sys/net/route.c

321 	struct rtentry *rt;
323 	if ((rt = ro->ro_rt) != NULL) {
324 		if (rt->rt_ifp != NULL && rt->rt_flags & RTF_UP)
326 		RTFREE(rt);
337 	struct rtentry *rt;
339 	if ((rt = ro->ro_rt) != NULL) {
340 		if (rt->rt_ifp != NULL && rt->rt_flags & RTF_UP)
342 		RTFREE(rt);
440 rtfree(struct rtentry *rt)
444 	KASSERT(rt != NULL,("%s: NULL rt", __func__));
445 	rnh = rt_tables_get_rnh(rt->rt_fibnum, rt_key(rt)->sa_family);
448 	RT_LOCK_ASSERT(rt);
454 	RT_REMREF(rt);
455 	if (rt->rt_refcnt > 0) {
456 		log(LOG_DEBUG, "%s: %p has %d refs\n", __func__, rt, rt->rt_refcnt);
469 	if (rt->rt_refcnt == 0 && rnh->rnh_close)
470 		rnh->rnh_close((struct radix_node *)rt, rnh);
477 	if ((rt->rt_flags & RTF_UP) == 0) {
478 		if (rt->rt_nodes->rn_flags & (RNF_ACTIVE | RNF_ROOT))
486 		if (rt->rt_refcnt < 0) {
487 			printf("rtfree: %p not freed (neg refs)\n", rt);
495 		if (rt->rt_ifa)
496 			ifa_free(rt->rt_ifa);
502 		Free(rt_key(rt));
507 		RT_LOCK_DESTROY(rt);
508 		uma_zfree(V_rtzone, rt);
512 	RT_UNLOCK(rt);
541 	struct rtentry *rt, *rt0 = NULL;
560 	rt = rtalloc1_fib(dst, 0, 0UL, fibnum);	/* NB: rt is locked */
567 	if (!(flags & RTF_DONE) && rt &&
568 	     (!sa_equal(src, rt->rt_gateway) || rt->rt_ifa != ifa))
580 	if (rt == NULL || (rt_mask(rt) && rt_mask(rt)->sa_len < 2))
586 	if (rt->rt_flags & RTF_GATEWAY) {
587 		if (((rt->rt_flags & RTF_HOST) == 0) && (flags & RTF_HOST)) {
593 			rt0 = rt;
594 			rt = NULL;
605 			error = rtrequest1_fib(RTM_ADD, &info, &rt, fibnum);
606 			if (rt != NULL) {
607 				RT_LOCK(rt);
609 					EVENTHANDLER_INVOKE(route_redirect_event, rt0, rt, dst);
610 				flags = rt->rt_flags;
623 			rt->rt_flags |= RTF_MODIFIED;
629 			RT_UNLOCK(rt);
631 			RT_LOCK(rt);
632 			rt_setgate(rt, rt_key(rt), gateway);
635 			EVENTHANDLER_INVOKE(route_redirect_event, rt, gwrt, dst);
641 	if (rt)
642 		RTFREE_LOCKED(rt);
727 		struct rtentry *rt = rtalloc1_fib(gateway, 0, RTF_RNH_LOCKED, fibnum);
728 		if (rt == NULL)
736 			if (satosin(rt_key(rt))->sin_addr.s_addr == INADDR_ANY)
740 			if (IN6_IS_ADDR_UNSPECIFIED(&satosin6(rt_key(rt))->sin6_addr))
746 		if (!not_found && rt->rt_ifa != NULL) {
747 			ifa = rt->rt_ifa;
750 		RT_REMREF(rt);
751 		RT_UNLOCK(rt);
872 rtexpunge(struct rtentry *rt)
888 	rnh = rt_tables_get_rnh(rt->rt_fibnum, rt_key(rt)->sa_family);
889 	RT_LOCK_ASSERT(rt);
895 	fib = rt->rt_fibnum;
897 	info.rti_ifp = rt->rt_ifp;
899 	info.rti_info[RTAX_DST] = rt_key(rt);
900 	info.rti_info[RTAX_GATEWAY] = rt->rt_ifa->ifa_addr;
902 	RT_UNLOCK(rt);
906 		rt = rt0;
907 		RT_LOCK(rt);
909 		RT_LOCK(rt);
917 	rn = rnh->rnh_deladdr(rt_key(rt), rt_mask(rt), rnh);
924 	KASSERT(rt == RNTORT(rn),
925 		("lookup mismatch, rt %p rn %p", rt, rn));
928 	rt->rt_flags &= ~RTF_UP;
933 	if ((ifa = rt->rt_ifa) && ifa->ifa_rtrequest) {
937 		info.rti_flags = rt->rt_flags;
938 		info.rti_info[RTAX_DST] = rt_key(rt);
939 		info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
940 		info.rti_info[RTAX_NETMASK] = rt_mask(rt);
941 		ifa->ifa_rtrequest(RTM_DELETE, rt, &info);
957 int rt_print(char *buf, int buflen, struct rtentry *rt);
983 rt_print(char *buf, int buflen, struct rtentry *rt)
988 	addr = rt_key(rt);
989 	mask = rt_mask(rt);
992 	if (!(rt->rt_flags & RTF_HOST)) {
997 	if (rt->rt_flags & RTF_GATEWAY) {
999 		i += p_sockaddr(buf + i, buflen - i, rt->rt_gateway);
1015 	struct rtentry *rt, *rto = NULL;
1022 	rto = rt = RNTORT(rn);
1024 	rt = rt_mpath_matchgate(rt, gateway);
1025 	if (rt == NULL)
1030 	if (rto == rt) {
1031 		rn = rn_mpath_next((struct radix_node *)rt);
1040 		} else if (rt->rt_flags & RTF_GATEWAY) {
1050 			    (rt->rt_gateway->sa_len != gateway->sa_len ||
1051 				memcmp(rt->rt_gateway, gateway, gateway->sa_len)))
1059 				KASSERT(rt == RNTORT(rn), ("radix node disappeared"));
1078 	if ((req == RTM_DELETE) && !rt_mpath_deldup(rto, rt))
1081 	RT_LOCK(rt);
1082 	RT_ADDREF(rt);
1084 		rt->rt_flags &= ~RTF_UP;
1088 		 * when RTFREE(rt) is eventually called.
1104 		*ret_nrt = rt;
1105 		RT_UNLOCK(rt);
1107 		RTFREE_LOCKED(rt);
1118 	register struct rtentry *rt;
1179 			rt = (struct rtentry *)rnh->rnh_lookup(dst,
1181 			if ((rt != NULL) && (rt->rt_flags & RTF_PINNED))
1194 		rt = RNTORT(rn);
1195 		RT_LOCK(rt);
1196 		RT_ADDREF(rt);
1197 		rt->rt_flags &= ~RTF_UP;
1202 		if ((ifa = rt->rt_ifa) && ifa->ifa_rtrequest)
1203 			ifa->ifa_rtrequest(RTM_DELETE, rt, info);
1208 		 * when RTFREE(rt) is eventually called.
1218 			*ret_nrt = rt;
1219 			RT_UNLOCK(rt);
1221 			RTFREE_LOCKED(rt);
1243 		rt = uma_zalloc(V_rtzone, M_NOWAIT | M_ZERO);
1244 		if (rt == NULL) {
1249 		RT_LOCK_INIT(rt);
1250 		rt->rt_flags = RTF_UP | flags;
1251 		rt->rt_fibnum = fibnum;
1255 		RT_LOCK(rt);
1256 		if ((error = rt_setgate(rt, dst, gateway)) != 0) {
1257 			RT_LOCK_DESTROY(rt);
1260 			uma_zfree(V_rtzone, rt);
1267 		ndst = (struct sockaddr *)rt_key(rt);
1282 		rt->rt_ifa = ifa;
1283 		rt->rt_ifp = ifa->ifa_ifp;
1284 		rt->rt_rmx.rmx_weight = 1;
1289 			rt_mpath_conflict(rnh, rt, netmask)) {
1290 			if (rt->rt_ifa) {
1291 				ifa_free(rt->rt_ifa);
1293 			Free(rt_key(rt));
1294 			RT_LOCK_DESTROY(rt);
1295 			uma_zfree(V_rtzone, rt);
1354 		rn = rnh->rnh_addaddr(ndst, netmask, rnh, rt->rt_nodes);
1360 			if (rt->rt_ifa)
1361 				ifa_free(rt->rt_ifa);
1362 			Free(rt_key(rt));
1363 			RT_LOCK_DESTROY(rt);
1364 			uma_zfree(V_rtzone, rt);
1394 			ifa->ifa_rtrequest(req, rt, info);
1401 			*ret_nrt = rt;
1402 			RT_ADDREF(rt);
1404 		RT_UNLOCK(rt);
1424 rt_setgate(struct rtentry *rt, struct sockaddr *dst, struct sockaddr *gate)
1431 	rnh = rt_tables_get_rnh(rt->rt_fibnum, dst->sa_family);
1434 	RT_LOCK_ASSERT(rt);
1438 	 * Prepare to store the gateway in rt->rt_gateway.
1444 	if (rt->rt_gateway == NULL || glen > SA_SIZE(rt->rt_gateway)) {
1451 		 * XXX note, we copy from *dst and not *rt_key(rt) because
1453 		 * allocated route entry, in which case rt_key(rt) == NULL
1454 		 * (and also rt->rt_gateway == NULL).
1458 		Free(rt_key(rt));	/* free old block, if any */
1459 		rt_key(rt) = (struct sockaddr *)new;
1460 		rt->rt_gateway = (struct sockaddr *)(new + dlen);
1466 	bcopy(gate, rt->rt_gateway, glen);
1500 	struct rtentry *rt = NULL;
1584 					rt = RNTORT(rn);
1587 					 * rt->rt_gateway is sockaddr_intf
1592 					rt = rt_mpath_matchgate(rt,
1594 					if (rt == NULL)
1625 		error = rtrequest1_fib(cmd, &info, &rt, fibnum);
1641 			error = rtrequest1_fib(RTM_DELETE, &info, &rt, fibnum);
1646 				error = rtrequest1_fib(cmd, &info, &rt, fibnum);
1653 		if (error == 0 && rt != NULL) {
1657 			RT_LOCK(rt);
1666 			if (memcmp(rt->rt_ifa->ifa_addr,
1668 				ifa_free(rt->rt_ifa);
1670 				rt->rt_ifp = ifa->ifa_ifp;
1671 				rt->rt_ifa = ifa;
1678 			    ((struct sockaddr_dl *)rt->rt_gateway)->sdl_type  =
1679 				rt->rt_ifp->if_type;
1680 			    ((struct sockaddr_dl *)rt->rt_gateway)->sdl_index =
1681 				rt->rt_ifp->if_index;
1683 			RT_ADDREF(rt);
1684 			RT_UNLOCK(rt);
1685 			rt_newaddrmsg_fib(cmd, ifa, error, rt, fibnum);
1686 			RT_LOCK(rt);
1687 			RT_REMREF(rt);
1694 				RTFREE_LOCKED(rt);
1701 					RT_REMREF(rt);
1703 				RT_UNLOCK(rt);
1800 rt_routemsg(int cmd, struct ifnet *ifp, int error, struct rtentry *rt,
1810 	KASSERT(rt_key(rt) != NULL, (":%s: rt_key must be supplied", __func__));
1812 	return (rtsock_routemsg(cmd, ifp, error, rt, fibnum));
1816 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
1819 	rt_newaddrmsg_fib(cmd, ifa, error, rt, RT_ALL_FIBS);
1827 rt_newaddrmsg_fib(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt,
1838 		if (rt != NULL)
1839 			rt_routemsg(cmd, ifa->ifa_ifp, error, rt, fibnum);
1841 		if (rt != NULL)
1842 			rt_routemsg(cmd, ifa->ifa_ifp, error, rt, fibnum);