xnu-4570.61.1.tar.gz

[apple/xnu.git] / bsd / netinet6 / in6_src.c

diff --git a/bsd/netinet6/in6_src.c b/bsd/netinet6/in6_src.c
index 42fe27ad4e690ebaf8436399e42fe82f25f997af..ab987d2dbb86876af79ba910e8cf64a7a5bc3311 100644 (file)
--- a/bsd/netinet6/in6_src.c
+++ b/bsd/netinet6/in6_src.c
@@ -217,6 +217,58 @@ do { \
        goto out;               /* XXX: we can't use 'break' here */ \
 } while (0)
 
+
+struct ifaddr *
+in6_selectsrc_core_ifa(struct sockaddr_in6 *addr, struct ifnet *ifp, int srcsel_debug) {
+       int err = 0;
+       struct ifnet *src_ifp = NULL;
+       struct in6_addr src_storage = {};
+       struct in6_addr *in6 = NULL;
+       struct ifaddr *ifa = NULL;
+
+       if((in6 = in6_selectsrc_core(addr,
+           (ip6_prefer_tempaddr ? IPV6_SRCSEL_HINT_PREFER_TMPADDR : 0),
+           ifp, 0, &src_storage, &src_ifp, &err, &ifa)) == NULL) {
+               if (err == 0)
+                       err = EADDRNOTAVAIL;
+               VERIFY(src_ifp == NULL);
+               if (ifa != NULL) {
+                       IFA_REMREF(ifa);
+                       ifa = NULL;
+               }
+               goto done;
+       }
+
+       if (src_ifp != ifp) {
+               if (err == 0)
+                       err = ENETUNREACH;
+               if (ifa != NULL) {
+                       IFA_REMREF(ifa);
+                       ifa = NULL;
+               }
+               goto done;
+       }
+
+       VERIFY(ifa != NULL);
+       ifnet_lock_shared(ifp);
+       if ((ifa->ifa_debug & IFD_DETACHING) != 0) {
+               err = EHOSTUNREACH;
+               ifnet_lock_done(ifp);
+               if (ifa != NULL) {
+                       IFA_REMREF(ifa);
+                       ifa = NULL;
+               }
+               goto done;
+       }
+       ifnet_lock_done(ifp);
+
+done:
+       SASEL_LOG("Returned with error: %d", err);
+       if (src_ifp != NULL)
+               ifnet_release(src_ifp);
+       return (ifa);
+}
+
 struct in6_addr *
 in6_selectsrc_core(struct sockaddr_in6 *dstsock, uint32_t hint_mask,
     struct ifnet *ifp, int srcsel_debug, struct in6_addr *src_storage,