bsd/netinet6/in6_src.c

197  * caller provides a non-NULL ifpp.  The caller is responsible for checking
207 	struct ifnet *ifp = NULL;
208 	struct in6_ifaddr *ia = NULL, *ia_best = NULL;
209 	struct in6_pktinfo *pi = NULL;
211 	struct in6_addrpolicy *dst_policy = NULL, *best_policy = NULL;
223 	if (ifpp != NULL)
224 		*ifpp = NULL;
226 	if (inp != NULL) {
231 		mopts = NULL;
251 			src_storage = NULL;
266 		if (ifp != NULL) {
267 			*errorp = in6_setscope(&srcsock.sin6_addr, ifp, NULL);
269 				src_storage = NULL;
275 		if (ia6 == NULL) {
277 			src_storage = NULL;
287 			src_storage = NULL;
300 	if (inp != NULL && !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
313 		src_storage = NULL;
319 		src_storage = NULL;
326 		struct in6_addrpolicy *new_policy = NULL;
364 		if (ia_best == NULL)
415 		 * Note that best_policy should be non-NULL here.
417 		if (dst_policy == NULL)
439 		    in6_mask2len(&ia_best->ia_prefixmask.sin6_addr, NULL))
441 		if (opts == NULL ||
507 		if (ia_best != NULL)
519 		if (ia_best != NULL)
527 	if (ia_best != NULL &&
531 		ia_best = NULL;
534 	if ((ia = ia_best) == NULL) {
536 		src_storage = NULL;
545 	if (ifpp != NULL) {
546 		/* if ifp is non-NULL, refcnt held in in6_selectif() */
548 	} else if (ifp != NULL) {
565  * a non-NULL retifp.  The caller is responsible for checking if the
577 	struct ifnet *ifp = NULL, *ifp0 = NULL;
578 	struct route_in6 *route = NULL;
580 	struct in6_pktinfo *pi = NULL;
582 	struct ifaddr *ifa = NULL;
602 	if (retifp != NULL)
603 		*retifp = NULL;
605 	if (retrt != NULL)
606 		*retrt = NULL;
610 		src = (srcsock != NULL) ? srcsock->sin6_addr : in6addr_any;
627 	select_srcif = (ip6_doscopedroute && srcsock != NULL &&
639 	if (opts != NULL && (pi = opts->ip6po_pktinfo) != NULL &&
646 		/* ifp may be NULL if detached or out of range */
648 		    ((ifscope <= if_index) ? ifindex2ifnet[ifscope] : NULL);
650 		if (norouteok || retrt == NULL || IN6_IS_ADDR_MULTICAST(dst)) {
657 			if (ifp == NULL)
669 	if (IN6_IS_ADDR_MULTICAST(dst) && mopts != NULL) {
671 		if ((ifp = ifp0 = mopts->im6o_multicast_ifp) != NULL) {
694 	if (!select_srcif || (ro != NULL && ro->ro_rt != NULL &&
698 		if (ro != NULL && ro->ro_rt != NULL) {
712 	if (ifscope != IFSCOPE_NONE || (ro != NULL && ro->ro_rt != NULL)) {
716 		rt_ifp = (ro->ro_rt != NULL) ? ro->ro_rt->rt_ifp : NULL;
742 		if (ifa == NULL && ip6_forwarding && nd6_prproxy) {
745 			if (ifa != NULL && !(proxied_ifa =
748 				ifa = NULL;
752 		if (ip6_select_srcif_debug && ifa != NULL) {
753 			if (ro->ro_rt != NULL) {
776 	if (ifa == NULL && ifscope == IFSCOPE_NONE) {
779 		if (ip6_select_srcif_debug && ifa != NULL) {
787 	if (ifa != NULL && !proxied_ifa)
794 	if (opts != NULL && opts->ip6po_nexthop != NULL) {
810 		if (ron->ro_rt != NULL)
812 		if ((ron->ro_rt != NULL &&
816 		    (select_srcif && (ifa == NULL ||
820 			if (ron->ro_rt != NULL) {
823 				ron->ro_rt = NULL;
827 		if (ron->ro_rt == NULL) {
829 			if (ron->ro_rt != NULL)
831 			if (ron->ro_rt == NULL ||
835 				if (ron->ro_rt != NULL) {
838 					ron->ro_rt = NULL;
868 	if (ro == NULL)
870 	if (ro->ro_rt != NULL)
872 	if (ro->ro_rt != NULL && (!(ro->ro_rt->rt_flags & RTF_UP) ||
876 	    (select_srcif && (ifa == NULL ||
880 		ro->ro_rt = NULL;
882 	if (ro->ro_rt == NULL) {
885 		if (ro->ro_rt != NULL)
899 		if (ro->ro_rt != NULL)
907 	if (opts != NULL && opts->ip6po_nexthop != NULL) {
908 		if (ro->ro_rt != NULL)
913 	if (ro->ro_rt != NULL) {
923 		boolean_t has_route = (route != NULL && route->ro_rt != NULL);
934 		if (has_route && (ifa == NULL ||
943 			if (ifa != NULL && proxied_ifa &&
949 					if (ifa != NULL) {
965 				route->ro_rt = NULL;
969 				route = NULL;
970 				ifp = NULL;	/* ditch ifp; keep ifp0 */
984 		if (ro->ro_rt != NULL)
986 		if (ifp != NULL && opts != NULL &&
987 		    opts->ip6po_pktinfo != NULL &&
1007 		    ((ifp != NULL && ifp->if_type == IFT_CELLULAR) ||
1008 		    (route != NULL && route->ro_rt != NULL &&
1010 			if (route != NULL && route->ro_rt != NULL) {
1012 				route->ro_rt = NULL;
1014 				route = NULL;
1016 			ifp = NULL;	/* ditch ifp; keep ifp0 */
1021 	if (ifp == NULL && (route == NULL || route->ro_rt == NULL)) {
1034 	 * releasing the ifp if it is non-NULL.
1037 	if (retifp != NULL) {
1038 		if (ifp != NULL)
1044 		if (retrt != NULL && route != NULL)
1045 			*retrt = route->ro_rt;	/* ro_rt may be NULL */
1049 		    (ifa != NULL) ? if_name(ifa->ifa_ifp) : "NONE",
1050 		    (ifp != NULL) ? if_name(ifp) : "NONE", error);
1053 	if (ifa != NULL)
1061  * caller provides a non-NULL retifp.  The caller is responsible for checking
1071 	struct rtentry *rt = NULL;
1073 	if (ro == NULL) {
1078 	if ((err = selectroute(NULL, dstsock, opts, mopts, ro, retifp,
1111 	if (rt != NULL && rt->rt_ifa != NULL && rt->rt_ifa->ifa_ifp != NULL &&
1112 	    retifp != NULL) {
1114 		if (*retifp != NULL)
1125 	 * caller is responsible for releasing it if non-NULL.
1132  * caller provides a non-NULL retifp.  The caller is responsible for checking
1255 				inp->in6p_last_outifp = NULL;
1279 				inp->in6p_last_outifp = NULL;
1296 		inp->in6p_last_outifp = NULL;
1435 	struct in6_addrpolicy *match = NULL;
1440 	if (match == NULL)
1453 	struct in6_addrpolicy *bestpol = NULL, *pol;
1480 		if (bestpol == NULL ||
1543 	if (pol == NULL) {
1550 	pol = NULL;
1624 	if (in6_mask2len(&ent0.addrmask.sin6_addr, NULL) < 0)
1674 	struct ifnet *ifp = NULL;
1676 	struct ip6_pktopts *optp = NULL;
1680 	if (ifpp != NULL)
1681 		*ifpp = NULL;
1695 		struct ifnet *im6o_multicast_ifp = NULL;
1697 		if (in6p != NULL && IN6_IS_ADDR_MULTICAST(in6) &&
1698 		    in6p->in6p_moptions != NULL) {
1718 		    in6p->in6p_moptions != NULL && im6o_multicast_ifp != NULL) {
1737 		if (ifpp != NULL) {
1738 			if (ifp != NULL)