diff options
Diffstat (limited to 'sys/netinet6/in6.c')
| -rw-r--r-- | sys/netinet6/in6.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index e4f200b54a3..f729b1ec5fb 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -1,4 +1,4 @@ -/* $OpenBSD: in6.c,v 1.78 2008/07/13 20:41:39 claudio Exp $ */ +/* $OpenBSD: in6.c,v 1.79 2008/10/01 21:17:06 claudio Exp $ */ /* $KAME: in6.c,v 1.372 2004/06/14 08:14:21 itojun Exp $ */ /* @@ -1944,6 +1944,31 @@ in6ifa_ifpwithaddr(struct ifnet *ifp, struct in6_addr *addr) } /* + * find the internet address on a given interface corresponding to a neighbor's + * address. + */ +struct in6_ifaddr * +in6ifa_ifplocaladdr(const struct ifnet *ifp, const struct in6_addr *addr) +{ + struct ifaddr *ifa; + struct in6_ifaddr *ia; + + 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; + } + + return NULL; +} + +/* * Convert IP6 address to printable (loggable) representation. */ static char digits[] = "0123456789abcdef"; |