xnu-792.24.17.tar.gz

[apple/xnu.git] / bsd / net / route.c

diff --git a/bsd/net/route.c b/bsd/net/route.c
index 7bb3d89becc94701d1d72d894e3b67ee89042b3f..aaa13c7b86075815d3d76fc4fdf3d059769eef14 100644 (file)
--- 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);
+}