/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000,2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright 1994, 1995 Massachusetts Institute of Technology
#include <sys/socket.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
+#include <kern/lock.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
-extern int in_inithead __P((void **head, int off));
+extern int tvtohz(struct timeval *);
+extern int in_inithead(void **head, int off);
+extern u_long route_generation;
#ifdef __APPLE__
static void in_rtqtimo(void *rock);
* Find out if it is because of an
* ARP entry and delete it if so.
*/
- rt2 = rtalloc1((struct sockaddr *)sin, 0,
+ rt2 = rtalloc1_locked((struct sockaddr *)sin, 0,
RTF_CLONING | RTF_PRCLONING);
if (rt2) {
if (rt2->rt_flags & RTF_LLINFO &&
rt2->rt_flags & RTF_HOST &&
rt2->rt_gateway &&
rt2->rt_gateway->sa_family == AF_LINK) {
- rtrequest(RTM_DELETE,
+ rtrequest_locked(RTM_DELETE,
(struct sockaddr *)rt_key(rt2),
rt2->rt_gateway,
rt_mask(rt2), rt2->rt_flags, 0);
ret = rn_addroute(v_arg, n_arg, head,
treenodes);
}
- rtfree(rt2);
+ rtfree_locked(rt2);
}
}
return ret;
&check_routeselfref , 0, "");
#endif
+__private_extern__ int use_routegenid = 1;
+SYSCTL_INT(_net_inet_ip, OID_AUTO, use_route_genid, CTLFLAG_RW,
+ &use_routegenid , 0, "");
/*
* On last reference drop, mark the route as belong to us so that it can be
* timed out.
*/
static void
-in_clsroute(struct radix_node *rn, struct radix_node_head *head)
+in_clsroute(struct radix_node *rn, __unused struct radix_node_head *head)
{
struct rtentry *rt = (struct rtentry *)rn;
- if(!(rt->rt_flags & RTF_UP))
+ if (!(rt->rt_flags & RTF_UP))
return; /* prophylactic measures */
- if((rt->rt_flags & (RTF_LLINFO | RTF_HOST)) != RTF_HOST)
+ if ((rt->rt_flags & (RTF_LLINFO | RTF_HOST)) != RTF_HOST)
return;
- if((rt->rt_flags & (RTF_WASCLONED | RTPRF_OURS))
- != RTF_WASCLONED)
+ if ((rt->rt_flags & (RTF_WASCLONED | RTPRF_OURS)) != RTF_WASCLONED)
return;
/*
- * As requested by David Greenman:
- * If rtq_reallyold is 0, just delete the route without
- * waiting for a timeout cycle to kill it.
+ * Delete the route immediately if RTF_DELCLONE is set or
+ * if route caching is disabled (rtq_reallyold set to 0).
+ * Otherwise, let it expire and be deleted by in_rtqkill().
*/
- if(rtq_reallyold != 0) {
- rt->rt_flags |= RTPRF_OURS;
- rt->rt_rmx.rmx_expire = time_second + rtq_reallyold;
+ if ((rt->rt_flags & RTF_DELCLONE) || rtq_reallyold == 0) {
+ /*
+ * Delete the route from the radix tree but since we are
+ * called when the route's reference count is 0, don't
+ * deallocate it until we return from this routine by
+ * telling rtrequest that we're interested in it.
+ */
+ if (rtrequest_locked(RTM_DELETE, (struct sockaddr *)rt_key(rt),
+ rt->rt_gateway, rt_mask(rt), rt->rt_flags, &rt) == 0) {
+ /* Now let the caller free it */
+ rtunref(rt);
+ }
} else {
- rtrequest(RTM_DELETE,
- (struct sockaddr *)rt_key(rt),
- rt->rt_gateway, rt_mask(rt),
- rt->rt_flags, 0);
+ struct timeval timenow;
+
+ getmicrotime(&timenow);
+ rt->rt_flags |= RTPRF_OURS;
+ rt->rt_rmx.rmx_expire = timenow.tv_sec + rtq_reallyold;
}
}
struct rtqk_arg *ap = rock;
struct rtentry *rt = (struct rtentry *)rn;
int err;
+ struct timeval timenow;
+
+ getmicrotime(&timenow);
+ lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_OWNED);
- if(rt->rt_flags & RTPRF_OURS) {
+ if (rt->rt_flags & RTPRF_OURS) {
ap->found++;
- if(ap->draining || rt->rt_rmx.rmx_expire <= time_second) {
- if(rt->rt_refcnt > 0)
+ if (ap->draining || rt->rt_rmx.rmx_expire <= timenow.tv_sec) {
+ if (rt->rt_refcnt > 0)
panic("rtqkill route really not free");
- err = rtrequest(RTM_DELETE,
+ err = rtrequest_locked(RTM_DELETE,
(struct sockaddr *)rt_key(rt),
rt->rt_gateway, rt_mask(rt),
rt->rt_flags, 0);
- if(err) {
+ if (err) {
log(LOG_WARNING, "in_rtqkill: error %d\n", err);
} else {
ap->killed++;
}
} else {
- if(ap->updating
- && (rt->rt_rmx.rmx_expire - time_second
+ if (ap->updating
+ && (rt->rt_rmx.rmx_expire - timenow.tv_sec
> rtq_reallyold)) {
- rt->rt_rmx.rmx_expire = time_second
+ rt->rt_rmx.rmx_expire = timenow.tv_sec
+ rtq_reallyold;
}
ap->nextstop = lmin(ap->nextstop,
static void
in_rtqtimo_funnel(void *rock)
{
- boolean_t funnel_state;
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
in_rtqtimo(rock);
- (void) thread_funnel_set(network_flock, FALSE);
}
#define RTQ_TIMEOUT 60*10 /* run no less than once every ten minutes */
struct rtqk_arg arg;
struct timeval atv;
static time_t last_adjusted_timeout = 0;
- int s;
+ struct timeval timenow;
+
+ lck_mtx_lock(rt_mtx);
+ /* Get the timestamp after we acquire the lock for better accuracy */
+ getmicrotime(&timenow);
arg.found = arg.killed = 0;
arg.rnh = rnh;
- arg.nextstop = time_second + rtq_timeout;
+ arg.nextstop = timenow.tv_sec + rtq_timeout;
arg.draining = arg.updating = 0;
- s = splnet();
rnh->rnh_walktree(rnh, in_rtqkill, &arg);
- splx(s);
/*
* Attempt to be somewhat dynamic about this:
* hard.
*/
if((arg.found - arg.killed > rtq_toomany)
- && (time_second - last_adjusted_timeout >= rtq_timeout)
+ && (timenow.tv_sec - last_adjusted_timeout >= rtq_timeout)
&& rtq_reallyold > rtq_minreallyold) {
rtq_reallyold = 2*rtq_reallyold / 3;
if(rtq_reallyold < rtq_minreallyold) {
rtq_reallyold = rtq_minreallyold;
}
- last_adjusted_timeout = time_second;
+ last_adjusted_timeout = timenow.tv_sec;
#if DIAGNOSTIC
log(LOG_DEBUG, "in_rtqtimo: adjusted rtq_reallyold to %d\n",
rtq_reallyold);
#endif
arg.found = arg.killed = 0;
arg.updating = 1;
- s = splnet();
rnh->rnh_walktree(rnh, in_rtqkill, &arg);
- splx(s);
}
atv.tv_usec = 0;
- atv.tv_sec = arg.nextstop - time_second;
+ atv.tv_sec = arg.nextstop - timenow.tv_sec;
+ lck_mtx_unlock(rt_mtx);
timeout(in_rtqtimo_funnel, rock, tvtohz(&atv));
}
{
struct radix_node_head *rnh = rt_tables[AF_INET];
struct rtqk_arg arg;
- int s;
arg.found = arg.killed = 0;
arg.rnh = rnh;
arg.nextstop = 0;
arg.draining = 1;
arg.updating = 0;
- s = splnet();
+ lck_mtx_lock(rt_mtx);
rnh->rnh_walktree(rnh, in_rtqkill, &arg);
- splx(s);
+ lck_mtx_unlock(rt_mtx);
}
/*
* so that behavior is not needed there.
*/
rt->rt_flags &= ~(RTF_CLONING | RTF_PRCLONING);
- err = rtrequest(RTM_DELETE, (struct sockaddr *)rt_key(rt),
+ err = rtrequest_locked(RTM_DELETE, (struct sockaddr *)rt_key(rt),
rt->rt_gateway, rt_mask(rt), rt->rt_flags, 0);
if (err) {
log(LOG_WARNING, "in_ifadownkill: error %d\n", err);
struct in_ifadown_arg arg;
struct radix_node_head *rnh;
+ lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_OWNED);
+
if (ifa->ifa_addr->sa_family != AF_INET)
return 1;
+ /* trigger route cache reevaluation */
+ if (use_routegenid)
+ route_generation++;
+
arg.rnh = rnh = rt_tables[AF_INET];
arg.ifa = ifa;
arg.del = delete;
projects / apple / xnu.git / blobdiff