xnu-517.tar.gz

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

diff --git a/bsd/net/route.c b/bsd/net/route.c
index 5cebf16f6e2a1037b9cfff4df792d34c3da43274..0cb34d42b3fd81d6c41147c31f478a6f694033af 100644 (file)
--- a/bsd/net/route.c
+++ b/bsd/net/route.c
@@ -3,19 +3,22 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * 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.
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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. 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
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -69,6 +72,8 @@
 #include <netinet/in.h>
 #include <netinet/ip_mroute.h>
 
+#include <net/if_dl.h>
+
 #define        SA(p) ((struct sockaddr *)(p))
 
 struct route_cb route_cb;
@@ -81,6 +86,10 @@ static void rt_maskedcopy __P((struct sockaddr *,
            struct sockaddr *, struct sockaddr *));
 static void rtable_init __P((void **));
 
+__private_extern__ u_long route_generation = 0;
+extern int use_routegenid;
+
+
 static void
 rtable_init(table)
        void **table;
@@ -127,6 +136,8 @@ rtalloc_ign(ro, ignore)
                splx(s);
        }
        ro->ro_rt = rtalloc1(&ro->ro_dst, 1, ignore);
+       if (ro->ro_rt)
+               ro->ro_rt->generation_id = route_generation;
 }
 
 /*
@@ -217,11 +228,12 @@ rtfree(rt)
 {
        /*
         * find the tree for that address family
+        * Note: in the case of igmp packets, there might not be an rnh
         */
        register struct radix_node_head *rnh =
                rt_tables[rt_key(rt)->sa_family];
 
-       if (rt == 0 || rnh == 0)
+       if (rt == 0)
                panic("rtfree");
 
        /*
@@ -229,7 +241,7 @@ rtfree(rt)
         * and there is a close function defined, call the close function
         */
        rt->rt_refcnt--;
-       if(rnh->rnh_close && rt->rt_refcnt == 0) {
+       if(rnh && rnh->rnh_close && rt->rt_refcnt == 0) {
                rnh->rnh_close((struct radix_node *)rt, rnh);
        }
 
@@ -714,9 +726,7 @@ rtrequest(req, dst, gateway, netmask, flags, ret_nrt)
                ifaref(ifa);
                rt->rt_ifa = ifa;
                rt->rt_ifp = ifa->ifa_ifp;
-#ifdef __APPLE__
-               rt->rt_dlt = ifa->ifa_dlt; /* dl_tag */
-#endif
+
                /* XXX mtu manipulation will be done in rnh_addaddr -- itojun */
 
                rn = rnh->rnh_addaddr((caddr_t)ndst, (caddr_t)netmask,
@@ -953,7 +963,7 @@ rt_setgate(rt0, dst, gate)
        int dlen = ROUNDUP(dst->sa_len), glen = ROUNDUP(gate->sa_len);
        register struct rtentry *rt = rt0;
        struct radix_node_head *rnh = rt_tables[dst->sa_family];
-
+       extern void kdp_set_gateway_mac (void *gatewaymac);
        /*
         * A host route with the destination equal to the gateway
         * will interfere with keeping LLINFO in the routing
@@ -1032,6 +1042,12 @@ rt_setgate(rt0, dst, gate)
                        rt->rt_gwroute = 0;
                        return EDQUOT; /* failure */
                }
+               /* Tell the kernel debugger about the new default gateway */
+               if ((AF_INET == rt->rt_gateway->sa_family) && 
+                   rt->rt_gwroute && rt->rt_gwroute->rt_gateway && 
+                   (AF_LINK == rt->rt_gwroute->rt_gateway->sa_family)) {
+                 kdp_set_gateway_mac(((struct sockaddr_dl *)rt0->rt_gwroute->rt_gateway)->sdl_data);
+               }
        }
 
        /*
@@ -1163,6 +1179,8 @@ rtinit(ifa, cmd, flags)
                 * notify any listenning routing agents of the change
                 */
                rt_newaddrmsg(cmd, ifa, error, nrt);
+               if (use_routegenid)
+                       route_generation++;
                if (rt->rt_refcnt <= 0) {
                        rt->rt_refcnt++; /* need a 1->0 transition to free */
                        rtfree(rt);
@@ -1203,9 +1221,6 @@ rtinit(ifa, cmd, flags)
                         * we are adding.
                         */
                        rt->rt_ifp = ifa->ifa_ifp;
-#ifdef __APPLE__
-                       rt->rt_dlt = ifa->ifa_dlt;      /* dl_tag */
-#endif
                        rt->rt_rmx.rmx_mtu = ifa->ifa_ifp->if_mtu;      /*XXX*/
                        /*
                         * Now ask the protocol to check if it needs
@@ -1218,6 +1233,8 @@ rtinit(ifa, cmd, flags)
                 * notify any listenning routing agents of the change
                 */
                rt_newaddrmsg(cmd, ifa, error, nrt);
+               if (use_routegenid)
+                       route_generation++;
        }
        return (error);
 }