Annotation of embedaddon/bird2/proto/ospf/iface.c, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- OSPF
! 3: *
! 4: * (c) 1999--2005 Ondrej Filip <feela@network.cz>
! 5: * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org>
! 6: * (c) 2009--2014 CZ.NIC z.s.p.o.
! 7: *
! 8: * Can be freely distributed and used under the terms of the GNU GPL.
! 9: */
! 10:
! 11: #include "ospf.h"
! 12: #include "nest/password.h"
! 13:
! 14:
! 15: const char *ospf_is_names[] = {
! 16: "Down", "Loopback", "Waiting", "PtP", "DROther", "Backup", "DR"
! 17: };
! 18:
! 19: const char *ospf_ism_names[] = {
! 20: "InterfaceUp", "WaitTimer", "BackupSeen", "NeighborChange",
! 21: "LoopInd", "UnloopInd", "InterfaceDown"
! 22: };
! 23:
! 24: const char *ospf_it[] = { "broadcast", "nbma", "ptp", "ptmp", "virtual link" };
! 25:
! 26:
! 27: static void
! 28: poll_timer_hook(timer * timer)
! 29: {
! 30: ospf_send_hello(timer->data, OHS_POLL, NULL);
! 31: }
! 32:
! 33: static void
! 34: hello_timer_hook(timer * timer)
! 35: {
! 36: ospf_send_hello(timer->data, OHS_HELLO, NULL);
! 37: }
! 38:
! 39: static void
! 40: wait_timer_hook(timer * timer)
! 41: {
! 42: struct ospf_iface *ifa = (struct ospf_iface *) timer->data;
! 43: struct ospf_proto *p = ifa->oa->po;
! 44:
! 45: OSPF_TRACE(D_EVENTS, "Wait timer fired on %s", ifa->ifname);
! 46: ospf_iface_sm(ifa, ISM_WAITF);
! 47: }
! 48:
! 49: static inline uint
! 50: ifa_tx_length(struct ospf_iface *ifa)
! 51: {
! 52: return ifa->cf->tx_length ?: ifa->iface->mtu;
! 53: }
! 54:
! 55: static inline uint
! 56: ifa_tx_hdrlen(struct ospf_iface *ifa)
! 57: {
! 58: struct ospf_proto *p = ifa->oa->po;
! 59:
! 60: uint hlen = ospf_is_v2(p) ? IP4_HEADER_LENGTH : IP6_HEADER_LENGTH;
! 61:
! 62: /* Relevant just for OSPFv2 */
! 63: if (ifa->autype == OSPF_AUTH_CRYPT)
! 64: {
! 65: hlen += ospf_is_v2(p) ? 0 : sizeof(struct ospf_auth3);
! 66: hlen += max_mac_length(ifa->passwords);
! 67: }
! 68:
! 69: return hlen;
! 70: }
! 71:
! 72: static inline uint
! 73: ifa_bufsize(struct ospf_iface *ifa)
! 74: {
! 75: uint bsize = ifa->cf->rx_buffer ?: ifa->iface->mtu;
! 76: return MAX(bsize, ifa->tx_length);
! 77: }
! 78:
! 79: static inline uint
! 80: ifa_flood_queue_size(struct ospf_iface *ifa)
! 81: {
! 82: return ifa->tx_length / 24;
! 83: }
! 84:
! 85: int
! 86: ospf_iface_assure_bufsize(struct ospf_iface *ifa, uint plen)
! 87: {
! 88: plen += ifa->tx_hdrlen;
! 89:
! 90: if (plen <= ifa->sk->tbsize)
! 91: return 0;
! 92:
! 93: if (ifa->cf->rx_buffer || (plen > 0xffff))
! 94: return -1;
! 95:
! 96: plen = BIRD_ALIGN(plen, 1024);
! 97: plen = MIN(plen, 0xffff);
! 98: sk_set_tbsize(ifa->sk, plen);
! 99: return 1;
! 100: }
! 101:
! 102:
! 103: struct nbma_node *
! 104: find_nbma_node_(list *nnl, ip_addr ip)
! 105: {
! 106: struct nbma_node *nn;
! 107:
! 108: WALK_LIST(nn, *nnl)
! 109: if (ipa_equal(nn->ip, ip))
! 110: return nn;
! 111:
! 112: return NULL;
! 113: }
! 114:
! 115:
! 116: static int
! 117: ospf_sk_open(struct ospf_iface *ifa)
! 118: {
! 119: struct ospf_proto *p = ifa->oa->po;
! 120:
! 121: sock *sk = sk_new(ifa->pool);
! 122: sk->type = SK_IP;
! 123: sk->subtype = ospf_is_v2(p) ? SK_IPV4 : SK_IPV6;
! 124: sk->dport = OSPF_PROTO;
! 125: sk->saddr = ifa->addr->ip;
! 126: sk->iface = ifa->iface;
! 127: sk->vrf = p->p.vrf;
! 128:
! 129: sk->tos = ifa->cf->tx_tos;
! 130: sk->priority = ifa->cf->tx_priority;
! 131: sk->rx_hook = ospf_rx_hook;
! 132: // sk->tx_hook = ospf_tx_hook;
! 133: sk->err_hook = ospf_err_hook;
! 134: sk->rbsize = sk->tbsize = ifa_bufsize(ifa);
! 135: sk->data = (void *) ifa;
! 136: sk->flags = SKF_LADDR_RX | (ifa->check_ttl ? SKF_TTL_RX : 0);
! 137: sk->ttl = ifa->cf->ttl_security ? 255 : 1;
! 138:
! 139: if (sk_open(sk) < 0)
! 140: goto err;
! 141:
! 142: /* 12 is an offset of the checksum in an OSPFv3 packet */
! 143: if (ospf_is_v3(p) && !ifa->autype)
! 144: if (sk_set_ipv6_checksum(sk, 12) < 0)
! 145: goto err;
! 146:
! 147: if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_PTP))
! 148: {
! 149: if (ifa->cf->real_bcast)
! 150: {
! 151: ifa->all_routers = ifa->addr->brd;
! 152: ifa->des_routers = IPA_NONE;
! 153:
! 154: if (sk_setup_broadcast(sk) < 0)
! 155: goto err;
! 156: }
! 157: else
! 158: {
! 159: ifa->all_routers = ospf_is_v2(p) ? IP4_OSPF_ALL_ROUTERS : IP6_OSPF_ALL_ROUTERS;
! 160: ifa->des_routers = ospf_is_v2(p) ? IP4_OSPF_DES_ROUTERS : IP6_OSPF_DES_ROUTERS;
! 161:
! 162: if (sk_setup_multicast(sk) < 0)
! 163: goto err;
! 164:
! 165: if (sk_join_group(sk, ifa->all_routers) < 0)
! 166: goto err;
! 167: }
! 168: }
! 169:
! 170: ifa->sk = sk;
! 171: ifa->sk_dr = 0;
! 172: return 1;
! 173:
! 174: err:
! 175: sk_log_error(sk, p->p.name);
! 176: rfree(sk);
! 177: return 0;
! 178: }
! 179:
! 180: static inline void
! 181: ospf_sk_join_dr(struct ospf_iface *ifa)
! 182: {
! 183: if (ifa->sk_dr)
! 184: return;
! 185:
! 186: if (sk_join_group(ifa->sk, ifa->des_routers) < 0)
! 187: sk_log_error(ifa->sk, ifa->oa->po->p.name);
! 188:
! 189: ifa->sk_dr = 1;
! 190: }
! 191:
! 192: static inline void
! 193: ospf_sk_leave_dr(struct ospf_iface *ifa)
! 194: {
! 195: if (!ifa->sk_dr)
! 196: return;
! 197:
! 198: if (sk_leave_group(ifa->sk, ifa->des_routers) < 0)
! 199: sk_log_error(ifa->sk, ifa->oa->po->p.name);
! 200:
! 201: ifa->sk_dr = 0;
! 202: }
! 203:
! 204: void
! 205: ospf_open_vlink_sk(struct ospf_proto *p)
! 206: {
! 207: sock *sk = sk_new(p->p.pool);
! 208: sk->type = SK_IP;
! 209: sk->subtype = ospf_is_v2(p) ? SK_IPV4 : SK_IPV6;
! 210: sk->dport = OSPF_PROTO;
! 211: sk->vrf = p->p.vrf;
! 212:
! 213: /* FIXME: configurable tos/priority ? */
! 214: sk->tos = IP_PREC_INTERNET_CONTROL;
! 215: sk->priority = sk_priority_control;
! 216: sk->err_hook = ospf_verr_hook;
! 217:
! 218: sk->rbsize = 0;
! 219: sk->tbsize = ospf_is_v2(p) ? IP4_MIN_MTU : IP6_MIN_MTU;
! 220: sk->data = (void *) p;
! 221: sk->flags = 0;
! 222:
! 223: if (sk_open(sk) < 0)
! 224: goto err;
! 225:
! 226: /* 12 is an offset of the checksum in an OSPFv3 packet */
! 227: if (ospf_is_v3(p))
! 228: if (sk_set_ipv6_checksum(sk, 12) < 0)
! 229: goto err;
! 230:
! 231: p->vlink_sk = sk;
! 232: return;
! 233:
! 234: err:
! 235: sk_log_error(sk, p->p.name);
! 236: log(L_ERR "%s: Cannot open virtual link socket", p->p.name);
! 237: rfree(sk);
! 238: }
! 239:
! 240: static void
! 241: ospf_iface_down(struct ospf_iface *ifa)
! 242: {
! 243: struct ospf_proto *p = ifa->oa->po;
! 244: struct ospf_neighbor *n, *nx;
! 245: struct ospf_iface *iff;
! 246:
! 247: if (ifa->type != OSPF_IT_VLINK)
! 248: {
! 249: if (ospf_is_v3(ifa->oa->po))
! 250: OSPF_TRACE(D_EVENTS, "Removing interface %s (IID %d) from area %R",
! 251: ifa->ifname, ifa->instance_id, ifa->oa->areaid);
! 252: else if (ifa->addr->flags & IA_PEER)
! 253: OSPF_TRACE(D_EVENTS, "Removing interface %s (peer %I) from area %R",
! 254: ifa->ifname, ifa->addr->opposite, ifa->oa->areaid);
! 255: else
! 256: OSPF_TRACE(D_EVENTS, "Removing interface %s (%N) from area %R",
! 257: ifa->ifname, &ifa->addr->prefix, ifa->oa->areaid);
! 258:
! 259: /* First of all kill all the related vlinks */
! 260: WALK_LIST(iff, p->iface_list)
! 261: {
! 262: if ((iff->type == OSPF_IT_VLINK) && (iff->vifa == ifa))
! 263: ospf_iface_sm(iff, ISM_DOWN);
! 264: }
! 265: }
! 266:
! 267: WALK_LIST_DELSAFE(n, nx, ifa->neigh_list)
! 268: ospf_neigh_sm(n, INM_KILLNBR);
! 269:
! 270: if (ifa->hello_timer)
! 271: tm_stop(ifa->hello_timer);
! 272:
! 273: if (ifa->poll_timer)
! 274: tm_stop(ifa->poll_timer);
! 275:
! 276: if (ifa->wait_timer)
! 277: tm_stop(ifa->wait_timer);
! 278:
! 279: ospf_flush2_lsa(p, &ifa->link_lsa);
! 280: ospf_flush2_lsa(p, &ifa->net_lsa);
! 281: ospf_flush2_lsa(p, &ifa->pxn_lsa);
! 282:
! 283: if (ifa->type == OSPF_IT_VLINK)
! 284: {
! 285: ifa->vifa = NULL;
! 286: ifa->addr = NULL;
! 287: ifa->cost = 0;
! 288: ifa->vip = IPA_NONE;
! 289: }
! 290:
! 291: ifa->rt_pos_beg = 0;
! 292: ifa->rt_pos_end = 0;
! 293: ifa->px_pos_beg = 0;
! 294: ifa->px_pos_end = 0;
! 295: }
! 296:
! 297:
! 298: void
! 299: ospf_iface_remove(struct ospf_iface *ifa)
! 300: {
! 301: struct ospf_proto *p = ifa->oa->po;
! 302: int i;
! 303:
! 304: if (ifa->type == OSPF_IT_VLINK)
! 305: OSPF_TRACE(D_EVENTS, "Removing vlink to %R via area %R", ifa->vid, ifa->voa->areaid);
! 306:
! 307: /* Release LSAs from flood queue */
! 308: if (!ifa->stub)
! 309: for (i = 0; i < ifa->flood_queue_used; i++)
! 310: ifa->flood_queue[i]->ret_count--;
! 311:
! 312: ospf_iface_sm(ifa, ISM_DOWN);
! 313: rem_node(NODE ifa);
! 314: rfree(ifa->pool);
! 315: }
! 316:
! 317: void
! 318: ospf_iface_shutdown(struct ospf_iface *ifa)
! 319: {
! 320: if (ifa->state > OSPF_IS_DOWN)
! 321: ospf_send_hello(ifa, OHS_SHUTDOWN, NULL);
! 322: }
! 323:
! 324: /**
! 325: * ospf_iface_chstate - handle changes of interface state
! 326: * @ifa: OSPF interface
! 327: * @state: new state
! 328: *
! 329: * Many actions must be taken according to interface state changes. New network
! 330: * LSAs must be originated, flushed, new multicast sockets to listen for messages for
! 331: * %ALLDROUTERS have to be opened, etc.
! 332: */
! 333: void
! 334: ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
! 335: {
! 336: struct ospf_proto *p = ifa->oa->po;
! 337: u8 oldstate = ifa->state;
! 338:
! 339: if (state == oldstate)
! 340: return;
! 341:
! 342: OSPF_TRACE(D_EVENTS, "Interface %s changed state from %s to %s",
! 343: ifa->ifname, ospf_is_names[oldstate], ospf_is_names[state]);
! 344:
! 345: ifa->state = state;
! 346:
! 347: if ((ifa->type == OSPF_IT_BCAST) && ipa_nonzero(ifa->des_routers) && ifa->sk)
! 348: {
! 349: if ((state == OSPF_IS_BACKUP) || (state == OSPF_IS_DR))
! 350: ospf_sk_join_dr(ifa);
! 351: else
! 352: ospf_sk_leave_dr(ifa);
! 353: }
! 354:
! 355: if ((oldstate > OSPF_IS_LOOP) && (state <= OSPF_IS_LOOP))
! 356: ospf_iface_down(ifa);
! 357:
! 358: /* RFC 2328 12.4 Event 2 - iface state change */
! 359: ospf_notify_rt_lsa(ifa->oa);
! 360:
! 361: /* RFC 5340 4.4.3 Event 1 - iface state change */
! 362: ospf_notify_link_lsa(ifa);
! 363:
! 364: /* RFC 2328 12.4 Event 3 - iface enters/leaves DR state */
! 365: ospf_notify_net_lsa(ifa);
! 366: }
! 367:
! 368: /**
! 369: * ospf_iface_sm - OSPF interface state machine
! 370: * @ifa: OSPF interface
! 371: * @event: event comming to state machine
! 372: *
! 373: * This fully respects 9.3 of RFC 2328 except we have slightly
! 374: * different handling of %DOWN and %LOOP state. We remove intefaces
! 375: * that are %DOWN. %DOWN state is used when an interface is waiting
! 376: * for a lock. %LOOP state is used when an interface does not have a
! 377: * link.
! 378: */
! 379: void
! 380: ospf_iface_sm(struct ospf_iface *ifa, int event)
! 381: {
! 382: DBG("SM on %s. Event is '%s'\n", ifa->ifname, ospf_ism_names[event]);
! 383:
! 384: switch (event)
! 385: {
! 386: case ISM_UP:
! 387: if (ifa->state <= OSPF_IS_LOOP)
! 388: {
! 389: /* Now, nothing should be adjacent */
! 390: if ((ifa->type == OSPF_IT_PTP) ||
! 391: (ifa->type == OSPF_IT_PTMP) ||
! 392: (ifa->type == OSPF_IT_VLINK))
! 393: {
! 394: ospf_iface_chstate(ifa, OSPF_IS_PTP);
! 395: }
! 396: else
! 397: {
! 398: if (ifa->priority == 0)
! 399: ospf_iface_chstate(ifa, OSPF_IS_DROTHER);
! 400: else
! 401: {
! 402: ospf_iface_chstate(ifa, OSPF_IS_WAITING);
! 403: if (ifa->wait_timer)
! 404: tm_start(ifa->wait_timer, ifa->waitint S);
! 405: }
! 406: }
! 407:
! 408: if (ifa->hello_timer)
! 409: tm_start(ifa->hello_timer, ifa->helloint S);
! 410:
! 411: if (ifa->poll_timer)
! 412: tm_start(ifa->poll_timer, ifa->pollint S);
! 413:
! 414: ospf_send_hello(ifa, OHS_HELLO, NULL);
! 415: }
! 416: break;
! 417:
! 418: case ISM_BACKS:
! 419: case ISM_WAITF:
! 420: if (ifa->state == OSPF_IS_WAITING)
! 421: ospf_dr_election(ifa);
! 422: break;
! 423:
! 424: case ISM_NEICH:
! 425: if (ifa->state >= OSPF_IS_DROTHER)
! 426: ospf_dr_election(ifa);
! 427: break;
! 428:
! 429: case ISM_LOOP:
! 430: if ((ifa->state > OSPF_IS_LOOP) && ifa->check_link)
! 431: ospf_iface_chstate(ifa, OSPF_IS_LOOP);
! 432: break;
! 433:
! 434: case ISM_UNLOOP:
! 435: /* Immediate go UP */
! 436: if (ifa->state == OSPF_IS_LOOP)
! 437: ospf_iface_sm(ifa, ISM_UP);
! 438: break;
! 439:
! 440: case ISM_DOWN:
! 441: ospf_iface_chstate(ifa, OSPF_IS_DOWN);
! 442: break;
! 443:
! 444: default:
! 445: bug("OSPF_I_SM - Unknown event?");
! 446: break;
! 447: }
! 448:
! 449: }
! 450:
! 451: static u8
! 452: ospf_iface_classify_(struct iface *ifa, struct ifa *addr)
! 453: {
! 454: if (ipa_nonzero(addr->opposite))
! 455: return (ifa->flags & IF_MULTICAST) ? OSPF_IT_PTP : OSPF_IT_PTMP;
! 456:
! 457: if ((ifa->flags & (IF_MULTIACCESS | IF_MULTICAST)) ==
! 458: (IF_MULTIACCESS | IF_MULTICAST))
! 459: return OSPF_IT_BCAST;
! 460:
! 461: if ((ifa->flags & (IF_MULTIACCESS | IF_MULTICAST)) == IF_MULTIACCESS)
! 462: return OSPF_IT_NBMA;
! 463:
! 464: return OSPF_IT_PTP;
! 465: }
! 466:
! 467: static inline u8
! 468: ospf_iface_classify(u8 type, struct ifa *addr)
! 469: {
! 470: return (type != OSPF_IT_UNDEF) ? type : ospf_iface_classify_(addr->iface, addr);
! 471: }
! 472:
! 473:
! 474: struct ospf_iface *
! 475: ospf_iface_find(struct ospf_proto *p, struct iface *what)
! 476: {
! 477: struct ospf_iface *ifa;
! 478:
! 479: WALK_LIST(ifa, p->iface_list)
! 480: if ((ifa->iface == what) && (ifa->type != OSPF_IT_VLINK))
! 481: return ifa;
! 482:
! 483: return NULL;
! 484: }
! 485:
! 486: static void
! 487: ospf_iface_add(struct object_lock *lock)
! 488: {
! 489: struct ospf_iface *ifa = lock->data;
! 490: struct ospf_proto *p = ifa->oa->po;
! 491:
! 492: /* Open socket if interface is not stub */
! 493: if (! ifa->stub && ! ospf_sk_open(ifa))
! 494: {
! 495: log(L_ERR "%s: Cannot open socket for %s, declaring as stub", p->p.name, ifa->ifname);
! 496: ifa->ioprob = OSPF_I_SK;
! 497: ifa->stub = 1;
! 498: }
! 499:
! 500: if (! ifa->stub)
! 501: {
! 502: ifa->hello_timer = tm_new_init(ifa->pool, hello_timer_hook, ifa, ifa->helloint S, 0);
! 503:
! 504: if (ifa->type == OSPF_IT_NBMA)
! 505: ifa->poll_timer = tm_new_init(ifa->pool, poll_timer_hook, ifa, ifa->pollint S, 0);
! 506:
! 507: if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_NBMA))
! 508: ifa->wait_timer = tm_new_init(ifa->pool, wait_timer_hook, ifa, 0, 0);
! 509:
! 510: ifa->flood_queue_size = ifa_flood_queue_size(ifa);
! 511: ifa->flood_queue = mb_allocz(ifa->pool, ifa->flood_queue_size * sizeof(void *));
! 512: }
! 513:
! 514: /* Do iface UP, unless there is no link (then wait in LOOP state) */
! 515: if (!ifa->check_link || (ifa->iface->flags & IF_LINK_UP))
! 516: ospf_iface_sm(ifa, ISM_UP);
! 517: else
! 518: ospf_iface_chstate(ifa, OSPF_IS_LOOP);
! 519: }
! 520:
! 521: static inline void
! 522: add_nbma_node(struct ospf_iface *ifa, struct nbma_node *src, int found)
! 523: {
! 524: struct nbma_node *n = mb_alloc(ifa->pool, sizeof(struct nbma_node));
! 525: add_tail(&ifa->nbma_list, NODE n);
! 526: n->ip = src->ip;
! 527: n->eligible = src->eligible;
! 528: n->found = found;
! 529: }
! 530:
! 531: static int
! 532: ospf_iface_stubby(struct ospf_iface_patt *ip, struct ifa *addr)
! 533: {
! 534: /* vlink cannot be stub */
! 535: if (ip->type == OSPF_IT_VLINK)
! 536: return 0;
! 537:
! 538: /* a host address */
! 539: if (addr->flags & IA_HOST)
! 540: return 1;
! 541:
! 542: /* a loopback iface */
! 543: if (addr->iface->flags & IF_LOOPBACK)
! 544: return 1;
! 545:
! 546: return ip->stub;
! 547: }
! 548:
! 549: void
! 550: ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip)
! 551: {
! 552: struct ospf_proto *p = oa->po;
! 553: struct iface *iface = addr->iface;
! 554: struct ospf_iface *ifa;
! 555: struct pool *pool;
! 556:
! 557: if (ospf_is_v3(p))
! 558: OSPF_TRACE(D_EVENTS, "Adding interface %s (IID %d) to area %R",
! 559: iface->name, ip->instance_id, oa->areaid);
! 560: else if (addr->flags & IA_PEER)
! 561: OSPF_TRACE(D_EVENTS, "Adding interface %s (peer %I) to area %R",
! 562: iface->name, addr->opposite, oa->areaid);
! 563: else
! 564: OSPF_TRACE(D_EVENTS, "Adding interface %s (%N) to area %R",
! 565: iface->name, &addr->prefix, oa->areaid);
! 566:
! 567: pool = rp_new(p->p.pool, "OSPF Interface");
! 568: ifa = mb_allocz(pool, sizeof(struct ospf_iface));
! 569: ifa->iface = iface;
! 570: ifa->addr = addr;
! 571: ifa->oa = oa;
! 572: ifa->cf = ip;
! 573: ifa->pool = pool;
! 574:
! 575: ifa->iface_id = iface->index;
! 576: ifa->ifname = iface->name;
! 577:
! 578: ifa->cost = ip->cost;
! 579: ifa->rxmtint = ip->rxmtint;
! 580: ifa->inftransdelay = ip->inftransdelay;
! 581: ifa->priority = ip->priority;
! 582: ifa->helloint = ip->helloint;
! 583: ifa->pollint = ip->pollint;
! 584: ifa->strictnbma = ip->strictnbma;
! 585: ifa->waitint = ip->waitint;
! 586: ifa->deadint = ip->deadint;
! 587: ifa->stub = ospf_iface_stubby(ip, addr);
! 588: ifa->ioprob = OSPF_I_OK;
! 589: ifa->tx_length = ifa_tx_length(ifa);
! 590: ifa->tx_hdrlen = ifa_tx_hdrlen(ifa);
! 591: ifa->check_link = ip->check_link;
! 592: ifa->ecmp_weight = ip->ecmp_weight;
! 593: ifa->check_ttl = (ip->ttl_security == 1);
! 594: ifa->bfd = ip->bfd;
! 595: ifa->autype = ip->autype;
! 596: ifa->passwords = ip->passwords;
! 597: ifa->instance_id = ip->instance_id;
! 598:
! 599: ifa->ptp_netmask = !(addr->flags & IA_PEER);
! 600: if (ip->ptp_netmask < 2)
! 601: ifa->ptp_netmask = ip->ptp_netmask;
! 602:
! 603: ifa->drip = ifa->bdrip = ospf_is_v2(p) ? IPA_NONE4 : IPA_NONE6;
! 604:
! 605: ifa->type = ospf_iface_classify(ip->type, addr);
! 606:
! 607: /* Check validity of interface type */
! 608: int old_type = ifa->type;
! 609: u32 if_multi_flag = ip->real_bcast ? IF_BROADCAST : IF_MULTICAST;
! 610:
! 611: if (ospf_is_v2(p) && (ifa->type == OSPF_IT_BCAST) && (addr->flags & IA_PEER))
! 612: ifa->type = OSPF_IT_PTP;
! 613:
! 614: if (ospf_is_v2(p) && (ifa->type == OSPF_IT_NBMA) && (addr->flags & IA_PEER))
! 615: ifa->type = OSPF_IT_PTMP;
! 616:
! 617: if ((ifa->type == OSPF_IT_BCAST) && !(iface->flags & if_multi_flag) && !ifa->stub)
! 618: ifa->type = OSPF_IT_NBMA;
! 619:
! 620: if ((ifa->type == OSPF_IT_PTP) && !(iface->flags & if_multi_flag) && !ifa->stub)
! 621: ifa->type = OSPF_IT_PTMP;
! 622:
! 623: if (ifa->type != old_type)
! 624: log(L_WARN "%s: Cannot use interface %s as %s, forcing %s",
! 625: p->p.name, iface->name, ospf_it[old_type], ospf_it[ifa->type]);
! 626:
! 627:
! 628: if ((ifa->type == OSPF_IT_PTP) || (ifa->type == OSPF_IT_PTMP))
! 629: ifa->link_lsa_suppression = ip->link_lsa_suppression;
! 630:
! 631: ifa->state = OSPF_IS_DOWN;
! 632: init_list(&ifa->neigh_list);
! 633: init_list(&ifa->nbma_list);
! 634:
! 635: struct nbma_node *nb;
! 636: WALK_LIST(nb, ip->nbma_list)
! 637: {
! 638: /* In OSPFv3, addr is link-local while configured neighbors could
! 639: have global IP (although RFC 5340 C.5 says link-local addresses
! 640: should be used). Because OSPFv3 iface is not subnet-specific,
! 641: there is no need for ipa_in_net() check */
! 642:
! 643: if (ospf_is_v2(p) && !ipa_in_netX(nb->ip, &addr->prefix))
! 644: continue;
! 645:
! 646: if (ospf_is_v3(p) && !ipa_is_link_local(nb->ip))
! 647: log(L_WARN "%s: Configured neighbor address (%I) should be link-local",
! 648: p->p.name, nb->ip);
! 649:
! 650: add_nbma_node(ifa, nb, 0);
! 651: }
! 652:
! 653: add_tail(&oa->po->iface_list, NODE ifa);
! 654:
! 655: struct object_lock *lock = olock_new(pool);
! 656: lock->addr = ospf_is_v2(p) ? ipa_from_ip4(net4_prefix(&ifa->addr->prefix)) : IPA_NONE;
! 657: lock->type = OBJLOCK_IP;
! 658: lock->port = OSPF_PROTO;
! 659: lock->inst = ifa->instance_id;
! 660: lock->iface = iface;
! 661: lock->data = ifa;
! 662: lock->hook = ospf_iface_add;
! 663:
! 664: olock_acquire(lock);
! 665: }
! 666:
! 667: void
! 668: ospf_iface_new_vlink(struct ospf_proto *p, struct ospf_iface_patt *ip)
! 669: {
! 670: struct ospf_iface *ifa;
! 671: struct pool *pool;
! 672:
! 673: if (!p->vlink_sk)
! 674: return;
! 675:
! 676: OSPF_TRACE(D_EVENTS, "Adding vlink to %R via area %R", ip->vid, ip->voa);
! 677:
! 678: /* Vlink ifname is stored just after the ospf_iface structure */
! 679:
! 680: pool = rp_new(p->p.pool, "OSPF Vlink");
! 681: ifa = mb_allocz(pool, sizeof(struct ospf_iface) + 16);
! 682: ifa->oa = p->backbone;
! 683: ifa->cf = ip;
! 684: ifa->pool = pool;
! 685:
! 686: /* Assign iface ID, for vlinks, this is ugly hack */
! 687: u32 vlink_id = p->last_vlink_id++;
! 688: ifa->iface_id = vlink_id + OSPF_VLINK_ID_OFFSET;
! 689: ifa->ifname = (void *) (ifa + 1);
! 690: bsprintf(ifa->ifname, "vlink%d", vlink_id);
! 691:
! 692: ifa->voa = ospf_find_area(p, ip->voa);
! 693: ifa->vid = ip->vid;
! 694: ifa->sk = p->vlink_sk;
! 695:
! 696: ifa->helloint = ip->helloint;
! 697: ifa->rxmtint = ip->rxmtint;
! 698: ifa->waitint = ip->waitint;
! 699: ifa->deadint = ip->deadint;
! 700: ifa->inftransdelay = ip->inftransdelay;
! 701: ifa->tx_length = ospf_is_v2(p) ? IP4_MIN_MTU : IP6_MIN_MTU;
! 702: ifa->tx_hdrlen = ifa_tx_hdrlen(ifa);
! 703: ifa->autype = ip->autype;
! 704: ifa->passwords = ip->passwords;
! 705: ifa->instance_id = ip->instance_id;
! 706:
! 707: ifa->type = OSPF_IT_VLINK;
! 708:
! 709: ifa->state = OSPF_IS_DOWN;
! 710: init_list(&ifa->neigh_list);
! 711: init_list(&ifa->nbma_list);
! 712:
! 713: add_tail(&p->iface_list, NODE ifa);
! 714:
! 715: ifa->hello_timer = tm_new_init(ifa->pool, hello_timer_hook, ifa, ifa->helloint S, 0);
! 716:
! 717: ifa->flood_queue_size = ifa_flood_queue_size(ifa);
! 718: ifa->flood_queue = mb_allocz(ifa->pool, ifa->flood_queue_size * sizeof(void *));
! 719: }
! 720:
! 721: static void
! 722: ospf_iface_change_timer(timer *tm, uint val)
! 723: {
! 724: if (!tm)
! 725: return;
! 726:
! 727: tm->recurrent = val S;
! 728:
! 729: if (tm_active(tm))
! 730: tm_start(tm, val S);
! 731: }
! 732:
! 733: static inline void
! 734: ospf_iface_update_flood_queue_size(struct ospf_iface *ifa)
! 735: {
! 736: uint old_size = ifa->flood_queue_size;
! 737: uint new_size = ifa_flood_queue_size(ifa);
! 738:
! 739: if (new_size <= old_size)
! 740: return;
! 741:
! 742: ifa->flood_queue_size = new_size;
! 743: ifa->flood_queue = mb_realloc(ifa->flood_queue, new_size * sizeof(void *));
! 744: bzero(ifa->flood_queue + old_size, (new_size - old_size) * sizeof(void *));
! 745: }
! 746:
! 747: int
! 748: ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
! 749: {
! 750: struct ospf_proto *p = ifa->oa->po;
! 751: struct ospf_iface_patt *old = ifa->cf;
! 752: char *ifname = ifa->ifname;
! 753:
! 754: /* Type could be changed in ospf_iface_new(),
! 755: but if config values are same then also results are same */
! 756: int old_type = ospf_iface_classify(old->type, ifa->addr);
! 757: int new_type = ospf_iface_classify(new->type, ifa->addr);
! 758: if (old_type != new_type)
! 759: return 0;
! 760:
! 761: int new_stub = ospf_iface_stubby(new, ifa->addr);
! 762: if (ifa->stub != new_stub)
! 763: return 0;
! 764:
! 765: /* Change of these options would require to reset the iface socket */
! 766: if ((new->real_bcast != old->real_bcast) ||
! 767: (new->tx_tos != old->tx_tos) ||
! 768: (new->tx_priority != old->tx_priority) ||
! 769: (new->ttl_security != old->ttl_security))
! 770: return 0;
! 771:
! 772: ifa->cf = new;
! 773: ifa->marked = 0;
! 774:
! 775: /* Cancel GR peers if GR is disabled */
! 776: if (!p->gr_mode && p->gr_count)
! 777: {
! 778: struct ospf_neighbor *n, *nx;
! 779: WALK_LIST_DELSAFE(n, nx, ifa->neigh_list)
! 780: if (n->gr_active)
! 781: ospf_neigh_cancel_graceful_restart(n);
! 782: }
! 783:
! 784: /* HELLO TIMER */
! 785: if (ifa->helloint != new->helloint)
! 786: {
! 787: OSPF_TRACE(D_EVENTS, "Changing hello interval of %s from %d to %d",
! 788: ifname, ifa->helloint, new->helloint);
! 789:
! 790: ifa->helloint = new->helloint;
! 791: ospf_iface_change_timer(ifa->hello_timer, ifa->helloint);
! 792: }
! 793:
! 794: /* RXMT TIMER */
! 795: if (ifa->rxmtint != new->rxmtint)
! 796: {
! 797: OSPF_TRACE(D_EVENTS, "Changing retransmit interval of %s from %d to %d",
! 798: ifname, ifa->rxmtint, new->rxmtint);
! 799:
! 800: ifa->rxmtint = new->rxmtint;
! 801: /* FIXME: Update neighbors' timers */
! 802: }
! 803:
! 804: /* POLL TIMER */
! 805: if (ifa->pollint != new->pollint)
! 806: {
! 807: OSPF_TRACE(D_EVENTS, "Changing poll interval of %s from %d to %d",
! 808: ifname, ifa->pollint, new->pollint);
! 809:
! 810: ifa->pollint = new->pollint;
! 811: ospf_iface_change_timer(ifa->poll_timer, ifa->pollint);
! 812: }
! 813:
! 814: /* WAIT TIMER */
! 815: if (ifa->waitint != new->waitint)
! 816: {
! 817: OSPF_TRACE(D_EVENTS, "Changing wait interval of %s from %d to %d",
! 818: ifname, ifa->waitint, new->waitint);
! 819:
! 820: ifa->waitint = new->waitint;
! 821: if (ifa->wait_timer && tm_active(ifa->wait_timer))
! 822: tm_start(ifa->wait_timer, ifa->waitint S);
! 823: }
! 824:
! 825: /* DEAD TIMER */
! 826: if (ifa->deadint != new->deadint)
! 827: {
! 828: OSPF_TRACE(D_EVENTS, "Changing dead interval of %s from %d to %d",
! 829: ifname, ifa->deadint, new->deadint);
! 830: ifa->deadint = new->deadint;
! 831: }
! 832:
! 833: /* INFTRANS */
! 834: if (ifa->inftransdelay != new->inftransdelay)
! 835: {
! 836: OSPF_TRACE(D_EVENTS, "Changing transmit delay of %s from %d to %d",
! 837: ifname, ifa->inftransdelay, new->inftransdelay);
! 838: ifa->inftransdelay = new->inftransdelay;
! 839: }
! 840:
! 841: /* AUTHENTICATION */
! 842: if (ifa->autype != new->autype)
! 843: {
! 844: OSPF_TRACE(D_EVENTS, "Changing authentication type of %s", ifname);
! 845: ifa->autype = new->autype;
! 846:
! 847: /* For OSPFv3, we need to update checksum calculation by OS */
! 848: if (ospf_is_v3(p) && ifa->sk)
! 849: if (sk_set_ipv6_checksum(ifa->sk, ifa->autype ? -1 : 12) < 0)
! 850: {
! 851: sk_log_error(ifa->sk, p->p.name);
! 852: return 0;
! 853: }
! 854: }
! 855:
! 856: /* Update passwords */
! 857: ifa->passwords = new->passwords;
! 858:
! 859: /* Update header length */
! 860: ifa->tx_hdrlen = ifa_tx_hdrlen(ifa);
! 861:
! 862: /* Remaining options are just for proper interfaces */
! 863: if (ifa->type == OSPF_IT_VLINK)
! 864: return 1;
! 865:
! 866:
! 867: /* COST */
! 868: if (ifa->cost != new->cost)
! 869: {
! 870: OSPF_TRACE(D_EVENTS, "Changing cost of %s from %d to %d",
! 871: ifname, ifa->cost, new->cost);
! 872:
! 873: ifa->cost = new->cost;
! 874: }
! 875:
! 876: /* PRIORITY */
! 877: if (ifa->priority != new->priority)
! 878: {
! 879: OSPF_TRACE(D_EVENTS, "Changing priority of %s from %d to %d",
! 880: ifname, ifa->priority, new->priority);
! 881:
! 882: ifa->priority = new->priority;
! 883: ospf_iface_sm(ifa, ISM_NEICH);
! 884: ospf_notify_link_lsa(ifa);
! 885: }
! 886:
! 887: /* STRICT NBMA */
! 888: if (ifa->strictnbma != new->strictnbma)
! 889: {
! 890: OSPF_TRACE(D_EVENTS, "Changing NBMA strictness of %s from %d to %d",
! 891: ifname, ifa->strictnbma, new->strictnbma);
! 892: ifa->strictnbma = new->strictnbma;
! 893: }
! 894:
! 895: struct nbma_node *nb, *nbx;
! 896:
! 897: /* NBMA LIST - remove or update old */
! 898: WALK_LIST_DELSAFE(nb, nbx, ifa->nbma_list)
! 899: {
! 900: struct nbma_node *nb2 = find_nbma_node_(&new->nbma_list, nb->ip);
! 901: if (nb2)
! 902: {
! 903: if (nb->eligible != nb2->eligible)
! 904: {
! 905: OSPF_TRACE(D_EVENTS, "Changing eligibility of NBMA neighbor %I on %s",
! 906: nb->ip, ifname);
! 907: nb->eligible = nb2->eligible;
! 908: }
! 909: }
! 910: else
! 911: {
! 912: OSPF_TRACE(D_EVENTS, "Removing NBMA neighbor %I on %s",
! 913: nb->ip, ifname);
! 914: rem_node(NODE nb);
! 915: mb_free(nb);
! 916: }
! 917: }
! 918:
! 919: /* NBMA LIST - add new */
! 920: WALK_LIST(nb, new->nbma_list)
! 921: {
! 922: /* See related note in ospf_iface_new() */
! 923: if (ospf_is_v2(p) && !ipa_in_netX(nb->ip, &ifa->addr->prefix))
! 924: continue;
! 925:
! 926: if (ospf_is_v3(p) && !ipa_is_link_local(nb->ip))
! 927: log(L_WARN "%s: Configured neighbor address (%I) should be link-local",
! 928: p->p.name, nb->ip);
! 929:
! 930: if (! find_nbma_node(ifa, nb->ip))
! 931: {
! 932: OSPF_TRACE(D_EVENTS, "Adding NBMA neighbor %I on %s",
! 933: nb->ip, ifname);
! 934: add_nbma_node(ifa, nb, !!find_neigh_by_ip(ifa, nb->ip));
! 935: }
! 936: }
! 937:
! 938: int update_buffers = 0;
! 939:
! 940: /* TX LENGTH */
! 941: if (old->tx_length != new->tx_length)
! 942: {
! 943: OSPF_TRACE(D_EVENTS, "Changing TX length of %s from %d to %d",
! 944: ifname, old->tx_length, new->tx_length);
! 945:
! 946: /* ifa cannot be vlink */
! 947: ifa->tx_length = ifa_tx_length(ifa);
! 948: update_buffers = 1;
! 949:
! 950: if (!ifa->stub)
! 951: ospf_iface_update_flood_queue_size(ifa);
! 952: }
! 953:
! 954: /* RX BUFFER */
! 955: if (old->rx_buffer != new->rx_buffer)
! 956: {
! 957: OSPF_TRACE(D_EVENTS, "Changing buffer size of %s from %d to %d",
! 958: ifname, old->rx_buffer, new->rx_buffer);
! 959:
! 960: /* ifa cannot be vlink */
! 961: update_buffers = 1;
! 962: }
! 963:
! 964: /* Buffer size depends on both tx_length and rx_buffer options */
! 965: if (update_buffers && ifa->sk)
! 966: {
! 967: uint bsize = ifa_bufsize(ifa);
! 968: sk_set_rbsize(ifa->sk, bsize);
! 969: sk_set_tbsize(ifa->sk, bsize);
! 970: }
! 971:
! 972: /* LINK */
! 973: if (ifa->check_link != new->check_link)
! 974: {
! 975: OSPF_TRACE(D_EVENTS, "%s link check for %s",
! 976: new->check_link ? "Enabling" : "Disabling", ifname);
! 977: ifa->check_link = new->check_link;
! 978:
! 979: /* ifa cannot be vlink */
! 980: if (!(ifa->iface->flags & IF_LINK_UP))
! 981: ospf_iface_sm(ifa, ifa->check_link ? ISM_LOOP : ISM_UNLOOP);
! 982: }
! 983:
! 984: /* ECMP weight */
! 985: if (ifa->ecmp_weight != new->ecmp_weight)
! 986: {
! 987: OSPF_TRACE(D_EVENTS, "Changing ECMP weight of %s from %d to %d",
! 988: ifname, (int)ifa->ecmp_weight + 1, (int)new->ecmp_weight + 1);
! 989: ifa->ecmp_weight = new->ecmp_weight;
! 990: }
! 991:
! 992: /* Link LSA suppression */
! 993: if (((ifa->type == OSPF_IT_PTP) || (ifa->type == OSPF_IT_PTMP)) &&
! 994: (ifa->link_lsa_suppression != new->link_lsa_suppression))
! 995: {
! 996: OSPF_TRACE(D_EVENTS, "Changing link LSA suppression of %s from %d to %d",
! 997: ifname, ifa->link_lsa_suppression, new->link_lsa_suppression);
! 998:
! 999: ifa->link_lsa_suppression = new->link_lsa_suppression;
! 1000: ospf_notify_link_lsa(ifa);
! 1001: }
! 1002:
! 1003: /* BFD */
! 1004: if (ifa->bfd != new->bfd)
! 1005: {
! 1006: OSPF_TRACE(D_EVENTS, "%s BFD for %s",
! 1007: new->bfd ? "Enabling" : "Disabling", ifname);
! 1008: ifa->bfd = new->bfd;
! 1009:
! 1010: struct ospf_neighbor *n;
! 1011: WALK_LIST(n, ifa->neigh_list)
! 1012: ospf_neigh_update_bfd(n, ifa->bfd);
! 1013: }
! 1014:
! 1015:
! 1016: /* instance_id is not updated - it is part of key */
! 1017:
! 1018: return 1;
! 1019: }
! 1020:
! 1021:
! 1022: /*
! 1023: * State for matching iface pattterns walk
! 1024: *
! 1025: * This is significantly different in OSPFv2 and OSPFv3.
! 1026: * In OSPFv2, OSPF ifaces are created for each IP prefix (struct ifa)
! 1027: * In OSPFv3, OSPF ifaces are created based on real iface (struct iface)
! 1028: * We support instance_id for both OSPFv2 (RFC 6549) and OSPFv3.
! 1029: *
! 1030: * We process one ifa/iface and match it for all configured instance IDs. We
! 1031: * maintain bitfields to track whether given instance ID was already matched.
! 1032: * We have two bitfields, one global (active) and one per area (ignore), to
! 1033: * detect misconfigured cases where one iface with one instance ID matches in
! 1034: * multiple areas.
! 1035: */
! 1036:
! 1037: struct ospf_mip_walk {
! 1038: u32 active[8]; /* Bitfield of active instance IDs */
! 1039: u32 ignore[8]; /* Bitfield of instance IDs matched in current area */
! 1040: struct ospf_area *oa; /* Current area */
! 1041: struct ospf_iface_patt *ip; /* Current iface pattern */
! 1042: struct iface *iface; /* Specified iface (input) */
! 1043: struct ifa *a; /* Specified ifa (input) */
! 1044: int warn; /* Whether iface matched in multiple areas */
! 1045: };
! 1046:
! 1047: static int
! 1048: ospf_walk_matching_iface_patts(struct ospf_proto *p, struct ospf_mip_walk *s)
! 1049: {
! 1050: int id;
! 1051:
! 1052: if (s->ip)
! 1053: goto step;
! 1054:
! 1055: WALK_LIST(s->oa, p->area_list)
! 1056: {
! 1057: if (s->oa->marked)
! 1058: continue;
! 1059:
! 1060: WALK_LIST(s->ip, s->oa->ac->patt_list)
! 1061: {
! 1062: id = s->ip->instance_id;
! 1063: if (BIT32_TEST(s->ignore, id))
! 1064: continue;
! 1065:
! 1066: if (iface_patt_match(&s->ip->i, s->iface, s->a))
! 1067: {
! 1068: /* Now we matched ifa/iface/instance_id for the first time in current area */
! 1069: BIT32_SET(s->ignore, id);
! 1070:
! 1071: /* If we already found it in previous areas, ignore it and add warning */
! 1072: if (BIT32_TEST(s->active, id))
! 1073: { s->warn = 1; continue; }
! 1074:
! 1075: BIT32_SET(s->active, id);
! 1076: return 1;
! 1077: step:
! 1078: ;
! 1079: }
! 1080: }
! 1081: BIT32_ZERO(s->ignore, 256);
! 1082: }
! 1083:
! 1084: if (s->warn)
! 1085: log(L_WARN "%s: Interface %s matches for multiple areas", p->p.name, s->iface->name);
! 1086:
! 1087: return 0;
! 1088: }
! 1089:
! 1090:
! 1091: static struct ospf_iface *
! 1092: ospf_iface_find_by_key(struct ospf_proto *p, struct ifa *a, int instance_id)
! 1093: {
! 1094: struct ospf_iface *ifa;
! 1095:
! 1096: WALK_LIST(ifa, p->iface_list)
! 1097: if ((ifa->addr == a) && (ifa->instance_id == instance_id) &&
! 1098: (ifa->type != OSPF_IT_VLINK))
! 1099: return ifa;
! 1100:
! 1101: return NULL;
! 1102: }
! 1103:
! 1104:
! 1105: void
! 1106: ospf_ifa_notify2(struct proto *P, uint flags, struct ifa *a)
! 1107: {
! 1108: struct ospf_proto *p = (struct ospf_proto *) P;
! 1109:
! 1110: if (a->prefix.type != NET_IP4)
! 1111: return;
! 1112:
! 1113: if (a->flags & IA_SECONDARY)
! 1114: return;
! 1115:
! 1116: if (a->scope <= SCOPE_LINK)
! 1117: return;
! 1118:
! 1119: /* In OSPFv2, we create OSPF iface for each address. */
! 1120: if (flags & IF_CHANGE_UP)
! 1121: {
! 1122: struct ospf_mip_walk s = { .iface = a->iface, .a = a };
! 1123: while (ospf_walk_matching_iface_patts(p, &s))
! 1124: ospf_iface_new(s.oa, a, s.ip);
! 1125: }
! 1126:
! 1127: if (flags & IF_CHANGE_DOWN)
! 1128: {
! 1129: struct ospf_iface *ifa, *ifx;
! 1130: WALK_LIST_DELSAFE(ifa, ifx, p->iface_list)
! 1131: if ((ifa->type != OSPF_IT_VLINK) && (ifa->addr == a))
! 1132: ospf_iface_remove(ifa);
! 1133: /* See a note in ospf_iface_notify() */
! 1134: }
! 1135: }
! 1136:
! 1137: void
! 1138: ospf_ifa_notify3(struct proto *P, uint flags, struct ifa *a)
! 1139: {
! 1140: struct ospf_proto *p = (struct ospf_proto *) P;
! 1141:
! 1142: if (a->flags & IA_SECONDARY)
! 1143: return;
! 1144:
! 1145: if (a->scope < SCOPE_LINK)
! 1146: return;
! 1147:
! 1148: /* In OSPFv3, we create OSPF iface for link-local address,
! 1149: other addresses are used for link-LSA. */
! 1150: if (a->scope == SCOPE_LINK)
! 1151: {
! 1152: if (a->prefix.type != NET_IP6)
! 1153: return;
! 1154:
! 1155: if (flags & IF_CHANGE_UP)
! 1156: {
! 1157: struct ospf_mip_walk s = { .iface = a->iface };
! 1158: while (ospf_walk_matching_iface_patts(p, &s))
! 1159: ospf_iface_new(s.oa, a, s.ip);
! 1160: }
! 1161:
! 1162: if (flags & IF_CHANGE_DOWN)
! 1163: {
! 1164: struct ospf_iface *ifa, *ifx;
! 1165: WALK_LIST_DELSAFE(ifa, ifx, p->iface_list)
! 1166: if ((ifa->addr == a) && (ifa->type != OSPF_IT_VLINK))
! 1167: ospf_iface_remove(ifa);
! 1168: }
! 1169: }
! 1170: else
! 1171: {
! 1172: if (a->prefix.type != ospf_get_af(p))
! 1173: return;
! 1174:
! 1175: struct ospf_iface *ifa;
! 1176: WALK_LIST(ifa, p->iface_list)
! 1177: if (ifa->iface == a->iface)
! 1178: {
! 1179: /* RFC 5340 4.4.3 Event 5 - prefix added/deleted */
! 1180: ospf_notify_link_lsa(ifa);
! 1181: ospf_notify_rt_lsa(ifa->oa);
! 1182: }
! 1183: }
! 1184: }
! 1185:
! 1186:
! 1187: static void
! 1188: ospf_reconfigure_ifaces2(struct ospf_proto *p)
! 1189: {
! 1190: struct iface *iface;
! 1191: struct ifa *a;
! 1192:
! 1193: WALK_LIST(iface, iface_list)
! 1194: {
! 1195: if (! (iface->flags & IF_UP))
! 1196: continue;
! 1197:
! 1198: WALK_LIST(a, iface->addrs)
! 1199: {
! 1200: if (a->prefix.type != NET_IP4)
! 1201: continue;
! 1202:
! 1203: if (a->flags & IA_SECONDARY)
! 1204: continue;
! 1205:
! 1206: if (a->scope <= SCOPE_LINK)
! 1207: continue;
! 1208:
! 1209: struct ospf_mip_walk s = { .iface = iface, .a = a };
! 1210: while (ospf_walk_matching_iface_patts(p, &s))
! 1211: {
! 1212: /* Main inner loop */
! 1213: struct ospf_iface *ifa = ospf_iface_find_by_key(p, a, s.ip->instance_id);
! 1214: if (ifa)
! 1215: {
! 1216: if ((ifa->oa == s.oa) && (ifa->marked < 2) &&
! 1217: ospf_iface_reconfigure(ifa, s.ip))
! 1218: continue;
! 1219:
! 1220: /* Hard restart */
! 1221: log(L_INFO "%s: Restarting interface %s (%N) in area %R",
! 1222: p->p.name, ifa->ifname, &a->prefix, s.oa->areaid);
! 1223: ospf_iface_shutdown(ifa);
! 1224: ospf_iface_remove(ifa);
! 1225: }
! 1226:
! 1227: ospf_iface_new(s.oa, a, s.ip);
! 1228: }
! 1229: }
! 1230: }
! 1231: }
! 1232:
! 1233: static void
! 1234: ospf_reconfigure_ifaces3(struct ospf_proto *p)
! 1235: {
! 1236: struct iface *iface;
! 1237: struct ifa *a;
! 1238:
! 1239: WALK_LIST(iface, iface_list)
! 1240: {
! 1241: if (! (iface->flags & IF_UP))
! 1242: continue;
! 1243:
! 1244: WALK_LIST(a, iface->addrs)
! 1245: {
! 1246: if (a->prefix.type != NET_IP6)
! 1247: continue;
! 1248:
! 1249: if (a->flags & IA_SECONDARY)
! 1250: continue;
! 1251:
! 1252: if (a->scope != SCOPE_LINK)
! 1253: continue;
! 1254:
! 1255: struct ospf_mip_walk s = { .iface = iface };
! 1256: while (ospf_walk_matching_iface_patts(p, &s))
! 1257: {
! 1258: /* Main inner loop */
! 1259: struct ospf_iface *ifa = ospf_iface_find_by_key(p, a, s.ip->instance_id);
! 1260: if (ifa)
! 1261: {
! 1262: if ((ifa->oa == s.oa) && (ifa->marked < 2) &&
! 1263: ospf_iface_reconfigure(ifa, s.ip))
! 1264: continue;
! 1265:
! 1266: /* Hard restart */
! 1267: log(L_INFO "%s: Restarting interface %s (IID %d) in area %R",
! 1268: p->p.name, ifa->ifname, ifa->instance_id, s.oa->areaid);
! 1269: ospf_iface_shutdown(ifa);
! 1270: ospf_iface_remove(ifa);
! 1271: }
! 1272:
! 1273: ospf_iface_new(s.oa, a, s.ip);
! 1274: }
! 1275: }
! 1276: }
! 1277: }
! 1278:
! 1279: void
! 1280: ospf_reconfigure_ifaces(struct ospf_proto *p)
! 1281: {
! 1282: if (ospf_is_v2(p))
! 1283: ospf_reconfigure_ifaces2(p);
! 1284: else
! 1285: ospf_reconfigure_ifaces3(p);
! 1286: }
! 1287:
! 1288:
! 1289: static void
! 1290: ospf_iface_change_mtu(struct ospf_proto *p, struct ospf_iface *ifa)
! 1291: {
! 1292: /* ifa is not vlink */
! 1293:
! 1294: OSPF_TRACE(D_EVENTS, "Interface %s changed MTU to %d",
! 1295: ifa->ifname, ifa->iface->mtu);
! 1296:
! 1297: ifa->tx_length = ifa_tx_length(ifa);
! 1298:
! 1299: if (!ifa->sk)
! 1300: return;
! 1301:
! 1302: /* We do not shrink dynamic buffers */
! 1303: uint bsize = ifa_bufsize(ifa);
! 1304: if (bsize > ifa->sk->rbsize)
! 1305: sk_set_rbsize(ifa->sk, bsize);
! 1306: if (bsize > ifa->sk->tbsize)
! 1307: sk_set_tbsize(ifa->sk, bsize);
! 1308:
! 1309: if (!ifa->stub)
! 1310: ospf_iface_update_flood_queue_size(ifa);
! 1311: }
! 1312:
! 1313: static void
! 1314: ospf_iface_notify(struct ospf_proto *p, uint flags, struct ospf_iface *ifa)
! 1315: {
! 1316: /* ifa is not vlink */
! 1317:
! 1318: if (flags & IF_CHANGE_DOWN)
! 1319: {
! 1320: ospf_iface_remove(ifa);
! 1321: return;
! 1322: }
! 1323:
! 1324: if (flags & IF_CHANGE_LINK)
! 1325: ospf_iface_sm(ifa, (ifa->iface->flags & IF_LINK_UP) ? ISM_UNLOOP : ISM_LOOP);
! 1326:
! 1327: if (flags & IF_CHANGE_MTU)
! 1328: ospf_iface_change_mtu(p, ifa);
! 1329: }
! 1330:
! 1331: void
! 1332: ospf_if_notify(struct proto *P, uint flags, struct iface *iface)
! 1333: {
! 1334: struct ospf_proto *p = (struct ospf_proto *) P;
! 1335:
! 1336: /*
! 1337: if (iface->flags & IF_IGNORE)
! 1338: return;
! 1339: */
! 1340:
! 1341: /* Going up means that there are no such ifaces yet */
! 1342: if (flags & IF_CHANGE_UP)
! 1343: return;
! 1344:
! 1345: struct ospf_iface *ifa, *ifx;
! 1346: WALK_LIST_DELSAFE(ifa, ifx, p->iface_list)
! 1347: if (ifa->iface == iface)
! 1348: ospf_iface_notify(p, flags, ifa);
! 1349:
! 1350: /* We use here that even shutting down iface also shuts down
! 1351: the vlinks, but vlinks are not freed and stays in the
! 1352: iface_list even when down */
! 1353: }
! 1354:
! 1355: void
! 1356: ospf_iface_info(struct ospf_iface *ifa)
! 1357: {
! 1358: char *more = "";
! 1359:
! 1360: if (ifa->strictnbma &&
! 1361: ((ifa->type == OSPF_IT_NBMA) || (ifa->type == OSPF_IT_PTMP)))
! 1362: more = " (strict)";
! 1363:
! 1364: if (ifa->cf->real_bcast &&
! 1365: ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_PTP)))
! 1366: more = " (real)";
! 1367:
! 1368: if (ifa->type == OSPF_IT_VLINK)
! 1369: {
! 1370: cli_msg(-1015, "Virtual link %s to %R", ifa->ifname, ifa->vid);
! 1371: cli_msg(-1015, "\tPeer IP: %I", ifa->vip);
! 1372: cli_msg(-1015, "\tTransit area: %R (%u)", ifa->voa->areaid, ifa->voa->areaid);
! 1373: }
! 1374: else
! 1375: {
! 1376: if (ospf_is_v3(ifa->oa->po))
! 1377: cli_msg(-1015, "Interface %s (IID %d)", ifa->ifname, ifa->instance_id);
! 1378: else if (ifa->addr->flags & IA_PEER)
! 1379: cli_msg(-1015, "Interface %s (peer %I)", ifa->ifname, ifa->addr->opposite);
! 1380: else
! 1381: cli_msg(-1015, "Interface %s (%N)", ifa->ifname, &ifa->addr->prefix);
! 1382:
! 1383: cli_msg(-1015, "\tType: %s%s", ospf_it[ifa->type], more);
! 1384: cli_msg(-1015, "\tArea: %R (%u)", ifa->oa->areaid, ifa->oa->areaid);
! 1385: }
! 1386: cli_msg(-1015, "\tState: %s%s", ospf_is_names[ifa->state], ifa->stub ? " (stub)" : "");
! 1387: cli_msg(-1015, "\tPriority: %u", ifa->priority);
! 1388: cli_msg(-1015, "\tCost: %u", ifa->cost);
! 1389: if (ifa->oa->po->ecmp)
! 1390: cli_msg(-1015, "\tECMP weight: %d", ((int) ifa->ecmp_weight) + 1);
! 1391: cli_msg(-1015, "\tHello timer: %u", ifa->helloint);
! 1392:
! 1393: if (ifa->type == OSPF_IT_NBMA)
! 1394: {
! 1395: cli_msg(-1015, "\tPoll timer: %u", ifa->pollint);
! 1396: }
! 1397: cli_msg(-1015, "\tWait timer: %u", ifa->waitint);
! 1398: cli_msg(-1015, "\tDead timer: %u", ifa->deadint);
! 1399: cli_msg(-1015, "\tRetransmit timer: %u", ifa->rxmtint);
! 1400: if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_NBMA))
! 1401: {
! 1402: cli_msg(-1015, "\tDesignated router (ID): %R", ifa->drid);
! 1403: cli_msg(-1015, "\tDesignated router (IP): %I", ifa->drip);
! 1404: cli_msg(-1015, "\tBackup designated router (ID): %R", ifa->bdrid);
! 1405: cli_msg(-1015, "\tBackup designated router (IP): %I", ifa->bdrip);
! 1406: }
! 1407: }
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