in6.c (1331bbc33fba4b3c6d9e3e1d93b166089b744e74) in6.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

--- 964 unchanged lines hidden (view full) ---

973 ia->ia_ifa.ifa_dstaddr =
974 (struct sockaddr *)&ia->ia_dstaddr;
975 } else {
976 ia->ia_ifa.ifa_dstaddr = NULL;
977 }
978 ia->ia_ifa.ifa_netmask = (struct sockaddr *)&ia->ia_prefixmask;
979 ia->ia_ifp = ifp;
980 ifa_ref(&ia->ia_ifa); /* if_addrhead */
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

--- 964 unchanged lines hidden (view full) ---

973 ia->ia_ifa.ifa_dstaddr =
974 (struct sockaddr *)&ia->ia_dstaddr;
975 } else {
976 ia->ia_ifa.ifa_dstaddr = NULL;
977 }
978 ia->ia_ifa.ifa_netmask = (struct sockaddr *)&ia->ia_prefixmask;
979 ia->ia_ifp = ifp;
980 ifa_ref(&ia->ia_ifa); /* if_addrhead */
981 IF_ADDR_LOCK(ifp);
981 IF_ADDR_WLOCK(ifp);
982 TAILQ_INSERT_TAIL(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
982 TAILQ_INSERT_TAIL(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
983 IF_ADDR_UNLOCK(ifp);
983 IF_ADDR_WUNLOCK(ifp);
984
985 ifa_ref(&ia->ia_ifa); /* in6_ifaddrhead */
986 IN6_IFADDR_WLOCK();
987 TAILQ_INSERT_TAIL(&V_in6_ifaddrhead, ia, ia_link);
988 IN6_IFADDR_WUNLOCK();
989 }
990
991 /* update timestamp */

--- 338 unchanged lines hidden (view full) ---

1330 if (ifa->ifa_carp)
1331 (*carp_detach_p)(ifa);
1332
1333 /*
1334 * find another IPv6 address as the gateway for the
1335 * link-local and node-local all-nodes multicast
1336 * address routes
1337 */
984
985 ifa_ref(&ia->ia_ifa); /* in6_ifaddrhead */
986 IN6_IFADDR_WLOCK();
987 TAILQ_INSERT_TAIL(&V_in6_ifaddrhead, ia, ia_link);
988 IN6_IFADDR_WUNLOCK();
989 }
990
991 /* update timestamp */

--- 338 unchanged lines hidden (view full) ---

1330 if (ifa->ifa_carp)
1331 (*carp_detach_p)(ifa);
1332
1333 /*
1334 * find another IPv6 address as the gateway for the
1335 * link-local and node-local all-nodes multicast
1336 * address routes
1337 */
1338 IF_ADDR_LOCK(ifp);
1338 IF_ADDR_RLOCK(ifp);
1339 TAILQ_FOREACH(ifa0, &ifp->if_addrhead, ifa_link) {
1340 if ((ifa0->ifa_addr->sa_family != AF_INET6) ||
1341 memcmp(&satosin6(ifa0->ifa_addr)->sin6_addr,
1342 &ia->ia_addr.sin6_addr,
1343 sizeof(struct in6_addr)) == 0)
1344 continue;
1345 else
1346 break;
1347 }
1348 if (ifa0 != NULL)
1349 ifa_ref(ifa0);
1339 TAILQ_FOREACH(ifa0, &ifp->if_addrhead, ifa_link) {
1340 if ((ifa0->ifa_addr->sa_family != AF_INET6) ||
1341 memcmp(&satosin6(ifa0->ifa_addr)->sin6_addr,
1342 &ia->ia_addr.sin6_addr,
1343 sizeof(struct in6_addr)) == 0)
1344 continue;
1345 else
1346 break;
1347 }
1348 if (ifa0 != NULL)
1349 ifa_ref(ifa0);
1350 IF_ADDR_UNLOCK(ifp);
1350 IF_ADDR_RUNLOCK(ifp);
1351
1352 /*
1353 * Remove the loopback route to the interface address.
1354 * The check for the current setting of "nd6_useloopback"
1355 * is not needed.
1356 */
1357 if (ia->ia_flags & IFA_RTSELF) {
1358 error = ifa_del_loopback_route((struct ifaddr *)ia,

--- 153 unchanged lines hidden (view full) ---

1512 in6_unlink_ifa(ia, ifp);
1513}
1514
1515static void
1516in6_unlink_ifa(struct in6_ifaddr *ia, struct ifnet *ifp)
1517{
1518 int s = splnet();
1519
1351
1352 /*
1353 * Remove the loopback route to the interface address.
1354 * The check for the current setting of "nd6_useloopback"
1355 * is not needed.
1356 */
1357 if (ia->ia_flags & IFA_RTSELF) {
1358 error = ifa_del_loopback_route((struct ifaddr *)ia,

--- 153 unchanged lines hidden (view full) ---

1512 in6_unlink_ifa(ia, ifp);
1513}
1514
1515static void
1516in6_unlink_ifa(struct in6_ifaddr *ia, struct ifnet *ifp)
1517{
1518 int s = splnet();
1519
1520 IF_ADDR_LOCK(ifp);
1520 IF_ADDR_WLOCK(ifp);
1521 TAILQ_REMOVE(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
1521 TAILQ_REMOVE(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
1522 IF_ADDR_UNLOCK(ifp);
1522 IF_ADDR_WUNLOCK(ifp);
1523 ifa_free(&ia->ia_ifa); /* if_addrhead */
1524
1525 /*
1526 * Defer the release of what might be the last reference to the
1527 * in6_ifaddr so that it can't be freed before the remainder of the
1528 * cleanup.
1529 */
1530 IN6_IFADDR_WLOCK();

--- 210 unchanged lines hidden (view full) ---

1741 in6_prefixlen2mask(&mask, 128);
1742 sin6 = (struct sockaddr_in6 *)&iflr->addr;
1743 bcopy(&sin6->sin6_addr, &match, sizeof(match));
1744
1745 cmp = 1;
1746 }
1747 }
1748
1523 ifa_free(&ia->ia_ifa); /* if_addrhead */
1524
1525 /*
1526 * Defer the release of what might be the last reference to the
1527 * in6_ifaddr so that it can't be freed before the remainder of the
1528 * cleanup.
1529 */
1530 IN6_IFADDR_WLOCK();

--- 210 unchanged lines hidden (view full) ---

1741 in6_prefixlen2mask(&mask, 128);
1742 sin6 = (struct sockaddr_in6 *)&iflr->addr;
1743 bcopy(&sin6->sin6_addr, &match, sizeof(match));
1744
1745 cmp = 1;
1746 }
1747 }
1748
1749 IF_ADDR_LOCK(ifp);
1749 IF_ADDR_RLOCK(ifp);
1750 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1751 if (ifa->ifa_addr->sa_family != AF_INET6)
1752 continue;
1753 if (!cmp)
1754 break;
1755
1756 /*
1757 * XXX: this is adhoc, but is necessary to allow

--- 6 unchanged lines hidden (view full) ---

1764 candidate.s6_addr32[1] &= mask.s6_addr32[1];
1765 candidate.s6_addr32[2] &= mask.s6_addr32[2];
1766 candidate.s6_addr32[3] &= mask.s6_addr32[3];
1767 if (IN6_ARE_ADDR_EQUAL(&candidate, &match))
1768 break;
1769 }
1770 if (ifa != NULL)
1771 ifa_ref(ifa);
1750 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1751 if (ifa->ifa_addr->sa_family != AF_INET6)
1752 continue;
1753 if (!cmp)
1754 break;
1755
1756 /*
1757 * XXX: this is adhoc, but is necessary to allow

--- 6 unchanged lines hidden (view full) ---

1764 candidate.s6_addr32[1] &= mask.s6_addr32[1];
1765 candidate.s6_addr32[2] &= mask.s6_addr32[2];
1766 candidate.s6_addr32[3] &= mask.s6_addr32[3];
1767 if (IN6_ARE_ADDR_EQUAL(&candidate, &match))
1768 break;
1769 }
1770 if (ifa != NULL)
1771 ifa_ref(ifa);
1772 IF_ADDR_UNLOCK(ifp);
1772 IF_ADDR_RUNLOCK(ifp);
1773 if (!ifa)
1774 return EADDRNOTAVAIL;
1775 ia = ifa2ia6(ifa);
1776
1777 if (cmd == SIOCGLIFADDR) {
1778 int error;
1779
1780 /* fill in the if_laddrreq structure */

--- 67 unchanged lines hidden (view full) ---

1848 int s = splimp();
1849 struct ifaddr *ifa;
1850
1851 /*
1852 * Give the interface a chance to initialize
1853 * if this is its first address,
1854 * and to validate the address if necessary.
1855 */
1773 if (!ifa)
1774 return EADDRNOTAVAIL;
1775 ia = ifa2ia6(ifa);
1776
1777 if (cmd == SIOCGLIFADDR) {
1778 int error;
1779
1780 /* fill in the if_laddrreq structure */

--- 67 unchanged lines hidden (view full) ---

1848 int s = splimp();
1849 struct ifaddr *ifa;
1850
1851 /*
1852 * Give the interface a chance to initialize
1853 * if this is its first address,
1854 * and to validate the address if necessary.
1855 */
1856 IF_ADDR_LOCK(ifp);
1856 IF_ADDR_RLOCK(ifp);
1857 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1858 if (ifa->ifa_addr->sa_family != AF_INET6)
1859 continue;
1860 ifacount++;
1861 }
1857 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1858 if (ifa->ifa_addr->sa_family != AF_INET6)
1859 continue;
1860 ifacount++;
1861 }
1862 IF_ADDR_UNLOCK(ifp);
1862 IF_ADDR_RUNLOCK(ifp);
1863
1864 ia->ia_addr = *sin6;
1865
1866 if (ifacount <= 1 && ifp->if_ioctl) {
1867 error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia);
1868 if (error) {
1869 splx(s);
1870 return (error);

--- 54 unchanged lines hidden (view full) ---

1925 * Find an IPv6 interface link-local address specific to an interface.
1926 * ifaddr is returned referenced.
1927 */
1928struct in6_ifaddr *
1929in6ifa_ifpforlinklocal(struct ifnet *ifp, int ignoreflags)
1930{
1931 struct ifaddr *ifa;
1932
1863
1864 ia->ia_addr = *sin6;
1865
1866 if (ifacount <= 1 && ifp->if_ioctl) {
1867 error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia);
1868 if (error) {
1869 splx(s);
1870 return (error);

--- 54 unchanged lines hidden (view full) ---

1925 * Find an IPv6 interface link-local address specific to an interface.
1926 * ifaddr is returned referenced.
1927 */
1928struct in6_ifaddr *
1929in6ifa_ifpforlinklocal(struct ifnet *ifp, int ignoreflags)
1930{
1931 struct ifaddr *ifa;
1932
1933 IF_ADDR_LOCK(ifp);
1933 IF_ADDR_RLOCK(ifp);
1934 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1935 if (ifa->ifa_addr->sa_family != AF_INET6)
1936 continue;
1937 if (IN6_IS_ADDR_LINKLOCAL(IFA_IN6(ifa))) {
1938 if ((((struct in6_ifaddr *)ifa)->ia6_flags &
1939 ignoreflags) != 0)
1940 continue;
1941 ifa_ref(ifa);
1942 break;
1943 }
1944 }
1934 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1935 if (ifa->ifa_addr->sa_family != AF_INET6)
1936 continue;
1937 if (IN6_IS_ADDR_LINKLOCAL(IFA_IN6(ifa))) {
1938 if ((((struct in6_ifaddr *)ifa)->ia6_flags &
1939 ignoreflags) != 0)
1940 continue;
1941 ifa_ref(ifa);
1942 break;
1943 }
1944 }
1945 IF_ADDR_UNLOCK(ifp);
1945 IF_ADDR_RUNLOCK(ifp);
1946
1947 return ((struct in6_ifaddr *)ifa);
1948}
1949
1950
1951/*
1952 * find the internet address corresponding to a given interface and address.
1953 * ifaddr is returned referenced.
1954 */
1955struct in6_ifaddr *
1956in6ifa_ifpwithaddr(struct ifnet *ifp, struct in6_addr *addr)
1957{
1958 struct ifaddr *ifa;
1959
1946
1947 return ((struct in6_ifaddr *)ifa);
1948}
1949
1950
1951/*
1952 * find the internet address corresponding to a given interface and address.
1953 * ifaddr is returned referenced.
1954 */
1955struct in6_ifaddr *
1956in6ifa_ifpwithaddr(struct ifnet *ifp, struct in6_addr *addr)
1957{
1958 struct ifaddr *ifa;
1959
1960 IF_ADDR_LOCK(ifp);
1960 IF_ADDR_RLOCK(ifp);
1961 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1962 if (ifa->ifa_addr->sa_family != AF_INET6)
1963 continue;
1964 if (IN6_ARE_ADDR_EQUAL(addr, IFA_IN6(ifa))) {
1965 ifa_ref(ifa);
1966 break;
1967 }
1968 }
1961 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1962 if (ifa->ifa_addr->sa_family != AF_INET6)
1963 continue;
1964 if (IN6_ARE_ADDR_EQUAL(addr, IFA_IN6(ifa))) {
1965 ifa_ref(ifa);
1966 break;
1967 }
1968 }
1969 IF_ADDR_UNLOCK(ifp);
1969 IF_ADDR_RUNLOCK(ifp);
1970
1971 return ((struct in6_ifaddr *)ifa);
1972}
1973
1974/*
1975 * Convert IP6 address to printable (loggable) representation. Caller
1976 * has to make sure that ip6buf is at least INET6_ADDRSTRLEN long.
1977 */

--- 224 unchanged lines hidden (view full) ---

2202 dep[0] = dep[1] = NULL;
2203
2204 /*
2205 * We first look for addresses in the same scope.
2206 * If there is one, return it.
2207 * If two or more, return one which matches the dst longest.
2208 * If none, return one of global addresses assigned other ifs.
2209 */
1970
1971 return ((struct in6_ifaddr *)ifa);
1972}
1973
1974/*
1975 * Convert IP6 address to printable (loggable) representation. Caller
1976 * has to make sure that ip6buf is at least INET6_ADDRSTRLEN long.
1977 */

--- 224 unchanged lines hidden (view full) ---

2202 dep[0] = dep[1] = NULL;
2203
2204 /*
2205 * We first look for addresses in the same scope.
2206 * If there is one, return it.
2207 * If two or more, return one which matches the dst longest.
2208 * If none, return one of global addresses assigned other ifs.
2209 */
2210 IF_ADDR_LOCK(ifp);
2210 IF_ADDR_RLOCK(ifp);
2211 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2212 if (ifa->ifa_addr->sa_family != AF_INET6)
2213 continue;
2214 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_ANYCAST)
2215 continue; /* XXX: is there any case to allow anycast? */
2216 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_NOTREADY)
2217 continue; /* don't use this interface */
2218 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_DETACHED)

--- 17 unchanged lines hidden (view full) ---

2236 besta = (struct in6_ifaddr *)ifa;
2237 }
2238 } else
2239 besta = (struct in6_ifaddr *)ifa;
2240 }
2241 }
2242 if (besta) {
2243 ifa_ref(&besta->ia_ifa);
2211 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2212 if (ifa->ifa_addr->sa_family != AF_INET6)
2213 continue;
2214 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_ANYCAST)
2215 continue; /* XXX: is there any case to allow anycast? */
2216 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_NOTREADY)
2217 continue; /* don't use this interface */
2218 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_DETACHED)

--- 17 unchanged lines hidden (view full) ---

2236 besta = (struct in6_ifaddr *)ifa;
2237 }
2238 } else
2239 besta = (struct in6_ifaddr *)ifa;
2240 }
2241 }
2242 if (besta) {
2243 ifa_ref(&besta->ia_ifa);
2244 IF_ADDR_UNLOCK(ifp);
2244 IF_ADDR_RUNLOCK(ifp);
2245 return (besta);
2246 }
2247
2248 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2249 if (ifa->ifa_addr->sa_family != AF_INET6)
2250 continue;
2251 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_ANYCAST)
2252 continue; /* XXX: is there any case to allow anycast? */

--- 4 unchanged lines hidden (view full) ---

2257 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_DEPRECATED) {
2258 if (V_ip6_use_deprecated)
2259 dep[1] = (struct in6_ifaddr *)ifa;
2260 continue;
2261 }
2262
2263 if (ifa != NULL)
2264 ifa_ref(ifa);
2245 return (besta);
2246 }
2247
2248 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2249 if (ifa->ifa_addr->sa_family != AF_INET6)
2250 continue;
2251 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_ANYCAST)
2252 continue; /* XXX: is there any case to allow anycast? */

--- 4 unchanged lines hidden (view full) ---

2257 if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_DEPRECATED) {
2258 if (V_ip6_use_deprecated)
2259 dep[1] = (struct in6_ifaddr *)ifa;
2260 continue;
2261 }
2262
2263 if (ifa != NULL)
2264 ifa_ref(ifa);
2265 IF_ADDR_UNLOCK(ifp);
2265 IF_ADDR_RUNLOCK(ifp);
2266 return (struct in6_ifaddr *)ifa;
2267 }
2266 return (struct in6_ifaddr *)ifa;
2267 }
2268 IF_ADDR_UNLOCK(ifp);
2268 IF_ADDR_RUNLOCK(ifp);
2269
2270 /* use the last-resort values, that are, deprecated addresses */
2271 if (dep[0])
2272 return dep[0];
2273 if (dep[1])
2274 return dep[1];
2275
2276 return NULL;
2277}
2278
2279/*
2280 * perform DAD when interface becomes IFF_UP.
2281 */
2282void
2283in6_if_up(struct ifnet *ifp)
2284{
2285 struct ifaddr *ifa;
2286 struct in6_ifaddr *ia;
2287
2269
2270 /* use the last-resort values, that are, deprecated addresses */
2271 if (dep[0])
2272 return dep[0];
2273 if (dep[1])
2274 return dep[1];
2275
2276 return NULL;
2277}
2278
2279/*
2280 * perform DAD when interface becomes IFF_UP.
2281 */
2282void
2283in6_if_up(struct ifnet *ifp)
2284{
2285 struct ifaddr *ifa;
2286 struct in6_ifaddr *ia;
2287
2288 IF_ADDR_LOCK(ifp);
2288 IF_ADDR_RLOCK(ifp);
2289 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2290 if (ifa->ifa_addr->sa_family != AF_INET6)
2291 continue;
2292 ia = (struct in6_ifaddr *)ifa;
2293 if (ia->ia6_flags & IN6_IFF_TENTATIVE) {
2294 /*
2295 * The TENTATIVE flag was likely set by hand
2296 * beforehand, implicitly indicating the need for DAD.
2297 * We may be able to skip the random delay in this
2298 * case, but we impose delays just in case.
2299 */
2300 nd6_dad_start(ifa,
2301 arc4random() % (MAX_RTR_SOLICITATION_DELAY * hz));
2302 }
2303 }
2289 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2290 if (ifa->ifa_addr->sa_family != AF_INET6)
2291 continue;
2292 ia = (struct in6_ifaddr *)ifa;
2293 if (ia->ia6_flags & IN6_IFF_TENTATIVE) {
2294 /*
2295 * The TENTATIVE flag was likely set by hand
2296 * beforehand, implicitly indicating the need for DAD.
2297 * We may be able to skip the random delay in this
2298 * case, but we impose delays just in case.
2299 */
2300 nd6_dad_start(ifa,
2301 arc4random() % (MAX_RTR_SOLICITATION_DELAY * hz));
2302 }
2303 }
2304 IF_ADDR_UNLOCK(ifp);
2304 IF_ADDR_RUNLOCK(ifp);
2305
2306 /*
2307 * special cases, like 6to4, are handled in in6_ifattach
2308 */
2309 in6_ifattach(ifp, NULL);
2310}
2311
2312int

--- 485 unchanged lines hidden --- 		2305
2306 /*
2307 * special cases, like 6to4, are handled in in6_ifattach
2308 */
2309 in6_ifattach(ifp, NULL);
2310}
2311
2312int

--- 485 unchanged lines hidden ---