X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/4452a7af2eac33dbad800bcc91f2399d62c18f53..6601e61aa18bf4f09af135ff61fc7f4771d23b06:/bsd/net/route.c

diff --git a/bsd/net/route.c b/bsd/net/route.c
index 7bb3d89be..aaa13c7b8 100644
--- a/bsd/net/route.c
+++ b/bsd/net/route.c
@@ -1,29 +1,23 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_HEADER_START@
  * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1980, 1986, 1991, 1993
@@ -69,6 +63,7 @@
 #include <sys/domain.h>
 #include <sys/syslog.h>
 #include <kern/lock.h>
+#include <kern/zalloc.h>
 
 #include <net/if.h>
 #include <net/route.h>
@@ -93,9 +88,15 @@ lck_grp_attr_t 	*rt_mtx_grp_attr;
 lck_mtx_t 	*route_domain_mtx;	/*### global routing tables mutex for now */
 __private_extern__ int	rttrash = 0;		/* routes not in table but not freed */
 
+static struct zone *rte_zone;			/* special zone for rtentry */
+#define	RTE_ZONE_MAX		65536		/* maximum elements in zone */
+#define	RTE_ZONE_NAME		"rtentry"	/* name of rtentry zone */
+
 static void rt_maskedcopy(struct sockaddr *,
 	    struct sockaddr *, struct sockaddr *);
 static void rtable_init(void **);
+static struct rtentry *rte_alloc(void);
+static void rte_free(struct rtentry *);
 
 __private_extern__ u_long route_generation = 0;
 extern int use_routegenid;
@@ -117,10 +118,14 @@ route_init()
 {
 	rt_mtx_grp_attr = lck_grp_attr_alloc_init();
 
+	lck_grp_attr_setdefault(rt_mtx_grp_attr);
+
 	rt_mtx_grp = lck_grp_alloc_init("route", rt_mtx_grp_attr);
 
 	rt_mtx_attr = lck_attr_alloc_init();
 
+	lck_attr_setdefault(rt_mtx_attr);
+
 	if ((rt_mtx = lck_mtx_alloc_init(rt_mtx_grp, rt_mtx_attr)) == NULL) {
 		printf("route_init: can't alloc rt_mtx\n");
 		return;
@@ -131,6 +136,13 @@ route_init()
 	lck_mtx_unlock(rt_mtx);
 	rtable_init((void **)rt_tables);
 	route_domain_mtx = routedomain.dom_mtx;
+
+	rte_zone = zinit(sizeof (struct rtentry),
+	    RTE_ZONE_MAX * sizeof (struct rtentry), 0, RTE_ZONE_NAME);
+	if (rte_zone == NULL)
+		panic("route_init: failed allocating rte_zone");
+
+	zone_change(rte_zone, Z_EXPAND, TRUE);
 }
 
 /*
@@ -338,7 +350,7 @@ rtfree_locked(rt)
 		/*
 		 * and the rtentry itself of course
 		 */
-		R_Free(rt);
+		rte_free(rt);
 	}
 }
 
@@ -760,8 +772,7 @@ rtrequest_locked(
 			senderr(ENETUNREACH);
 
 	makeroute:
-		R_Malloc(rt, struct rtentry *, sizeof(*rt));
-		if (rt == 0)
+		if ((rt = rte_alloc()) == NULL)
 			senderr(ENOBUFS);
 		Bzero(rt, sizeof(*rt));
 		rt->rt_flags = RTF_UP | flags;
@@ -770,7 +781,7 @@ rtrequest_locked(
 		 * also add the rt_gwroute if possible.
 		 */
 		if ((error = rt_setgate(rt, dst, gateway)) != 0) {
-			R_Free(rt);
+			rte_free(rt);
 			senderr(error);
 		}
 
@@ -835,7 +846,7 @@ rtrequest_locked(
 				ifafree(rt->rt_ifa);
 			}
 			R_Free(rt_key(rt));
-			R_Free(rt);
+			rte_free(rt);
 			senderr(EEXIST);
 		}
 
@@ -1340,3 +1351,19 @@ rtinit_locked(ifa, cmd, flags)
 	}	
 	return (error);
 }
+
+static struct rtentry *
+rte_alloc(void)
+{
+	return ((struct rtentry *)zalloc(rte_zone));
+}
+
+static void
+rte_free(struct rtentry *p)
+{
+	if (p->rt_refcnt != 0)
+		panic("rte_free: rte=%p refcnt=%d non-zero\n", p, p->rt_refcnt);
+
+	bzero((caddr_t)p, sizeof (*p));
+	zfree(rte_zone, p);
+}