockopt(iface->fd, IPPROTO_IPV641, IPV6_LEAVE_GROUP13, | |||
| 778 | (void *)&mreq, sizeof(mreq)) == -1) { | |||
| 779 | log_warn("if_leave_group: error IPV6_LEAVE_GROUP, " | |||
| 780 | "interface %s address %s", iface->name, | |||
| 781 | log_in6addr(addr)); | |||
| 782 | return (-1); | |||
| 783 | } | |||
| 784 | break; | |||
| 785 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 786 | case IF_TYPE_VIRTUALLINK: | |||
| 787 | case IF_TYPE_NBMA: | |||
| 788 | log_debug("if_leave_group: type %s not supported, interface %s", | |||
| 789 | if_type_name(iface->type), iface->name); | |||
| 790 | return (-1); | |||
| 791 | default: | |||
| 792 | fatalx("if_leave_group: unknown interface type"); | |||
| 793 | } | |||
| 794 | return (0); | |||
| 795 | } | |||
| 796 | ||||
| 797 | int | |||
| 798 | if_set_mcast(struct iface *iface) | |||
| 799 | { | |||
| 800 | switch (iface->type) { | |||
| 801 | case IF_TYPE_POINTOPOINT: | |||
| 802 | case IF_TYPE_BROADCAST: | |||
| 803 | if (setsockopt(iface->fd, IPPROTO_IPV641, IPV6_MULTICAST_IF9, | |||
| 804 | &iface->ifindex, sizeof(iface->ifindex)) == -1) { | |||
| 805 | log_debug("if_set_mcast: error setting " | |||
| 806 | "IP_MULTICAST_IF, interface %s", iface->name); | |||
| 807 | return (-1); | |||
| 808 | } | |||
| 809 | break; | |||
| 810 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 811 | case IF_TYPE_VIRTUALLINK: | |||
| 812 | case IF_TYPE_NBMA: | |||
| 813 | log_debug("if_set_mcast: type %s not supported, interface %s", | |||
| 814 | if_type_name(iface->type), iface->name); | |||
| 815 | return (-1); | |||
| 816 | default: | |||
| 817 | fatalx("if_set_mcast: unknown interface type"); | |||
| 818 | } | |||
| 819 | ||||
| 820 | return (0); | |||
| 821 | } | |||
| 822 | ||||
| 823 | int | |||
| 824 | if_set_mcast_loop(int fd) | |||
| 825 | { | |||
| 826 | u_int loop = 0; | |||
| 827 | ||||
| 828 | if (setsockopt(fd, IPPROTO_IPV641, IPV6_MULTICAST_LOOP11, | |||
| 829 | (u_int *)&loop, sizeof(loop)) == -1) { | |||
| 830 | log_warn("if_set_mcast_loop: error setting " | |||
| 831 | "IPV6_MULTICAST_LOOP"); | |||
| 832 | return (-1); | |||
| 833 | } | |||
| 834 | ||||
| 835 | return (0); | |||
| 836 | } | |||
| 837 | ||||
| 838 | int | |||
| 839 | if_set_ipv6_pktinfo(int fd, int enable) | |||
| 840 | { | |||
| 841 | if (setsockopt(fd, IPPROTO_IPV641, IPV6_RECVPKTINFO36, &enable, | |||
| 842 | sizeof(enable)) == -1) { | |||
| 843 | log_warn("if_set_ipv6_pktinfo: error setting IPV6_PKTINFO"); | |||
| 844 | return (-1); | |||
| 845 | } | |||
| 846 | ||||
| 847 | return (0); | |||
| 848 | } | |||
| 849 | ||||
| 850 | int | |||
| 851 | if_set_ipv6_checksum(int fd) | |||
| 852 | { | |||
| 853 | int offset = offsetof(struct ospf_hdr, chksum)__builtin_offsetof(struct ospf_hdr, chksum); | |||
| 854 | ||||
| 855 | log_debug("if_set_ipv6_checksum setting cksum offset to %d", offset); | |||
| 856 | if (setsockopt(fd, IPPROTO_IPV641, IPV6_CHECKSUM26, &offset, | |||
| 857 | sizeof(offset)) == -1) { | |||
| 858 | log_warn("if_set_ipv6_checksum: error setting IPV6_CHECKSUM"); | |||
| 859 | return (-1); | |||
| 860 | } | |||
| 861 | return (0); | |||
| 862 | } |