netfilter: netns nf_conntrack: final netns tweaks
Add init_net checks to not remove kmem_caches twice and so on.
Refactor functions to split code which should be executed only for
init_net into one place.
ip_ct_attach and ip_ct_destroy assignments remain separate, because
they're separate stages in setup and teardown.
NOTE: NOTRACK code is in for-every-net part. It will be made per-netns
after we decidce how to do it correctly.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index b7f7511..37a703b 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -563,12 +563,14 @@
{
int err = -ENOMEM;
- if (!nf_ct_expect_hsize) {
- nf_ct_expect_hsize = nf_conntrack_htable_size / 256;
- if (!nf_ct_expect_hsize)
- nf_ct_expect_hsize = 1;
+ if (net_eq(net, &init_net)) {
+ if (!nf_ct_expect_hsize) {
+ nf_ct_expect_hsize = nf_conntrack_htable_size / 256;
+ if (!nf_ct_expect_hsize)
+ nf_ct_expect_hsize = 1;
+ }
+ nf_ct_expect_max = nf_ct_expect_hsize * 4;
}
- nf_ct_expect_max = nf_ct_expect_hsize * 4;
net->ct.expect_count = 0;
net->ct.expect_hash = nf_ct_alloc_hashtable(&nf_ct_expect_hsize,
@@ -576,11 +578,13 @@
if (net->ct.expect_hash == NULL)
goto err1;
- nf_ct_expect_cachep = kmem_cache_create("nf_conntrack_expect",
+ if (net_eq(net, &init_net)) {
+ nf_ct_expect_cachep = kmem_cache_create("nf_conntrack_expect",
sizeof(struct nf_conntrack_expect),
0, 0, NULL);
- if (!nf_ct_expect_cachep)
- goto err2;
+ if (!nf_ct_expect_cachep)
+ goto err2;
+ }
err = exp_proc_init(net);
if (err < 0)
@@ -589,7 +593,8 @@
return 0;
err3:
- kmem_cache_destroy(nf_ct_expect_cachep);
+ if (net_eq(net, &init_net))
+ kmem_cache_destroy(nf_ct_expect_cachep);
err2:
nf_ct_free_hashtable(net->ct.expect_hash, net->ct.expect_vmalloc,
nf_ct_expect_hsize);
@@ -600,7 +605,8 @@
void nf_conntrack_expect_fini(struct net *net)
{
exp_proc_remove(net);
- kmem_cache_destroy(nf_ct_expect_cachep);
+ if (net_eq(net, &init_net))
+ kmem_cache_destroy(nf_ct_expect_cachep);
nf_ct_free_hashtable(net->ct.expect_hash, net->ct.expect_vmalloc,
nf_ct_expect_hsize);
}