[PATCH 09/33] netns ct: per-netns /proc/net/nf_conntrack, /proc/net/stat/nf_conntrack

Alexey Dobriyan
2008-09-08T03:01:56Z

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

diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 5456e4b..02eaf87 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -40,18 +40,20 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
EXPORT_SYMBOL_GPL(print_tuple);

struct ct_iter_state {
+ struct seq_net_private p;
unsigned int bucket;
};

static struct hlist_node *ct_get_first(struct seq_file *seq)
{
+ struct net *net = seq_file_net(seq);
struct ct_iter_state *st = seq->private;
struct hlist_node *n;

for (st->bucket = 0;
st->bucket < nf_conntrack_htable_size;
st->bucket++) {
- n = rcu_dereference(init_net.ct.hash[st->bucket].first);
+ n = rcu_dereference(net->ct.hash[st->bucket].first);
if (n)
return n;
}
@@ -61,13 +63,14 @@ static struct hlist_node *ct_get_first(struct seq_file *seq)
static struct hlist_node *ct_get_next(struct seq_file *seq,
struct hlist_node *head)
{
+ struct net *net = seq_file_net(seq);
struct ct_iter_state *st = seq->private;

head = rcu_dereference(head->next);
while (head == NULL) {
if (++st->bucket >= nf_conntrack_htable_size)
return NULL;
- head = rcu_dereference(init_net.ct.hash[st->bucket].first);
+ head = rcu_dereference(net->ct.hash[st->bucket].first);
}
return head;
}
@@ -177,7 +180,7 @@ static const struct seq_operations ct_seq_ops = {

static int ct_open(struct inode *inode, struct file *file)
{
- return seq_open_private(file, &ct_seq_ops,
+ return seq_open_net(inode, file, &ct_seq_ops,
sizeof(struct ct_iter_state));
}

@@ -186,7 +189,7 @@ static const struct file_operations ct_file_ops = {
.open = ct_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};

static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
@@ -277,38 +280,38 @@ static const struct file_operations ct_cpu_seq_fops = {
.release = seq_release,
};

-static int nf_conntrack_standalone_init_proc(void)
+static int nf_conntrack_standalone_init_proc(struct net *net)
{
struct proc_dir_entry *pde;

- pde = proc_net_fops_create(&init_net, "nf_conntrack", 0440, &ct_file_ops);
+ pde = proc_net_fops_create(net, "nf_conntrack", 0440, &ct_file_ops);
if (!pde)
goto out_nf_conntrack;

- pde = proc_create("nf_conntrack", S_IRUGO, init_net.proc_net_stat,
+ pde = proc_create("nf_conntrack", S_IRUGO, net->proc_net_stat,
&ct_cpu_seq_fops);
if (!pde)
goto out_stat_nf_conntrack;
return 0;

out_stat_nf_conntrack:
- proc_net_remove(&init_net, "nf_conntrack");
+ proc_net_remove(net, "nf_conntrack");
out_nf_conntrack:
return -ENOMEM;
}

-static void nf_conntrack_standalone_fini_proc(void)
+static void nf_conntrack_standalone_fini_proc(struct net *net)
{
- remove_proc_entry("nf_conntrack", init_net.proc_net_stat);
- proc_net_remove(&init_net, "nf_conntrack");
+ remove_proc_entry("nf_conntrack", net->proc_net_stat);
+ proc_net_remove(net, "nf_conntrack");
}
#else
-static int nf_conntrack_standalone_init_proc(void)
+static int nf_conntrack_standalone_init_proc(struct net *net)
{
return 0;
}

-static void nf_conntrack_standalone_fini_proc(void)
+static void nf_conntrack_standalone_fini_proc(struct net *net)
{
}
#endif /* CONFIG_PROC_FS */
@@ -442,11 +445,25 @@ static void nf_conntrack_standalone_fini_sysctl(void)

static int nf_conntrack_net_init(struct net *net)
{
- return nf_conntrack_init(net);
+ int ret;
+
+ ret = nf_conntrack_init(net);
+ if (ret < 0)
+ goto out_init;
+ ret = nf_conntrack_standalone_init_proc(net);
+ if (ret < 0)
+ goto out_proc;
+ return 0;
+
+out_proc:
+ nf_conntrack_cleanup(net);
+out_init:
+ return ret;
}

static void nf_conntrack_net_exit(struct net *net)
{
+ nf_conntrack_standalone_fini_proc(net);
nf_conntrack_cleanup(net);
}

@@ -462,17 +479,12 @@ static int __init nf_conntrack_standalone_init(void)
ret = register_pernet_subsys(&nf_conntrack_net_ops);
if (ret < 0)
goto out;
- ret = nf_conntrack_standalone_init_proc();
- if (ret < 0)
- goto out_proc;
ret = nf_conntrack_standalone_init_sysctl();
if (ret < 0)
goto out_sysctl;
return 0;

out_sysctl:
- nf_conntrack_standalone_fini_proc();
-out_proc:
unregister_pernet_subsys(&nf_conntrack_net_ops);
out:
return ret;
@@ -481,7 +493,6 @@ out:
static void __exit nf_conntrack_standalone_fini(void)
{
nf_conntrack_standalone_fini_sysctl();
- nf_conntrack_standalone_fini_proc();
unregister_pernet_subsys(&nf_conntrack_net_ops);
}