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authorPatrick McHardy <kaber@trash.net>2005-12-05 13:33:50 -0800
committerDavid S. Miller <davem@davemloft.net>2005-12-05 13:33:50 -0800
commitafe5c6bb034bfa5824f8e7def6a739653e8f4655 (patch)
treee8fdac508c1691047991578e7109766f22bd1d58 /net
parent3ebbe0cdd41f62e5c79cb4d7aa42a1ca50d7d2f2 (diff)
downloadop-kernel-dev-afe5c6bb034bfa5824f8e7def6a739653e8f4655.zip
op-kernel-dev-afe5c6bb034bfa5824f8e7def6a739653e8f4655.tar.gz
[NETFILTER]: Fix ip_conntrack_flush abuse in ctnetlink
ip_conntrack_flush() used to be part of ip_conntrack_cleanup(), which needs to drop _all_ references on module unload. Table flushed using ctnetlink just needs to clean the table and doesn't need to flush the event cache or wait for any references attached to skbs. Move everything but pure table flushing back to ip_conntrack_cleanup(). Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/ip_conntrack_core.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 7a4ecdd..84c66db 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -1345,6 +1345,11 @@ static int kill_all(struct ip_conntrack *i, void *data)
return 1;
}
+void ip_conntrack_flush(void)
+{
+ ip_ct_iterate_cleanup(kill_all, NULL);
+}
+
static void free_conntrack_hash(struct list_head *hash, int vmalloced,int size)
{
if (vmalloced)
@@ -1354,8 +1359,12 @@ static void free_conntrack_hash(struct list_head *hash, int vmalloced,int size)
get_order(sizeof(struct list_head) * size));
}
-void ip_conntrack_flush(void)
+/* Mishearing the voices in his head, our hero wonders how he's
+ supposed to kill the mall. */
+void ip_conntrack_cleanup(void)
{
+ ip_ct_attach = NULL;
+
/* This makes sure all current packets have passed through
netfilter framework. Roll on, two-stage module
delete... */
@@ -1363,7 +1372,7 @@ void ip_conntrack_flush(void)
ip_ct_event_cache_flush();
i_see_dead_people:
- ip_ct_iterate_cleanup(kill_all, NULL);
+ ip_conntrack_flush();
if (atomic_read(&ip_conntrack_count) != 0) {
schedule();
goto i_see_dead_people;
@@ -1371,14 +1380,7 @@ void ip_conntrack_flush(void)
/* wait until all references to ip_conntrack_untracked are dropped */
while (atomic_read(&ip_conntrack_untracked.ct_general.use) > 1)
schedule();
-}
-/* Mishearing the voices in his head, our hero wonders how he's
- supposed to kill the mall. */
-void ip_conntrack_cleanup(void)
-{
- ip_ct_attach = NULL;
- ip_conntrack_flush();
kmem_cache_destroy(ip_conntrack_cachep);
kmem_cache_destroy(ip_conntrack_expect_cachep);
free_conntrack_hash(ip_conntrack_hash, ip_conntrack_vmalloc,
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