Function ifa_ifwithaddr

freebsd/net/if.c:1902–1929

* Locate an interface based on a complete address. */ ARGSUSED*/

 */
/*ARGSUSED*/
struct ifaddr *
ifa_ifwithaddr(const struct sockaddr *addr)
{
	struct ifnet *ifp;
	struct ifaddr *ifa;

	NET_EPOCH_ASSERT();

	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
		CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
			if (ifa->ifa_addr->sa_family != addr->sa_family)
				continue;
			if (sa_equal(addr, ifa->ifa_addr)) {
				goto done;
			}
			/* IP6 doesn't have broadcast */
			if ((ifp->if_flags & IFF_BROADCAST) &&
			    ifa->ifa_broadaddr &&
			    ifa->ifa_broadaddr->sa_len != 0 &&
			    sa_equal(ifa->ifa_broadaddr, addr)) {
				goto done;
			}
		}
	}
	ifa = NULL;
done:
	return (ifa);
}

int
ifa_ifwithaddr_check(const struct sockaddr *addr)