diff options
Diffstat (limited to 'sys/netinet6/in6.c')
| -rw-r--r-- | sys/netinet6/in6.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index ae68f26..ee197b6 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -1684,6 +1684,36 @@ in6_localip(struct in6_addr *in6) IN6_IFADDR_RUNLOCK(); return (0); } + +/* + * Return 1 if an internet address is configured on an interface. + */ +int +in6_ifhasaddr(struct ifnet *ifp, struct in6_addr *addr) +{ + struct in6_addr in6; + struct ifaddr *ifa; + struct in6_ifaddr *ia6; + + in6 = *addr; + if (in6_clearscope(&in6) || in6_clearscope(&in6)) + return (0); + in6_setscope(&in6, ifp, NULL); + + IF_ADDR_RLOCK(ifp); + TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { + if (ifa->ifa_addr->sa_family != AF_INET6) + continue; + ia6 = (struct in6_ifaddr *)ifa; + if (IN6_ARE_ADDR_EQUAL(&ia6->ia_addr.sin6_addr, &in6)) { + IF_ADDR_RUNLOCK(ifp); + return (1); + } + } + IF_ADDR_RUNLOCK(ifp); + + return (0); +} int in6_is_addr_deprecated(struct sockaddr_in6 *sa6) |
