back out multiple routing table diffs (3 of 'em) because this makes

'route show' dump out repeated copies of the v6 routing table on ramdisks.
on some architectures it spins forever doing this, on others it just
goes for a long time printing the v6 routes over and over before terminating.
spotted by jmc and krw, backout diff tested by beck.

1 files changed, 20 insertions, 76 deletions

diff --git a/sys/net/route.c b/sys/net/route.c
index d1a459bde51..9b05ced60ce 100644
--- a/sys/net/route.c
+++ b/sys/net/route.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: route.c,v 1.76 2006/06/01 05:21:06 henning Exp $	*/
+/*	$OpenBSD: route.c,v 1.77 2006/06/06 15:36:07 deraadt Exp $	*/
 /*	$NetBSD: route.c,v 1.14 1996/02/13 22:00:46 christos Exp $	*/
 
 /*
@@ -130,12 +130,9 @@ struct ifaddr	*encap_findgwifa(struct sockaddr *);
 
 #define	SA(p) ((struct sockaddr *)(p))
 
-struct	route_cb	   route_cb;
-struct	rtstat		   rtstat;
-struct	radix_node_head	***rt_tables;
-u_int8_t		   af2rtafidx[AF_MAX+1];
-u_int8_t		   rtafidx_max;
-u_int			   rtbl_id_max = 0;
+struct	route_cb	 route_cb;
+struct	rtstat		 rtstat;
+struct	radix_node_head	*rt_tables[AF_MAX+1];
 
 int			rttrash;	/* routes not in table but not freed */
 struct sockaddr		wildcard;	/* zero cookie for wildcard searches */
@@ -143,8 +140,6 @@ struct sockaddr		wildcard;	/* zero cookie for wildcard searches */
 struct pool		rtentry_pool;	/* pool for rtentry structures */
 struct pool		rttimer_pool;	/* pool for rttimer structures */
 
-int	rtable_init(struct radix_node_head ***);
-int	rtable_add(u_int);
 int	okaytoclone(u_int, int);
 int	rtdeletemsg(struct rtentry *);
 int	rtflushclone1(struct radix_node *, void *);
@@ -170,74 +165,23 @@ encap_findgwifa(struct sockaddr *gw)
 }
 #endif
 
-int
-rtable_init(struct radix_node_head ***table)
+void
+rtable_init(void **table)
 {
-	void		**p;
-	struct domain	 *dom;
-
-	if ((p = malloc(sizeof(void *) * (rtafidx_max + 1), M_RTABLE,
-	    M_NOWAIT)) == NULL)
-		return (-1);
-	bzero(p, sizeof(void *) * (rtafidx_max + 1));
-
-	/* 2nd pass: attach */
+	struct domain *dom;
 	for (dom = domains; dom != NULL; dom = dom->dom_next)
 		if (dom->dom_rtattach)
-			dom->dom_rtattach(&p[af2rtafidx[dom->dom_family]],
+			dom->dom_rtattach(&table[dom->dom_family],
 			    dom->dom_rtoffset);
-
-	*table = (struct radix_node_head **)p;
-	return (0);
 }
 
 void
 route_init()
 {
-	struct domain	 *dom;
-
 	pool_init(&rtentry_pool, sizeof(struct rtentry), 0, 0, 0, "rtentpl",
 	    NULL);
 	rn_init();	/* initialize all zeroes, all ones, mask table */
-
-	bzero(af2rtafidx, sizeof(af2rtafidx));
-	rtafidx_max = 0;
-
-	/* find out how many tables to allocate */
-	for (dom = domains; dom != NULL; dom = dom->dom_next)
-		if (dom->dom_rtattach)
-			af2rtafidx[dom->dom_family] = rtafidx_max++;
-
-	if (rtable_add(0) == -1)
-		panic("route_init rtable_add");
-}
-
-int
-rtable_add(u_int id)	/* must be called at splsoftnet */
-{
-	void	*p;
-
-	if (id > RT_TABLEID_MAX)
-		return (-1);
-
-	if (id == 0 || id > rtbl_id_max) {
-		size_t	newlen = sizeof(void *) * (id+1);
-
-		if ((p = malloc(newlen, M_RTABLE, M_NOWAIT)) == NULL)
-			return (-1);
-		bzero(p, newlen);
-		if (id > 0) {
-			bcopy(rt_tables, p, sizeof(void *) * (rtbl_id_max+1));
-			free(rt_tables, M_RTABLE);
-		}
-		rt_tables = p;
-		rtbl_id_max = id;
-	}
-
-	if (rt_tables[id] != NULL)	/* already exists */
-		return (-1);
-
-	return (rtable_init(&rt_tables[id]));
+	rtable_init((void **)rt_tables);
 }
 
 void
@@ -261,14 +205,13 @@ okaytoclone(u_int flags, int howstrict)
 struct rtentry *
 rtalloc2(struct sockaddr *dst, int report, int howstrict)
 {
-	struct radix_node_head	*rnh;
+	struct radix_node_head	*rnh = rt_tables[dst->sa_family];
 	struct rtentry		*rt;
 	struct radix_node	*rn;
 	struct rtentry		*newrt = 0;
 	struct rt_addrinfo	 info;
 	int			 s = splnet(), err = 0, msgtype = RTM_MISS;
 
-	rnh = rt_gettable(dst->sa_family, 0);
 	if (rnh && (rn = rnh->rnh_matchaddr((caddr_t)dst, rnh)) &&
 	    ((rn->rn_flags & RNF_ROOT) == 0)) {
 		newrt = rt = (struct rtentry *)rn;
@@ -314,14 +257,13 @@ rtalloc(struct route *ro)
 struct rtentry *
 rtalloc1(struct sockaddr *dst, int report)
 {
-	struct radix_node_head	*rnh;
+	struct radix_node_head	*rnh = rt_tables[dst->sa_family];
 	struct rtentry		*rt;
 	struct radix_node	*rn;
 	struct rtentry		*newrt = 0;
 	struct rt_addrinfo	 info;
 	int			 s = splsoftnet(), err = 0, msgtype = RTM_MISS;
 
-	rnh = rt_gettable(dst->sa_family, 0);
 	if (rnh && (rn = rnh->rnh_matchaddr((caddr_t)dst, rnh)) &&
 	    ((rn->rn_flags & RNF_ROOT) == 0)) {
 		newrt = rt = (struct rtentry *)rn;
@@ -715,7 +657,7 @@ rtrequest1(int req, struct rt_addrinfo *info, struct rtentry **ret_nrt)
 	struct sockaddr_rtlabel	*sa_rl;
 #define senderr(x) { error = x ; goto bad; }
 
-	if ((rnh = rt_gettable(info->rti_info[RTAX_DST]->sa_family, 0)) == NULL)
+	if ((rnh = rt_tables[info->rti_info[RTAX_DST]->sa_family]) == 0)
 		senderr(EAFNOSUPPORT);
 	if (info->rti_flags & RTF_HOST)
 		info->rti_info[RTAX_NETMASK] = NULL;
@@ -1185,9 +1127,10 @@ rt_timer_add(struct rtentry *rt, void (*func)(struct rtentry *,
 }
 
 struct radix_node_head *
-rt_gettable(sa_family_t af, u_int id)
+rt_gettable(sa_family_t af, int id)
 {
-	return (rt_tables[id][af2rtafidx[af]]);
+	/* ignore id for now */
+	return (rt_tables[af]);
 }
 
 struct radix_node *
@@ -1200,7 +1143,6 @@ rt_lookup(struct sockaddr *dst, struct sockaddr *mask, int tableid)
 
 	return (rnh->rnh_lookup(dst, mask, rnh));
 }
-
 /* ARGSUSED */
 void
 rt_timer_timer(void *arg)
@@ -1317,11 +1259,13 @@ rt_if_remove(struct ifnet *ifp)
 	int			 i;
 	struct radix_node_head	*rnh;
 
-	for (i = 1; i <= AF_MAX; i++)
-		if ((rnh = rt_gettable(i, 0)) != NULL)
+	for (i = 1; i <= AF_MAX; i++) {
+		rnh = rt_tables[i];
+		if (rnh)
 			while ((*rnh->rnh_walktree)(rnh,
 			    rt_if_remove_rtdelete, ifp) == EAGAIN)
-				;	/* nothing */
+				;
+	}
 }
 
 /*