bsd/netinet/ip_output.c

227 	struct route *ro,
233 	error = ip_output_list(m0, 0, opt, ro, flags, imo, ipoa);
263 	struct route *ro,
334 		ro = &saved_route;
382 	if (!ro)
431 		if (ro->ro_rt != NULL) {
432 			RT_LOCK_SPIN(ro->ro_rt);
433 			ia = (struct in_ifaddr *)ro->ro_rt->rt_ifa;
436 				RT_CONVERT_LOCK(ro->ro_rt);
439 			RT_UNLOCK(ro->ro_rt);
536 	dst = (struct sockaddr_in *)(void *)&ro->ro_dst;
546 	if (ro->ro_rt != NULL) {
547 		if (ro->ro_rt->generation_id != route_generation &&
563 		if ((ro->ro_rt->rt_flags & RTF_UP) == 0 ||
566 			rtfree(ro->ro_rt);
567 			ro->ro_rt = NULL;
574 		if (!select_srcif && ro->ro_rt != NULL &&
575 		    ro->ro_rt->generation_id != route_generation)
576 			ro->ro_rt->generation_id = route_generation;
578 	if (ro->ro_rt == NULL) {
624 		    (ro->ro_rt == NULL || !(ro->ro_rt->rt_flags & RTF_UP) ||
625 		    ro->ro_rt->generation_id != route_generation ||
626 		    !(ro->ro_flags & ROF_SRCIF_SELECTED))) {
630 			ifa = in_selectsrcif(ip, ro, ifscope);
690 		if (ro->ro_rt == NULL) {
723 				rtalloc_ign(ro, ign);
725 				rtalloc_scoped_ign(ro, ign, ifscope);
732 			if (nocell && ro->ro_rt != NULL) {
733 				RT_LOCK_SPIN(ro->ro_rt);
734 				if (ro->ro_rt->rt_ifp->if_type ==
736 					RT_UNLOCK(ro->ro_rt);
737 					rtfree(ro->ro_rt);
738 					ro->ro_rt = NULL;
740 					RT_UNLOCK(ro->ro_rt);
745 		if (ro->ro_rt == NULL) {
753 		RT_LOCK_SPIN(ro->ro_rt);
754 		ia = ifatoia(ro->ro_rt->rt_ifa);
757 			RT_CONVERT_LOCK(ro->ro_rt);
760 		ifp = ro->ro_rt->rt_ifp;
761 		ro->ro_rt->rt_use++;
762 		if (ro->ro_rt->rt_flags & RTF_GATEWAY) {
764 			    ro->ro_rt->rt_gateway;
766 		if (ro->ro_rt->rt_flags & RTF_HOST) {
767 			isbroadcast = (ro->ro_rt->rt_flags & RTF_BROADCAST);
770 			RT_CONVERT_LOCK(ro->ro_rt);
773 		RT_UNLOCK(ro->ro_rt);
785 		 * still points to the address in "ro".  (It may have been
788 		dst = (struct sockaddr_in *)(void *)&ro->ro_dst;
1009 		args.fwa_ro = ro;
1162 		bzero(&ipsec_state.ro, sizeof(ipsec_state.ro));
1164 		route_copyout(&ipsec_state.ro, ro, sizeof(ipsec_state.ro));
1199 			ipsec_saved_route = ro;
1200 			ro = &ipsec_state.ro;
1203 		ipsec_saved_route = ro;
1204 		ro = &ipsec_state.ro;
1239 	if (ro->ro_rt != NULL && ro->ro_rt->generation_id != route_generation) {
1247 		rtfree(ro->ro_rt);
1248 		ro->ro_rt = NULL;
1253 	if (ro->ro_rt == NULL) {
1265 		RT_LOCK_SPIN(ro->ro_rt);
1266 		ia = ifatoia(ro->ro_rt->rt_ifa);
1269 			RT_CONVERT_LOCK(ro->ro_rt);
1272 		ifp = ro->ro_rt->rt_ifp;
1273 		RT_UNLOCK(ro->ro_rt);
1382 			 * pipe number, m, ifp, ro, dst because these are
1386 			 * XXX note: if the ifp or ro entry are deleted
1389 			args.fwa_ro = ro;
1578 			rtfree(ro->ro_rt);
1579 			ro->ro_rt = ro_fwd->ro_rt;
1704 			if (ro->ro_rt && nstat_collect)
1705 				nstat_route_tx(ro->ro_rt, 1, m->m_pkthdr.len, 0);
1706 			error = dlil_output(ifp, PF_INET, m, ro->ro_rt,
1720 				if (ro->ro_rt && nstat_collect)
1721 					nstat_route_tx(ro->ro_rt, pktcnt, bytecnt, 0);
1724 				    ro->ro_rt, (struct sockaddr *)dst, 0, adv);
1750 		if (ro->ro_rt) {
1751 			RT_LOCK_SPIN(ro->ro_rt);
1752 			if ((ro->ro_rt->rt_flags & (RTF_UP | RTF_HOST))
1753 			    && !(ro->ro_rt->rt_rmx.rmx_locks & RTV_MTU)
1754 			    && (ro->ro_rt->rt_rmx.rmx_mtu > ifp->if_mtu)) {
1755 				ro->ro_rt->rt_rmx.rmx_mtu = ifp->if_mtu;
1757 			RT_UNLOCK(ro->ro_rt);
1793 			if (ro->ro_rt && nstat_collect)
1794 				nstat_route_tx(ro->ro_rt, 1, m->m_pkthdr.len, 0);
1795 			error = dlil_output(ifp, PF_INET, m, ro->ro_rt,
1811 		if (ipsec_state.ro.ro_rt)
1812 			rtfree(ipsec_state.ro.ro_rt);
3101 in_selectsrcif(struct ip *ip, struct route *ro, unsigned int ifscope)
3114 	if (ro->ro_rt != NULL)
3115 		RT_LOCK(ro->ro_rt);
3117 	rt_ifp = (ro->ro_rt != NULL) ? ro->ro_rt->rt_ifp : NULL;
3126 	if (ifscope != IFSCOPE_NONE || ro->ro_rt != NULL) {
3141 			    ro->ro_rt->generation_id != route_generation)
3164 			if (ro->ro_rt != NULL) {
3196 		if (ifa != NULL && ro->ro_rt == NULL) {
3273 		} else if (ifa != NULL && ro->ro_rt != NULL &&
3274 		    !(ro->ro_rt->rt_flags & RTF_GATEWAY) &&
3275 		    ifa->ifa_ifp != ro->ro_rt->rt_ifp && ipforwarding) {
3283 			ifa = ro->ro_rt->rt_ifa;
3293 	if (ro->ro_rt != NULL)
3294 		RT_LOCK_ASSERT_HELD(ro->ro_rt);
3301 	if (ro->ro_rt != NULL &&
3303 	    !(ro->ro_rt->rt_flags & RTF_UP))) {
3317 		RT_UNLOCK(ro->ro_rt);
3318 		rtfree(ro->ro_rt);
3319 		ro->ro_rt = NULL;
3320 		ro->ro_flags &= ~ROF_SRCIF_SELECTED;
3352 	if (ro->ro_rt != NULL && (!IN_LINKLOCAL(ntohl(dst.s_addr)) ||
3353 	    (ro->ro_rt->rt_gateway->sa_family == AF_LINK &&
3354 	    SDL(ro->ro_rt->rt_gateway)->sdl_alen != 0))) {
3355 		ro->ro_flags |= ROF_SRCIF_SELECTED;
3356 		ro->ro_rt->generation_id = route_generation;
3359 	if (ro->ro_rt != NULL)
3360 		RT_UNLOCK(ro->ro_rt);