From: Florian Westphal <f...@strlen.de>
commit 2c41f33c1b7030448212cdacd40e80796e347eac upstream.
We only need to iterate & remove in case of module removal;
for netns destruction all conntracks will be removed anyway.
Signed-off-by: Florian Westphal <f...@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
Signed-off-by: Liwei Song <liwei.s...@windriver.com>
---
net/netfilter/nf_conntrack_proto.c | 26 +++++++++++++++++---------
1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto.c
b/net/netfilter/nf_conntrack_proto.c
index b7d01f27d463..6a36623e897c 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -265,6 +265,8 @@ void nf_ct_l3proto_unregister(struct nf_conntrack_l3proto
*proto)
mutex_unlock(&nf_ct_proto_mutex);
synchronize_rcu();
+ /* Remove all contrack entries for this protocol */
+ nf_ct_iterate_destroy(kill_l3proto, proto);
}
EXPORT_SYMBOL_GPL(nf_ct_l3proto_unregister);
@@ -280,9 +282,6 @@ void nf_ct_l3proto_pernet_unregister(struct net *net,
*/
if (proto->net_ns_put)
proto->net_ns_put(net);
-
- /* Remove all contrack entries for this protocol */
- nf_ct_iterate_cleanup_net(net, kill_l3proto, proto, 0, 0);
}
EXPORT_SYMBOL_GPL(nf_ct_l3proto_pernet_unregister);
@@ -421,17 +420,23 @@ int nf_ct_l4proto_pernet_register_one(struct net *net,
}
EXPORT_SYMBOL_GPL(nf_ct_l4proto_pernet_register_one);
-void nf_ct_l4proto_unregister_one(struct nf_conntrack_l4proto *l4proto)
+static void __nf_ct_l4proto_unregister_one(struct nf_conntrack_l4proto
*l4proto)
+
{
BUG_ON(l4proto->l3proto >= PF_MAX);
- mutex_lock(&nf_ct_proto_mutex);
BUG_ON(rcu_dereference_protected(
nf_ct_protos[l4proto->l3proto][l4proto->l4proto],
lockdep_is_held(&nf_ct_proto_mutex)
) != l4proto);
rcu_assign_pointer(nf_ct_protos[l4proto->l3proto][l4proto->l4proto],
&nf_conntrack_l4proto_generic);
+}
+
+void nf_ct_l4proto_unregister_one(struct nf_conntrack_l4proto *l4proto)
+{
+ mutex_lock(&nf_ct_proto_mutex);
+ __nf_ct_l4proto_unregister_one(l4proto);
mutex_unlock(&nf_ct_proto_mutex);
synchronize_rcu();
@@ -448,9 +453,6 @@ void nf_ct_l4proto_pernet_unregister_one(struct net *net,
pn->users--;
nf_ct_l4proto_unregister_sysctl(net, pn, l4proto);
-
- /* Remove all contrack entries for this protocol */
- nf_ct_iterate_cleanup_net(net, kill_l4proto, l4proto, 0, 0);
}
EXPORT_SYMBOL_GPL(nf_ct_l4proto_pernet_unregister_one);
@@ -500,8 +502,14 @@ EXPORT_SYMBOL_GPL(nf_ct_l4proto_pernet_register);
void nf_ct_l4proto_unregister(struct nf_conntrack_l4proto *l4proto[],
unsigned int num_proto)
{
+ mutex_lock(&nf_ct_proto_mutex);
while (num_proto-- != 0)
- nf_ct_l4proto_unregister_one(l4proto[num_proto]);
+ __nf_ct_l4proto_unregister_one(l4proto[num_proto]);
+ mutex_unlock(&nf_ct_proto_mutex);
+
+ synchronize_net();
+ /* Remove all contrack entries for this protocol */
+ nf_ct_iterate_destroy(kill_l4proto, l4proto);
}
EXPORT_SYMBOL_GPL(nf_ct_l4proto_unregister);
--
2.7.4
--
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