netdev - [PATCH 14/25] netns ct: per-netns /proc/net/nf_conntrack

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Message-ID: <20080622011312.GO5392@martell.zuzino.mipt.ru>
Date:	Sun, 22 Jun 2008 05:13:12 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	kaber@...sh.net
Cc:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	den@...nvz.org, xemul@...nvz.org, ebiederm@...ssion.com,
	benjamin.thery@...l.net, dlezcano@...ibm.com
Subject: [PATCH 14/25] netns ct: per-netns /proc/net/nf_conntrack_expect

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

 net/netfilter/nf_conntrack_expect.c |   32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)

--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -423,16 +423,18 @@ EXPORT_SYMBOL_GPL(nf_ct_expect_related);
 
 #ifdef CONFIG_PROC_FS
 struct ct_expect_iter_state {
+	struct seq_net_private p;
 	unsigned int bucket;
 };
 
 static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
 {
+	struct net *net = seq_file_net(seq);
 	struct ct_expect_iter_state *st = seq->private;
 	struct hlist_node *n;
 
 	for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
-		n = rcu_dereference(init_net.ct.expect_hash[st->bucket].first);
+		n = rcu_dereference(net->ct.expect_hash[st->bucket].first);
 		if (n)
 			return n;
 	}
@@ -442,13 +444,14 @@ static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
 static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
 					     struct hlist_node *head)
 {
+	struct net *net = seq_file_net(seq);
 	struct ct_expect_iter_state *st = seq->private;
 
 	head = rcu_dereference(head->next);
 	while (head == NULL) {
 		if (++st->bucket >= nf_ct_expect_hsize)
 			return NULL;
-		head = rcu_dereference(init_net.ct.expect_hash[st->bucket].first);
+		head = rcu_dereference(net->ct.expect_hash[st->bucket].first);
 	}
 	return head;
 }
@@ -522,7 +525,7 @@ static const struct seq_operations exp_seq_ops = {
 
 static int exp_open(struct inode *inode, struct file *file)
 {
-	return seq_open_private(file, &exp_seq_ops,
+	return seq_open_net(inode, file, &exp_seq_ops,
 			sizeof(struct ct_expect_iter_state));
 }
 
@@ -531,26 +534,26 @@ static const struct file_operations exp_file_ops = {
 	.open    = exp_open,
 	.read    = seq_read,
 	.llseek  = seq_lseek,
-	.release = seq_release_private,
+	.release = seq_release_net,
 };
 #endif /* CONFIG_PROC_FS */
 
-static int exp_proc_init(void)
+static int exp_proc_init(struct net *net)
 {
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *proc;
 
-	proc = proc_net_fops_create(&init_net, "nf_conntrack_expect", 0440, &exp_file_ops);
+	proc = proc_net_fops_create(net, "nf_conntrack_expect", 0440, &exp_file_ops);
 	if (!proc)
 		return -ENOMEM;
 #endif /* CONFIG_PROC_FS */
 	return 0;
 }
 
-static void exp_proc_remove(void)
+static void exp_proc_remove(struct net *net)
 {
 #ifdef CONFIG_PROC_FS
-	proc_net_remove(&init_net, "nf_conntrack_expect");
+	proc_net_remove(net, "nf_conntrack_expect");
 #endif /* CONFIG_PROC_FS */
 }
 
@@ -581,12 +584,12 @@ int nf_conntrack_expect_init(struct net *net)
 					0, 0, NULL);
 		if (!nf_ct_expect_cachep)
 			goto err2;
-
-		err = exp_proc_init();
-		if (err < 0)
-			goto err3;
 	}
 
+	err = exp_proc_init(net);
+	if (err < 0)
+		goto err3;
+
 	return 0;
 
 err3:
@@ -601,10 +604,9 @@ err1:
 
 void nf_conntrack_expect_fini(struct net *net)
 {
-	if (net == &init_net) {
-		exp_proc_remove();
+	exp_proc_remove(net);
+	if (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);
 }
-- 
1.5.4.5


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