bsd/netinet6/ip6_forward.c

127 	struct rtentry *rt;
154 	if (ifscope != IFSCOPE_NONE && (rt = ip6forward_rt->ro_rt) != NULL) {
155 		RT_LOCK(rt);
156 		if (rt->rt_ifp->if_index != ifscope) {
157 			RT_UNLOCK(rt);
158 			rtfree(rt);
159 			rt = ip6forward_rt->ro_rt = NULL;
161 			RT_UNLOCK(rt);
193 		/* XXX in6_ifstat_inc(rt->rt_ifp, ifs6_in_discard) */
209 		/* XXX in6_ifstat_inc(rt->rt_ifp, ifs6_in_discard) */
378 	if ((rt = ip6forward_rt->ro_rt) != NULL) {
379 		RT_LOCK(rt);
381 		RT_ADDREF_LOCKED(rt);
388 		if (rt == NULL || !(rt->rt_flags & RTF_UP) ||
389 		    rt->generation_id != route_generation) {
390 			if (rt != NULL) {
392 				RT_REMREF_LOCKED(rt);
393 				RT_UNLOCK(rt);
394 				rtfree(rt);
400 			if ((rt = ip6forward_rt->ro_rt) != NULL) {
401 				RT_LOCK(rt);
403 				RT_ADDREF_LOCKED(rt);
407 		if (rt == NULL) {
416 		RT_LOCK_ASSERT_HELD(rt);
417 	} else if (rt == NULL || !(rt->rt_flags & RTF_UP) ||
419 	    rt->generation_id != route_generation) {
420 		if (rt != NULL) {
422 			RT_REMREF_LOCKED(rt);
423 			RT_UNLOCK(rt);
424 			rtfree(rt);
434 		if ((rt = ip6forward_rt->ro_rt) == NULL) {
443 		RT_LOCK(rt);
445 		RT_ADDREF_LOCKED(rt);
459 	if (in6_setscope(&src_in6, rt->rt_ifp, &outzone)) {
476 		in6_ifstat_inc(rt->rt_ifp, ifs6_in_discard);
486 			    if_name(m->m_pkthdr.rcvif), if_name(rt->rt_ifp));
489 		RT_REMREF_LOCKED(rt);
490 		RT_UNLOCK(rt);
508 	    in6_setscope(&dst_in6, rt->rt_ifp, &outzone) != 0 ||
516 	if (m->m_pkthdr.len > rt->rt_ifp->if_mtu) {
517 		in6_ifstat_inc(rt->rt_ifp, ifs6_in_toobig);
526 			mtu = rt->rt_ifp->if_mtu;
533 			 * encapsulated packet as "rt->rt_ifp".
552 			RT_REMREF_LOCKED(rt);
553 			RT_UNLOCK(rt);
557 			RT_REMREF_LOCKED(rt);
558 			RT_UNLOCK(rt);
564 	if (rt->rt_flags & RTF_GATEWAY)
565 		dst = (struct sockaddr_in6 *)(void *)rt->rt_gateway;
577 	    ip6_sendredirects && rt->rt_ifp == m->m_pkthdr.rcvif && !srcrt &&
578 	    (rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0) {
579 		if ((rt->rt_ifp->if_flags & IFF_POINTOPOINT) != 0) {
590 			RT_REMREF_LOCKED(rt);	/* Release extra ref */
591 			RT_UNLOCK(rt);
606 		ifp = rt->rt_ifp;
608 		RT_UNLOCK(rt);
617 		/* We still have the extra ref on rt */
618 		RT_LOCK(rt);
630 	if ((rt->rt_ifp->if_flags & IFF_LOOPBACK) != 0) {
643 		if ((rt->rt_flags & (RTF_BLACKHOLE|RTF_REJECT)) == 0)
651 				if_name(rt->rt_ifp));
658 		origifp = rt->rt_ifp;
666 	ifp = rt->rt_ifp;
668 	RT_UNLOCK(rt);
676 		RT_REMREF(rt);
697 	error = nd6_output(ifp, origifp, m, dst, rt, NULL);
717 		RT_REMREF(rt);
724 			icmp6_redirect_output(mcopy, rt);
726 			RT_REMREF(rt);
751 	RT_REMREF(rt);
757 	RT_REMREF(rt);