bsd/net/route.c

504  * To clear the scope ID, pass is a NULL pifscope.  To set the scope ID, pass
505  * in a non-NULL pifscope with non-zero ifscope.  Otherwise if pifscope is
506  * non-NULL and ifscope is IFSCOPE_NONE, the existing scope ID is left intact.
508  * pifscope, if it is non-NULL.
515 	unsigned int ifscope = (pifscope != NULL) ? *pifscope : IFSCOPE_NONE;
523 		if (pifscope == NULL || ifscope != IFSCOPE_NONE)
527 		if (pifscope != NULL &&
534 			 * passing NULL) or setting it.
546 		} else if (pifscope == NULL || ifscope != IFSCOPE_NONE) {
551 	if (pifscope != NULL) {
645 			ret = sa_copy(sa, ss, NULL);
648 			ret = sa_copy(sa, ss, NULL);
668 		if (hint == NULL ||
766 	if (rte_zone == NULL)
806 	if ((rt = ro->ro_rt) != NULL) {
808 		if (rt->rt_ifp != NULL && (rt->rt_flags & RTF_UP) &&
815 		ro->ro_rt = NULL;
818 	if (ro->ro_rt != NULL) {
864 	struct rtentry *rt, *newrt = NULL;
869 	if (rnh == NULL)
876 	rt = rt_lookup(FALSE, dst, NULL, rnh, ifscope);
877 	if (rt == NULL)
890 		err = rtrequest_locked(RTM_RESOLVE, dst, NULL, NULL, 0, &newrt);
1042 	if (rnh != NULL && rnh->rnh_close != NULL)
1069 		if ((rt_parent = rt->rt_parent) != NULL)
1070 			rt->rt_parent = NULL;
1072 		if ((rt_ifa = rt->rt_ifa) != NULL)
1073 			rt->rt_ifa = NULL;
1078 		if (rt->rt_llinfo != NULL) {
1079 			if (rt->rt_llinfo_free != NULL)
1083 			rt->rt_llinfo = NULL;
1092 		if (rt_parent != NULL)
1095 		if (rt_ifa != NULL)
1233 	struct rtentry *rt = NULL;
1237 	struct ifaddr *ifa = NULL;
1238 	unsigned int ifscope = (ifp != NULL) ? ifp->if_index : IFSCOPE_NONE;
1261 	if ((ifa = ifa_ifwithnet_scoped(gateway, ifscope)) == NULL) {
1268 	if (rt != NULL)
1279 	if (!(flags & RTF_DONE) && rt != NULL &&
1287 			ifa = NULL;
1294 		ifa = NULL;
1298 		if (rt != NULL)
1309 	if ((rt == NULL) || (rt_mask(rt) != NULL && rt_mask(rt)->sa_len < 2))
1325 			if (rt != NULL)
1329 			    gateway, netmask, flags, NULL, ifscope);
1350 	if (rt != NULL) {
1361 		if (stat != NULL)
1430 	struct ifaddr *ifa = NULL;
1431 	struct rtentry *rt = NULL;
1442 	if (dst != NULL &&
1446 	if (dst != NULL && dst->sa_family == AF_INET && ip_doscopedroute)
1448 		dst = sa_copy(SA((uintptr_t)dst), &dst_ss, NULL);
1451 	if (gw != NULL &&
1455 	if (gw != NULL && gw->sa_family == AF_INET && ip_doscopedroute)
1457 		gw = sa_copy(SA((uintptr_t)gw), &gw_ss, NULL);
1470 		if (ifa == NULL)
1480 	if (ifa == NULL)
1482 	if (ifa == NULL) {
1486 		if (rt != NULL) {
1489 			if (ifa != NULL) {
1496 			rt = NULL;
1504 	if (ifa != NULL && ifa->ifa_addr->sa_family != dst->sa_family) {
1508 		if (newifa != NULL) {
1521 	if ((ifa == NULL ||
1524 	    0, 0, ifscope)) != NULL) {
1525 		if (ifa != NULL)
1529 		if (ifa != NULL) {
1543 	    ifa != NULL && ifa->ifa_ifp->if_index != ifscope) {
1545 		ifa = NULL;
1605 	struct ifaddr *ifa = NULL;
1618 	if ((rnh = rt_tables[af]) == NULL)
1625 		netmask = NULL;
1651 		if (netmask != NULL)
1674 		struct rtentry *gwrt = NULL;
1679 		if ((rn = rnh->rnh_deladdr(dst, netmask, rnh)) == NULL)
1726 		if ((gwrt = rt->rt_gwroute) != NULL)
1727 			rt->rt_gwroute = NULL;
1732 		if ((ifa = rt->rt_ifa) != NULL) {
1736 			if (ifa_rtrequest != NULL)
1737 				ifa_rtrequest(RTM_DELETE, rt, NULL);
1739 			ifa = NULL;
1770 		if (gwrt != NULL)
1778 		if (ret_nrt != NULL) {
1788 		if (ret_nrt == NULL || (rt = *ret_nrt) == NULL)
1806 		if ((netmask = rt->rt_genmask) == NULL)
1848 		    NULL : &ifscope);
1851 		if (netmask != NULL)
1866 		if (ifa == NULL)
1870 		if ((rt = rte_alloc()) == NULL)
1955 		if (rn == NULL) {
1957 			rt_set_gwroute(rt, rt_key(rt), NULL);
1960 				rt->rt_ifa = NULL;
1970 		rt->rt_parent = NULL;
1999 			if (rt->rt_parent != NULL &&
2012 		if (ifa_rtrequest != NULL)
2013 			ifa_rtrequest(req, rt, SA(ret_nrt ? *ret_nrt : NULL));
2015 		ifa = NULL;
2040 		if ((rt->rt_flags & RTF_GATEWAY) && rt->rt_gwroute != NULL)
2044 		    !(rt->rt_flags & RTF_HOST) && rt_mask(rt) != NULL) {
2115 		return (rtrequest_locked(RTM_DELETE, rt_key(rt), NULL,
2116 		    rt_mask(rt), rt->rt_flags, NULL));
2171 	 * will be NULL if it is a cloning host route.
2173 	if ((xmp = (u_char *)rt_mask(rt->rt_parent)) != NULL) {
2205 	return (rtrequest_locked(RTM_DELETE, rt_key(rt), NULL,
2206 	    rt_mask(rt), rt->rt_flags, NULL));
2252 			(void) sa_copy(dst, &dst_ss, NULL);
2253 			(void) sa_copy(gate, &gate_ss, NULL);
2284 		if (rt_key(rt) != NULL) {
2292 			    rt->rt_gateway, rt_mask(rt), rt->rt_flags, NULL);
2322 		if (gwrt != NULL)
2353 		    gwrt != NULL && gwrt->rt_ifp != NULL &&
2364 			if (gwrt != NULL)
2371 		/* Set gateway route; callee adds ref to gwrt if non-NULL */
2380 		if (rt_primary_default(rt, dst) && rt->rt_ifp != NULL) {
2394 		    gwrt != NULL && gwrt->rt_gateway->sa_family == AF_LINK &&
2402 		if (gwrt != NULL)
2413 	if (rt->rt_gateway == NULL || glen > SA_SIZE(rt->rt_gateway->sa_len)) {
2418 		if (new == NULL) {
2420 			rt_set_gwroute(rt, dst, NULL);
2429 		 * which case rt_key(rt) is NULL (and so does rt_gateway).
2433 		R_Free(rt_key(rt));	/* free old block; NULL is okay */
2446 	if ((rt->rt_flags & RTF_GATEWAY) && rt->rt_gwroute != NULL &&
2489 	if (gwrt != NULL)
2497 	if (rt->rt_gwroute != NULL) {
2501 		rt->rt_gwroute = NULL;
2505 		VERIFY(rt->rt_gwroute == NULL);
2511 	if ((rt->rt_gwroute = gwrt) != NULL) {
2515 			/* rt_parent might be NULL if rt is embryonic */
2516 			gwrt_isrouter = (rt->rt_parent != NULL &&
2572 		return (NULL);
2580 	dst = sa_copy(dst, &ss, (ifscope == IFSCOPE_NONE) ? NULL : &ifscope);
2583 	if (netmask != NULL)
2587 		f = w = NULL;
2590 	if (rn != NULL && (rn->rn_flags & RNF_ROOT))
2591 		rn = NULL;
2607 	return (af == AF_INET ? rnh->rnh_lookup(&sin_def, NULL, rnh) :
2608 	    rnh->rnh_lookup(&sin6_def, NULL, rnh));
2646 		netmask = NULL;
2665 		if (rn != NULL && (rn->rn_flags & RNF_ROOT))
2666 			rn = NULL;
2667 		if (rn != NULL) {
2674 				rn = NULL;
2682 	if (netmask != NULL)
2718 	if (rn != NULL) {
2729 				rn = NULL;
2733 					rn0 = NULL;
2742 				rn = NULL;
2752 	if (rn == NULL)
2766 	if (rn == NULL || (rn0 != NULL &&
2775 	if (rn == NULL && (rn = node_lookup_default(af)) != NULL &&
2777 		rn = NULL;
2779 	if (rn != NULL) {
2793 			rn = NULL;
2813 		rt = NULL;
2816 	return (rt != NULL);
2864 			if (m == NULL) {
2970 			if (ifa_rtrequest != NULL)
2981 				if (rt->rt_llinfo_purge != NULL)
2986 				if (rt->rt_if_ref_fn != NULL) {
3005 			if (ifa_rtrequest != NULL)
3038 	if (rt->rt_ifp == NULL || rt->rt_ifp->if_want_aggressive_drain == 0)
3062 	if (rt->rt_if_ref_fn != NULL) {
3065 		rt->rt_if_ref_fn = NULL;
3087 		if (rnh != NULL && rt_mask(rt)) {
3227 	if (rte != NULL) {
3280 	if (dst->ro_rt != NULL)
3291 	if (dst->ro_rt == NULL) {
3298 	} else if (src->ro_rt != NULL) {
3314 	src->ro_rt = NULL;
3325  * If the returned route is non-NULL, the caller is responsible for
3339 	*out_route = NULL;
3341 	if (rt == NULL)
3365 		if (hint != NULL) {
3387 		if (gwrt == NULL) {
3403 			rt->rt_gwroute = NULL;
3419 			if (!(rt->rt_flags & RTF_UP) || gwrt == NULL ||
3423 					gwrt = NULL;
3427 				hint = NULL;
3429 				if (gwrt != NULL)
3434 			VERIFY(gwrt != NULL);
3466 			VERIFY(prt != NULL);
3482 		hint = NULL;
3511 	if (rt != NULL) {
3529 	VERIFY(gwrt != NULL);
3534 	    rt_key(gwrt)->sa_family && (rt->rt_gwroute == NULL ||
3545 			(void) sa_copy(rt_key(gwrt), &key_ss, NULL);
3546 			(void) sa_copy(rt->rt_gateway, &gw_ss, NULL);