xnu-4903.221.2.tar.gz

[apple/xnu.git] / bsd / netinet / in.c

diff --git a/bsd/netinet/in.c b/bsd/netinet/in.c
index cbb7f8cb64445a163d00e5474216afc675a64b61..61de1526df04ec9f5e95c7dc0220f06bcc387112 100644 (file)
--- a/bsd/netinet/in.c
+++ b/bsd/netinet/in.c
@@ -2603,3 +2603,57 @@ in_lltattach(struct ifnet *ifp)
 
        return (llt);
 }
+
+struct in_ifaddr*
+inifa_ifpwithflag(struct ifnet * ifp, uint32_t flag)
+{
+       struct ifaddr *ifa;
+
+       ifnet_lock_shared(ifp);
+       TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_link)
+       {
+               IFA_LOCK_SPIN(ifa);
+               if (ifa->ifa_addr->sa_family != AF_INET) {
+                       IFA_UNLOCK(ifa);
+                       continue;
+               }
+               if ((((struct in_ifaddr *)ifa)->ia_flags & flag) == flag) {
+                       IFA_ADDREF_LOCKED(ifa);
+                       IFA_UNLOCK(ifa);
+                       break;
+               }
+               IFA_UNLOCK(ifa);
+       }
+       ifnet_lock_done(ifp);
+
+       return ((struct in_ifaddr *)ifa);
+}
+
+struct in_ifaddr *
+inifa_ifpclatv4(struct ifnet * ifp)
+{
+       struct ifaddr *ifa;
+
+       ifnet_lock_shared(ifp);
+       TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_link)
+       {
+               uint32_t addr = 0;
+               IFA_LOCK_SPIN(ifa);
+               if (ifa->ifa_addr->sa_family != AF_INET) {
+                       IFA_UNLOCK(ifa);
+                       continue;
+               }
+
+               addr = ntohl(SIN(ifa->ifa_addr)->sin_addr.s_addr);
+               if (!IN_LINKLOCAL(addr) &&
+                   !IN_LOOPBACK(addr)) {
+                       IFA_ADDREF_LOCKED(ifa);
+                       IFA_UNLOCK(ifa);
+                       break;
+               }
+               IFA_UNLOCK(ifa);
+       }
+       ifnet_lock_done(ifp);
+
+       return ((struct in_ifaddr *)ifa);
+}