Function in6ifa_ifwithaddr

freebsd/netinet6/in6.c:1559–1577

* find the interface address corresponding to a given IPv6 address. * ifaddr is returned referenced. */

 * ifaddr is returned referenced.
 */
struct in6_ifaddr *
in6ifa_ifwithaddr(const struct in6_addr *addr, uint32_t zoneid)
{
	struct rm_priotracker in6_ifa_tracker;
	struct in6_ifaddr *ia;

	IN6_IFADDR_RLOCK(&in6_ifa_tracker);
	CK_LIST_FOREACH(ia, IN6ADDR_HASH(addr), ia6_hash) {
		if (IN6_ARE_ADDR_EQUAL(IA6_IN6(ia), addr)) {
			if (zoneid != 0 &&
			    zoneid != ia->ia_addr.sin6_scope_id)
				continue;
			ifa_ref(&ia->ia_ifa);
			break;
		}
	}
	IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);
	return (ia);
}

/*
 * find the internet address corresponding to a given interface and address.