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Make rtcache() and rtflush() block IPL_NET while they add/remove 

a route from the cached routes list, so that the list won't change
out from under them.
This commit is contained in:
dyoung 2007-08-30 02:22:29 +00:00
parent b3fc296326
commit a7ae782635
1 changed files with 7 additions and 2 deletions
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9
sys/net/route.c
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@ -1,4 +1,4 @@
/* $NetBSD: route.c,v 1.96 2007/08/30 02:17:35 dyoung Exp $ */
/* $NetBSD: route.c,v 1.97 2007/08/30 02:22:29 dyoung Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -100,7 +100,7 @@
#include "opt_route.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: route.c,v 1.96 2007/08/30 02:17:35 dyoung Exp $");
__KERNEL_RCSID(0, "$NetBSD: route.c,v 1.97 2007/08/30 02:22:29 dyoung Exp $");
#include <sys/param.h>
#include <sys/sysctl.h>
@ -258,6 +258,7 @@ rtflushall(int family)
void
rtflush(struct route *ro)
{
int s = splnet();
KASSERT(ro->ro_rt != NULL);
KASSERT(rtcache_getdst(ro) != NULL);
@ -265,6 +266,7 @@ rtflush(struct route *ro)
ro->ro_rt = NULL;
LIST_REMOVE(ro, ro_rtcache_next);
splx(s);
#if 0
if (rtcache_debug()) {
@ -277,6 +279,7 @@ rtflush(struct route *ro)
void
rtcache(struct route *ro)
{
int s;
struct domain *dom;
KASSERT(ro->ro_rt != NULL);
@ -285,7 +288,9 @@ rtcache(struct route *ro)
if ((dom = pffinddomain(rtcache_getdst(ro)->sa_family)) == NULL)
return;
s = splnet();
LIST_INSERT_HEAD(&dom->dom_rtcache, ro, ro_rtcache_next);
splx(s);
}
/*