diff options
Diffstat (limited to 'sys/netinet6/in6.c')
| -rw-r--r-- | sys/netinet6/in6.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index 141f2a479b7..12d7026d48d 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -1,4 +1,4 @@ -/* $OpenBSD: in6.c,v 1.90 2011/04/03 13:55:36 stsp Exp $ */ +/* $OpenBSD: in6.c,v 1.91 2011/07/26 21:19:51 bluhm Exp $ */ /* $KAME: in6.c,v 1.372 2004/06/14 08:14:21 itojun Exp $ */ /* @@ -1927,28 +1927,31 @@ in6ifa_ifpwithaddr(struct ifnet *ifp, struct in6_addr *addr) } /* - * find the internet address on a given interface corresponding to a neighbor's - * address. + * Check wether an interface has a prefix by looking up the cloning route. */ -struct in6_ifaddr * -in6ifa_ifplocaladdr(const struct ifnet *ifp, const struct in6_addr *addr) +int +in6_ifpprefix(const struct ifnet *ifp, const struct in6_addr *addr) { - struct ifaddr *ifa; - struct in6_ifaddr *ia; + struct sockaddr_in6 dst; + struct rtentry *rt; + u_int tableid = 0; /* XXX */ - TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) { - if (ifa->ifa_addr == NULL) - continue; /* just for safety */ - if (ifa->ifa_addr->sa_family != AF_INET6) - continue; - ia = (struct in6_ifaddr *)ifa; - if (IN6_ARE_MASKED_ADDR_EQUAL(addr, - &ia->ia_addr.sin6_addr, - &ia->ia_prefixmask.sin6_addr)) - return ia; + bzero(&dst, sizeof(dst)); + dst.sin6_len = sizeof(struct sockaddr_in6); + dst.sin6_family = AF_INET6; + dst.sin6_addr = *addr; + rt = rtalloc1((struct sockaddr *)&dst, RT_NOCLONING, tableid); + + if (rt == NULL) + return (0); + if ((rt->rt_flags & (RTF_CLONING | RTF_CLONED)) == 0 || + rt->rt_ifp != ifp) { + RTFREE(rt); + return (0); } - return NULL; + RTFREE(rt); + return (1); } /* |