| File: | src/usr.sbin/ospfd/interface.c |
| Warning: | line 771, column 26 Use of memory after it is freed |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: interface.c,v 1.86 2021/01/16 08:03:55 claudio Exp $ */ | |||
| 2 | ||||
| 3 | /* | |||
| 4 | * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> | |||
| 5 | * Copyright (c) 2004, 2005 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 "ospfd.h" | |||
| 37 | #include "ospf.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 | static int vlink_cnt = 0; | |||
| 71 | ||||
| 72 | const char * const if_event_names[] = { | |||
| 73 | "NOTHING", | |||
| 74 | "UP", | |||
| 75 | "WAITTIMER", | |||
| 76 | "BACKUPSEEN", | |||
| 77 | "NEIGHBORCHANGE", | |||
| 78 | "LOOP", | |||
| 79 | "UNLOOP", | |||
| 80 | "DOWN" | |||
| 81 | }; | |||
| 82 | ||||
| 83 | const char * const if_action_names[] = { | |||
| 84 | "NOTHING", | |||
| 85 | "START", | |||
| 86 | "ELECT", | |||
| 87 | "RESET" | |||
| 88 | }; | |||
| 89 | ||||
| 90 | int | |||
| 91 | if_fsm(struct iface *iface, enum iface_event event) | |||
| 92 | { | |||
| 93 | int old_state; | |||
| 94 | int new_state = 0; | |||
| 95 | int i, ret = 0; | |||
| 96 | ||||
| 97 | old_state = iface->state; | |||
| 98 | ||||
| 99 | for (i = 0; iface_fsm[i].state != -1; i++) | |||
| 100 | if ((iface_fsm[i].state & old_state) && | |||
| 101 | (iface_fsm[i].event == event)) { | |||
| 102 | new_state = iface_fsm[i].new_state; | |||
| 103 | break; | |||
| 104 | } | |||
| 105 | ||||
| 106 | if (iface_fsm[i].state == -1) { | |||
| 107 | /* event outside of the defined fsm, ignore it. */ | |||
| 108 | log_debug("if_fsm: interface %s, " | |||
| 109 | "event %s not expected in state %s", iface->name, | |||
| 110 | if_event_names[event], if_state_name(old_state)); | |||
| 111 | return (0); | |||
| 112 | } | |||
| 113 | ||||
| 114 | switch (iface_fsm[i].action) { | |||
| 115 | case IF_ACT_STRT: | |||
| 116 | ret = if_act_start(iface); | |||
| 117 | break; | |||
| 118 | case IF_ACT_ELECT: | |||
| 119 | ret = if_act_elect(iface); | |||
| 120 | break; | |||
| 121 | case IF_ACT_RST: | |||
| 122 | ret = if_act_reset(iface); | |||
| 123 | break; | |||
| 124 | case IF_ACT_NOTHING: | |||
| 125 | /* do nothing */ | |||
| 126 | break; | |||
| 127 | } | |||
| 128 | ||||
| 129 | if (ret) { | |||
| 130 | log_debug("if_fsm: error changing state for interface %s, " | |||
| 131 | "event %s, state %s", iface->name, if_event_names[event], | |||
| 132 | if_state_name(old_state)); | |||
| 133 | return (-1); | |||
| 134 | } | |||
| 135 | ||||
| 136 | if (new_state != 0) | |||
| 137 | iface->state = new_state; | |||
| 138 | ||||
| 139 | if (iface->state != old_state) { | |||
| 140 | area_track(iface->area); | |||
| 141 | orig_rtr_lsa(iface->area); | |||
| 142 | } | |||
| 143 | ||||
| 144 | if (old_state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08) && | |||
| 145 | (iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0) | |||
| 146 | ospfe_demote_iface(iface, 0); | |||
| 147 | if ((old_state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0 && | |||
| 148 | iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) | |||
| 149 | ospfe_demote_iface(iface, 1); | |||
| 150 | ||||
| 151 | log_debug("if_fsm: event %s resulted in action %s and changing " | |||
| 152 | "state for interface %s from %s to %s", | |||
| 153 | if_event_names[event], if_action_names[iface_fsm[i].action], | |||
| 154 | iface->name, if_state_name(old_state), if_state_name(iface->state)); | |||
| 155 | ||||
| 156 | return (ret); | |||
| 157 | } | |||
| 158 | ||||
| 159 | struct iface * | |||
| 160 | if_new(struct kif *kif, struct kif_addr *ka) | |||
| 161 | { | |||
| 162 | struct iface *iface; | |||
| 163 | ||||
| 164 | if ((iface = calloc(1, sizeof(*iface))) == NULL((void*)0)) | |||
| 165 | err(1, "if_new: calloc"); | |||
| 166 | ||||
| 167 | iface->state = IF_STA_DOWN0x01; | |||
| 168 | ||||
| 169 | LIST_INIT(&iface->nbr_list)do { ((&iface->nbr_list)->lh_first) = ((void*)0); } while (0); | |||
| 170 | 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); | |||
| 171 | TAILQ_INIT(&iface->auth_md_list)do { (&iface->auth_md_list)->tqh_first = ((void*)0) ; (&iface->auth_md_list)->tqh_last = &(&iface ->auth_md_list)->tqh_first; } while (0); | |||
| 172 | RB_INIT(&iface->lsa_tree)do { (&iface->lsa_tree)->rbh_root = ((void*)0); } while (0); | |||
| 173 | ||||
| 174 | iface->crypt_seq_num = arc4random() & 0x0fffffff; | |||
| 175 | ||||
| 176 | if (kif == NULL((void*)0)) { | |||
| 177 | iface->type = IF_TYPE_VIRTUALLINK; | |||
| 178 | snprintf(iface->name, sizeof(iface->name), "vlink%d", | |||
| 179 | vlink_cnt++); | |||
| 180 | iface->flags |= IFF_UP0x1; | |||
| 181 | iface->mtu = IP_MSS576; | |||
| 182 | return (iface); | |||
| 183 | } | |||
| 184 | ||||
| 185 | strlcpy(iface->name, kif->ifname, sizeof(iface->name)); | |||
| 186 | ||||
| 187 | /* get type */ | |||
| 188 | if (kif->flags & IFF_POINTOPOINT0x10) | |||
| 189 | iface->type = IF_TYPE_POINTOPOINT; | |||
| 190 | if (kif->flags & IFF_BROADCAST0x2 && | |||
| 191 | kif->flags & IFF_MULTICAST0x8000) | |||
| 192 | iface->type = IF_TYPE_BROADCAST; | |||
| 193 | if (kif->flags & IFF_LOOPBACK0x8) { | |||
| 194 | iface->type = IF_TYPE_POINTOPOINT; | |||
| 195 | iface->passive = 1; | |||
| 196 | } | |||
| 197 | ||||
| 198 | /* get mtu, index and flags */ | |||
| 199 | iface->mtu = kif->mtu; | |||
| 200 | iface->ifindex = kif->ifindex; | |||
| 201 | iface->rdomain = kif->rdomain; | |||
| 202 | iface->flags = kif->flags; | |||
| 203 | iface->linkstate = kif->link_state; | |||
| 204 | iface->if_type = kif->if_type; | |||
| 205 | iface->baudrate = kif->baudrate; | |||
| 206 | ||||
| 207 | /* set address, mask and p2p addr */ | |||
| 208 | iface->addr = ka->addr; | |||
| 209 | iface->mask = ka->mask; | |||
| 210 | if (kif->flags & IFF_POINTOPOINT0x10) { | |||
| 211 | iface->dst = ka->dstbrd; | |||
| 212 | } | |||
| 213 | ||||
| 214 | return (iface); | |||
| 215 | } | |||
| 216 | ||||
| 217 | void | |||
| 218 | if_del(struct iface *iface) | |||
| 219 | { | |||
| 220 | struct nbr *nbr = NULL((void*)0); | |||
| 221 | ||||
| 222 | /* revert the demotion when the interface is deleted */ | |||
| 223 | if ((iface->state & (IF_STA_MULTI(0x10 | 0x20 | 0x40) | IF_STA_POINTTOPOINT0x08)) == 0) | |||
| 224 | ospfe_demote_iface(iface, 1); | |||
| 225 | ||||
| 226 | /* clear lists etc */ | |||
| 227 | while ((nbr = LIST_FIRST(&iface->nbr_list)((&iface->nbr_list)->lh_first)) != NULL((void*)0)) | |||
| 228 | nbr_del(nbr); | |||
| 229 | ||||
| 230 | if (evtimer_pending(&iface->hello_timer, NULL)event_pending(&iface->hello_timer, 0x01, ((void*)0))) | |||
| 231 | evtimer_del(&iface->hello_timer)event_del(&iface->hello_timer); | |||
| 232 | if (evtimer_pending(&iface->wait_timer, NULL)event_pending(&iface->wait_timer, 0x01, ((void*)0))) | |||
| 233 | evtimer_del(&iface->wait_timer)event_del(&iface->wait_timer); | |||
| 234 | if (evtimer_pending(&iface->lsack_tx_timer, NULL)event_pending(&iface->lsack_tx_timer, 0x01, ((void*)0) )) | |||
| 235 | evtimer_del(&iface->lsack_tx_timer)event_del(&iface->lsack_tx_timer); | |||
| 236 | ||||
| 237 | ls_ack_list_clr(iface); | |||
| 238 | md_list_clr(&iface->auth_md_list); | |||
| 239 | free(iface); | |||
| 240 | } | |||
| 241 | ||||
| 242 | void | |||
| 243 | if_init(struct ospfd_conf *xconf, struct iface *iface) | |||
| 244 | { | |||
| 245 | /* init the dummy local neighbor */ | |||
| 246 | iface->self = nbr_new(ospfe_router_id(), iface, 1); | |||
| 247 | ||||
| 248 | /* set event handlers for interface */ | |||
| 249 | evtimer_set(&iface->lsack_tx_timer, ls_ack_tx_timer, iface)event_set(&iface->lsack_tx_timer, -1, 0, ls_ack_tx_timer , iface); | |||
| 250 | evtimer_set(&iface->hello_timer, if_hello_timer, iface)event_set(&iface->hello_timer, -1, 0, if_hello_timer, iface ); | |||
| 251 | evtimer_set(&iface->wait_timer, if_wait_timer, iface)event_set(&iface->wait_timer, -1, 0, if_wait_timer, iface ); | |||
| 252 | ||||
| 253 | iface->fd = xconf->ospf_socket; | |||
| 254 | ||||
| 255 | ospfe_demote_iface(iface, 0); | |||
| 256 | } | |||
| 257 | ||||
| 258 | /* timers */ | |||
| 259 | /* ARGSUSED */ | |||
| 260 | void | |||
| 261 | if_hello_timer(int fd, short event, void *arg) | |||
| 262 | { | |||
| 263 | struct iface *iface = arg; | |||
| 264 | struct timeval tv; | |||
| 265 | ||||
| 266 | send_hello(iface); | |||
| 267 | ||||
| 268 | /* reschedule hello_timer */ | |||
| 269 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 270 | if (iface->dead_interval == FAST_RTR_DEAD_TIME1) | |||
| 271 | tv.tv_usec = iface->fast_hello_interval * 1000; | |||
| 272 | else | |||
| 273 | tv.tv_sec = iface->hello_interval; | |||
| 274 | if (evtimer_add(&iface->hello_timer, &tv)event_add(&iface->hello_timer, &tv) == -1) | |||
| 275 | fatal("if_hello_timer"); | |||
| 276 | } | |||
| 277 | ||||
| 278 | void | |||
| 279 | if_start_hello_timer(struct iface *iface) | |||
| 280 | { | |||
| 281 | struct timeval tv; | |||
| 282 | ||||
| 283 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 284 | if (evtimer_add(&iface->hello_timer, &tv)event_add(&iface->hello_timer, &tv) == -1) | |||
| 285 | fatal("if_start_hello_timer"); | |||
| 286 | } | |||
| 287 | ||||
| 288 | void | |||
| 289 | if_stop_hello_timer(struct iface *iface) | |||
| 290 | { | |||
| 291 | if (evtimer_del(&iface->hello_timer)event_del(&iface->hello_timer) == -1) | |||
| 292 | fatal("if_stop_hello_timer"); | |||
| 293 | } | |||
| 294 | ||||
| 295 | /* ARGSUSED */ | |||
| 296 | void | |||
| 297 | if_wait_timer(int fd, short event, void *arg) | |||
| 298 | { | |||
| 299 | struct iface *iface = arg; | |||
| 300 | ||||
| 301 | if_fsm(iface, IF_EVT_WTIMER); | |||
| ||||
| 302 | } | |||
| 303 | ||||
| 304 | void | |||
| 305 | if_start_wait_timer(struct iface *iface) | |||
| 306 | { | |||
| 307 | struct timeval tv; | |||
| 308 | ||||
| 309 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 310 | tv.tv_sec = iface->dead_interval; | |||
| 311 | if (evtimer_add(&iface->wait_timer, &tv)event_add(&iface->wait_timer, &tv) == -1) | |||
| 312 | fatal("if_start_wait_timer"); | |||
| 313 | } | |||
| 314 | ||||
| 315 | void | |||
| 316 | if_stop_wait_timer(struct iface *iface) | |||
| 317 | { | |||
| 318 | if (evtimer_del(&iface->wait_timer)event_del(&iface->wait_timer) == -1) | |||
| 319 | fatal("if_stop_wait_timer"); | |||
| 320 | } | |||
| 321 | ||||
| 322 | /* actions */ | |||
| 323 | int | |||
| 324 | if_act_start(struct iface *iface) | |||
| 325 | { | |||
| 326 | struct in_addr addr; | |||
| 327 | struct timeval now; | |||
| 328 | ||||
| 329 | if (!(iface->flags & IFF_UP0x1) || | |||
| 330 | (!LINK_STATE_IS_UP(iface->linkstate)((iface->linkstate) >= 4 || (iface->linkstate) == 0) && | |||
| 331 | !(iface->if_type == IFT_CARP0xf7 && | |||
| 332 | iface->linkstate == LINK_STATE_DOWN2))) | |||
| 333 | return (0); | |||
| 334 | ||||
| 335 | if (iface->if_type == IFT_CARP0xf7 && iface->passive == 0) { | |||
| 336 | /* force passive mode on carp interfaces */ | |||
| 337 | log_warnx("if_act_start: forcing interface %s to passive", | |||
| 338 | iface->name); | |||
| 339 | iface->passive = 1; | |||
| 340 | } | |||
| 341 | ||||
| 342 | gettimeofday(&now, NULL((void*)0)); | |||
| 343 | iface->uptime = now.tv_sec; | |||
| 344 | ||||
| 345 | /* loopback interfaces have a special state and are passive */ | |||
| 346 | if (iface->flags & IFF_LOOPBACK0x8) | |||
| 347 | iface->state = IF_STA_LOOPBACK0x02; | |||
| 348 | ||||
| 349 | if (iface->passive) { | |||
| 350 | /* for an update of stub network entries */ | |||
| 351 | orig_rtr_lsa(iface->area); | |||
| 352 | return (0); | |||
| 353 | } | |||
| 354 | ||||
| 355 | switch (iface->type) { | |||
| 356 | case IF_TYPE_POINTOPOINT: | |||
| 357 | inet_aton(AllSPFRouters"224.0.0.5", &addr); | |||
| 358 | if (if_join_group(iface, &addr)) | |||
| 359 | return (-1); | |||
| 360 | iface->state = IF_STA_POINTTOPOINT0x08; | |||
| 361 | break; | |||
| 362 | case IF_TYPE_VIRTUALLINK: | |||
| 363 | iface->state = IF_STA_POINTTOPOINT0x08; | |||
| 364 | break; | |||
| 365 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 366 | case IF_TYPE_NBMA: | |||
| 367 | log_debug("if_act_start: type %s not supported, interface %s", | |||
| 368 | if_type_name(iface->type), iface->name); | |||
| 369 | return (-1); | |||
| 370 | case IF_TYPE_BROADCAST: | |||
| 371 | inet_aton(AllSPFRouters"224.0.0.5", &addr); | |||
| 372 | if (if_join_group(iface, &addr)) | |||
| 373 | return (-1); | |||
| 374 | if (iface->priority == 0) { | |||
| 375 | iface->state = IF_STA_DROTHER0x10; | |||
| 376 | } else { | |||
| 377 | iface->state = IF_STA_WAITING0x04; | |||
| 378 | if_start_wait_timer(iface); | |||
| 379 | } | |||
| 380 | break; | |||
| 381 | default: | |||
| 382 | fatalx("if_act_start: unknown interface type"); | |||
| 383 | } | |||
| 384 | ||||
| 385 | /* hello timer needs to be started in any case */ | |||
| 386 | if_start_hello_timer(iface); | |||
| 387 | return (0); | |||
| 388 | } | |||
| 389 | ||||
| 390 | struct nbr * | |||
| 391 | if_elect(struct nbr *a, struct nbr *b) | |||
| 392 | { | |||
| 393 | if (a->priority > b->priority) | |||
| 394 | return (a); | |||
| 395 | if (a->priority < b->priority) | |||
| 396 | return (b); | |||
| 397 | 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))) | |||
| 398 | return (a); | |||
| 399 | return (b); | |||
| 400 | } | |||
| 401 | ||||
| 402 | int | |||
| 403 | if_act_elect(struct iface *iface) | |||
| 404 | { | |||
| 405 | struct in_addr addr; | |||
| 406 | struct nbr *nbr, *bdr = NULL((void*)0), *dr = NULL((void*)0); | |||
| 407 | int round = 0; | |||
| 408 | int changed = 0; | |||
| 409 | int old_state; | |||
| 410 | char b1[16], b2[16], b3[16], b4[16]; | |||
| 411 | ||||
| 412 | start: | |||
| 413 | /* elect backup designated router */ | |||
| 414 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void*)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 415 | if (nbr->priority == 0 || nbr == dr || /* not electable */ | |||
| 416 | nbr->state & NBR_STA_PRELIM(0x0001 | 0x0002 | 0x0004) || /* not available */ | |||
| 417 | nbr->dr.s_addr == nbr->addr.s_addr) /* don't elect DR */ | |||
| 418 | continue; | |||
| 419 | if (bdr != NULL((void*)0)) { | |||
| 420 | /* | |||
| 421 | * routers announcing themselves as BDR have higher | |||
| 422 | * precedence over those routers announcing a | |||
| 423 | * different BDR. | |||
| 424 | */ | |||
| 425 | if (nbr->bdr.s_addr == nbr->addr.s_addr) { | |||
| 426 | if (bdr->bdr.s_addr == bdr->addr.s_addr) | |||
| 427 | bdr = if_elect(bdr, nbr); | |||
| 428 | else | |||
| 429 | bdr = nbr; | |||
| 430 | } else if (bdr->bdr.s_addr != bdr->addr.s_addr) | |||
| 431 | bdr = if_elect(bdr, nbr); | |||
| 432 | } else | |||
| 433 | bdr = nbr; | |||
| 434 | } | |||
| 435 | ||||
| 436 | /* elect designated router */ | |||
| 437 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void*)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 438 | if (nbr->priority == 0 || nbr->state & NBR_STA_PRELIM(0x0001 | 0x0002 | 0x0004) || | |||
| 439 | (nbr != dr && nbr->dr.s_addr != nbr->addr.s_addr)) | |||
| 440 | /* only DR may be elected check priority too */ | |||
| 441 | continue; | |||
| 442 | if (dr == NULL((void*)0)) | |||
| 443 | dr = nbr; | |||
| 444 | else | |||
| 445 | dr = if_elect(dr, nbr); | |||
| 446 | } | |||
| 447 | ||||
| 448 | if (dr == NULL((void*)0)) { | |||
| 449 | /* no designated router found use backup DR */ | |||
| 450 | dr = bdr; | |||
| 451 | bdr = NULL((void*)0); | |||
| 452 | } | |||
| 453 | ||||
| 454 | /* | |||
| 455 | * if we are involved in the election (e.g. new DR or no | |||
| 456 | * longer BDR) redo the election | |||
| 457 | */ | |||
| 458 | if (round == 0 && | |||
| 459 | ((iface->self == dr && iface->self != iface->dr) || | |||
| 460 | (iface->self != dr && iface->self == iface->dr) || | |||
| 461 | (iface->self == bdr && iface->self != iface->bdr) || | |||
| 462 | (iface->self != bdr && iface->self == iface->bdr))) { | |||
| 463 | /* | |||
| 464 | * Reset announced DR/BDR to calculated one, so | |||
| 465 | * that we may get elected in the second round. | |||
| 466 | * This is needed to drop from a DR to a BDR. | |||
| 467 | */ | |||
| 468 | iface->self->dr.s_addr = dr->addr.s_addr; | |||
| 469 | if (bdr) | |||
| 470 | iface->self->bdr.s_addr = bdr->addr.s_addr; | |||
| 471 | round = 1; | |||
| 472 | goto start; | |||
| 473 | } | |||
| 474 | ||||
| 475 | log_debug("if_act_elect: interface %s old dr %s new dr %s, " | |||
| 476 | "old bdr %s new bdr %s", iface->name, | |||
| 477 | iface->dr ? inet_ntop(AF_INET2, &iface->dr->addr, b1, sizeof(b1)) : | |||
| 478 | "none", dr ? inet_ntop(AF_INET2, &dr->addr, b2, sizeof(b2)) : "none", | |||
| 479 | iface->bdr ? inet_ntop(AF_INET2, &iface->bdr->addr, b3, sizeof(b3)) : | |||
| 480 | "none", bdr ? inet_ntop(AF_INET2, &bdr->addr, b4, sizeof(b4)) : | |||
| 481 | "none"); | |||
| 482 | ||||
| 483 | /* | |||
| 484 | * After the second round still DR or BDR change state to DR or BDR, | |||
| 485 | * etc. | |||
| 486 | */ | |||
| 487 | old_state = iface->state; | |||
| 488 | if (dr == iface->self) | |||
| 489 | iface->state = IF_STA_DR0x40; | |||
| 490 | else if (bdr == iface->self) | |||
| 491 | iface->state = IF_STA_BACKUP0x20; | |||
| 492 | else | |||
| 493 | iface->state = IF_STA_DROTHER0x10; | |||
| 494 | ||||
| 495 | /* TODO if iface is NBMA send all non eligible neighbors event Start */ | |||
| 496 | ||||
| 497 | /* | |||
| 498 | * if DR or BDR changed issue a AdjOK? event for all neighbors > 2-Way | |||
| 499 | */ | |||
| 500 | if (iface->dr != dr || iface->bdr != bdr) | |||
| 501 | changed = 1; | |||
| 502 | ||||
| 503 | iface->dr = dr; | |||
| 504 | iface->bdr = bdr; | |||
| 505 | ||||
| 506 | if (changed) { | |||
| 507 | inet_aton(AllDRouters"224.0.0.6", &addr); | |||
| 508 | if (old_state & IF_STA_DRORBDR(0x40 | 0x20) && | |||
| 509 | (iface->state & IF_STA_DRORBDR(0x40 | 0x20)) == 0) { | |||
| 510 | if (if_leave_group(iface, &addr)) | |||
| 511 | return (-1); | |||
| 512 | } else if ((old_state & IF_STA_DRORBDR(0x40 | 0x20)) == 0 && | |||
| 513 | iface->state & IF_STA_DRORBDR(0x40 | 0x20)) { | |||
| 514 | if (if_join_group(iface, &addr)) | |||
| 515 | return (-1); | |||
| 516 | } | |||
| 517 | ||||
| 518 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void*)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 519 | if (nbr->state & NBR_STA_BIDIR(0x0008 | (0x0010 | 0x0020 | (0x0040 | 0x0080 | 0x0100)))) | |||
| 520 | nbr_fsm(nbr, NBR_EVT_ADJ_OK); | |||
| 521 | } | |||
| 522 | ||||
| 523 | orig_rtr_lsa(iface->area); | |||
| 524 | if (iface->state & IF_STA_DR0x40 || old_state & IF_STA_DR0x40) | |||
| 525 | orig_net_lsa(iface); | |||
| 526 | } | |||
| 527 | ||||
| 528 | if_start_hello_timer(iface); | |||
| 529 | return (0); | |||
| 530 | } | |||
| 531 | ||||
| 532 | int | |||
| 533 | if_act_reset(struct iface *iface) | |||
| 534 | { | |||
| 535 | struct nbr *nbr = NULL((void*)0); | |||
| 536 | struct in_addr addr; | |||
| 537 | ||||
| 538 | if (iface->passive) { | |||
| 539 | /* for an update of stub network entries */ | |||
| 540 | orig_rtr_lsa(iface->area); | |||
| 541 | return (0); | |||
| 542 | } | |||
| 543 | ||||
| 544 | switch (iface->type) { | |||
| 545 | case IF_TYPE_POINTOPOINT: | |||
| 546 | case IF_TYPE_BROADCAST: | |||
| 547 | /* try to cleanup */ | |||
| 548 | inet_aton(AllSPFRouters"224.0.0.5", &addr); | |||
| 549 | if_leave_group(iface, &addr); | |||
| 550 | if (iface->state & IF_STA_DRORBDR(0x40 | 0x20)) { | |||
| 551 | inet_aton(AllDRouters"224.0.0.6", &addr); | |||
| 552 | if_leave_group(iface, &addr); | |||
| 553 | } | |||
| 554 | break; | |||
| 555 | case IF_TYPE_VIRTUALLINK: | |||
| 556 | /* nothing */ | |||
| 557 | break; | |||
| 558 | case IF_TYPE_NBMA: | |||
| 559 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 560 | log_debug("if_act_reset: type %s not supported, interface %s", | |||
| 561 | if_type_name(iface->type), iface->name); | |||
| 562 | return (-1); | |||
| 563 | default: | |||
| 564 | fatalx("if_act_reset: unknown interface type"); | |||
| 565 | } | |||
| 566 | ||||
| 567 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void*)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 568 | if (nbr_fsm(nbr, NBR_EVT_KILL_NBR)) { | |||
| 569 | log_debug("if_act_reset: error killing neighbor %s", | |||
| 570 | inet_ntoa(nbr->id)); | |||
| 571 | } | |||
| 572 | } | |||
| 573 | ||||
| 574 | iface->dr = NULL((void*)0); | |||
| 575 | iface->bdr = NULL((void*)0); | |||
| 576 | ||||
| 577 | ls_ack_list_clr(iface); | |||
| 578 | stop_ls_ack_tx_timer(iface); | |||
| 579 | if_stop_hello_timer(iface); | |||
| 580 | if_stop_wait_timer(iface); | |||
| 581 | ||||
| 582 | /* send empty hello to tell everybody that we are going down */ | |||
| 583 | send_hello(iface); | |||
| 584 | ||||
| 585 | return (0); | |||
| 586 | } | |||
| 587 | ||||
| 588 | struct ctl_iface * | |||
| 589 | if_to_ctl(struct iface *iface) | |||
| 590 | { | |||
| 591 | static struct ctl_iface ictl; | |||
| 592 | struct timeval tv, now, res; | |||
| 593 | struct nbr *nbr; | |||
| 594 | ||||
| 595 | memcpy(ictl.name, iface->name, sizeof(ictl.name)); | |||
| 596 | memcpy(&ictl.addr, &iface->addr, sizeof(ictl.addr)); | |||
| 597 | memcpy(&ictl.mask, &iface->mask, sizeof(ictl.mask)); | |||
| 598 | ictl.rtr_id.s_addr = ospfe_router_id(); | |||
| 599 | memcpy(&ictl.area, &iface->area->id, sizeof(ictl.area)); | |||
| 600 | if (iface->dr) { | |||
| 601 | memcpy(&ictl.dr_id, &iface->dr->id, sizeof(ictl.dr_id)); | |||
| 602 | memcpy(&ictl.dr_addr, &iface->dr->addr, sizeof(ictl.dr_addr)); | |||
| 603 | } else { | |||
| 604 | bzero(&ictl.dr_id, sizeof(ictl.dr_id)); | |||
| 605 | bzero(&ictl.dr_addr, sizeof(ictl.dr_addr)); | |||
| 606 | } | |||
| 607 | if (iface->bdr) { | |||
| 608 | memcpy(&ictl.bdr_id, &iface->bdr->id, sizeof(ictl.bdr_id)); | |||
| 609 | memcpy(&ictl.bdr_addr, &iface->bdr->addr, | |||
| 610 | sizeof(ictl.bdr_addr)); | |||
| 611 | } else { | |||
| 612 | bzero(&ictl.bdr_id, sizeof(ictl.bdr_id)); | |||
| 613 | bzero(&ictl.bdr_addr, sizeof(ictl.bdr_addr)); | |||
| 614 | } | |||
| 615 | ictl.ifindex = iface->ifindex; | |||
| 616 | ictl.state = iface->state; | |||
| 617 | ictl.mtu = iface->mtu; | |||
| 618 | ictl.nbr_cnt = 0; | |||
| 619 | ictl.adj_cnt = 0; | |||
| 620 | ictl.baudrate = iface->baudrate; | |||
| 621 | ictl.dead_interval = iface->dead_interval; | |||
| 622 | ictl.fast_hello_interval = iface->fast_hello_interval; | |||
| 623 | ictl.transmit_delay = iface->transmit_delay; | |||
| 624 | ictl.hello_interval = iface->hello_interval; | |||
| 625 | ictl.flags = iface->flags; | |||
| 626 | ictl.metric = iface->metric; | |||
| 627 | ictl.rxmt_interval = iface->rxmt_interval; | |||
| 628 | ictl.type = iface->type; | |||
| 629 | ictl.linkstate = iface->linkstate; | |||
| 630 | ictl.if_type = iface->if_type; | |||
| 631 | ictl.priority = iface->priority; | |||
| 632 | ictl.passive = iface->passive; | |||
| 633 | ictl.auth_type = iface->auth_type; | |||
| 634 | ictl.auth_keyid = iface->auth_keyid; | |||
| 635 | ||||
| 636 | memcpy(ictl.dependon, iface->dependon, sizeof(ictl.dependon)); | |||
| 637 | ictl.depend_ok = iface->depend_ok; | |||
| 638 | ||||
| 639 | gettimeofday(&now, NULL((void*)0)); | |||
| 640 | if (evtimer_pending(&iface->hello_timer, &tv)event_pending(&iface->hello_timer, 0x01, &tv)) { | |||
| 641 | 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); | |||
| 642 | ictl.hello_timer = res; | |||
| 643 | } else { | |||
| 644 | ictl.hello_timer.tv_sec = -1; | |||
| 645 | } | |||
| 646 | ||||
| 647 | if (iface->state != IF_STA_DOWN0x01 && | |||
| 648 | iface->uptime != 0) { | |||
| 649 | ictl.uptime = now.tv_sec - iface->uptime; | |||
| 650 | } else | |||
| 651 | ictl.uptime = 0; | |||
| 652 | ||||
| 653 | LIST_FOREACH(nbr, &iface->nbr_list, entry)for((nbr) = ((&iface->nbr_list)->lh_first); (nbr)!= ((void*)0); (nbr) = ((nbr)->entry.le_next)) { | |||
| 654 | if (nbr == iface->self) | |||
| 655 | continue; | |||
| 656 | ictl.nbr_cnt++; | |||
| 657 | if (nbr->state & NBR_STA_ADJFORM(0x0010 | 0x0020 | (0x0040 | 0x0080 | 0x0100))) | |||
| 658 | ictl.adj_cnt++; | |||
| 659 | } | |||
| 660 | ||||
| 661 | return (&ictl); | |||
| 662 | } | |||
| 663 | ||||
| 664 | /* misc */ | |||
| 665 | int | |||
| 666 | if_set_recvif(int fd, int enable) | |||
| 667 | { | |||
| 668 | if (setsockopt(fd, IPPROTO_IP0, IP_RECVIF30, &enable, | |||
| 669 | sizeof(enable)) == -1) { | |||
| 670 | log_warn("if_set_recvif: error setting IP_RECVIF"); | |||
| 671 | return (-1); | |||
| 672 | } | |||
| 673 | return (0); | |||
| 674 | } | |||
| 675 | ||||
| 676 | void | |||
| 677 | if_set_sockbuf(int fd) | |||
| 678 | { | |||
| 679 | int bsize; | |||
| 680 | ||||
| 681 | bsize = 256 * 1024; | |||
| 682 | while (setsockopt(fd, SOL_SOCKET0xffff, SO_RCVBUF0x1002, &bsize, | |||
| 683 | sizeof(bsize)) == -1) | |||
| 684 | bsize /= 2; | |||
| 685 | ||||
| 686 | if (bsize != 256 * 1024) | |||
| 687 | log_warnx("if_set_sockbuf: recvbuf size only %d", bsize); | |||
| 688 | ||||
| 689 | bsize = 64 * 1024; | |||
| 690 | while (setsockopt(fd, SOL_SOCKET0xffff, SO_SNDBUF0x1001, &bsize, | |||
| 691 | sizeof(bsize)) == -1) | |||
| 692 | bsize /= 2; | |||
| 693 | ||||
| 694 | if (bsize != 64 * 1024) | |||
| 695 | log_warnx("if_set_sockbuf: sendbuf size only %d", bsize); | |||
| 696 | } | |||
| 697 | ||||
| 698 | /* | |||
| 699 | * only one JOIN or DROP per interface and address is allowed so we need | |||
| 700 | * to keep track of what is added and removed. | |||
| 701 | */ | |||
| 702 | struct if_group_count { | |||
| 703 | LIST_ENTRY(if_group_count)struct { struct if_group_count *le_next; struct if_group_count **le_prev; } entry; | |||
| 704 | struct in_addr addr; | |||
| 705 | unsigned int ifindex; | |||
| 706 | int count; | |||
| 707 | }; | |||
| 708 | ||||
| 709 | LIST_HEAD(,if_group_count)struct { struct if_group_count *lh_first; } ifglist = LIST_HEAD_INITIALIZER(ifglist){ ((void*)0) }; | |||
| 710 | ||||
| 711 | int | |||
| 712 | if_join_group(struct iface *iface, struct in_addr *addr) | |||
| 713 | { | |||
| 714 | struct ip_mreqn mreq; | |||
| 715 | struct if_group_count *ifg; | |||
| 716 | ||||
| 717 | switch (iface->type) { | |||
| 718 | case IF_TYPE_POINTOPOINT: | |||
| 719 | case IF_TYPE_BROADCAST: | |||
| 720 | LIST_FOREACH(ifg, &ifglist, entry)for((ifg) = ((&ifglist)->lh_first); (ifg)!= ((void*)0) ; (ifg) = ((ifg)->entry.le_next)) | |||
| 721 | if (iface->ifindex == ifg->ifindex && | |||
| 722 | addr->s_addr == ifg->addr.s_addr) | |||
| 723 | break; | |||
| 724 | if (ifg == NULL((void*)0)) { | |||
| 725 | if ((ifg = calloc(1, sizeof(*ifg))) == NULL((void*)0)) | |||
| 726 | fatal("if_join_group"); | |||
| 727 | ifg->addr.s_addr = addr->s_addr; | |||
| 728 | ifg->ifindex = iface->ifindex; | |||
| 729 | LIST_INSERT_HEAD(&ifglist, ifg, entry)do { if (((ifg)->entry.le_next = (&ifglist)->lh_first ) != ((void*)0)) (&ifglist)->lh_first->entry.le_prev = &(ifg)->entry.le_next; (&ifglist)->lh_first = (ifg); (ifg)->entry.le_prev = &(&ifglist)->lh_first ; } while (0); | |||
| 730 | } | |||
| 731 | ||||
| 732 | if (ifg->count++ != 0) | |||
| 733 | /* already joined */ | |||
| 734 | return (0); | |||
| 735 | ||||
| 736 | memset(&mreq, 0, sizeof(mreq)); | |||
| 737 | mreq.imr_multiaddr.s_addr = addr->s_addr; | |||
| 738 | mreq.imr_ifindex = iface->ifindex; | |||
| 739 | ||||
| 740 | if (setsockopt(iface->fd, IPPROTO_IP0, IP_ADD_MEMBERSHIP12, | |||
| 741 | (void *)&mreq, sizeof(mreq)) == -1) { | |||
| 742 | log_warn("if_join_group: error IP_ADD_MEMBERSHIP, " | |||
| 743 | "interface %s address %s", iface->name, | |||
| 744 | inet_ntoa(*addr)); | |||
| 745 | return (-1); | |||
| 746 | } | |||
| 747 | break; | |||
| 748 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 749 | case IF_TYPE_VIRTUALLINK: | |||
| 750 | case IF_TYPE_NBMA: | |||
| 751 | log_debug("if_join_group: type %s not supported, interface %s", | |||
| 752 | if_type_name(iface->type), iface->name); | |||
| 753 | return (-1); | |||
| 754 | default: | |||
| 755 | fatalx("if_join_group: unknown interface type"); | |||
| 756 | } | |||
| 757 | ||||
| 758 | return (0); | |||
| 759 | } | |||
| 760 | ||||
| 761 | int | |||
| 762 | if_leave_group(struct iface *iface, struct in_addr *addr) | |||
| 763 | { | |||
| 764 | struct ip_mreqn mreq; | |||
| 765 | struct if_group_count *ifg; | |||
| 766 | ||||
| 767 | switch (iface->type) { | |||
| 768 | case IF_TYPE_POINTOPOINT: | |||
| 769 | case IF_TYPE_BROADCAST: | |||
| 770 | LIST_FOREACH(ifg, &ifglist, entry)for((ifg) = ((&ifglist)->lh_first); (ifg)!= ((void*)0) ; (ifg) = ((ifg)->entry.le_next)) | |||
| 771 | if (iface->ifindex == ifg->ifindex && | |||
| ||||
| 772 | addr->s_addr == ifg->addr.s_addr) | |||
| 773 | break; | |||
| 774 | ||||
| 775 | /* if interface is not found just try to drop membership */ | |||
| 776 | if (ifg
| |||
| 777 | if (--ifg->count != 0) | |||
| 778 | /* others still joined */ | |||
| 779 | return (0); | |||
| 780 | ||||
| 781 | LIST_REMOVE(ifg, entry)do { if ((ifg)->entry.le_next != ((void*)0)) (ifg)->entry .le_next->entry.le_prev = (ifg)->entry.le_prev; *(ifg)-> entry.le_prev = (ifg)->entry.le_next; ; ; } while (0); | |||
| 782 | free(ifg); | |||
| 783 | } | |||
| 784 | ||||
| 785 | memset(&mreq, 0, sizeof(mreq)); | |||
| 786 | mreq.imr_multiaddr.s_addr = addr->s_addr; | |||
| 787 | mreq.imr_ifindex = iface->ifindex; | |||
| 788 | ||||
| 789 | if (setsockopt(iface->fd, IPPROTO_IP0, IP_DROP_MEMBERSHIP13, | |||
| 790 | (void *)&mreq, sizeof(mreq)) == -1) { | |||
| 791 | log_warn("if_leave_group: error IP_DROP_MEMBERSHIP, " | |||
| 792 | "interface %s address %s", iface->name, | |||
| 793 | inet_ntoa(*addr)); | |||
| 794 | return (-1); | |||
| 795 | } | |||
| 796 | break; | |||
| 797 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 798 | case IF_TYPE_VIRTUALLINK: | |||
| 799 | case IF_TYPE_NBMA: | |||
| 800 | log_debug("if_leave_group: type %s not supported, interface %s", | |||
| 801 | if_type_name(iface->type), iface->name); | |||
| 802 | return (-1); | |||
| 803 | default: | |||
| 804 | fatalx("if_leave_group: unknown interface type"); | |||
| 805 | } | |||
| 806 | ||||
| 807 | return (0); | |||
| 808 | } | |||
| 809 | ||||
| 810 | int | |||
| 811 | if_set_mcast(struct iface *iface) | |||
| 812 | { | |||
| 813 | struct ip_mreqn mreq; | |||
| 814 | ||||
| 815 | switch (iface->type) { | |||
| 816 | case IF_TYPE_POINTOPOINT: | |||
| 817 | case IF_TYPE_BROADCAST: | |||
| 818 | memset(&mreq, 0, sizeof(mreq)); | |||
| 819 | mreq.imr_ifindex = iface->ifindex; | |||
| 820 | if (setsockopt(iface->fd, IPPROTO_IP0, IP_MULTICAST_IF9, | |||
| 821 | &mreq, sizeof(mreq)) == -1) { | |||
| 822 | log_warn("if_set_mcast: error setting " | |||
| 823 | "IP_MULTICAST_IF, interface %s", iface->name); | |||
| 824 | return (-1); | |||
| 825 | } | |||
| 826 | break; | |||
| 827 | case IF_TYPE_POINTOMULTIPOINT: | |||
| 828 | case IF_TYPE_VIRTUALLINK: | |||
| 829 | case IF_TYPE_NBMA: | |||
| 830 | log_debug("if_set_mcast: type %s not supported, interface %s", | |||
| 831 | if_type_name(iface->type), iface->name); | |||
| 832 | return (-1); | |||
| 833 | default: | |||
| 834 | fatalx("if_set_mcast: unknown interface type"); | |||
| 835 | } | |||
| 836 | ||||
| 837 | return (0); | |||
| 838 | } | |||
| 839 | ||||
| 840 | int | |||
| 841 | if_set_mcast_loop(int fd) | |||
| 842 | { | |||
| 843 | u_int8_t loop = 0; | |||
| 844 | ||||
| 845 | if (setsockopt(fd, IPPROTO_IP0, IP_MULTICAST_LOOP11, | |||
| 846 | (char *)&loop, sizeof(loop)) == -1) { | |||
| 847 | log_warn("if_set_mcast_loop: error setting IP_MULTICAST_LOOP"); | |||
| 848 | return (-1); | |||
| 849 | } | |||
| 850 | ||||
| 851 | return (0); | |||
| 852 | } | |||
| 853 | ||||
| 854 | int | |||
| 855 | if_set_ip_hdrincl(int fd) | |||
| 856 | { | |||
| 857 | int hincl = 1; | |||
| 858 | ||||
| 859 | if (setsockopt(fd, IPPROTO_IP0, IP_HDRINCL2, &hincl, sizeof(hincl)) == -1) { | |||
| 860 | log_warn("if_set_ip_hdrincl: error setting IP_HDRINCL"); | |||
| 861 | return (-1); | |||
| 862 | } | |||
| 863 | ||||
| 864 | return (0); | |||
| 865 | } |