[PATCH 06/33] netns ct: per-netns unconfirmed list

Alexey Dobriyan
2008-09-08T03:02:43Z

What is confirmed connection in one netns can very well be unconfirmed
in another one.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index 1c37356..b4b45c5 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -72,6 +72,5 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l4proto *proto);

extern spinlock_t nf_conntrack_lock ;
-extern struct hlist_head unconfirmed;

#endif /* _NF_CONNTRACK_CORE_H */
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index e453a33..6ddf58e 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -1,6 +1,7 @@
#ifndef __NETNS_CONNTRACK_H
#define __NETNS_CONNTRACK_H

+#include <linux/list.h>
#include <asm/atomic.h>

struct netns_ct {
@@ -8,6 +9,7 @@ struct netns_ct {
unsigned int expect_count;
struct hlist_head *hash;
struct hlist_head *expect_hash;
+ struct hlist_head unconfirmed;
int hash_vmalloc;
int expect_vmalloc;
};
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index c188ede..2a105db 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -54,7 +54,6 @@ struct nf_conn nf_conntrack_untracked __read_mostly;
EXPORT_SYMBOL_GPL(nf_conntrack_untracked);

unsigned int nf_ct_log_invalid __read_mostly;
-HLIST_HEAD(unconfirmed);
static struct kmem_cache *nf_conntrack_cachep __read_mostly;

DEFINE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat);
@@ -596,7 +595,8 @@ init_conntrack(struct net *net,
}

/* Overload tuple linked list to put us in unconfirmed list. */
- hlist_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode, &unconfirmed);
+ hlist_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode,
+ &net->ct.unconfirmed);

spin_unlock_bh(&nf_conntrack_lock);

@@ -957,7 +957,7 @@ get_next_corpse(struct net *net, int (*iter)(struct nf_conn *i, void *data),
goto found;
}
}
- hlist_for_each_entry(h, n, &unconfirmed, hnode) {
+ hlist_for_each_entry(h, n, &net->ct.unconfirmed, hnode) {
ct = nf_ct_tuplehash_to_ctrack(h);
if (iter(ct, data))
set_bit(IPS_DYING_BIT, &ct->status);
@@ -1154,6 +1154,7 @@ int nf_conntrack_init(struct net *net)
printk(KERN_ERR "Unable to create nf_conntrack_hash\n");
goto err_out;
}
+ INIT_HLIST_HEAD(&net->ct.unconfirmed);

nf_conntrack_max = max_factor * nf_conntrack_htable_size;

diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index c793db8..920e778 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -156,7 +156,7 @@ void nf_conntrack_helper_unregister(struct nf_conntrack_helper *me)
}

/* Get rid of expecteds, set helpers to NULL. */
- hlist_for_each_entry(h, n, &unconfirmed, hnode)
+ hlist_for_each_entry(h, n, &init_net.ct.unconfirmed, hnode)
unhelp(h, me);
for (i = 0; i < nf_conntrack_htable_size; i++) {
hlist_for_each_entry(h, n, &init_net.ct.hash[i], hnode)