nd6.c (80dbff4e99ba37534b40803a1ddff842f5ebdd58) nd6.c (137f91e80f3802084bd96586d09961a846b91665)
1/*-
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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687static int
688regen_tmpaddr(struct in6_ifaddr *ia6)
689{
690 struct ifaddr *ifa;
691 struct ifnet *ifp;
692 struct in6_ifaddr *public_ifa6 = NULL;
693
694 ifp = ia6->ia_ifa.ifa_ifp;
1/*-
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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687static int
688regen_tmpaddr(struct in6_ifaddr *ia6)
689{
690 struct ifaddr *ifa;
691 struct ifnet *ifp;
692 struct in6_ifaddr *public_ifa6 = NULL;
693
694 ifp = ia6->ia_ifa.ifa_ifp;
695 IF_ADDR_LOCK(ifp);
695 IF_ADDR_RLOCK(ifp);
696 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
697 struct in6_ifaddr *it6;
698
699 if (ifa->ifa_addr->sa_family != AF_INET6)
700 continue;
701
702 it6 = (struct in6_ifaddr *)ifa;
703

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729 * address with the prefix.
730 */
731 if (!IFA6_IS_DEPRECATED(it6))
732 public_ifa6 = it6;
733
734 if (public_ifa6 != NULL)
735 ifa_ref(&public_ifa6->ia_ifa);
736 }
696 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
697 struct in6_ifaddr *it6;
698
699 if (ifa->ifa_addr->sa_family != AF_INET6)
700 continue;
701
702 it6 = (struct in6_ifaddr *)ifa;
703

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729 * address with the prefix.
730 */
731 if (!IFA6_IS_DEPRECATED(it6))
732 public_ifa6 = it6;
733
734 if (public_ifa6 != NULL)
735 ifa_ref(&public_ifa6->ia_ifa);
736 }
737 IF_ADDR_UNLOCK(ifp);
737 IF_ADDR_RUNLOCK(ifp);
738
739 if (public_ifa6 != NULL) {
740 int e;
741
742 if ((e = in6_tmpifadd(public_ifa6, 0, 0)) != 0) {
743 ifa_free(&public_ifa6->ia_ifa);
744 log(LOG_NOTICE, "regen_tmpaddr: failed to create a new"
745 " tmp addr,errno=%d\n", e);

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1361 /*
1362 * If the interface is marked as ND6_IFF_IFDISABLED and
1363 * has an link-local address with IN6_IFF_DUPLICATED,
1364 * do not clear ND6_IFF_IFDISABLED.
1365 * See RFC 4862, Section 5.4.5.
1366 */
1367 int duplicated_linklocal = 0;
1368
738
739 if (public_ifa6 != NULL) {
740 int e;
741
742 if ((e = in6_tmpifadd(public_ifa6, 0, 0)) != 0) {
743 ifa_free(&public_ifa6->ia_ifa);
744 log(LOG_NOTICE, "regen_tmpaddr: failed to create a new"
745 " tmp addr,errno=%d\n", e);

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1361 /*
1362 * If the interface is marked as ND6_IFF_IFDISABLED and
1363 * has an link-local address with IN6_IFF_DUPLICATED,
1364 * do not clear ND6_IFF_IFDISABLED.
1365 * See RFC 4862, Section 5.4.5.
1366 */
1367 int duplicated_linklocal = 0;
1368
1369 IF_ADDR_LOCK(ifp);
1369 IF_ADDR_RLOCK(ifp);
1370 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1371 if (ifa->ifa_addr->sa_family != AF_INET6)
1372 continue;
1373 ia = (struct in6_ifaddr *)ifa;
1374 if ((ia->ia6_flags & IN6_IFF_DUPLICATED) &&
1375 IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia))) {
1376 duplicated_linklocal = 1;
1377 break;
1378 }
1379 }
1370 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1371 if (ifa->ifa_addr->sa_family != AF_INET6)
1372 continue;
1373 ia = (struct in6_ifaddr *)ifa;
1374 if ((ia->ia6_flags & IN6_IFF_DUPLICATED) &&
1375 IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia))) {
1376 duplicated_linklocal = 1;
1377 break;
1378 }
1379 }
1380 IF_ADDR_UNLOCK(ifp);
1380 IF_ADDR_RUNLOCK(ifp);
1381
1382 if (duplicated_linklocal) {
1383 ND.flags |= ND6_IFF_IFDISABLED;
1384 log(LOG_ERR, "Cannot enable an interface"
1385 " with a link-local address marked"
1386 " duplicate.\n");
1387 } else {
1388 ND_IFINFO(ifp)->flags &= ~ND6_IFF_IFDISABLED;
1389 if (ifp->if_flags & IFF_UP)
1390 in6_if_up(ifp);
1391 }
1392 } else if (!(ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) &&
1393 (ND.flags & ND6_IFF_IFDISABLED)) {
1394 /* ifdisabled 0->1 transision */
1395 /* Mark all IPv6 address as tentative. */
1396
1397 ND_IFINFO(ifp)->flags |= ND6_IFF_IFDISABLED;
1381
1382 if (duplicated_linklocal) {
1383 ND.flags |= ND6_IFF_IFDISABLED;
1384 log(LOG_ERR, "Cannot enable an interface"
1385 " with a link-local address marked"
1386 " duplicate.\n");
1387 } else {
1388 ND_IFINFO(ifp)->flags &= ~ND6_IFF_IFDISABLED;
1389 if (ifp->if_flags & IFF_UP)
1390 in6_if_up(ifp);
1391 }
1392 } else if (!(ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) &&
1393 (ND.flags & ND6_IFF_IFDISABLED)) {
1394 /* ifdisabled 0->1 transision */
1395 /* Mark all IPv6 address as tentative. */
1396
1397 ND_IFINFO(ifp)->flags |= ND6_IFF_IFDISABLED;
1398 IF_ADDR_LOCK(ifp);
1398 IF_ADDR_RLOCK(ifp);
1399 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1400 if (ifa->ifa_addr->sa_family != AF_INET6)
1401 continue;
1402 ia = (struct in6_ifaddr *)ifa;
1403 ia->ia6_flags |= IN6_IFF_TENTATIVE;
1404 }
1399 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1400 if (ifa->ifa_addr->sa_family != AF_INET6)
1401 continue;
1402 ia = (struct in6_ifaddr *)ifa;
1403 ia->ia6_flags |= IN6_IFF_TENTATIVE;
1404 }
1405 IF_ADDR_UNLOCK(ifp);
1405 IF_ADDR_RUNLOCK(ifp);
1406 }
1407
1408 if (ND.flags & ND6_IFF_AUTO_LINKLOCAL) {
1409 if (!(ND_IFINFO(ifp)->flags & ND6_IFF_AUTO_LINKLOCAL)) {
1410 /* auto_linklocal 0->1 transision */
1411
1412 /* If no link-local address on ifp, configure */
1413 ND_IFINFO(ifp)->flags |= ND6_IFF_AUTO_LINKLOCAL;
1414 in6_ifattach(ifp, NULL);
1415 } else if (!(ND.flags & ND6_IFF_IFDISABLED) &&
1416 ifp->if_flags & IFF_UP) {
1417 /*
1418 * When the IF already has
1419 * ND6_IFF_AUTO_LINKLOCAL, no link-local
1420 * address is assigned, and IFF_UP, try to
1421 * assign one.
1422 */
1423 int haslinklocal = 0;
1424
1406 }
1407
1408 if (ND.flags & ND6_IFF_AUTO_LINKLOCAL) {
1409 if (!(ND_IFINFO(ifp)->flags & ND6_IFF_AUTO_LINKLOCAL)) {
1410 /* auto_linklocal 0->1 transision */
1411
1412 /* If no link-local address on ifp, configure */
1413 ND_IFINFO(ifp)->flags |= ND6_IFF_AUTO_LINKLOCAL;
1414 in6_ifattach(ifp, NULL);
1415 } else if (!(ND.flags & ND6_IFF_IFDISABLED) &&
1416 ifp->if_flags & IFF_UP) {
1417 /*
1418 * When the IF already has
1419 * ND6_IFF_AUTO_LINKLOCAL, no link-local
1420 * address is assigned, and IFF_UP, try to
1421 * assign one.
1422 */
1423 int haslinklocal = 0;
1424
1425 IF_ADDR_LOCK(ifp);
1425 IF_ADDR_RLOCK(ifp);
1426 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1427 if (ifa->ifa_addr->sa_family != AF_INET6)
1428 continue;
1429 ia = (struct in6_ifaddr *)ifa;
1430 if (IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia))) {
1431 haslinklocal = 1;
1432 break;
1433 }
1434 }
1426 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1427 if (ifa->ifa_addr->sa_family != AF_INET6)
1428 continue;
1429 ia = (struct in6_ifaddr *)ifa;
1430 if (IN6_IS_ADDR_LINKLOCAL(IA6_IN6(ia))) {
1431 haslinklocal = 1;
1432 break;
1433 }
1434 }
1435 IF_ADDR_UNLOCK(ifp);
1435 IF_ADDR_RUNLOCK(ifp);
1436 if (!haslinklocal)
1437 in6_ifattach(ifp, NULL);
1438 }
1439 }
1440 }
1441 ND_IFINFO(ifp)->flags = ND.flags;
1442 break;
1443#undef ND

--- 947 unchanged lines hidden --- 		1436 if (!haslinklocal)
1437 in6_ifattach(ifp, NULL);
1438 }
1439 }
1440 }
1441 ND_IFINFO(ifp)->flags = ND.flags;
1442 break;
1443#undef ND

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