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netfilter: netns nf_conntrack: per-netns /proc/net/ip_conntrack, /proc/net/stat/ip_conntrack, /proc/net/ip_conntrack_expect

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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-10-08 11:35:06 +02:00 committed by Patrick McHardy
parent dc5129f8df
commit 5e6b29972b
1 changed files with 38 additions and 19 deletions
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53
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
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@ -21,18 +21,20 @@
#include <net/netfilter/nf_conntrack_acct.h>
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;
}
@ -42,13 +44,14 @@ 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;
}
@ -158,7 +161,7 @@ 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));
}
@ -167,17 +170,18 @@ 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,
};
/* expects */
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 = &init_net;
struct net *net = seq_file_net(seq);
struct ct_expect_iter_state *st = seq->private;
struct hlist_node *n;
@ -192,7 +196,7 @@ 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 = &init_net;
struct net *net = seq_file_net(seq);
struct ct_expect_iter_state *st = seq->private;
head = rcu_dereference(head->next);
@ -267,7 +271,7 @@ 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));
}
@ -276,7 +280,7 @@ static const struct file_operations ip_exp_file_ops = {
.open = exp_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)
@ -367,36 +371,51 @@ static const struct file_operations ct_cpu_seq_fops = {
.release = seq_release,
};
int __init nf_conntrack_ipv4_compat_init(void)
static int __net_init ip_conntrack_net_init(struct net *net)
{
struct proc_dir_entry *proc, *proc_exp, *proc_stat;
proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops);
proc = proc_net_fops_create(net, "ip_conntrack", 0440, &ct_file_ops);
if (!proc)
goto err1;
proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440,
proc_exp = proc_net_fops_create(net, "ip_conntrack_expect", 0440,
&ip_exp_file_ops);
if (!proc_exp)
goto err2;
proc_stat = proc_create("ip_conntrack", S_IRUGO,
init_net.proc_net_stat, &ct_cpu_seq_fops);
net->proc_net_stat, &ct_cpu_seq_fops);
if (!proc_stat)
goto err3;
return 0;
err3:
proc_net_remove(&init_net, "ip_conntrack_expect");
proc_net_remove(net, "ip_conntrack_expect");
err2:
proc_net_remove(&init_net, "ip_conntrack");
proc_net_remove(net, "ip_conntrack");
err1:
return -ENOMEM;
}
static void __net_exit ip_conntrack_net_exit(struct net *net)
{
remove_proc_entry("ip_conntrack", net->proc_net_stat);
proc_net_remove(net, "ip_conntrack_expect");
proc_net_remove(net, "ip_conntrack");
}
static struct pernet_operations ip_conntrack_net_ops = {
.init = ip_conntrack_net_init,
.exit = ip_conntrack_net_exit,
};
int __init nf_conntrack_ipv4_compat_init(void)
{
return register_pernet_subsys(&ip_conntrack_net_ops);
}
void __exit nf_conntrack_ipv4_compat_fini(void)
{
remove_proc_entry("ip_conntrack", init_net.proc_net_stat);
proc_net_remove(&init_net, "ip_conntrack_expect");
proc_net_remove(&init_net, "ip_conntrack");
unregister_pernet_subsys(&ip_conntrack_net_ops);
}